A gear grinding machine tailstock

Abstract

The present application discloses a gear grinding machine tailstock, which relates to the field of machining technology, and includes a support plate, a mounting seat, a sliding seat, a top, a cylinder and a connecting plate, wherein the mounting seat is fixedly arranged on the support plate, the sliding seat is slidably arranged in the mounting seat, the top is arranged at one end of the sliding seat, the cylinder is fixedly arranged in the mounting seat, the connecting plate is fixedly connected to the driving end of the cylinder, and the end of the sliding seat away from the top is connected to the connecting plate. The present application utilizes the cylinder to drive the connecting plate to move, the connecting plate drives the sliding seat to move in the mounting seat, the sliding seat then drives the ejector pin to move, the top moves quickly and tightens the workpiece, and the top tightening force can be accurately adjusted by adjusting the air pressure of the cylinder, so that the top can move quickly to tighten the workpiece while the top tightening force can be accurately adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of machining, and in particular to a tailstock of a gear grinding machine. Background Art

[0002] The tailstock is an auxiliary device in machining, usually installed on a machine tool, to support and fix one end of the workpiece. The tailstock drives the center to move through a servo motor or hydraulic cylinder, and the center moves and presses against the workpiece. When the workpiece machining accuracy requirements are high, different types of workpieces require different clamping forces.

[0003] When a servo motor is used to drive the movement of the top, the movement response speed of the top is faster, but the clamping force when the top is pressed against the workpiece is difficult to adjust; when a hydraulic cylinder is used to drive the movement of the top, the movement response speed of the top is slower, and the clamping force when the top is pressed against the workpiece is larger, making it difficult to achieve a smaller clamping force. Summary of the invention

[0004] In order to facilitate rapid movement of the center and precise adjustment of the tightening force of the center, the present application provides a tailstock of a gear grinding machine.

[0005] The present application provides a gear grinding machine tailstock adopting the following technical solution:

[0006] A gear grinding machine tailstock comprises a support plate, a mounting seat, a sliding seat, a center, a cylinder and a connecting plate, wherein the mounting seat is fixedly arranged on the support plate, the sliding seat is slidably arranged in the mounting seat, the center is arranged at one end of the sliding seat, the cylinder is fixedly arranged in the mounting seat, the connecting plate is fixedly connected to the driving end of the cylinder, and the end of the sliding seat away from the center is connected to the connecting plate.

[0007] By adopting the above technical solution, the cylinder drives the connecting plate to move forward, the connecting plate drives the sliding seat to move forward in the mounting seat, and the sliding seat drives the top to move forward, thereby facilitating clamping of the workpiece. The cylinder then drives the sliding seat to move reversely through the connecting plate, and the sliding seat drives the top to move reversely. The top moves quickly and tightens the workpiece. By adjusting the air pressure of the cylinder, the tightening force of the top can be accurately adjusted, so that the top can move quickly to tighten the workpiece while the tightening force of the top can be accurately adjusted.

[0008] Preferably, the sliding seat is fixedly provided with guide rails on both sides perpendicular to its own moving direction, and tracks are provided on opposite sides of the sliding seat in the mounting seat, and the two guide rails are slidably arranged in the two tracks along the moving direction of the sliding seat.

[0009] By adopting the above technical solution, when the cylinder drives the sliding seat to move through the connecting plate, the sliding seat drives the two guide rails to slide in the two tracks. The guide rails cooperate with the tracks to guide the sliding of the sliding seat, thereby making the movement of the sliding seat more stable.

[0010] Preferably, a connecting seat is provided on the mounting seat, and an elastic member is provided on the connecting seat, and two ends of the elastic member respectively abut against the connecting seat and the side wall of the connecting plate away from the sliding seat.

[0011] By adopting the above technical solution, when the cylinder drives the sliding seat to move forward through the connecting plate, the connecting plate moves to squeeze the elastic part. When the cylinder drives the sliding seat to move reversely through the connecting plate, the elastic part releases elastic potential energy and pushes the connecting plate to move reversely, thereby facilitating the rapid movement of the top and tightening the workpiece.

[0012] Preferably, a guide flange is provided on the connecting seat, and one end of the elastic member away from the connecting plate is located in the guide flange.

[0013] By adopting the above technical solution, when the connecting plate squeezes the elastic member, the elastic member shrinks and deforms into the guide flange, and the guide flange guides the elastic member, so that the elastic member is more stable when shrinking and deforming.

[0014] Preferably, a sliding groove is provided in the connecting plate, a top column is slidably arranged in the sliding groove of the connecting plate, an end of the top column passes through the connecting plate and is fixedly connected to the end of the sliding seat away from the top, an oil storage chamber connected to the sliding groove is provided in the connecting plate, a first piston is slidably arranged in the oil storage chamber, one end of the first piston is located in the sliding groove, and the other end is located in the oil storage chamber, and oil pipes connected to the oil storage chamber are arranged on the opposite side walls of the connecting plate; the mounting seat is located on the side of the two tracks away from each other, and a lifting plate is slidably arranged in a direction perpendicular to the track, and the tracks The mounting seat is fixed on the side wall of the lifting plate close to the sliding seat, and a plurality of pressure chambers are provided in the mounting seat on the side away from each other of the two lifting plates, a second piston is slidably provided in the pressure chamber, a push column is provided at the end of the second piston close to the lifting plate, and the end of the push column away from the second piston moves and abuts the lifting plate, and two oil delivery channels connecting the plurality of pressure chambers are provided in the mounting seat, an end of the oil delivery pipe away from the connecting plate is connected to the mounting seat and is connected to an end of the oil delivery channel away from the pressure chamber, and hydraulic oil is stored in the oil storage chamber, the oil delivery pipe, the oil delivery channel and the pressure chamber.

[0015] By adopting the above technical solution, there will be a small gap between the track and the guide rail. During the rotation processing of the workpiece, the workpiece will be subjected to forces in directions other than the axis direction of the top. At this time, the gap between the track and the guide rail will cause the sliding seat to shake slightly, thereby affecting the processing accuracy of the workpiece. When the cylinder drives the connecting plate to move, the connecting plate drives the sliding seat to move through the top column. When the sliding seat drives the top to press the workpiece, the top column pushes the first piston to move toward the oil storage chamber. The first piston squeezes the hydraulic oil into the pressure chamber through the oil pipe and the oil channel. The hydraulic oil then pushes the second piston to move. The second piston drives the push column to move against the lifting plate. The lifting plate drives the track and the guide rail to press against each other, reducing the gap between the track and the guide rail, thereby increasing the processing accuracy of the workpiece.

[0016] Preferably, a pull ring is provided at the end of the push column close to the first piston, and the pull ring is slidably arranged in the sliding groove along the sliding direction of the first piston, and a retaining ring is fixedly provided at the end of the first piston close to the push column, and a first elastic return member is sleeved on one end of the first piston close to the retaining ring, one end of the first elastic return member abuts against the side wall of the retaining ring away from the push column, and the other end abuts against the inner wall of the connecting plate located in the sliding groove, the diameter of the push column is smaller than the diameter of the second piston, and a second elastic return member is provided on the mounting seat located in the pressure chamber, and the second elastic return member is sleeved on the push column, one end of the second elastic return member abuts against the side wall of the second piston close to the push column, and the other end abuts against the inner wall of the mounting seat located in the pressure chamber.

[0017] By adopting the above technical solution, in the process of the sliding seat driving the ejector pin to press the workpiece tightly, the ejector column pushes the first piston to move, the first piston drives the retaining ring to move, the retaining ring moves to squeeze the first elastic reset member and elastically shrink it, the second piston moves to squeeze the second elastic reset member and elastically shrink it, when the workpiece is processed, the cylinder drives the connecting plate to move in the opposite direction, and in the process of the connecting plate moving, the first elastic reset member drives the first piston to move and reset through the retaining ring, the second elastic reset member drives the second piston to move and reset, the second piston drives the push column to move and separate from the lifting plate, thereby releasing the tightness on the lifting plate, during this process, the connecting plate moves, so that the pull ring moves in the sliding groove, and the sliding seat does not move at this time, and when the pull ring moves to the end of the sliding groove, the connecting plate pulls the push rod to move through the pull ring, and the push rod drives the ejector pin to move and separate from the workpiece through the sliding seat.

[0018] Preferably, a guide groove connected to the pressure chamber is provided in the mounting seat, and the guide groove is located on a side of the pressure chamber close to the lifting plate. A plurality of guide columns are fixedly provided on the side wall of the lifting plate away from the track. The guide columns are slidably provided in the guide groove along the moving direction of the lifting plate, and one end of the push column away from the second piston extends into the guide groove and moves to abut against the end of the guide column.

[0019] By adopting the above technical solution, the second piston drives the push column to move in the guide groove, the push column moves to abut the end of the guide column and pushes the guide column to move, the guide column then drives the lifting plate to move, the guide column moves in the guide groove, thereby guiding the movement of the lifting plate, making the movement of the lifting plate more stable.

[0020] Preferably, a trigger rod is provided at one end of the push column away from the second piston for sliding along its own axial direction, and the end of the trigger rod away from the second piston extends out of the push column, and a plurality of positioning blocks are provided in the push column for sliding along its own circumferential direction at equal intervals, a plurality of wedge-shaped grooves are provided on the side wall of the trigger rod, a wedge-shaped surface is formed on the end of the positioning block close to the trigger rod, and the wedge-shaped surface of the positioning block abuts and fits the wedge-shaped groove of the trigger rod, and when the trigger rod moves in the direction close to the second piston, the trigger rod pushes the positioning block to move away from itself through the wedge-shaped groove and the wedge-shaped surface, and the end of the positioning block away from the trigger rod moves and presses against the inner wall of the guide groove of the mounting seat; a fixed rack is provided on the end wall of the second piston close to the push column, and a moving rack is provided on the side wall of the trigger rod, and a transmission gear is rotatably provided in the push column, and the transmission gear meshes the moving rack with the fixed rack.

[0021] When the second piston moves in the direction away from the guide column, the second piston drives the fixed rack to move, and the fixed rack drives the trigger rod to move through the transmission gear and the movable rack, so that the wedge surface is separated from the wedge groove, thereby releasing the lock on the push column.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The cylinder drives the connecting plate to move, and the connecting plate drives the sliding seat to move in the mounting seat, and the sliding seat drives the ejector pin to move, and the ejector pin moves quickly and tightens the workpiece. By adjusting the air pressure of the cylinder, the tightening force of the ejector pin can be accurately adjusted, so that the ejector pin can move quickly to tighten the workpiece and the tightening force of the ejector pin can be accurately adjusted;

[0024] 2. With the help of guide rails and tracks, when the cylinder drives the sliding seat to move through the connecting plate, the sliding seat drives the two guide rails to slide in the two tracks. The cooperation between the guide rails and the tracks can guide the sliding of the sliding seat, thereby making the movement of the sliding seat more stable;

[0025] 3. Through the first piston and the second piston, when the sliding seat drives the top to press the workpiece, the push column pushes the first piston to move, and the first piston squeezes the hydraulic oil into the pressure chamber through the oil pipe and the oil channel. The hydraulic oil then pushes the second piston to move, and the second piston drives the push column to move and press against the lifting plate. The lifting plate drives the track and the guide rail to press against each other, reducing the gap between the track and the guide rail, thereby increasing the processing accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the tailstock of the gear grinding machine in Example 1 of the present application;

[0027] Figure 2 It is a partial structural schematic diagram of the tailstock of the gear grinding machine in Example 1 of the present application;

[0028] Figure 3 This is a reverse schematic diagram of a portion of the structure of the tailstock of the gear grinding machine in Example 1 of the present application;

[0029] Figure 4 This is a partial structural schematic diagram of the tailstock of the gear grinding machine in Example 2 of the present application;

[0030] Figure 5 This is a partial structural cross-sectional view of the tailstock of the gear grinding machine in Example 2 of the present application, in order to highlight the first piston;

[0031] Figure 6 For this application Figure 5 The enlarged schematic diagram at A in the middle;

[0032] Figure 7 This is a partial structural cross-sectional view of the tailstock of the gear grinding machine in Example 2 of the present application, in order to highlight the second piston;

[0033] Figure 8 For this application Figure 7 The enlarged schematic diagram of point B in the middle;

[0034] Fig. 9 For this application Figure 8 Enlarged schematic diagram at point C in the middle.

[0035] 1. The support plate; 2. The mounting seat; 3. The sliding seat; 4. The top; 5. The cylinder; 6. The connecting plate; 7. The guide rail; 8. The track; 9. The connecting seat; 10. The elastic member; 11. The guide flange; 12. The sliding groove; 13. The top column; 14. The oil storage chamber; 15. The first piston; 16. The oil delivery pipe; 17. The lifting plate; 18. The pressure chamber; 19. The second piston; 20. The push column; 21. The oil delivery channel; 22. The pull ring; 23. The retaining ring; 24. The first elastic reset member; 25. The second elastic reset member; 26. The guide groove; 27. The guide column; 28. The trigger rod; 29. ​​The positioning block; 30. The wedge groove; 32. The slide rail; 33. The servo motor; 36. The oil delivery hole; 37. The slide groove; 38. The third elastic reset member; 39. The fixed rack; 40. The transmission gear; 41. The movable rack. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-Figure 9 This application is described in further detail.

[0037] The embodiment of the present application discloses a tailstock of a gear grinding machine.

[0038] Embodiment 1:

[0039] Reference Figure 1 A gear grinding machine tailstock includes a support plate 1, a slide rail 32, a servo motor 33, a mounting seat 2, a sliding seat 3, a top 4, a cylinder 5 and a connecting plate 6. The slide rail 32 and the servo motor 33 are both mounted on a machine tool. The support plate 1 is slidably mounted on the slide rail 32. A lead screw is mounted on the driving end of the servo motor 33. The lead screw thread passes through the support plate 1. The servo motor 33 can drive the support plate 1 to slide back and forth on the slide rail 32 through the lead screw.

[0040] Reference Figure 2 and Figure 3 The mounting seat 2 is fixedly mounted on the top wall of the support plate 1, the sliding seat 3 is slidably mounted in the mounting seat 2 along the sliding direction of the support plate 1, and the top 4 is mounted at one end of the sliding direction of the sliding seat 3. Guide rails 7 are fixedly mounted on the upper and lower side walls of the sliding seat 3, and rails 8 are fixedly mounted on the upper and lower sides of the mounting seat 2 located on the sliding seat 3, and the two guide rails 7 are slidably mounted on the two rails 8 along the moving direction of the sliding seat 3.

[0041] The cylinder 5 is fixedly mounted in the mounting seat 2, and a connecting seat 9 is fixedly mounted on the side wall of the mounting seat 2. The driving end of the cylinder 5 passes through the mounting seat 2 and extends into the connecting seat 9. One end of the connecting plate 6 is fixedly connected to the driving end of the cylinder 5, and the other end of the connecting plate 6 is fixedly connected to the end of the sliding seat 3 away from the top 4. A guide flange 11 is fixedly mounted on the side wall of the connecting seat 9 away from the mounting seat 2, and an elastic member 10 is installed in the guide flange 11. The end of the elastic member 10 away from the guide flange 11 abuts against the connecting plate 6. In the present application, the elastic member 10 can be selected as a spring.

[0042] The servo motor 33 drives the support plate 1 to move to the specified position through the lead screw, and the cylinder 5 drives the connecting plate 6 to move forward, and the connecting plate 6 moves away from the ejector pin. The connecting plate 6 squeezes the elastic member 10 into the guide flange 11, and the connecting plate 6 drives the ejector pin to move forward through the sliding seat 3, so as to facilitate the clamping of the workpiece. The cylinder 5 then drives the connecting plate 6 to move in the opposite direction, and the connecting plate 6 drives the ejector pin to move in the opposite direction through the sliding seat 3. At the same time, the elastic member 10 releases its elastic potential energy and pushes the ejector pin to move in the opposite direction through the connecting plate 6, so that the ejector pin moves quickly and tightens the workpiece. By adjusting the air pressure of the cylinder 5, the tightening force of the ejector pin 4 can be accurately adjusted, so that the ejector pin 4 can move quickly to tighten the workpiece and the tightening force of the ejector pin 4 can be accurately adjusted.

[0043] The implementation principle of the tailstock of a gear grinding machine in Example 1 of the present application is: the cylinder 5 is used to drive the connecting plate 6 to move, the connecting plate 6 drives the sliding seat 3 to move in the mounting seat 2, the sliding seat 3 then drives the ejector pin to move, the ejector pin 4 moves quickly and tightens the workpiece, and by adjusting the air pressure of the cylinder 5, the tightening force of the ejector pin 4 can be accurately adjusted, so that the ejector pin 4 can move quickly to tighten the workpiece while the tightening force of the ejector pin 4 can be accurately adjusted.

[0044] Embodiment 2:

[0045] Reference Figure 4 , Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that a sliding groove 12 is opened in the connecting plate 6, and a push column 13 is fixedly installed at the end of the sliding seat 3 away from the ejector pin. The end of the push column 13 away from the sliding seat 3 passes through the connecting plate 6 and extends into the sliding groove 12. A pull ring 22 is fixedly installed on the outer peripheral side of the end of the push column 13 away from the sliding seat 3, and the pull ring 22 is slidably installed in the sliding groove 12 along the sliding direction of the sliding seat 3.

[0046] An oil storage chamber 14 connected to the sliding groove 12 is provided in the connecting plate 6 on the side of the sliding groove 12 away from the sliding seat 3. A first piston 15 is slidably installed in the connecting plate 6 in the oil storage chamber 14. One end of the first piston 15 is located in the oil storage chamber 14, and the other end is located in the sliding groove 12. A retaining ring 23 is fixedly installed on the outer peripheral side of one end of the first piston 15 close to the top column 13. A first elastic reset member 24 is sleeved on the end of the first piston 15 located in the sliding groove 12. The two ends of the first elastic reset member 24 respectively abut the inner wall of the sliding groove 12 and the retaining ring 23. In the present application, the first elastic reset member 24 can be selected as a spring.

[0047] Two oil delivery holes 36 are provided in the connecting plate 6 and communicate with the oil storage chamber 14. An oil delivery pipe 16 is installed on the upper and lower side walls of the connecting plate 6. The oil delivery pipe 16 communicates with the oil storage chamber 14 through the oil delivery holes 36, and one end of the oil delivery pipe 16 away from the connecting plate 6 is connected to the mounting seat 2. In the present application, the oil delivery pipe 16 can be selected as a hose.

[0048] Reference Figure 7 , Figure 8 and Fig. 9 Two lifting plates 17 are installed on the side of the mounting seat 2 where the two rails 8 are away from each other. The lifting plates 17 are parallel to the rails 8, and the two rails 8 are fixedly installed on the side walls of the two lifting plates 17 that are close to each other. Two guide posts 27 are fixedly installed at equal intervals along the length direction of the two lifting plates 17 away from each other, and the guide posts 27 are perpendicular to the lifting plates 17. Two guide grooves 26 are provided on the side of the mounting seat 2 where the two lifting plates 17 are away from each other, and the guide posts 27 are adapted to slide and plug into the guide grooves 26 along the sliding direction of the vertical guide rail 7.

[0049] A pressure chamber 18 connected to the guide groove 26 is provided in the mounting seat 2 on the side of the guide groove 26 away from the sliding seat 3. Two oil delivery channels 21 are provided in the mounting seat 2. One end of each oil delivery channel 21 is connected to an oil delivery pipe 16, and the other end is connected to two pressure chambers 18. A second piston 19 is slidably installed in each pressure chamber 18 in the mounting seat 2 along the moving direction of the lifting plate 17. A push column 20 is installed at one end of the second piston 19 close to the lifting plate 17. The diameter of the push column 20 is smaller than that of the second piston 19, and the end of the push column 20 away from the second piston 19 is slidably installed in the guide groove 26.

[0050] One end of the push column 20 close to the second piston 19 is slidably installed in the pressure chamber 18, and a second elastic return member 25 is sleeved on one end of the push column 20 located in the pressure chamber 18. In the present application, the second elastic return member 25 can be selected as a spring, and one end of the second elastic return member 25 abuts against the inner wall of the pressure chamber 18, and the other end abuts against the end wall of the second piston 19 close to the push column 20.

[0051] Reference Figure 4 , Figure 6 and Figure 8 The oil storage chamber 14, the first piston 15, the oil delivery hole 36, the oil delivery pipe 16, the oil delivery channel 21, the pressure chamber 18 and the second piston 19 form a closed chamber, and hydraulic oil is stored in the closed chamber. When the cylinder 5 drives the connecting plate 6 to move forward, the connecting plate 6 drives the sliding seat 3 to move forward through the sliding groove 12, the pull ring 22 and the top column 13. After the workpiece is clamped, the cylinder 5 drives the connecting plate 6 to move in the reverse direction, and the connecting plate 6 drives the sliding seat 3 to move in the reverse direction through the sliding groove 12 and the top column 13.

[0052] When the ejector pin contacts the workpiece, the sliding seat 3 cannot move further. At this time, the cylinder 5 drives the connecting plate 6 to continue to move in the opposite direction. The ejector column 13 on the sliding seat 3 drives the first piston 15 to slide into the oil storage chamber 14. The first piston 15 drives the retaining ring 23 to move and squeeze the first elastic reset member 24. The first piston 15 delivers the hydraulic oil in the oil storage chamber 14 to the four pressure chambers 18 through the two oil delivery holes 36, the oil delivery pipe 16 and the oil delivery channel 21. The hydraulic oil drives the four second pistons 19 to move in the pressure chamber 18 toward the lifting plate 17. The second pistons 19 move and squeeze the second elastic reset member 25.

[0053] The second piston 19 drives the push column 20 to move in the guide groove 26, and the push column 20 moves to press against the guide column 27. The four guide columns 27 drive the two lifting plates 17 to move toward the sliding seat 3. The two lifting plates 17 drive the two tracks 8 to clamp the two guide rails 7, reducing the gap between the tracks 8 and the guide rails 7, making it less likely for the sliding seat 3 to vibrate slightly during the workpiece processing, thereby increasing the processing accuracy of the workpiece.

[0054] When the workpiece is processed and the cylinder 5 drives the connecting plate 6 to move forward, the connecting plate 6 will first move a short distance. At this time, the pull ring 22 slides in the sliding groove 12, so it will not drive the sliding seat 3 to slide through the ejector 13. During the movement of the connecting plate 6 for a short distance, the first elastic reset member 24 drives the first piston 15 to move and reset through the retaining ring 23, and the second elastic reset member 25 drives the second piston 19 to move and reset. During the movement and reset of the second piston 19, the push column 20 is driven to move away from the guide column 27, thereby releasing the clamping of the track 8 on the guide rail 7. When the pull ring 22 moves to the end of the sliding groove 12 away from the first piston 15, the connecting plate 6 can drive the sliding seat 3 to move through the pull ring 22 and the ejector 13, so that the ejector pin is separated from the workpiece.

[0055] Reference Figure 8 and Fig. 9 A slide groove 37 is provided in the end wall of the second piston 19 close to the push column 20, and the end of the push column 20 away from the guide column 27 is slidably installed in the slide groove 37. The second piston 19 is located in the slide groove 37 and a third elastic reset member 38 is installed. The third elastic reset member 38 abuts against the end of the push column 20 away from the guide column 27. The second piston 19 is located in the slide groove 37 and two fixed racks 39 are fixedly installed, and the ends of the two fixed racks 39 away from the second piston 19 are slidably installed in the end of the push column 20 away from the guide column 27.

[0056] A trigger rod 28 is slidably installed on the end of the push column 20 away from the second piston 19 along its own axial direction. The end of the trigger rod 28 away from the second piston 19 extends out of the push column 20. A movable rack 41 is fixedly installed on the opposite side walls of the trigger rod 28 close to one end of the second piston 19. Two transmission gears 40 are rotatably installed in the push column 20, and the two transmission gears 40 are respectively meshed with two fixed racks 39 and the movable rack 41.

[0057] Wedge-shaped grooves 30 are provided on the opposite side walls of the trigger rod 28, and two positioning blocks 29 are symmetrically slidably installed in the push column 20 along its own diameter direction. The positioning blocks 29 are opened along the diameter direction of the push column 20, and a wedge-shaped surface is formed at the end of the positioning block 29 close to the trigger rod 28, and the wedge-shaped surface of the positioning block 29 abuts against the wedge-shaped groove 30 of the trigger rod 28.

[0058] When the hydraulic oil pushes the second piston 19 to move, the second piston 19 drives the push column 20 to move toward the guide column 27 through the third elastic reset member 38, and the push column 20 drives the trigger rod 28 to move and makes the end of the trigger rod 28 abut against the guide column 27. As the push column 20 continues to move, the trigger rod 28 is gradually squeezed into the push column 20. When the end of the push column 20 moves away from the guide column 27 and abuts against the end wall of the slide groove 37, the trigger rod 28 is completely squeezed into the push column 20, and the trigger rod 28 pushes the positioning block 29 to move away from itself through the wedge groove 30 and the wedge surface. The end of the positioning block 29 moves away from the trigger rod 28 and abuts against the inner wall of the mounting seat 2 located in the guide groove 26, thereby locking the push column 20. During the process of adjusting the air pressure of the cylinder 5, the thrust of the hydraulic oil on the second piston 19 changes continuously. At this time, the positioning block 29 presses the push column 20 tightly in the guide groove 26, so that the effect of the push column 20 pressing against the track 8 through the guide column 27 and the lifting plate 17 will not be weakened.

[0059] When the workpiece is processed and the cylinder 5 drives the connecting plate 6 to move forward, the second elastic reset member 25 drives the second piston 19 to move away from the guide column 27, and the second piston 19 drives the two fixed racks 39 to move. The two fixed racks 39 drive the two movable racks 41 to move through the two transmission gears 40, and the two movable racks 41 then drive the trigger rod 28 to move away from the second piston 19. When the trigger rod 28 moves, the wedge surface of the positioning block 29 is separated from the wedge groove 30 of the trigger rod 28, so that the positioning of the positioning block 29 on the push column 20 can be released, and the third elastic reset member 38 then pushes the push column 20 to move away from the second piston 19. During the movement of the push column 20, the end of the trigger rod 28 extends out of the push column 20 again, so that the positioning block 29 can lock the push column 20 again.

[0060] The implementation principle of Example 2 of the present application is as follows: when the ejector pin contacts the workpiece, the sliding seat 3 can no longer move. At this time, the cylinder 5 will drive the connecting plate 6 to continue to move in the opposite direction. The ejector column 13 on the sliding seat 3 will push the first piston 15 to slide into the oil storage chamber 14. The first piston 15 drives the retaining ring 23 to move and squeeze the first elastic reset member 24. The first piston 15 delivers the hydraulic oil in the oil storage chamber 14 to the four pressure chambers 18 through the two oil delivery holes 36, the oil delivery pipe 16 and the oil delivery channel 21. The hydraulic oil drives the four second pistons 19 to move in the pressure chamber 18 toward the lifting plate 17. The second pistons 19 move and squeeze the second elastic reset member 25. The second piston 19 drives the push column 20 to move in the guide groove 26, and the push column 20 moves to press against the guide column 27. The four guide columns 27 drive the two lifting plates 17 to move toward the sliding seat 3. The two lifting plates 17 drive the two tracks 8 to clamp the two guide rails 7, reducing the gap between the tracks 8 and the guide rails 7, making it less likely for the sliding seat 3 to vibrate slightly during the workpiece processing, thereby increasing the processing accuracy of the workpiece.

[0061] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A gear grinding machine tailstock, characterized in that: The invention comprises a support plate (1), a mounting seat (2), a sliding seat (3), a top point (4), a cylinder (5) and a connecting plate (6), wherein the mounting seat (2) is fixedly arranged on the support plate (1), the sliding seat (3) is slidably arranged in the mounting seat (2), the top point (4) is arranged at one end of the sliding seat (3), the cylinder (5) is fixedly arranged in the mounting seat (2), the connecting plate (6) is fixedly connected to the driving end of the cylinder (5), the end of the sliding seat (3) away from the top point (4) is connected to the connecting plate (6), the sliding seat (3) is fixedly provided with guide rails (7) on both sides perpendicular to its own moving direction, and the mounting seat (3) is provided with a plurality of guide rails (7) on both sides of the sliding seat (3) and the plurality of guide rails (7) on both sides of the sliding seat (3) and the plurality of guide rails (7) on the two sides of the sliding seat (3) and the plurality of guide rails (7) on the two sides of the sliding seat (3) and the plurality of guide rails (7) on the two sides of the sliding seat (3) are fixedly arranged ... Tracks (8) are arranged on opposite sides of the sliding seat (3) in the seat (2); the two guide rails (7) are slidably arranged in the two tracks (8) along the moving direction of the sliding seat (3); a sliding groove (12) is arranged in the connecting plate (6); a top column (13) is slidably arranged in the sliding groove (12) of the connecting plate (6); an end of the top column (13) passes through the connecting plate (6) and is fixedly connected to an end of the sliding seat (3) away from the top (4); an oil storage chamber (14) is arranged in the connecting plate (6) and is communicated with the sliding groove (12); a first piston (15) is slidably arranged in the oil storage chamber (14); One end of the first piston (15) is located in the sliding groove (12), and the other end is located in the oil storage chamber (14). The opposite side walls of the connecting plate (6) are provided with oil delivery pipes (16) connected to the oil storage chamber (14). The mounting seat (2) is located on the side where the two tracks (8) are away from each other and is provided with a lifting plate (17) slidingly arranged in a direction perpendicular to the track (8). The track (8) is fixedly arranged on the side wall of the lifting plate (17) close to the sliding seat (3). The mounting seat (2) is located on the side where the two lifting plates (17) are away from each other and is provided with a plurality of pressure chambers (18). The pressure chambers (18) slide in the pressure chambers (18). A second piston (19) is provided, and a push column (20) is provided at an end of the second piston (19) close to the lifting plate (17). The push column (20) moves away from the end of the second piston (19) to abut against the lifting plate (17). Two oil delivery channels (21) communicating with a plurality of pressure chambers (18) are provided in the mounting seat (2). An end of the oil delivery pipe (16) away from the connecting plate (6) is connected to the mounting seat (2) and communicates with an end of the oil delivery channel (21) away from the pressure chamber (18). Hydraulic oil is stored in the oil storage chamber (14), the oil delivery pipe (16), the oil delivery channel (21) and the pressure chamber (18).

2. The tailstock of a gear grinding machine according to claim 1, characterized in that: A connecting seat (9) is provided on the mounting seat (2), and an elastic member (10) is provided on the connecting seat (9), and two ends of the elastic member (10) respectively abut against the connecting seat (9) and the side wall of the connecting plate (6) away from the sliding seat (3).

3. The tailstock of a gear grinding machine according to claim 2, characterized in that: A guide flange (11) is provided on the connecting seat (9), and one end of the elastic member (10) away from the connecting plate (6) is located inside the guide flange (11).

4. The tailstock of a gear grinding machine according to claim 1, characterized in that: A pull ring (22) is provided at the end of the push column (13) close to the first piston (15), and the pull ring (22) is slidably arranged in the sliding groove (12) along the sliding direction of the first piston (15). A retaining ring (23) is fixedly arranged at the end of the first piston (15) close to the push column (20). A first elastic return member (24) is sleeved on one end of the first piston (15) close to the retaining ring (23), and one end of the first elastic return member (24) abuts against a side wall of the retaining ring (23) away from the push column (20). , the other end abuts against the inner wall of the connecting plate (6) located in the sliding groove (12), the diameter of the push column (20) is smaller than the diameter of the second piston (19), the mounting seat (2) is provided with a second elastic return member (25) located in the pressure chamber (18), the second elastic return member (25) is sleeved on the push column (20), one end of the second elastic return member (25) abuts against the side wall of the second piston (19) close to the push column (20), and the other end abuts against the inner wall of the mounting seat (2) located in the pressure chamber (18).

5. The tailstock of a gear grinding machine according to claim 1, characterized in that: A guide groove (26) communicating with the pressure chamber (18) is provided in the mounting seat (2). The guide groove (26) is located on a side of the pressure chamber (18) close to the lifting plate (17). A plurality of guide columns (27) are fixedly provided on a side wall of the lifting plate (17) away from the track (8). The guide columns (27) are slidably provided in the guide groove (26) along the moving direction of the lifting plate (17). An end of the push column (20) away from the second piston (19) extends into the guide groove (26) and moves to abut against the end of the guide column (27).

6. The tailstock of a gear grinding machine according to claim 5, characterized in that: The end of the push column (20) away from the second piston (19) is provided with a trigger rod (28) which slides along its own axial direction. The end of the trigger rod (28) away from the second piston (19) extends out of the push column (20). A plurality of positioning blocks (29) are provided in the push column (20) which slide along its own circumferential direction at equal intervals. A plurality of wedge-shaped grooves (30) are provided on the side wall of the trigger rod (28). A wedge-shaped surface is formed at the end of the positioning block (29) close to the trigger rod (28). The wedge-shaped surface of the positioning block (29) abuts against the wedge-shaped groove (30) of the trigger rod (28). When the trigger rod (28) moves toward the trigger rod (28), the trigger rod (28) is pushed out of the push column (20). When the second piston (19) moves in the direction of the trigger rod (28), the trigger rod (28) pushes the positioning block (29) to move away from itself through the wedge groove (30) and the wedge surface, and the end of the positioning block (29) moves away from the trigger rod (28) and presses against the inner wall of the guide groove (26) of the mounting seat (2); a fixed rack (39) is arranged on the end wall of the second piston (19) close to the push column (20), a movable rack (41) is arranged on the side wall of the trigger rod (28), and a transmission gear (40) is rotatably arranged in the push column (20), and the transmission gear (40) meshes with the movable rack (41) and the fixed rack (39).

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