Straight gear positioning and grinding device

Abstract

The utility model relates to the technical field of a clamping device which is combined with a gear cutting machine or installed on the gear cutting machine and used for manufacturing a gear or a rack, in particular to a straight gear positioning and polishing device. The straight gear positioning and grinding device comprises a supporting base and a main shaft, the supporting base is connected with a clamping assembly through a supporting body, the clamping assembly comprises a gear positioning section used for assembling a gear and a fixing clamping block used for clamping one side of the gear, and the main shaft is sleeved with a pushing mechanism used for pushing out the gear. The pushing mechanism comprises a sliding sleeve movably arranged on the main shaft in a sleeving mode, a pushing block is arranged on the side, close to the fixed clamping block, of the sliding sleeve, and a pushing block receding hole is formed in the fixed clamping block so that the pushing block can be inserted into the pushing block receding hole and the gear can be pushed to be separated from the gear positioning section through the pushing block. According to the straight gear positioning and polishing device, the gear does not need to be manually taken down from the gear positioning section by a worker, the gear is directly ejected out through the pushing block, and the gear taking and disassembling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of clamping devices for manufacturing gears or racks that are combined with or mounted on a gear cutting machine, and particularly to a spur gear positioning and grinding device. Background Technology

[0002] The machining process of spur gears mainly includes three major steps: forging the blank, turning, and grinding. Over-grinding the blank will render it unusable, while insufficient grinding will require secondary processing, reducing machining efficiency. Therefore, it is necessary to position the blank to prevent it from shaking or shifting during grinding, which could cause a deviation between the actual grinding amount and the preset grinding amount.

[0003] In the prior art, Chinese utility model patent with authorization announcement number CN212823171U and authorization announcement date of March 30, 2021 discloses a positioning fixture for spur gear machining. The fixture includes a base, with a vertical arm and a fixed seat at each end of the base. The vertical arm is connected to a fixed clamping plate via a transmission shaft. A cylinder is mounted on the fixed seat, and a movable clamping plate is connected to the piston rod of the cylinder. A positioning shaft is fixed at the center of the end face of the fixed clamping plate near the movable clamping plate. The movable clamping plate is provided with a positioning groove corresponding to the positioning shaft and allowing the positioning shaft to be inserted. In use, the workpiece to be machined can be mounted on the positioning shaft, and the movable clamping plate is controlled by the cylinder to move closer to the fixed clamping plate, while the positioning shaft is inserted into the positioning groove to achieve clamping and positioning of the workpiece.

[0004] The aforementioned positioning fixture can position the workpiece to be processed, but during the workpiece processing and grinding process, a lot of debris will be generated. This debris will fall onto the positioning shaft or enter the gap between the workpiece and the positioning shaft. After the workpiece is processed, the worker needs to manually remove the workpiece from the positioning shaft on the fixed clamping plate. However, the debris will obstruct the removal path of the workpiece, making it difficult for the worker to manually remove the workpiece, wasting the worker's time and reducing the production efficiency of spur gears. Utility Model Content

[0005] The purpose of this invention is to provide a spur gear positioning and grinding device, which aims to solve the problems of the difficulty of manual workpiece handling, the time wasted by workers, and the reduced production efficiency of spur gears.

[0006] To achieve the above objectives, the spur gear positioning and grinding device of this utility model adopts the following technical solution:

[0007] A spur gear positioning and grinding device includes a support base and a main shaft. The support base is connected to a clamping assembly via a support body. The clamping assembly includes a gear positioning section for assembling the gear and a fixed clamping block that clamps one side of the gear. A pushing mechanism for pushing out the gear is sleeved on the main shaft. The pushing mechanism includes a sliding sleeve movably sleeved on the main shaft. A pushing block is provided on the side of the sliding sleeve near the fixed clamping block. The fixed clamping block has a pushing block clearance hole for the pushing block to pass through and push the gear to separate from the gear positioning section.

[0008] Furthermore, the sliding sleeve is equipped with an operating mechanism, which includes a rotating arm and a connecting rod. One end of the connecting rod is hinged to the rotating arm, and the other end is hinged to the sliding sleeve. The rotating arm, the connecting rod, and the sliding sleeve together constitute a rocker-slider mechanism, and a handle is provided on the rotating arm.

[0009] Furthermore, an axially extending groove is provided on the outer wall of the spindle, the rotating arm is installed in the groove, and the handle is also embedded in the groove to form a hidden handle.

[0010] Furthermore, the main shaft is provided with a free travel of the sliding sleeve. When in the free travel, the push block does not contact the corresponding gear.

[0011] Furthermore, the inner wall of the sliding sleeve is provided with a protrusion protruding into the groove, and the connecting rod is connected to the corresponding side of the protrusion.

[0012] Furthermore, a side slider is provided on one of the inner wall of the sliding sleeve and the outer wall of the main shaft, and a groove is provided on the other for accommodating the axial extension of the side slider. An insert block is provided in the groove and arranged along the axial direction of the main shaft. The side slider is provided with a slot that matches the insert block. When the sliding sleeve is ready, the insert block is inserted into the corresponding slot.

[0013] Furthermore, the side slider is disposed on the inner wall of the sliding sleeve, and one end of the side slider opposite to the insert block protrudes from the sliding sleeve and forms a top head for disengaging the gear. The fixed clamping block is provided with a top head clearance opening corresponding to the top head.

[0014] Furthermore, a gear positioning section for positioning the gear is provided at the center of the side of the fixed clamp block opposite to the sliding sleeve. A clamping thread section is coaxially provided at the end of the gear positioning section away from the fixed clamp block. A threaded clamping sleeve for clamping the gear is threadedly installed on the clamping thread section. A mounting seat is provided on the side of the threaded clamping sleeve away from the gear positioning section. An axially telescopic rod is provided on the mounting seat. The threaded clamping sleeve is rotatably assembled on the telescopic rod.

[0015] Furthermore, the telescopic rod is equipped with a return spring that drives it toward the fixed clamping block.

[0016] Furthermore, a grinding assembly is provided on the support base, and a bottom slider is connected to the lower end of the grinding assembly. The support base is provided with a strip groove that slides with the bottom slider. A pneumatic cylinder is provided on one side of the grinding assembly to drive the grinding assembly to move closer to or away from the main shaft.

[0017] Beneficial Effects: This utility model of a spur gear positioning and grinding device is an improved invention. The support base and support body provide support for the clamping assembly. When grinding the gear, the clamping assembly can clamp and position the gear, fitting the gear onto the gear positioning section. The fixed clamping block on one side of the gear positioning section forms a clamping limit on one side of the gear, facilitating gear positioning and grinding. A sliding sleeve is fitted on the main shaft, allowing the sliding sleeve to move axially along the main shaft. The sliding sleeve is controlled to move along the main shaft towards the fixed clamping block until the push block on the sliding sleeve passes through the push block clearance hole on the fixed clamping block, contacts the gear on the gear positioning section, and pushes the gear, separating the gear from the gear positioning section. This completes the removal and unloading of the gear. This setup eliminates the need for workers to manually remove the gear from the gear positioning section; the gear can be directly pushed out by the push block, improving the gear removal and unloading efficiency and thus increasing the production efficiency of spur gears. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the spur gear positioning and grinding device of this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the overall structure of one embodiment of the spur gear positioning and grinding device from another perspective;

[0020] Figure 3 for Figure 1 A partially enlarged schematic diagram of point A in one embodiment of the spur gear positioning and grinding device;

[0021] Figure 4 This is a schematic diagram of the operating mechanism of an embodiment of the spur gear positioning and grinding device of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of a grinding component in one embodiment of the spur gear positioning and grinding device of this utility model;

[0023] Figure 6 This is a schematic diagram of the connection structure between the clamping assembly and the resetting component in one embodiment of the spur gear positioning and grinding device of this utility model.

[0024] Figure 7 This is a schematic diagram showing the positional structure of the rotating arm and the groove in one embodiment of the spur gear positioning and grinding device of this utility model.

[0025] In the diagram: 1. Support base; 2. Support body; 3. Clamping assembly; 4. Gear positioning section; 5. Fixed clamping block; 6. Main shaft; 7. Sliding sleeve; 8. Push block; 9. Push block clearance hole; 10. Operating mechanism; 11. Rotating arm; 12. Connecting rod; 13. Handle; 14. Groove; 15. Protrusion; 16. Side slider; 17. Slide groove; 18. Insert block; 19. Slot; 20. Top head; 21. Top head clearance opening; 22. Clamping thread section; 23. Threaded clamping sleeve; 24. Mounting base; 25. Telescopic rod; 26. Return spring; 27. Grinding assembly; 28. Bottom slider; 29. ​​Strip groove; 30. Pneumatic cylinder; 31. Counterweight base; 32. Grinding blade. Detailed Implementation

[0026] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0027] Existing spur gear machining positioning fixtures require manual unloading of the polished workpiece. However, debris generated during polishing falls onto the workpiece's unloading path or enters through the gap between the workpiece and the positioning shaft, obstructing the unloading path and making manual unloading difficult. To improve workpiece unloading efficiency, a pushing structure can be used to push the workpiece, replacing manual unloading. Specifically, a sliding sleeve with a pushing block connected to it can be fitted onto the spindle, and a channel for the pushing block to pass through is provided on the workpiece clamping fixture. By controlling the sliding sleeve to move along the spindle towards the fixture, the pushing block passes through the channel on the fixture and pushes the workpiece out. Based on the above inventive concept, this utility model proposes a spur gear positioning and polishing device. The workpiece is clamped and positioned by a clamping assembly, and a pushing mechanism is set on the spindle. The pushing mechanism is controlled to move towards the clamping assembly, so that the pushing block of the pushing mechanism passes through the pushing block avoidance hole on the fixed clamping block of the clamping assembly and contacts the workpiece, pushing the workpiece out to complete the unloading.

[0028] The implementation method of the spur gear positioning and grinding device of this utility model:

[0029] See Figures 1 to 2As a basic embodiment of this utility model, the spur gear positioning and grinding device includes a support base 1 and a main shaft 6. The support base 1 is connected to a clamping assembly 3 via a support body 2. The support base 1 and the support body 2 provide support for the clamping assembly 3. The clamping assembly 3 includes a gear positioning section 4 for assembling a gear and a fixed clamping block 5 that clamps one side of the gear. The gear is fitted onto the gear positioning section 4, and the fixed clamping block 5 on one side of the gear positioning section 4 forms a clamping limit on one side of the gear. By controlling the rotation of the main shaft 6, the clamping assembly 3 can be rotated, thereby rotating the gear clamped by the clamping assembly 3 to achieve the grinding of the gear. A pushing mechanism for pushing out the gear is sleeved on the main shaft 6. The pushing mechanism includes a sliding sleeve 7 movably sleeved on the main shaft 6. A pushing block 8 is provided on the side of the sliding sleeve 7 near the fixed clamping block 5, and a pushing block is provided on the fixed clamping block 5. The clearance hole 9 allows the push block 8 to pass through and push the gear to separate from the gear positioning section 4. When removing or unloading the gear, the sliding sleeve 7 is controlled to move along the axial direction of the main shaft 6 towards the fixed clamping block 5 until the push block 8 on the sliding sleeve 7 is inserted into the push block clearance hole 9 on the fixed clamping block 5, contacts the gear on the gear positioning section 4 and pushes the gear, so that the gear is separated from the gear positioning section 4, thus completing the removal or unloading of the gear. In this basic embodiment, the sliding sleeve 7 can be moved manually by the worker, or the sliding sleeve 7 can be moved by a drive component such as a motor or pneumatic cylinder, as long as the sliding sleeve 7 can move along the axial direction of the main shaft. This setting eliminates the need for the worker to manually remove the gear from the gear positioning section 4, and the gear can be directly pushed out by the push block 8, which improves the removal and unloading efficiency of the gear, and thus improves the production efficiency of spur gears.

[0030] See Figure 4 In a preferred embodiment of this utility model, the sliding sleeve 7 is equipped with an operating mechanism 10, which includes a rotating arm 11 and a connecting rod 12. One end of the connecting rod 12 is hinged to the rotating arm 11, and the other end is hinged to the sliding sleeve 7. The rotating arm 11, the connecting rod 12, and the sliding sleeve 7 together constitute a rocker-slider mechanism. A handle 13 is provided on the rotating arm 11, which can be directly flipped to move the sliding sleeve 7 along the axial direction of the main shaft 6 towards the fixed clamping block 5. In specific use, taking advantage of the working characteristics of the rocker-slider mechanism composed of the rotating arm 11, the connecting rod 12, and the sliding sleeve 7, the worker flips the end of the handle 13 upward, causing the rotating arm 11 connected to the handle 13 to rotate. The rotating arm 11 drives the connecting rod 12 to flip, and the connecting rod 12 drives the sliding sleeve 7 to move along the axial direction of the main shaft 6. The push block 8 on the sliding sleeve 7 also moves accordingly, so that the push block 8 passes through the push block clearance hole 9 to push the gear to separate from the gear positioning section 4, thus completing the removal and unloading of the gear.

[0031] See Figure 7In a preferred embodiment of this utility model, an axially extending groove 14 is provided on the outer wall of the main shaft 6, the rotating arm 11 is installed in the groove 14, and the handle 13 is also embedded in the groove 14 to form a hidden handle 13. Hiding the handle 13 in the groove 14 can avoid interference between the handle 13 and other components, save space, and make the appearance more beautiful. In this embodiment, when removing or removing the gear, a hook ring can be connected to the end of the handle 13. The hook ring makes it easy for the worker to lift the handle 13 out of the groove 14, and then the rocker-slider mechanism composed of the rotating arm 11, the connecting rod 12 and the sliding sleeve 7 is used to push the gear out by the push block 8 on the sliding sleeve 7.

[0032] In a preferred embodiment of this utility model, the main shaft 6 is provided with a sliding sleeve 7 in its idle stroke. When the sliding sleeve 7 is in its idle stroke, the push block 8 does not contact the corresponding gear. In this embodiment, the beginning of the idle stroke is set at a position on the main shaft 6 away from the fixed clamping block 5, and the end of the idle stroke is set at a position on the main shaft 6 close to the fixed clamping block. That is, when the sliding sleeve 7 moves to the end of the idle stroke, the push block 8 on the sliding sleeve 7 contacts the gear. At this time, the sliding sleeve 7 continues to move towards the fixed clamping block, and the push block 8 begins to apply a pushing force to the gear, pushing the gear out. Specifically, in the initial state, the sliding sleeve 7 is at the beginning of the idle stroke, the handle 13 is flatly embedded in the groove 14, and the connecting rod 12 is in a vertical state. When removing or unloading gears, the worker can first apply a pushing force to the sliding sleeve 7, causing the sliding sleeve 7 to slide towards the fixed clamping block 5 within its free stroke. During this process, the connecting rod 12 moves with the sliding sleeve 7 and rotates at a certain angle relative to the sliding sleeve 7. At the same time, the connecting rod 12 drives the rotating arm 11 to rotate accordingly, and one end of the handle 13 connected to the rotating arm 11 is raised. Then, the worker holds the raised end of the handle 13 and applies an upward pushing force to the handle 13, causing the handle 13 to continue to rotate upward, thereby causing the sliding sleeve 7 to continue to move towards the fixed clamping block 5 until the push block 8 on the sliding sleeve 7 completes the jacking off of the gear. This setting is conducive to the quick removal and unloading of gears, is more convenient and labor-saving, and has a higher removal and unloading efficiency.

[0033] See Figures 3 to 4 In a preferred embodiment of this utility model, the inner wall of the sliding sleeve 7 is provided with a protrusion 15 protruding into the groove 14. The connecting rod 12 is connected to the corresponding side of the protrusion 15. The protrusion 15 and the groove 14 are arranged opposite to each other. When the sliding sleeve 7 moves axially along the main shaft 6, the protrusion 15 moves along the groove 14. The protrusion 15 and the groove 14 form a relative limit, which can ensure that the sliding sleeve 7 does not rotate too much during the axial movement of the main shaft 6, and avoid the sliding sleeve 7 rotating relative to the main shaft 6. This prevents the push block 8 from entering the push block avoidance hole 9, which would cause the push block 8 to get stuck.

[0034] In a preferred embodiment of this utility model, a side slider 16 is provided on one of the inner wall of the sliding sleeve 7 and the outer wall of the main shaft 6, and a groove 17 for accommodating the axially extending side slider 16 is provided on the other. In this embodiment, the side slider 16 is disposed on the inner wall of the sliding sleeve 7, and the groove 17 is disposed on the outer wall of the main shaft. When the sliding sleeve 7 moves axially along the main shaft 6, the side slider 16 on the inner wall of the sliding sleeve 7 slides within the groove 17 on the outer wall of the main shaft 6. For details, please refer to [reference needed]. Figure 2 , Figure 3 , Figure 5 Meanwhile, a block 18 is provided in the groove 17 along the axial direction of the main shaft 6, and a slot 19 adapted to the block 18 is provided on the side slider 16. When the sleeve 7 is in standby mode, that is, when the sleeve 7 is at the beginning of the idle stroke, the block 18 is inserted into the corresponding slot 19. During the grinding process of the gear, the sleeve 7 is always in standby mode, and the slot 19 on the side slider 16 and the block 18 in the groove 17 are engaged. This arrangement can prevent the sleeve 7 from rotating relative to the main shaft 6, and the sleeve 7 will not wobble during the rotation of the main shaft 6, which is beneficial to the overall stability of the device during the grinding process. In other embodiments, the side slider 16 can also be set on the outer wall of the main shaft 6, and the groove 17 can be set on the inner wall of the sleeve 7, which can also realize the axial movement and anti-rotation engagement between the sleeve 7 and the main shaft 6.

[0035] In a preferred embodiment of this utility model, the side slider 16 is disposed on the inner wall of the sliding sleeve 7. The end of the side slider 16 opposite to the insert block 18 protrudes from the sliding sleeve 7 and forms a top head 20 for disengaging the gear. The fixed clamping block 5 is provided with a top head clearance opening 21 corresponding to the top head 20. When the push block 8 moves with the sliding sleeve 7 to enter the push block clearance hole 9 to push the gear, the top head 20 also enters the top head clearance opening 21 at the same time and pushes the gear. The top head 20 cooperates with the push block 8 to push the gear at the same time, which can make the gear quickly separate from the gear positioning section 4 and complete the removal and unloading of the gear.

[0036] See Figure 6In a preferred embodiment of this utility model, a gear positioning section 4 for positioning the gear is provided at the center of the side of the fixed clamping block 5 away from the sliding sleeve 7. A clamping thread section 22 is coaxially provided at the end of the gear positioning section 4 away from the fixed clamping block 5. A threaded clamping sleeve 23 for clamping the gear is threadedly installed on the clamping thread section 22. A mounting seat 24 is provided on the side of the threaded clamping sleeve 23 away from the gear positioning section 4. An axially telescopic rod 25 is provided on the mounting seat 24. The threaded clamping sleeve 23 is rotatably mounted on the telescopic rod. When the telescopic rod 25 is shortened inward to the mounting base 24, it can make room for the gear installation, making it easier for workers to assemble the gear on the gear positioning section 4. Then, the telescopic rod 25 is controlled to extend outward to the mounting base 24, so that the threaded clamping sleeve 23 and the fixed clamping block 5 cooperate to form a stable clamp on the gear on the gear positioning section 4, so that the grinding work can be carried out smoothly. When grinding the gear, the spindle 6 drives the fixed clamping block 5 to rotate, thereby realizing the rotation of the gear that is stably clamped by the fixed clamping block 5 and the threaded clamping sleeve 23, and realizing the grinding of the gear.

[0037] In a preferred embodiment of this utility model, the telescopic rod 25 is equipped with a return spring 26 that drives it closer to the fixed clamping block 5. The telescopic rod 25 can extend and retract axially relative to the mounting base 24, thereby adapting to the deformation and return of the return spring 26, and thus changing the distance between the threaded clamping sleeve 23 and the fixed clamping block 5, ensuring that the gear has sufficient installation space. In specific use, the worker needs to apply a thrust to the threaded clamping sleeve 23 in a direction away from the fixed clamping block 5. After the gear is assembled, the thrust is released, and the threaded clamping sleeve 23 is threadedly connected to the fixed clamping block 5 to achieve clamping of the gear.

[0038] See Figure 5 In a preferred embodiment of this utility model, a grinding assembly 27 is provided on the support base 1. A bottom slider 28 is connected to the lower end of the grinding assembly 27. The support base 1 is provided with a strip-shaped groove 29 that slides with the bottom slider 28. A pneumatic cylinder 30 is arranged on one side of the grinding assembly 27 to drive the grinding assembly 27 closer to or away from the main shaft 6. In this embodiment, the grinding assembly 27 includes a counterweight 31 and a grinding blade 32. The bottom slider 28 is connected to the bottom surface of the counterweight 31. The counterweight 31 is connected to the bottom slider. The 28 slides within the slot 29 of the support base 1. A rotary motor is mounted on the counterweight 31. The grinding blade 32 is mounted on the shaft of the rotary motor. After the gear is stably clamped, the rotary motor is turned on, and the grinding blade 32 rotates with the shaft of the rotary motor to grind the gear. The pneumatic cylinder 30 is connected to the counterweight 31. The position of the counterweight 31 within the slot 29 can be adjusted by the pneumatic cylinder 30, thereby adjusting the distance between the grinding blade 32 and the gear, thus adapting to gears of different specifications.

[0039] The operation process of this utility model's spur gear positioning and grinding device is as follows: First, the worker pushes the threaded clamping sleeve 23 away from the fixed clamping block 5 to create space for the gear installation. During this process, the return spring 26 deforms and generates a restoring force, allowing the gear to be installed on the gear positioning section 4 and in contact with the fixed clamping block 5. The threaded clamping sleeve 23 is then released, allowing it to return to its original position under the restoring force of the return spring 26. Subsequently, the main shaft 6 is controlled to rotate, first causing the threaded clamping sleeve 23 to press the gear onto the fixed clamping block 5. Then, the main shaft 6 drives the fixed clamping block 5 and the threaded clamping sleeve 23 to rotate, thereby causing the gear held by the fixed clamping block 5 and the threaded clamping sleeve 23 to rotate. At this time, the rotary motor 36 is turned on, and the rotary motor 36 drives the grinding blade 32 to rotate. Then, the pneumatic cylinder 30 controls the rotation of the grinding blade. The counterweight 31 moves along the slot 29 until the grinding blade 32 contacts the gear, thus grinding the gear. After grinding, the pneumatic cylinder 30 drives the counterweight 31 away from the gear, controlling the spindle 6 to stop rotating, separating the threaded clamping sleeve 23 from the fixed clamping block 5. Then, the worker manually controls the sliding sleeve 7 to move towards the fixed clamping block 5 within the idle stroke, causing the handle 13 to tilt up until the sliding sleeve 7 reaches the end of the idle stroke. At this time, the push block 8 and the push head 20 pass through the corresponding push block clearance hole 9 and push head clearance opening 21 and contact the push gear. Then, the worker holds the tilted handle 13 and continues to rotate the handle 13, causing the sliding sleeve 7 to continue moving towards the fixed clamping block 5, thereby causing the push block 8 and the push head 20 to push the gear simultaneously until the gear separates from the gear positioning section 4, thus achieving the removal and unloading of the gear.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A straight gear positioning and grinding device, comprising a support base and a main shaft, the support base being connected with a clamping assembly through a support body, the clamping assembly comprising a gear positioning section for assembling a gear and a fixed clamping block for forming clamping on one side of the gear, characterized in that: The main shaft is sleeved with a pushing mechanism for pushing the gear, the pushing mechanism comprises a sliding sleeve sleeved on the main shaft, the sliding sleeve is provided with a pushing block on the side close to the fixed clamping block, the fixed clamping block is provided with a pushing block avoiding hole for the pushing block to pass through, and the pushing block pushes the gear to separate from the gear positioning section through the pushing block.

2. The straight gear positioning lapping device according to claim 1, wherein: The sliding sleeve is provided with an operating mechanism, the operating mechanism comprises a rotating arm and a connecting rod, one end of the connecting rod is hinged to the rotating arm, and the other end is hinged to the sliding sleeve, the rotating arm, the connecting rod and the sliding sleeve constitute a rocker slider mechanism together, and a handle is arranged on the rotating arm.

3. The straight gear positioning lapping device of claim 2, wherein: An axially extending groove is arranged on the outer wall of the main shaft, the rotating arm is installed in the groove, and the handle is also embedded into the groove to form a hidden handle.

4. The straight-cut gear positioning and lapping device of claim 3, wherein: The main shaft is provided with an idle stroke of the sliding sleeve, when in the idle stroke, the pushing block does not contact the corresponding gear.

5. The straight-cut gear positioning and lapping device of claim 3, wherein: A protruding block is arranged on the inner wall of the sliding sleeve and protrudes into the groove, and the connecting rod is connected to the corresponding side of the protruding block.

6. The straight-cut gear positioning and lapping device of claim 1, wherein: One of the inner wall of the sliding sleeve and the outer wall of the main shaft is provided with a side sliding block, and the other is provided with an axially extending sliding groove for accommodating the side sliding block, the sliding groove is provided with an insertion block arranged in the axial direction of the main shaft, the side sliding block is provided with an insertion slot matched with the insertion block, and when the sliding sleeve is on standby, the insertion block is inserted into the corresponding insertion slot.

7. The straight gear positioning and lapping device of claim 6, wherein: The side sliding block is arranged on the inner wall of the sliding sleeve, one end of the side sliding block away from the insertion block protrudes out of the sliding sleeve and forms a pushing head for pushing the gear, and the fixed clamping block is provided with a pushing head avoiding hole corresponding to the pushing head.

8. The straight gear positioning grinding device according to any one of claims 1-7, characterized in that: A gear positioning section for positioning the gear is arranged at the center of the side of the fixed clamping block away from the sliding sleeve, a compression screw thread section coaxially arranged at the end of the gear positioning section away from the fixed clamping block, a threaded compression sleeve for compressing the gear is threadedly installed on the compression screw thread section, an installation seat is arranged at the side of the threaded compression sleeve away from the gear positioning section, an axially telescopic telescopic rod is arranged on the installation seat, and the threaded compression sleeve is rotationally assembled on the telescopic rod.

9. The straight-cut gear positioning and lapping device of claim 8, wherein: The telescopic rod is provided with a reset spring for driving it to approach the fixed clamping block.

10. The straight-cut gear positioning and lapping device of claim 1, wherein: The support base is provided with a polishing assembly, a bottom sliding block is connected to the lower end of the polishing assembly, a strip-shaped notch is arranged on the support base and slidably matched with the bottom sliding block, and a pneumatic cylinder is arranged on one side of the polishing assembly to drive the polishing assembly to approach or move away from the main shaft.

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