Gear shaft grinding clamp

Abstract

The utility model discloses a gear shaft grinding clamp which comprises a clamp body, an inner pressing assembly and an outer pressing assembly. The clamp body comprises a clamping block movably installed at the upper end of the clamp body. According to the gear shaft grinding clamp, when the clamping block at the upper end of the clamp body clamps the gear shaft, the outer wall of the gear shaft presses the middle pressing block in the center of the clamping block in the clamping process, and therefore the side pressing blocks on the two sides are externally pressed through the connecting rods by means of inward movement of the middle pressing block; the middle pressing block and the side pressing blocks on the two sides are all pressed on the outer wall of the gear shaft, so that the friction force of the gear shaft in the clamping process is increased through friction pads at the outer ends of the middle pressing block and the side pressing blocks, the clamping strength is enhanced, and the stability of the gear shaft in the grinding process is guaranteed; and the clamping blocks can be deformed and pressed on the outer wall of the gear shaft through the supporting pieces at the inner ends, so that the clamping friction force of the clamping blocks for clamping the middle upper part is increased, and the clamping stability is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, concretely is a gear shaft grinding fixture. BACKGROUND

[0002] The gear shaft grinding fixture is a clamping device in gear machining, which is mainly used for fixing and supporting the gear shaft, ensuring effective fixation of the gear shaft workpiece, preventing movement or vibration of the gear shaft workpiece in the grinding process due to external forces such as cutting force and gravity, and thus ensuring the accuracy and consistency of grinding.

[0003] The existing gear shaft fixture, such as the gear shaft fixture disclosed in publication No. CN218193857U, has the advantages of flexible adjustment of the machining station and convenient and convenient processing of the gear shaft, but the clamping area of the inner wall of the clamping block to the outer wall of the gear shaft is small, and it is inconvenient to increase the friction strength of the inner and outer ends of the clamping block, which results in insufficient clamping strength. Therefore, we propose a gear shaft grinding fixture. SUMMARY

[0004] The utility model aims at solving one of the technical problems existing in the prior art or related art.

[0005] Therefore, the utility model adopts the technical scheme:

[0006] A gear shaft grinding fixture, comprising: a fixture body, an inner pressing assembly, and an outer pressing assembly; the fixture body comprises a clamping block movably mounted on its upper end; the inner pressing assembly comprises an installation cavity opened in the clamping block, a middle restraining groove and a side restraining groove respectively opened on the inner side of the installation cavity, a middle pressing block and a side pressing block movably mounted in the middle restraining groove and the side restraining groove, a friction pad fixedly mounted on the outer end of the middle pressing block and the side pressing block, a connecting rod movably connected between the inner side of the installation cavity and the middle pressing block, and a fixed shaft movably mounted in the installation cavity at the central part of the connecting rod; the outer pressing assembly comprises notches opened on the upper end of the clamping block, rubber pads movably mounted in the notches, and support pieces fixedly installed on the inner side of the rubber pad.

[0007] Preferably, a fixed seat is further fixedly installed in the middle pressing block and the installation cavity.

[0008] Preferably, a spring is movably installed in the fixed seat.

[0009] Preferably, an extension column is further fixedly installed at the rear end of the middle pressing block, and the extension column is installed in the fixed seat.

[0010] Preferably, a positioning column is further fixedly installed in the fixed seat, and the positioning column is located at the central part of the spring.

[0011] Preferably, the support column is fixedly installed at the rear end of each support sheet, and the inner end of the support column is fixed to the clamping block.

[0012] By adopting the technical scheme, the utility model has the beneficial effects of:

[0013] 1. In the utility model, the middle pressing block in the center of the clamping block is pressed by the outer wall of the gear shaft during clamping, so that the middle pressing block is moved inward to press the side pressing blocks on both sides of the outer wall of the gear shaft through the connecting rod, so that the middle pressing block and the side pressing blocks on both sides are pressed tightly on the outer wall of the gear shaft, and the friction between the outer ends of the middle pressing block and the side pressing blocks is increased to increase the clamping strength and ensure the stability of the gear shaft during grinding.

[0014] 2. In the utility model, the rubber pad installed in the notch at the upper end of the clamping block can also be deformed and pressed tightly on the outer wall of the gear shaft through the support sheet at the inner end, so as to increase the clamping friction force of the upper part of the clamping block during clamping and enhance the stability of the clamping. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the utility model;

[0016] Figure 2 It is the structure diagram of the clamping block of the utility model;

[0017] Figure 3 It is the cross-sectional view of the clamping block of the utility model;

[0018] Figure 4 It is the utility model Figure 3 It is an enlarged view of A;

[0019] Figure 5 It is the cross-sectional view of the rubber pad of the utility model.

[0020] REFERENCE SIGNS:

[0021] 100, clamp body; 101, clamping block;

[0022] 200, inner pressing assembly; 201, installation cavity; 202, middle restraint groove; 203, side restraint groove; 204, middle pressing block; 205, side pressing block; 206, friction pad; 207, connecting rod; 208, fixed shaft; 209, fixed seat; 210, spring; 211, extension column; 212, positioning column;

[0023] 300, outer pressing assembly; 301, notch; 302, rubber pad; 303, support sheet; 304, support column. DETAILED DESCRIPTION

[0024] To make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with specific embodiments and referring to the drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0025] Some embodiments of the utility model provide a gear shaft grinding clamp, which is described below in combination with the drawings. Embodiment one

[0026] In combination with Figures 1-4 As shown in the utility model provides a kind of gear shaft grinding clamp, it include: fixture body 100, inner pressure assembly 200, outer pressure assembly 300;Fixture body 100 includes the clamping block 101 movably installed on its upper end;Inner pressure assembly 200 includes the installation cavity 201 being opened in clamping block 101, the middle restraint groove 202 and side restraint groove 203 being respectively penetrated and being opened in the inner side of installation cavity 201, the middle restraint groove 202 and side restraint groove 203 are movably installed in, the middle pressure block 204 and side pressure block 205, the friction pad 206 is fixedly installed in the outer end of middle pressure block 204 and side pressure block 205, the connecting rod 207 is movably connected between pressure block 205 and middle pressure block 204 in the inner side of installation cavity 201, the fixed shaft 208 fixed in installation cavity 201 is movably installed in the central part of connecting rod 207;Fixed seat 209 is also fixedly installed in the inner side of installation cavity 201 in middle pressure block 204, spring 210 is also movably installed in fixed seat 209, extension column 211 is also fixedly installed in the rear end of middle pressure block 204, and extension column 211 is installed in fixed seat 209, positioning column 212 is also fixedly installed in fixed seat 209, and positioning column 212 is at the central part of spring 210.

[0027] Specifically, the gear shaft grinding fixture is a clamping device in gear machining, which is mainly used for fixing and supporting the gear shaft; the clamping block 101 at the upper end of the fixture body 100 clamps the gear shaft, the outer wall of the gear shaft presses the middle pressing block 204 at the center of the clamping block 101, so that the side pressing blocks 205 on the outer sides of the rotary connecting rod 207 are pressed by the inner movement of the middle pressing block 204, so that the middle pressing block 204 and the side pressing blocks 205 on the two sides are pressed tightly to the outer wall of the gear shaft, so that the friction force in the clamping of the gear shaft is increased by the friction pads 206 at the outer ends of the middle pressing block 204 and the side pressing blocks 205, so as to enhance the clamping strength, and then ensure the stability in the gear shaft grinding machining, the fixed shaft 208 movably installed at the center of the connecting rod 207 is mainly used to ensure that the middle pressing block 204 moves back after pressing, the connecting rod 207 rotates around the fixed shaft 208 at the center, so that the side pressing blocks 205 are pressed and moved outward by the other end of the connecting rod 207, the spring 210 installed in the rear end fixed seat 209 of the middle pressing block 204 is mainly used for automatic return of the middle pressing block 204 without pressing, and the positioning column 212 fixedly installed at the center of the fixed seat 209 and the extension column 211 fixedly installed at the rear end of the middle pressing block 204 are mainly used for positioning the rear moving position of the middle pressing block 204 and ensuring the stability of the middle pressing block 204 in pressing. Example two

[0028] In combination Figure 2 And Figure 5 As shown in the embodiment one, the outer pressing assembly 300 includes the notches 301 opened at the upper end of the clamping block 101, the rubber pads 302 movably installed in the notches 301, and the support plates 303 fixedly installed in the rubber pads 302, the support columns 304 are also fixedly installed at the rear ends of the support plates 303, and the inner ends of the support columns 304 are fixed to the clamping block 101.

[0029] Specifically, the rubber pads 302 installed in the notches 301 at the upper end of the clamping block 101 can also be deformed and pressed tightly to the outer wall of the gear shaft through the support plates 303 and the support columns 304 at the inner ends, so as to increase the clamping friction force of the upper part of the clamping block 101 in clamping, so as to enhance the stability in clamping.

[0030] Working principle and use process of the utility model:

[0031] When the gear shaft is clamped, the gear shaft is first installed at the center of the clamp body 100, the clamp body 100 is started to synchronously move inwards the three groups of clamping blocks 101 at the upper end, when the clamping blocks 101 move inwards, the middle pressing blocks 204 at the center of the clamping blocks 101 will first contact the outer wall of the gear shaft, and after being extruded by the gear shaft, the middle pressing blocks 204 move backward, when the middle pressing blocks 204 move backward, the connecting rods 207 connected on both sides of the rear end of the middle pressing blocks 204 will rotate around the fixed shaft 208 at the center, so that the side pressing blocks 205 inside the side binding grooves 203 on both sides of the clamping blocks 101 are pressed, after the middle pressing blocks 204 move backward to the rear end and the extension column 211 contacts the positioning column 212, the positioning of the backward moving position of the middle pressing blocks 204 will be completed, at this time, the middle pressing blocks 204 and the side pressing blocks 205 at the center and on both sides of the inner end of the clamping blocks 101 are all pressed on the outer wall of the gear shaft, and through the friction pads 206 at the outer end, the friction between them and the gear shaft is enhanced, so that the clamping strength is enhanced, when the clamping blocks 101 clamp the gear shaft, the rubber pads 302 at the upper end will also be deformed and pressed on the outer wall of the gear shaft under the support of the inner end supporting piece 303 and the support column 304, so as to jointly enhance the clamping strength of the clamping blocks 101 at the inner and outer ends of the clamp body 100 on the gear shaft.

[0032] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A gear shaft grinding jig characterized by, Include: Clamp body (100), inner pressure assembly (200), outer pressure assembly (300); Clamp body (100) includes the clamp block (101) movably mounted on its upper end; The inner pressure assembly (200) includes the installation cavity (201) opened in the clamp block (101), the central and both sides of the installation cavity (201) are respectively provided with the middle binding groove (202) and the side binding groove (203), the middle binding groove (202) and the side binding groove (203) are movably installed with the middle pressure block (204) and the side pressure block (205), the outer end of the middle pressure block (204) and the side pressure block (205) is fixedly installed with the friction pad (206), the inner side of the installation cavity (201) is movably connected between the side pressure block (205) and the middle pressure block (204) with the connecting rod (207), the fixed shaft (208) is fixedly installed in the installation cavity (201) and movably installed in the connecting rod (207) central. The outer pressure assembly (300) includes the notches (301) opened in the upper end of the clamp block (101), the rubber pads (302) movably installed in the notches (301), and the support pieces (303) fixedly installed in the rubber pads (302).

2. A gear shaft grinding jig according to claim 1, wherein The middle pressure block (204) is further fixedly installed with a fixed seat (209) in the inner side of the installation cavity (201).

3. A gear shaft grinding jig according to claim 2, wherein The fixed seat (209) is further movably installed with a spring (210).

4. A gear shaft grinding jig according to claim 2, wherein The rear end of the middle pressure block (204) is further fixedly installed with an extension column (211), and the extension column (211) is installed in the fixed seat (209).

5. A gear shaft grinding jig according to claim 3, wherein The fixed seat (209) is further fixedly installed with a positioning column (212), and the positioning column (212) is at the central of the spring (210).

6. The gear shaft grinding jig according to claim 1, wherein The rear end of the support piece (303) is further fixedly installed with a support column (304), and the inner end of the support column (304) is fixedly installed on the clamp block (101).

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