JP2019119026A - Gear processing device - Google Patents

Abstract

To provide a gear processing device in which attachment/detachment of a tool can be efficiently performed.SOLUTION: A gear processing device comprising: an annular housing 21; an annular tool supporter which is rotatably located on an inner peripheral side of the housing 21; an internal gear-shaped tool 4 which is attached to an inner peripheral side of the tool supporter, and is engaged with a processed gear; and a fixation mechanism for fixing the tool 4 to the tool supporter. The fixation mechanism comprises: at least one port part which is provided on the tool supporter, and performs inflow of an oil from the exterior and discharge of the oil to the exterior; an annular flow channel which is formed on an inner peripheral surface of the tool supporter along a circumferential direction, and is communicated with the port part; and a deformable member which is closely adhered to the inner peripheral surface of the tool supporter along the circumferential direction so as to close the annular flow channel, and is deformable so as to press an outer peripheral surface of the tool 4 by inflow of the oil into the annular flow channel.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a gear machining device.

  Conventionally, for example, honing is known as finishing on gears. In these processes, finish machining is performed by rotating the workpiece gear to be processed and the grinding wheel gear while meshing with each other.

  For example, Patent Document 1 describes a gear processing apparatus that performs honing processing. In this device, a gear to be processed is supported by being pinched from both axial ends by a pair of fixing tools, and the gear is engaged with an annular tool having an internal gear-like tool. The gear is finished by rotating the tool and the gear together in this state.

  By the way, in an apparatus like the above-mentioned patent documents 1, although an internal gear-like tool is attached to an annular support, attachment of a tool is performed by the following fixing mechanisms. That is, the cylindrical deformation member is attached to the inner wall surface of the annular support, and the tool is attached to the inner wall surface of the deformation member. Further, in the support, a plurality of insertion holes are formed at predetermined intervals in the circumferential direction, and the tip of a pin screwed to the support is inserted into each of the insertion holes. Further, in the insertion hole, a communication hole communicating with the inner circumferential surface of the support is formed, and the insertion hole and the communication hole are filled with hydraulic oil.

  With the above configuration, when the pin is screwed into the insertion hole, the pressure of the hydraulic fluid is increased, and the hydraulic fluid presses the deformation member radially inward through the communication hole. As a result, the tool is pressed and fixed to the support.

JP, 2013-18080, A

  However, since it takes time for the operation to screw in a plurality of pins artificially and to enter, there has been a demand for an improvement in which the tool can be easily attached and detached. The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a gear machining apparatus capable of efficiently performing tool attachment and detachment.

  A gear machining apparatus according to the present invention comprises an annular housing, an annular tool support rotatably disposed on the inner circumferential side of the housing, and an inner circumferential side of the tool support and mounted on a gear to be processed. It has an internal gear-shaped tool that meshes and a fixing mechanism for fixing the tool to the tool support, the fixing mechanism being provided on the tool support, to the inflow of oil from the outside and to the outside And at least one port portion for discharging oil, an annular flow path formed along the circumferential direction on an inner circumferential surface of the tool support and communicating with the port portion, and the tool support A deformation member configured to be in close contact with the inner peripheral surface of the body so as to close the annular channel and to press the outer peripheral surface of the tool by oil inflow into the annular channel; Is equipped.

  In the gear processing apparatus, when the port portion is pressed from the outside, the port is opened to connect the annular flow path with the outside, and when the pressure from the outside is released, the annular flow path and the outside are Can be configured to be in a closed state that blocks the communication of

  Each of the above gear processing devices can further include a flexible hose connected to the pressing member for supplying oil from the pressing member to the port portion and discharging oil from the pressing member. .

  In each of the above-described gear machining devices, the pressing member may be detachably fixed and a positioning member may be further provided for positioning the pressing member at a position opposite to the port portion.

  In each gear processing device, a pressing member configured to be capable of pressing the port portion, and the pressing member is reciprocably fixed in the axial direction of the tool support, and the pressing member is the port portion. And a positioning member configured to be moved to a working position opposite to the moving position and a retreating position radially outward of the port portion, and for reciprocating the positioning member between the working position and the retreating position It is possible to further include a first drive unit, and a second drive unit configured to reciprocate the pressing member in the operating position in the axial direction.

  In each of the above gear machining devices, the port portion can be provided on one end surface in the axial direction of the tool support.

  According to the gear machining device according to the present invention, the tool can be efficiently attached and detached.

It is a perspective view of a gear processing device concerning one embodiment of the present invention. It is a front view of FIG. It is a top view of FIG. It is a side view of the tool unit of FIG. It is a perspective view of the tool unit of FIG. FIG. 5 is a partial cross-sectional view of the housing in FIG. 4; It is a partial expanded sectional view around a tool. It is an expanded sectional view of a port part. It is an expanded sectional view of a port part. It is a sectional view near a filler and a port part. It is sectional drawing of the press member provided in the filler. It is sectional drawing of the press member provided in the filler. It is a sectional view explaining oil supply of hydraulic fluid by a filler. It is a front view which shows the state in which a positioning member exists in a retracted position. It is a front view which shows the state in which a positioning member exists in an operating position. It is a sectional view near a filler and a port part. It is a sectional view near a filler and a port part.

  Hereinafter, an embodiment of a gear machining apparatus according to the present invention will be described with reference to the drawings. 1, 2 and 3 are a perspective view, a front view and a plan view, respectively, of a gear machining device according to the present embodiment. In the following description, the left and right of FIG. 1 will be referred to as the X axis direction or left and right direction, the top and bottom of FIG. I will. However, the present invention is not limited to these directions.

  As shown in FIGS. 1 to 3, the gear machining device according to the present embodiment includes a tool unit 2 and a work support unit 3 disposed on a base 1. The tool unit 2 has an annular housing 21 which is formed in an annular shape and to which the tool 4 is fixed, and the axial direction of the housing 21 is disposed so as to be generally directed in the X axis direction to mesh with the gear which is the work W It is supposed to be. The work support unit 3 is composed of a headstock 31 and a tailstock 32 for holding the work W, which are disposed on both sides of the base 1 in the X-axis direction with the tool unit 2 interposed therebetween. .

  First, the work support unit 3 will be described. As shown in FIGS. 1 to 3, the work supporting unit 3 includes the above-described spindle stock 31 and the tailstock 32, which move close to and separate from each other in the X-axis direction to rotate the work W. It is designed to be held freely.

  Next, the spindle stock 31 will be described. The headstock 31 is disposed on a first support frame 311 disposed on the left side on the base 1 with the tool unit 2 interposed therebetween. On the first support frame 311, a first support block 313 supported by both rails 312 and movable in the Y-axis direction is disposed. A nut (not shown) is connected to the lower surface of the first support block 313, and a ball screw (not shown) extending parallel to the rail 312 is engaged with the nut. A motor 316 is coupled to the ball screw. Therefore, when the ball screw is rotated by the motor 316, the first support block 313 is moved along the inclined surface 310 of the first support frame 311 in the Y-axis direction.

  A pair of rails 317 extending in parallel to the X-axis direction is disposed on the upper surface of the first support block 313, and the headstock 31 can move in the X-axis direction along these rails. A nut (not shown) is connected to the lower surface of the headstock 31 and a ball screw (not shown) extending parallel to the rail 317 is screwed into the nut. A motor 3190 is connected to this ball screw. Therefore, when the ball screw is rotated by the motor 3190, the spindle stock 31 moves on the first support block 313 in the X-axis direction.

  A shaft member 3101 which protrudes in the X direction and supports the work W is rotatably provided at the tip of the spindle stock 31 and is rotationally driven by a built-in motor (not shown).

  Next, the tailstock 32 will be described. The tailstock 32 is also configured similarly to the headstock 31. That is, the tailstock 32 is disposed on the second support frame 321 disposed on the right side on the base 1 with the tool unit 2 interposed therebetween. On the second support frame 321, a second support block 323 supported by both rails 322 and movable in the Y-axis direction is disposed. A nut (not shown) is connected to the lower surface of the second support block 323, and a ball screw (not shown) extending parallel to the rail 322 is engaged with the nut. A motor 326 is connected to this ball screw. Therefore, when the ball screw is rotated by the motor 326, the second support block 323 moves in the Y-axis direction along the inclined surface 320 of the second support frame 321.

  A pair of rails 327 extending in parallel to the X-axis direction is disposed on the upper surface of the second support block 323, and the tailstock 32 can move in the X-axis direction along the rails 327. A nut (not shown) is connected to the lower surface of the tailstock 32 and a ball screw (not shown) extending parallel to the rail 327 is engaged with the nut. A motor 3290 is connected to this ball screw. Therefore, when the ball screw is rotated by the motor 3290, the tailstock 32 moves on the second support block 323 in the X-axis direction.

  In addition, a shaft member 3201 for supporting the work W is rotatably provided at the tip of the tailstock 32 so as to hold the work W with the shaft member 3101 of the headstock 31. . The headstock 31 and the tailstock 32 are controlled to move integrally in the X-axis direction and the Y-axis direction, and both move in the X-axis direction and the Y-axis direction while holding the work W And the work W is brought close to and separated from the tool of the tool unit 2.

  Next, the tool unit 2 will be described in detail with reference to FIGS. 4 and 5. 4 is a side view of the tool unit of FIG. 1, and FIG. 5 is a perspective view of the tool unit of FIG. As shown in FIGS. 4 and 5, the housing 21 of the tool unit 2 is formed in an annular shape, and can be moved in the Y-axis direction in order to form a cross angle with the work W and to apply crowning, And, it is rotatable around a rotation axis S which is inclined with the Y axis in the YZ plane. Therefore, the tool unit 2 includes the support 23 disposed on the base 1 and supporting the housing 21 described above. In addition, the housing 21 is rotatably supported by the support 23 at both ends of the above-described rotation axis S. That is, the first shaft end member 41 is attached to the front end side of the rotational shaft S of the housing 21 and the second shaft end member 42 is attached to the rear end side. The first and second shaft end members 41 and 42 are supported by the support 23. Hereinafter, the support 23 will be described in detail.

  As shown in FIG. 4, the support 23 is provided at a base 231 movable in the Y-axis direction on the base 1 and at the front end of the base 231 to support the first axial end member 41 of the housing 21. A first support portion 232 and a second support portion 233 provided at the rear end portion of the base portion 231 and supporting the second shaft end member 42 of the housing 21 are provided. The base portion 231 is, in a side view, a front end surface 2311 inclined upward, a central surface 2312 continuous with the front end surface 2311 in an arc shape, and a rear end of the central surface 2312 inclined upward It has a rear end face 2313, which are arranged in this order from the front to the rear. The inclination angle of the front end surface 2311 and the rear end surface 2313 is the same as the inclination surface of the workpiece support unit 3. In this configuration, the rear end face 2313 is at a position higher than the front end face 2311, the first support portion 232 is attached to the front end face 2311, and the second support portion 233 is attached to the rear end face 2313.

  The first shaft end member 41 of the housing 21 is rotatably supported by the first support portion 232, and the second shaft end member 42 is rotatably supported by the second support portion 233. Thereby, the housing 21 is rotatable around the rotation axis S extending at the inclination angle. The arc shape of the central surface 2312 is such that the housing 21 is along the outer peripheral surface.

  Next, a tool attachment structure and the like in the tool unit 2 including the housing 21 will be described with reference to FIGS. 6 and 7. 6 is a partial sectional view of the housing in FIG. 4, and FIG. 7 is a partial enlarged sectional view around the tool.

  As shown in FIGS. 6 and 7, the tool unit 2 has a generally annular housing 21 and a tool support 25 rotatably provided on the inner peripheral side of the housing 21 via a pair of bearings 241 and 242. And an internal gear-like tool 4 attached to the inner peripheral surface of the tool support 25. The tool unit 2 is also provided with a motor (not shown) for rotating the tool support 25 relative to the housing 21. Hereinafter, each member will be described in detail.

  The aforementioned pair of bearings 241 and 242 are attached at predetermined intervals in the axial direction on the inner peripheral surface of the central portion 2110 located near the axial center of the housing body 211. Each of the bearings 241 and 242 is a known one provided with an outer ring, an inner ring, and a rolling element (ball or roller) held therebetween.

  Next, a fixing mechanism for attaching the tool 4 to the tool support 25 will be described. As shown in FIGS. 6 and 7, on the inner peripheral surface of the support main body 251, a deformation member 502 formed in a cylindrical shape with a thin plate is attached over the entire circumference. The deformation member 502 is formed of, for example, a metal material having a thickness of 2.4 to 2.5 mm. Specifically, for example, it can be formed of a metal such as chromium mobriden steel.

  A shallow first concave portion (annular flow channel) 503 extending in a strip shape is formed on the inner peripheral surface of the support main body 251, and a deep second concave portion 504 is formed on both ends thereof. The depth of the first recess 503 can be, for example, 0.2 to 0.3 mm. The O-ring 505 is accommodated in the second recess 504. Thus, the first recess 503 is a space sealed between the deformation member 502 and the pair of O-rings 505.

  Further, as shown in FIG. 7, a communication passage 506 extending to the inside of the support main body 251 is formed in the first concave portion 503. More specifically, the communication passage 506 extends radially outward from the first recess 503, and then extends to the right in the axial direction and communicates with the housing portion 507 formed at the end portion 2511. The housing portion 507 is a cylindrical recess, and is open to the outside from the right end portion of the support main body 251. The port portion 7 for injecting the hydraulic oil into the first recess 503 is disposed in the housing portion 507. The port unit 7 will be described below with reference to FIGS. 8 and 9. 8 and 9 are enlarged cross-sectional views of the port portion.

  As shown in FIG. 8, the port portion 7 includes a cylindrical port main body 71 housed in the housing portion 507, a cylindrical movable member 72 housed inside the port main body 71, and the port member 7. And a plug member 73 inserted inside. The port main body 71 is fixed to the inner wall surface of the housing portion 507, and has a cylindrical space inside. The movable member 72 is movable in the axial direction of the port main body 71 while in contact with the inner wall surface of the port main body 71. In addition, the movable member 72 is axially urged to the outside of the support main body 251 by the spring member 74, and moves to the inside of the support main body 251 when pressed from the outside to the left in the axial direction. It has become.

  The plug member 73 has a rod-like main body 731 extending in the axial direction inside the movable member 72, and a distal end 732 attached to the tip of the main body 731; that is, the right end facing outward. Further, the left end portion of the main body portion 731 is fixed inside the port main body 71, and a gap is formed between the outer peripheral surface of the main body portion 731 and the inner peripheral surface of the port main body 71. Then, this gap is connected to the internal space of the housing portion 507 and the communication passage 506.

  The tip end portion 732 of the plug member 73 is formed in a cylindrical shape having a larger diameter than the main body portion 731, and when the movable member 72 is biased by the spring member 74 and positioned on the right, Engaged with the circumferential surface. That is, the movable member 72 and the tip end portion 732 are in close contact without a gap. Then, in this state, the hydraulic oil is filled over the port portion 7, the storage portion 507, the communication passage 506, and the first concave portion 503.

  In this state, when the movable member 72 is pressed from the outside, a gap is formed between the movable member 72 and the tip end portion 732 as shown in FIG. Since the gap is connected to the inside of the port main body 71, the outside and the inside of the port 7 communicate with each other, and the inside of the port 7 also communicates with the communication passage 506 through the housing 507. Thus, the hydraulic oil can be supplied to the first recess 503 from the outside via the port portion 7 (dotted line in FIG. 9) or the hydraulic oil can be discharged to the outside.

  Next, a supply unit for supplying the hydraulic oil to the port portion 7 will be described. As shown in FIG. 5, the supply unit 8 is attached to a flexible hose 82 connected via a relay member 81 from a hydraulic pressure generation unit (not shown) provided outside the gear processing apparatus, and to the tip of the hose 82. The fuel filler 83 is detachably attached to a holder 84 provided on the outer peripheral surface of the housing 21. The holder 84 is attached near the first shaft end member 41 on the outer peripheral surface of the housing 21.

  Further, a plate-like positioning member 85 is attached at a position corresponding to the port portion 7 on the end surface on the right side in the axial direction of the housing 21. The positioning member 85 extends radially inward from the end face of the housing 21, and a circular through hole 851 is formed at a position corresponding to the port portion 7. Then, the fuel filler 83 is fixed to the through hole 851 as described later.

  Next, the fuel filler 83 will be described with reference to FIGS. 10 to 12. FIG. 10 is a cross-sectional view of the vicinity of the fuel filler and the port portion, and FIGS. As shown in FIG. 10, the filler 83 includes a filler body 831 attached to the tip of the hose 82, and a pressing member 9 attached to the tip of the filler body 831. The fuel filler body 831 has an internal space 832 whose distal end is open to the outside, and the proximal end side of the internal space 832 communicates with the hose 82. When the hydraulic pressure generation unit (not shown) is manually operated, the hydraulic oil supplied from the hose 82 flows into the internal space 832. In addition, the above-described pressing member 9 is attached to the internal space 832 and protrudes to the outside. Further, an external thread 833 is formed on the outer peripheral surface of the fuel filler body 831 corresponding to the internal space 832. In addition, a wrench hole 834 into which a wrench can be inserted is provided at the rear end of the filler body 831, that is, at the end opposite to the internal space 832, and the filler body 831 is inserted by the wrench inserted therein. Can be rotated.

  As shown in FIG. 11, the pressing member 9 includes a cylindrical main body 91 and a closing member 92 disposed inside the main body 91. The main body portion 91 is fixed to the inner peripheral surface of the internal space 832, and the tip end portion thereof protrudes to the outside. In addition, the closing member 92 is inserted in the axial direction with respect to the main body 91, and is supported movably in the axial direction. The closing member 92 is urged toward the tip end of the main body 91 by a spring member 93. In this state, the outer peripheral surface of the tip of the closing member 92 and the inner peripheral surface of the tip of the main body 91 do not have a gap. It is in close contact. On the other hand, as shown in FIG. 12, when the closing member 92 is pressed from the distal end side of the main body 91, the closing member 92 resists the biasing force of the spring member 93 and the proximal end side of the main body 91 (FIG. Move to the right of Thus, a gap is formed between the closing member 92 and the inner peripheral surface of the main body 91, and the internal space 832 of the filler main body 831, the internal space of the main body 91, and the external communicate with each other. Oil is discharged from the pressing member 9 to the outside (dotted line in FIG. 12). In the state where the pressing member 9 is closed, the hydraulic oil from the hose 82 is filled in the internal space 832 and the pressing member 9, and the pressure is applied. Therefore, when the pressing member 9 is opened, the hydraulic fluid is discharged from the pressing member 9 to the outside.

  Subsequently, attachment of the tool 4 by the fixing mechanism will be described with reference to FIG. FIG. 13 is a cross-sectional view for explaining the refueling of the hydraulic oil by the filler. First, the tool 4 is attached to the inner circumferential surface of the deformation member 502. Thereby, the inner peripheral surface of the deformation member 502 and the outer peripheral surface of the tool 4 are in close contact with each other. Next, the fuel filler 83 is removed from the holder 84 and the fuel filler body 831 is screwed into the through hole 851 of the positioning member 85. That is, a wrench is inserted into the wrench hole 834 of the filler body 831, and the male screw 833 on the outer peripheral surface of the filler body 831 is screwed into the female screw of the through hole 851.

  As a result, as shown in FIG. 13, the filler body 831 advances toward the port 7, and the body 91 of the pressing member 9 presses the movable member 72 of the port 7. As a result, the movable member 72 is pushed into the inside of the port portion 7 as shown in FIG. On the other hand, the closing member 92 of the pressing member 9 is pushed by the plug member 73 of the port portion 7. As a result, the internal space 832 of the filler main body 831, the pressing member 9, the port portion 7, and the housing portion 507 communicate with each other. Then, when the hydraulic pressure generation unit (not shown) is manually operated in the hydraulic fluid discharge direction, the hydraulic fluid of the filler 83 applies pressure to the hydraulic fluid in the support main body 251. Accordingly, the hydraulic oil presses the deformation member 502 through the first recess 503. Thus, the tool 4 is fixed to the deforming member 502 in order to press the outer peripheral surface of the tool 4.

  Subsequently, when the fueling tool main body 831 is unscrewed from the positioning member 85 and the fueling tool main body 831 is moved in the direction away from the port portion 7, the push of the movable member 72 is released and the movable member 72 is externally moved. Moving. As a result, the port portion 7 is closed, and the flow path of the hydraulic oil following the first concave portion 503 is shut off from the outside and sealed. On the other hand, the closing member 92 of the pressing member 9 is also released from the pressing and moves to the tip side of the pressing member 9. Thereby, the pressing member 9 is closed, and the supply of the hydraulic oil from the fuel filler body 831 to the outside is stopped. Thus, when the oil filler 83 removed from the positioning member 85 is attached again to the holder 84, the attachment of the tool 4 is completed, and the work W can be processed.

  On the other hand, in order to remove the tool 4 at the time of maintenance or replacement, after the fueling tool 83 is attached to the positioning member 85 and the port 7 and the fueling tool main body 831 are communicated, a hydraulic pressure generating unit (not shown) is manually operated. Operate in the direction to drain the hydraulic oil. As a result, the internal pressure of the hydraulic fluid in the first recess 503 is reduced, and the pressing of the deformable member 502 by the hydraulic fluid is released. Therefore, the tool 4 can be removed in this state.

  Next, the operation of the gear machining device configured as described above will be described. First, as shown in FIG. 2, after the work W is attached to the shaft member 3101 of the headstock 31, the headstock 31 and the tailstock 32 are brought close to each other, and the work W is clamped inside the housing 21. In this state, the shaft member 3101 of the headstock 31 is rotated together with the work W. At the same time, a motor (not shown) is driven to rotate the tool 4 of the tool unit 2 in synchronization with the workpiece W. Subsequently, the headstock 31 and the tailstock 32 are integrally moved in the Y-axis direction to bring the workpiece W close to the tool 4. Then, the work W is processed by meshing the work W with the tool 4 and bringing them into contact with each other. In addition, the housing 21 is moved in the Y-axis direction together with the support 23 as needed, and the workpiece W is crowned. At the same time as such a processing operation, cutting oil is injected to the meshing portion between the tool 4 and the work W to cool, lubricate, and remove chips from the processing site. Thus, after processing for a predetermined time, the drive of each motor is stopped and the processed work W is removed.

  As described above, in the present embodiment, the tool 4 is fixed by the above-described fixing mechanism. The deformation member 502 for fixing the tool 4 is pressed by the hydraulic oil of the first recess 503 formed in the support main body 251 to fix the tool 4. Here, the first concave portion 503 communicates with the housing portion 507 opened to the outside through the communication passage 506, and the port portion 7 is disposed in the housing portion 507. Therefore, if the hydraulic fluid is supplied from the port portion 7, the pressure of the hydraulic fluid in the first recess 503 can be increased, so that the tool 4 can be pressed by the deformation member 502. That is, since the deformation member 502 can be deformed by one operation, the mounting operation of the tool 4 can be easily performed.

  In addition, when using the above-described port 7 and the pressing member 9 to supply the hydraulic fluid, the port 7 and the pressing member 9 are opened only by pressing the port 7 with the pressing member 9, and the oiling is performed. Since the working oil can be supplied from the tool 83 to the inside of the tool support 25, the operation can be performed more easily.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, A various change is possible unless it deviates from the meaning. The following modifications can be combined as appropriate.

  For example, in the above-mentioned embodiment, although the port part 7 is provided in one place, it can also be provided in two or more places. That is, it is possible to provide the housing portions 507 that are open to the outside through the communication path 506 at a plurality of locations, and to provide the port portion 7 in each housing portion 507. In addition, when providing multiple accommodating parts 507, it is preferable to provide in the circumferential direction of the tool support body 25 at equal intervals.

  Although the hydraulic oil is supplied by the manual operation of the operator in the above embodiment, this can also be performed automatically. This will be described with reference to FIGS. 14 to 17. FIG. 14 is a front view showing the positioning member in the retracted position, FIG. 15 is a front view showing the positioning member in the operating position, and FIGS. 16 and 17 are cross-sectional views around the filler and the port portion . However, in FIG.14 and FIG.15, the fuel filler is abbreviate | omitted and shown.

  First, the moving mechanism of the positioning member will be described with reference to FIGS. 14 and 15. As shown in FIG. 14, in this example, a motor 86 is attached to the outer peripheral surface of the housing 21, and a cylindrical worm 87 is attached to the tip of the rotation shaft of the motor 86. A worm wheel 88 meshes with the cylindrical worm 87, and the worm wheel 88 is rotated by the rotation of the cylindrical worm 87. The worm wheel 88 is adapted to rotate about an axis of rotation extending in the axial direction of the housing 21. A gear 881 is attached to the rotation shaft of the worm wheel 88 and rotates together with the worm wheel 88.

  On the other hand, as shown in FIGS. 14 and 16, the positioning member 80 is attached to the end face in the axial direction of the housing 21 and extends along the end face. A second portion 802 extending in the direction and a third portion 803 extending in parallel to the first portion 801 from the tip of the second portion 802 are included. The above-described fuel filler 83 is attached to the third portion 803.

  The first portion 801 of the positioning member 80 is pivotally fixed to the end face of the housing 21 in the axial direction, and the tip end portion to which the second portion 802 is attached with the center of oscillation interposed therebetween, and the opposite thereof It has a proximal end 804 on the side. The base end portion 804 of the first portion 801 is formed in an arc shape in which a tooth meshing with the gear 881 is formed. Therefore, when the motor 86 rotates, the positioning member 80 swings around the fulcrum pin 805. That is, as shown in FIG. 14, as shown in FIG. 15, the withdrawal position where the third portion 803 to which the fuel filler 83 is attached is retracted radially outward from the tool support 25, and as shown in FIG. It swings between the part 7 and the opposite working position. FIG. 16 shows a state immediately after the positioning member 80 has moved from the retreat position to the working position, but in order to prevent the filler 83 from interfering with the tool support 25 in the process from FIG. 14 to FIG. The portion 802 axially extends away from the housing 21. The motor 86, the cylindrical worm 87, the worm wheel 88, the gear 881, and the teeth of the first portion 801 constitute a first drive unit according to the present invention.

  In addition, the fuel filler 83 is configured as follows. As shown in FIG. 16, a double acting hydraulic cylinder 838 (second drive unit) is attached to the rear end of the filler 83, and the filler 83 attached to the third portion 803 is axially oriented. It can reciprocate. That is, when the hydraulic cylinder 838 is driven, as shown in FIG. 17, the fuel filler 83 moves in the axial direction, and the pressing member 9 can press the port portion 7.

  With the above configuration, when mounting the tool 4, the motor 86 is driven to swing the positioning member 80 and move the fuel filler 83 from the retracted position to the operating position. Subsequently, the hydraulic cylinder 838 is driven to advance the filler 83 to the port 7 side, and the port 7 is pressed by the pressing member 9. As a result, the fuel filler 83 and the port portion 7 communicate with each other, and the hydraulic oil can be supplied. As described above, by moving the fuel filler 83 to the retracted position by motor operation, there is no risk of interference when the tailstock 32 approaches the housing 21 during processing of the workpiece W. The restraint and release of the tool 4 with respect to the housing 21 can be automated. The mechanism for moving the fuel filler 83 from the retracted position to the operation position and the mechanism for advancing and retracting the fuel filler 83 in the axial direction may be other than those described above, and various configurations are possible.

  The port portion 7 described above is configured to open when pressed from the outside, but this is an example and is not particularly limited. That is, as long as hydraulic oil is supplied to the first recess 503 from the outside, the configuration of the port portion 7 is not particularly limited. In addition, the position of the port portion 7 is not particularly limited, and may be other than the end face in the axial direction of the tool support 25, as long as the hydraulic oil can be supplied from the outside. Similarly, the configuration of the fuel filler 83 is not particularly limited as long as the hydraulic oil can be supplied to the port portion 7.

  The configuration of the communication passage in the tool support is not particularly limited, as long as it is a flow passage that communicates from the port portion to the first recess.

  In the above embodiment, in the work support unit 3, the work W is held by the headstock 31 and the tailstock 32. However, the work W may be supported by only the workhead 31. .

  The configuration of the tool unit described in the above embodiment is an example, and at least the tool fixing mechanism as described above may be provided as long as a tool support for supporting the internal gear-like tool and a housing are provided. The configuration of can be changed as appropriate. For example, the tool may be rotated by a drive other than the motor.

  Further, as long as at least one of the tool unit 2 and the work support unit 3 is moved and the gear can be machined, the moving mechanism is not particularly limited.

4 tool 502 deformation member 506 communication passage 7 port portion 9 fuel filler

Claims (6)

With an annular housing,
An annular tool support rotatably disposed on the inner circumferential side of the housing;
An internal gear-shaped tool attached to the inner peripheral side of the tool support and meshing with a processed gear;
A securing mechanism for securing the tool to the tool support;
Equipped with
The fixing mechanism is
At least one port provided on the tool support for inflow of oil from the outside and discharge of oil from the outside;
An annular flow passage formed along the circumferential direction on the inner circumferential surface of the tool support and in communication with the port portion;
A deformation configured to be in close contact with the inner circumferential surface of the tool support so as to close the annular flow passage and to press the outer circumferential surface of the tool by oil inflow into the annular flow passage. Members,
Gear processing equipment.   When the port portion is pressed from the outside, the port portion opens to connect the annular flow path with the outside, and when the pressure from the outside is released, the port portion closes the communication between the annular flow path and the outside. The gear machining device according to claim 1, wherein the gear machining device is configured to be in a state. A pressing member configured to be able to press the port portion;
A flexible hose connected to the pressing member for supplying oil from the pressing member to the port portion and discharging oil from the pressing member;
The gear processing apparatus according to claim 1, further comprising:   The gear machining device according to claim 3, further comprising: a positioning member for detachably fixing the pressing member and positioning the pressing member at a position opposite to the port portion. A pressing member configured to be able to press the port portion;
The pressing member is fixed so as to be capable of reciprocating in the axial direction of the tool support, and the pressing member is moved to an operation position facing the port portion and a withdrawal position radially outward of the port portion. A positioning member configured as
A first drive unit for reciprocating the positioning member between the operating position and the retracted position;
A second drive unit configured to reciprocate the pressing member in the operating position in the axial direction;
The gear processing apparatus according to claim 1, further comprising:   The gear processing apparatus according to any one of claims 1 to 5, wherein the port portion is provided on one end surface of the tool support in the axial direction.

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