Source: http://www.patentgenius.com/patent/7718922.html
Timestamp: 2018-03-22 14:15:03
Document Index: 375315127

Matched Legal Cases: ['art.\n3', 'art 111', 'art 111', 'art 111', 'art 111', 'art 111', 'arts 111', 'arts 111', 'art 111', 'art 223', 'art 224', 'art 223', 'art 223', 'art 223', 'art 224', 'art 224', 'art 224', 'art 223', 'art 224', 'art 321', 'art 321', 'art 322', 'art 322', 'art 322', 'art 322', 'art 322', 'art 324']

Optical processing apparatus - Patent # 7718922 - PatentGenius
7718922 Optical processing apparatus
Inventor: Fukunaka, et al.
Application: 11/492,824
Inventors: Fukunaka; Tomoko (Shiga, JP)
Ishiguro; Masashi (Hyogo, JP)
Watanabe; Mamoru (Hyogo, JP)
Yamashita; Kazuhiko (Hyogo, JP)
Sato; Masahiro (Hyogo, JP)
Inutsuka; Ryoji (Osaka, JP)
Takahashi; Kenji (Osaka, JP)
Yoneda; Toshikazu (Osaka, JP)
U.S. Class: 219/121.78; 219/121.63; 219/121.73; 228/103; 228/104; 228/180.5; 228/8; 356/402; 356/425
Field Of Search: 228/180.5; 228/102; 228/103; 228/104; 228/105; 228/223; 228/8; 228/43; 219/121.63; 219/121.61; 219/121.73; 219/121.74; 219/121.75; 219/616; 219/636; 219/121.78; 219/121.82; 219/121.83; 219/121.76; 356/402; 356/425
International Class: B23K 26/08; B23K 31/02
Foreign Patent Documents: 06169167; P2002-1521
Other References: Hayakawa Jun, Method and Device for Laser Beam Soldering, Aug. 2002, JPO and NCIPI, English Translation of JP-2002-001521. cited byother.
1. An optical processing apparatus comprising: a light source configured to produce light energy; a first optical path for guiding the light energy into a work; an opticaldevice disposed in the first optical path for shaping the light energy; a second optical path sharing part of the first optical path for guiding the light energy from the work to a photo receiving device; a driving device configured to change therelative positions of at least the optical device and the work; and a judging part of plural different colors arranged at a position different from the work, wherein: the photo receiving device detects a color of the work, the photo receiving devicedetects the color difference between the color of the work and each of the plural different colors of the judging part, the driving device moves the optical device to the judging part of a color out of the plural different colors which is different fromthe detected color of the work, and the optical device shapes the light energy which is guided into the judging part.
3. The optical processing apparatus of claim 1, further comprising: display means for displaying at least the image of the processing area of the work; and processing position detecting means for leading out the position of the work where thelight energy is located when the light energy shaped at least by the optical device is emitted to the work, wherein the display means displays the processing position led out by the processing position detecting means corresponding to the processing areaof the work.
4. The optical processing apparatus of claim 3, wherein the processing position detecting means comprises: means for recognizing the position of a processing head for holding at least the optical device, the second optical path and the photoreceiving device; and position detection correcting means for compensating the difference between the position of the work where the light energy is located when the light energy shaped by the optical device is emitted to the work and the positiondetected by the recognizing means.
7. The optical processing apparatus of claim 1, further comprising image distortion correcting means positioned at the second optical path and different from the first optical path, and positioned before the photo receiving device.
Hitherto, a optical processing apparatus comprises light energy output means for producing light energy, a first optical path for guiding the light energy into a work, optical means disposed in the first optical path for shaping the light energy,a second optical path sharing part of the first optical path for guiding the light from the work to photo receiving means, and driving means for changing the relative positions of at least the optical means and work.
in which a judging part of a color different from deposits sticking to the optical means is provided, and the optical means is positioned at the judging part, and the photo receiving means detects the sticking status of deposits to the opticalmeans.
wire solder leading end position detecting means for detecting at least the position of leading end portion of the wire solder, and detecting failure of soldering when the leading end portion of the wire solder is not positioned at the processingposition.
However, in the detecting method of sticking state of deposits in the conventional optical processing apparatus, if a same color as deposits sticking to the optical means is present in a position of background of the optical means, the stickingstatus cannot be detected accurately.
The invention is devised to detect the sticking status accurately if a same color as deposits sticking to the optical means is present in a position of background of the optical means. Examples of the invention are described in exemplaryembodiments 1 to 7 below.
A first exemplary embodiment of the invention is described below while referring to FIGS. 1, 8, and 9. Light energy output means 101 produces light energy as processing energy source. A first optical path 102 of light energy guides the lightenergy into a work 106. A half mirror 103 has a characteristic of transmitting wavelength components of light energy and reflecting visible light components. Optical means 104 shapes the light energy, and focuses the light emitted from the light energyoutput means 101 into a light of required beam diameter. Its focusing characteristic is determined in conformity to the divergent property of light from the light energy output means 101. A detachable protective glass 105 prevents foreign matter ofprocessing from sticking to the optical means 104. By replacing it when the light energy output is lowered due to foreign matter deposits, the optical output is recovered, and the maintenance is facilitated. The work 106 is the object of processing inthis apparatus. A mirror 107 guides the light reflected from the work 106 into photo receiving means. Photo receiving means 108 detects the light reflected from the work 106 as an image of the work. An optical path 109 is an optical path of the photoreceiving means. The block from the light energy output means 101 to the optical path 109 is called a processing head. Driving means 110 changes relative positions of the work 106 and deposit judging part 111 and processing head. The deposit judgingpart 111 of plural different colors can judge the deposits.
Light emitted from the light energy output means 101 passes the half mirror 3 by way of the first optical path 102, and enters the optical means 4. This light is focused into a necessary size, and is emitted to the work 106 by way of theprotective glass 105, and the work 106 is machined by the focused light.
On the other hand, the light reflected by the work 106 propagates the second optical path 109 by way of the protective glass 105, optical means 104, and half mirror 103. The light is reflected again by the mirror 107, and enters the photoreceiving means 108.
The driving means 110 can change the relative positions of the work 106, deposit judging part 111, and processing head. On the basis of the image information of the work 106 obtained from the photo receiving means 108, the processing head ismoved to the processing position of the work 106 by the driving means 110, and a light beam is emitted from the processing head and processing is done.
If the work and deposits are of same color, if attempted to detect deposits at the processing position, it is hard to distinguish the deposits as shown in FIG. 8. Therefore, to detect the deposits in the background of a different color from thedeposits, in deposits detection operation of the protective glass 105, the color of the work 106 is detected, and the processing head is moved by the driving means 110 to the deposits judging part 111 of a most different color from the deposits stickingto the protective glass 105. Then the photo receiving means 108 detects the sticking status of deposits.
Deposits can be roughly predicted from the work 106 or processing process (soldering, cutting, etc.), and the deposits judging part 111 is determined accordingly. Not limited to a single detection of deposits, by continuing detection by movingsequentially to deposits detecting parts 111 of different colors, deposits of plural colors can be detected effectively.
Thus, in the conventional method of detecting the sticking status of deposits, in the location of same color as the deposits sticking to the optical means, the sticking status cannot be detected accurately. By contrast, in the exemplaryembodiment, deposits judging parts 111 of plural different colors are provided, and judging from the color of the work 106, by moving the positions sequentially from the judging part of the most different color from the deposits sticking to the opticalmeans 104, the sticking status of deposits to the optical means 104 can be easily detected by the photo receiving means 108.
In the optical processing apparatus thus configured, the operation is explained. Light emitted from the light energy output means 101 passes the half mirror 103 along the first optical path 102, and enters the optical means 104. This light isfocused into a necessary size, and is emitted to the work 106 by way of the protective glass 105. The work 106 is machined by this focused light. The light reflected by the work 106 passes through the protective glass 105 and optical means 104, and isreflected by the half mirror 103 to get into the second optical path 109, and is reflected again by the mirror 107, and enters the photo receiving means 108. This area is called the processing head, and is installed at the lower side of the work, andthe lower side of the work 106 can be machined.
Therefore, if the processing side of the work 106 is at the lower side, it is not required to invert the work 106, and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work 106 or dropping of thework or parts mounted thereon.
What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work 106, and that it further comprises display means 112 for displaying the image of the work 106 obtainedby the photo receiving means 108, recognition means 113 for detecting the position of the processing head for leading out the processing position, and processing position detecting means 114 for leading out the processing position. In this exemplaryembodiment, if the processing side of the work 106 is at the lower side, it is not required to invert the work 106, and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work 106 or dropping of the workor parts mounted thereon.
Moreover in this exemplary embodiment, the processing position detecting means 114 detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means 113. Thissignal is sent to the display means 112, and is displayed as an image. The image of the work 106 is converted into an electric signal by the photo receiving means 108, and is displayed as an image of processing position of the work 106 by the displaymeans 112.
Having such display means 112, if the processing side is at the lower side of the work 106 and is hard to recognize visually, position teaching or correction confirmation may be easily done. Further, by displaying the image of the work 106 andthe present light beam position in the display means 112, the location of the present light beam in the work or the processing position can be easily known. Also because of off-line teaching, the position can be taught without stopping the productionline.
What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work 106, and that it further comprises display means 112 for displaying the image of the work 106 obtainedby the photo receiving means 108, recognition means 113 for detecting the position of the processing head for leading out the processing position, processing position detecting means 114 for leading out the processing position, and processing positiondetection correcting means 115.
In this exemplary embodiment, if the processing side of the work 106 is at the lower side, it is not required to invert the work 106, and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work 106or dropping of the work or parts mounted thereon.
Moreover in this exemplary embodiment, the processing position detecting means 114 detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means 113. Thissignal is sent to the display means 112, and is displayed as an image. The image of the work 106 is converted into an electric signal by the photo receiving means 108, and is displayed as an image of processing position of the work 106 by the displaymeans 112. Herein, the processing position detection correcting means 115 detects the difference between the position of processing area of the work 106 by the photo receiving means 108 and the position of light beam emitted from the processing head,and sends the information to the processing position detecting means 114. The processing position detecting means 114 positions the processing head by compensating so as to eliminate the position error by the driving means 110 on the basis of this errorposition information, and processing is started by manipulating the output means 101 of the processing head.
In FIG. 5, the processing head comprising the light energy output means 101 to optical path 109, the driving means 110, and the deposits judging part 111 are same as in exemplary embodiment 1, and the explanation is omitted. What ischaracteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work 106, and that it further comprises display means 112 for displaying the image of the work 106 obtained by the photoreceiving means 108, recognition means 113 for detecting the position of the processing head for leading out the processing position, processing position detecting means 114 for leading out the processing position, processing position detectioncorrecting means 115, and image memory means 116.
The image memory means 116 stores image data of the work 106. The image memory means 116 displays its image in the display means 112. The present light beam emitting position is also displayed in the display means 112 by means of the processingposition detecting means 114.
What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work 106, and that it further comprises display means 112 for displaying the image of the work 106 obtainedby the photo receiving means 108, recognition means 113 for detecting the position of the processing head for leading out the processing position, processing position detecting means 114 for leading out the processing position, processing positiondetection correcting means 115, image memory means 116, and a wire solder feed device 117 for feeding a wire solder to the processing area.
Moreover, the processing position detecting means 114 detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means 113. This signal is sent to the displaymeans 112, and is displayed as an image. The image of the work 106 is converted into an electric signal by the photo receiving means 108, and is displayed as an image of processing position of the work 106 by the display means 112. Herein, theprocessing position detection correcting means 115 detects the difference between the position of processing area of the work 106 by the photo receiving means 108 and the position of light beam emitted from the processing head, and sends the informationto the processing position detecting means 114. The processing position detecting means 114 positions the processing head by compensating so as to eliminate the position error by the driving means 110 on the basis of this error position information, andprocessing is started by manipulating the output means 101 of the processing head.
What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work 106, and that it further comprises display means 112 for displaying the image of the work 106 obtainedby the photo receiving means 108, recognition means 113 for detecting the position of the processing head for leading out the processing position, processing position detecting means 114 for leading out the processing position, processing positiondetection correcting means 115, image memory means 116, a wire solder feed device 117 for feeding a wire solder to the processing area, and image distortion compensating means 118 for compensating the image distorted the optical means 104.
Thus, by the image distortion compensating means 118 disposed before the photo receiving means 108, a distortion-free image of the work 106 can be obtained in the photo receiving means 108. As a result, deviation of processing position or sizeof light focusing diameter can be easily known, and the teaching time is shortened and processing of high precision is realized. As described in the foregoing exemplary embodiments, according to the invention, the sticking status of deposits can bedetected more accurately than in the prior art, and the more accurate processing is possible than in the prior art.
Incidentally, in the conventional optical processing apparatus and the production facility using the same, if the wire solder is not supplied normally, the worker visually detects defective soldering after the soldering process, and stops theoperation manually. At this time, the worker cuts of f the wire solder manually, and restarts the operation manually.
The invention prevents defective soldering from occurring. If the processing side is at the lower side of the work, it is not required to invert the work. While holding the wire solder leading end in a normal state and also other positions innormal state, a stable soldering process of high quality can be continued. Further according to the invention, position teaching and correction confirmation can be done easily. If the positioning precision of the work is poor, a high precision ofprocessing position is obtained. Moreover, since the processing area can be taught while observing the image of the work, off-line teaching is possible. The image distortion is small, and the precision is not lowered in the case of teaching, confirmingthe correction, or recognizing and compensating.
Output means 201 produces a light energy. A first optical path 202 shows an optical path of the light energy for guiding the light energy to the work. A half mirror 203 has a function of transmitting wavelength components of light energy, andreflecting visible ray components. Optical means 204 shapes the light energy, and focuses the light emitted from the light energy output means 201 into a necessary beam diameter. Its focusing characteristic is determined depending on the divergentcharacteristic of the light energy. A protective glass 205 is detachable, and prevents foreign matter generated in processing from sticking to the optical means 204. If the light energy output is lowered due to deposits of foreign matter, it isreplaced and the optical output is recovered, and the maintenance is facilitated. A work 206 is the object of processing of this apparatus. A mirror 207 guides the light of the work to photo receiving means 208. The photo receiving means 208 is meansfor viewing the image of the work. A second optical path 209 shows an optical path of the photo receiving means 208. A processing head is composed of these elements from the light energy output mean 201 to the second optical path 209.
Driving means 210 changes relative positions of the work 206 and optical means 204. First moving means 212 moves the processing head in the vertical direction of the work 206. Second moving means 213 moves a wire solder feed device 211 in thevertical direction of the work 206. Third moving means 214 moves the wire solder feed device 211 in the lateral direction of the work 206. Fourth moving means 215 moves the wire solder feed device 211 in a direction of drawing an arc of the work 206. Display means 216 displays the image of the work 206 obtained from the photo receiving means 208.
Recognition means 217 detects the position of the processing head. Processing position detecting means 218 detects the position of light beam emitted from the processing head on the basis of the information of the processing head positionrecognition means 217. Processing position detection correcting means 219 detects the difference between the position of processing area of the work 206 by the photo receiving means 208 and the position of light beam emitted from the processing head,and sends the information to the processing position detecting means 218. Image memory means 220 stores image data of the work 206. Image distortion compensating means 221 is disposed between the mirror 207 and photo receiving means 208 in order tocompensate the image distorted by the optical means 204.
Leading end shape detecting means 222 detects the leading end shape of wire solder. A solder fusing part 223 is a position for discarding unnecessary portion and fusing and sticking as solder in order to keep the solder leading end portion in anappropriate state. A drop preventive part 224 is a part for preventing drop of unnecessary solder provided at the lower side in the direction of gravity to the solder fusing part 223.
First of all, light emitted from the light energy output means 201 passes the half mirror 203 along the first optical path 202, and enters the optical means 204, in which this light is focused into a necessary size, and is emitted to the work 206by way of the protective glass 205. The work 206 is machined by this focused light. The light reflected by the work 206 passes through the protective glass 205 and optical means 204, and is reflected by the half mirror 203 to get into the secondoptical path 209, and is reflected again by the mirror 207, and enters the photo receiving means 208 by way of the image distortion compensating means 221.
The wire solder feed means 211 feeds the solder to the heated irradiation position and performs soldering when the light beam is emitted to the specified position of the work by the processing head. At this time, the first moving means 212adjusts the irradiation diameter depending on the work, and the second moving means 213 and third moving means 214 adjust the wire solder feed position depending on the change of irradiation diameter. Further, the fourth moving means 215 adjusts thewire solder feed position 211 so that the wire solder feed means 211 may not interfere with the side wall or the like in the apparatus depending on the shape of the work 206.
The processing position detecting means 218 detects the position of the light beam emitted from the processing head on the basis of the information of the processing head position recognition means 217, and this signal is sent to the displaymeans 216, and displayed as an image. The image of the work 206 is converted into an electric signal by the photo receiving means 208, and is displayed as the image of the processing area of the work 206 by the display means 216.
The processing position detecting means 218 detects the position of the light beam emitted from the processing head on the basis of the information of the processing head position recognition means 217. This signal is sent to the display means216, and is displayed as an image. The image of the work 206 is converted into an electric signal by the photo receiving means 208, and is displayed as the image of the processing area of the work 206 by the display means 216. Herein, the processingposition detection correcting means 219 detects the difference between the position of processing area of the work 206 by the photo receiving means 208 and the position of light beam emitted from the processing head, and sends the information to theprocessing position detecting means 218. The processing position detecting means 218 positions the processing head so as to eliminate the position error by the driving means 210 on the basis of this error position information, and processing is startedby manipulating the light energy output means 201 of the processing head.
The leading end shape detecting means 222 judges the leading end shape of wire solder. If judged to be abnormal, the driving means 210 moves the wire solder leading end portion to the solder fusing part, and light beam is emitted by the lightenergy output means 201, and the solder fusing part 223 is heated over the solder melting point. Consequently, the wire solder feed means 211 feeds the wire solder, and presses to the solder fusing part, and an unnecessary portion of leading end isfused and adhered to the solder fusing part 223. At this time, if the wire solder leading end falls down, it is received by the unnecessary solder drop preventive part 224, and hence it does not stick to the protective glass or the like. In this way,while keeping the wire solder leading end in normal state and other parts also in normal state, stable soldering process of high quality can be continued.
The light beam may be emitted anywhere as far as above the solder fusing part, and the waste solder can be fused by its heat conduction, and it is also possible to prevent the light beam from being emitted to the unnecessary solder droppreventive part 224. Further, by using a material capable of transmitting the light beam in the unnecessary solder drop preventive part 224, effects of heat can be prevented.
Further, if the processing side of the work 206 is at the lower side, it is not required to invert the work 206, and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work 206 or dropping of thework or parts mounted thereon.
In an abnormal state of the wire solder leading end, in particular, in a folded state, if pressing directly to the solder fusing part 223, only the folded part is fused, and the folded wire solder leading end may fall down. At this time,however, it is received by the unnecessary solder drop preventive part 224, and hence it does not stick to the protective glass or the like. In this way, while keeping the wire solder leading end in normal state and other parts also in normal state,stable soldering process of high quality can be continued.
The processing position detecting means 218 detects the position of the light beam emitted from the processing head on the basis of the information of the processing head position recognition means 217. This signal is sent to the display means216, and is displayed as an image, and the image of the work 206 is converted into an electric signal by the photo receiving means 208, and is displayed as the image of the processing area of the work 206 by the display means 216. Therefore, if theprocessing area is small or the processing area is at the lower side of the work and is hard to be recognized visually, it can be easily observed, and if the position is deviated, it can be recognized easily.
Further, by the image distortion correcting means 221 disposed before the photo receiving means 208, the image distortion can be suppressed, and the precision is not lowered at the time of teaching, checking correction or compensatingrecognition. Thus, according to the invention, by emitting light beam, the solder fusing part can be heated over the solder melting point, and the unnecessary portion of the leading end can be fused and adhered to the solder fusing part. Therefore,without requiring any particular heating device, and without space limitation, the wire solder leading end can be kept in normal state while saving the cost, and stable soldering process of high quality can be continued.
In the conventional optical processing apparatus described above, the solder feed method for soldering is not designed to detect the position of the solder leading end at the processing area of the work, and the solder is supplied for apredetermined solder feed time and at feed speed, whether the leading end of the solder is short or long for the processing area. Hence, a proper amount of solder is not supplied for the processing area, and excessive soldering or insufficient solderingoccurs, and it is hard to assure the quality.
Light energy output means 301 is a processing energy source for producing a light energy. A first optical path 302 shows an optical path of the light energy for guiding the light energy to the work. A half mirror 303 has a function oftransmitting wavelength components of light energy, and reflecting visible ray components. Optical means 304 shapes the light energy, and focuses the light emitted from the light energy output means 201 into a necessary beam diameter. Its focusingcharacteristic is determined depending on the divergent characteristic of the light energy source. A detachable protective glass 305 prevents foreign matter generated in processing from sticking to the optical means 304. If the light energy output islowered due to deposits of foreign matter, by replacing the protective glass 105, the optical output is recovered, and the maintenance is facilitated. A work 306 is the object of processing of this apparatus. A mirror 307 guides the light of the workto photo receiving means 308. The photo receiving means 308 is means for viewing the image of the work and the leading end portion of the wire solder. A second optical path 309 shows an optical path of the photo receiving means 308. A processing headis composed of these elements from the light energy output mean 301 to the second optical path 309. Driving means 310 changes relative positions of the work 306 and optical means 304. A wire solder feed device 311 feeds a wire solder. Leading endshape detecting means 312 detects the shape of leading end of wire solder.
First of all, light emitted from the light energy output means 301 passes the half mirror 303 along the first optical path 302, and enters the light energy shaping means 304. Herein, this light is focused into a necessary size, and is emitted tothe work 306 by way of the protective glass 305. The work 306 is machined by this focused light. The light reflected by the work 306 passes through the protective glass 305 and optical means 304, and is reflected by the half mirror 303 to get into thesecond optical path 309, and is reflected again by the mirror 307, and enters the photo receiving means 308. For local heating by focusing the light energy, driving means 310 is provided for relatively moving the processing head and the work, whilesuppressing heat effects on the work, and hence the processing region can be expanded. Also by the wire solder feed means 311, the light beam can be emitted to the specified position of the work by the processing head, and the solder is supplied intothe heated irradiation position, and thereby soldering can be executed. Before or after soldering in the processing position, the leading end shape detecting means 312 judges the leading end of the solder 314 supplied from the wire solder nozzle 313,determines normal when it is as shown in FIG. 19. On the other hand, if the leading end of the solder 314 is as shown in any one of FIG. 20A to FIG. 20D, the leading end shape detecting means 312 judges the position is not appropriate, and detectssolder failure.
By this constitution and configuration, if the processing side of the work 306 is at the lower side, it is not required to invert the work 306, and inverting device is not needed, and hence, it is free from risk of deviation of position due toinversion of the work 306 or dropping of the work or parts mounted thereon.
This exemplary embodiment further comprises display means 315 for displaying the image of the work 306 obtained by the photo receiving means 308, recognition means 316 detecting the position of the processing head, and processing positiondetecting means 317.
The processing position detecting means 317 detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means 316. This signal is sent to the display means315, and is displayed as an image. The image of the work 306 is converted into an electric signal by the photo receiving means 308, and is displayed as an image of processing position of the work 306 by the display means 315. Accordingly, if theprocessing area is small, or the processing area is at the lower side of the work and is hard to recognize visually, it can be observed easily by this displayed image, or if the position is deviated, it can be easily detected, and position teaching orcorrection confirmation may be easily done.
In the optical processing apparatus thus configured, the operation is explained below. The processing position detecting means 317 detects the position of light beam emitted from the processing head on the basis of the information from theprocessing head position recognition means 316. This signal is sent to the display means 315, and is displayed as an image. The image of the work 306 is converted into an electric signal by the photo receiving means 308, and is displayed as an image ofprocessing position of the work 306 by the display means 315. Herein, the processing position detection correcting means 318 detects the difference between the position of processing area of the work 306 by the photo receiving means 308 and the positionof light beam emitted from the processing head, and sends the information to the processing position detecting means 317. The processing position detecting means 317 positions the processing head by compensating so as to eliminate the position error bythe driving means 310 on the basis of this error position information, and processing is started by manipulating the light energy output means 301 of the processing head. By such position detection and correction motion, if the positioning precision ofthe work is low, the processing position precision can be assured.
In the optical processing apparatus thus configured, the operation is explained below. The processing position detecting means 317 detects the position of light beam emitted from the processing head on the basis of the information from theprocessing head position recognition means 316. This signal is sent to the display means 315, and is displayed as an image. The image of the work 306 is converted into an electric signal by the photo receiving means 308, and is displayed as an image ofprocessing position of the work 306 by the display means 315. The processing head is installed in an acting direction of gravity on the work 306, and relative positions of the processing head and the work 306 can be changed by the driving means 310. Image data of the work 306 is stored in the image memory means 317. The image memory means 317 displays the image in the display means 313. The present light beam emitting position is also displayed in the display means 313 by the processing positiondetecting means 315. By this image memory means, the processing position can be taught off-line while observing the image of the work.
In the optical processing apparatus thus configured, the operation is explained below. The light coming out from the work 306 passes through the protective glass 305 and optical means 304, and is reflected by the half mirror 303 to get into thesecond optical path 309, and is reflected again by the mirror 307, and gets into the photo receiving means 308 by way of the image distortion correcting means 320. By the image distortion correcting means 320 disposed before the photo receiving means308, distortion of image can be suppressed, and the precision is not lowered at the time of teaching, display confirmation or recognition compensation.
In the optical processing apparatus thus configured, the operation is explained below. The driving means 310 can change relative positions of the work 306, deposits judging part 321 and the processing head, and after moving the processing headto the deposits judging part 321, sticking status of deposits is detected by the photo receiving means 308. Depending on the sticking status, by error stop before processing, the operator is warned of necessity of maintenance. Thus, the protectiveglass 305 is always in normal state during processing, and stable soldering of high quality can be continued. For judging deposits, judging patterns of plural different colors are prepared, so that various types of sticking status can be judged.
This exemplary embodiment further comprises a solder fusing part 322 for fusing and sticking unnecessary portion as waste solder in order to keep the solder leading end in appropriate state, and solder fusing part heating means 323 for heatingthe solder fusing part 322 over the solder melting point.
In the optical processing apparatus thus configured, the operation is explained below. The leading end shape detecting means 312 judges the state of the leading end shape of wire solder. If judged to be abnormal, the driving means 310 moves thewire solder leading end to the solder fusing part, and moves closer to the solder fusing part 322 heated over the solder melting point by the solder fusing part heating means 323. The wire solder feed means 311 feeds the wire solder, and presses to thesolder fusing part, and the unnecessary portion of the leading end is fused and stuck to the solder fusing part 322. At this time, the solder fusing part may be heated beforehand, or may be heated quickly only when required to heat over the meltingpoint.
In the optical processing apparatus thus configured, the operation is explained below. When the leading end of the wire solder is in abnormal state, and in particular when folded, if it is directly fitted to the solder fusing part 322, only thefolded portion is fused, and the folded leading end of the wire solder may drop. It is received by the undesired solder drop preventive part 324, and hence it is not stuck tot he protective glass or the like. Thus, while keeping the leading end of thewire solder in normal state and also keeping other parts in normal state, stable soldering of high quality can be continued.
As explained in the exemplary embodiments, the invention can detect the position of leading end portion of wire solder, so that a proper amount of solder can be supplied, and excessive soldering or solder failure can be prevented, and thesoldering condition suited to the work can be realized, and soldering of high quality can be performed.