JP4635526B2 - Rotor braking surface machining apparatus and machining method, and rotor braking surface machining apparatus control program - Google Patents

Description

  The present invention relates to a rotor braking surface machining apparatus and machining method, and a control program for a rotor braking surface machining apparatus.

  In a conventional rotor, a braking surface is processed with a flange attached (see, for example, Patent Document 1).

In addition, there is a type of processing a braking surface while rotating by using a drive shaft fitting portion for a work drive (see, for example, Patent Document 2 and Patent Document 3).
JP 2000-301401 A JP 2001-259902 A JP 2002-263904 A

  However, in the method disclosed in Patent Document 1, the bearing is assembled after processing. Therefore, the assembly accuracy of the bearing rotation shaft and the machining shaft has a problem of affecting the rotor surface runout.

  In the methods disclosed in Patent Documents 2 and 3, a work having a drive shaft fitting portion, that is, a drive wheel is an object, and there is a problem that the application range is narrow. Also, the equipment is expensive and the management and maintenance costs are high.

  Further, in the methods disclosed in Patent Documents 1 to 3, since the movement of the tool is limited, the machining control is complicated, and the maintenance of accuracy is complicated.

  The present invention has been made to solve the problems associated with the above-described prior art, and has a wide range of application and a rotor braking surface processing apparatus and processing method capable of achieving good surface accuracy, and processing of the rotor braking surface. It is an object to provide a control program for an apparatus.

In order to achieve the above object, the invention described in claim 1
A rotor braking surface machining apparatus in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
Drive means for rotationally driving the assembly;
A tool for machining the rotor braking surface;
Mounting means for supporting the bearing holder at the center of the bearing with respect to the vehicle body mounting surface;
A centering mechanism for matching the bearing center and the drive center ,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
Each of the milling tools is provided with a linear motion unit for moving the milling cutters in the opposite directions with the same amount with respect to the rotor braking surfaces located on both sides, and the milling cutter is provided on one of the linear motion units. Is a rotor braking surface machining apparatus, characterized in that an adjustment unit capable of adjusting the position in the approaching / separating direction is provided .
In order to achieve the above object, the invention described in claim 2
A rotor braking surface machining apparatus in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
Drive means for rotationally driving the assembly;
A tool for machining the rotor braking surface;
Mounting means for supporting the bearing holder at the center of the bearing with respect to the vehicle body mounting surface;
A centering mechanism for matching the bearing center and the drive center,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
Feeding means for causing the milling cutter to approach the rotor braking surface from an oblique direction and separating the rotor braking surface in a direction perpendicular to the rotor braking surface after machining the rotor braking surface is further provided.
The rotor braking surface processing apparatus is characterized by the above.

In order to achieve the above object, the invention according to claim 15 provides:
A method for processing a rotor braking surface in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
A step for supporting the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
Steps for rotationally driving the assembly;
A step for matching the bearing center with the drive center;
Have a, a step for processing the rotor braking surface,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
Each of the milling tools is provided with a linear motion unit for moving the milling cutters in the opposite directions with the same amount with respect to the rotor braking surfaces located on both sides, and the milling cutter is provided on one of the linear motion units. Is equipped with an adjustment unit that can adjust the position in the direction of approaching / separating,
A step of moving the milling cutters in the opposite directions in the opposite directions by the linear motion unit;
And a step of adjusting the position of the milling cutter in the approaching / separating direction by the adjusting unit .
In order to achieve the above object, the invention according to claim 16 provides:
A method for processing a rotor braking surface in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
A step for supporting the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
Steps for rotationally driving the assembly;
A step for matching the bearing center with the drive center;
A step for machining the rotor braking surface,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
A step for causing the milling cutter to approach the rotor braking surface from an oblique direction by a feeding means; and a step for separating the rotor braking surface in a direction perpendicular to the rotor braking surface after the processing of the rotor braking surface by the feeding means. And further comprising steps
This is a method for processing a rotor braking surface.

In order to achieve the above object, the invention according to claim 27 provides
A control program for controlling the rotor braking surface machining apparatus according to claim 1,
A procedure for the mounting means to support the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
A procedure for rotationally driving the assembly;
The centripetal mechanism has a procedure for matching the bearing center and the drive center;
A procedure for machining the rotor braking surface by the tool ;
A procedure for causing the linear motion unit to move the milling cutters in the same amount in the opposite direction and away from each other; and
A procedure for the adjustment unit to adjust the position of the milling cutter in the approaching / separating direction ;
It is a control program for making the said rotor braking surface processing apparatus perform.
In order to achieve the above object, the invention according to claim 28 provides
A control program for controlling the rotor braking surface machining apparatus according to claim 2,
A procedure for the mounting means to support the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
A procedure for rotationally driving the assembly;
The centripetal mechanism has a procedure for matching the bearing center and the drive center;
A procedure for machining the rotor braking surface by the tool;
A procedure for the feeding means to cause the milling cutter to approach the rotor braking surface from an oblique direction;
A procedure for the feeding means to separate the rotor braking surface in a direction perpendicular to the rotor braking surface after processing the rotor braking surface;
It is a control program for making the said rotor braking surface processing apparatus perform.

  The present invention configured as described above has the following effects.

According to the first and second aspects of the invention, since the centering mechanism for aligning the bearing center and the drive center is provided, the shaft center is provided in addition to the drive wheel having the drive shaft fitting portion. It is possible to machine a driven wheel that does not. Since the rotor braking surface is machined in an assembly state in which the rotor and the bearing holder are integrally assembled, the assembly accuracy between the bearing rotation shaft and the machining shaft does not affect the rotor surface runout. The bearing holding body is supported at the center of the bearing relative to the mounting surface of the vehicle body, and the rotor braking surface is machined by aligning the bearing center with the drive center, ensuring parallelism and suppressing backlash due to surface runout. In addition, the surface roughness can be stabilized. That is, it is possible to provide a rotor braking surface processing apparatus that has a wide application range and can achieve good surface accuracy. In particular, according to the first aspect of the present invention, the linear motion unit that moves the milling cutters in the opposite directions with the same amount in the opposite direction, and the adjustment unit that can adjust the position provided in one of the linear motion units. Therefore, by adjusting the position of the adjustment unit according to the height change of the rotor braking surface, both sides of the rotor braking surface can be processed in the same amount in the opposite direction with high accuracy. The setup work is easy, the time can be shortened, and the control of only one of the milling cutters is sufficient, so the control is easy and the change in the thickness width dimension of the assembly can be easily handled. According to the invention described in claim 2, the milling cutter is approached from the oblique direction toward the rotor braking surface, and after the rotor braking surface is processed, Because having a feeding means for vertically spaced, the cutter mark formed is suppressed at the time of loss of the milling cutter, the surface accuracy such as surface deflection and roughness can be stabilized.

According to the fifteenth and sixteenth aspects of the present invention, in processing the rotor braking surface, in order to make the bearing center and the drive center coincide with each other, the shaft center is provided in addition to the drive wheel having the drive shaft fitting portion. It is possible to machine a driven wheel that does not. Since the rotor braking surface is machined in an assembly state in which the rotor and the bearing holder are integrally assembled, the assembly accuracy between the bearing rotation shaft and the machining shaft does not affect the rotor surface runout. The bearing holding body is supported at the center of the bearing relative to the mounting surface of the vehicle body, and the rotor braking surface is machined by aligning the bearing center with the drive center, ensuring parallelism and suppressing backlash due to surface runout. And the surface roughness is stabilized. That is, it is possible to provide a method for processing a rotor braking surface that has a wide application range and can achieve good surface accuracy. Particularly, according to the invention described in claim 15, the step of moving the milling cutter in the opposite direction with the same amount by the linear motion unit and the position adjustment of the milling cutter in the approaching / separating direction by the adjustment unit. Therefore, by adjusting the position of the adjustment unit according to the height change of the rotor braking surface, both sides of the rotor braking surface can be processed simultaneously in the same amount in the opposite direction with high accuracy. The setup work is easy, the time can be shortened, and the control of only one of the milling cutters is sufficient, so the control is easy and it can easily cope with changes in the thickness width dimension of the assembly. According to the invention described in claim 16, the milling cutter is contacted from the oblique direction toward the rotor braking surface by the feeding means. And a step for separating the rotor braking surface in a direction perpendicular to the rotor braking surface by the feeding means after processing of the rotor braking surface, so that formation of cutter traces when the milling cutter comes off is suppressed, Surface accuracy such as surface runout and roughness can be stabilized.

According to the invention described in claim 27 and claim 28 , each part of the rotor braking surface processing device according to claim 1 is controlled by the control program, and when the rotor braking surface is processed, the bearing center, the drive center, Therefore, in addition to the drive wheel having the drive shaft fitting portion, it is possible to process a driven wheel having no shaft center. The assembly accuracy between the bearing rotating shaft and the machining shaft has an effect on the run-out of the rotor surface in order to execute the procedure for machining the rotor braking surface in an assembly in which the rotor and bearing holder are integrated together. Does not reach. Since the bearing holder is supported at the center of the bearing with respect to the mounting surface of the vehicle body, the bearing center and the drive center are aligned, and the respective steps for machining the rotor braking surface are executed. It is possible to suppress the occurrence of rattling due to vibration and stabilize the surface roughness. That is, it is possible to provide a control program for a rotor braking surface machining apparatus that has a wide application range and can achieve good surface accuracy. In particular, according to the invention described in claim 27, the linear motion unit has a procedure for causing the milling cutter to approach and separate in the opposite direction with the same amount, and the adjustment unit includes the milling cutter in the approach and separation direction. Because it has a procedure for adjusting the position, by adjusting the position of the adjustment unit according to the height change of the rotor braking surface, both surfaces of the rotor braking surface can be processed simultaneously in the same amount in the opposite direction with high accuracy. The setup work when changing the work type is easy, the time can be shortened, and control of only one of the milling cutters is sufficient, so control is easy and even for changes in the thickness width dimension of the assembly, Further, according to the invention described in claim 28, the feeding means allows the milling cutter to approach the rotor braking surface from an oblique direction. Order, and after the processing of the rotor braking surface, the feeding means has a procedure for separating the rotor braking surface in a direction perpendicular to the rotor braking surface. Surface accuracy such as roughness can be stabilized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of the processing apparatus according to the first embodiment, FIG. 2 is an enlarged cross-sectional view for explaining a workpiece according to the first embodiment, and FIG. 3 illustrates a milling cutter of the processing apparatus of FIG. FIG. 4 is a side view for explaining a comparative example related to the chip configuration of the milling cutter, and FIGS. 5 (A) and 5 (B) are planes for explaining the difference between the cutter eyes. It is a figure and shows the case of a milling cutter and a cutting tool (lathe).

  A machining apparatus 100 shown in FIG. 1 is a continuous path numerically controlled milling machine, and includes a workpiece support part 110, a milling tool 140, a tool support part 160, a pedestal part 190, and an NC control part (not shown). Have.

  The work support section 110 rotatably supports the upper mount means 112 and the lower mount means 131 for gripping the work 10, the work drive section 111 for rotationally driving the upper mount means 112, and the lower mount means 131. And a support portion 130.

  The workpiece 10 shown in FIG. 2 is an assembly in which, for example, a rotor 10A for driving wheels or driven wheels and a bearing holder 10B having a hub and a bearing cage are integrated. The rotor 10 </ b> A and the bearing holder 10 </ b> B are fastened (fixed) by a nut 13 corresponding to an actual machine. Reference numerals 14 and 15 denote a locating pin and a bearing.

  The upper mounting means 112 has a centering mechanism for aligning the drive center DC and the bearing center BC. The centering mechanism restricts the movement in the rotational direction and supports the hub bolt part for fastening the rotor 10A and the bearing holder 10B so as to be movable in the radial direction. The hub bolt portion includes a bolt and a nut 13 for fastening the rotor 10A and the bearing holder 10B. The work drive unit 111 includes, for example, a variable motor and a speed reducer, and rotationally drives the work 10 at a low speed (for example, 2 rpm).

  The lower mounting means 131 has swing clamps 132 and 133 disposed at opposing positions, and supports the bearing holder 10B at the bearing center BC with reference to the vehicle body mounting surface. The swing clamps 132 and 133 can be released by fixing the flange portion of the bearing cage by rotating the claw 90 degrees and retracting, and by rotating the claw 90 degrees and escaping from the flange portion. It is. That is, the lower mounting means 131 holds the workpiece 10 in a detachable manner. In addition, the lower mounting means 131 is not limited to what applies a swing clamp.

  The work support part 110 has a position changing means (not shown) for changing the arrangement position of the work drive part 111 when the work 10 is attached or detached. The position changing means is, for example, a hydraulic cylinder that moves the work drive unit 111 upward.

  The milling tool 140 has a pair of milling cutters 141 and 145, and can simultaneously machine machining surfaces (rotor braking surfaces) located on both sides of the workpiece 10. Since the workpiece 10 is pressed against each other by the milling cutters 141 and 145, the occurrence of chatter is suppressed.

The milling cutters 141 and 145 have a cutter body 150 and a plurality of tips 151 and 15 2. Since the milling cutters 141 and 145 approach toward the workpiece 10 from an oblique direction, the rear teeth (chips 15 and 2) are set so that the approach angle becomes large.

That is, as shown in the comparative example of FIG. 4, if approach angle behind the teeth (chip 3 5 2) is small, large contact surface with the workpiece 310, since the cutting resistance increases, chattering is likely to occur. Meanwhile, the chip 1 5 2 approach angle of the milling cutter 141 and 145 is larger, the cutting resistance is reduced, generation of chatter is suppressed. Therefore, it is possible to stabilize the surface accuracy such as surface runout and roughness. Incidentally, the cutter body 150, the outer peripheral side of the chip 1 5 2 preferably has a reinforcing structure for supporting the chip 1 5 2.

  The tool support unit 160 includes a drive unit for rotationally driving the milling cutters 141 and 145, a feed unit for moving the milling cutters 141 and 145 via a predetermined tool path, and a column unit to which the feed unit is attached. 169.

  The drive unit of the tool support unit 160 includes a motor 162 as a drive source, a spindle upper portion (first spindle unit) 161 to which a milling cutter 141 is rotatably attached, and a milling cutter 145 to be rotatably attached. Main shaft lower portion (second main shaft portion) 165.

  The main shaft upper portion 161 is connected to the motor 162 and rotationally drives the milling cutter 141. The main shaft lower portion 165 is connected to the main shaft upper portion 161 by a spline shaft (connecting means) 164, and the milling cutter 145 is rotationally driven by the motor 162 at, for example, 2000 rpm. Therefore, the milling cutters 141 and 145 are driven by the motor 162 at a constant phase and the same rotation speed.

  Therefore, the machining apparatus 100 has a rotation synchronization mechanism that can move the axis independently and can synchronize the rotation cycle of the milling cutters 141 and 145. Therefore, for example, it is possible to suppress or adjust the rotor thickness difference (DTV), which is said to be the main cause of judder. Note that the phase of the blades of the milling cutters 141 and 145 can be adjusted by changing the fitting position of the spline shaft 164.

  The feeding means provided in the tool support unit 160 includes slide bases 170, 171, and 172. The slide base 170 has a main shaft upper portion 161 and a motor 162 fixed thereto, and is connected to the slide base 171 via a slide guide 175. A hydraulic cylinder 176, which is a reciprocating drive means, is disposed on the upper portion of the slide base 171, and the slide base 170 can be driven independently in the vertical direction. The milling tool 140 (milling cutters 141 and 145) can be replaced by raising the slide base 170 and pulling the spline shaft 164 apart by the hydraulic cylinder 176.

  The slide base 171 is connected to the rectilinear motion unit 181 and guided by a slide guide 178 attached to the support column 169. The rectilinear motion unit 181 includes a nut system such as a ball screw, for example, and is coupled to a motor 180 disposed on the upper portion of the support column 169. Therefore, the motor 180 can move the slide base 171 to which the main spindle upper portion 161 is fixed up and down along the slide guide 178.

  A stopper 173 such as a bolt 173 a that is screwed into the lower portion is disposed at the lower portion of the slide base 171. The lower limit position of the slide base 170 can be adjusted by adjusting the protruding amount of the stopper 173 according to the screwed state so as to abut against the slide base 170. That is, the stopper 173 is used to adjust the position of the upper spindle 161 fixed to the slide base 170.

  The slide base 172 is connected to the linear motion unit 183 while being guided by a slide guide 178 attached to the column portion 169 while being attached to the lower portion 165 of the main shaft. The rectilinear motion unit 183 is connected to the rectilinear motion unit 181 via a coupling 182, and is set to move the milling cutters 141 and 145 in the opposite directions with the same amount. Therefore, the motor 180 can change the positions of the main shaft upper portion 161 and the main shaft lower portion 165, and the main shaft lower portion 165 and the main shaft upper portion 161 are driven symmetrically.

  The slide bases 170 and 171, the slide guide 175, the hydraulic cylinder 176, and the stopper 173 constitute an adjustment unit 179.

  Here, when the thickness width dimension of the workpiece 10 changes, the position of the lower mount means 131 that supports the lower portion of the workpiece 10 is fixed, so that only the height of the rotor braking surface 11 at the upper portion of the workpiece 10 changes.

  Therefore, by adjusting the position of the upper adjustment unit 179 in accordance with the change in the height of the rotor braking surface, both surfaces of the rotor braking surfaces 11 and 12 can be processed simultaneously in the same amount in the opposite direction, so the work type can be changed. The setup work at the time becomes easy and the time can be shortened.

  The adjustment unit 179 is provided on the upper linear motion unit 181 side that processes the upper rotor braking surface 11, but may be provided on the lower linear motion unit 183 instead. It is necessary to fix the upper position of the workpiece 10.

  The pedestal portion 190 includes a rectilinear motion unit 191 to which the column portion 169 is connected, and a motor 192 for driving the rectilinear motion unit 191. The motor 192 can move the milling tool 140 and the tool support 160 close to and away from the work support 110.

  The NC control unit is used to numerically control each of the units 110, 130, 160, and 190 of the machining apparatus 100, and includes a storage unit, a calculation unit, and an input / output unit.

  The storage unit includes a read-only storage device such as a ROM, a high-speed random access storage device such as a RAM, a large-capacity random access storage device such as a hard disk drive, and the like. Stores NC data and control programs required for machining such as feed rate and tool path.

  The arithmetic unit includes a central processing unit (CPU), and the units 110, 130, and 160 are based on NC data and control programs stored in the storage unit, output signals from the units 110, 130, 160, and 190, and the like. , 190 is generated in order to continuously control.

  The input / output unit transfers an output signal from each unit 110, 130, 160, 190 to the arithmetic unit, and an interface for transferring a control signal generated by the arithmetic unit to each unit 110, 130, 160, 190. Have

  As described above, since processing apparatus 100 according to the first embodiment has a centering mechanism for matching the bearing center and the drive center, in addition to the drive wheel having the drive shaft fitting portion, the shaft center is provided. It is possible to process a driven wheel that does not have. In addition, since the rotor braking surface is processed in an assembly state in which the rotor and the bearing holder are integrated together, the assembly accuracy between the bearing rotation shaft and the processing shaft does not affect the rotor surface runout.

  In addition, the bearing holding body is supported at the center of the bearing relative to the mounting surface of the vehicle body, and the rotor braking surface is machined by aligning the bearing center with the drive center, ensuring parallelism and generating backlash due to surface runout. Can be suppressed and the surface roughness can be stabilized. That is, it is possible to provide a rotor braking surface processing apparatus that has a wide application range and can achieve good surface accuracy.

  In addition, since a milling tool is applied to the processing of the rotor braking surface, it is preferable in that dry processing is possible, unlike the case of turning or grinding. For example, turning generates a large amount of heat and generates large thermal strain, making it difficult to apply dry machining.In addition, the load in the radial direction of the bearing is large, and the workpiece is distorted, maintaining accuracy. However, high-speed machining is difficult. On the other hand, since grinding involves a large amount of dust, it is difficult to apply dry processing, equipment is expensive, and management and maintenance costs are high.

  Furthermore, application of the milling tool is also preferable with respect to the cutter eye (surface property). For example, in the case of a milling cutter of a milling tool, the cutter eyes remaining on the rotor braking surface after processing are radial as shown in FIG. On the other hand, in the case of turning with a cutting tool (lathe), as shown in FIG.

  When pressing the brake pad against the rotor braking surface, the record board-shaped cutter eye pulls the brake pad toward the inner periphery or pushes it toward the outer periphery, and releases the brake pad when reaching the movable limit point of the brake pad To do. Since pulling in and releasing the brake pad causes vibration, it is necessary to remove the record board-like cutter eye by a finishing process such as a roller burnish. Therefore, the application of turning causes an increase in manufacturing cost and equipment cost.

  On the other hand, since the radial cutter eye does not cause the brake pad to be pulled in and released, the rotor braking surface after machining by the milling tool does not require an additional step for finishing. Therefore. Application of a milling tool makes it possible to reduce manufacturing costs and equipment costs.

  Next, the machining operation of the machining apparatus 100 executed by the NC control unit based on the control program will be described. 6A and 6B are a plan view and a side view showing an initial position, and FIGS. 7A and 7B are a plan view and a side view showing a forward position, FIG. FIGS. 9A and 9B are a plan view and a side view showing a retracted position immediately after the end of machining of the rotor braking surface, and FIGS. 9A and 9B are planes showing return to the initial position. It is a figure and a side view.

  First, a workpiece 10 which is an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated is supported by the lower mounting means at the center of the bearing with respect to the mounting surface of the vehicle body. . On the other hand, the upper mounting means 112 provided with the centering mechanism restricts movement in the rotational direction and supports the hub bolt portion of the workpiece 10 so as to be movable in the radial direction.

  Since the rectilinear motion unit 183 is connected to the rectilinear motion unit 181 via the coupling 182 so as to operate in reverse, the movement amounts of the upper spindle 161 and the lower spindle 165 based on the driving of the motor 180 are the same. Accordingly, the milling cutter 141 attached to the spindle upper portion 161 and the milling attached to the spindle lower portion 165 are adjusted by adjusting the position of the stopper 173 and positioning the slide base 170 in accordance with the width dimension of the workpiece 10. The cutter 145 can operate symmetrically with respect to the rotor braking surfaces 11 and 12 of the workpiece 10.

  That is, since control of only one of the milling cutters 141 and 145 is sufficient, control is easy. Further, it is possible to easily cope with a change in the thickness width dimension of the workpiece 10.

  After positioning the slide base 170, the motor 162 is driven to rotate the milling cutters 141 and 145 at, for example, 2000 rpm (V = 1200 m / s). Further, the workpiece 10 is rotated at, for example, 2 rpm according to the cutting conditions by the workpiece drive unit 111 of the workpiece support unit 110.

  By driving the motor 192 of the pedestal 190, the rectilinear motion unit 191 gradually moves the support column 169 of the tool support 160 toward the work support 110. At the same time, by driving the motor 180, the milling cutters 141 and 145 gradually approach each other. That is, the milling cutters 141 and 145 are approached from the oblique direction toward the rotor braking surfaces 11 and 12 by the feeding means.

  Accordingly, the milling cutters 141 and 145 are fed from the initial position shown in FIG. 6 to the forward movement position shown in FIG. 7 while being rotationally driven. Then, milling cutters 141 and 145 mill the rotor braking surfaces 11 and 12 of the workpiece 10 supported by the upper mounting means and the lower mounting means.

  At this time, since the bearing center and the drive center coincide with each other, it is possible to process a driven wheel having no shaft center as the work 10 in addition to the drive wheel having the drive shaft fitting portion. Since the workpiece 10 is composed of an assembly in which the rotor and the bearing holder are integrally incorporated, the assembly accuracy of the bearing rotation shaft and the machining shaft does not affect the rotor surface runout. The bearing holder is supported at the center of the bearing relative to the mounting surface of the body, and the milling is performed by aligning the bearing center with the drive center, ensuring parallelism and suppressing backlash due to surface runout. And stabilize the surface roughness.

  Further, the biting that occurs when the milling cutters 141 and 145 contact the rotor braking surfaces 11 and 12 of the workpiece 10 is removed by subsequent milling. Therefore, it is possible to stabilize surface accuracy such as surface runout and roughness.

  Furthermore, since the workpiece 10 is pressed from both sides by the milling cutters 141 and 145, the occurrence of chatter is suppressed. Furthermore, since both surfaces (rotor braking surfaces 11 and 12) of the workpiece 10 are processed at the same time, the pressing force is balanced and equalized, so that excessive cutting traces are suppressed.

  The milling of the rotor braking surfaces 11 and 12 is continued, for example, while the workpiece 10 is rotated twice. After the completion of machining, the motor 180 is driven to move the milling cutters 141 and 145 to the retracted position while being spaced apart from the rotor braking surfaces 11 and 12 of the workpiece 10 in the vertical direction as shown in FIG. That is, the milling cutters 141 and 145 are moved from the rotor braking surfaces 11 and 12 via a predetermined tool path by the feeding means. As a result, the formation of cutter traces when the milling cutters 141 and 145 are removed can be suppressed, and surface accuracy such as surface runout and roughness can be stabilized.

Then, the rotation of the milling cutters 141 and 145 by the motor 162 and the rotation of the work 10 by the work drive unit 111 are stopped. On the other hand, by driving the motor 192 of the pedestal 190, the column 169 of the tool support 160 is moved away from the work support 110, and the milling cutters 141 and 145 are initially moved as shown in FIG. Return to position.

  As described above, in the first embodiment, it is possible to provide a method for processing a rotor braking surface that has a wide application range and can achieve good surface accuracy. Moreover, each operation | movement (procedure) for processing a rotor braking surface is performed by controlling each part of the processing apparatus 100 with a control program. That is, it is possible to provide a control program for a rotor braking surface machining apparatus that has a wide application range and can achieve good surface accuracy.

  Next, a centering mechanism for matching the drive center with the bearing center will be described. FIG. 10 is an exploded view for explaining the upper mounting means provided with the centering mechanism, FIG. 11 is a bottom view for explaining the Y-axis adjusting unit in the centering mechanism, and FIG. 12 is the Y-axis adjusting unit. It is sectional drawing for demonstrating.

  The upper mounting means 112 includes a first unit 113 coupled to the work drive unit 111 and a second unit 120 for gripping the workpiece 10, and the centering mechanism includes the first unit 113 and the second unit 120. It is comprised by combining.

  The first unit 113 includes a pair of L-shaped hook members 114 protruding toward the second unit 120. The hook members 114 are disposed in the center of the first unit 113 so as to face each other. A bearing 115 urged by a spring 116 is disposed at the front end portion of the hook member 114 that faces the hook member 114. The bearing 115 is disposed along the X-axis direction and slightly protrudes from the tip portion.

  The second unit 120 includes a deformed member 117 having a T-shaped cross section that protrudes toward the first unit 113. The arrangement position of the deformed member 117 corresponds to the arrangement position of the hook member 114. The deformed member 117 has a stepped portion 118 for allowing insertion from the side in a gap formed between the hook members 114. Both side surfaces of the stepped portion 118 are in contact with and supported by the bearings 115 arranged along the X-axis direction, so that movement in the X-axis direction is restricted, but in the Y-axis direction (the operation direction of the bearing 115). Movement is free.

  That is, the hook member 114 and the deformed member 117 support the second unit 120 so as to be movable with respect to the Y axis, and can absorb the deviation in the Y axis direction with respect to the drive center DC and the bearing center BC. The adjustment unit is configured.

  FIG. 13 is a plan view for explaining the X-axis adjusting unit in the centering mechanism, FIG. 14 is a cross-sectional view for explaining the first lock member of the X-axis adjusting unit, and FIG. Sectional drawing for demonstrating a 2nd locking member, FIG. 16 is a top view for demonstrating the operation | movement for supporting a 4 hole workpiece | work.

  A rectangular first lock member 121 and a second lock member 122 are arranged on the side of the second unit 120 facing the workpiece 10. The first lock member 121 and the second lock member 122 are each a pair, and the groove portions 123 are formed to face each other.

  In the groove portion 123, a plate 124, a bearing 125 that movably supports the plate 124, a spring 126 for adjusting the movement of the plate 124, and a holding plate 128 for preventing the plate 124 from falling off are disposed. The The second lock member 122 includes a triangular member 127. In addition, the operation direction of the bearing 125 (X-axis direction) and the operation direction of the bearing 115 (Y-axis direction) disposed on the hook member 114 of the first unit 113 intersect at a right angle.

  The workpiece 10 has four holes and has hub bolt portions 14A to 14D. Since the hub bolt portions 14A to 14D are arranged at intervals of 90 degrees with respect to the center of the workpiece 10, the line connecting the hub bolt portion 14A and the hub bolt portion 14C and the line connecting the hub bolt portion 14B and the hub bolt portion 14D are Cross at a right angle at the center of

  A chuck 129 for driving the first lock member 121 and the second lock member 122 is disposed on the side of the second unit 120 facing the first unit 113. The chuck 129 uses, for example, a pneumatic cylinder as a driving source, and a tube for supplying air is connected to an external high-pressure air source using an appropriate coupling mechanism. The drive source of the chuck 129 is not limited to air pressure, and for example, hydraulic pressure or a spring can be used.

  The plate 124 of the first lock member 121 is driven by the chuck 129 so that the first lock members 121 are close to each other, so that, for example, the plate 124 comes into contact with and grips both side surfaces of the hub bolt portion 14A in the four-hole workpiece 10. Is possible. Similarly, the plate 124 of the second lock member 122 is brought into contact with and grips the both side surfaces of the hub bolt portion 14C in the four-hole workpiece 10 by driving the chuck 129 so that the second lock member 122 is close to each other. It is possible (see FIG. 16).

  Therefore, since the plate 124 is movably supported by the bearing 125, the workpiece 10 is restricted from moving in the circumferential direction but can move in the radial direction (X-axis). That is, the first lock member 121, the second lock member 122, and the chuck 129 support the workpiece 10 so as to be movable in the X-axis direction (operation direction of the bearing 125), and the X-axis related to the drive center DC and the bearing center BC. An X-axis adjusting unit that can absorb the deviation in direction is configured.

  Note that the biasing force of the spring 126 is preferably increased as appropriate within a range that does not affect the accuracy in order to suppress the occurrence of backlash.

  As described above, the centripetal mechanism is configured by combining the Y-axis adjustment unit for absorbing the deviation in the Y-axis direction and the X-axis adjustment unit for absorbing the deviation in the X-axis direction, It is possible to make the drive center DC and the bearing center BC coincide.

  FIG. 17 is a plan view for explaining an operation for supporting a 5-hole workpiece.

  In the 5-hole work, unlike the 4-hole work, the work is supported using three (24A, 24C, 24D) of the hub bolt parts 24A to 24E. The hub bolt part 24A is located on a perpendicular extending from the center of the line connecting the hub bolt part 24C and the hub bolt part 24D.

  The plate 124 of the first locking member 121 is brought into contact with and grips both side surfaces of the hub bolt portion 24A by being driven by the chuck 129 so that the first locking members 121 are close to each other. On the other hand, the second lock member 122 is driven by the chuck 129 so that the second lock members 122 are separated from each other, so that the inclined surfaces of the triangular members 127 of the second lock member 122 are aligned with the side surfaces of the hub bolt portions 24C and 24D. Contact.

Therefore, the 5-hole workpiece is restricted from moving in the circumferential direction, but can move in the radial direction (X-axis). That is, the X-axis adjustment unit according to Embodiment 1 can be applied to both 4-hole workpieces and 5-hole workpieces. The second locking member 122 is not limited to a structure that can be used for both a 4-hole work and a 5-hole work. For example, when the 4-lock work is dedicated, the triangular member 127 can be omitted. It is.

  As described above, the first embodiment can provide a rotor braking surface processing apparatus and processing method and a rotor braking surface processing apparatus control program that have a wide range of application and can achieve good surface accuracy. .

  FIG. 18 is a side view for explaining the rotation synchronization mechanism of the milling cutter according to the second embodiment.

  The rotation synchronization mechanism 240 included in the processing apparatus according to the second embodiment includes a transmission unit 242 and 246 for adjusting the phase and rotation speed of the milling cutters 141 and 145, and a drive for driving the milling cutters 141 and 145 to rotate. Means 260 and drive means 280, 281 for moving the milling cutters 141, 145. The driving means 260 is, for example, an induction motor. The driving means 280 and 281 are, for example, servo motors.

  The transmission unit 242 includes a gear 243 fixed to the shaft of the milling cutter 141, a gear 245 fixed to the shaft 261 of the driving unit 260, and a gear for adjusting the rotational speed by connecting the gear 243 and the gear 245. 244. The transmission unit 246 includes a gear 247 fixed to the shaft of the milling cutter 145, a gear 249 fixed to the shaft 261 of the driving unit 260, and a gear for adjusting the rotational speed by connecting the gear 247 and the gear 249. 248. The gears 243 to 245 and 247 to 249 are held by bearings.

  The driving means 280 is used to move (lower) the milling cutter 141 and the transmission unit 242 with respect to the rotor braking surface 11 of the workpiece 10. The driving means 281 is used for moving (raising) the milling cutter 145 and the transmission unit 246 with respect to the rotor braking surface 12 of the workpiece 10. The driving means 280 and 281 are electrically synchronously controlled (two-axis simultaneous control).

  As described above, also in the second embodiment, it is possible to drive the milling cutters 141 and 145 at a constant phase and the same rotation speed. In addition, it is also possible to drive directly without using a gear if necessary.

  FIG. 19 is a side view for explaining the rotation synchronization mechanism of the milling cutter according to the third embodiment.

  The rotation synchronization mechanism 340 included in the processing apparatus according to the third embodiment includes a transmission unit 342 and 346 for adjusting the phase and the rotational speed of the milling cutters 141 and 145, and a drive for driving the milling cutters 141 and 145 to rotate. Means 360, 362 and driving means 380, 381 for moving the milling cutters 141, 145 are provided. The driving means 360, 362, 380, 381 are, for example, servo motors and are electrically synchronously controlled.

  The transmission unit 342 includes a gear 343 fixed to the shaft of the milling cutter 141, a gear 345 fixed to the shaft 361 of the driving unit 360, and a gear for adjusting the rotational speed by connecting the gear 343 and the gear 345. 344. The transmission unit 346 includes a gear 347 fixed to the shaft of the milling cutter 145, a gear 349 fixed to the shaft 363 of the driving unit 362, and a gear for adjusting the rotational speed by connecting the gear 347 and the gear 349. 348. The gears 343 to 345 and 347 to 349 are held by bearings.

The driving means 380 is used for moving (lowering) the milling cutter 141 and the transmission unit 342 with respect to the rotor braking surface 11 of the workpiece 10. The driving unit 381 is used to move (raise) the milling cutter 145 and the transmission unit 346 relative to the rotor braking surface 12 of the workpiece 10.

  As described above, also in the third embodiment, the milling cutters 141 and 145 can be driven at a constant phase and at the same rotation speed. Further, since the driving means 360 and 362 are provided for each of the transmission units 342 and 346, vibration can be suppressed as compared with the rotation synchronization mechanism 240 of the milling cutter shown in FIG.

  FIG. 20 is a plan view for explaining the X-axis adjustment unit according to the fourth embodiment.

  The X-axis adjustment unit included in the machining apparatus according to Embodiment 4 includes a rectangular first lock member 421 and a second lock member 422 that are disposed on the side of the second unit 420 facing the workpiece 10. The first lock member 421 has a groove 423 formed on the side surface (inner surface) facing each other, and the second lock member 422 has a groove 423 formed on both side surfaces (inner surface and outer surface). In the groove portion 423, a plate 424, a bearing 425 that supports the plate 424 movably, a spring 426 for adjusting the movement of the plate 424, and a holding plate 428 for preventing the plate 424 from falling off are disposed. ing.

  A chuck 429 for driving the first lock member 421 and the second lock member 422 is disposed on the side of the second unit 420 facing the first unit.

  When the workpiece 10 has four holes, the plate 424 on the inner surface of the second lock member 421 is driven by the chuck 429 so that the first lock members 421 are close to each other, thereby coming into contact with both side surfaces of the hub bolt portion 14A. It is possible to grip. Similarly, the plate 424 on the inner surface of the second lock member 422 can be held in contact with both side surfaces of the hub bolt portion 14C by being driven by the chuck 429 so that the second lock members 422 are close to each other. It is. Therefore, the X-axis adjusting unit according to the fourth embodiment can absorb the deviation in the X-axis direction with respect to the drive center DC and the bearing center BC in the 4-hole workpiece.

  In the case of a 5-hole workpiece, the plate 424 on the inner side surface of the first lock member 421 is driven by the chuck 429 so that the first lock members 421 come close to each other, thereby contacting and gripping both side surfaces of the hub bolt portion 24A. . On the other hand, the plate 424 on the outer surface of the second lock member 422 contacts the side surfaces of the hub bolt portions 24C and 24D by being driven by the chuck 429 so that the second lock member 422 is separated from each other. Therefore, the X-axis adjusting unit according to the fourth embodiment can absorb the deviation in the X-axis direction with respect to the drive center DC and the bearing center BC in the 5-hole workpiece.

  As described above, the X-axis adjustment unit according to the fourth embodiment can be used as a 4-hole or 5-hole workpiece, similarly to the X-axis adjustment unit according to the first embodiment.

  FIG. 21 is a side view for explaining the chatter removing mechanism according to the fifth embodiment.

  In the processing apparatus 100 according to the first embodiment, since both surfaces of the workpiece 10 are pressed by the milling cutters 141 and 145, occurrence of chatter is suppressed. However, it is preferable to further have a mechanism for eliminating the occurrence of chatter.

  The chatter removing mechanism 510 included in the processing apparatus according to the fifth embodiment includes a vibration detecting unit 511, a pressing unit 512, and a control unit 515.

  The vibration detection means 511 is used to detect vibration (movement amount) of the workpiece 10 during machining by the milling cutters 141 and 145. The vibration detection unit 511 includes, for example, a contact type vibration sensor using a piezoelectric element or a laser Doppler type non-contact vibration sensor.

  The pressing means 512 is composed of a pair of upper and lower sides for pressing the rotor braking surfaces on both sides, a pressing force generating means 513 for generating a pressing force, and a spherical shape that is rotatably arranged at the tip of the pressing force generating means 513. And a rotating body 514. The rotating body 514 is disposed on the outer periphery of the rotor braking surfaces 11 and 12. The pressing force generation means 513 suppresses vibration that is a source of chatter by bringing the rotating body 514 into contact with and pressing the rotor braking surface.

  Since the pressing force generated by the pressing force generating means 513 is transmitted via the rotating body 514, the pressing means 512 does not exert a load in the radial direction of the workpiece 10. The pressing force generation means 513 includes hydraulic / pneumatic reciprocating drive means such as a hydraulic cylinder or a pneumatic cylinder, for example.

  The control unit 515 adjusts the pressing force generating unit 513 according to the vibration (movement amount) of the workpiece 10 detected by the vibration detecting unit 511 and controls the pressing force exerted by the rotating body 514. For example, when the pressing force generation means 513 has a hydraulic cylinder, the hydraulic pressure (pressure of the working fluid) is adjusted.

  As described above, the chatter removing mechanism 510 according to the fifth embodiment uniformly presses the rotor braking surfaces on both sides of the workpiece 10 with the minimum necessary force and does not exert a load in the axial direction of the workpiece 10. Therefore, it is possible to eliminate chatter and further stabilize the surface accuracy such as surface runout and roughness. In addition, it is also possible to improve the chatter removal effect by arranging a plurality of pressing means 512 along the circumferential direction of the rotor braking surface.

  22 is a side view of an essential part of the processing apparatus according to the sixth embodiment, FIG. 23 is a side view for explaining an inclination angle adjusting mechanism according to the upper part of the spindle of the processing apparatus of FIG. 22, and FIG. 25 is a plan view of the tilt angle adjusting mechanism, FIG. 25 is a side view for explaining the tilt angle adjusting mechanism according to the lower part of the main shaft of the processing apparatus of FIG. 22, and FIG. 26 is a plan view of the tilt angle adjusting mechanism of FIG. FIG. 27 is a plan view for explaining the adjusting means according to the tilt angle adjusting mechanism of FIGS. 23 and 25.

  The machining apparatus according to the sixth embodiment includes tilt angle adjustment mechanisms 610 and 660 for finely adjusting the tilt angles of the spindle upper portion 161 (first spindle portion) and the spindle lower portion 165 (second spindle portion) three-dimensionally. In general, it differs from the processing apparatus 100 according to the first embodiment. In addition, about the member which has the function similar to Embodiment 1, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

  The tilt angle adjusting mechanism 610 includes a slide base 615, a coupling base 620, a support plate 625, and a mount plate 630 to which the main shaft upper portion 161 is fixed. The slide base 615 is different from the slide base 170 according to the first embodiment in that it includes support pins 635 and an adjustment jig 640. The support pin 635 is disposed at the lower center end 616. The adjustment jig 640 is disposed on both sides of the upper side end 617.

  The slide base 615 is connected to the slide base 171 via a slide guide 175 to which a motor 162 is fixed in the same manner as the slide base 170.

The adjustment jig 640 includes a base 641 fixed to the slide base 615, a drive member 642 for pressing the upper side surface portions 624A and 624B of the connection base 620, and the drive member 64.
2 locking means 644 (see FIG. 27).

  The drive member 642 is made of a bolt and has a shaft portion that passes through the base 641 and a tip end portion 643 that is fixed to the upper side surface portions 624A and 624B of the connection base 620. The lock means 644 is formed of a lock nut through which the drive member 642 passes, and is disposed on both sides of the base 641 and the upper side surface portions 624A and 624B of the connection base 620. The drive member 642 is configured to be able to move the upper side surface portions 624A and 624B of the connection base 620 by being driven to rotate.

  The connection base 620 includes a lower center end 621 in which an opening 622 into which the support pin 635 is fitted is disposed, and four corners in which bolt holes 623A and 623B for connection to the slide base 615 are formed. Have. The bolt holes 623A and 623B have, for example, an oval shape or an enlarged diameter shape, and the inserted bolt is movable. The connection base 620 has an opening 622 (support pin 635) that functions as a rotation reference. Can be turned around.

  On the other hand, the upper side surface portions 624A and 624B are connected to the driving member distal end portion 643 of the adjustment jig 640. Therefore, when the drive member 642 of one adjustment jig 640 is moved forward and the drive member 642 of the other adjustment jig 640 is moved backward, the connection base 620 corresponds to the movement of the drive member 642 and the opening 622 ( It pivots about the support pin 635).

  That is, by adjusting the drive member 642 of the adjustment jig 640, the inclination angle of the connection base 620 with respect to the slide base 615 can be changed. The upper bolt hole 623A has a longer distance from the opening 622 (support pin 635), which is the pivot center, than the lower bolt hole 623B. Therefore, the size of the upper bolt hole 623A is appropriately set larger than the size of the lower bolt hole 623B. The adjustment jig 640 has a function of preventing deviation during processing.

  The support plate 625 is fixed in a direction perpendicular to the connection base 620 and includes a support pin 636 and an adjustment jig 645. The support pin 636 is disposed at the lower center end 626. The adjustment jig 645 is disposed on both sides of the upper side end 627.

  The adjustment jig 645 has the same structure as the adjustment jig 640, a base fixed to the support plate 625, a drive member for moving the upper side surface portions 634A and 634B of the mount plate 630, and a lock of the drive member Means.

  The mount plate 630 includes a lower center end 631 in which an opening 632 into which the support pin 636 is fitted is disposed, and four corners in which bolt holes 633A and 633B for connecting to the support plate 625 are formed. Have. The bolt holes 633A and 633B have, for example, an oval shape or an enlarged diameter shape, and the inserted bolt is movable, and the mount plate 630 has an opening 632 (support pin 636) that functions as a rotation reference. Can be turned around.

  On the other hand, the upper side surface portions 634A and 634B are connected to the driving member front end portion of the adjustment jig 645. Therefore, the inclination angle of the mount plate 630 with respect to the support plate 625 can be changed by adjusting the drive member of the adjustment jig 645. The upper bolt hole 633A has a longer distance from the opening 632 (support pin 636), which is the pivot center, than the lower bolt hole 633B. Therefore, the size of the upper bolt hole 633A is appropriately set larger than the size of the lower bolt hole 633B.

As described above, the mount plate 630 to which the main spindle upper portion 161 is fixed can change the inclination angle with respect to the support plate 625, and the connection base 620 to which the support plate 625 is fixed in the perpendicular direction is inclined with respect to the slide base 615. The corner can be changed. Therefore, the tilt angle adjusting mechanism 610 can finely adjust the tilt angle of the main shaft upper portion 161 three-dimensionally.

  The tilt angle adjustment mechanism 660 includes a slide base 665, a connection base 670, a support plate 675, and a mount plate 680 to which the main shaft lower portion 165 is fixed. The slide base 665 is different from the slide base 172 according to the first embodiment in that it has support pins 685 and an adjustment jig 690. The support pin 685 is disposed at the upper center end 666. The adjustment jig 690 is disposed on both sides of the lower side end 667.

  Note that the slide base 665 is connected to the linear motion unit 183 and guided to a slide guide 178 attached to the column portion 169 (see FIG. 1), similarly to the slide base 172.

  The adjustment jig 690 has the same structure as the adjustment jig 640, a base fixed to the slide base 665, a drive member for moving the lower side surface portions 674A and 674B of the connection base 670, and a lock of the drive member Means.

  The connection base 670 includes an upper center end 671 in which an opening 672 into which the support pin 685 is fitted is disposed, and four corners in which bolt holes 673A and 673B for connection to the slide base 665 are formed. Have. The bolt holes 673A and 673B have, for example, an oval shape or an enlarged diameter shape, and the inserted bolt is movable. The connection base 670 has an opening 672 (support pin 685) that functions as a rotation reference. Can be turned around.

  On the other hand, the lower side surface portions 674A and 674B are connected to the driving member front end portion of the adjustment jig 690. Therefore, the inclination angle of the connection base 670 with respect to the slide base 665 can be changed by adjusting the drive member of the adjustment jig 690. The upper bolt hole 673A has a shorter distance from the opening 672 (support pin 685) that is the pivot center than the lower bolt hole 673B. Therefore, the size of the upper bolt hole 673A is appropriately set smaller than the size of the lower bolt hole 673B.

  The support plate 675 is fixed in a direction perpendicular to the connection base 670, and has support pins 686 and an adjustment jig 695. The support pin 686 is disposed at the upper center end 676. The adjustment jig 695 is disposed on both sides of the lower side end portion 677.

  The adjustment jig 695 has the same structure as the adjustment jig 640, a base fixed to the support plate 675, a drive member for moving the lower side surface portions 684A and 684B of the mount plate 680, and a lock of the drive member Means.

  The mount plate 680 includes an upper center end 681 in which an opening 682 into which the support pin 686 is fitted is disposed, and four corners in which bolt holes 683A and 683B for connecting to the support plate 675 are formed. Have. The bolt holes 683A and 683B have, for example, an oval shape or an enlarged diameter shape, and the inserted bolt is movable, and the mount plate 680 has an opening 682 (support pin 686) that functions as a rotation reference. Can be turned around.

On the other hand, the lower side surface portions 684A and 684B are connected to the driving member front end portion of the adjustment jig 695. Therefore, the inclination angle of the mount plate 680 with respect to the support plate 675 can be changed by adjusting the drive member of the adjustment jig 695. Upper bolt hole 68
3A has a shorter distance from the opening 682 (support pin 686), which is the pivot center, compared to the lower bolt hole 683B. Therefore, the size of the upper bolt hole 683A is appropriately set smaller than the size of the lower bolt hole 683B.

  As described above, the mount plate 680 to which the main spindle lower portion 165 is fixed can change the inclination angle with respect to the support plate 675, and the connection base 670 to which the support plate 675 is fixed in the perpendicular direction is inclined with respect to the slide base 665. The corner can be changed. Therefore, the tilt angle adjusting mechanism 660 can finely adjust the tilt angle of the main spindle lower portion 165 three-dimensionally.

  As described above, the sixth embodiment includes the tilt angle adjusting mechanisms 610 and 660 for finely adjusting the tilt angles of the main shaft upper portion 161 and the main shaft lower portion 165 in a three-dimensional manner. Therefore, when the bearing shaft of the workpiece 10 has a slight inclination due to variations due to manufacturing errors, the inclination angles of the main spindle upper portion 161 and the main spindle lower portion 165 can be finely adjusted appropriately in accordance with the inclination.

  Therefore, by setting the processing direction to a certain direction, it is possible to suppress the occurrence of iris patterns and one-eye patterns, stabilize the surface roughness, and improve the accuracy of the thickness difference in the circumferential direction. Furthermore, it is possible to minimize the deterioration of the flatness of the rotor braking surface.

  FIG. 28 is a cross-sectional view for explaining the main shaft lower portion and the connecting means for connecting the main shaft lower portion according to the seventh embodiment, FIG. 29 is a cross-sectional view taken along line XXIX-line XXIX in FIG. 28 is a cross-sectional view taken along line XXX-XXX in FIG. 28, and FIG. 31 is a cross-sectional view taken along line XXXI--XXXI in FIG.

  The machining apparatus according to the seventh embodiment is generally different from the machining apparatus according to the sixth embodiment in that the connecting means for connecting the main spindle upper portion 161 and the main spindle lower portion 165 has a universal joint mechanism 720.

  The universal joint mechanism 720 extends from the main shaft upper portion 161 and the elastic body 730 for absorbing the tilt of the main shaft upper portion 161 and the main shaft lower portion 165 set by the tilt angle adjusting mechanisms 610 and 660, and the milling cutter 141 is rotatable. And an upper tip 740 that is attached to the lower shaft 165 and a lower tip 750 that extends from the lower portion 165 of the spindle and is rotatably attached to the milling cutter 145.

  The upper tip 740 has projecting portions 741 and 746 that are disposed to face each other. The protrusions 741 and 746 have a fan-shaped cross section, and the outer peripheral portion extends continuously from the outer periphery on the proximal end side of the upper distal end portion 740. The lower end portion 750 has projecting portions 751 and 756 that are disposed to face each other. The projecting portions 751 and 756 have a sector cross section, and the outer peripheral portion continuously extends from the outer periphery on the proximal end side of the lower distal end portion 750.

  The upper tip portion 740 and the lower tip portion 750 are connected by fitting the projecting portions 741, 746, 751, and 756 to constitute a universal shaft joint. The protrusions 741 and 746 of the upper tip 740 and the protrusions 751 and 756 of the lower tip 750 are formed in a tapered shape toward the respective base ends (see FIGS. 29 to 31). In this case, since the fitting becomes stronger, for example, it is possible to reliably prevent the fitting state from being canceled by the rotation of the main spindle upper portion 161 and the main spindle lower portion 165.

The elastic body 730 is, for example, pressure-resistant rubber, and is disposed in the gap between the fitting surfaces of the protrusions 741, 746, 751, and 756. The arrangement method of the elastic body 730 is not particularly limited. For example, with the main spindle upper portion 161 and the main spindle lower portion 165 positioned, the elastic body 730 is injected into the gap between the fitting surfaces of the projecting portions 741, 746, 751, and 756 of the upper tip portion 740 and the lower tip portion 750. Is possible. In this case, good axial accuracy can be ensured.

  As described above, in the seventh embodiment, the connecting means for connecting the main spindle upper portion 161 and the main spindle lower portion 165 has the universal joint mechanism 720, and absorbs the inclination angles of the main spindle upper portion 161 and the main spindle lower portion 165. It is possible to operate smoothly.

  Therefore, when combined with the tilt angle adjusting mechanisms 610 and 660 according to the sixth embodiment, the driving means for the main spindle upper portion 161 and the main spindle lower portion 165 are made common, and can be driven by, for example, a single-axis rotary motor. Therefore, compared with the case where the main spindle upper portion 161 and the main spindle lower portion 165 are completely independent, it is possible to reduce the size of the equipment, reduce the price, and improve the maintainability. The universal joint mechanism 720 is not limited to a form using the elastic body 730, and for example, a fluid can be applied.

  32 is a side view for explaining the chatter removing mechanism according to the eighth embodiment, and FIG. 33 is a perspective view for explaining the pressing means shown in FIG. In addition, about the member which has the function similar to Embodiment 1, the same code | symbol is used and in order to avoid duplication, the description is abbreviate | omitted.

  The chatter removing mechanism 810 according to the eighth embodiment includes a plurality of pressing means 820, a common frame 840, and a column portion 850. Each of the pressing means 820 includes a pair of upper and lower sides for pressing the rotor braking surfaces 11 and 12, a pressing force generation unit 830 for generating pressure, and an annular rotating body 838 that contacts the rotor braking surfaces 11 and 12. And have.

  The pressing force generation means 830 is configured to guide the reciprocating motion of the base 831 fixed to the common frame 840, the rod 832 protruding from the base 831, the moving part 833 fixed to the tip of the rod 832, and the moving part 833. A guide rod 834 is included. The base 831 is provided with hydraulic / pneumatic reciprocating drive means for allowing the rod 832 to reciprocate. One end of the guide rod 834 is fixed to the moving portion 833, and the other end of the guide rod 834 is slidably disposed in a through hole 835 formed in the base portion 831.

  The center of the rotating body 838 is pivotally supported by a pin 836 disposed on the moving unit 833 and is rotatable. The rotating body 838 is oriented in the circumferential direction of the rotor braking surfaces 11 and 12. That is, the rotating body 838 is rotatably disposed at the tip of the pressing force generating means 830, and the pressing force generated by the pressing force generating means 830 is transmitted via the rotating body 838.

  Therefore, vibration that is a source of chatter can be suppressed by abutting and pressing the rotating body 838 against the rotor braking surfaces 11 and 12, and the pressing means 820 is a load in the radial direction of the workpiece 10. Does not affect. The material of the rotating body 838 is not particularly limited as long as it has an appropriate hardness that does not damage the rotor braking surfaces 11 and 12 and can exhibit sufficient wear resistance.

  Further, the pressing means 820 is connected to the support column 850 via the common frame 840. The column portion 850 is disposed at an end located on the opposite side of the end where the tool support portion 160 is disposed, and is adjacent to the support portion 130 for rotatably supporting the lower mount means 131.

  FIG. 34 is a plan view for explaining the arrangement of the pressing means.

In the eighth embodiment, four sets (820A to 820D) of pressing means 820 are provided. Angle theta ₁ which is defined by the circumferential length between the pressing means 820A and the pressing means 820B is 120 degrees. Angle theta ₂ which is defined by the circumferential length between the pressing means 820B and the pressing means 820C is 90 degrees. Angle theta ₃ defined by the circumferential length between the pressing means 820C and the pressing means 820D is 35 degrees. The angle θ ₄ defined by the circumference between the pressing means 820D and the pressing means 820A is 115 degrees.

The angles θ _{1 to} θ ₄ are values that are not n times or 1 / n of each other, and the pressing means 820A to 820D are arranged at uneven positions along the circumferential direction of the rotor braking surfaces 11 and 12. Yes. Therefore, the pressing means 820 has an increased frequency of vibrations that can be dealt with compared to the pressing means 512 provided in the chatter removing mechanism according to the fifth embodiment, and the suppression force is improved.

  The uneven distribution position is not limited to the above example, and can be set as appropriate in consideration of the approach route of the milling tool 140 and the like. It is also preferable to set the number of sets of pressing means and uneven positions in consideration of the frequency distribution and cost included in the vibration.

  FIG. 35 is a conceptual diagram for explaining the control of the pressing means of FIG.

  The working fluid supply device 860 for driving the hydraulic / pneumatic reciprocating drive means disposed in the pressing force generation means 830 of the pressing means 820 passes through a piping system in which the pressure adjusting valves 862 and 867 are disposed, It is connected to the base 831 of the pressing force generating means 830.

  The pressure adjustment valve 862 is disposed in a pipe between the working fluid outlet 861 of the supply device 860 and the working fluid inlet 863 of the base 831, and adjusts the pressure of the supplied working fluid to control the pressing force of the pressing unit 820. Is possible. On the other hand, the pressure adjustment valve 867 is disposed in a pipe between the working fluid inlet 868 of the supply device 860 and the working fluid outlet 866 of the base 831, and can adjust the outflow amount of the working fluid.

  Therefore, when the flow rate is adjusted by the pressure adjustment valve 867 on the outlet side while the pressure adjustment valve 862 on the inlet side is kept constant, the followability of the pressure exerted by the working fluid is affected, which is a source of chatter. It is possible to affect the attenuation of the pressing force of the pressing means 820 against vibration.

  Therefore, it is possible to obtain the same effect as the vibration damping effect by the damper, and when the vertical balance of the pressing force is deviated based on the occurrence of vibration, the occurrence of tilting force in the direction of the rotation axis is suppressed. In addition, it is possible to control surface runout.

  The pressure regulating valves 862 and 867 are preferably manual type in consideration of setting frequency and cost, but may be automatic type. Further, the flow rate adjustment by the outlet side pressure adjustment valve 867 is preferable because it is simple. It is also possible to influence the followability of pressure. This is preferable in that the degree of freedom of control is increased.

  As described above, the chatter removing mechanism 810 according to the eighth embodiment is superior in the chatter removing effect as compared with the chatter removing mechanism 510 according to the fifth embodiment, and has further improved surface accuracy such as runout and roughness. Stabilization is possible.

It should be noted that the control by vibration detection according to the fifth embodiment can be appropriately combined. Further, it is possible to reduce the manufacturing cost as appropriate by sharing the pressing force generation means 830 and the working fluid supply device 860 as necessary.

1 is a side view of a processing apparatus according to Embodiment 1. FIG. FIG. 3 is an enlarged cross-sectional view for explaining a workpiece according to the first embodiment. It is a side view for demonstrating the milling cutter of the processing apparatus of FIG. It is a side view for demonstrating the comparative example which concerns on the chip | tip structure of a milling cutter. (A) And (B) is a top view for demonstrating the difference of a cutter eye, and has shown the case of the milling cutter and a cutting tool (lathe). (A) And (B) is the top view and side view for demonstrating the processing operation of the processing apparatus of FIG. 1, and has shown the initial position. (A) And (B) is the top view and side view for demonstrating the processing operation of the processing apparatus of FIG. 1, and has shown the advance position. (A) And (B) is the top view and side view for demonstrating the processing operation of the processing apparatus of FIG. 1, and has shown the retracted position immediately after completion | finish of a process of a rotor braking surface. (A) And (B) is the top view and side view for demonstrating the processing operation of the processing apparatus of FIG. 1, and has shown the reset to an initial position. It is an exploded view for demonstrating the upper mount means provided with the centering mechanism. It is a bottom view for demonstrating the Y-axis adjustment part in a centering mechanism. It is sectional drawing for demonstrating a Y-axis adjustment part. It is a top view for demonstrating the X-axis adjustment part in a centering mechanism. It is sectional drawing for demonstrating the 1st locking member of an X-axis adjustment part. It is sectional drawing for demonstrating the 2nd locking member of an X-axis adjustment part. It is a top view for demonstrating the operation | movement for supporting a 4 hole workpiece | work. It is a top view for demonstrating the operation | movement for supporting a 5 hole workpiece | work. FIG. 6 is a side view for explaining a rotation synchronization mechanism of a milling cutter according to a second embodiment. FIG. 10 is a side view for explaining a rotation synchronization mechanism of a milling cutter according to a third embodiment. FIG. 10 is a cross-sectional view for explaining an X-axis adjustment unit according to a fourth embodiment. FIG. 10 is a side view for explaining a chatter removing mechanism according to a fifth embodiment. It is a principal part side view of the processing apparatus which concerns on Embodiment 6. FIG. It is a side view for demonstrating the inclination-angle adjustment mechanism which concerns on the main-axis upper part of the processing apparatus of FIG. It is a top view of the inclination angle adjustment mechanism of FIG. It is a side view for demonstrating the inclination-angle adjustment mechanism which concerns on the main-axis lower part of the processing apparatus of FIG. FIG. 26 is a plan view of the tilt angle adjusting mechanism of FIG. 25. It is a top view for demonstrating the adjustment means which concerns on the inclination-angle adjustment mechanism of FIG. 23 and FIG. FIG. 10 is a cross-sectional view for explaining a main shaft lower portion and a connecting means for connecting the main shaft lower portion according to the seventh embodiment. It is sectional drawing regarding the line XXIX-line XXIX of FIG. It is sectional drawing regarding XXX-line XXX of FIG. It is sectional drawing regarding XXXI-line XXXI of FIG. FIG. 20 is a side view for explaining a chatter removing mechanism according to an eighth embodiment. It is a perspective view for demonstrating the press means shown by FIG. It is a top view for demonstrating arrangement | positioning of a press means. It is a conceptual diagram for demonstrating control of a press means.

Explanation of symbols

10. Work (assembly),
10A rotor
10B ... Bearing holder,
11, 12, .. rotor braking surface,
13. Nut,
14, 14A-14D, 24A-24D .. hub bolt part,
15 ... Locate pin,
16. Bearings
100 ... Processing equipment,
110 .. Work support part,
111. Work drive section,
112 .. Upper mounting means,
113 .. 1st unit,
114 .. Hook member,
115. Bearing
116. Spring,
117 .. Deformed member,
118 .. Stepped part,
120 .. second unit,
121 .. First lock member,
122 .. Second lock member,
123 .. Groove part,
124, Plate,
125 · bearing,
126. Spring,
127 .. Triangular member,
128 .. holding plate,
129 ・ ・ Chuck,
130 .. support part,
131 .. Lower mounting means,
132, 133 ... Swing clamp,
140 ・ ・ Milling tools,
141,145 ... Milling cutter
150 ... the cutter body,
151, 152 .. chip,
160 .. Tool support part,
161 .. upper part of main shaft (first main shaft part),
162..Motor,
164 .. Spline shaft (connection means),
165 .. Lower spindle (second spindle),
169 .. strut part,
170, 171, 172 .. slide base,
173 .. Stopper,
175..Slide guide,
176 .. Hydraulic cylinder,
178..Slide guide,
179 .. Adjustment unit,
180. ・ Motor,
181 ... A straight motion unit,
182 ... Coupling,
183 ... A straight motion unit,
190 .. Base part,
191 ... A linear motion unit,
192 ... Motor,
240 .. rotation synchronization mechanism,
242 ... Transmission unit
243 to 245 ・ ・ Gear,
246 .. transmission unit,
247-249 ・ ・ Gear,
260 .. Driving means,
261 .. axis,
280, 281 ... Drive means
340..Rotation synchronization mechanism,
342 .. transmission unit,
343 to 345 ・ ・ Gear,
346 .. transmission unit,
347-349 ・ ・ Gear,
360 .. Driving means,
361 .. axis
362 .. Driving means,
363 .. axis
380, 381 .. Driving means,
421 .. First lock member,
422 .. Second lock member,
423 .. groove part,
424 ... Plate
425 ... bearings,
426 spring,
427 ... Triangular member,
428 .. Holding plate,
429 ・ ・ Chuck,
510 .. Chatter removal mechanism,
511 .. Vibration detection means,
512..Pressing means,
513..Pressure force generating means,
514 .. Rotating body,
515 .. Control part,
610 .. Inclination angle adjustment mechanism,
615 .. slide base,
616 .. lower central end,
617 .. Upper side end,
620 ... Consolidated base
621 .. lower central end,
622 .. opening,
623A, 623B ... Bolt hole,
624A, 624B .. upper side surface,
625 .. Support plate,
626 .. lower center end,
627 .. upper side end,
630 ..Mount plate,
631 .. Lower center end,
632 .. opening,
633A, 633B ... Bolt hole,
634A, 634B .. upper side surface part,
635,636, ..support pins,
640 ... Adjusting jig,
641, ... base
642 .. Driving member,
643 .. tip part,
644 .. Locking means,
645 ... Adjusting jig,
660 .. tilt angle adjustment mechanism,
665 .. slide base,
666 .. upper central end,
667 .. Lower side edge,
670 ... consolidated base
671 .. upper central end,
672 .. Opening,
673A, 673B ... Bolt holes,
674A, 674B .. lower side surface part,
675 .. support plate,
676 .. upper central end,
677 ... Lower side edge,
680 ..Mount plate,
681 .. upper central end,
682 .. opening,
683A, 683B ... Bolt hole,
684A, 684B ... Lower side,
685,686..Support pins,
690, 695 ... Adjusting jig,
720 ・ ・ Universal joint mechanism,
730 .. Elastic body,
740 ..Upper tip,
741, 746 .. Protruding part,
750 ... lower tip,
751, 756 .. Protruding part,
810 ... Chatter removal mechanism,
820, 820A, 820B, 820C, 820D · · pressing means,
830..Pressing force generating means,
831 .. Base,
832 ... Rod
833 .. moving part,
834 .. Guide rod,
835 .. Through hole,
836 ・ ・ Pin,
838 .. Rotating body,
840 ・ ・ Common frame,
850 .. strut part,
860 .. Working fluid supply device,
861 .. Working fluid outlet,
863 .. Working fluid inlet,
866..Working fluid outlet,
868 .. Working fluid inlet,
DC ... Drive center,
BC · bearing center,
θ _{1 to} θ ₄ .. Angle.

Claims (29)

A rotor braking surface machining apparatus in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
Drive means for rotationally driving the assembly;
A tool for machining the rotor braking surface;
Mounting means for supporting the bearing holder at the center of the bearing with respect to the vehicle body mounting surface;
A centering mechanism for matching the bearing center and the drive center ,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
Each of the milling tools is provided with a linear motion unit for moving the milling cutters in the opposite directions with the same amount with respect to the rotor braking surfaces located on both sides, and the milling cutter is provided on one of the linear motion units. An apparatus for processing a rotor braking surface, characterized in that an adjustment unit capable of adjusting the position in the approaching / separating direction is provided . A rotor braking surface machining apparatus in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
Drive means for rotationally driving the assembly;
A tool for machining the rotor braking surface;
Mounting means for supporting the bearing holder at the center of the bearing with respect to the vehicle body mounting surface;
A centering mechanism for matching the bearing center and the drive center,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
The milling cutter, is accessible from an oblique direction toward the rotor braking surfaces, after machining of the rotor braking surface, a rotor braking the feed means for vertically spaced with respect to the rotor braking surfaces, and further comprising Surface processing equipment. Each of the milling tools is provided with a linear motion unit for moving the milling cutters in the opposite directions with the same amount with respect to the rotor braking surfaces located on both sides, and the milling cutter is provided on one of the linear motion units. The rotor braking surface processing apparatus according to claim 2, further comprising an adjustment unit capable of adjusting a position of the rotor in an approaching / separating direction. The apparatus for processing a rotor braking surface according to any one of claims 1 to 3 , further comprising a chatter removing mechanism for removing chatter generated during processing of the rotor braking surface. The said chatter removal mechanism has a press means for pressing the rotor braking surface located in both sides, The processing apparatus of the rotor braking surface of Claim 4 characterized by the above-mentioned. 6. The rotor braking surface processing apparatus according to claim 5 , wherein a plurality of the pressing means are provided and are arranged at uneven positions along the circumferential direction of the rotor braking surface. The pressing means includes a pressing force generating means for generating a pressing force, and a rotating body that is rotatably disposed at the tip of the pressing force generating means and that contacts the rotor braking surface,
The chatter removing mechanism removes chatter generated during processing of the rotor braking surface by transmitting a pressing force via the rotating body of the pressing means to press the rotor braking surface. The processing apparatus of the rotor braking surface of Claim 5 or Claim 6 . The pressing force generating means includes hydraulic / pneumatic reciprocating drive means, and controls the pressing force of the pressing means by adjusting the pressure of the working fluid of the reciprocating drive means. Item 8. The rotor braking surface machining apparatus according to Item 7 . The chatter removing mechanism has vibration detection means for detecting vibration of the assembly during processing of the rotor braking surface, and the pressing force of the pressing means is based on the vibration of the assembly detected by the vibration detection means. The rotor braking surface machining apparatus according to claim 5 , wherein the rotor braking surface machining apparatus is controlled. The said centripetal mechanism restrict | limits the movement of a rotation direction regarding the hub bolt part for fastening a rotor and a bearing holding body, and supports the radial direction so that movement is possible. processing apparatus of the rotor braking surfaces according to item 1. 11. The rotor braking surface machining apparatus according to claim 1 , further comprising a rotation synchronization mechanism for driving the milling cutter at a constant phase and at the same rotation speed. An inclination angle of the first main shaft portion on which a tool for machining the rotor braking surface on one side is rotatably attached, and a tool for machining the rotor braking surface on the other side are attached rotatably. the inclination angle of the second spindle part are, the processing apparatus of the rotor braking surfaces according to any one of claims 1 to 11, characterized in that it has a tilt angle adjusting mechanism for adjusting three-dimensionally. It has a connection means for connecting the 1st main shaft part and the 2nd main shaft part, and the connection means has a universal joint mechanism for absorbing inclination of the 1st main shaft part and the 2nd main shaft part. The rotor braking surface processing apparatus according to claim 12 , wherein The rotor braking surface processing apparatus according to claim 13 , wherein the universal joint mechanism includes an elastic body that absorbs inclination of the first main shaft portion and the second main shaft portion. A method for processing a rotor braking surface in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
A step for supporting the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
Steps for rotationally driving the assembly;
A step for matching the bearing center with the drive center;
Have a, a step for processing the rotor braking surface,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
Each of the milling tools is provided with a linear motion unit for moving the milling cutters in the opposite directions with the same amount with respect to the rotor braking surfaces located on both sides, and the milling cutter is provided on one of the linear motion units. Is equipped with an adjustment unit that can adjust the position in the direction of approaching / separating,
A step of moving the milling cutters in the opposite directions in the opposite directions by the linear motion unit;
And a step of adjusting the position of the milling cutter in the approaching / separating direction by the adjusting unit . A method for processing a rotor braking surface in an assembly in which a rotor and a bearing holder having a hub and a bearing cage are integrally incorporated,
A step for supporting the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
Steps for rotationally driving the assembly;
A step for matching the bearing center with the drive center;
A step for machining the rotor braking surface,
The tool is a milling tool having a milling cutter for simultaneously processing rotor braking surfaces located on both sides,
By the feeding means, the milling cutter, the steps for approaching obliquely toward the rotor braking surfaces, after machining of the rotor braking surface, by said feeding means, for spacing in a direction perpendicular to the rotor braking surfaces method for processing a rotor braking surface, characterized by further comprising the steps, a. Each of the milling tools is provided with a linear motion unit for moving the milling cutters in the opposite directions with the same amount with respect to the rotor braking surfaces located on both sides, and the milling cutter is provided on one of the linear motion units. Is equipped with an adjustment unit that can adjust the position in the direction of approaching / separating,
A step of moving the milling cutters in the opposite directions in the opposite directions by the linear motion unit;
And a step of adjusting the position of the milling cutter in the approaching / separating direction by the adjusting unit.
The method for processing a rotor braking surface according to claim 16. The method for machining a rotor braking surface according to any one of claims 15 to 17, further comprising a step of removing chatter generated during machining of the rotor braking surface by a chatter removing mechanism. In the step of removing chatter that occurs during machining of the rotor braking surface,
A pressing force generating means for generating a pressing force, the pressing force is rotatably disposed at the distal end of the generator, and the rotor braking surface and the rotating body contact, with a pressing means of the chatter removal mechanism having the 19. The method of processing a rotor braking surface according to claim 18 , wherein chatter generated during processing of the rotor braking surface is removed by transmitting a pressing force through the rotating body to press the rotor braking surface. . The method for processing a rotor braking surface according to claim 19 , wherein a plurality of the pressing means are provided and are arranged at uneven positions along the circumferential direction of the rotor braking surface. The rotor braking surface according to claim 19 or 20 , further comprising a step for controlling a pressing force of the pressing means based on vibrations of the assembly detected during processing of the rotor braking surface. Processing method. The pressing force generating means includes hydraulic / pneumatic reciprocating drive means, and controls the pressing force of the pressing means by adjusting the pressure of the working fluid of the reciprocating drive means. Item 22. The method for processing a rotor braking surface according to any one of Items 19-21 . In the step for aligning the bearing center and the drive center,
23. The hub bolt portion for fastening the rotor and the bearing holder, the movement in the rotational direction is restricted, and the radial direction is movably supported. Processing method of rotor braking surface. An inclination angle of the first main shaft portion on which a tool for machining the rotor braking surface on one side is rotatably attached, and a tool for machining the rotor braking surface on the other side are attached rotatably. The method for processing a rotor braking surface according to any one of claims 15 to 23 , further comprising a step of three-dimensionally adjusting an inclination angle of the second main shaft portion. The step of absorbing the inclination of the first main shaft portion and the second main shaft portion by a universal joint mechanism included in a connecting means for connecting the first main shaft portion and the second main shaft portion. Item 25. A method of processing a rotor braking surface according to Item 24 . 26. The method of processing a rotor braking surface according to claim 25 , wherein the universal joint mechanism includes an elastic body that absorbs inclination of the first main shaft portion and the second main shaft portion. A control program for controlling the rotor braking surface machining apparatus according to claim 1,
A procedure for the mounting means to support the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
A procedure for rotationally driving the assembly;
The centripetal mechanism has a procedure for matching the bearing center and the drive center;
A procedure for machining the rotor braking surface by the tool ;
A procedure for causing the linear motion unit to move the milling cutters in the same amount in the opposite direction and away from each other; and
A procedure for the adjustment unit to adjust the position of the milling cutter in the approaching / separating direction ;
A control program for causing the rotor braking surface machining apparatus to execute. A control program for controlling the rotor braking surface machining apparatus according to claim 2,
A procedure for the mounting means to support the bearing holder at the center of the bearing with respect to the vehicle mounting surface;
A procedure for rotationally driving the assembly;
The centripetal mechanism has a procedure for matching the bearing center and the drive center;
A procedure for machining the rotor braking surface by the tool;
A procedure for the feeding means to cause the milling cutter to approach the rotor braking surface from an oblique direction;
A procedure for the feeding means to separate the rotor braking surface in a direction perpendicular to the rotor braking surface after processing the rotor braking surface;
A control program for causing the rotor braking surface machining apparatus to execute. The control program according to claim 27 or 28, wherein the chatter removing mechanism further causes the rotor braking surface machining apparatus to execute a procedure for removing chatter generated during machining of the rotor braking surface. .

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