A gear inner hole grinding and polishing equipment

Abstract

The present invention relates to the field of grinding technology, and discloses a gear inner hole grinding and polishing equipment, including a frame, a processing part is installed inside the frame, a driving motor for driving the processing part is installed outside the frame, and the processing part includes: a clamping part for clamping the gear; a polishing part connected to the driving motor, which is sleeved inside the clamping part and used for polishing the gear hole. The present invention can clamp multiple identical or single gears through the clamping part, the clamping range can be adjusted, the expansion range of the polishing part can also be adjusted, different gear holes can be polished, and the gears can be clamped and polished quickly; the gears have single teeth and double teeth, and multiple clamping shafts are rotated to change their positions, and the outer side of the gear is squeezed with the triangular position of the clamping shaft and fits in the meshing teeth, making the fixation more secure while also achieving clamping.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, in particular to a gear inner hole grinding and polishing device. Background Art

[0002] In the prior art, a rotary polishing tool is commonly used to polish the inner hole of a gear. A rotary polishing tool is a tool that polishes the surface of a workpiece by rotating. It is usually composed of a polishing wheel, a motor, and a control system. The polishing wheel is attached with polishing materials (such as polishing cloth, polishing sheet, etc.), and is driven to rotate by a motor to perform friction polishing on the surface or inner hole of the workpiece.

[0003] Before and during polishing, the gear inner hole needs to be clamped. Mechanical clamping is a commonly used clamping method. The gear is positioned and clamped by a fixture, and the gear and the grinding equipment must be coaxial. The clamping force should be moderate to ensure that the gear does not move or fall off during polishing, and to avoid deformation or damage to the gear due to excessive clamping.

[0004] At present, different clamping fixtures need to be designed and used for gears with different diameters and inner holes, which mainly depends on the specific shape, size, material and processing accuracy requirements of the gear. In addition, in the process of polishing the inner hole, it is also necessary to adjust the polishing equipment to avoid excessive squeezing with the inner hole of the gear, and to detect the degree of polishing of the inner hole of the gear to prevent the inner hole of the gear from being over-polished. Based on this, in the process of polishing the gear, both the clamping equipment and the polishing equipment need to spend a lot of time to adjust to the optimal state. When processing batches of different types of gears, the time cost required is huge. Based on this problem, the applicant proposes an improved device for the equipment. Summary of the invention

[0005] The object of the present invention is to provide a gear inner hole grinding and polishing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a gear inner hole grinding and polishing device, comprising a frame, a processing part is installed inside the frame, and a driving motor for driving the processing part to work is installed outside the frame, and the processing part includes:

[0007] A clamping portion, used for clamping the gear;

[0008] The polishing part is connected to the driving motor and is sleeved inside the clamping part for polishing the gear hole;

[0009] Wherein, the clamping part and the polishing part can be expanded or contracted, and are used for processing different types of gears.

[0010] Further, the clamping part includes a plurality of groups of circumferentially distributed clamping shafts, a clamping ring 1 and a clamping ring 2 are respectively provided at both ends of the clamping shaft, a circle of slide groove is provided on the outer side of the clamping ring 1 and the clamping ring 2, the axis of the slide groove coincides with the axis of the clamping ring 1 and the clamping ring 2, both ends of the clamping shaft are hinged with a connecting shaft 1, the outer end of the connecting shaft 1 is hinged with a slider, and the slider is slidably arranged in the slide groove;

[0011] By changing the distance between the clamping ring 1 and the clamping ring 2, the diameter of the circle formed by the multiple groups of clamping shafts can be changed, so as to clamp gears with different diameters.

[0012] Furthermore, the cross section of the clamping shaft is an inwardly facing triangle.

[0013] Furthermore, the clamping ring 1 is fixed inside the frame, and the inner side surface of the clamping ring 1 has a resistance layer extending inward, and the resistance layer is used to resist the gear.

[0014] Furthermore, two groups of sheet metal pieces are provided through the clamping ring 2, and the clamping ring 2 can move along the sheet metal pieces. A supporting sheet metal fixed to the outer side of the frame is fixed to the inner end of the sheet metal piece. The supporting sheet metal is used to support the clamping ring 2. A connection point is provided on the outer arc surface of the clamping ring 2, and a fastening bolt is rotatably installed on the connection point. The fastening bolt passes through the sheet metal piece, and the two are threadedly connected. Rotating the fastening bolt controls the movement of the clamping ring 2.

[0015] Furthermore, a blocking portion is provided on the outer side of the clamping portion, and the blocking portion includes a fixing frame, a fixing bolt and a supporting shaft rod. The fixing frame is fixed to the outer side of the frame, and the outer end of the fixing frame is in the shape of a circular sleeve. The supporting shaft rod is sleeved in the circular sleeve of the fixing frame. The fixing bolt is threadedly connected to the upper end of the fixing frame for squeezing the supporting shaft rod, and the supporting shaft rod is used to squeeze the gear.

[0016] Furthermore, the polishing part includes a plurality of polishing shafts distributed in a circle, both ends of the plurality of polishing shafts are hinged with a connecting shaft 2, the outer ends of the connecting shafts 2 on both sides are respectively provided with fixed ends, the two fixed ends are respectively hinged with the connecting shafts 2 on both sides, the outer side surfaces of the two fixed ends are both polygonal protrusions, the outer end sleeves of the fixed ends are provided with support sleeves that cooperate with the protrusions of the outer side surfaces of the fixed ends, the support sleeve on one side is fixed to the output end of the driving motor, and a blocking part 2 is provided on the outer side of the support sleeve on the other side, and the blocking part 2 is used to support the polishing part.

[0017] Furthermore, the outward side surface of the polishing shaft is arc-shaped and is used for polishing the gear hole.

[0018] Furthermore, the second blocking part includes a second blocking frame, a second fixing bolt, a second supporting shaft rod and a circular sleeve;

[0019] The second blocking frame is fixed to the outside of the frame, and the outer end of the second blocking frame is also arranged in a circular sleeve, and the second supporting shaft rod is sleeved therein. The second fixing bolt is threadedly connected to the outside of the second blocking frame, and the second fixing bolt is used to squeeze the second supporting shaft rod. The inner end of the second supporting shaft rod is fixed to the circular sleeve, and the circular sleeve is sleeved with the support sleeve on the other side.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] 1. The clamping part can clamp multiple identical or single gears, the clamping range can be adjusted, the expansion range of the polishing part can also be adjusted, different gear holes can be polished, and the gears can be clamped and polished quickly.

[0022] 2. The gears have single-tooth and double-tooth variations. By rotating multiple clamping shafts and changing their positions, the outer side of the gears are squeezed into the triangular shape of the clamping shafts and fit into the meshing teeth, making the fixation more secure while also achieving clamping.

[0023] 3. The process of extruding the inner hole of the gear is controlled by supporting the second shaft rod, which can change the extrusion force of polishing to avoid damage to the gear. The polishing shaft moves outward at a distance that is in linear contact with the gear hole to achieve polishing, avoiding uneven polishing caused by large changes in the contact position of the outer side of the polishing shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the installation position structure of the processing part of the present invention;

[0027] Figure 3 It is a schematic diagram of the overall structure of the processing part of the present invention;

[0028] Figure 4 It is a schematic diagram of the installation position structure of the clamping part of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the clamping part and the blocking part of the present invention;

[0030] Figure 6 The present invention Figure 5 A is a schematic diagram of the partially enlarged structure of the middle part;

[0031] Figure 7This is a schematic diagram of the structure of the support shaft of the present invention;

[0032] Figure 8 It is a schematic diagram of the installation position structure of the polishing part of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the polishing part of the present invention;

[0034] Fig.10 It is a schematic diagram of the clamping structure of the clamping shaft and the polishing shaft of the present invention.

[0035] In the figure: 1. frame; 11. driving motor; 2. processing part; 3. clamping part; 31. clamping shaft; 32. connecting shaft one; 33. slider; 34. clamping ring one; 35. clamping ring two; 36. slide groove; 37. blocking layer; 38. supporting sheet metal; 39. sheet metal piece; 301. connection point; 302. fastening bolt; 4. blocking part one; 41. fixing frame one; 42. fixing bolt one; 43. supporting shaft rod one; 5. polishing part; 51. polishing shaft; 52. connecting shaft two; 53. fixing end; 54. supporting sleeve; 6. blocking part two; 61. blocking frame two; 62. fixing bolt two; 63. supporting shaft rod two; 64. circular sleeve. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 10 The present invention provides a technical solution: There are some clamping and polishing positions in the polishing of gear holes. How to quickly realize the polishing of gears and the polishing of different gears are the problems to be solved at present. For this purpose, a gear inner hole grinding and polishing device is proposed, such as Figure 1 As shown, the frame 1 includes a processing unit 2 installed inside the frame 1, and a driving motor 11 for driving the processing unit 2 to work is installed outside the frame 1. Figure 2 The various structures of the processing part 2 are shown, and the processing part 2 includes:

[0038] A clamping portion 3, used for clamping the gear;

[0039] The polishing part 5 is connected to the driving motor 11 and is sleeved inside the clamping part 3 for polishing the gear hole;

[0040] The clamping portion 3 and the polishing portion 5 can both be expanded or contracted for processing different types of gears.

[0041] like Figure 4 The position where the clamping part 3 is installed, such as Figure 5 For each structure of the clamping part 3, the clamping part 3 includes multiple groups of circumferentially distributed clamping shafts 31, and the two ends of the clamping shaft 31 are respectively provided with a clamping ring 1 34 and a clamping ring 2 35, and the outer sides of the clamping ring 1 34 and the clamping ring 2 35 are provided with a circle of sliding groove 36, and the axis of the sliding groove 36 coincides with the axis of the clamping ring 1 34 and the clamping ring 2 35. Both ends of the clamping shaft 31 are hinged with a connecting shaft 1 32, and the outer end of the connecting shaft 1 32 is hinged with a slider 33, and the slider 33 is slidably arranged in the sliding groove 36. Multiple groups of clamping shafts 31 are used to clamp the gears. When the multiple groups of clamping shafts 31 are clamped subsequently, the distance of inward movement is the same, and the axis will not change, so that the axis of the gear coincides with the central axis of the multiple groups of clamping shafts 31, so as to achieve the clamping of the gear. At the same time, the slider 33 can change its position, and the triangular cross-section of the clamping shaft 31 can be matched with the meshing teeth for different gears.

[0042] By changing the spacing between the clamping ring 1 34 and the clamping ring 2 35, the diameter of the circle formed by the multiple groups of clamping shafts 31 can be changed, which is used to clamp gears of different diameters. When the position between the clamping ring 1 34 and the clamping ring 2 35 changes, the connecting shaft 1 32 near the two ends can be stretched, so that the inclination degree of the connecting shaft 1 32 changes, and the multiple groups of clamping shafts 31 can move inward to the same extent to achieve clamping.

[0043] like Fig.10 As shown, the cross section of the clamping shaft 31 is an inwardly facing triangle, which can mesh with the gear teeth to prevent the gear from rotating during polishing and further reach the limit.

[0044] like Figure 5 As shown, the clamping ring 34 is fixed inside the frame 1, and the inner side of the clamping ring 34 has a blocking layer 37 extending inward, and the blocking layer 37 is used to resist the gear so that the blocking layer 37 limits the gear to prevent the gear from affecting the tilt change of the connecting shaft 32.

[0045] like Figure 6 As shown, the clamping ring 35 can move outward so that the clamping part 3 can achieve the clamping effect. Two groups of sheet metal pieces 39 are provided on the clamping ring 35. The clamping ring 35 can move along the sheet metal pieces 39. The inner end of the sheet metal piece 39 is fixed with a supporting sheet metal 38 fixed to the outer side of the frame 1. The supporting sheet metal 38 is used to support the clamping ring 35. The outer arc surface of the clamping ring 35 has a connection point 301. A fastening bolt 302 is rotatably installed on the connection point 301. The fastening bolt 302 penetrates the sheet metal piece 39, and the two are threadedly connected. The fastening bolt 302 is rotated to control the movement of the clamping ring 35. The gear can be fixed to the maximum extent by operating through the fastening bolt 302. At the same time, the fastening bolt 302 has a self-locking effect to avoid loosening.

[0046] like Figure 5 As shown, a blocking part 4 is also provided on the outer side of the clamping part 3, and the blocking part 4 includes a fixing frame 41, a fixing bolt 42 and a supporting shaft rod 43. The fixing frame 41 is fixed to the outer side of the frame 1, and the outer end of the fixing frame 41 is in the shape of a circular sleeve. The supporting shaft rod 43 is sleeved in the circular sleeve of the fixing frame 41. The fixing bolt 42 is threadedly connected to the upper end of the fixing frame 41, and is used to squeeze the supporting shaft rod 43. The supporting shaft rod 43 is used to squeeze the gear. The supporting shaft rod 43 in the blocking part 4 is pushed artificially, and the fixing bolt 42 squeezes the supporting shaft rod 43 to achieve fixation. The supporting shaft rod 43 abuts the arranged gears to ensure that the gears are clamped, and some gears are thin, which makes it easy for the gears to shift when clamped, but after being abutted, the gears can be limited to the greatest extent, so that the axis of the gear coincides with the central axis of the clamping part 3.

[0047] In addition, if Figure 7 As shown, the position of the support shaft 43 does not contact the position where the gear needs to be processed, so as to avoid interference with the processing of the gear.

[0048] like Figure 8 The installation position of the polishing part 5 is shown. Fig. 9 The polishing part 5 is a structure of each part. The polishing part 5 includes a plurality of polishing shafts 51 distributed in a circumference. Both ends of the plurality of polishing shafts 51 are hinged with connecting shafts 52. The outer ends of the connecting shafts 52 on both sides are respectively provided with fixed ends 53. The two fixed ends 53 are respectively hinged with the connecting shafts 52 on both sides. The outer sides of the two fixed ends 53 are both polygonal protrusions. The outer ends of the fixed ends 53 are sleeved with support sleeves 54 that match the protrusions of the outer sides of the fixed ends 53. The support sleeve 54 on one side is fixed to the output end of the driving motor 11. The outer side of the support sleeve 54 on the other side is provided with a blocking part 6. The blocking part 6 is used to support the polishing part 5. One end of the polishing part 5 is limited by the driving motor 11, and the other end is squeezed by the blocking part 6, so that it can move inward, so that the polishing part 5 can be stretched or squeezed, and the inclination degree of the connecting shaft 52 is changed, so that the polishing shaft 51 can contact and squeeze the gear hole. It should also be noted that the polishing part 5 can be installed and disassembled by separating or cooperating with the fixed end 53 and the support sleeve 54, and the polishing part 5 can be installed after the gear is fixed, which is convenient for operation. It should also be noted that the support sleeve 54 at one end is fixed to the driving motor 11, and the support sleeve 54 at the other end is connected with the circular sleeve 64, so that the polishing part 5 can rotate with the driving motor 11.

[0049] like Fig.10 As shown, the outward side of the polishing shaft 51 is arc-shaped and is used to polish the gear hole to achieve line contact. Contact is achieved for gears of different sizes, and the degree of contact varies little, making it easy to control the amount of polishing.

[0050] like Fig. 9 The structure shown also has a second blocking part 6, which includes a second blocking frame 61, a second fixing bolt 62, a second supporting shaft rod 63 and a circular sleeve 64;

[0051] The blocking frame 61 is fixed to the outside of the frame 1, and the outer end of the blocking frame 61 is also set in a circular sleeve, and the supporting shaft rod 63 is sleeved therein. The fixing bolt 62 is threadedly connected to the outside of the blocking frame 61, and the fixing bolt 62 is used to squeeze the supporting shaft rod 63. The inner end of the supporting shaft rod 63 is fixed to the circular sleeve 64, and the circular sleeve 64 is sleeved with the supporting sleeve 54 on the other side. The support shaft rod 63 is extended and retracted to control the amount of outward movement of the polishing shaft 51 to ensure that the outer side of the polishing shaft 51 contacts or squeezes the inner wall of the gear hole to achieve polishing, and the supporting shaft rod 63 is fixed by the fixing bolt 62.

[0052] The working principle of the present invention is as follows: multiple gears of the same size are arranged and clamped inside the clamping part 3, the blocking part 2 6 is opened, and the polishing part 5 is extended from the outside to the inside of the multiple gears, the polishing part 5 is connected to the driving motor 11, and the polishing part 5 is squeezed to expand, and the driving motor 11 is operated to realize the polishing part 5 polishing the inside of the gear hole. The clamping part 3 can clamp multiple identical or single gears, the clamping range can be adjusted, and the expansion range of the polishing part 5 can also be adjusted to polish different gear holes, and the gears can be clamped and polished quickly. The specific working process is as follows:

[0053] First, the multiple clamping shafts 31 are rotated to make the slider 33 move along the slide groove 36, and the position of the clamping shaft 31 is changed, so that the gear can be directly placed from the upper end of the frame 1 to the inside of the clamping part 3. Then, the clamping shaft 31 is reset, and the fastening bolt 302 is rotated. The fastening bolt 302 pulls the clamping ring 2 35 outward, so that the inclination of the connecting shaft 1 32 changes, so that the clamping shaft 31 moves inward, and the gear is limited. The gear is limited in the circumferential direction by the multiple clamping shafts 31, so that the gear axis coincides with the axis of the clamping part 3, and the clamping of the gear is completed;

[0054] When the number of gears is small, the support shaft 43 can be pushed so that the support shaft 43 squeezes the outside of the gears, and multiple sets of gears are overlapped and pressed against the blocking layer 37, and the fixing bolts 42 are tightened to prevent the gears from tilting or shifting during polishing.

[0055] When the gear is clamped as described above, the gear has single teeth and double teeth. The multiple clamping shafts 31 are rotated and changed in position so that the outer side of the gear is squeezed against the triangular position of the clamping shaft 31 and fits into the meshing teeth, making the fixation more secure while also achieving clamping.

[0056] Secondly, install the polishing part 5 so that the fixed end 53 at the inner end cooperates with the support sleeve 54 at the output end of the drive motor 11, and the outer fixed end 53 cooperates with the outer support sleeve 54, and the outer support sleeve 54 is sleeved in the circular sleeve 64. By pushing the supporting shaft rod 63, the connecting shaft 52 is tilted to achieve the outward expansion of the polishing shaft 51 and abutment against the inner wall of the gear hole, and then tighten the fixing bolt 62.

[0057] The above-mentioned process of squeezing the inner hole of the gear is controlled by supporting the second shaft 63, which can change the extrusion force of polishing and avoid damage to the gear. In addition, the side surface of the polishing shaft 51 facing outward is arc-shaped, and the polishing shaft 51 is in linear contact with the gear hole regardless of the distance it moves outward, thereby achieving polishing and avoiding uneven polishing due to large changes in the contact position of the outer side of the polishing shaft 51.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gear inner hole grinding and polishing device, characterized in that: The invention comprises a frame (1), a processing part (2) is installed inside the frame (1), a driving motor (11) for driving the processing part (2) to work is installed outside the frame (1), and the processing part (2) comprises: A clamping portion (3) used for clamping the gear; A polishing portion (5) connected to the driving motor (11), which is sleeved inside the clamping portion (3) and is used for polishing the gear hole; Wherein, the clamping portion (3) and the polishing portion (5) can both expand or contract, and are used for processing different types of gears; The clamping portion (3) comprises a plurality of groups of clamping shafts (31) distributed circumferentially, and a clamping ring 1 (34) and a clamping ring 2 (35) are respectively provided at two ends of the clamping shaft (31), and a circle of sliding groove (36) is provided on the outer sides of the clamping ring 1 (34) and the clamping ring 2 (35), and the axis of the sliding groove (36) coincides with the axis of the clamping ring 1 (34) and the clamping ring 2 (35), and the two ends of the clamping shaft (31) are hinged with a connecting shaft 1 (32), and the outer end of the connecting shaft 1 (32) is hinged with a sliding block (33), and the sliding block (33) is slidably arranged in the sliding groove (36); By changing the spacing between the clamping ring 1 (34) and the clamping ring 2 (35), the diameter of the circle formed by the multiple groups of clamping shafts (31) is changed, so as to clamp gears of different diameters.

2. The gear inner hole grinding and polishing equipment according to claim 1, characterized in that: The cross section of the clamping shaft (31) is in the shape of a triangle facing inwards.

3. The gear inner hole grinding and polishing equipment according to claim 1, characterized in that: The clamping ring 1 (34) is fixed inside the frame (1), and the inner side surface of the clamping ring 1 (34) has a resistance layer (37) extending inwards, and the resistance layer (37) is used to resist the gear.

4. The gear inner hole grinding and polishing equipment according to claim 1, characterized in that: The second clamping ring (35) is provided with two groups of sheet metal pieces (39) penetrating therethrough. The second clamping ring (35) can move along the sheet metal pieces (39). A supporting sheet metal (38) fixed to the outer side of the frame (1) is fixed to the inner end of the sheet metal piece (39). The supporting sheet metal (38) is used to support the second clamping ring (35). The outer arc surface of the second clamping ring (35) has a connection point (301). A fastening bolt (302) is rotatably mounted on the connection point (301). The fastening bolt (302) penetrates the sheet metal piece (39) and the two are threadedly connected. The fastening bolt (302) is rotated to control the movement of the second clamping ring (35).

5. The gear inner hole grinding and polishing equipment according to claim 1, characterized in that: A blocking portion (4) is also provided on the outer side of the clamping portion (3), and the blocking portion (4) comprises a fixing frame (41), a fixing bolt (42) and a supporting shaft (43). The fixing frame (41) is fixed to the outer side of the frame (1), and the outer end of the fixing frame (41) is in the shape of a circular sleeve. The supporting shaft (43) is sleeved in the circular sleeve of the fixing frame (41). The fixing bolt (42) is threadedly connected to the upper end of the fixing frame (41) and is used to squeeze the supporting shaft (43). The supporting shaft (43) is used to squeeze the gear.

6. The gear inner hole grinding and polishing equipment according to claim 1, characterized in that: The polishing part (5) comprises a plurality of polishing shafts (51) distributed in a circumference, both ends of the plurality of polishing shafts (51) are hingedly connected to a second connecting shaft (52), the outer ends of the second connecting shafts (52) on both sides are respectively provided with fixed ends (53), the two fixed ends (53) are respectively hingedly connected to the second connecting shafts (52) on both sides, the outer side surfaces of the two fixed ends (53) are both polygonal protrusions, the outer ends of the fixed ends (53) are sleeved with a support sleeve (54) that matches the protrusion of the outer side surface of the fixed end (53), the support sleeve (54) on one side is fixed to the output end of the drive motor (11), and the outer side of the support sleeve (54) on the other side is provided with a second blocking part (6), and the second blocking part (6) is used to support the polishing part (5).

7. The gear inner hole grinding and polishing equipment according to claim 6, characterized in that: The outwardly facing side surface of the polishing shaft (51) is arc-shaped and is used for polishing the gear hole.

8. The gear inner hole grinding and polishing equipment according to claim 6, characterized in that: The second blocking part (6) comprises a second blocking frame (61), a second fixing bolt (62), a second supporting shaft rod (63) and a circular sleeve (64); The second blocking frame (61) is fixed to the outside of the frame (1), and the outer end of the second blocking frame (61) is also arranged in a circular sleeve, and the second supporting shaft rod (63) is sleeved therein. The second fixing bolt (62) is threadedly connected to the outside of the second blocking frame (61), and the second fixing bolt (62) is used to squeeze the second supporting shaft rod (63). The inner end of the second supporting shaft rod (63) is fixed to the circular sleeve (64), and the circular sleeve (64) is sleeved with the supporting sleeve (54) on the other side.

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