Special fixture for grinding eccentric part with fixed angle

Abstract

The utility model relates to the technical field of clamps, in particular to a special clamp for grinding an eccentric part with a fixed angle, which comprises a first clamp main body assembled with a spindle hole of a grinding machine, a second clamp main body fixedly connected to one side of the first clamp main body, and a V-shaped groove bent plate fixedly mounted on one side face, far away from the first clamp main body, of the second clamp main body. An angle positioning pin is arranged in a V-shaped groove in the top of the V-shaped groove bent plate. The head of the small end of the eccentric shaft is pushed inwards along the V-shaped groove in the V-shaped groove bent plate, so that the small end of the eccentric shaft slightly rotates after touching the angle positioning pin, the boss block on the angle positioning pin is promoted to be clamped into the through groove to limit rotation of the eccentric shaft, the eccentric shaft is installed in place, then the eccentric shaft compression screw is screwed down, and the eccentric shaft can be installed in place. The eccentric shaft pressing screw moves downwards to press the transverse piece, the transverse piece is promoted to press the eccentric shaft to complete clamping of the eccentric shaft, operation is easy and fast, clamping is stable, and the grinding quality and efficiency of the eccentric shaft are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a special clamp for grinding fixed-angle eccentric pieces. Background Art

[0002] The eccentric shaft part is a component of the industrial sewing machine, which is widely used in the industrial sewing machine and has a large amount of use. The eccentric shaft part needs to be ground during the production process before use. Figure 6 As shown in the figure, its product features are: the eccentricity is at an angle of 20 degrees to the vertical direction of the axis, the small end head has a 1mm wide through slot, and due to the shape of the eccentric shaft part product structure, the clamping is not stable enough during the actual grinding process. Therefore, how to quickly ensure the stable clamping of the eccentric shaft during grinding, and improve the quality rate and efficiency of eccentric shaft grinding, are the goals pursued by every process technician. Utility Model Content

[0003] The utility model provides a special fixture for grinding a fixed-angle eccentric piece, so as to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A special fixture for grinding fixed angle eccentric parts, including a fixture body for assembly with a main shaft hole of a grinding machine, a fixture body 2 fixedly connected to one side of the fixture body 1, a V-groove bent plate fixedly installed on the side of the fixture body 2 away from the fixture body 1, an angle positioning pin is provided in the V-groove at the top of the V-groove bent plate, one end of the angle positioning pin has a boss block, the boss block is adapted to the through groove of the small end head of the eccentric shaft, and the top of the V-groove bent plate is fixedly connected to an eccentric shaft pressure plate and an angle positioning pin pressure plate, the eccentric shaft The pressure plate and the angle positioning pin pressure plate are both inverted U-shaped, and the top thread of the angle positioning pin pressure plate is penetrated by an angle positioning pin tightening screw, one end of the angle positioning pin tightening screw is arranged on the inner side of the angle positioning pin pressure plate, and abuts against the outer wall of the angle positioning pin, and the inner side wall of the eccentric shaft pressure plate is connected with a cross piece, and the top thread of the eccentric shaft pressure plate is penetrated by an eccentric shaft tightening screw, one end of the eccentric shaft tightening screw is arranged on the inner side of the eccentric shaft pressure plate, and abuts against the surface of the cross piece, and the cross piece presses the eccentric shaft through the action of the eccentric shaft tightening screw.

[0006] Preferably, a spacing area is provided between one end of the transverse piece and the inner side wall of the eccentric shaft pressure plate, and the width of the spacing area is 1 mm.

[0007] Preferably, a tapered shaft is provided on a side of the clamp body 1 away from the clamp body 2, the clamp body 1 is assembled with the main shaft hole of the grinder through the tapered shaft, and a pull rod is connected to the inner thread of the tapered shaft, and the clamp body 1 is tightened by passing the pull rod through the main shaft end hole of the grinder.

[0008] Preferably, fastening screw through holes are respectively provided on the surfaces of the eccentric shaft pressure plate, the V-groove bent plate and the angle positioning pin pressure plate, and fastening screws are respectively provided in the fastening screw through holes.

[0009] Preferably, a plurality of fastening screw holes are respectively provided on both sides of the V-groove at the top of the V-groove bent plate, and the plurality of fastening screw holes respectively correspond to the fastening screw through holes on the eccentric shaft pressure plate and the angle positioning pin pressure plate.

[0010] Preferably, there are two fastening screw through holes on the eccentric shaft pressure plate, and the two fastening screw through holes are symmetrically arranged with the eccentric shaft clamping screw as the symmetry axis, and the eccentric shaft pressure plate is detachably connected to the V-groove bent plate through the fastening screws.

[0011] Preferably, there are two fastening screw through holes on the angle positioning pin pressure plate, and the two fastening screw through holes are symmetrically arranged with the angle positioning pin pressing screw as the symmetry axis, and the angle positioning pin pressure plate is detachably connected to the V-groove bent plate through the fastening screws.

[0012] Preferably, a plurality of connecting screw holes are opened through the surface of the clamp body 2, and two of the connecting screw holes correspond to the fastening screw through holes on the V-groove bent plate, and the V-groove bent plate is detachably connected to the clamp body 2 by the fastening screws.

[0013] Preferably, a plurality of reverse hanging screw holes are opened through the surface of the clamp body one, and reverse hanging screws are respectively provided in the plurality of reverse hanging screw holes. The clamp body one is fixedly connected with the clamp body two by passing the reverse hanging screws through the connecting screw holes.

[0014] Preferably, the eccentric shaft pressure plate and the angle positioning pin pressure plate are respectively provided with tightening screw holes, and the eccentric shaft tightening screw and the angle positioning pin tightening screw are respectively arranged in the corresponding tightening screw holes.

[0015] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0016] The present invention can realize the installation of the eccentric shaft by pushing the head of the small end of the eccentric shaft inward along the V-groove on the V-groove bent plate, so that the small end of the eccentric shaft hits the angle positioning pin and rotates slightly, prompting the boss block on the angle positioning pin to be stuck in the through groove and limit the rotation of the eccentric shaft, thereby achieving the installation of the eccentric shaft in place, and then tightening the eccentric shaft clamping screw, so that the eccentric shaft clamping screw moves downward and presses the cross piece, prompting the cross piece to press the eccentric shaft to complete the clamping of the eccentric shaft. The operation is simple and fast, and the clamping is stable, which effectively improves the quality and efficiency of the eccentric shaft grinding.

[0017] In the utility model, when it is found that the eccentric angle of the product is incorrect, the through groove of the small end head of the eccentric shaft is clamped on the boss block on the angle positioning pin, so that the eccentric shaft is rotated after loosening the angle positioning pin tightening screw. The eccentric shaft can drive the angle positioning pin to change a certain angle, ensuring that the eccentric angle of the eccentric shaft product is in place, and then tighten the angle positioning pin tightening screw to tighten the angle positioning pin to complete the adjustment of the fixture. It is simple and quick, effectively saves machine adjustment time, and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the eccentric shaft pressure plate of the utility model.

[0021] Figure 4 This is a front view structural diagram of the eccentric shaft pressure plate of the present utility model.

[0022] Figure 5 This is a schematic diagram of the cooperation structure of the angle positioning pin and the eccentric shaft of the utility model.

[0023] Figure 6 Schematic diagram of the eccentric shaft parts structure.

[0024] In the figure: 1. Clamp body 1; 2. Reverse hanging screw; 3. Reverse hanging screw through hole; 4. Clamp body 2; 5. Connecting screw hole; 6. Eccentric shaft; 7. Angle positioning pin; 8. Eccentric shaft pressure plate; 9. Fastening screw through hole; 10. V-groove bent plate; 11. Fastening screw; 12. Eccentric shaft clamping screw; 13. Angle positioning pin pressure plate; 14. Angle positioning pin clamping screw; 15. Fastening screw screw hole; 16. Pull rod; 17. Cross piece; 18. Clamping screw screw hole. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0026] In the present invention, the term "plurality" refers to two or more than two, unless otherwise expressly defined. The term "and / or" used herein includes any and all combinations of one or more of the relevant listed items. Terms such as "installation", "connection", "connection", and "fixed" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] It should be noted that when an element is referred to as being "assembled to," "mounted to," "fixed to," or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] like Figures 1-6As shown, the utility model provides a special fixture for grinding fixed angle eccentric parts, including a fixture body 1 for assembling with the main shaft hole of the grinding machine, a fixture body 2 4 is fixedly connected to one side of the fixture body 1, a V-groove bent plate 10 is fixedly installed on the side of the fixture body 2 4 away from the fixture body 1, an angle positioning pin 7 is provided in the V-groove at the top of the V-groove bent plate 10, one end of the angle positioning pin 7 has a boss block, the boss block is adapted to the through groove of the small end head of the eccentric shaft 6, the boss block at one end of the angle positioning pin 7 has a width smaller than the through groove width of the small end head of the eccentric shaft 6, and its width is 0.1mm, thereby ensuring that when the product is installed, it can be tightened by rotating in one direction, ensuring dimensional consistency, and V The top of the groove bent plate 10 is fixedly connected with the eccentric shaft pressure plate 8 and the angle positioning pin pressure plate 13. The eccentric shaft pressure plate 8 and the angle positioning pin pressure plate 13 are both inverted U-shaped, and the top thread of the angle positioning pin pressure plate 13 is penetrated by the angle positioning pin tightening screw 14. One end of the angle positioning pin tightening screw 14 is arranged on the inner side of the angle positioning pin pressure plate 13 and abuts against the outer wall of the angle positioning pin 7. The inner wall of the eccentric shaft pressure plate 8 is connected with a cross piece 17. The top thread of the eccentric shaft pressure plate 8 is penetrated by the eccentric shaft tightening screw 12. One end of the eccentric shaft tightening screw 12 is arranged on the inner side of the eccentric shaft pressure plate 8 and abuts against the surface of the cross piece 17. The cross piece 17 presses the eccentric shaft 6 through the action of the eccentric shaft tightening screw 12.

[0030] Furthermore, after the eccentric shaft pressure plate 8 is actually installed on the V-groove bent plate 10, it is necessary to ensure that after the eccentric shaft 6 is installed in the V-groove at the top of the V-groove bent plate 10, the gap between the eccentric shaft 6 and the middle cross piece 17 of the eccentric shaft pressure plate 8 is 0.1-0.3mm. In this way, this design not only ensures the smoothness of the installation of the eccentric shaft 6, but also ensures that the deformation of the cross piece 17 is not large. It should be noted that this size reservation can be controlled by technical personnel in this field when processing the eccentric shaft pressure plate 8. There is no need for too many technical requirements and it can be operated by technical personnel in this field. When this scheme is actually implemented, the gap between the eccentric shaft 6 and the middle cross piece 17 of the eccentric shaft pressure plate 8 is 0.1-0.3mm.

[0031] Combine Figure 3 and Figure 4 As shown, as a further feature, a spacing area is provided between one end of the transverse piece 17 and the inner side wall of the eccentric shaft pressure plate 8, and the width of the spacing area is 1 mm.

[0032] Specifically, the eccentric shaft pressure plate 8 is cut out in one go, and the middle transverse piece 17 is 3 mm thick, and a spacing area is left based on the side cutting, so that the 1 mm wide spacing area can enable the transverse piece 17 to have sufficient deformation when being tightened by the eccentric shaft tightening screw 12.

[0033] Combine Figure 2As shown, as a further feature, a tapered shaft is provided on one side of the fixture body 1 away from the fixture body 2 4. The fixture body 1 is assembled with the main shaft hole of the grinder through the tapered shaft, and a pull rod 16 is connected to the inner thread of the tapered shaft. The fixture body 1 passes through the main shaft end hole of the grinder through the pull rod 16 to achieve the tightening of the fixture body 1.

[0034] Specifically, a screw hole is provided at the center of the tapered shaft, and one end of the pull rod 16 is threadedly connected to the screw hole; it should be emphasized that: this fixture body 1 can be directly installed in the main shaft hole of the grinder through the tapered shaft, but in order to prevent loosening, the pull rod 16 is passed through the end hole of the grinder main shaft and tightened in the center screw hole of the tapered shaft of the fixture body 1, so that the pull rod 16 tightens the fixture body 1 from the back to ensure the stability of the fixture.

[0035] Combine Figure 1 and Figure 2 As shown, as a further example, fastening screw through holes 9 are respectively provided on the surfaces of the eccentric shaft pressure plate 8, the V-groove bent plate 10 and the angle positioning pin pressure plate 13, and fastening screw through holes 9 are respectively provided in the fastening screw through holes 9, and a plurality of fastening screw screw holes 15 are respectively provided on both sides of the V-groove at the top of the V-groove bent plate 10, and the plurality of fastening screw screw holes 15 respectively correspond to the fastening screw through holes 9 on the eccentric shaft pressure plate 8 and the angle positioning pin pressure plate 13, and there are two fastening screw through holes 9 on the eccentric shaft pressure plate 8, and the two fastening screw through holes 9 are symmetrically arranged with the eccentric shaft clamping screw 12 as the axis of symmetry, and the eccentric shaft pressure plate 8 is detachably connected to the V-groove bent plate 10 by the fastening screw 11, and there are two fastening screw through holes 9 on the angle positioning pin pressure plate 13, and the two fastening screw through holes 9 are symmetrically arranged with the angle positioning pin clamping screw 14 as the axis of symmetry, and the angle positioning pin pressure plate 13 is detachably connected to the V-groove bent plate 10 by the fastening screw 11.

[0036] Specifically, through the design of the fastening screw through hole 9, the fastening screw 11 and the fastening screw screw hole 15, the fastening screw 11 on the eccentric shaft pressure plate 8 can be threadedly connected to the corresponding fastening screw screw hole 15 after passing through the fastening screw through hole 9, thereby realizing the fixed connection between the eccentric shaft pressure plate 8 and the V-groove bent plate 10. Similarly, the fastening screw 11 on the angle positioning pin pressure plate 13 can be threadedly connected to the corresponding fastening screw screw hole 15 after passing through the fastening screw through hole 9, thereby realizing the fixed connection between the angle positioning pin pressure plate 13 and the V-groove bent plate 10, thereby ensuring the stability of the fixture after assembly, and the structure is simple and the operation is convenient.

[0037] Combine Figure 2As shown, as a further feature, a plurality of connecting screw holes 5 are provided through the surface of the clamp body 2 4, and two of the connecting screw holes 5 correspond to the fastening screw holes 9 on the V-groove bent plate 10. The V-groove bent plate 10 is detachably connected to the clamp body 2 4 by the fastening screws 11. A plurality of reverse hanging screw holes 3 are provided through the surface of the clamp body 1, and reverse hanging screws 2 are respectively provided in the plurality of reverse hanging screw holes 3. The clamp body 1 is fixedly connected to the clamp body 2 4 by the reverse hanging screws 2 passing through the connecting screw holes 5.

[0038] Specifically, there are five connecting screw holes 5 and three reverse hanging screw through holes 3, and the three reverse hanging screw through holes 3 correspond one-to-one to three connecting screw holes 5 among the five connecting screw holes 5, and through the design of the reverse hanging screw 2, the fixed connection between the clamp body 1 and the clamp body 2 4 is realized; and two connecting screw holes 5 among the five connecting screw holes 5 can correspond one-to-one to the fastening screw through holes 9 on the V-groove bent plate 10, thereby allowing the fastening screws 11 to pass through the fastening screw through holes 9 and be connected to the connecting screw holes 5, so that the V-groove bent plate 10 can be fixedly installed on the clamp body 2 4, thereby ensuring the assembly stability of the clamp.

[0039] Furthermore, when debugging the first piece, if the parallelism deviation between the outer diameter of the eccentric end and the outer diameter of the small end of the product is found, the three anti-hanging screws 2 can be unscrewed, and plugs can be added at appropriate positions between the clamp body 2 4 and the clamp body 1 to adjust the parallelism, and then the anti-hanging screws 2 can be tightened. It should be noted that this situation occurs very rarely, and the operation is simple and is performed according to the actual situation. There are no excessive technical requirements and it is well known to those skilled in the art. Compared with this article, it will not be elaborated on.

[0040] Combine Figure 2 As shown, as a further feature, a clamping screw hole 18 is respectively provided on the eccentric shaft pressure plate 8 and the angle positioning pin pressure plate 13, and the eccentric shaft clamping screw 12 and the angle positioning pin clamping screw 14 are respectively arranged in the corresponding clamping screw holes 18. Specifically, this design facilitates the angle positioning pin clamping screw 14 to be screwed down to clamp the angle positioning pin 7 after movement, and also facilitates the eccentric shaft clamping screw 12 to be screwed down to clamp the eccentric shaft 6 after movement, and is convenient to operate and securely clamped, which effectively improves the quality of the eccentric shaft 6 after processing and can also improve processing efficiency to a certain extent.

[0041] The working principle and use process of this utility model:

[0042] Before use, assemble the fixture. First, install the fixture body 1 directly into the main shaft hole of the grinder through the tapered shaft, and then pass the pull rod 16 through the main shaft end hole of the grinder, and tighten it on the tapered shaft of the fixture body 1 to tighten the fixture from the back, effectively preventing the loosening of the fixture body 1, and then use the reverse hanging screw 2 to pass through the reverse hanging screw hole 3 and connect it to the connecting screw hole 5, so that the fixture body 2 4 is fixed on the fixture body 1, and then the V-groove bent plate 10 is installed on the fixture body through the fastening screw 11 4, and place the angle locating pin 7 in the V-groove at the top of the V-groove bent plate 10, then fix the angle locating pin pressing plate 13 on the V-groove bent plate 10 by fastening screws 11, and use the installation of the angle locating pin clamping screw 14 to move downward and press the angle locating pin 7, so that the boss block is in a vertical direction after the angle locating pin 7 is pressed, and finally the eccentric shaft pressing plate 8 is fixed on the V-groove bent plate 10 by fastening screws 11 to complete the assembly of the fixture and ensure the stability of the fixture after assembly.

[0043] When in use, for installing the eccentric shaft 6, first adjust the through groove at the small end of the eccentric shaft 6 to be in the vertical direction, then push the eccentric shaft 6 inward along the V-groove on the V-groove bent plate 10, and rotate it slightly after the small end of the eccentric shaft 6 hits the angle positioning pin 7, so that the boss block on the angle positioning pin 7 is stuck in the through groove and limits the rotation of the eccentric shaft 6, so that the eccentric shaft 6 is installed in place, and then tighten the eccentric shaft clamping screw 12, so that the eccentric shaft clamping screw 12 moves downward and presses the cross piece 17, so that the cross piece 17 presses the eccentric shaft 6 to complete the clamping of the eccentric shaft 6. The operation is simple and quick, and the clamping is stable, which effectively improves the quality and efficiency of the eccentric shaft 6 grinding.

[0044] It should be noted that when debugging the first piece, if it is found that the eccentric angle of the product is incorrect, the eccentric shaft 6 can be rotated after loosening the angle positioning pin tightening screw 14, so that the eccentric shaft 6 drives the angle positioning pin 7 to change a certain angle, ensuring that the eccentric angle of the eccentric shaft 6 product is in place, and then tighten the angle positioning pin tightening screw 14 to tighten the angle positioning pin 7 to complete the adjustment of the fixture, effectively saving machine adjustment time and improving processing efficiency.

[0045] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A special fixture for grinding fixed-angle eccentrics, characterized in that: The invention comprises a fixture body (1) for assembling with a main shaft hole of a grinding machine, wherein one side of the fixture body (1) is fixedly connected to a fixture body (4), and a side of the fixture body (4) away from the fixture body (1) is fixedly installed with a V-groove bent plate (10), an angle positioning pin (7) is provided in the V-groove at the top of the V-groove bent plate (10), one end of the angle positioning pin (7) has a boss block, and the boss block is adapted to be in the through groove of the small end head of the eccentric shaft (6), and the top of the V-groove bent plate (10) is fixedly connected to an eccentric shaft pressure plate (8) and an angle positioning pin pressure plate (13), and the eccentric shaft pressure plate (8) and the angle positioning pin pressure plate (13) are both The angle positioning pin pressure plate (13) is in an inverted U shape, and the top thread of the angle positioning pin pressure plate (13) is penetrated by an angle positioning pin tightening screw (14), one end of the angle positioning pin tightening screw (14) is arranged on the inner side of the angle positioning pin pressure plate (13) and abuts against the outer wall of the angle positioning pin (7), and the inner side wall of the eccentric shaft pressure plate (8) is connected with a transverse piece (17), the top thread of the eccentric shaft pressure plate (8) is penetrated by an eccentric shaft tightening screw (12), one end of the eccentric shaft tightening screw (12) is arranged on the inner side of the eccentric shaft pressure plate (8) and abuts against the surface of the transverse piece (17), and the transverse piece (17) presses the eccentric shaft (6) through the action of the eccentric shaft tightening screw (12).

2. A special fixture for grinding fixed-angle eccentrics according to claim 1, characterized in that: A spacing area is provided between one end of the transverse piece (17) and the inner side wall of the eccentric shaft pressure plate (8), and the width of the spacing area is 1 mm.

3. A special fixture for grinding fixed-angle eccentrics according to claim 1, characterized in that: A tapered shaft is provided on one side of the clamp body 1 (1) away from the clamp body 2 (4), and the clamp body 1 (1) is assembled with the main shaft hole of the grinder through the tapered shaft, and a pull rod (16) is connected to the inner thread of the tapered shaft, and the clamp body 1 (1) is tightened by passing the pull rod (16) through the main shaft end hole of the grinder.

4. A special fixture for grinding fixed-angle eccentrics according to claim 1, characterized in that: The surfaces of the eccentric shaft pressure plate (8), the V-groove bent plate (10) and the angle positioning pin pressure plate (13) are respectively provided with fastening screw through holes (9), and fastening screws (11) are respectively provided in the fastening screw through holes (9).

5. A special fixture for grinding fixed-angle eccentrics according to claim 4, characterized in that: A plurality of fastening screw holes (15) are respectively provided on both sides of the V-groove at the top of the V-groove bent plate (10), and the plurality of fastening screw holes (15) respectively correspond to the fastening screw through holes (9) on the eccentric shaft pressure plate (8) and the angle positioning pin pressure plate (13).

6. A special fixture for grinding fixed-angle eccentrics according to claim 4, characterized in that: There are two fastening screw through holes (9) on the eccentric shaft pressure plate (8), and the two fastening screw through holes (9) are symmetrically arranged with the eccentric shaft pressing screw (12) as a symmetry axis, and the eccentric shaft pressure plate (8) is detachably connected to the V-groove bent plate (10) through the fastening screw (11).

7. A special fixture for grinding fixed-angle eccentrics according to claim 4, characterized in that: There are two fastening screw through holes (9) on the angle positioning pin pressure plate (13), and the two fastening screw through holes (9) are symmetrically arranged with the angle positioning pin pressing screw (14) as a symmetry axis, and the angle positioning pin pressure plate (13) is detachably connected to the V-groove bent plate (10) through the fastening screws (11).

8. A special fixture for grinding fixed-angle eccentrics according to claim 4, characterized in that: A plurality of connecting screw holes (5) are provided through the surface of the second clamp body (4), and two of the connecting screw holes (5) correspond to the fastening screw through holes (9) on the V-groove bent plate (10). The V-groove bent plate (10) is detachably connected to the second clamp body (4) via the fastening screws (11).

9. A special fixture for grinding fixed-angle eccentrics according to claim 8, characterized in that: The surface of the clamp body 1 (1) is provided with a plurality of reverse hanging screw through holes (3), and the plurality of reverse hanging screw through holes (3) are respectively provided with reverse hanging screws (2). The clamp body 1 (1) is fixedly connected to the clamp body 2 (4) by the reverse hanging screws (2) passing through the connecting screw holes (5).

10. A special fixture for grinding fixed-angle eccentrics according to claim 1, characterized in that: The eccentric shaft pressure plate (8) and the angle positioning pin pressure plate (13) are respectively provided with a clamping screw hole (18), and the eccentric shaft clamping screw (12) and the angle positioning pin clamping screw (14) are respectively arranged in the corresponding clamping screw hole (18).

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