CN103286597A - Fixture - Google Patents

Abstract

The invention relates to a special clamp capable of stably clamping an engine intake pipe. It consists of a pressure plate, a pressure cylinder, a clamp body, a positioning pin, and a support plate. It can stably clamp the engine intake pipe to facilitate the processing of the inclined surface, the pressure cylinder provides the pressing force, the work efficiency is high, the structure is simple, the clamping operation is convenient, the fixture has a long service life, and the stability of the workpiece is high. Effective fixed clamping of special-shaped workpieces.

Description

a fixture

technical field

The invention relates to a mechanical processing equipment, in particular to a special clamp capable of stably clamping an engine intake pipe.

Background technique

Currently known clamps are composed of a positioning element, a clamping device, an indexing device, a connecting element and a clamping body, etc., and rely on the pressure of the clamping device to fix the clamped object. However, the traditional fixture structure is single and mainly aimed at items with relatively regular geometric shapes. The clamping force is applied manually, so it is difficult to achieve reliable fixation with ordinary fixtures, which will cause the engine intake pipe to fall off and be damaged during processing.

Contents of the invention

In order to overcome the deficiency that the existing clamps cannot effectively fix the engine intake pipe and require manual clamping, the present invention provides a clamp that can effectively fix the engine intake pipe and facilitate the processing of the inclined surface.

The technical solution adopted by the present invention to solve the technical problem is: a fixture, which is composed of a positioning element, a clamping device, a tool setting guide element, an indexing device, a connecting element and a clamping body, etc. The pressure of the device fixes the clamped object, and at least one pressure cylinder provides the clamping force of the clamp. There is a guide groove at the rear of the pressing plate, and a U-shaped hole is opened at the front, and the width of the guide groove is 0.1-0.5mm larger than the diameter of the push rod, and the width of the U-shaped hole is 0.1-0.5mm larger than the diameter of the support rod. The positioning pin cooperates to form the positioning device in this fixture, and the pressure plate support rod and spring together with the pressure cylinder form the automatic clamping device in this fixture to exert pressure on the workpiece so that it can be completely positioned to facilitate the processing of the inclined surface.

The beneficial effect of the present invention is that the engine intake pipe can be stably clamped to facilitate the processing of inclined surfaces, and inclined surfaces with different inclination angles can be processed according to requirements, and the pressing force provided by the pressure cylinder has high working efficiency, simple structure and convenient clamping operation. Long service life and high workpiece stability. Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the front view of the present invention

Figure 2 is a partial view of A in Figure 1

Fig. 3 is the front top view of the pressing plate of the present invention

Fig. 4 is the front view of positioning pin of the present invention

Fig. 5 is two kinds of supporting plates A of the present invention, the top view of B

In the figure 10 Press plate 11 Lead groove 12 U-shaped hole 13 Support rod 14 Spring 15 Work piece 21 Push rod 30 Clamp body 31 Panel 40 Locating pin 50 Support plate 51 Through hole 52 Countersunk hole

Detailed ways

As shown in Fig. 1 and Fig. 2, the present invention is made up of pressing plate 10, pressure cylinder 20, clamp body 30, positioning pin 40, support plate 50, wherein two pressure cylinders 20 are arranged symmetrically between the two ribs of clamp body 30, and the pressure The cylinder can be a pressure device such as an air cylinder or a hydraulic cylinder. There is a push rod 21 at the front of the pressure cylinder 20, which can automatically control its extension and retraction. The end of the push rod 21 acts on the guide groove 11 at the rear of the pressure plate 10. The width of the lead groove is 0.1-0.5mm larger than the diameter of the push rod. There is a U-shaped hole 12 at the front end of 10. The support rod 13 passes through the U-shaped hole 12 and is screwed on the panel 31 together with the spring 14 to partially fix the pressure plate. The spring 14 can ensure that the pressure plate 10 is always in contact with the top of the support rod 13. The width of the U-shaped hole 12 is 0.1-0.5mm larger than the diameter of the support rod 13, the guide groove 11 and the U-shaped hole 12 jointly ensure the straight-line push of the pressure plate 10, the pressure cylinder 20, the pressure plate 10, the support rod 13 and the spring 14 together constitute the clamping device of the fixture, and the support plate 50 passes through The threaded connection is fixed on the panel 31, and the support plate 50 is divided into two types: A type and B type, the A type support plate is processed with a through hole 51 and a pair of countersunk holes 52, and the B type support plate is only processed with a pair of countersink holes , The B-type support plate is symmetrically installed on the panel 31 at a distance of 40mm from the central axis, and the A-type support plate is fixed on the outside to facilitate connecting and fixing the workpiece 15. The A-type support plate is used together with the positioning pin 40. The positioning pin 40 is the connecting device of the fixture. The chamfering of the protruding end of the positioning pin 40 is 30 degrees and goes deep into the chamfering of the panel end of 60 degrees. When in use, the external control pressure cylinder 20 drives the push rod 21 shrinks, the pressure plate 10 is in a non-working state, and an external force can be applied to make the pressure plate 10 slide along the U-shaped hole 12 of the guide groove 11 to the end of the guide groove 11. At this time, the clamp is in an open state, and the through hole on the bottom surface of the workpiece 15 is fixed on the corresponding On the positioning pin 40, the support plates 51, 52, 53, and 54 jointly hold the workpiece 15 to limit its movement to the lower right. At this time, the external force can push the pressure plate 10 to move in the opposite direction, and the pressure cylinder 20 acts to make the push rod 21 stretch out. Apply pressure to act on the guide groove 11, further compress the workpiece 15, and realize complete positioning under the action of the supporting plate 50 of the pressing plate 10, the positioning pin 40 and the clamping body 30.

Embodiment 2: On the premise of ensuring that Embodiment 1 remains unchanged, the angle between the panel 31 and the bottom plate of the clamp body 30 can be made at any angle from 0 to 90 degrees according to processing requirements.

Claims (5)

1. A fixture, which is composed of a positioning element, a clamping device, an indexing device and a clamp body, and its characteristics are: the positioning element is composed of a clamp body (30), a panel (31), and a positioning pin (40), and the clamp The tightening device is composed of a pressure plate (10), a support rod (13), a spring (14), and a pressure cylinder (20). The pressure plate (10) is connected to the clamp body (30) through a support screw (13) and a spring (14). On the panel (10) of the clamp body (30), a pair of pressure cylinders (20) are placed under the panel (31) symmetrically distributed front and back, and the push rod (21) passes through the hole of the panel (31) and acts on the guide groove (11). There is a guide groove (11) at the rear of the pressure plate (10) and a U-shaped hole (12) at the front. The width of the guide groove (11) is 0.1-0.5mm larger than the diameter of the cylinder push rod (21), U-shaped Hole (12) width is slightly greater than support bar (13) diameter, is shaped on through hole (51), countersunk hole (52) positioning pin (40) protruding end chamfering 30 degree deep panel (31) on support plate (50) ) with an end chamfer of 60 degrees, which can fix and hold special-shaped workpieces (15) such as engine intake pipes. 2. The clamp according to claim 1, characterized in that the clamping force of the clamp is provided by at least one pressure cylinder (40). 3. The fixture according to claim 1, characterized in that: there is a guide groove (11) at the rear of the pressing plate (10), and a U-shaped hole (12) is opened at the front, and the width of the guide groove (11) is larger than that of the push plate The diameter of the rod (21) is 0.1-0.5mm, and the width of the U-shaped hole (12) is greater than the diameter of the support rod (13) by 0.1-0.5mm. 4. The clamp according to claim 1, characterized in that: the pressure plate (10), the support rod (13), and the spring (14) together with the pressure cylinder (20) form the automatic clamping device in the clamp. 5. The clamp according to claim 1, characterized in that: the support plate (50) is formed with a through hole (51) which cooperates with the positioning pin (40) to form a positioning device in the clamp.

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