Multi-point pressing clamp for machining steering gear shell

Abstract

The utility model provides a multi-point pressing clamp for machining a steering engine shell, and belongs to the technical field of pressing clamps. Comprising a bottom plate and a clamping assembly. The clamping assembly comprises an inner cavity formed in the bottom plate, the inner wall of the inner cavity is rotationally connected with a bidirectional threaded rod, the outer wall of the bidirectional threaded rod is in threaded connection with a connecting rod, and a clamping block is fixedly assembled at the bottom of the connecting rod. The worm is rotated through the rocker, the worm gear is driven to rotate through rotation of the worm, the two-way threaded rod is driven to rotate through rotation of the worm gear, and therefore the two connecting rods and the clamping blocks are driven to move oppositely till the two clamping blocks are clamped on the connecting base, and finally fixing of the device is completed. And the device can be disassembled by repeating the steps, so that the disassembly and assembly convenience of the device is improved, the working difficulty is reduced, and the working efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressing clamps, in particular to a multi-point pressing clamp for processing a steering gear housing. Background Art

[0002] In machine tool processing, various special-shaped parts need to be processed. In order to improve the accuracy of processing, the special-shaped parts need to be clamped and fixed to ensure that they can maintain stability during the processing.

[0003] Before the existing special-shaped part clamps are clamped and fixed, they need to be fixed on the CNC machine tool. The traditional fixing method is to use multiple fixing bolts to thread the various positioning holes of the clamp. Although this method can firmly position the clamp, it is necessary to use special tools to operate the fixing bolts during the disassembly and assembly process, which reduces the disassembly and assembly efficiency. In order to address the above problems and defects, there is an urgent need for a multi-point clamping clamp for steering gear housing processing. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a multi-point clamping fixture for steering gear housing processing to solve the problem that the existing special-shaped part clamp needs to be fixed on a CNC machine tool before clamping and fixing the special-shaped part. The traditional fixing method is to use multiple fixing bolts to thread the various positioning holes of the clamp. Although this method can firmly position the clamp, it is necessary to use special tools to operate the fixing bolts during the disassembly and assembly process, thereby reducing the limitation of disassembly and assembly efficiency.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A multi-point clamping fixture for processing a steering gear housing comprises: a base plate and a clamping assembly; the clamping assembly comprises an inner cavity opened inside the base plate, the inner wall of the inner cavity is rotatably connected to a bidirectional threaded rod, the outer wall of the bidirectional threaded rod is threadedly connected to a connecting rod, the bottom of the connecting rod is fixedly assembled with a clamping block, the number of the connecting rods and clamping blocks is two, and the two connecting rods and clamping blocks are symmetrically distributed on both sides of the bidirectional threaded rod, a through hole is opened at the bottom of the base plate, the connecting rod passes through the through hole; the end of the bidirectional threaded rod is fixedly assembled with a worm gear, the inner wall of the base plate is rotatably connected to a worm, and the worm gear is meshed with the worm gear.

[0007] Preferably, the top of the base plate is fixedly equipped with a coarse positioning rod, which is "U"-shaped. The top of the base plate is fixedly equipped with a clamping mechanism, which consists of a cylinder and a pressure block. The top of the base plate is fixedly equipped with a pre-compression caliper.

[0008] Preferably, the outer wall of the clamping block is provided with a groove, and the inner wall of the groove is fixedly equipped with a rubber pad.

[0009] Preferably, a folded cloth is fixedly mounted on the inner wall of the through hole, and a side of the folded cloth away from the through hole is fixedly connected to the connecting rod.

[0010] Preferably, a sliding groove is provided on the top of the inner cavity, and the end of the connecting rod away from the clamping block is slidably connected to the sliding groove.

[0011] Preferably, a square groove is provided on the top of the worm, and a rocker is clamped on the inner wall of the square groove.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] 1. In the above scheme, the worm is rotated by the rocker, and the rotation of the worm drives the worm wheel to rotate, and the rotation of the worm wheel drives the bidirectional threaded rod to rotate, thereby driving the two connecting rods and the clamping block to move in opposite directions until the two clamping blocks are clamped on the connecting seat, and finally the device is fixed. Repeating the above steps can remove it, which is conducive to improving the convenience of disassembly and assembly of the device, reducing the difficulty of work, and improving its work efficiency.

[0014] 2. In the above scheme, by setting the coarse positioning rod, the clamping mechanism and the pre-stressing caliper, it is beneficial to place the special-shaped part on the coarse positioning rod first, then clamp the special-shaped part through the clamping mechanism, and finally fix the special-shaped part with the pre-stressing caliper, which is beneficial to improve the firmness of the fixation of the special-shaped part. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the multi-point clamping fixture used for steering gear housing processing;

[0017] Figure 2 A schematic diagram of the first-person perspective cross-sectional structure of a multi-point pressing fixture for machining a steering gear housing;

[0018] Figure 3 A schematic diagram of the sectional three-dimensional structure of a multi-point pressing fixture for processing a steering gear housing from a second viewing angle;

[0019] Figure 4 for Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure.

[0020] Reference numerals

[0021] 1. Base plate; 101. Coarse positioning rod; 102. Clamping mechanism; 103. Preload caliper;

[0022] 2. Clamping assembly; 201. Inner cavity; 202. Bidirectional threaded rod; 203. Connecting rod; 204. Clamping block; 205. Through hole; 206. Worm gear; 207. Worm; 208. Groove; 209. Rubber pad; 210. Folding cloth; 211. Slide groove; 212. Square groove; 213. Rocker.

[0023] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0024] The following describes in detail a multi-point clamping fixture for machining steering gear housings provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are presented as best and preferred embodiments. Those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to further illustrate the embodiments and are not intended to limit the present invention.

[0025] like Figure 1 、 Figure 2 and Figure 3 As shown, the embodiment of the present invention provides a multi-point clamping fixture for processing a steering gear housing, comprising: a base plate 1 and a clamping assembly 2; the clamping assembly 2 comprises an inner cavity 201 opened inside the base plate 1, the inner wall of the inner cavity 201 is rotatably connected to a bidirectional threaded rod 202, the outer wall of the bidirectional threaded rod 202 is threadedly connected to a connecting rod 203, the bottom of the connecting rod 203 is fixedly assembled with a clamping block 204, the number of the connecting rod 203 and the clamping block 204 is two, and the two connecting rods 203 and the clamping blocks 204 are symmetrically distributed on the bidirectional threaded rod 202. On both sides, a through hole 205 is provided at the bottom of the base plate 1, and the connecting rod 203 passes through the through hole 205; the end of the bidirectional threaded rod 202 is fixedly equipped with a worm gear 206, and the inner wall of the base plate 1 is rotatably connected to the worm 207, and the worm 207 is engaged with the worm gear 206. A slide groove 211 is provided at the top of the inner cavity 201, and the end of the connecting rod 203 away from the clamping block 204 is slidably connected to the slide groove 211. By setting the slide groove 211, it is beneficial to limit the movement of the connecting rod 203 when the connecting rod 203 moves, thereby improving its stability during movement.

[0026] like Figure 1and Figure 3 As shown, the top of the base plate 1 is fixedly equipped with a coarse positioning rod 101, and the coarse positioning rod 101 is "U"-shaped. The top of the base plate 1 is fixedly equipped with a clamping mechanism 102, and the clamping mechanism 102 is composed of a cylinder and a pressure block. The top of the base plate 1 is fixedly equipped with a pre-stressing caliper 103. By arranging the coarse positioning rod 101, the clamping mechanism 102 and the pre-stressing caliper 103, it is beneficial to place the special-shaped part on the coarse positioning rod 101 first, and then clamp the special-shaped part through the clamping mechanism 102, and finally fix the special-shaped part with the pre-stressing caliper 103, which is beneficial to improve the firmness of the fixation of the special-shaped part.

[0027] like Figure 2 and Figure 3 As shown, a groove 208 is provided on the outer wall of the clamping block 204, and a rubber pad 209 is fixedly assembled on the inner wall of the groove 208. The provision of the groove 208 and the rubber pad 209 is conducive to increasing the friction between the clamping block 204 and the contact surface, thereby improving the stability of the device when it is fixed.

[0028] like Figure 2 and Figure 3 As shown, the inner wall of the through hole 205 is fixedly equipped with a folded cloth 210, and the side of the folded cloth 210 away from the through hole 205 is fixedly connected to the connecting rod 203. By providing the folded cloth 210, it is beneficial to improve the airtightness of the through hole 205 and prevent processing debris from entering the inner cavity 201 from the through hole 205, thereby affecting the normal operation of the clamping assembly 2.

[0029] like Figure 2 and Figure 4 A square groove 212 is provided at the top of the worm 207, and a rocker 213 is clamped on the inner wall of the square groove 212. By setting the square groove 212 and the rocker 213, it is convenient to clamp the rocker 213 and the worm 207 when disassembling and assembling the device, so as to facilitate the rotation of the worm 207. When the installation operation is completed, the rocker 213 can be directly removed to prevent the rocker 213 from affecting the processing operation of the CNC machine tool.

[0030] The technical solution provided by the present invention is that when working, the worm 207 is rotated by the rocker 213, and the rotation of the worm 207 drives the worm wheel 206 to rotate, and the rotation of the worm wheel 206 drives the bidirectional threaded rod 202 to rotate, thereby driving the two connecting rods 203 and the clamping block 204 to move in opposite directions until the two clamping blocks 204 are clamped on the connecting seat, and finally the device is fixed. Repeat the above steps to remove it;

[0031] When clamping a special-shaped part, the special-shaped part can be placed on the coarse positioning rod 101 first, then the special-shaped part is pressed by the pressing mechanism 102, and finally the special-shaped part is fixed with the pre-pressing caliper 103, which is conducive to improving the firmness of the fixation of the special-shaped part;

[0032] By providing the square groove 212 and the rocker 213, it is convenient to engage the rocker 213 with the worm 207 when disassembling and assembling the device, thereby facilitating the rotation of the worm 207. When the installation operation is completed, the rocker 213 can be directly removed to prevent the rocker 213 from affecting the processing operation of the CNC machine tool.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A multi-point pressing fixture for processing a steering gear housing, characterized in that: include: Base plate (1) and clamping assembly (2); The clamping assembly (2) includes an inner cavity (201) provided inside the base plate (1), the inner wall of the inner cavity (201) is rotatably connected to a bidirectional threaded rod (202), the outer wall of the bidirectional threaded rod (202) is threadedly connected to a connecting rod (203), the bottom of the connecting rod (203) is fixedly assembled with a clamping block (204), the number of the connecting rods (203) and the clamping block (204) is two, and the two connecting rods (203) and the clamping blocks (204) are symmetrically distributed on both sides of the bidirectional threaded rod (202), the bottom of the base plate (1) is provided with a through hole (205), and the connecting rod (203) passes through the through hole (205); A worm gear (206) is fixedly mounted on the end of the bidirectional threaded rod (202), and a worm (207) is rotatably connected to the inner wall of the base plate (1), wherein the worm (207) is meshed with the worm gear (206).

2. The multi-point pressing fixture for machining a steering gear housing according to claim 1, characterized in that: The top of the base plate (1) is fixedly equipped with a coarse positioning rod (101), and the coarse positioning rod (101) is "U"-shaped. The top of the base plate (1) is fixedly equipped with a clamping mechanism (102), and the clamping mechanism (102) is composed of a cylinder and a clamping block. The top of the base plate (1) is fixedly equipped with a pre-compression caliper (103).

3. The multi-point pressing fixture for machining a steering gear housing according to claim 1, characterized in that: The outer wall of the clamping block (204) is provided with a groove (208), and the inner wall of the groove (208) is fixedly equipped with a rubber pad (209).

4. The multi-point pressing fixture for machining a steering gear housing according to claim 1, characterized in that: The inner wall of the through hole (205) is fixedly equipped with a folded cloth (210), and the side of the folded cloth (210) away from the through hole (205) is fixedly connected to the connecting rod (203).

5. The multi-point pressing fixture for machining a steering gear housing according to claim 1, characterized in that: A sliding groove (211) is provided at the top of the inner cavity (201), and one end of the connecting rod (203) away from the clamping block (204) is slidably connected to the sliding groove (211).

6. The multi-point pressing fixture for machining a steering gear housing according to claim 1, characterized in that: A square groove (212) is provided on the top of the worm (207), and a rocker (213) is clamped on the inner wall of the square groove (212).

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