Rapid centering gear grinding clamp for thin-wall inner gear ring

Abstract

The invention discloses a rapid centering gear grinding clamp for a thin-wall inner gear ring. The rapid centering gear grinding clamp comprises a shell, a connecting rod lifting mechanism, a rapid centering mechanism and a cam type rotary rapid clamping mechanism. The eccentric globoidal cam centering is adopted to replace the traditional mode of knocking centering and the like. The eccentric globoidal cam is moved through the handle to automatically align the gear ring, so that the manual centering time is greatly shortened, and the production efficiency of the gear ring is improved; and the design of the eccentric globoidal cam can accurately match the profile of the addendum circle, so that the centering accuracy and stability are ensured. The rapid centering mechanism and the cam type rotary rapid clamping mechanism are adopted, so that the centering and clamping process of the gear ring becomes simple and easy to implement. And a worker only needs to operate according to set steps. Centering and clamping can be completed through simple operation such as handle pressing and handle rotating, excessive intervention of workers is avoided, and the requirement for the level of operators is lowered. According to the method, errors possibly introduced by human factors in the operation process are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of gear processing equipment, and in particular relates to a quick centering and grinding fixture for a thin-walled inner gear ring. Background Art

[0002] In the field of precision gear manufacturing, the quality of ring gear grinding directly impacts the lifespan and operational stability of the transmission system. The centering efficiency and accuracy of the gear grinding fixture are key factors limiting process quality. Compared to external gears, the structural characteristics of internal gears like ring gears make the design of ring gear grinding fixtures more challenging. Consequently, manufacturers often rely on manual centering and clamping. This method relies on operator experience and suffers from poor positioning repeatability, making it difficult to meet precision requirements above GB5. Therefore, the design of a quick centering and grinding fixture for ring gears has become a key challenge in current ring gear production. Existing gear grinding fixtures primarily consist of a base and a pressure plate. First, the base is aligned with the center of the grinding machine. The ring gear is then placed on the stepped surface of the base. Alignment is then achieved by repeatedly tapping the ring gear using a dial indicator. Finally, the pressure plate is tightened against the ring gear by tightening the bolts. This type of gear grinding fixture is time-consuming and labor-intensive, requiring high operator skill. Furthermore, the uneven clamping force distribution caused by the bolts can easily lead to human error. Therefore, if human intervention can be reduced during the alignment process, the efficiency of the gear ring grinding will be effectively improved and the additional errors caused by it will be reduced.

[0003] Chinese patent CN202421467875.8 discloses an "automatic centering gear grinding fixture," which includes a fixture base, a movable chuck, and a locking rod mechanism. The grinding fixture automatically positions itself by inserting the centering rod of the fixture base into the center of the gear shaft, and locks the gear with the movable chuck and locking rod structure to complete gear grinding. Chinese patent CN202410725517.0 discloses a "helical gear centering grinding fixture," which adjusts the distance between the gear and the three-jaw chuck through the threaded coupling of the movable sleeve and the retention sleeve, and uses the fixed frame and damping locking plate on the sliding column to complete the gear centering and locking. The preset distance is used to reduce repeated deviations during clamping. Both of the above inventions use the inner hole of the gear for centering and can be applied to the grinding of external gears of different specifications. However, due to the structural characteristics of the ring gear being an internal gear, the above positioning method is not applicable and will affect the feeding of the grinding wheel. There are also patents specifically for grinding fixtures with non-circular inner holes. Chinese patent CN202410639175.0 discloses an "internal gear grinding tool". When the tool is connected to the grinding fixture body through an annular cover plate, the force-applying part at the bottom of the cover plate drives the annular pressing part to squeeze the internal gear to be processed radially inward to achieve self-centering clamping. Chinese patent CN202011094971.9 discloses "A centering and fastening method and fixture for internal spline gear grinding". The grinding fixture cooperates with the eccentric arc cam on the core shaft and the roller. The cam rotates to make the roller expand radially between the internal spline tooth grooves, achieving high-precision centering and fastening. The first invention uses the outer circle of the gear ring as the centering reference, and the requirement of centering the internal gear ring with the tooth top circle cannot be used; the second invention serves as a reference for the centering of the internal gear ring, but this type of grinding fixture will also interfere with the grinding path of the internal gear ring grinding wheel. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned existing gear grinding fixtures and provide a thin-walled internal gear ring quick centering grinding fixture that can achieve the following purposes:

[0005] 1. It can accurately match the profile of the tooth top circle to ensure accurate and stable centering;

[0006] 2. The centering and clamping process before gear ring grinding should be easy to operate to improve the centering efficiency of workers;

[0007] 3. It can be applied to internal gear processing and reserve processing space for gear grinding. The gear grinding fixture structure cannot hinder the feeding of the grinding wheel.

[0008] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows: a thin-walled internal gear ring quick centering and grinding fixture, comprising a housing, a connecting rod lifting mechanism, a quick centering mechanism, and a cam-type rotary quick clamping mechanism, wherein the connecting rod lifting mechanism is mounted on the base of the housing and is driven to rise and fall by a handle. The fixed shaft of the quick centering mechanism is fixedly connected to the top of the connecting rod lifting mechanism via an angular contact ball bearing; the centering push rod inside the quick centering mechanism contacts the gear ring through radial movement; the gear ring is placed on the upper end face of the housing, and the tooth top circle of the gear ring is centered by the radially extending push rod of the quick centering mechanism; the cam-type rotary quick clamping mechanism is fixedly mounted on the side face of the housing, and the head of the cam-type rotary quick clamping mechanism axially presses the centered end face of the gear ring.

[0009] Furthermore, the shell is composed of a lower shell and an upper shell fixedly connected by bolts.

[0010] Furthermore, the connecting rod lifting mechanism includes a lifting slider, an ear seat, connecting rod I, an axial guide rail, connecting rods II, III, IV, a handle, and a lifting bracket. The lower end of connecting rod I, the left end of connecting rod II, and the upper end of connecting rod III are hinged together. The upper end of connecting rod I is hinged to the ear seat on the lifting slider, and the other end of connecting rod II is hinged to the upper portion of connecting rod IV. The handle is mounted on the upper end of connecting rod IV, and the lower ends of connecting rods III and IV are hingedly mounted on the lifting bracket. Connecting rods I, II, III, and IV form a spatial linkage mechanism, and pushing the handle drives the lifting slider to precisely rise and fall along the axial guide rail.

[0011] Furthermore, the quick centering mechanism includes a centering push rod, a guide rail base, an eccentric arc cam, a handle, a spring, a radial locking nut, a stop sleeve, a radial guide rail, a fixed shaft, a bearing stop sleeve, an angular contact ball bearing, a bearing seat and a bearing end cover, wherein the fixed shaft is fixed to the top of the lifting slider; the radial guide rail is installed on the guide rail base to guide multiple centering push rods to slide radially, and a spring is provided at the tail of the centering push rod; the stop sleeve is installed on the fixed shaft to limit the position of the angular contact ball bearing on the fixed shaft; the fixed shaft passes through the guide rail base, and the two ends are supported in the bearing seat by angular contact ball bearings respectively. The two angular contact ball bearings are separated and positioned by the bearing stop sleeve and encapsulated by the bearing end cover; finally, all parts on the fixed shaft are locked by the radial locking nut; the eccentric arc cam is installed on the top of the bearing seat by a screw, and its outer edge contacts the centering push rod; the handle is fixed to the end of the bearing seat to drive the eccentric arc cam to rotate.

[0012] Furthermore, the cam-type rotary quick clamping mechanism includes a pad, a mounting frame, a mechanism housing, a head and a cam handle. The mechanism housing is installed on the mounting frame, the head is fixed to the mounting frame by bolts, the cam handle is hinged to the mounting frame, the pad is installed at the lower end of the mounting frame and fixed to the upper end face of the housing. Finally, by rotating the cam handle, the head is pushed to move linearly to clamp the gear ring.

[0013] Furthermore, the working method of the thin-walled inner gear ring quick centering and grinding fixture includes the following steps:

[0014] Step 1: Install the thin-walled internal gear ring quick centering and grinding fixture on the grinding machine workbench, align the center of the thin-walled internal gear ring quick centering and grinding fixture, and control the coaxiality error between the thin-walled internal gear ring quick centering and grinding fixture and the machine tool to be less than 0.01mm.

[0015] Step 2: Place the ring gear on the upper end surface of the housing;

[0016] Step 3: Press down the handle of the connecting rod lifting mechanism to make the quick centering mechanism rise;

[0017] Step 4: Rotate the quick centering mechanism handle clockwise to quickly center the gear ring;

[0018] Step 5: Rotate and tighten the cam-type quick-clamping mechanism to secure the ring gear;

[0019] Step 6: Rotate the quick centering mechanism handle counterclockwise to retract the quick centering mechanism inward;

[0020] Step 7: Release the handle of the quick centering mechanism and restore the connecting rod lifting mechanism to its initial state.

[0021] Step 8: Enter the gear ring grinding process;

[0022] Step 9: After the gear grinding is completed, loosen and rotate the cam-type rotary quick clamping mechanism to remove the gear ring.

[0023] Step 10: Go to step 2 to process the next gear ring.

[0024] Compared with the existing gear grinding fixture, the present invention has the following advantages:

[0025] 1. This invention uses an eccentric cambered cam for centering, replacing traditional methods like hammer centering. Automatically aligning the ring gear by moving the eccentric cambered cam with a handle significantly reduces manual centering time and improves ring gear production efficiency. The eccentric cambered cam is designed to precisely match the contour of the tooth addendum, ensuring accurate and stable centering.

[0026] 2. This invention utilizes a quick centering mechanism and a cam-type, rotating, quick clamping mechanism, simplifying and facilitating the centering and clamping of the ring gear. Workers simply follow established procedures. Centering and clamping can be accomplished through simple operations such as pressing a handle or rotating a knob, eliminating unnecessary operator intervention and reducing operator skill requirements.

[0027] 3. The present invention utilizes a cam-type, rotating, quick-clamping mechanism, replacing the pressure plate clamping method. This mechanism achieves rapid clamping while ensuring consistent and evenly distributed clamping force at each clamping position. This improvement effectively reduces workpiece deformation and machining errors caused by uneven clamping, while also minimizing errors that may be introduced by human factors during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an assembly diagram of the present invention.

[0029] Figure 2 Schematic diagram of the quick centering mechanism of the present invention.

[0030] Figure 3 for Figure 2 AA cross-sectional diagram of .

[0031] Figure 4 Schematic diagram of the connecting rod lifting mechanism of the centering device of the present invention.

[0032] Figure 5 This is a diagram of the cam-type rotary quick clamping mechanism of the present invention.

[0033] Figure 6 It is a structural diagram of the shell of the present invention.

[0034] Figure 7 This is a schematic diagram of the ring gear of a planetary reducer.

[0035] In the figure: 10-housing, 20-connecting rod lifting mechanism, 30-gear ring, 40-quick centering mechanism, 50-cam type rotating quick clamping mechanism; 101-lower housing, 102-upper housing; 201-lifting slider, 202-ear seat, 203-connecting rod I, 204-axial guide rail, 205-connecting rod II, 206-connecting rod III, 207-connecting rod IV, 208-handle, 209-lifting bracket; 401-centering Push rod, 402-guide rail base, 403-eccentric arc cam, 404-handle, 405-spring, 406-radial locking nut, 407-stop sleeve, 408-radial guide rail, 409-fixed shaft, 410-bearing stop sleeve, 411-angular contact ball bearing, 412-bearing seat, 413-bearing end cover; 501-spacer, 502-mounting frame, 503-mechanism housing, 504-head, 505-cam handle. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] like Figure 1-7 As shown, a fixture for quick centering and grinding thin-walled internal gear rings includes a housing 10, a connecting rod lifting mechanism 20, a quick centering mechanism 40, and a quick cam rotary quick clamping mechanism 50. The connecting rod lifting mechanism 20 is mounted on the base of the housing 10 and is driven up and down by a handle 208. The fixed shaft 409 of the quick centering mechanism 40 is fixedly connected to the top of the connecting rod lifting mechanism 20 via an angular contact ball bearing 411. The centering push rod 401 inside the quick centering mechanism 40 contacts the ring gear 30 through radial movement. The ring gear 30 is placed on the upper end surface of the housing 10, and the tooth top circle of the ring gear 30 is centered by the radially extending push rod of the quick centering mechanism 40. The quick cam rotary quick clamping mechanism 50 is fixedly mounted on the side of the housing 10, and the head 504 of the quick cam rotary quick clamping mechanism 50 axially presses the centered end surface of the ring gear 30.

[0038] Furthermore, the housing 10 is composed of a lower housing 101 and an upper housing 102 fixedly connected by bolts.

[0039] Furthermore, the connecting rod lifting mechanism 20 includes a lifting slider 201, an ear seat 202, a connecting rod I 203, an axial guide rail 204, a connecting rod II 205, a connecting rod III 206, a connecting rod IV 207, a handle 208 and a lifting bracket 209, the lower end of the connecting rod I 203, the left end of the connecting rod II 205 and the upper end of the connecting rod III 206 are hinged together, the upper end of the connecting rod I 203 is hinged to the ear seat 202 on the lifting slider 201, the other end of the connecting rod II 205 is hinged to the upper part of the connecting rod IV 207, the handle 208 is installed at the upper end of the connecting rod IV 207, and the lower ends of the connecting rods III 206 and IV 207 are hingedly mounted on the lifting bracket 209. The connecting rod I 203 , the connecting rod II 205 , the connecting rod III 206 , and the connecting rod IV 207 constitute a spatial linkage mechanism, and the handle 208 is pushed to drive the lifting slide 201 to accurately rise and fall along the axial guide rail 204 .

[0040] Furthermore, the quick centering mechanism 40 includes a centering push rod 401, a guide rail base 402, an eccentric arc cam 403, a handle 404, a spring 405, a radial locking nut 406, a stopper sleeve 407, a radial guide rail 408, a fixed shaft 409, a bearing stopper sleeve 410, an angular contact ball bearing 411, a bearing seat 412 and a bearing end cover 413. The fixed shaft 409 is fixed to the top of the lifting slider 201; the radial guide rail 408 is installed on the guide rail base 402 to guide the radial sliding of multiple centering push rods 401, and a spring 405 is provided at the tail of the centering push rod 401; the stopper sleeve 407 is installed on the fixed shaft 40 9, used to limit the position of the angular contact ball bearing 411 on the fixed shaft 409; the fixed shaft 409 passes through the guide rail base 402, and both ends are supported in the bearing seat 412 by angular contact ball bearings 411, and the two angular contact ball bearings 411 are separated and positioned by the bearing stop sleeve 410, and are encapsulated by the bearing end cover 413; finally, all parts on the fixed shaft 409 are locked by the radial locking nut 406; the eccentric arc cam 403 is installed on the top of the bearing seat 412 by screws, and its outer edge contacts the centering push rod 401; the handle 404 is fixed to the end of the bearing seat 412 to drive the eccentric arc cam 403 to rotate.

[0041] Furthermore, the quick cam type rotating quick clamping mechanism 50 includes a pad 501, a mounting frame 502, a mechanism housing 503, a head 504 and a cam handle 505. The mechanism housing 503 is installed on the mounting frame 502, the head 504 is fixed to the mounting frame 502 by bolts, and the cam handle 505 is hinged to the mounting frame 502. The pad 501 is installed at the lower end of the mounting frame 502 and fixed to the upper end surface of the housing 10. Finally, by rotating the cam handle 505, the head 504 is pushed to move linearly to clamp the gear ring 30.

[0042] The method of use of the present invention is as follows: A quick centering and grinding fixture for thin-walled internal gear rings (hereinafter referred to as the fixture) should be assembled first to ensure that the fixture's own accuracy meets the requirements. Secondly, a cylindrical sample with good cylindricity and coaxiality of the inner and outer circles should be prepared as a reference standard for centering the fixture and the grinder. Finally, a dial indicator should be prepared and the mounting surfaces of the fixture and the workbench should be wiped clean to avoid additional errors. The specific method of use includes the following steps:

[0043] Step 1: Install the fixture on the grinder workbench. Using the dial indicator reading, continuously adjust the fixture position to align the center of the fixture. Strictly control the coaxiality error between the fixture and the machine center to within 0.01mm to ensure accurate centering of the gear ring.

[0044] Step 2: Place the gear ring 30 to be processed steadily and evenly on the upper end surface of the shell 10 composed of the lower shell 101 and the upper shell 102, ensuring that the gear ring 30 can contact each positioning block and that the quick centering mechanism 40 at the minimum diameter can pass through, thus preparing for subsequent centering and clamping operations.

[0045] Step 3: Operate the connecting rod lifting mechanism 20 by pressing down on handle 208. This movement of handle 208 moves connecting rods II 205, III 206, and IV 207. This movement of the connecting rods causes the lifting slider 201 to slide upward along the axial guide rail 204, thereby raising the lifting bracket 209 connected to the lifting slider 201, ultimately raising the quick centering mechanism 40 to the desired position.

[0046] Step 4: Rotate the handle 404 clockwise along the groove of the upper shell 101 to rotate the eccentric arc cam 403, which pushes the centering push rod 401 outward along the radial guide rail 408. The centering push rod 401 precisely matches the contour of the tooth top circle of the ring gear 30. When multiple centering push rods 401 simultaneously abut against the tooth top circle of the ring gear 30, the ring gear 30 can be quickly centered. The guide rail base 402 provides stable support for the quick centering mechanism 40, and the spring 405 acts as a buffer and reset. Components such as the radial locking nut 406, the stopper sleeve 407, the fixed shaft 409, the bearing stopper sleeve 410, the angular contact ball bearing 411, the bearing seat 412, and the bearing end cover 413 ensure the stability and accuracy of the rotation of the eccentric arc cam 403.

[0047] Step 5: Rotate and tighten the cam-type quick-clamping mechanism 50. The cam-type quick-clamping mechanism 50 acts on the ring gear 30 with a uniform and consistent clamping force, firmly fixing the ring gear 30 on the fixture to prevent the ring gear 30 from shifting during the gear grinding process.

[0048] Step 6: Rotate the handle 404 counterclockwise along the groove of the upper shell 101 , and the eccentric arc cam 403 rotates in the opposite direction. Under the action of the spring 405 , the centering push rod 401 contracts inward along the radial guide rail 408 .

[0049] Step 7: Slowly lower the handle 208 to restore the connecting rod lifting mechanism 20 to its initial state. The specific method is opposite to step 3 and will not be repeated here.

[0050] Step 8: On the basis of ensuring that the grinding wheel does not grind the cam-type rotary quick clamping mechanism 50 , the gear ring 30 is ground.

[0051] Step 9: After the gear grinding process is completed, loosen and rotate the cam-type rotary quick clamping mechanism 50 to remove the processed gear ring 30 from the fixture.

[0052] Step 10: For the processing of the remaining gear rings 30, it is only necessary to repeat the above-mentioned steps 2 to 9 to complete the gear grinding processing of multiple gear rings efficiently and accurately.

[0053] The present invention is not limited to this embodiment, and any equivalent concepts or modifications within the technical scope disclosed by the present invention are included in the protection scope of the present invention.

Claims

1. A quick centering and grinding fixture for thin-walled internal gear ring, characterized by: The invention comprises a housing (10), a connecting rod lifting mechanism (20), a quick centering mechanism (40) and a quick cam type rotating quick clamping mechanism (50), wherein the connecting rod lifting mechanism (20) is installed on the base of the housing (10) and is driven to rise and fall by a handle (208); the fixed shaft (409) of the quick centering mechanism (40) is fixedly connected to the top of the connecting rod lifting mechanism (20) through an angular contact ball bearing (411); the centering push rod (401) inside the quick centering mechanism (40) contacts the gear ring (30) through radial movement; the gear ring (30) is placed on the upper end face of the housing (10), and the tooth top circle of the gear ring (30) is centered by the radially extending push rod of the quick centering mechanism (40); the quick cam type rotating quick clamping mechanism (50) is fixedly installed on the side face of the housing (10), and the head (504) of the quick cam type rotating quick clamping mechanism (50) presses the end face of the centered gear ring (30) from the axial direction.

2. A quick centering and grinding fixture for thin-walled internal gear ring according to claim 1, characterized in that: The housing (10) is composed of a lower housing (101) and an upper housing (102) fixedly connected by bolts.

3. The quick centering and grinding fixture for thin-walled internal gear ring according to claim 1, characterized in that: The connecting rod lifting mechanism (20) comprises a lifting slider (201), an ear seat (202), a connecting rod I (203), an axial guide rail (204), a connecting rod II (205), a connecting rod III (206), a connecting rod IV (207), a handle (208) and a lifting bracket (209). The lower end of the connecting rod I (203), the left end of the connecting rod II (205) and the upper end of the connecting rod III (206) are hinged together, and the upper end of the connecting rod I (203) is hinged to the ear seat (202) on the lifting slider (201). The other end of the connecting rod II (205) is hinged to the upper part of the connecting rod IV (207), the handle (208) is installed on the upper end of the connecting rod IV (207), and the lower ends of the connecting rod III (206) and the connecting rod IV (207) are hinged and installed on the lifting bracket (209); the connecting rod I (203), the connecting rod II (205), the connecting rod III (206), and the connecting rod IV (207) constitute a spatial linkage mechanism, and pushing the handle (208) drives the lifting slider (201) to accurately rise and fall along the axial guide rail (204).

4. The quick centering and grinding fixture for thin-walled internal gear ring according to claim 1, characterized in that: The quick centering mechanism (40) comprises a centering push rod (401), a guide rail base (402), an eccentric arc cam (403), a handle (404), a spring (405), a radial locking nut (406), a stopper sleeve (407), a radial guide rail (408), a fixed shaft (409), a bearing stopper sleeve (410), an angular contact ball bearing (411), a bearing seat (412) and a bearing end cover (413), wherein the fixed shaft (409) is fixed to the top of the lifting slider (201); the radial guide rail (408) is installed on the guide rail base (402) to guide the radial sliding of the plurality of centering push rods (401); a spring (405) is provided at the tail of the centering push rod (401); the stopper sleeve (407) is installed on the fixed shaft (409) is used to limit the position of the angular contact ball bearing (411) on the fixed shaft (409); the fixed shaft (409) passes through the guide rail base (402), and the two ends are supported in the bearing seat (412) by the angular contact ball bearings (411), and the two angular contact ball bearings (411) are separated and positioned by the bearing stopper (410) and encapsulated by the bearing end cover (413); finally, all parts on the fixed shaft (409) are locked by the radial locking nut (406); the eccentric arc cam (403) is installed on the top of the bearing seat (412) by screws, and its outer edge contacts the centering push rod (401); the handle (404) is fixed to the end of the bearing seat (412) to drive the eccentric arc cam (403) to rotate.

5. The quick centering and grinding fixture for thin-walled internal gear ring according to claim 1, characterized in that: The quick cam type rotating quick clamping mechanism (50) comprises a pad (501), a mounting frame (502), a mechanism housing (503), a head (504) and a cam handle (505); the mechanism housing (503) is mounted on the mounting frame (502); the head (504) is fixed to the mounting frame (502) by bolts; the cam handle (505) is hinged to the mounting frame (502); the pad (501) is mounted on the lower end of the mounting frame (502) and fixed to the upper end surface of the housing (10); and finally, by rotating the cam handle (505), the head (504) is pushed to move linearly to clamp the gear ring (30).

6. The quick centering and grinding fixture for thin-walled internal gear ring according to claim 1, characterized in that: The working method of the thin-walled inner gear ring quick centering and grinding fixture comprises the following steps: Step 1: Install the quick centering and grinding fixture for thin-walled internal gear ring on the grinding machine workbench, align the center of the quick centering and grinding fixture for thin-walled internal gear ring, and control the coaxiality error between the quick centering and grinding fixture for thin-walled internal gear ring and the machine tool to be less than 0.01mm; Step 2: Place the ring gear (30) on the upper end surface of the housing (10); Step 3: Press down the handle (208) of the connecting rod lifting mechanism (20) to raise the quick centering mechanism (40); Step 4: Rotate the handle (404) of the quick centering mechanism (40) clockwise to achieve quick centering of the gear ring (30); Step 5: Rotate and tighten the quick cam type rotating quick clamping mechanism (50) to fix the ring gear (30); Step 6: Rotate the handle (404) of the quick centering mechanism (40) counterclockwise to achieve inward contraction of the quick centering mechanism (40); Step 7: Release the handle (404) of the quick centering mechanism (40) to restore the connecting rod lifting mechanism (20) to its initial state; Step 8: Enter the gear grinding process of the ring gear (30); Step 9: After the gear grinding is completed, loosen and rotate the quick cam type rotating quick clamping mechanism (50) to remove the gear ring (30); Step 10: Go to step 2 to process the next gear ring (30).

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