Deformation processing apparatus and method for correcting surface runout

The clutch hub includes a sheet-metal hub member which has an axial member projected from the center of its plate surface, and also includes an annular armature which is fixed to an outer peripheral portion of the axial member. First mounting the axial member of the clutch hub downward on a support member and thereby elastically supporting the end surface of the armature by the support member; holding the axial member of the clutch hub using a chuck; locating a fixing member just under a portion of a maximum runout portion of an inner hub; contacting a cylindrical end surface of a pressing member with an upper surface of the inner hub using pressure; and plastically deforming the inner hub by a pressing force of the pressing member using the locating portion of the fixing member as a fulcrum, which thereby corrects an inclination of the axial member.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based on and claims the benefit of priority from earlier Japanese Patent Application No. 2012-154515 filed Jul. 10, 2012, the description of which is incorporated herein by reference.

BACKGROUND

1. Technical Field of the Invention

The present invention relates to a deformation processing apparatus for correcting runout caused in the surface of an armature in a clutch hub which is used for a power transmission device.

2. Related Art

For example, an electromagnetic clutch is used in connecting a compressor of an air conditioner installed in an automobile to an engine that serves as a drive source. An electromagnetic clutch is configured such that an armature of a clutch hub faces a rotor rotated and driven by an engine, and that an inner hub is connected to a compressor-side drive shaft. The armature is attracted to the rotor by an electromagnetic force, while torque is transmitted to the compressor via the inner hub that integrally rotates with the armature.

FIG. 1is a schematic diagram illustrating a clutch hub. As shown inFIG. 1, a spline shaft of a compressor is ensured to engage with a spline hole102which is positioned at the center of a hub member101. An armature103has an annular shape and is riveted to an outer periphery of the hub member101. In this case, if the accuracy of dimension and the accuracy of assemblage are insufficient, the axis of the hub member101will be inclined when the armature103is assembled to a rotor. In other words, runout will be caused in an armature surface104when the hub member101turns around on the axis of the hub member.

That is to say, in order to effectively transmit torque, the armature surface104is required to be perpendicular to the spline shaft (i.e. normal line D with respect to an inner end face C of the spline hole102). Accordingly, as shown inFIGS. 2A and 2B, when runout is caused in the armature surface104of the clutch hub (in other words, when the axis of the hub member101is inclined), a process of grinding the end surface of the armature103and removing the runout has conventionally been performed to suppress the runout so as to be lower than a standard value.

As conventional art, JP-A-H06-291475 discloses a method of performing high-spin deformation processing, instead of performing cutting or grinding, in the course of manufacturing a chassis used for a precision apparatus, so that accuracy of dimension is obtained in a processed sheet-metal product or in a molded product. Specifically, in this method, a mounting seat is provided to a sheet-metal chassis so as to be projected therefrom, followed by pressing a pressing member, which makes a conical runout motion, against the projected surface, thereby reducing the surface level to a predetermined level.

FIGS. 2A and 2Bshows a deformation processing method for correcting surface runout of a clutch hub, which is based on conventional grinding, and a relationship between amount of runout and processing time. As shown inFIGS. 2A and 2B, in correcting surface runout using grinding, the amount of grinding increases as the amount of runout is increased. Therefore, a lot of time is spent for the processing, drastically reducing the productivity. On the other hand, while the technique disclosed in JP-A-H06-291475 is effective in entirely reducing the level of a projected portion, it is not suitable for correcting runout in the armature surface of a clutch hub.

It is thus desired to provide an apparatus for correcting surface runout, which is able to accurately and quickly correct runout caused in the armature surface of a clutch hub to enhance productivity.

SUMMARY

As an exemplary embodiment, the present application provides a deformation processing apparatus for correcting surface runout73. The apparatus is used for correcting runout caused in an end surface of an annular armature of a clutch hub. Such a clutch hub includes a sheet-metal hub member that has an axial member projected from the center of its plate surface, and also includes the annular armature which is fixed to the hub member so as to be located in an outer peripheral portion of the hub member near the axial member.

The apparatus includes a support member, a press mechanism and a fixing member. The support member is used for placing thereon the clutch hub, with the axial member, as an object to be corrected, being oriented downward, and for elastically supporting the end surface of the armature. The press mechanism has a cylindrical pressing member which is positioned above the hub member. The press mechanism allows a driving means to descend the pressing member to press the hub member. The fixing member is positioned below the hub member and includes a locating portion which is opposed to a predetermined position of the plate surface, according to the runout caused in the end surface of the armature.

When a pressing force is applied to the pressing member by the pressing mechanism, the pressing member plastically deforms the plate surface of the hub member by using the locating portion as a fulcrum, and thereby an inclination of the axial member with respect to the end surface of the armature can be corrected. (First aspect of the deformation processing apparatus for correcting surface runout of the present invention)

When runout is corrected using the deformation processing apparatus for correcting surface runout73of the present configuration, an amount of runout in the end surface of the clutch hub is measured in advance. Further, the position of the runout is permitted to coincide with the locating portion of the fixing member and then the end surface of the armature is placed on the support member. In this case, the axial member of the hub member is inclined with respect to the axis of the pressing member. Then, when the press mechanism is driven to descend the pressing member and press the hub member of the clutch hub, the entire clutch hub which is elastically supported by the support member is depressed. In this process, a predetermined position of the plate surface of the hub member is pressed against the locating portion of the fixing member. Then, the cylindrical pressing member depresses the outer periphery of the hub member to thereby deform the plate surface, with the locating portion being used as a fulcrum, and corrects the inclination of the axial member.

Accordingly, when an amount of depression of the pressing member is set according to an amount of runout in the end surface of the armature, the end surface of the armature is permitted to be perpendicular to the axial member, thereby correcting surface runout. Accordingly, in the event the amount of runout is comparatively large, it is no longer necessary to spend a lot of time for the correction of the runout, as would have been necessary in the grinding based on the conventional art. As a result, productivity is greatly enhanced.

The deformation processing apparatus for correcting surface runout73may preferably include a chuck. The chuck is brought into contact with the side faces of the axial member of the hub member to limit displacement in the rotation direction of the clutch hub. (Second aspect of the deformation processing apparatus for correcting surface runout of the present invention)

According to the apparatus for correcting surface runout having the present configuration, the axial member of the clutch hub is held by the chuck. Accordingly, when the pressing member is pushed down, displacement in the rotation direction of the clutch hub is suppressed. Thus, the contact position, at which the locating portion contacts the plate surface of the hub member, is prevented from being deviated. As a result, surface runout is corrected with good accuracy.

In the deformation processing apparatus for correcting surface runout73, the support member is configured by a retainer plate and elastic support legs. The retainer plate is brought into contact with the end surface of the armature. Each of the elastic legs includes in its upper portion a spring member that urges the retainer plate upward. (Third aspect of the deformation processing apparatus for correcting surface runout of the present invention)

According to the deformation processing apparatus for correcting surface runout73having the present configuration, the support member may specifically have a configuration in which the retainer plate, on which the end surface of the armature is placed, is urged upward by the spring members provided to the elastic support legs. Thus, with the descending of the pressing member, the end surface of the armature can be uniformly and elastically supported.

Further, in the deformation processing apparatus for correcting surface runout73, the amount of depression of the pressing member given by the press mechanism may be the sum of an amount of plastic deformation which depends on the amount of runout in the end surface of the armature measured in advance and an amount of elastic deformation of the hub member. (Fourth aspect of the deformation processing apparatus for correcting surface runout of the present invention)

According to the deformation processing apparatus for correcting surface runout73having the present configuration, the press mechanism sets an amount of depression of the pressing member, taking account of an amount of rebound attributed to the elastic deformation of the hub member. When the amount of elastic deformation is added to the amount of plastic deformation, which depends on the amount of runout in the end surface of the armature, an amount of correction of surface runout corresponding to the amount of plastic deformation is obtained after depression of the hub member.

Further, the locating portion of the fixing member may preferably be arranged on a line connecting between a maximum-runout position in the end surface of the armature measured in advance and the axial member. (Fifth aspect of the deformation processing apparatus for correcting surface runout of the present invention)

According to the deformation processing apparatus for correcting surface runout73having the present configuration, the position of the clutch hub is determined so that the maximum-runout position in the end surface of the armature coincides with the position of the fixing member of the clutch hub. Accordingly, when the plate surface is partially deformed, with the locating portion being used as a fulcrum, the axial member is relatively displaced in a direction in which the amount of runout is large, thereby efficiently correcting runout.

Further, the locating portion of the fixing member may preferably be formed on an arc-shaped surface which is coaxial with the hub member. (Sixth aspect of the deformation processing apparatus for correcting surface runout of the present invention)

According to the deformation processing apparatus for correcting surface runout73having the present configuration, the locating portion of the fixing member has an arc-shaped surface which is coaxial with the hub member. Thus, when the outer periphery of the plate surface of the hub member is depressed by the coaxially-positioned cylindrical pressing member, the hub member is prevented from being locally imposed with an excessive load. As a result, the load applied to the plate surface, which is in contact with the locating portion, is reduced to thereby enable effective correction of runout.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to the accompanying drawings, hereinafter is described a first embodiment of the present invention.FIG. 3shows a basic structure of a deformation processing apparatus for correcting surface runout73of the present invention. The basic structure configures a part of a deformation processing system50for correcting surface runout shown inFIG. 4. InFIG. 3, the deformation processing apparatus for correcting surface runout73has a clutch hub1as an object of correcting surface runout. The apparatus includes a support member2and a chuck6for supporting the clutch hub1. The apparatus also includes a fixing member3that faces a lower surface of a hub member10of the clutch hub1. The apparatus further includes a cylindrical pressing member4that faces an upper surface of the hub member10of the clutch hub1. The apparatus further includes a servo press mechanism5as a press mechanism that drives the pressing member4for the correction of surface runout. The support member2elastically supports an armature14of the clutch hub1, while the chuck6holds an axial member16of the clutch hub1.

FIG. 4is a schematic diagram of the processing system50that includes the deformation processing apparatus for correcting surface runout73. In the correction processing system50, the clutch1that is an object to be corrected is taken in from a charge conveyor71, for the measurement of runout in a runout measurement section72. After that, the clutch hub1is positioned so as to be oriented to a predetermined direction and transferred to a runout correction section73that corresponds to the deformation processing apparatus for correcting surface runout73. Hereinafter in the correction processing system50, the deformation processing apparatus for correcting surface runout73referred to as “runout correction section73”. Only one runout correction section73may be provided, or, as shown inFIG. 4, two or more runout correction sections73may be provided for alternate use to thereby enhance work efficiency. After that, the clutch hub1is taken out to the subsequent step from a discharge conveyor75via a runout check section74. If the runout check section74determines that a processed product does not satisfy a standard value, the product is ejected, as a defective product, to a defective product discharge section76. Also, a processed product is periodically ejected to a quality check product discharge section77to check quality of products. A delivery member78, which is a robot arm, is used for conveying products between these sections.

FIG. 5is a specific structure diagram (center cross-sectional view) of the clutch hub1.FIG. 6Ashows a front view of an electromagnetic clutch8that includes the clutch hub1.FIG. 6Bshows a right-side partial cross-sectional view of the electromagnetic clutch8. In the right-side cross-sectional view, an upper half from the center shows a cross-sectional structure of the electromagnetic clutch8.

The electromagnetic clutch8has the clutch hub1that transmits power to the compressor such as of an air conditioner of an automobile. The electromagnetic clutch8is integrally connected to a rotary shaft of the compressor via a bolt.

The clutch hub1includes the hub member10which is formed by connecting an outer hub12to an outer periphery of a sheet-metal inner hub11via an elastic member13, such as rubber. Further, the annular armature14is fixed, via rivets15, to a bottom surface of the outer hub12that forms an outer peripheral surface of the hub member10.

The armature14is arranged, via a gap, opposed to a friction surface of a rotor81that configures the electromagnetic clutch8. The armature14is attracted to the rotor81by an electromagnetic force of an electromagnetic coil83which is accommodated in a stator82.

The axial member16of the inner hub11is provided being projected from the center of the plate surface near the armature14. The axial member16is provided in the inside thereof with a spline hole17through which the axial member16is spline-connected to the rotary shaft of the compressor. Thus, the axial member16transmits the torque of the rotor81, which is rotated by the torque of an engine of the automobile, to the rotary shaft. The rotor81is rotatably fixed with a compressor housing via a bearing84.

The clutch hub1has a structure in which the armature14, as a separate member, is fixed, via rivets, to the hub member10composed of the inner hub11and the outer hub12, which are obtained by sheet-metal processing. Therefore, the structure raises a problem of surface runout. The surface runout is caused in the end surface of the armature14(hereinafter referred to as “armature surface141”) that faces the friction surface of the rotor81. For this reason, the surface runout of the armature14with respect to the axis of the inner hub11is required to be measured and corrected after the assemblage of the armature14. A flow of correcting the runout is shown inFIG. 5.

In the deformation processing system50for correcting surface runout shown inFIG. 4, the clutch hub1that has been taken in from the charge conveyor71is transferred to the runout measurement section72by the delivery member78. Thus, runout is measured, at step S1ofFIG. 7, in the runout measurement section72.FIG. 8shows an example of a specific configuration of the runout measurement section72. The runout measurement section72includes a reference pin85which is threadably inserted from below into the spline hole17of the clutch hub1. The runout measurement section72also includes a work presser86that presses the inner hub11from above. The reference pin85is made rotatable about its axis by a work rotating motor87. The work presser86is arranged, sandwiching the inner hub11between itself and the reference pin85, so as to be coaxial with the reference pin85and be vertically movable. Opposed to the lower end surface of the armature14(armature surface141), a runout measuring sensor88and a rivet hole detecting sensor89that detects the position of a rivet hole151are arranged. For example, the runout measuring sensor88and the rivet hole detecting sensor89are laser sensors. The work rotating motor87is a servo motor.

The inner hub11of the clutch hub1has a center portion which is held between the work presser86and the reference pin85. The reference pin85is rotated by the work rotating motor87to allow the runout measuring sensor88to measure a distance to the armature surface141. In this case, if no runout is caused in the armature surface141, the measured distances are uniform. However, as shown inFIG. 9A, if the armature surface141has an inclination with respect to a plane perpendicular to the axial member16of the hub member10, runout will be detected with respect to the rotation angle. The rotation angle is managed by an encoder of the work rotating motor87. The encoder acquires the detection results of the runout measuring sensor88to calculate an amount of runout and determine a rotation angle having a maximum value (seeFIG. 9B). In this case, since the shape around each rivet hole151may be deformed, the positions of the rivet holes151, which are detected by the rivet hole detecting sensor89, are removed from the calculation of runout. The range of removal may be arbitrarily determined. For example, measured values may be stored such as in a sequencer to prepare data relative to angles. Thus, depending on the degree of deformation of the rivet hole151, the range of removal may be increased with respect to the edge of the rivet hole151. In this way, the accuracy of measuring runout can be enhanced.

At step S2ofFIG. 7, the runout measurement section72determines a position so that the value of the encoder (rotation angle), which corresponds to the maximum value of the detected runout, coincides with the angle of the fixing member3in the subsequent runout correction section73. In other words, as shown inFIG. 10on the left, in determining a position, a maximum-runout portion B indicated by the black circle is ensured to be constantly located at a predetermined rotation angle position with respect to the center of the inner hub11. Then, the clutch hub1is stopped at such a position. Instead of the maximum-runout portion B, a minimum-runout portion may be ensured to be located at a predetermined position. Then, at step S3ofFIG. 7, keeping the predetermined rotation angle position, the delivery member78transfers the clutch hub1to the runout correction section73. In this case, as shown inFIG. 10on the right, the maximum-runout portion B, the inner hub11and the fixing member3of the runout correction section3are ensured to be aligned on a line. Thus, the position is optimized for the fixing member3to correct runout of the armature surface141. When the minimum-runout portion is ensured to be located at a predetermined position, the fixing member3is brought to a position opposite to the one shown inFIG. 10.

FIG. 11andFIG. 12show an example of a specific configuration of the deformation processing apparatus for correcting surface runout73. InFIG. 11, the support member2that elastically supports the clutch hub1is fixed onto a base21. Above the clutch hub1, the pressing member4, which is supported by a movable member41of the servo press mechanism5, is coaxially positioned. The movable member41is movable in vertical and horizontal directions by a servo motor51that serves as a driving means. The movable member41determines a position, with respect to the clutch hub1, of the pressing member4mounted to an end thereof, while being able to apply a pressing force to the clutch hub1with a predetermined load. A load cell52is arranged above the pressing member4to enable detection of load. The fact that the pressing member4has been brought into contact with the inner hub11and then has depressed the inner hub11to bring it into contact with the fixing member3, can be confirmed by detecting the change in the load of the load cell52. Thus, an amount of depression of the pressing member4is correctly controllable as shown inFIG. 17AandFIG. 17Bthat will be referred to later.

InFIG. 12AandFIG. 12B, the support member2is configured by fixing a retainer plate22to a plurality of elastic support legs23which are set up on the base21. The clutch hub1is placed on an opening edge portion of an opening25which is provided at the center of the retainer plate22. It is so configured that the axial member16of the clutch hub1is projected downward through the opening25and that a pair of chuck members61of the chuck6are located lateral to the axial member16.

The retainer plate22has a substantially rectangular shape. In the present embodiment, three elastic support legs23are mounted to the retainer plate22, two on the right end and one on the left end as viewed in the figure, to support the retainer plate22at three points. An air cylinder62is fixed to the lower surface of the retainer plate22, being positioned between the two elastic support legs23on the right end, to open/close the chuck members61. Each of the elastic support legs23incorporates a spring member24in its upper end portion to urge the retainer plate22upward. When the pressing member4is pushed down, the upper end portion of each elastic support leg23can be displaced downward by an amount corresponding to the contraction margin of the spring. Thus, the upper end portion of each elastic support leg23is ensured to allow the retainer plate22to descend, while elastically supporting the clutch hub1. The opening25has a substantially rectangular shape, with its right half, as viewed in the figure, facing the chuck members61and the left half facing the fixing member3. The fixing member3, which is fixed onto the base21, has an upper end portion provided with a locating portion31that contacts and supports the inner hub11of the clutch hub1.

FIG. 13is a diagram illustrating a specific configuration of the fixing member3. A bolt hole32for fixation is formed at both ends of the fixing member3in the longitudinal direction. The center portion of the fixing member3is projected upward and has an inclined upper end surface in which the locating portion31having an arc shape is formed. As shown inFIG. 12AandFIG. 12B, the arc-shaped locating portion31is formed in an upper end portion near the chuck members61so as to have a predetermined width and be coaxial with the axial member16of the clutch hub1. The upper end surface of the fixing member3is inclined from the arc-shaped locating portion31toward the opening edge portion of the opening25to form an inclined surface that smoothly inclines downward and outward from the arc. The fixing member3has a side face near the chuck members61, in which an arc-shaped recess that continues from the locating portion31is formed to avoid interference with the clutch hub1.

In this way, by forming the locating portion31into an arc-shaped surface, the load imposed at the time of correcting runout is prevented from being concentrated on a specified portion. The locating portion31is not necessarily required to have an arc or flat surface. Alternative to this, the entire upper surface of the fixing member3may be formed into a gently projected shape.

FIG. 14is a diagram illustrating a specific configuration of the pair of chuck members61. The chuck members61have respective ends provided with claws63which are ensured to hold the axial member16of the clutch hub1from both sides. The pair of claws63have respective inner surfaces64that are opposed to each other via the axial member16. The inner surfaces64are each formed into a gentle concave surface that has a curvature radius larger than the outer diameter of the axial member16. In correcting runout, the claws64hold the axial member16to limit the rotation of the clutch hub1. The chuck members61only have to prevent the clutch hub1from being rotated by the pressing force of the pressing member4and thus to prevent the correcting position from being displaced. For this reason, the chuck members61are permitted to have a comparatively small holding force. Thus, in a state of being supported between the pair of claws63, the axial member16of the clutch hub1can be displaced in the vertical or horizontal direction with the depression and deformation of the inner hub11.

Referring now to the schematic diagrams ofFIGS. 15A and 15BandFIGS. 16A and 16Bhereinafter is described step S4inFIG. 7, a method of correcting runout of the armature surface, performed by the runout correction section73.FIG. 15Aon the left shows a state where the clutch hub1is placed on the support member2of the runout correction section73. In this state, the pressing member4is located above the inner hub11of the clutch hub1so as to be coaxial with the center of the armature surface141and the chuck members61. The clutch hub1is placed so that the armature surface141is in contact with and supported by the retainer plate22and that the axial member16projected downward through the opening25is held by the pair of chuck members61. Specifically, as described above, the clutch hub1is placed so that a portion of the armature surface141, the portion having a maximum amount of runout, faces the fixing member3. Further, in this state, the locating portion31of the fixing member3is not in contact with the inner hub11, and thus the lower surface of the inner hub11facing the opening25is spaced apart from the fixing member3.

From this state, when the servo press mechanism5is driven to descend the pressing member4, an end surface of the cylindrical pressing member4(lower end surface in the figure) firstly comes into contact with the upper surface of the inner hub11of the clutch hub1. Then, as shown inFIG. 15Bon the right, the lower surface of the inner hub11comes into contact with the locating portion31of the fixing member3. The contact portion between the locating portion31and the inner hub11in this case is indicated by the dash-dot-dot line in the surface of the locating portion31shown inFIG. 13. The contact position (position during the descending of the servo press) can be detected by detecting the change in the load of the load cell52shown inFIG. 11. As shown inFIG. 16AandFIG. 16B, the pressing member4is further descended to bring the inner hub11into partial contact with the locating portion31of the fixing member3. With this contact being kept, the pressing member4is further pushed down until an outer peripheral portion of the inner hub11in contact with the pressing member4is depressed by a certain distance.

InFIG. 16Aon the left, the axial member16of the clutch hub1before runout correction (before pressing) is not perpendicular to the horizontal armature surface141(inclination θ1). In this state, the clutch hub1suffers from runout. In this case, the end surface of the cylindrical pressing member4is in contact with an outer peripheral edge portion of the upper surface of the inner hub11, the outer peripheral edge portion being located on an inner peripheral side of the armature14placed on the retainer plate22, which corresponds to an outer peripheral side with reference to the contact position at which the inner hub11contacts the locating portion31.

As shown inFIG. 16Bon the right, when the pressing member4is descended as it is, the outer peripheral portion of the inner hub11is depressed. Accordingly, deformation can be caused in the plate surface of the inner hub11at the contact position, at which the inner hub11contacts the locating portion31. In other words, as shown in the figure, the plate surface of the inner hub11is bent and deformed in the cross section passing through the contact position, and inclined with respect to the horizontal plane. Accordingly, the axial member16is relatively displaced toward the fixing member3. As a result, the angle between the horizontal armature surface141and the axial member16(inclination θ2) is increased.

Accordingly, the inclination θ2is permitted to form substantially a right angle by appropriately setting the amount of depression of the pressing member4according to the amount of runout measured in advance, thereby correcting the runout caused in the armature surface141. However, the amount of deformation of the sheet-metal inner hub11is the sum of the amount of elastic deformation and the amount of plastic deformation. The amount of elastic deformation, which rebounds after removing the load, is not reflected in the amount of correction. For this reason, as the amount of runout becomes larger, the amount of depression is increased. At the same time, the amount of depression of the pressing member4(amount of depression) is determined, taking account of the amount of rebound after deformation. This relationship is shown inFIG. 17Bon the right.

Specifically, as shown inFIG. 17Aon the left, the amount of runout is ranked into several stages. After that, an amount of depression required for permitting the inclination θ2after correction to form a right angle is preset for each rank. Then, based on the measurement performed by the runout measurement section72, the pressing member4is driven so as to achieve the amount of depression corresponding to the rank. The axial member16of the clutch hub1, which is held by the chuck members61, is able to slide between the pair of claws63as the amount of inclination of the axial member16changes in the course of correcting runout. Therefore, the operation of correction will not be prevented.

After that, at steps S5and S6ofFIG. 7, the delivery member78transfers the clutch hub1after correction to the runout check section74to check whether the runout of the armature surface141has become equal to or less than a specified value. The configuration of the runout check section74is similar to that of the runout measurement section72. If the runout is equal to or less than a specified value, control proceeds to step S7where the clutch hub1is conveyed from the discharge conveyor75for the subsequent steps. Then, at step S8, the armature surface141is subjected to finishing grinding using a well-known grinding device.

In the finishing grinding of the armature surface141, the runout that has remained after the correction of runout is removed. In the present embodiment, since the surface runout is substantially completely corrected by the runout correction section73, only a little time and work is required for the finishing grinding. Thus, comparing with the runout correction using the conventional grinding, the processing time is remarkably shortened. Accordingly, productivity is greatly enhanced, and the clutch hub1having high quality can be manufactured.

The deformation processing apparatus for correcting surface runout73according to the present embodiment can be effectively used in the process of manufacturing clutch hubs of not only the air conditioners for automobiles but also various power transmission devices. Further, surface runout of a clutch hub is efficiently corrected by configuring the deformation processing system50for correcting surface runout, which includes the deformation processing apparatus for correcting surface runout73.