CN117817056B - Clamp for gear machining - Google Patents

Abstract

The invention discloses a clamp for gear machining, which belongs to the technical field of clamps and has the technical key points that: comprises a steering unit which is rotationally connected with the side surface of the clamp body and is connected with a base; the outer positioning unit is connected to the surface of the base in a sliding manner; the driving unit is rotationally connected to the base; and the internal positioning unit is connected to the base in a sliding manner. The outer surface and the inner hole of the machined gear can be respectively positioned through the outer positioning unit and the inner positioning unit, and a good positioning effect can be achieved on the gear. In the process of finely grinding the machined gear, one group of positioning units can be loosened through the matching of the inner positioning units and the outer positioning units, so that fine grinding of the places where the two groups of positioning units contact the machined gear is not prevented. The steering unit can be used for processing the processing gear at multiple angles, and the processing gear can be repositioned and clamped without disassembly after finishing fine grinding of one side end surface after clamping and positioning.

Description

A fixture for gear processing

Technical Field

The present invention relates to the technical field of fixtures, and in particular to a fixture for gear processing.

Background Art

Gears are mechanical elements with teeth on the wheel rim that can continuously mesh to transmit motion and power. They are mechanical parts with teeth that can mesh with each other. Gears and gear products are important basic parts of mechanical equipment. The main transmission components of most mechanical complete sets of equipment are gear transmissions. They are widely used in mechanical transmission and the entire mechanical field.

At present, it is impossible to position the inner hole and outer surface of the gear at the same time when positioning the gear during machining. When fine grinding the contact point between the gear and the fixture and the end face of the other side of the gear, the gear needs to be disassembled, re-positioned, clamped and then ground, resulting in low machining efficiency. Repeated positioning may lead to inaccurate positioning. Therefore, it is necessary to provide a gear machining fixture to solve the above problems.

Summary of the invention

In view of the deficiencies in the prior art, an object of an embodiment of the present invention is to provide a fixture for gear machining to solve the problems in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A fixture for gear processing, comprising:

A clamp body, on which a base is rotatably connected;

A steering unit is rotatably connected to the side of the fixture body and connected to the base, and is used to drive the base to turn, thereby turning the processing gear on the base;

A limiting unit, connected to the steering unit, for positioning the steering unit;

An external positioning unit, slidably connected to the surface of the base, is used to position the outer surface of the processed gear;

A driving unit is rotatably connected to the base and connected to the external positioning unit, and is used to drive the external positioning unit to slide on the surface of the base;

The inner positioning unit is slidably connected to the base and is used to position the inner hole of the processing gear. The inner positioning unit is connected to an adjustment unit, and the adjustment unit is used to adjust the position of the inner positioning unit on the base.

Compared with the prior art, the embodiments of the present invention have the following beneficial effects: by placing the processing gear on the base, the driving unit can drive the external positioning unit to clamp the outer surface of the processing gear; the adjusting unit can drive the internal positioning unit to position the inner hole of the processing gear, so that the outer surface and the inner hole of the processing gear can be positioned respectively, which can achieve a good positioning effect on the gear. During the fine grinding of the tooth grooves of the processing gear, one group of positioning units can be loosened through the cooperation of the internal positioning unit and the external positioning unit, so as not to hinder the fine grinding of the two groups of positioning units contacting the processing gear, which helps to improve the efficiency and quality of grinding. The steering unit can not only process the processing gear at multiple angles, but also the processing gear can be repositioned and clamped without disassembly after the clamping and positioning are completed to complete the fine grinding of one side end face. The phenomenon of inaccurate positioning caused by repeated positioning is avoided, thereby improving the processing efficiency and quality of the processing gear.

In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the overall structure of a gear processing fixture provided in an embodiment of the present invention.

FIG. 2 is a schematic diagram of the structure of an external positioning unit provided in an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a steering unit provided in an embodiment of the present invention.

FIG. 4 is a schematic diagram of the structure of an inner positioning unit provided in an embodiment of the present invention.

FIG. 5 is a schematic diagram of the structure of an adjustment unit provided in an embodiment of the present invention.

2-rotating plate, 24-rotating plate, 25-rotating wheel, 26-rotating frame, 27-rotating column, 28-circular ring frame, 281-slideway, 3-limiting unit, 31-arc frame, 32-arc groove, 4-external positioning unit, 41-bracket, 42-positioning rod, 43-rotating plate, 44-spiral groove, 45-sliding column, 5-driving unit, 51-fixed frame, 52-driving motor, 53-worm, 54-worm wheel, 6-internal positioning unit, 61-connecting frame, 62-support frame, 63-fixed cylinder, 64-positioning frame, 641-through hole, 65-elastic ring, 7-adjusting unit, 71-bevel groove, 72-adjusting rod, 73-conical member.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

Referring to FIGS. 1 to 5 , a gear processing fixture includes:

A clamp body 1, to which a base 11 is rotatably connected;

The steering unit 2 is rotatably connected to the side of the fixture body 1 and connected to the base 11, and is used to drive the base 11 to turn, thereby turning the processing gear 10 on the base 11;

The limiting unit 3 is connected to the steering unit 2 and is used to position the steering unit 2;

The outer positioning unit 4 is slidably connected to the surface of the base 11 and is used to position the outer surface of the processing gear 10;

The driving unit 5 is rotatably connected to the base 11 and connected to the external positioning unit 4, and is used to drive the external positioning unit 4 to slide on the surface of the base 11;

The inner positioning unit 6 is slidably connected to the base 11 and is used to position the inner hole of the processing gear 10 . The inner positioning unit 6 is connected to an adjustment unit 7 , and the adjustment unit 7 is used to adjust the position of the inner positioning unit 6 on the base 11 .

In the embodiment of the present invention, by placing the processing gear 10 on the base 11, the driving unit 5 can drive the external positioning unit 4 to clamp the outer surface of the processing gear 10; the adjusting unit 7 can drive the internal positioning unit 6 to position the inner hole of the processing gear 10, so that the outer surface and the inner hole of the processing gear 10 can be positioned respectively, which can achieve a good positioning effect on the gear. In the process of fine grinding of the tooth groove of the processing gear 10, through the cooperation of the internal positioning unit 6 and the external positioning unit 4, one group of positioning units can be loosened, so that the fine grinding of the two groups of positioning units contacting the processing gear 10 will not be hindered, which helps to improve the efficiency and quality of grinding. Through the steering unit 2, not only can the processing gear 10 be processed at multiple angles, but also after the processing gear 10 is clamped and positioned to complete the fine grinding of one side end face, it can be repositioned and clamped without disassembly. The phenomenon that repeated positioning may cause inaccurate positioning is avoided, thereby improving the processing efficiency and quality of the processing gear 10.

In one embodiment of the present invention, as shown in FIG. 2 and FIG. 3 , the steering unit 2 includes:

A steering rod 21 is rotatably connected to the clamp body 1, and its surface is connected to the base 11;

The turntable 22 is fixed to the end of the steering rod 21 and is connected to a circular ring frame 28 on the side;

The device frame 23 is connected to the side of the clamp body 1 and has a driving member 24 mounted on the surface;

The rotating wheel 25 is rotatably connected to the side of the device frame 23, and the side is connected to the output end of the driving member 24, and a rotating frame 26 is fixed on the surface of the rotating wheel 25;

A chute 281 is provided on the circular frame 28;

The rotating column 27 is fixed to the end of the rotating frame 26 , and its surface is slidably connected to the slide groove 281 .

In this embodiment, the steering rod 21 is rotatably connected to the clamp body 1, and its surface is connected to the base 11; the turntable 22 is fixed to the end of the steering rod 21, and a circular frame 28 is connected to the side; the device frame 23 is connected to the side of the clamp body 1, and a driving member 24 is installed on the surface; the rotating wheel 25 is rotatably connected to the side of the device frame 23, and the side is connected to the output end of the driving member 24, and a rotating frame 26 is fixed to the surface of the rotating wheel 25; the slide groove 281 is opened on the circular frame 28; the rotating column 27 is fixed to the end of the rotating frame 26, and its surface is slidably connected to the slide groove 281.

When processing the processing gear 10, the processing gear 10 is first placed on the base 11. The outer surface and the inner hole of the processing gear 10 can be positioned respectively through the external positioning unit 4 and the internal positioning unit 6, which can have a good positioning effect on the gear and improve the processing accuracy.

When it is necessary to adjust the processing angle of the processing gear 10, the driving member 24 is turned on, and the output end of the driving member 24 can drive the rotating wheel 25 to rotate on the surface of the device frame 23. When the rotating wheel 25 rotates, it can drive the rotating column 27 to rotate synchronously through the rotating frame 26. When the rotating column 27 slides into the slide groove 281 on the surface of the circular frame 28, the circular frame 28 can drive the steering rod 21 to rotate on the clamp body 1 through the turntable 22 under the action of the slide groove 281 and the rotating column 27. When the steering rod 21 rotates, it can drive the base 11 on its surface to turn, so that the base 11 can drive the processing gear 10 to turn through the external positioning unit 4 and the internal positioning unit 6, which is convenient for multi-angle processing of the processing gear 10, thereby improving the processing quality.

The driving member 24 can be a servo motor or a pneumatic motor, so as to drive the rotating wheel 25 to rotate stably on the side of the device frame 23.

In one embodiment of the present invention, as shown in FIG3 , the limiting unit 3 includes:

The arc frame 31 is fixed on the surface of the rotating wheel 25;

The arc groove 32 is formed on the annular frame 28 and is slidably connected to the surface of the arc frame 31 .

In this embodiment, the arc frame 31 is fixed on the surface of the rotating wheel 25 ; the arc groove 32 is opened on the circular ring frame 28 and is slidably connected to the surface of the arc frame 31 .

When the rotating wheel 25 rotates, it can drive the arc frame 31 on its surface to rotate synchronously. When the rotating frame 26 drives the rotating column 27 to slide out of the sliding groove 281, the steering rod 21, the rotating disk 22 and the circular ring frame 28 can stop steering, and the rotating wheel 25 can drive the arc frame 31 to rotate into the circular arc groove 32, so that the arc frame 31 rotates in the circular arc groove 32. When the steering rod 21 drives the base 11 to rotate to a suitable direction, the driving member 24 can be closed, so that the circular arc groove 32 can position the circular ring frame 28 under the action of the arc frame 31, and then the circular ring frame 28 can position the steering rod 21 through the rotating disk 22, so that the steering rod 21 can position the turned processing gear 10 through the base 11, thereby improving the stability of the processing gear 10 after steering, avoiding the sliding and offset of the processing gear 10, and improving the processing accuracy.

An arc-shaped rubber ring may also be installed on the outer surface of the arc-shaped frame 31 in the limiting unit 3, and the friction coefficient between the arc-shaped frame 31 and the arc groove 32 may be increased by the arc-shaped rubber ring, thereby further improving the stability of the base 11 after turning.

In one embodiment of the present invention, as shown in FIG. 2 and FIG. 4 , the external positioning unit 4 includes:

The bracket 41 is fixed on the surface of the base 11 and is slidably connected with a positioning rod 42 inside;

The rotating disk 43 is rotatably connected to the surface of the base 11 and has a spiral groove 44 formed therein;

The sliding column 45 is fixed on the surface of the positioning rod 42 , and the end portion is slidably connected to the spiral groove 44 .

In this embodiment, the bracket 41 is fixed on the surface of the base 11 and is slidably connected to a positioning rod 42 inside; the rotating disk 43 is rotatably connected to the surface of the base 11 and is provided with a spiral groove 44 inside; the sliding column 45 is fixed on the surface of the positioning rod 42 and its end is slidably connected to the spiral groove 44.

When positioning the processing gear 10, the processing gear 10 is placed on the base 11, and the driving unit 5 is turned on. The driving unit 5 can drive the rotating disk 43 to rotate on the surface of the base 11. When the rotating disk 43 rotates, it can drive the spiral groove 44 on its surface to rotate synchronously. Since the spiral groove 44 and the end of the sliding column 45 are slidably connected, the sliding column 45 can drive the positioning rod 42 to slide inward on the bracket 41 under the action of the spiral groove 44 until the end of the positioning rod 42 slides to contact the tooth groove on the surface of the processing gear 10, so that the processing gear 10 can be positioned under the action of the ends of the four groups of positioning rods 42. The processing gear 10 can be automatically clamped by the external positioning unit 4, ensuring the precision of the fine grinding of the processing gear 10.

A positioning column can also be installed on the lower side of the rotating disk 43, and a positioning circular groove is provided on the surface of the base 11. The positioning column is slidably connected in the positioning circular groove, so that the positioning circular groove can guide and limit the rotating disk 43 through the positioning column, thereby improving the stability of the rotating disk 43 when rotating on the surface of the base 11. The positioning rods 42 in the external positioning unit 4 are preferably four groups, and rubber pads can also be installed at the ends of the positioning rods 42, which can protect the surface tooth grooves of the processing gear 10, thereby improving the processing quality of the processing gear 10.

In one embodiment of the present invention, as shown in FIG4 , the driving unit 5 comprises:

A fixing frame 51 is connected to the surface of the base 11, and a driving motor 52 is installed on the side thereof;

The worm 53 is rotatably connected in the fixed frame 51, and the end portion is connected to the output end of the driving motor 52;

The worm wheel 54 is mounted on the surface of the rotating disk 43 and is meshedly connected with the worm 53 .

In this embodiment, the fixed frame 51 is connected to the surface of the base 11, and a driving motor 52 is installed on the side; the worm 53 is rotatably connected in the fixed frame 51, and the end is connected to the output end of the driving motor 52; the worm wheel 54 is installed on the surface of the rotating disk 43, and is meshingly connected with the worm 53.

When positioning the outer surface of the processing gear 10, turn on the driving motor 52, and the output end of the driving motor 52 can drive the worm 53 to rotate in the fixed frame 51. When the worm 53 rotates, it can drive the rotating disk 43 to rotate on the surface of the base 11 through the connection with the worm wheel 54. The rotating disk 43 can drive the spiral groove 44 on its surface to rotate synchronously. The sliding column 45 can drive the positioning rod 42 to slide inward on the bracket 41 under the action of the spiral groove 44 until the end of the positioning rod 42 slides to contact the tooth groove on the surface of the processing gear 10, so that the processing gear 10 can be positioned under the action of the ends of the four groups of positioning rods 42, thereby ensuring the accuracy of the fine grinding of the processing gear 10.

The driving motor 52 in the driving unit 5 can also be replaced by a handle to drive the worm 53 to rotate stably on the fixing frame 51. In addition, since the worm 53 can only drive the worm wheel 54 to rotate in one direction, and the worm wheel 54 cannot drive the worm 53, the stability of the worm wheel 54 after rotation is improved, and the stability of the positioning rod 42 clamping the processing gear 10 is further improved, and the precision of the fine grinding of the processing gear 10 is guaranteed.

In one embodiment of the present invention, as shown in FIG. 4 and FIG. 5 , the inner positioning unit 6 includes:

A connecting frame 61 is fixed to the surface of the base 11, and a supporting frame 62 is connected to the end thereof;

The fixing cylinder 63 is fixed to the side of the supporting frame 62 and is slidably connected to the positioning frame 64;

A through hole 641 is formed on the positioning frame 64 , and an elastic ring 65 passes through the through hole 641 .

In this embodiment, the connecting frame 61 is fixed on the surface of the base 11, and the end is connected to the supporting frame 62; the fixing tube 63 is fixed on the side of the supporting frame 62, and the positioning frame 64 is slidably connected inside; the through hole 641 is opened on the positioning frame 64, and an elastic ring 65 passes through the through hole 641.

Before positioning the outer surface of the processing gear 10, as long as the inner hole of the processing gear 10 passes through the surface of the fixed tube 63 and the adjusting unit 7 is turned on, the adjusting unit 7 can drive the positioning frame 64 to slide outward in the fixed tube 63 through the connection with the positioning frame 64. When sliding, the positioning frame 64 can drive the through hole 641 to slide synchronously, so that the multiple groups of through holes 641 can stretch the elastic ring 65 until the outer end of the positioning frame 64 can slide to contact the inner hole of the processing gear 10, so that the inner hole of the processing gear 10 can be limited and fixed under the action of the ends of the multiple groups of positioning frames 64.

In addition, the inner positioning unit 6 and the outer positioning unit 4 can adjust the positioning range according to the size of the processing gear 10, so as to achieve a good positioning effect on the processing gear 10. When the inner hole of the processing gear 10 is limited, the outer surface of the gear can also be positioned to avoid the sliding and offset of the processing gear 10, thereby improving the processing accuracy of the processing gear 10. By setting the inner positioning unit 6, the four sets of positioning rods 42 can be loosened during the fine grinding of the tooth groove of the processing gear 10, which is simple and convenient to operate, so as not to hinder the fine grinding of the processing gear 10 and the four sets of positioning rods 42 where the tooth groove is in contact, which helps to improve the efficiency and quality of grinding.

An air bag or an elastic rubber ring may also be installed at the outer end of the positioning frame 64 in the inner positioning unit 6, through which the inner hole of the processing gear 10 can be squeezed, thereby preventing the processing gear 10 from slipping and further improving the positioning stability of the processing gear 10.

In one embodiment of the present invention, as shown in FIG. 4 and FIG. 5 , the adjustment unit 7 includes:

An inclined groove 71 is provided at the end of the positioning frame 64;

The adjusting rod 72 is connected to the supporting frame 62 by means of threads, and a conical member 73 is installed at the end thereof, and the surface of the conical member 73 is slidably connected to the surface of the inclined groove 71 .

In this embodiment, the inclined groove 71 is opened at the end of the positioning frame 64; the adjusting rod 72 is connected to the support frame 62 by threads, and a cone member 73 is installed at the end, and the surface of the cone member 73 is slidably connected to the surface of the inclined groove 71.

Rotate the adjusting rod 72, the adjusting rod 72 can slide on the supporting frame 62, and the adjusting rod 72 can drive the cone part 73 at its end to slide synchronously when rotating. When the surface of the cone part 73 slides to contact the inclined groove 71, the inclined groove 71 can push the positioning frame 64 to slide outward in the fixed cylinder 63 under the extrusion of the cone part 73. When sliding, the positioning frame 64 can drive the through hole 641 to slide synchronously, so that the multiple groups of through holes 641 can stretch the elastic ring 65 until the outer end of the positioning frame 64 can slide to contact the inner hole of the processing gear 10, so that the inner hole of the processing gear 10 can be limited and fixed under the action of the ends of the multiple groups of positioning frames 64.

When the fine grinding of the processing gear 10 is completed, the adjusting rod 72 is loosened to make the cone 73 slide in the opposite direction, so that the through hole 641 can drive the positioning frame 64 to slide inward in the fixed cylinder 63 under the elastic force of the elastic ring 65, so that the end of the positioning frame 64 slides to be separated from the inner hole of the processing gear 10. The elastic ring 65 can be a spring ring or an elastic rubber ring, which is not limited here. The inclined groove 71 and the adjusting rod 72 in the adjusting unit 7 can also be replaced by an electric telescopic rod to facilitate the cone 73 to be raised and lowered.

The base 11 is also provided with a processing circular hole inside, and the diameter of the processing circular hole is smaller than the arc diameter of the bracket 41, and larger than the diameter of the processing gear 10. The processing gear 10 can be processed from both sides of the base 11 through the processing circular hole. Specifically, when the steering unit 2 drives the base 11 to turn 180 degrees, the processing gear 10 can be processed from the other side of the base 11 through the processing circular hole. Not only can the processing gear 10 be processed at multiple angles through the steering unit 2, but also the processing gear 10 can be repositioned and clamped without disassembly after being clamped and positioned and the fine grinding of one side end face is completed. The phenomenon of inaccurate positioning caused by repeated positioning is avoided, thereby improving the processing efficiency and quality of the processing gear 10.

The working principle of the present invention is: when positioning the processing gear 10, by placing the processing gear 10 on the base 11 and turning on the driving unit 5, the driving unit 5 can drive the rotating disk 43 to rotate on the surface of the base 11, and the rotating disk 43 can drive the spiral groove 44 to rotate synchronously. The sliding column 45 can drive the positioning rod 42 to slide inward on the bracket 41 under the action of the spiral groove 44 until the end of the positioning rod 42 slides into contact with the tooth groove on the surface of the processing gear 10, so that the processing gear 10 can be positioned under the action of the ends of the four groups of positioning rods 42.

Before positioning the outer surface of the processing gear 10, as long as the inner hole of the processing gear 10 passes through the surface of the fixed cylinder 63 and the adjustment unit 7 is turned on, the adjustment unit 7 can drive the positioning frame 64 to slide outward in the fixed cylinder 63 until the outer end of the positioning frame 64 can slide to contact the inner hole of the processing gear 10, so that the inner hole of the processing gear 10 can be limited and fixed under the action of the ends of the multiple groups of positioning frames 64. By setting the inner positioning unit 6, the four groups of positioning rods 42 can be loosened during the fine grinding of the tooth groove of the processing gear 10, which is simple and convenient to operate, so that the fine grinding of the place where the processing gear 10 and the four groups of positioning rods 42 contact the tooth groove will not be hindered, which helps to improve the efficiency and quality of grinding.

When the processing angle of the processing gear 10 needs to be adjusted, the driving member 24 is turned on, and the output end of the driving member 24 can drive the rotating wheel 25 to rotate on the surface of the device frame 23. When the rotating wheel 25 rotates, it can drive the rotating column 27 to rotate through the rotating frame 26. When the rotating column 27 slides into the slide groove 281 on the surface of the circular frame 28, the circular frame 28 can drive the steering rod 21 to rotate on the clamp body 1 through the turntable 22 under the action of the slide groove 281 and the rotating column 27. When the steering rod 21 rotates, it can drive the processing gear 10 to turn through the base 11. Through the steering unit 2, not only can the processing gear 10 be processed at multiple angles, but also the processing gear 10 can be repositioned and clamped without disassembly after the clamping and positioning are completed and the fine grinding of one side end face is completed. The phenomenon of inaccurate positioning caused by repeated positioning is avoided, thereby improving the processing efficiency and quality of the processing gear 10.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. A clamp for gear machining is characterized in that, the gear processing jig includes:

the clamp body is rotationally connected with a base;

The turning unit, rotate the side of connecting at the anchor clamps organism, with pedestal connection for drive the base and turn to the processing gear on the base turns to, the turning unit includes: the steering rod is rotationally connected to the clamp body, and the surface of the steering rod is connected with the base; the rotary disk is fixed at the end part of the steering rod, the side surface is connected with a ring frame; the device frame is connected to the side surface of the clamp body, and a driving piece is arranged on the surface of the device frame; the rotating wheel is rotationally connected to the side surface of the device frame, the side surface is connected to the output end of the driving piece, and the rotating frame is fixed on the surface of the rotating wheel; the sliding groove is formed in the ring frame; a rotating column fixed at the end of the rotating frame, the surface is connected with the chute in a sliding way;

The limiting unit is connected to the steering unit and used for positioning the steering unit, and the limiting unit comprises: the arc-shaped frame is fixed on the surface of the rotating wheel; the circular arc groove is arranged on the circular ring frame and is connected with the surface of the circular arc frame in a sliding way;

The outer positioning unit, sliding connection is at the surface of base for fix a position the surface of processing gear, outer positioning unit includes: the bracket is fixed on the surface of the base, and the inside of the bracket is connected with a positioning rod in a sliding way; the rotating disk is rotationally connected to the surface of the base, and a spiral groove is formed in the rotating disk; the sliding column is fixed on the surface of the positioning rod, and the end part of the sliding column is in sliding connection with the spiral groove; the inside of the base is also provided with a processing round hole, the diameter of the processing round hole is smaller than the arc-shaped diameter of the bracket and larger than the diameter of the processing gear, and the processing gear can be processed from two sides of the base through the processing round hole;

The driving unit is rotationally connected to the base and connected with the outer positioning unit and is used for driving the outer positioning unit to slide on the surface of the base;

The locating unit is connected to the base in a sliding manner and is used for locating an inner hole of the processing gear, the locating unit is connected with an adjusting unit, and the adjusting unit is used for adjusting the position of the locating unit on the base, wherein the locating unit comprises: the connecting frame is fixed on the surface of the base, and the end part of the connecting frame is connected with the supporting frame; the fixed cylinder is fixed on the side surface of the supporting frame, the inside is connected with a positioning frame in a sliding way; the through hole is formed in the positioning frame, and an elastic ring penetrates through the through hole.

2. The jig for gear processing according to claim 1, wherein the driving unit comprises:

the fixing frame is connected to the surface of the base, and a driving motor is arranged on the side face of the fixing frame;

The worm is rotationally connected in the fixing frame, and the end part of the worm is connected to the output end of the driving motor;

The worm wheel is arranged on the surface of the rotating disc and is in meshed connection with the worm.

3. The jig for gear processing according to claim 2, wherein the adjusting unit comprises:

A chute arranged at the end part of the positioning frame;

the adjusting rod is connected to the supporting frame through threads, a conical piece is installed at the end part of the adjusting rod, and the surface of the conical piece is connected with the surface of the chute in a sliding mode.