Drawing type clamping mechanism

Abstract

A drawing type clamping mechanism comprises a base, a supporting plate, a pressing screw, a front stop pin, a drawing pressing plate, a pressing plate seat, a cover plate, a rear stop pin, a handle and a cylindrical pin. The bearing plate and the pressing plate seat are installed on the base, a workpiece is placed on the bearing plate, the drawing pressing plate is installed in a rectangular guide groove formed between the pressing plate seat and the cover plate, the pressing screw and the front stop pin are installed at the front end of the drawing pressing plate, and the rear stop pin and the handle installed through the cylindrical pin are installed at the rear end of the drawing pressing plate. A rectangular guide groove is formed in the upper end of the pressing plate base, and the pressing plate base and the drawing pressing plate are installed in a matched mode and then provided with a cover plate. The drawing pressing plate can axially move in a rectangular guide groove formed between the pressing plate seat and the cover plate, and the front-back position of the drawing pressing plate is limited by the front stop pin and the rear stop pin. A workpiece can be clamped by pushing the pressing plate and tightening the screw, the workpiece can be assembled and disassembled by loosening the screw and pulling back the pressing plate, the positioning requirement of a common workpiece can be met, and the positioning requirement of a workpiece inner cavity closed occasion can be met.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing and relates to a clamping mechanism, in particular to a pull-out type clamping mechanism. Background Art

[0002] As we all know, when machining the datum surface of shell-type metal parts in the blank process on the machine tool, the side squeezing method is usually used to clamp the workpiece. However, this clamping method often causes the workpiece to separate from the fixture support surface and produce a gap while squeezing the workpiece. During processing, the existence of the gap will cause vibration and cause deviation in the processing size. At this time, it is necessary to adopt the method of clamping in the inner cavity of the shell-type parts to achieve the purpose of eliminating the gap and clamping the workpiece. However, conventional clamping mechanisms often cannot be set in the inner cavity of the workpiece. Even if they can be set in the inner cavity of the workpiece, due to its limited space, manual operation is very inconvenient, and it is difficult to achieve the purpose of clamping the workpiece, and it is impossible to load and remove the workpiece. In this case, a pull-out clamping method is usually used for clamping.

[0003] For example, the utility model patent "A pull-out clamping mechanism" authorized by the State Intellectual Property Office on April 9, 2021, application date: 2020.06.30, application number: 2020212635571, announcement number: CN 212919046 U. This utility model is relatively close to the content of this application. This pull-out clamping mechanism is provided with a support adjustment component, on which a displacement adjustment body and a displacement clamping body are suspended, and the displacement clamping body is tightly connected to the displacement adjustment body at one end; the displacement adjustment body drives the displacement clamping body to move in a plane; or the displacement adjustment body drives the other end of the displacement clamping body to move in an arc at the connection end. This mechanism is suitable for general workpiece processing occasions, but cannot be used in occasions where the inner cavity of the workpiece is closed.

[0004] Therefore, a pull-out clamping mechanism is provided which can meet the general workpiece positioning requirements and the positioning requirements of the workpiece inner cavity closed occasion, and is easy to operate, labor-saving, safe and reliable. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned clamping mechanism and provide a pull-out clamping mechanism with compact structure, convenient and labor-saving operation, high working efficiency, safety and reliability.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a pull-out type clamping mechanism, including: a base, a supporting plate, a clamping screw, a front stop pin, a pull-out pressure plate, a pressure plate seat, a cover plate, a rear stop pin, a handle, and a cylindrical pin; the supporting plate and the pressure plate seat are mounted on the base by screws, the workpiece is placed on the supporting plate, and a pull-out pressure plate is installed in the rectangular guide groove formed between the pressure plate seat and the cover plate, a clamping screw and a front stop pin are installed at the front end of the pull-out pressure plate, and a rear stop pin and a handle installed by a cylindrical pin are installed at the rear end of the pull-out pressure plate.

[0007] The upper end of the pressure plate seat is provided with a rectangular guide groove, and the cover plate is installed by screws after the pressure plate seat is matched with the draw-out pressure plate for installation.

[0008] The draw-out pressing plate can move axially in a rectangular guide groove formed between the pressing plate seat and the cover plate, and its front and rear positions of movement are limited by a front stop pin and a rear stop pin.

[0009] The utility model adopts the above technical scheme and has the following advantages: the utility model has a compact structure, is easy to operate and saves effort, and the workpiece can be clamped by only pushing the pressure plate and tightening the screws, and the workpiece can be loaded and unloaded by pulling back the pressure plate after loosening the screws. It can meet the general workpiece positioning requirements and is suitable for the positioning requirements in occasions where the workpiece inner cavity is closed, thereby improving the workpiece processing efficiency and reducing the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic cross-sectional structure diagram of a pull-out type clamping mechanism of the utility model;

[0011] Figure 2 It is a top view structural schematic diagram of a pull-out type clamping mechanism of the utility model;

[0012] Figure 3 It is a schematic diagram of the retracted position of a pull-out pressing plate of a pull-out type clamping mechanism of the utility model.

[0013] In the figure: 1. base, 2. support plate, 3. screw, 4. front stop pin, 5. pull-out pressure plate, 6. pressure plate seat, 7. cover plate, 8. rear stop pin, 9. handle, 10. cylindrical pin, 11. workpiece. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Figures 1 to 3As shown, a pull-out type clamping mechanism comprises: a base 1, a support plate 2, a clamping screw 3, a front stop pin 4, a pull-out pressure plate 5, a pressure plate seat 6, a cover plate 7, a rear stop pin 8, a handle 9, and a cylindrical pin 10; the support plate 2 and the pressure plate seat 6 are mounted on the base 1 by screws, and the workpiece 11 is placed on the support plate 2. A rectangular guide groove is arranged at the upper end of the pressure plate seat 6, the cover plate 7 is mounted on the pressure plate seat 6, the pull-out pressure plate 5 is mounted in the rectangular guide groove formed between the pressure plate seat 6 and the cover plate 7, the pull-out pressure plate 5 can move axially in the rectangular guide groove formed between the pressure plate seat 6 and the cover plate 7, and the front and rear positions of the pull-out pressure plate 5 are limited by the front stop pin 4 and the rear stop pin 8. The clamping screw 3 and the front stop pin 4 are mounted at the front of the pull-out pressure plate 5, the rear stop pin 8 is mounted at the rear of the pull-out pressure plate 5, and the rear end of the pull-out pressure plate 5 is provided with a handle 9 fixed by a cylindrical pin 10.

[0015] The working principle of the utility model is as follows: push the handle 9 installed at the rear end of the pull-out pressure plate 5 forward, and move forward along the rectangular guide groove formed between the pressure plate seat 6 and the cover plate 7, until the rear stop pin 8 contacts the rear side of the pressure plate seat 6 and stops moving. Tighten the clamping screw 3 installed at the front end of the pull-out pressure plate 5, so that the front end of the clamping screw 3 presses against the bottom surface of the inner cavity of the workpiece, so that the workpiece 11 is close to the support plate 2, thereby achieving the clamping of the workpiece 11. Conversely, loosen the clamping screw 3 installed at the front end of the pull-out pressure plate 5, so that the front end of the clamping screw 3 leaves the bottom surface of the inner cavity of the workpiece 11, pull the handle 9 installed at the rear end of the pull-out pressure plate 5 backward, and move backward along the rectangular guide groove formed between the pressure plate seat 6 and the cover plate 7, until the front stop pin 4 contacts the front side of the pressure plate seat 6 and stops moving, and then the workpiece 11 can be taken out.

[0016] The utility model has the advantages of compact structure, convenient and labor-saving operation, and the inner cavity of the workpiece can be clamped by pushing in the pressing plate, and the workpiece can be taken out by pulling back the pressing plate, thereby improving the workpiece processing efficiency and reducing the labor intensity of the operator.

[0017] Finally, it should be noted that the above is only a preferred embodiment of the utility model, and is not intended to limit the entire content of the utility model. Although the utility model is described in detail with reference to the above embodiments, for those skilled in the art, they can still make formal modifications to the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. All formal modifications, equivalent replacements, etc. made within the inspiration of the idea of ​​the utility model should be included in the scope of protection of the rights of the utility model.

Claims

1. A pull-out clamping mechanism, comprising: A base (1), a support plate (2), a clamping screw (3), a front stop pin (4), a pull-out pressure plate (5), a pressure plate seat (6), a cover plate (7), a rear stop pin (8), a handle (9), and a cylindrical pin (10); characterized in that: the support plate (2) and the pressure plate seat (6) are mounted on the base (1) by screws, the workpiece (11) is placed on the support plate (2), a pull-out pressure plate (5) is mounted in a rectangular guide groove formed between the pressure plate seat (6) and the cover plate (7), a clamping screw (3) and a front stop pin (4) are mounted at the front end of the pull-out pressure plate (5), and a rear stop pin (8) and a handle (9) mounted by a cylindrical pin (10) are mounted at the rear end of the pull-out pressure plate (5).

2. A pull-out clamping mechanism according to claim 1, characterized in that: A rectangular guide groove is provided at the upper end of the pressure plate seat (6), and the cover plate (7) is installed by screws after the pressure plate seat (6) and the draw-out pressure plate (5) are installed in coordination.

3. A pull-out clamping mechanism according to claim 1, characterized in that: The draw-out pressure plate (5) is capable of axial movement in a rectangular guide groove formed between the pressure plate seat (6) and the cover plate (7), and its front and rear movement positions are limited by the front stop pin (4) and the rear stop pin (8).

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