JP5522541B2 - Rotating machine - Google Patents

Description

  The present invention relates to a rotary processing apparatus including a tool holder that is connected to a spindle and rotates and processes a workpiece with a tool.

  Generally, a processing apparatus is used that processes an inner wall surface of a pilot hole provided in advance on a workpiece (workpiece) with a cutting tool such as a boring bar. Usually, in a boring bar, a cutting tool (tool) is attached to a tool body, and when the wear of the cutting tool progresses, the cutting edge position of the cutting tool causes a positional variation in the radial direction of the tool body. For this reason, there is a demand for a machining apparatus capable of accurately correcting the position of the cutting tool with respect to the radial direction of the tool body.

  For example, a cutting tool disclosed in Patent Document 1 is known. This cutting tool has a tool body rotated about an axis, and a cutting edge is provided on the outer periphery of the tool body, and a finishing cutting edge for finishing is provided separately from the cutting edge in the radial direction of the tool body. It is arranged so that it can appear and disappear.

  In the cutting tool, a piston chamber is formed inside the tool body, and a piston is disposed in the piston chamber so as to be movable in the axial direction. The rear end side of the tool body in the piston chamber is closer to the first space than the piston. The tip end side of the tool body with respect to the piston is the second space, and the tool body is provided with a fluid supply device for supplying fluid to the piston chamber, and the fluid is supplied to the first space or the second space. And a switching device for selectively supplying to the device.

  Furthermore, a rod-shaped member is connected to the tool body distal end side of the piston, and the rod-shaped member is disposed at the tool body distal end side portion so as to intersect the rod-shaped member, and the rod-shaped member is connected to the axis line. By moving in the direction, a slide member is provided which is moved in a direction intersecting the axial direction, and a finishing cutting edge is provided on the outer peripheral side of the tool body of the slide member. An adjustment screw is provided on the tool body tip side of the rod-shaped member so that the tip surface of the rod-shaped member abuts in a state where the rod-shaped member is moved to the tool body tip side by a piston.

  Therefore, a rotating member that rotates the adjusting screw to adjust the axial position of the adjusting screw is provided on the tip end surface of the tool body, and the axial line is recessed radially inward on the outer periphery of the rotating member. An inclined groove that is inclined with respect to the surface is formed.

  Further, a boring bar disclosed in Patent Document 2 includes a cylindrical main body outer flange portion, a head extension shaft in which one end is disposed inside the main body outer shell portion and a tip is attached to the other end, and the head The head is connected in the vicinity of the end of the head extension shaft opposite to the side to which the tip of the head extension shaft is attached, and is connected to the end of the main body outer shell from the substantially intermediate portion of the extension shaft. And a restriction groove for restricting movement of the extension shaft only in a direction perpendicular to a predetermined axis of the head extension shaft. Then, by operating the head extension shaft in the groove direction of the restriction groove, the support portion is deformed, and the tip position attached to the tip of the head extension shaft can be adjusted.

  JP 2007-283469 A   JP 2004-144841 A

  The present invention has been made in connection with this type of rotary processing apparatus, and can accurately and surely adjust the position of the tool in the radial direction, and can perform high-precision processing by holding the tool firmly. In addition, an object of the present invention is to provide a rotary machining apparatus that can easily improve versatility.

  The present invention relates to a rotary processing apparatus including a tool holder that is connected to a spindle and rotates and processes a workpiece with a tool.

  In this rotary processing apparatus, the tool holder holds the tool and is provided with a sliding shaft, a movable member that can advance and retreat in the radial direction intersecting the rotation axis direction of the spindle, and a clamp hole portion into which the sliding shaft is inserted. An elastic clamp member that reduces the diameter of the clamp hole portion by a restoring force and holds the sliding shaft immovable with an external force released, and increases the fluid pressure to be supplied to increase the pressure. A fluid pressure supply mechanism that applies the fluid pressure to the elastic clamp member to expand the diameter of the clamp hole so that the slide shaft can be moved.

  Further, in this rotary processing apparatus, the clamp hole portion is configured to have a circular shape of the opening cross section or a square shape of the opening cross section, and the elastic clamp member has an opening portion for expanding and reducing the opening size of the clamp hole portion. It is preferable to be provided in communication with the clamp hole.

  Furthermore, in this rotary processing apparatus, it is preferable that the elastic clamp member is provided with a screw hole opening for inserting a bolt in order to expand and contract the opening dimension of the clamp hole.

  Furthermore, in this rotary processing apparatus, it is preferable that the fluid pressure supply mechanism is an air-hydraulic converter that uses air pressure as the supplied fluid pressure and uses oil pressure as the increased fluid pressure.

  In this rotary processing apparatus, it is preferable that the tool holder is provided with a pair of shaft holding members having sliding hole portions into which both end portions of the sliding shaft are inserted.

  Further, in this rotary machining apparatus, it is preferable that the tool holder is provided with a friction damper portion that absorbs vibration energy generated during machining of the workpiece by sliding friction.

  In the rotary processing apparatus according to the present invention, in a state where the external force is released from the elastic clamp member, the clamp hole is elastically deformed in the direction of reducing the diameter by the restoring force of the elastic clamp member itself. For this reason, the sliding shaft inserted in the clamp hole is held immovable by the restoring force of the elastic clamp member. On the other hand, by expanding the diameter of the clamp hole through the fluid pressure applied from the fluid pressure supply mechanism, the clamping action of the elastic clamp member is released, and the sliding shaft becomes movable.

  Therefore, it is not necessary to always apply an external force (for example, oil pressure) to clamp the sliding shaft, and the external force can be applied and unclamped only when the tool needs to be moved. Thereby, there is no possibility that the sliding shaft is unclamped unnecessarily due to pressure leakage or the like.

  Therefore, the tool can be accurately and surely adjusted in the radial direction intersecting the rotation axis direction, and the tool can be firmly held to perform high-precision machining, and versatility can be easily improved. It becomes possible to plan.

  It is a schematic explanatory drawing of the boring apparatus concerning the 1st Embodiment of this invention.   It is the II-II sectional view taken on the line of FIG. 1 of the tool position adjustment mechanism which comprises the said boring apparatus.   It is the III-III sectional view taken on the line of FIG. 1 of the said tool position adjustment mechanism.   It is explanatory drawing at the time of forming a clamp hole part in the elastic clamp member which comprises the said tool position adjustment mechanism.   It is explanatory drawing at the time of connecting an adjustment unit to the said tool position adjustment mechanism.   It is explanatory drawing when the said tool position adjustment mechanism and the said adjustment unit are further approached.   It is explanatory drawing at the time of expanding the diameter of the said clamp hole part of the said elastic clamp member.   It is explanatory drawing when the said tool position adjustment mechanism and the said adjustment unit are made still closer.   It is explanatory drawing at the time of reducing the diameter of the said clamp hole part of the said elastic clamp member.   It is operation | movement explanatory drawing of the said tool position adjustment mechanism.   It is sectional explanatory drawing of the tool position adjustment mechanism which comprises the boring apparatus which is a rotary processing apparatus which concerns on the 2nd Embodiment of this invention.   FIG. 12 is a cross-sectional view of the tool position adjusting mechanism taken along line XII-XII in FIG. 11.   It is sectional explanatory drawing of the tool position adjustment mechanism which comprises the boring apparatus which is a rotary processing apparatus which concerns on the 3rd Embodiment of this invention.   It is operation | movement explanatory drawing of the said tool position adjustment mechanism.

  As shown in FIG. 1, a boring apparatus 10 that is a rotary processing apparatus according to the first embodiment of the present invention includes a tool holder (boring bar) 14 that is detachable from a spindle 12. The spindle 12 is provided in a machining center (not shown) and can move, for example, in the directions of three orthogonal axes.

  A shank portion 16 that is fitted into the tapered hole portion 12 a of the spindle 12 is provided at one end portion of the tool holder 14. At the other end of the tool holder 14, the position of a cutting tool (tool) 18 such as a cutting tip is adjusted in the radial direction (arrow X direction) intersecting the rotation axis direction (arrow Z direction) of the tool holder 14. A tool position adjusting mechanism 20 is provided.

  As shown in FIGS. 1 and 2, the tool position adjustment mechanism 20 includes a housing 22, and an air hydraulic pressure conversion unit (fluid pressure supply mechanism) 24 is provided in the housing 22. The air-hydraulic converter 24 converts the air pressure generated by the driving air supplied from the adjusting unit 90 described later via the fluid receiving port 26 into oil pressure. The fluid receiving port 26 is provided on a side portion of the housing 22, and the fluid receiving port 26 communicates with the pneumatic cylinder chamber 30 through a driving air conduit 28.

  A hydraulic cylinder chamber 32 having a smaller capacity than this is communicated with the pneumatic cylinder chamber 30 in series. A piston 34 is slidably disposed in the pneumatic cylinder chamber 30, and a rod 36 extending from the piston 34 projects into the hydraulic cylinder chamber 32 with a sliding seal 38 interposed therebetween.

  As shown in FIG. 2, the hydraulic cylinder chamber 32 communicates with the hydraulic cylinder chambers 44a and 44b via the hydraulic pipelines 42a and 42b. Pistons 46a and 46b are slidably disposed in the hydraulic cylinder chambers 44a and 44b, and pressing pins 48a and 48b extend from the pistons 46a and 46b. A disc-shaped support plate portion 50 is fixed to the distal end portion of the housing 22, and the support plate portion 50 is provided with disc springs 52 a and 52 b that are externally attached to the pressing pins 48 a and 48 b.

  As shown in FIGS. 1 and 2, a friction damper portion 54 is provided between the housing 22 and the support plate portion 50 to absorb the vibration energy generated when the workpiece is processed by sliding friction. The friction damper portion 54 includes a damper member 58 that is inserted into the groove 56 on the outer periphery of the housing 22 and that can slide and rotate in the circumferential direction. A magnet 60 is embedded in one end surface of the damper member 58 and is fixed to the housing 22 by a magnetic force. When chatter vibration occurs, the damper member 58 is vibrated in the circumferential direction, and is arranged so as to generate friction (friction) with the contact surface of the housing 22.

  As shown in FIGS. 1 to 3, the support plate portion 50 holds the cutting tool 18 and is provided with a pair of sliding shafts 62 a and 62 b that can advance and retreat in the radial direction intersecting the rotation axis direction of the spindle 12. The clamp hole portions 66a and 66b having circular opening cross-sections for inserting the moving member 64 and the sliding shafts 62a and 62b are inserted, and the clamp hole portions 66a and 66b are contracted by a restoring force in a state where the external force is released. Elastic clamp members 68a, 68b that clamp the diameters of the slide shafts 62a, 62b so that they cannot move, and slide hole portions 70a, 70b into which both ends of the slide shafts 62a, 62b are inserted. A pair of shaft holding members 72a and 72b are provided.

  The elastic clamp members 68a and 68b are formed integrally with the support plate portion 50 and have slits 74a and 74b for expanding and contracting the hole diameters of the clamp hole portions 66a and 66b. Specifically, as shown in FIG. 4, the elastic clamp members 68a and 68b are provided with slits 74a and 74b after the pilot holes are processed.

Next, the bolt 76 is screwed into the screw hole 77 so that the slits 74a and 74b are slightly expanded, and the elastic clamp members 68a and 68b are elastically deformed (that is, a state having a restoring force). Clamp hole portions 66a and 66b having the same dimensions (diameter D) as the moving hole portions 70a and 70b are formed. When the bolts 76 are removed from the screw holes 77, the elastic clamp members 68a and 68b are restored, so that the diameters of the clamp hole portions 66a and 66b are kept smaller than the diameter D (see the two-dot chain line in FIG. 4). .

  On the other hand, when the slide shafts 62a and 62b are assembled, the bolts 76 are screwed into the screw holes 77 and the clamp holes 66a and 66b are expanded in diameter, and the slide shafts 62a and 62b are connected to the clamp holes 66a. , 66b. Then, when the bolts 76 are removed from the screw holes 77, the assembling work of the sliding shafts 62a and 62b is performed.

  Support plates 78a and 78b are provided on the shaft holding members 72a and 72b. Holes 80a and 80b having a predetermined length in the axial direction are formed at the ends of the sliding shafts 62a and 62b on the shaft holding member 72b side, and springs 82a are accommodated in the holes 80a and 80b. , 82b are supported by the support plate 78b.

  The sliding shafts 62 a and 62 b are fixed to the moving member 64 via bolts 84. The moving member 64 is provided with a reference pin 86, and the reference pin 86 penetrates the support plate 78a and protrudes to the outside by a predetermined length.

  As shown in FIG. 5, the adjustment unit 90 includes a fluid supply unit 92, a fluid supply slide port 94, and a position adjustment reference member 96. The fluid supply unit 92 supplies air and can control the supplied air pressure. The fluid supply slide port 94 is slidable in the direction of the arrow X with respect to the fluid supply unit 92 and is provided with a connection port 98 corresponding to the fluid receiving port 26. The reference member 96 for position adjustment is fixed to the fluid supply unit 92 and can come into contact with a reference pin 86 provided on the moving member 64.

  In the boring apparatus 10 configured as described above, an operation for adjusting the tool diameter will be described below.

  As shown in FIG. 5, the spindle 12 is relatively close to the adjustment unit 90 via a machining center (not shown), and the fluid supply slide port 94 of the adjustment unit 90 and the fluid receiving port 26 of the tool position adjustment mechanism 20 are connected. Is done. Specifically, the connection port 98 of the fluid supply slide port 94 is connected to the fluid receiving port 26.

  At that time, the fluid supply slide port 94 of the adjustment unit 90 is in a state of sliding most to the left in FIG. Further, in this state, the reference pin 86 of the moving member 64 is positioned so as to face the position adjustment reference member 96 of the adjustment unit 90. The elastic clamp members 68a and 68b are in a state in which the clamp holes 66a and 66b are reduced in diameter by elastic deformation and the moving member 64 is clamped via the slide shafts 62a and 62b.

  Subsequently, the fluid supply unit 92 supplies air via the connection port 98 of the fluid supply slide port 94. Accordingly, the air pressure above the piston 34 of the pneumatic cylinder chamber 30 constituting the pneumatic / hydraulic converter 24 increases, so that the piston 34 of the pneumatic / hydraulic converter 24 moves downward as shown in FIG. For this reason, the oil pressure in the space below the piston 34 in the pneumatic cylinder chamber 30, that is, the hydraulic cylinder chamber 32 increases.

  Thus, the hydraulic oil in the hydraulic cylinder chambers 44a and 44b is increased through the hydraulic lines 42a and 42b due to the increase in the hydraulic oil pressure, and the pistons 46a and 46b are moved downward. Accordingly, as shown in FIG. 7, the pressing pins 48a and 48b extending from the pistons 46a and 46b move downward to expand the slits 74a and 74b of the elastic clamp members 68a and 68b. And the clamp hole parts 66a and 66b of the elastic clamp members 68a and 68b are expanded in diameter by elastic deformation, and the sliding shafts 62a and 62b are brought into an unclamped state.

  The moving member 64 to which the sliding shafts 62a and 62b are fixed moves to the right in FIG. 6 under the action of the elastic force of the springs 82a and 82b. As the slide shafts 62 a and 62 b are unclamped and slide in the radial direction (arrow X direction), the reference pin 86 of the moving member 64 contacts the reference member 96 for position adjustment of the adjustment unit 90.

  At this time, the position of the cutting tool 18 has moved to a position furthest away from the rotation axis of the tool holder 14. That is, the fluid supply slide port 94 is connected to the fluid receiving port 26 in a state of being located on the leftmost side in FIG. It is in contact with the reference member 96. Here, the position of the blade 18 with respect to the rotation axis of the tool holder 14, that is, the tool diameter is known, and this state becomes the reference state.

  From this reference state, as shown in FIG. 8, the NC function of the machine is used to change the relative position between the spindle 12 and the reference member for position adjustment 96 in the direction of approaching. In the machining center for moving the spindle 12, the spindle 12 is moved in the direction in which the relative position with the reference member 96 for position adjustment approaches using the drive shaft.

  Here, the relationship between the tool diameter in the reference state and the tip position of the reference pin 86 is known. Accordingly, the tool diameter is adjusted by moving the spindle 12 close to the position adjusting reference member 96 in accordance with the target tool diameter.

  Further, as shown in FIG. 9, the air pressure of the air hydraulic pressure conversion unit 24 is released in a state where the fluid supply unit 92 is connected to the connection port 98 of the fluid supply slide port 94. For this reason, the hydraulic pressure on the lower side of the piston 34 of the hydraulic / pneumatic pressure converting unit 24 is lowered, and the pressing pins 48a and 48b are moved upward via the elastic force of the disc springs 52a and 52b. Thereby, the clamp hole portions 66a and 66b of the elastic clamp members 68a and 68b are reduced in diameter by a restoring force of elastic deformation to clamp the slide shafts 62a and 62b (see FIG. 2).

  As described above, the moving member 64 is positioned, and the position of the blade 18 is fixed. After the clamping of the slide shafts 62a and 62b is completed, the spindle 12 is moved to the machining position, and drilling such as boring is performed via the cutting tool 18 under the rotational action of the spindle 12.

  Here, since the sliding shafts 62a and 62b are slightly deformed by cutting resistance, circumferential vibration is likely to occur in the moving member 64 during processing. That is, this deformation becomes a minute circumferential vibration, which may appear as a pattern on the cutting surface.

  Therefore, in the first embodiment, the friction damper portion 54 acts. In the friction damper portion 54, friction due to the magnetic force from the magnet 60 occurs between the damper member 58 and the contact surface of the housing 22 when the ring-shaped damper member 58 vibrates in the circumferential direction. This frictional energy consumes and absorbs vibration energy and can prevent chattering.

  In this case, according to the first embodiment, the clamp hole portions 66a and 66b are reduced in diameter by the restoring force of the elastic clamp members 68a and 68b themselves in a state where the external force is released from the elastic clamp members 68a and 68b. Elastically deforms in the direction. That is, as shown in FIG. 4, the clamp holes 66a and 66b are formed in the elastic clamp members 68a and 68b in a state where the slits 74a and 74b are slightly expanded. For this reason, when the bolt 76 is removed, the elastic clamp members 68a and 68b are restored, and the diameters of the clamp holes 66a and 66b are maintained smaller than the diameter D.

  Therefore, the sliding shafts 62a and 62b inserted in the clamp holes 66a and 66b are clamped immovably by the restoring force of the elastic clamp members 68a and 68b. On the other hand, the clamp action of the elastic clamp members 68a and 68b is released by expanding the diameters of the clamp holes 66a and 66b via the hydraulic pressure applied from the pneumatic oil pressure conversion unit 24, and the slide shafts 62a and 62b can move. become.

  Thereby, in order to clamp the sliding shafts 62a and 62b, it is not always necessary to continuously apply an external force (for example, oil pressure), and the external force is applied and unclamped only when the blade 18 needs to be moved. Can be made. For this reason, there is no possibility that the sliding shafts 62a and 62b are unclamped unnecessarily due to pressure leakage or the like.

  Therefore, the cutting tool 18 can be accurately and surely adjusted in the radial direction intersecting the rotation axis direction, and the cutting tool 18 can be firmly held to perform high-precision processing, and versatility can be easily improved. The effect that it becomes possible to aim at is acquired.

  Further, in the first embodiment, a pair of shaft holding members 72a and 72b having sliding hole portions 70a and 70b into which both end portions of the sliding shafts 62a and 62b are inserted are provided. As shown in FIG. 10, a cutting force in the rotational direction is applied to the blade 18 during the processing rotation of the tool holder 14. Since the cutting tool 18 is attached to the moving member 64 integrated with the sliding shafts 62a and 62b, a force to bend is applied to the sliding shafts 62a and 62b, and the axis of the sliding shafts 62a and 62b. Tries to change as the deformation line.

  As shown in FIG. 10, the deformation force of the sliding shafts 62a and 62b generates contact locking force due to twisting with the walls of the sliding hole portions 70a and 70b at the shaft ends, that is, braking force, and the moving member 64 The shaft core is deformed and the movement in the axial direction is locked. Thus, the sliding shafts 62a and 62b are slid with the clamping force due to the restoring force of the rigid elastic body of the central elastic clamping members 68a and 68b, and in addition to the sliding hole portions 70a and 70b at both ends during processing. A braking force due to the deformation stress of the shafts 62a and 62b is applied, and a high holding rigidity can be maintained by a double effect.

  FIG. 11 is a cross-sectional explanatory view of a tool position adjusting mechanism 100 constituting a boring apparatus which is a rotary processing apparatus according to the second embodiment of the present invention.

  Note that the same components as those in the boring apparatus 10 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Similarly, in the third embodiment described below, detailed description thereof is omitted.

  The fluid receiving port 26 is provided with first and second ports (not shown), the first port communicates with the first driving air duct 28a, and the second port constitutes a flow path system. The second drive air conduit 28b communicates with the second drive air conduit 28b. The first drive air conduit 28a communicates with the pneumatic cylinder chamber 30, while the second drive air conduit 28b extends in the housing 22 and is provided from the support plate portion 50 to the shaft holding member 72b. The air chambers 102a and 102b communicate with each other.

  The air chambers 102a and 102b constitute a pneumatic cylinder chamber, and the sliding shafts 62a and 62b constitute a piston. That is, as a moving actuator for the sliding shafts 62a and 62b, a pneumatic mechanism is employed instead of the elastic force of the springs 82a and 82b.

  As shown in FIG. 12, the adjustment unit 90 includes fluid supply slide ports 94a and 94b. The fluid supply slide port 94a includes a first connection port 98a, and the fluid supply slide port 94b includes a second connection port. A port 98b is provided. The first connection port 98a communicates with the first drive air conduit 28a, and the second connection port 98b communicates with the second drive air conduit 28b.

  In the second embodiment configured as described above, the fluid supply slide ports 94a and 94b of the adjustment unit 90 and the fluid reception port 26 of the tool position adjustment mechanism 100 are connected. Therefore, the first connection port 98a of the fluid supply slide port 94a communicates with the first drive air conduit 28a, while the second connection port 98b of the fluid supply slide port 94b is connected to the second drive air conduit 28b. Communicate with.

  Accordingly, air is supplied to the pneumatic cylinder chamber 30 constituting the pneumatic / hydraulic converter 24 via the first driving air pipe 28a, and the sliding shafts 62a and 62b are brought into an unclamped state. In this state, when air is supplied to the second drive air duct 28b, the air is introduced into the air chambers 102a and 102b provided in the shaft holding member 72b. As a result, the unclamped slide shafts 62a and 62b move to the right side in FIG. 12 via the air pressure, and the position of the blade 18 is adjusted in the same manner as in the first embodiment.

  Next, when the supply of air to the first and second drive air ducts 28a and 28b is stopped, the clamp hole portions 66a and 66b of the elastic clamp members 68a and 68b are reduced in diameter by a restoring force of elastic deformation. Then, the sliding shafts 62a and 62b are clamped.

As described above, in the second embodiment, a pneumatic mechanism is employed instead of the elastic force of the springs 82a and 82b as the moving actuators of the sliding shafts 62a and 62b, which is the same as in the first embodiment. The effect is obtained.
FIG. 13 is a cross-sectional explanatory view of a tool position adjusting mechanism 110 constituting a boring apparatus that is a rotary processing apparatus according to the third embodiment of the present invention.

  In the first and second embodiments, the sliding shafts 62a and 62b having a circular cross section are used, but in the third embodiment, the sliding shafts 112a and 112b having a quadrangular cross section are provided. .

  In place of the elastic clamp members 68a and 68b, elastic clamp members 113a and 113b are used, and the elastic clamp members 113a and 113b have a clamp hole portion 114a having a rectangular opening cross section for inserting the sliding shafts 112a and 112b, 114b. Slits 74a and 74b communicate with the clamp holes 114a and 114b, and when the external force is released, the clamp shafts 114a and 114b are contracted by the restoring force to move the sliding shafts 112a and 112b. Clamp impossible.

  On the other hand, as shown in FIG. 14, when the pistons 46a and 46b are moved downward by increasing the pressure of the hydraulic oil, the pressing pins 48a and 48b extending from the pistons 46a and 46b are moved downward to be elastic. The slits 74a and 74b of the clamp members 113a and 113b are pushed and expanded. Then, the clamp hole portions 114a and 114b of the elastic clamp members 68a and 68b are expanded by elastic deformation, and the sliding shafts 112a and 112b are brought into an unclamped state. Therefore, in the third embodiment, the same effect as in the first and second embodiments can be obtained.

DESCRIPTION OF SYMBOLS 10 ... Boring apparatus 12 ... Spindle 14 ... Tool holder 18 ... Cutting tool 20, 100, 110 ... Tool position adjustment mechanism 22 ... Housing 24 ... Pneumatic hydraulic pressure conversion part 26 ... Fluid receiving port 28, 28a, 28b ... Air pipe line 30 ... Pneumatic cylinder chamber 32 ... Working hydraulic cylinder chambers 34, 46a, 46b ... Pistons 42a, 42b ... Hydraulic pipes 44a, 44b ... Hydraulic cylinder chambers 48a, 48b ... Press pins 50 ... Support plate portion 54 ... Friction damper portion 58 ... Damper Member 60 ... Magnets 62a, 62b, 112a, 112b ... Sliding shaft 64 ... Moving members 66a, 66b, 114a, 114b ... Clamp holes 68a, 68b, 113a, 113b ... Elastic clamp members 70a, 70b ... Sliding holes 72a 72b ... Shaft holding members 74a, 74b ... Lit 78a, 78b ... Support plates 82a, 82b ... Spring 86 ... Reference pin 90 ... Adjustment unit 92 ... Fluid supply section 94 ... Fluid supply slide port 96 ... Position adjustment reference members 98, 98a, 98b ... Connection ports 102a, 102b ... Air chamber

Claims (6)

A rotary processing apparatus including a tool holder that is coupled to a spindle and rotates and processes a workpiece with a tool,
The tool holder holds the tool and is provided with a sliding shaft, and a movable member capable of moving forward and backward in a radial direction intersecting the rotation axis direction of the spindle,
An elastic clamp member having a clamp hole portion for inserting the slide shaft, and holding the slide shaft immovable by reducing the diameter of the clamp hole portion by a restoring force in a state where an external force is released;
A fluid pressure supply mechanism that increases the fluid pressure to be supplied and applies the increased fluid pressure to the elastic clamp member, thereby expanding the diameter of the clamp hole and moving the sliding shaft;
A rotary machining apparatus comprising: The rotary machining device according to claim 1, wherein the clamp hole is configured in an opening cross-section circular shape or an opening cross-section angular shape,
The rotary processing apparatus, wherein the elastic clamp member is provided with an opening communicating with the clamp hole for expanding and reducing the opening dimension of the clamp hole.   3. The rotary machining apparatus according to claim 1, wherein the elastic clamp member is provided with a screw hole opening for inserting a bolt in order to expand or contract an opening dimension of the clamp hole. .   4. The rotary machining apparatus according to claim 1, wherein the fluid pressure supply mechanism uses air pressure as the supplied fluid pressure and uses hydraulic pressure as the increased fluid pressure. 5. A rotary machining apparatus that is a hydraulic pressure conversion unit.   5. The rotary machining apparatus according to claim 1, wherein the tool holder is provided with a pair of shaft holding members having sliding hole portions into which both end portions of the sliding shaft are inserted. Rotating machine characterized by   The rotary machining apparatus according to any one of claims 1 to 5, wherein the tool holder is provided with a friction damper that absorbs vibration energy generated during machining of the workpiece by sliding friction. Rotating machine.

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