Machining clamp for connecting flange piece of exhaust pipe

Abstract

The utility model discloses a machining clamp for an exhaust pipe connecting flange piece, and belongs to the technical field of machining. A clamping assembly used for clamping and fixing a workpiece is installed on the fixing frame assembly. And a plurality of groups of clamping assemblies are arranged. By means of the mode, the lower end of a workpiece is placed on the dustproof top cover, then the oil cylinder is started, the output end of the oil cylinder drives the rear sealing cover to move, the rear sealing cover drives the middle pulling plate to move, the middle pulling plate drives the cable-stayed column to slide downwards in the sliding groove of the disc body, and the clamping jaws move towards the center of the disc body to clamp the workpiece. A workpiece is attached to the surface of the positioning face, the workpiece is pressed and clamped through the three clamping jaws, the clamping effect is good, and the workpiece can be kept stable in the machining process. After a workpiece is attached to the positioning face to be clamped and fixed, whether the workpiece is clamped in place or not can be judged by detecting the pressure difference in the gas detection hole. And workpieces with different sizes can be clamped by replacing the clamping jaws.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a processing fixture for exhaust pipe connecting flanges. Background Art

[0002] When processing the connecting flange of the automobile exhaust pipe, it needs to be clamped and fixed. However, the side pressure clamping of the general fixture is easy to warp the workpiece positioning, the clamping force is insufficient, and the workpiece is easy to move during processing, which affects the processing effect of the workpiece.

[0003] Chinese patent CN216576689U discloses a clamp commonly used for processing flange parts of air-conditioning compressors. By setting an electric telescopic rod, a limit ring, a limit column, a sleeve column, and a hydraulic telescopic column, the device can quickly clamp and fix the flange.

[0004] However, the above patent uses four electric telescopic rods and one hydraulic telescopic column to clamp and fix the workpiece, which is costly and cannot determine whether the workpiece is clamped in place.

[0005] Based on this, the utility model designs an exhaust pipe connecting flange processing fixture to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a processing fixture for exhaust pipe connection flange.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] Exhaust pipe connection flange processing fixture, including a fixing frame assembly;

[0009] The fixing frame assembly is provided with a clamping assembly for clamping and fixing the workpiece; the clamping assembly is provided with multiple groups;

[0010] The clamping assembly includes an oil cylinder, a disc body, a slide groove, an inclined pull column, a clamping claw, a rear cover and a middle pull plate; the oil cylinder is fixedly connected to the fixed frame assembly, the disc body is fixedly connected to the upper end of the fixed frame assembly, the output end of the oil cylinder is fixedly connected to the rear cover, the top of the rear cover is fixedly connected to the middle pull plate, the side of the middle pull plate is slidably connected to multiple groups of inclined pull columns, a plurality of slide grooves are opened on the disc body, the inclined pull columns are slidably connected with the slide grooves in the slide grooves, and the upper ends of the inclined pull columns are fixedly connected to clamping claws.

[0011] Furthermore, the fixed frame assembly includes a base plate, a vertical plate and a middle plate; the upper end of the base plate is fixedly connected to multiple groups of vertical plates, and the upper ends of the vertical plates are fixedly connected to the middle plate; the upper end of the base plate is fixedly connected to the oil cylinder, and the upper end of the middle plate is fixedly connected to the disc body.

[0012] Furthermore, a dustproof top cover is provided on the inner side of the clamping jaw, and the dustproof top cover is fixedly connected to the inner wall of the middle plate.

[0013] Furthermore, a groove is provided on the inner side of the inclined-stayed column, and the side edge of the middle pull plate is provided with a protrusion that is slidably connected with the groove of the inclined-stayed column.

[0014] Furthermore, the slide groove is configured as an inclined groove that inclines from top to bottom toward the center of the disk body.

[0015] Furthermore, the number of the slide slots, the inclined stays and the clamping claws in each set of the clamping assemblies is the same, that is, three are provided.

[0016] Furthermore, a groove is provided on the opposite side of the top of the clamping jaw to form a positioning surface for facilitating the positioning of the workpiece.

[0017] Furthermore, a gas detection hole is arranged on the positioning surface.

[0018] The utility model has the following technical effects:

[0019] 1. When the workpiece needs to be processed, the lower end of the workpiece is placed on the dustproof top cover, and then the cylinder is started. The output end of the cylinder drives the rear cover to move, and the rear cover drives the middle pull plate to move. The middle pull plate drives the inclined column to slide downward in the slide groove of the disc body, and the clamping claw moves toward the center of the disc body to clamp the workpiece so that the workpiece fits the surface of the positioning surface. The three clamping claws press down to clamp the workpiece, and the clamping effect is good, so that the workpiece can remain stable during the processing; after the workpiece is attached to the positioning surface and clamped, it can be judged whether it is clamped in place by detecting the pressure difference in the air inspection hole; workpieces of different sizes can also be clamped by replacing the clamping claws. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The utility model is a three-dimensional processing fixture for exhaust pipe connection flange Figure 1 ;

[0022] Figure 2 It is a front view of the exhaust pipe connection flange processing fixture of the utility model;

[0023] Figure 3 The structure of the clamping assembly in the exhaust pipe connection flange processing fixture of the utility model is schematically shown. Figure 1 ;

[0024] Figure 4 The structure of the clamping assembly in the exhaust pipe connection flange processing fixture of the utility model is schematically shown. Figure 2 .

[0025] The numbers in the figure represent:

[0026] 1. Fixed frame assembly; 11. Bottom plate; 12. Vertical plate; 13. Middle plate; 2. Clamping assembly; 21. Cylinder; 22. Plate; 23. Slide; 24. Inclined column; 25. Clamping claw; 26. Rear cover; 27. Middle pull plate; 3. Positioning surface; 4. Dustproof top cover; 5. Workpiece. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model is further described below in conjunction with embodiments.

[0029] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0030] Example 1

[0031] Please refer to the instruction manual Figure 1-4 , an exhaust pipe connection flange processing fixture, including a fixing frame assembly 1;

[0032] The fixing frame assembly 1 includes a bottom plate 11, a vertical plate 12 and a middle plate 13; the upper end of the bottom plate 11 is fixedly connected to a plurality of vertical plates 12, and the upper ends of the vertical plates 12 are fixedly connected to the middle plate 13; the bottom plate 11 and the middle plate 13 are both connected to the clamping assembly 2;

[0033] The fixing frame assembly 1 is provided with a clamping assembly 2 for clamping and fixing the workpiece 5; the clamping assembly 2 is provided with multiple groups;

[0034] The clamping assembly 2 includes an oil cylinder 21, a disc body 22, a slide groove 23, an inclined column 24, a clamping claw 25, a rear cover 26 and a middle pull plate 27; the oil cylinder 21 is fixedly connected to the upper end of the bottom plate 11, the disc body 22 is fixedly connected to the upper end of the middle plate 13, the output end of the oil cylinder 21 is fixedly connected to the rear cover 26, the top of the rear cover 26 is fixedly connected to the middle pull plate 27, the side of the middle pull plate 27 is slidably connected to multiple groups of inclined columns 24, a plurality of slide grooves 23 are provided on the disc body 22, the inclined columns 24 are limitedly slidably connected with the slide grooves 23 in the slide grooves 23, and the upper ends of the inclined columns 24 are fixedly connected to the clamping claws 25.

[0035] A dustproof cover 4 is provided on the inner side of the clamping jaw 25, and the dustproof cover 4 is fixedly connected to the inner wall of the middle plate 13;

[0036] A groove is provided on the inner side of the inclined column 24, and the side edge of the middle pull plate 27 is provided as a protrusion that is slidably connected with the groove of the inclined column 24;

[0037] The slide groove 23 is set as an inclined groove inclined from top to bottom toward the center of the plate body 22, so that the inclined column 24 can drive the clamping claw 25 to move and clamp the workpiece 5;

[0038] The number of the slide slots 23, the inclined stays 24 and the clamping claws 25 in each set of the clamping assembly 2 is the same, and three are provided;

[0039] A groove is formed on the opposite side of the top of the clamping jaw 25 to form a positioning surface 3 for facilitating the positioning of the workpiece 5;

[0040] An air inspection hole is provided on the positioning surface 3 to facilitate checking whether the workpiece 5 is in contact with the positioning surface 3, thereby determining whether the workpiece 5 is clamped in place;

[0041] When the workpiece 5 needs to be processed, the lower end of the workpiece 5 is placed on the dustproof top cover 4, and then the cylinder 21 is started, and the output end of the cylinder 21 drives the rear cover 26 to move, and the rear cover 26 drives the middle pull plate 27 to move, and the middle pull plate 27 drives the inclined column 24 to slide downward in the slide groove 23 of the disk body 22, and the clamping claw 25 moves toward the center of the disk body 22 to clamp the workpiece 5, so that the workpiece 5 is attached to the surface of the positioning surface 3, and the workpiece 5 is clamped by pressing down with three clamping claws 25, and the clamping effect is good, so that the workpiece 5 can remain stable during the processing, the clamping process is simple, the processing efficiency is high, and the depth size of the processing sealing groove is stable; after the workpiece 5 is attached to the positioning surface 3 and clamped and fixed, it can be judged whether it is clamped in place by detecting the pressure difference in the air inspection hole; and workpieces 5 of different sizes can be clamped by replacing the clamping claws 25.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A processing fixture for exhaust pipe connection flange, comprising a fixing frame assembly (1), characterized in that: The fixing frame assembly (1) is provided with a clamping assembly (2) for clamping and fixing a workpiece (5); the clamping assembly (2) is provided with a plurality of groups; The clamping assembly (2) comprises an oil cylinder (21), a disc body (22), a slide groove (23), an inclined column (24), a clamping claw (25), a rear cover (26) and a middle pull plate (27); the oil cylinder (21) is fixedly connected to the fixed frame assembly (1), the disc body (22) is fixedly connected to the upper end of the fixed frame assembly (1), the output end of the oil cylinder (21) is fixedly connected to the rear cover (26), the top of the rear cover (26) is fixedly connected to the middle pull plate (27), the side of the middle pull plate (27) is slidably connected to multiple groups of inclined columns (24), the disc body (22) is provided with multiple slide grooves (23), the inclined columns (24) are limitedly slidably connected to the slide grooves (23) in the slide grooves (23), and the upper ends of the inclined columns (24) are fixedly connected to the clamping claws (25).

2. The exhaust pipe connection flange processing fixture according to claim 1, characterized in that: The fixing frame assembly (1) comprises a bottom plate (11), a vertical plate (12) and a middle plate (13); the upper end of the bottom plate (11) is fixedly connected to a plurality of groups of vertical plates (12), and the upper ends of the vertical plates (12) are all fixedly connected to the middle plate (13); the upper end of the bottom plate (11) is fixedly connected to an oil cylinder (21), and the upper end of the middle plate (13) is fixedly connected to a disk body (22).

3. The exhaust pipe connection flange processing fixture according to claim 2, characterized in that: A dustproof top cover (4) is arranged on the inner side of the clamping claw (25), and the dustproof top cover (4) is fixedly connected to the inner wall of the middle plate (13).

4. The exhaust pipe connection flange processing fixture according to claim 3, characterized in that: A groove is provided on the inner side of the inclined column (24), and the side edge of the middle pull plate (27) is provided with a protrusion that is slidably connected with the groove of the inclined column (24).

5. The exhaust pipe connection flange processing fixture according to claim 4, characterized in that: The slide groove (23) is configured as an inclined groove which is inclined from top to bottom toward the center of the disk body (22).

6. The exhaust pipe connection flange processing fixture according to claim 5, characterized in that: The number of the slide grooves (23), the inclined stays (24) and the clamping claws (25) in each group of clamping assemblies (2) is the same, and three of them are provided.

7. The exhaust pipe connection flange processing fixture according to claim 6, characterized in that: A groove is provided on the opposite side of the top of the clamping jaw (25), forming a positioning surface (3) for facilitating the positioning of the workpiece (5).

8. The exhaust pipe connection flange processing fixture according to claim 7, characterized in that: An air detection hole is arranged on the positioning surface (3).

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