Patent Publication Number: US-7222569-B2

Title: Oscillation amount adjusting device for oscillating roller

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
   This application is a Divisional of application Ser. No. 10/895,924, filed on Jul. 22, 2004 now U.S. Pat. No. 7,104,197, the entire contents of which are hereby incorporated by reference and for which priority is claimed under 35 U.S.C. § 120. 
   This Nonprovisional application claims priority under 35 U.S.C. § 119(a) on Japanese Patent Application No. 2003-200299 filed on Jul. 23, 2003, the entire contents of which are hereby incorporated by reference. 

   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to an oscillation amount adjusting device for an oscillating roller in an inking device of a printing press. More specifically, the invention relates to an oscillation amount adjusting device which can make adjustment by remote and automatic control using a motor while achieving space saving without exerting adverse influence on printing. 
   2. Description of the Related Art 
   In an inking device of a printing press, ink in an ink reservoir is sequentially fed to many distribution rollers via ink ductor rollers. In the distribution rollers, the ink is uniformly distributed, and transferred to a printing plate supported on the circumferential surface of a plate cylinder. The above-mentioned many distribution rollers consist of combinations of metal rollers and rubber rollers. Among them, the metal roller is called an oscillating roller, which is designed to swing laterally (in a roller axis direction) under the action of a swing device (oscillation mechanism) while rotating, thereby distributing the ink uniformly. 
   When rainbow printing is to be performed, or when the machine speed has been changed, it becomes important to adjust the oscillation amount of the oscillating roller. A conventional oscillation amount adjusting device for adjusting the amount of oscillation by remote and automatic control is disclosed, for example, in Japanese Patent Application Laid-Open No. 2001-199051 (hereinafter referred to as Patent Document 1). However, this oscillation amount adjusting device has a large-scale drive system composed of a rotating drum, a shaft, a lever, and a link plate, thus requiring a large space, posing the problem that its installation may be difficult in view of roller arrangement and its relation with other devices. 
   Furthermore, the oscillation amount adjusting device of Patent Document 1 swings a plurality of oscillating rollers in the roller axis direction by interconnecting these rollers by levers. Thus, the plurality of oscillating rollers simultaneously stop at the position of the swing end, presenting the problem that the thickness of an ink film tends to be uneven. Also, the plurality of oscillating rollers simultaneously stop and begin to move in the reverse direction, causing the problem that shock due to load increases to affect printing adversely. 
   To solve these problems, it is conceivable to adopt an oscillation mechanism designed to produce differences in the phase of each oscillating roller in its swing motion by the grinding motion of a disk, as disclosed in Japanese Patent Publication No. 1979-3763 (hereinafter referred to as Patent Document 2). 
   In adjusting the oscillation amount of the oscillating roller in the oscillation mechanism disclosed in the above-mentioned Patent Document 2, a method as disclosed in Japanese Patent Publication No. 1981-6864 (hereinafter referred to as Patent Document 3) is adopted. As shown in  FIG. 16 , a cylindrical sleeve  102  having an outer peripheral surface inclined with respect to the axis of an inclined shaft portion  101  of a rotating shaft  100  is rotatably fitted on the inclined shaft portion  101 , and shaft ends of a plurality of oscillating rollers  104   a ,  104   b . . . are rotatably supported on a disk  103  rotatably supported by the sleeve  102 . 
   Thus, when the rotating shaft  100  is rotated in a manner interlocked with a drive motor or the like of a printing press, the inclined shaft portion  101  of the rotating shaft  100 , which has an inclined axis, makes an oscillatory motion. The disk  103 , which is journaled about the inclined shaft portion  101  via the sleeve  102 , makes a so-called grinding motion. During this process, the oscillating rollers  104   a ,  104   b . . . swing in the axial direction, with their phases being sequentially shifted in accordance with the order of arrangement of the oscillating rollers  104   a ,  104   b . . . .    
   In adjusting the amount of oscillation of the oscillating rollers  104   a ,  104   b . . . , driving of the printing press is once shut down. Then, an operator loosens an adjusting bolt  105  manually, inserts a tool into a hole  102   a  of the sleeve  102  to rotate the sleeve  102  by a predetermined angle, and then tightens the adjusting bolt  105  to lock the sleeve  102  to the rotating shaft  100  again. 
   In the oscillation amount adjusting device disclosed in the aforementioned Patent Document 3, the operator has to rotate the sleeve  102  manually while moving all of the oscillating rollers  104   a ,  104   b . . . remaining stopped. Thus, a burden is imposed on the operator. Moreover, the accuracy of adjustment depends on the technical ability of the individual operator. Hence, if, after adjustment, the printing press is driven and the adjustment is found to be unsuccessful, the printing press must be shut down and adjusted again, thus posing the problem of taking time. 
   SUMMARY OF THE INVENTION 
   The present invention has been accomplished in light of the above-described problems with the earlier technologies. Its object is to provide an oscillation amount adjusting device for an oscillating roller, which can make adjustment in a semiautomatic manner using a motor or the like while achieving space saving without exerting adverse influence on printing. 
   To attain the above object, there is provided, according to an aspect of the present invention, an oscillation amount adjusting device for an oscillating roller in an oscillating roller swing device, 
   the oscillating roller swing device including 
   an oscillating roller swung in an axial direction, 
   a rotating shaft rotatably supported by a frame and having an inclined shaft portion inclined to an axis of the oscillating roller, 
   a cylindrical sleeve rotatably fitted on the inclined shaft portion of the rotating shaft and having an outer peripheral surface inclined to an axis of the inclined shaft portion, 
   sleeve locking-release means for rendering the sleeve nonrotatable or rotatable relative to the rotating shaft, 
   an oscillating roller engagement member rotatably supported on the sleeve and having a first engagement portion engaging the oscillating roller, and 
   drive means for rotating the rotating shaft, 
   the oscillation amount adjusting device, comprising: 
   a second engagement portion provided in the sleeve; and 
   restraining means for engaging the second engagement portion to restrain rotation of the sleeve, 
   wherein the sleeve locking-release means is brought into a release state and the restraining means is brought into engagement with the second engagement portion and, with the release state and the engagement being maintained, the drive means is driven. 
   Thus, high accuracy adjustment can be made semiautomatically using a motor or the like, so that marked reduction of the working time is achieved. Since the oscillation phases of the respective oscillating rollers are rendered different, moreover, printing is not adversely affected, and simplification of the apparatus results in space saving. 
   The drive means may be a dedicated motor directly coupled to a shaft end of the rotating shaft. 
   The drive means may be a drive motor for driving an entire machine, and the drive motor may be connected to the rotating shaft via a gear mechanism. 
   The oscillation amount adjusting device may further comprise restraining means moving means for moving the restraining means between an engagement position where the restraining means is brought into engagement with the second engagement portion and a retreat position where the restraining means is out of engagement with the second engagement portion. 
   The oscillation amount adjusting device may further comprise a sleeve rotation position detector for detecting a rotation position of the sleeve, and the second engagement portion may be a groove provided in the sleeve. 
   The oscillation amount adjusting device may further comprise: an oscillation amount setting device for setting a swing amount of the oscillating roller; a drive amount detector for detecting a drive amount of the drive means; and a control device for controlling the drive means in response to a signal from a sleeve rotation position detector for detecting a rotation position of the sleeve, a signal from the oscillation amount setting device, and a signal from the drive amount detector. 
   According to another aspect of the present invention, there is provided an oscillation amount adjusting device for an oscillating roller in an oscillating roller swing device, 
   the oscillating roller swing device including 
   an oscillating roller swung in an axial direction, 
   a rotating shaft rotatably supported by a frame and having an inclined shaft portion inclined to an axis of the oscillating roller, 
   a cylindrical sleeve rotatably fitted on the inclined shaft portion of the rotating shaft and having an outer peripheral surface inclined to an axis of the inclined shaft portion, 
   sleeve locking-release means for rendering the sleeve nonrotatable or rotatable relative to the rotating shaft, 
   an oscillating roller engagement member rotatably supported on the sleeve and having a first engagement portion engaging the oscillating roller, and 
   drive means for rotating the sleeve, 
   the oscillation amount adjusting device, comprising: 
   a second engagement portion provided in the rotating shaft; and 
   restraining means for engaging the second engagement portion to restrain rotation of the rotating shaft, 
   wherein the sleeve locking-release means is brought into a release state and the restraining means is brought into engagement with the second engagement portion and, with the release state and the engagement being maintained, the drive means is driven. 
   The drive means may be a dedicated motor, and the dedicated motor may be connected to a rotating member via a gear mechanism, the rotating member being detachably fitted on the rotating shaft, being rotatably supported by a support portion, and being nonrotatably engaged with the sleeve. 
   The drive means may be a dedicated motor, and the dedicated motor may directly rotate the sleeve via a friction wheel, the sleeve nonrotatably engaging a rotating member, the rotating member being detachably fitted on the rotating shaft and being rotatably supported by a support portion. 
   The oscillation amount adjusting device may further comprise restraining means moving means for moving the restraining means between an engagement position where the restraining means is brought into engagement with the second engagement portion and a retreat position where the restraining means is out of engagement with the second engagement portion. 
   The oscillation amount adjusting device may further comprise: a rotating shaft rotation position detector for detecting a rotation position of the rotating shaft; an oscillation amount setting device for setting a swing amount of the oscillating roller; a drive amount detector for detecting a drive amount of the drive means; and a control device for controlling the drive means in response to a signal from the rotating shaft rotation position detector, a signal from the oscillation amount setting device, and a signal from the drive amount detector. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein: 
       FIG. 1  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a first embodiment of the present invention; 
       FIG. 2  is a side view of essential parts; 
       FIG. 3  is a control block diagram; 
       FIG. 4  is a flow chart for oscillation amount control; 
       FIG. 5  is a flow chart for the oscillation amount control; 
       FIG. 6  is a flow chart for the oscillation amount control; 
       FIG. 7  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a second embodiment of the present invention; 
       FIG. 8  is a control block diagram; 
       FIG. 9  is a flow chart for oscillation amount control; 
       FIG. 10  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a third embodiment of the present invention; 
       FIG. 11  is a control block diagram; 
       FIG. 12  is a flow chart for oscillation amount control; 
       FIG. 13  is a flow chart for the oscillation amount control; 
       FIG. 14  is a flow chart for the oscillation amount control; 
       FIG. 15  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a fourth embodiment of the present invention; and 
       FIG. 16  is a front sectional view of an oscillating roller swing device of an inking device, showing a conventional example. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   An oscillation amount adjusting device for an oscillating roller according to the present invention will now be described in detail by embodiments with reference to the accompanying drawings, which in no way limit the invention. 
   First Embodiment 
     FIG. 1  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a first embodiment of the present invention.  FIG. 2  is a side view of essential parts thereof.  FIG. 3  is a control block diagram.  FIG. 4  is a flow chart for oscillation amount control.  FIG. 5  is a flow chart for the oscillation amount control.  FIG. 6  is a flow chart for the oscillation amount control. 
   As shown in  FIGS. 1 and 2 , four oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  are journaled by a frame  1  of an inking device. A rotating shaft  6 , which is journaled by a bearing  3  provided in the frame  1  and a bearing  5  of a support plate  4  screwed to the frame  1 , is provided in a middle portion nearly equally spaced from these oscillating rollers  2   a ,  2   b ,  2   c , and  2   d.    
   The rotating shaft  6  is composed of an inclined shaft portion  7  and a parallel shaft portion  8  located adjacently, the inclined shaft portion  7  being inclined with respect to the axes of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , and the parallel shaft portion  8  having an axis parallel to the axes of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d . The parallel shaft portion  8  is journaled by the support plate  4 , and is also directly coupled to an oscillation drive motor (drive means, a dedicated motor)  10  incorporating a rotary encoder  9  (drive amount detector; see  FIG. 3 ) which comprises a servo motor or the like. The oscillation drive motor  10  is laterally attached to the support plate  4 . 
   A cylindrical sleeve  12 , which has an outer peripheral surface inclined with respect to the axis of the inclined shaft portion  7  of the rotating shaft  6 , is fitted on the inclined shaft portion  7  to be rotatable and unmovable in the axial direction. A disk (oscillating roller engagement member)  14  is supported on the outer peripheral surface of the sleeve  12  via a bearing  13  to be rotatable and unmovable in the axial direction. A spherical body  16  provided at the shaft end of each of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  is fitted in a spherical bearing (first engagement portion)  15  provided in an outer peripheral portion of the disk  14 . 
   An engagement groove (second engagement portion)  17  is formed in a part of the outer periphery of the sleeve  12 . A sleeve detent plate  18  (restraining means), which engages the engagement groove  17 , is pivotally supported by the support plate  4 . The sleeve  12  is adapted to split-clamp the inclined shaft portion  7 , and the sleeve  12  becomes rotatable relative to the inclined shaft portion  7  when a sleeve locking bolt (sleeve locking-release means)  22  is loosened. 
   An air cylinder (restraining means moving means)  19 , which moves the sleeve detent plate  18  between an engagement position (see double-dotted chain lines in  FIG. 1 ), where the sleeve detent plate  18  engages the engagement groove  17 , and a retreat position (see solid lines in  FIG. 1 ), where the sleeve detent plate  18  is out of engagement with the engagement groove  17 , is assembled to the support plate  4 . The air cylinder  19  incorporates a piston outgoing (the above-mentioned engagement position) detection sensor  20   a  and a piston incoming (the above-mentioned retreat position) detection sensor  20   b  (see  FIG. 3 ). A sensor (sleeve rotation position detector)  21  for detecting the stop position of the sleeve  12  on the outer peripheral surface of the sleeve  12  is annexed to the support plate  4 . 
   As shown in  FIG. 3 , the oscillation drive motor  10  and the air cylinder  19  are driven and controlled by a control device  30 A, as is a drive motor  28  for driving the entire printing press, the drive motor  28  incorporating a rotary encoder  27 . 
   The control device  30 A comprises CPU, ROM, and RAM, and also includes an oscillation amount memory, an oscillation phase memory, an oscillation phase tolerance value memory, a drive motor rotational speed memory, an oscillation drive motor rotational speed memory, a rotation deviation memory, an oscillation phase difference memory, a drive motor current rotational speed memory, a previous oscillation amount memory, an oscillation drive motor target rotation amount memory, and an oscillation drive motor current rotation amount memory, these memories and input/output devices  31   a  to  31   k ,  31   m , and  31   n  being connected together by a bus-line BUS. 
   An input device  32 , such as a start switch or a key board, a display device  33  such as a CRT or a display, and an output device  34 , such as a printer or a floppy (registered trade mark) disk drive, are connected to the input/output device  31   a . An oscillation amount setting device  35  for setting the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , an oscillation phase setting device  36  for setting the oscillation phases of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , an oscillation phase tolerance value setting device  46  for setting the oscillation phase tolerance value of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , and a drive motor rotational speed setting device  37  for setting the rotational speed of the drive motor  28  are connected to the input/output device  31   b.    
   The drive motor  28  is connected to the input/output device  31   c  via a drive motor-motor driver  38 . The drive motor rotary encoder  27  is connected to the input/output device  31   d  via an F/V converter  39  and an A/D converter  40 . A rotation deviation detection counter  41  is connected to the input/output device  31   e , and the rotation deviation detection counter  41  is connected to the drive motor rotary encoder  27  and the oscillation drive motor rotary encoder (drive amount detector)  9  via a flip-flop circuit  42 . Detection signals (clock pulses) from the drive motor rotary encoder (drive amount detector)  27  are entered into the drive motor-motor driver  38  and the rotation deviation detection counter  41 . 
   The rotation deviation detection counter  41 , the flip-flop circuit  42 , an oscillation amount detection counter  48 , and the sleeve stop position detection sensor  21  are connected to the input/output device  31   f . The oscillation amount detection counter  48  is also connected to the input/output device  31   g , and the oscillation amount detection counter  48  is further connected to the oscillation drive motor rotary encoder  9  and the sleeve stop position detection sensor  21  via a flip-flop circuit  47 . The oscillation amount detection counter  48  and the flip-flop circuit  47  are connected to the oscillation drive motor rotary encoder  9 . An oscillation drive motor rotary encoder counter  49  is connected to the input/output device  31   h , and the oscillation drive motor rotary encoder counter  49  is connected to the oscillation drive motor rotary encoder  9 . 
   The oscillation drive motor rotary encoder counter  49  is also connected to the input/output device  31   i . The oscillation drive motor rotary encoder  9  is connected to the input/output device  31   j  via an F/V converter  43  and an A/D converter  44 . The oscillation drive motor  10  is connected to the input/output device  31   k  via an oscillation drive motor-motor driver  45 . The oscillation drive motor-motor driver  45  is connected to the oscillation drive motor rotary encoder  9 . A sleeve detent plate air cylinder valve  50  for controlling the sleeve detent plate air cylinder  19  is connected to the input/output device  31   m . The piston outgoing detection sensor  20   a  and the piston incoming detection sensor  20   b , which are incorporated in the sleeve detent plate air cylinder  19 , are connected to the input/output device  31   n.    
   Because of the above-described features, during a routine operation, the oscillation drive motor  10  is rotated, with the sleeve detent plate  18  being located at the retreat position (see the solid lines in  FIG. 1 ) and the sleeve  12  being split-clamped to the rotating shaft  6  by the sleeve locking bolt  22 . By this action, the sleeve  12  rotates integrally with the rotating shaft  6  (inclined shaft portion  7 ), and the oscillatory motion of the inclined shaft portion  7  results in the grinding motion of the disk  14 . As a result, the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  are each sequentially swung in the axial direction in a different phase and in a predetermined oscillation amount. 
   In adjusting the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d , a start switch for adjustment is first turned on. Thus, the rotating shaft  6  and the sleeve  12  are rotated in a slower motion by the oscillation drive motor  10 . When they arrive at a predetermined stop position (where the engagement groove  17  and the sleeve detent plate  18  align), this arrival is detected by the sensor  21 . At this time, their rotation is stopped, and the sleeve detent plate  18  engages the engagement groove  17  to bring the sleeve  12  to a halt. 
   Then, the operator loosens the sleeve locking bolt  22  to set the sleeve  12  free relative to the rotating shaft  6 , and then turns the start switch on to rotate the rotating shaft  6  by a specified amount by the action of the oscillation drive motor  10 . Then, the sleeve  12  is fastened to the rotating shaft  6  via the sleeve locking bolt  22  by operator&#39;s manipulation. Then, the start switch is turned on. As a result, the sleeve detent plate  18  is released from the engagement groove  17 , whereupon the rotating shaft  6  and the sleeve  12  are rotated in synchronism with the printing press, making printing possible. By displacing the rotation phase of the sleeve  12  relative to the rotating shaft  6  in this manner, the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  is adjusted. 
   The oscillation amount control of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  explained above will be described in more detail according to flow charts of  FIGS. 4 to 6 . 
   In Step P 1 , it is determined whether the oscillation amount is stored in the oscillation amount memory, whether the oscillation phase is stored in the oscillation phase memory, whether the oscillation phase tolerance value is stored in the oscillation phase tolerance value memory, and whether the drive motor rotational speed is stored in the drive motor rotational speed memory. If these parameters are not stored, it is determined whether the oscillation amount is entered into the oscillation amount setting device  35  in Step P 2 , whereby the oscillation amount entered into the oscillation amount setting device  35  is loaded and stored in the oscillation amount memory in Step P 3  if the oscillation amount has not been entered. Similarly, Step P 4  and Step P 5  are executed to store the oscillation phase in the oscillation phase memory. Also, Step P 6  and Step P 7  are executed to store the oscillation phase tolerance value in the oscillation phase tolerance value memory. Moreover, Step P 8  and Step P 9  are executed to store the drive motor rotational speed in the drive motor rotational speed memory. 
   If the relevant parameters are determined to have been stored in Step P 1 , it is determined whether the start switch is turned on in Step P 10  to start the oscillation amount control of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d.    
   If the switch is turned on, then in Step P 11 , the drive motor rotational speed is read from the drive motor rotational speed memory. Then, in Step P 12 , the rotational speed of the oscillation drive motor  10  is computed from the drive motor rotational speed read, and the rotational speed of the oscillation drive motor  10  obtained by computation is stored in the oscillation drive motor rotational speed memory. Then, in Step P 13 , the drive motor rotational speed read is outputted to the drive motor-motor driver  38 . In Step P 14 , the rotational speed of the oscillation drive motor  10  obtained by computation is outputted to the oscillation drive motor-motor driver  45 . 
   Then, in Step P 15 , if it is determined that a home position signal is outputted from the oscillation drive motor rotary encoder  9 , a count value is loaded from the rotation deviation detection counter  41  in Step P 16 , and then, a reset signal is outputted to the rotation deviation detection counter  41  in Step P 17 . 
   Then, in Step P 18 , a deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9  is computed from the count value loaded above, and the computed deviation is stored in the rotation deviation memory. Then, in Step P 19 , the set oscillation phase is read from the oscillation phase memory. 
   Then, in Step P 20 , the difference between the above deviation obtained by computation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase read is computed, and stored in the oscillation phase difference memory. Then, in Step P 21 , the set oscillation phase tolerance value is read from the oscillation phase tolerance value memory. 
   Then, in Step P 22 , it is determined whether the absolute value of the difference between the computed deviation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase read is smaller than the set oscillation phase tolerance value read. 
   If the absolute value is larger in Step P 22 , the program shifts to Step P 23 , in which the output frequency of the drive motor rotary encoder  27  is loaded. In Step P 24 , the current rotational speed of the drive motor  28  is computed from the output frequency of the drive motor rotary encoder  27  loaded, and is stored in the drive motor current rotational speed memory. Then, in Step  25 , the rotational speed of the oscillation drive motor  10  is computed from the difference between the computed deviation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase, and from the computed current rotational speed of the drive motor  28 , and the computed rotational speed of the oscillation drive motor  10  is stored in the rotational speed memory for the oscillation drive motor. Then, in Step P 26 , the computed rotational speed of the oscillation drive motor  10  is outputted to the oscillation drive motor-motor driver  45 , and the program returns to Step P 15 . 
   If the absolute value is smaller in Step P 22 , the program proceeds to Step P 27 , in which whether the sleeve stop position detection sensor  21  is turned on is determined. In Step P 28 , the count value is loaded from the oscillation amount detection counter  48 , whereafter a reset signal is outputted to the oscillation amount detection counter in Step P 29 . 
   Then, in Step P 30 , the previous oscillation amount is computed from the count value of the oscillation amount detection counter  48  loaded above, and is stored in the previous oscillation amount memory. When it is determined that the sleeve stop position detection sensor  21  is turned on in Step P 31 , a stop signal is outputted to the drive motor-motor driver  38  in Step P 32 . Also, in Step P 33 , a stop signal is outputted to the oscillation drive motor-motor driver  45 . 
   Then, in Step P 34 , the sleeve detent plate air cylinder valve  50  is opened in the direction of piston outgoing. Then, when it is determined that the piston outgoing detection sensor  20   a  of the sleeve detent plate air cylinder  19  is turned on in Step P 35 , the set oscillation amount is read from the oscillation amount memory in Step P 36 . 
   In Step  37 , the previous oscillation amount is read from the previous oscillation amount memory. Then, in Step P 38 , the difference between the set oscillation amount read and the previous oscillation amount read is computed, and stored in the oscillation drive motor target rotation amount memory. Then, when it is determined that the start switch is turned on in Step P 39 , it is determined in Step P 40  whether the difference between the set oscillation amount and the previous oscillation amount is 0 (zero) or not. If the difference is 0 (zero), the program proceeds to Step P 50 . If the difference is not 0 (zero), an ON signal is outputted to the oscillation drive motor rotary encoder counter  49  in Step P 41 . Then, a determination is made in Step P 42  as to whether the difference between the set oscillation amount and the previous oscillation amount is smaller than 0 (zero). 
   If the difference is smaller in Step P 42 , a normal rotation signal is outputted to the oscillation drive motor-motor driver  45  in Step P 43 . If the difference is larger in Step P 42 , a reverse rotation signal is outputted to the oscillation drive motor-motor driver  45  in Step P 44 . Then, in Step P 45 , the count value is loaded from the oscillation drive motor rotary encoder counter  49 . Then, in Step P 46 , the rotation amount of the oscillation drive motor  10  is computed from the loaded count value, and stored in the current rotation amount memory for the oscillation drive motor. 
   Then, in Step P 47 , it is determined whether the current rotation amount of the oscillation drive motor obtained by computation agrees with the target rotation amount of the oscillation drive motor. If there is no agreement, the program returns to Step P 45 . If there is agreement, a stop signal is outputted to the oscillation drive motor-motor driver  45  in Step P 48 . 
   Then, in Step P 49 , an OFF signal and a reset signal are outputted to the oscillation drive motor rotary encoder counter  49 . Then, if it is determined that the start switch is turned on in Step P 50 , whereafter the sleeve detent plate air cylinder valve  50  is opened in the direction of piston incoming in Step P 51 . Then, when the piston incoming detection sensor  20   b  of the sleeve detent plate air cylinder  19  is turned on in Step P 52 , the program proceeds to Step P 53  and terminates oscillation amount control. 
   In Step P 53 , it is determined whether the rotational speed of the drive motor  28  has been reentered into the drive motor rotational speed setting device  37 . If it has not been reentered, the program shifts to Step P 61 . If it has been reentered, the drive motor rotational speed entered into the drive motor rotational speed setting device  37  is loaded and stored in the drive motor rotational speed memory in Step P 54 . 
   Then, in Step P 55 , the drive motor rotational speed is read from the drive motor rotational speed memory, whereafter the read drive motor rotational speed is outputted to the drive motor-motor driver  38  in Step P 56 . Then, the output frequency of the drive motor rotary encoder  27  is loaded in Step P 57 . Then, in Step P 58 , the current rotational speed of the drive motor  28  is computed from the output frequency of the drive motor rotary encoder  27  loaded above, and is stored in the current rotational speed memory for the drive motor. 
   Then, in Step P 59 , the rotational speed of the oscillation drive motor  10  is computed from the current rotational speed of the drive motor obtained by computation, and stored in the rotational speed memory for the oscillation drive motor. Then, in Step P 60 , the rotational speed of the oscillation drive motor  10  obtained by computation is outputted to the oscillation drive motor-motor driver  45 , and the program proceeds to Step P 61 . 
   Then, when a home position signal is outputted from the oscillation drive motor rotary encoder  9  in Step P 61 , the count value is loaded from the rotation deviation detection counter  41  in Step P 62 . Then, a reset signal is outputted to the rotation deviation detection counter  41  in Step P 63 . 
   Then, in Step P 64 , a deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9  is computed from the count value loaded above, and the computed deviation is stored in the rotation deviation memory. Then, in Step P 65 , the set oscillation phase is read from the oscillation phase memory. 
   Then, in Step P 66 , the difference between the above deviation obtained by computation, i.e., the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 , and the set oscillation phase read above is computed, and stored in the oscillation phase difference memory. Then, in Step P 67 , the output frequency of the drive motor rotary encoder  27  is loaded. 
   Then, in Step P 68 , the current rotational speed of the drive motor  28  is computed from the output frequency of the drive motor rotary encoder  27  loaded above, and is stored in the drive motor current rotational speed memory. Then, in Step  69 , it is determined whether the current rotational speed of the drive motor  28  obtained by computation is 0 (zero). If it is 0, a stop signal is outputted to the oscillation drive motor-motor driver  45  in Step P 70  to terminate oscillation phase control. 
   If the rotational speed is not 0 in Step P 69 , the rotational speed of the oscillation drive motor  10  is computed in Step P 71  from the difference between the deviation obtained by computation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase, and from the current rotational speed of the drive motor  28  obtained by computation, and is stored in the oscillation drive motor rotational speed memory. Then, in Step P 72 , the rotational speed of the oscillation drive motor  10  obtained by computation is outputted to the oscillation drive motor-motor driver  45 , and the program returns to Step P 53  to continue oscillation phase control. 
   In the present embodiment, as described above, the sleeve detent plate  18  for restraining the rotation of the sleeve  12  is provided, and the operator manually loosens the sleeve locking bolt  22 , enabling the sleeve  12  to be rotated relative to the rotating shaft  6  which supports the sleeve  12 . Moreover, the rotation of the sleeve  12  is restrained by the sleeve detent plate  18  and, in this state, the rotating shaft  6  supporting the sleeve  12  is rotated by the oscillation drive motor  10  to adjust the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d . Thus, oscillation amount adjustment can be made semiautomatically with high accuracy using a motor or the like, whereby marked reduction of the working time is achieved. 
   During a routine operation, moreover, the disk  14  makes a grinding motion upon the oscillatory motion of the inclined shaft portion  7 . Thus, the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d  swing in the axial direction. At this time, the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d  swing sequentially in shifted phases in accordance with the order of their arrangement. As a result, their ink distribution is performed in different phases, and their swing takes place individually, so that high quality printing free from shock can be done. In addition, the oscillation mechanism is compact, thus ensuring space saving. 
   Second Embodiment 
     FIG. 7  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a second embodiment of the present invention.  FIG. 8  is a control block diagram.  FIG. 9  is a flow chart for oscillation amount control. 
   This embodiment is an embodiment in which the rotating shaft  6 , which supports the sleeve  12  in the First Embodiment rotatably at the inclined shaft portion  7 , is rotated and driven via a gear  51  by the drive motor  28  for driving the entire printing press, and a home position phase detection sensor  52 , such as an optical sensor, for detecting a phase home position reference at the parallel shaft portion  8  of the rotating shaft  6  is annexed to the support plate  4 . Other features are the same as those in the First Embodiment. 
   The drive motor  28  and the air cylinder  19  are driven and controlled by a control device  30 B, as shown in  FIG. 8 . 
   The control device  30 B comprises CPU, ROM, and RAM, and also includes an oscillation amount memory, a drive motor rotational speed memory, a previous oscillation amount memory, a drive motor target rotation amount memory, and a drive motor current rotation amount memory, these memories and input/output devices  31   a  to  31   d ,  31   o  to  31   q ,  31   g ,  31   m  and  31   n  being connected by a bus-line BUS. 
   An input device  32 , such as a start switch or a key board, a display device  33  such as a CRT or a display, and an output device  34 , such as a printer or a floppy disk drive, are connected to the input/output device  31   a . An oscillation amount setting device  35  for setting the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , and a drive motor rotational speed setting device  37  for setting the rotational speed of the drive motor  28  are connected to the input/output device  31   b.    
   The drive motor  28  is connected to the input/output device  31   c  via a drive motor-motor driver  38 . A drive motor rotary encoder  27  is connected to the input/output device  31   d  via an F/V converter  39  and an A/D converter  40 . A drive motor rotary encoder counter  53  is connected to the input/output device  31   o , and the drive motor rotary encoder counter  53  is connected to the drive motor rotary encoder  27 . The drive motor rotary encoder counter  53  is also connected to the input/output device  31   p.    
   An oscillation amount detection counter  48  is connected to the input/output device  31   g , and the oscillation amount detection counter  48  is also connected to a sleeve stop position detection sensor  21  and the home position phase detection sensor  52  via a flip-flop circuit  47 . The oscillation amount detection counter  48  is connected to the drive motor rotary encoder (drive amount detector)  27 . The oscillation amount detection counter  48  and the sleeve stop position detection sensor  21  are connected to the input/output device  31   q.    
   A sleeve detent plate air cylinder valve  50  for controlling the sleeve detent plate air cylinder  19  is connected to the input/output device  31   m . The piston outgoing detection sensor  20   a  and the piston incoming detection sensor  20   b , which are incorporated in the sleeve detent plate air cylinder  19 , are connected to the input/output device  31   n.    
   Next, the oscillation amount control of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  in the oscillating roller swing device configured above will be described in detail according to a flow chart of  FIG. 9 . 
   In Step P 1 , it is determined whether the oscillation amount is stored in the oscillation amount memory, and whether the drive motor rotational speed is stored in the drive motor rotational speed memory. If these parameters are not stored, it is determined whether the oscillation amount is entered into the oscillation amount setting device  35  in Step P 2 , whereby the oscillation amount entered into the oscillation amount setting device  35  is loaded, and stored in the oscillation amount memory in Step P 3  if the oscillation amount has not been entered. Similarly, Step P 4  and Step P 5  are executed to store the drive motor rotational speed in the drive motor rotational speed memory. 
   If the relevant parameters are stored in Step P 1 , it is determined whether the start switch is turned on in Step P 6  to start the oscillation amount control of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d.    
   Then, in Step P 7 , the drive motor rotational speed is read from the drive motor rotational speed memory. Then, in Step P 8 , the drive motor rotational speed read is outputted to the drive motor-motor driver  38 . 
   When it is determined that the sleeve stop position detection sensor  21  is turned on in Step P 9 , the count value is loaded from the oscillation amount detection counter  48  in Step P 10 , whereafter a reset signal is outputted to the oscillation amount detection counter  48  in Step P 11 . 
   Then, in Step P 12 , the previous oscillation amount is computed from the count value loaded above, and is stored in the previous oscillation amount memory. When it is determined that the sleeve stop position detection sensor  21  is turned on in Step P 13 , a stop signal is outputted to the drive motor-motor driver  38  in Step P 14 . 
   Then, in Step P 15 , the sleeve detent plate air cylinder valve  50  is opened in the direction of piston outgoing. Then, when it is determined that the piston outgoing detection sensor  20   a  of the sleeve detent plate air cylinder  19  is turned on in Step P 16 , the set oscillation amount is read from the oscillation amount memory in Step P 17 . 
   In Step  18 , the previous oscillation amount is read from the previous oscillation amount memory. Then, in Step P 19 , the difference between the set oscillation amount read and the previous oscillation amount read is computed, and stored in the drive motor target rotation amount memory. Then, when it is determined that the start switch is turned on in Step P 20 , it is determined in Step P 21  whether the difference between the set oscillation amount and the previous oscillation amount is 0 (zero) or not. If the difference is 0 (zero), the program proceeds to Step P 31 . If the difference is not 0 (zero), an ON signal is outputted to the drive motor rotary encoder counter  53  in Step P 22 . Then, a determination is made in Step P 23  as to whether the difference between the set oscillation amount and the previous oscillation amount is smaller than 0 (zero). 
   If the difference is smaller in Step P 23 , a normal rotation signal is outputted to the drive motor-motor driver  38  in Step P 24 . If the difference is larger in Step P 23 , a reverse rotation signal is outputted to the drive motor-motor driver  38  in Step P 25 . Then, in Step P 26 , the count value is loaded from the drive motor rotary encoder counter  53 . Then, in Step P 27 , the rotation amount of the drive motor  28  is computed from the loaded count value, and stored in the current rotation amount memory for the drive motor. 
   Then, in Step P 28 , it is determined whether the current rotation amount of the drive motor obtained by computation agrees with the target rotation amount of the drive motor. If there is no agreement, the program returns to Step P 26 . If there is agreement, a stop signal is outputted to the drive motor-motor driver  38  in Step P 29 . 
   Then, in Step P 30 , an OFF signal and a reset signal are outputted to the drive motor rotary encoder counter  53 . Then, when it is determined that the start switch is turned on in Step P 31 , the sleeve detent plate air cylinder valve  50  is opened in the direction of piston incoming in Step P 32 . Then, when it is determined that the piston incoming detection sensor  20   b  of the sleeve detent plate air cylinder  19  is turned on in Step P 33 , oscillation amount control is terminated. 
   According to the present embodiment, as described above, the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d  can be adjusted semiautomatically by use of the drive motor  28 , and the same actions and effects as in the First Embodiment are obtained. In addition, the present embodiment does not use a dedicated oscillation drive motor, so that simplification of the apparatus and cost reduction are achieved. 
   Third Embodiment 
     FIG. 10  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a third embodiment of the present invention.  FIG. 11  is a control block diagram.  FIG. 12  is a flow chart for oscillation amount control.  FIG. 13  is a flow chart for the oscillation amount control.  FIG. 14  is a flow chart for the oscillation amount control. 
   As shown in  FIG. 10 , four oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  are journaled by a frame  1  of an inking device. A rotating shaft  6 , which is journaled by a bearing  3  provided in the frame  1  and a bearing  5  of a support plate  4  screwed to the frame  1 , is provided in a middle portion nearly equally spaced from these oscillating rollers  2   a ,  2   b ,  2   c , and  2   d.    
   The rotating shaft  6  comprises an inclined shaft portion  7  and a parallel shaft portion  8  located adjacently, the inclined shaft portion  7  being inclined with respect to the axes of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , and the parallel shaft portion  8  having an axis parallel to the axes of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d . The parallel shaft portion  8  is journaled by the support plate (support portion)  4  via a rotating member  62 , and is rotationally driven by an oscillation drive motor (drive means, a dedicated motor)  10  incorporating a rotary encoder (drive amount detector; see  FIG. 3 )  9  which comprises a servo motor or the like. 
   That is, the rotating member  62  is screwed to the parallel shaft portion  8  by a shaft locking bolt  22   a , and is engaged with a sleeve  12  (to be described later) via a fitting groove  60  formed in the sleeve  12  and a fitting protrusion  61  annexed to the rotating member  62 . A gear  63   a  is screwed to the outer periphery of the rotating member  62 , and the gear  63   a  meshes with a gear  63   b  secured to an output shaft of the oscillation drive motor  10  mounted laterally on the support plate  4 . 
   The above-mentioned sleeve  12  of a cylindrical shape, which has an outer peripheral surface inclined with respect to the axis of the inclined shaft portion  7  of the rotating shaft  6 , is fitted on the inclined shaft portion  7  to be rotatable and unmovable in the axial direction. A disk (oscillating roller engagement member)  14  is supported on the outer peripheral surface of the sleeve  12  via a bearing  13  to be rotatable and unmovable in the axial direction. Each of the shaft ends of the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d  is rotatably supported by a shaft support portion (a first engagement portion; indicated by the katakana letter  ) provided in an outer peripheral portion of the disk  14 . The shaft support portion   adopts a bearing and a spherical plain bearing, but may adopt a cam follower and a sheave or other structure. 
   A pressure engagement portion (second engagement portion)  66   a  is provided in a part of the outer periphery of the rotating shaft  6 . A shaft detent air cylinder (restraining means, restraining means moving means)  64 , which engages the pressure engagement portion  66   a  via a piston rod tip  64   a , is mounted on the frame  1  longitudinally. The shaft detent air cylinder  64  incorporates a piston outgoing detection sensor  68   a  and a piston incoming detection sensor  68   b  (see  FIG. 11 ). A shaft stop position detection sensor (rotating shaft rotation position detector)  65  for detecting the stop position of the rotating shaft  6  on the outer peripheral surface of the rotating shaft  6  is annexed to the frame  1 . A home position phase detection sensor  52 , such as an optical sensor, for detecting the phase home position reference in the parallel shaft portion  8  of the rotating shaft  6  (strictly, the shaft portion of the rotating member  62 ) is annexed to the support plate  4 . 
   As shown in  FIG. 11 , the oscillation drive motor  10  and the shaft detent air cylinder  64  are driven and controlled by a control device  30 C, as is a drive motor  28  for driving the entire printing press, the drive motor  28  incorporating a rotary encoder  27 . 
   The control device  30 C comprises CPU, ROM, and RAM, and also includes an oscillation amount memory, an oscillation phase memory, an oscillation phase tolerance value memory, a drive motor rotational speed memory, an oscillation drive motor rotational speed memory, a rotation deviation memory, an oscillation phase difference memory, a drive motor current rotational speed memory, a previous oscillation amount memory, an oscillation drive motor target rotation amount memory, and an oscillation drive motor current rotation amount memory, these memories and input/output devices  31   a  to  31   k ,  31   m , and  31   n  being connected together by a bus-line BUS. 
   An input device  32 , such as a start switch or a key board, a display device  33  such as a CRT or a display, and an output device  34 , such as a printer or a floppy disk drive, are connected to the input/output device  31   a . An oscillation amount setting device  35  for setting the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , an oscillation phase setting device  36  for setting the oscillation phases of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , an oscillation phase tolerance value setting device  46  for setting the oscillation phase tolerance value of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d , and a drive motor rotational speed setting device  37  for setting the rotational speed of the drive motor  28  are connected to the input/output device  31   b.    
   The drive motor  28  is connected to the input/output device  31   c  via a drive motor-motor driver  38 . A drive motor rotary encoder  27  is connected to the input/output device  31   d  via an F/V converter  39  and an A/D converter  40 . A rotation deviation detection counter  41  is connected to the input/output device  31   e , and the rotation deviation detection counter  41  is connected to the drive motor rotary encoder  27  and an oscillation drive motor rotary encoder  9  via a flip-flop circuit  42 . Detection signals (clock pulses) from the drive motor rotary encoder  27  are entered into the drive motor-motor driver  38  and the rotation deviation detection counter  41 . 
   The rotation deviation detection counter  41 , the flip-flop circuit  42 , the shaft stop position detection sensor  65 , and an oscillation amount detection counter  48  are connected to the input/output device  31   f . The oscillation amount detection counter  48  is also connected to the input/output device  31   g , and the oscillation amount detection counter  48  is further connected to the home position phase detection sensor  52  and the shaft stop position detection sensor  65  via a flip-flop circuit  47 . The oscillation amount detection counter  48  is also connected to the oscillation drive motor rotary encoder  9 . An oscillation drive motor rotary encoder counter  49  is connected to the input/output device  31   h , and the oscillation drive motor rotary encoder counter  49  is connected to the oscillation drive motor rotary encoder  9 . 
   The oscillation drive motor rotary encoder counter  49  is also connected to the input/output device  31   i . The oscillation drive motor rotary encoder  9  is connected to the input/output device  31   j  via an F/V converter  43  and an A/D converter  44 . The oscillation drive motor  10  is connected to the input/output device  31   k  via an oscillation drive motor-motor driver  45 . The oscillation drive motor-motor driver  45  is connected to the oscillation drive motor rotary encoder  9 . A shaft detent air cylinder valve  69  for controlling the shaft detent air cylinder  64  is connected to the input/output device  31   m . The piston outgoing detection sensor  68   a  and the piston incoming detection sensor  68   b , which are incorporated in the shaft detent air cylinder  64 , are connected to the input/output device  31   n.    
   Because of the above-described features, during a routine operation, the oscillation drive motor  10  is rotated, with the shaft detent air cylinder  64  being contracted to release the engagement of the piston rod tip  64   a  with the pressure engagement portion  66   a  of the rotating shaft  6 , and with the rotating member  62  being screwed to the rotating shaft  6  by the shaft locking bolt  22   a . By this action, the sleeve  12  rotates integrally with the rotating shaft  6  (inclined shaft portion  7 ), and the oscillatory motion of the inclined shaft portion  7  results in the grinding motion of the disk  14 . As a result, the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  are each sequentially swung in the axial direction in a different phase and in a predetermined oscillation amount. 
   In adjusting the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d , a start switch for adjustment is first turned on. Thus, the rotating shaft  6  and the sleeve  12  are rotated in a slower motion by the oscillation drive motor  10 . When they arrive at a predetermined stop position (where the pressure engagement portion  66   a  and the piston rod tip  64   a  align), this arrival is detected by the sensor  65 . At this time, their rotation is stopped, and the shaft detent air cylinder  64  expands to bring the piston rod tip  64   a  into engagement with the pressure engagement portion  66   a , thereby bringing the rotating shaft  6  to a halt. 
   Then, the operator loosens (removes) the shaft locking bolt  22   a  to set the sleeve  12  and the rotating member  62  free relative to the rotating shaft  6 , and then turns the start switch on to rotate the sleeve  12  and the rotating member  62  by a specified amount by the action of the oscillation drive motor  10 . Then, the sleeve  12  and the rotating member  62  are fastened to the rotating shaft  6  via the shaft locking bolt  22   a  by operator&#39;s manipulation. Then, the start switch is turned on. As a result, the shaft detent air cylinder  64  is contracted to detach the piston rod tip  64   a  from the pressure engagement portion  66   a , whereupon the rotating shaft  6  and the sleeve  12  are rotated in synchronism with the printing press, making printing possible. By displacing the rotation phase of the sleeve  12  relative to the rotating shaft  6  in this manner, the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  is adjusted. 
   The oscillation amount control of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d  explained above will be described in more detail according to flow charts of  FIGS. 12 to 14 . 
   In Step P 1 , it is determined whether the oscillation amount is stored in the oscillation amount memory, whether the oscillation phase is stored in the oscillation phase memory, whether the oscillation phase tolerance value is stored in the oscillation phase tolerance value memory, and whether the drive motor rotational speed is stored in the drive motor rotational speed memory. If these parameters are not stored, it is determined whether the oscillation amount is entered into the oscillation amount setting device  35  in Step P 2 , whereby the oscillation amount entered into the oscillation amount setting device  35  is loaded and stored in the oscillation amount memory in Step P 3  if the oscillation amount has not been entered. Similarly, Step P 4  and Step P 5  are executed to store the oscillation phase in the oscillation phase memory. Also, Step P 6  and Step P 7  are executed to store the oscillation phase tolerance value in the oscillation phase tolerance value memory. Moreover, Step P 8  and Step P 9  are executed to store the drive motor rotational speed in the drive motor rotational speed memory. 
   If the relevant parameters are stored in Step P 1 , the start switch is turned on in Step P 10  to start the oscillation amount control of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d.    
   Then, in Step P 11 , the drive motor rotational speed is read from the drive motor rotational speed memory. Then, in Step P 12 , the rotational speed of the oscillation drive motor  10  is computed from the drive motor rotational speed read, and the rotational speed of the oscillation drive motor  10  obtained by computation is stored in the oscillation drive motor rotational speed memory. Then, in Step P 13 , the drive motor rotational speed read is outputted to the drive motor-motor driver  38 . In Step P 14 , the rotational speed of the oscillation drive motor  10  obtained by computation is outputted to the oscillation drive motor-motor driver  45 . 
   Then, in Step P 15 , if it is determined that a home position signal is outputted from the oscillation drive motor rotary encoder  9 , the count value is loaded from the rotation deviation detection counter  41  in Step P 16 , and then, a reset signal is outputted to the rotation deviation detection counter  41  in Step P 17 . 
   Then, in Step P 18 , a deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9  is computed from the count value loaded above, and the computed deviation is stored in the rotation deviation memory. Then, in Step P 19 , the set oscillation phase is read from the oscillation phase memory. 
   Then, in Step P 20 , the difference between the above deviation obtained by computation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase read is computed, and stored in the oscillation phase difference memory. Then, in Step P 21 , the set oscillation phase tolerance value is read from the oscillation phase tolerance value memory. 
   Then, in Step P 22 , it is determined whether the absolute value of the difference between the computed deviation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase read is smaller than the set oscillation phase tolerance value read. 
   If the absolute value is larger in Step P 22 , the program shifts to Step P 23 , in which the output frequency of the drive motor rotary encoder  27  is loaded. In Step P 24 , the current rotational speed of the drive motor  28  is computed from the output frequency of the drive motor rotary encoder  27  loaded, and is stored in the drive motor current rotational speed memory. Then, in Step  25 , the rotational speed of the oscillation drive motor  10  is computed from the difference between the computed deviation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase, and from the computed current rotational speed of the drive motor  28 , and the computed rotational speed of the oscillation drive motor  10  is stored in the rotational speed memory for the oscillation drive motor. Then, in Step P 26 , the computed rotational speed of the oscillation drive motor  10  is outputted to the oscillation drive motor-motor driver  45 , and the program returns to Step P 15 . 
   If it is determined that the absolute value is smaller in Step P 22 , the program goes to Step P 27 , in which it is determined whether the shaft stop position detection sensor  65  is turned on. In Step P 28 , the count value is loaded from the oscillation amount detection counter  48 , whereafter a reset signal is outputted to the oscillation amount detection counter in Step P 29 . 
   Then, in Step P 30 , the previous oscillation amount is computed from the count value of the oscillation amount detection counter  48  loaded above, and is stored in the previous oscillation amount memory. When the shaft stop position detection sensor  65  is turned on in Step P 31 , a stop signal is outputted to the drive motor-motor driver  38  in Step P 32 . Also, in Step P 33 , a stop signal is outputted to the oscillation drive motor-motor driver  45 . 
   Then, in Step P 34 , the shaft detent air cylinder valve  69  is opened in the direction of piston outgoing. Then, when the piston outgoing detection sensor  68   a  of the shaft detent air cylinder  64  is turned on in Step P 35 , the set oscillation amount is read from the oscillation amount memory in Step P 36 . 
   In Step P 37 , the previous oscillation amount is read from the previous oscillation amount memory. Then, in Step P 38 , the difference between the set oscillation amount read and the previous oscillation amount read is computed, and stored in the oscillation drive motor target rotation amount memory. Then, when the start switch is turned on in Step P 39 , it is determined in Step P 40  whether the difference between the set oscillation amount and the previous oscillation amount is 0 (zero) or not. If the difference is 0 (zero), the program shifts to Step P 50 . If the difference is not 0 (zero), an ON signal is outputted to the oscillation drive motor rotary encoder counter  49  in Step P 41 . Then, a determination is made in Step P 42  as to whether the difference between the set oscillation amount and the previous oscillation amount is smaller than 0 (zero). 
   If the difference is smaller in Step P 42 , a normal rotation signal is outputted to the oscillation drive motor-motor driver  45  in Step P 43 . If the difference is larger in Step P 42 , a reverse rotation signal is outputted to the oscillation drive motor-motor driver  45  in Step P 44 . Then, in Step P 45 , the count value is loaded from the oscillation drive motor rotary encoder counter  49 . Then, in Step P 46 , the rotation amount of the oscillation drive motor  10  is computed from the loaded count value, and stored in the current rotation amount memory for the oscillation drive motor. 
   Then, in Step P 47 , it is determined whether the current rotation amount of the oscillation drive motor obtained by computation agrees with the target rotation amount of the oscillation drive motor. If there is no agreement, the program returns to Step P 45 . If there is agreement, a stop signal is outputted to the oscillation drive motor-motor driver  45  in Step P 48 . 
   Then, in Step P 49 , an OFF signal and a reset signal are outputted to the oscillation drive motor rotary encoder counter  49 . Then, if it is determined that the start switch is turned on in Step P 50 , whereafter the shaft detent air cylinder valve  69  is opened in the direction of piston incoming in Step P 51 . Then, when the piston incoming detection sensor  68   b  of the shaft detent air cylinder  64  is turned on in Step P 52 , the program proceeds to Step P 53  and terminates oscillation amount control. 
   In Step P 53 , it is determined whether the rotational speed of the drive motor  28  has been reentered into the drive motor rotational speed setting device  37 . If it has not been reentered, the program shifts to Step P 61 . If it has been reentered, the drive motor rotational speed entered into the drive motor rotational speed setting device  37  is loaded and stored in the drive motor rotational speed memory in Step P 54 . 
   Then, in Step P 55 , the drive motor rotational speed is read from the drive motor rotational speed memory, whereafter the read drive motor rotational speed is outputted to the drive motor-motor driver  38  in Step P 56 . Then, the output frequency of the drive motor rotary encoder  27  is loaded in Step P 57 . Then, in Step P 58 , the current rotational speed of the drive motor  28  is computed from the output frequency of the drive motor rotary encoder  27 , and stored in the current rotational speed memory for the drive motor. 
   Then, in Step P 59 , the rotational speed of the oscillation drive motor  10  is computed from the current rotational speed of the drive motor obtained by computation, and stored in the rotational speed memory for the oscillation drive motor. Then, in Step P 60 , the rotational speed of the oscillation drive motor  10  obtained by computation is outputted to the oscillation drive motor-motor driver  45 , and the program proceeds to Step P 61 . 
   Then, when it is determined that a home position signal is outputted from the oscillation drive motor rotary encoder  9  in Step P 61 , the count value is loaded from the rotation deviation detection counter  41  in Step P 62 . Then, a reset signal is outputted to the rotation deviation detection counter  41  in Step P 63 . 
   Then, in Step P 64 , a deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9  is computed from the count value loaded above, and the computed deviation is stored in the rotation deviation memory. Then, in Step P 65 , the set oscillation phase is read from the oscillation phase memory. 
   Then, in Step P 66 , the difference between the above deviation obtained by computation, i.e., the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 , and the set oscillation phase read is computed, and stored in the oscillation phase difference memory. Then, in Step P 67 , the output frequency of the drive motor rotary encoder  27  is loaded. 
   Then, in Step P 68 , the current rotational speed of the drive motor  28  is computed from the output frequency of the drive motor rotary encoder  27  loaded, and stored in the drive motor current rotational speed memory. Then, in Step  69 , it is determined whether the current rotational speed of the drive motor  28  obtained by computation is 0 (zero). If it is 0, a stop signal is outputted to the oscillation drive motor-motor driver  45  in Step P 70  to terminate oscillation phase control. 
   If the rotational speed is not 0 in Step P 69 , the rotational speed of the oscillation drive motor  10  is computed in Step P 71  from the difference between the deviation obtained by computation—the deviation between the home position signal of the drive motor rotary encoder  27  and the home position signal of the oscillation drive motor rotary encoder  9 —and the set oscillation phase, and from the current rotational speed of the drive motor  28  obtained by computation, and is stored in the oscillation drive motor rotational speed memory. Then, in Step P 72 , the rotational speed of the oscillation drive motor  10  obtained by computation is outputted to the oscillation drive motor-motor driver  45 , and the program returns to Step P 53  to continue oscillation phase control. 
   In the present embodiment, as described above, the shaft detent air cylinder  64  for restraining the rotation of the rotating shaft  6  is provided, and the operator manually loosens the shaft locking bolt  22   a , enabling the sleeve  12  and the rotating member  62  to be rotated relative to the rotating shaft  6  which supports the sleeve  12  and the rotating member  62 . Moreover, the rotation of the rotating shaft  6  is restrained by the shaft detent air cylinder  64  and, in this state, the sleeve  12  and the rotating member  62  are rotated by the oscillation drive motor  10  to adjust the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d . Thus, oscillation amount adjustment can be made semiautomatically with high accuracy using a motor or the like, whereby marked reduction of the working time is achieved. 
   During a routine operation, moreover, the disk  14  makes a grinding motion upon the oscillatory motion of the inclined shaft portion  7 . Thus, the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d  swing in the axial direction. At this time, the oscillating rollers  2   a ,  2   b ,  2   c ,  2   d  swing sequentially in shifted phases in accordance with the order of their arrangement. As a result, their ink distribution is performed in different phases, and their swing takes place individually, so that high quality printing free from shock can be done. In addition, the oscillation mechanism is compact, thus ensuring space saving. 
   Fourth Embodiment 
     FIG. 15  is a front sectional view of an oscillating roller swing device of an inking device in a printing press, showing a fourth embodiment of the present invention. 
   This embodiment is an embodiment in which the piston rod tip  64   a  of the shaft detent air cylinder  64  in the Third Embodiment is fitted into a round hole  66   b  formed in a part of the outer periphery of the rotating shaft  6  to lock the rotating shaft  6  and, in this state, the shaft locking bolt  22   a  is loosened (removed), whereafter the sleeve  12  is rotated by the oscillation drive motor  10  via a friction wheel  67 , thereby making it possible to adjust the oscillation amount of the oscillating rollers  2   a ,  2   b ,  2   c , and  2   d . The features of the present embodiment are the same as those of the Third Embodiment, except that the home position phase detection sensor  52 , such as an optical sensor, for detecting a phase home position reference at the outer peripheral surface of the sleeve  12  is fitted into the support plate (support portion)  4 . 
   In the present embodiment as well, oscillation amount adjustment is made semiautomatically using the oscillation drive motor  10 , whereby the same actions and effects as in the Third Embodiment are obtained. 
   While the present invention has been described by the above embodiments, it is to be understood that the invention is not limited thereby, but may be varied or modified in many other ways. For example, the dedicated oscillation drive motor  10  need not be used in the Third and Fourth Embodiments, and instead the rotating shaft  6  may be rotated and driven by the drive motor  28  via a gear mechanism. Such variations or modifications are not to be regarded as a departure from the spirit and scope of the invention, and all such variations and modifications as would be obvious to one skilled in the art are intended to be included within the scope of the appended claims.