CN106312642A - Air pressure detection type clamp - Google Patents

Abstract

The invention discloses an air pressure detection type clamp which comprises a base, wherein a support column is arranged on the base, a bottom plate is arranged on the support column, a jig is arranged on the bottom plate, clamping mechanisms for clamping workpieces are arranged on two sides of the bottom plate, an air passage is arranged in the jig, an air inlet of the air passage is positioned on the side wall of the jig, an air outlet of the air passage is positioned on the surface, attached to the workpieces, of the jig, the air inlet is connected to an air compressor through an air pipe, and the air pipe is. The air passage is arranged, the air outlet of the air passage is positioned on the surface, attached to a workpiece, of the jig, the workpiece is positioned on the jig during machining, the jig is attached to the workpiece, compressed air is introduced into the air passage, when impurities exist between the workpiece and the jig and the workpiece is not placed in place, the gap between the workpiece and the jig is too large, so that the air leakage amount is increased, the pressure in the air passage is abnormal, the abnormal phenomenon is fed back to machining equipment, the machining equipment stops machining, and waste products are prevented from being machined.

Description

An air pressure detection fixture

technical field

The invention belongs to the field of workpiece processing, in particular to an air pressure detection clamp.

Background technique

When the workpiece is processed, the workpiece needs to be clamped on the fixture for processing. The fixture is equipped with a jig for workpiece positioning. When the workpiece is fixed on the jig for processing, the fit between the workpiece and the jig must be ensured to ensure the dimensional stability of the workpiece after processing, especially the size of the local thickness of the workpiece.

However, in the existing production, there are often phenomena such as waste chips, sand particles and other impurities hidden between the workpiece and the fixture, and the workpiece is not placed in place, which will cause the bottom of the workpiece to be suspended, and the processing positioning will be deviated, resulting in post-processing. The size of the workpiece is not qualified, and there is a waste product. However, in the process of processing, which is generally completed by automated equipment, waste and sand particles hidden between the workpiece and the jig, and the phenomenon that the workpiece is not flat and tilted cannot be found, resulting in an increase in the scrap rate and increased manufacturing costs.

Contents of the invention

In order to overcome the deficiencies and existing problems of the prior art, the present invention provides an air pressure detection fixture, which can automatically detect abnormal clamping of workpieces and reduce the reject rate.

The present invention is achieved through the following technical solutions:

An air pressure detection fixture, comprising a base, the base is provided with a support column, the support column is provided with a base plate, the base plate is provided with a jig, and both sides of the base plate are provided with clamping mechanisms for clamping workpieces, the jig There is an air passage inside, the air inlet of the air passage is located on the side wall of the fixture, the air outlet of the air passage is located on the surface of the fixture that fits the workpiece, the air inlet is connected to the air compressor through the air pipe, and the air pipe is connected with Air pressure detection device.

There are multiple air outlets, all of which are located on the surface of the jig that fits the workpiece, and each air outlet communicates with the air passage.

There are multiple support columns, which are distributed around or on both sides of the bottom plate.

The clamping mechanism includes a fixed block fixed on the support column, the fixed block is provided with a clamping cylinder, the cylinder rod of the clamping cylinder is hinged with a clamping block, the clamping block is hinged with a connecting rod, and the connecting rod and the clamping The cylinder block of the cylinder is hinged.

The connecting rod is provided with a plurality of fixing holes, and the connecting rod is hinged with the clamping block through the fixing holes.

The jig and the bottom plate are integrally arranged.

The bottom end of the support column is provided with a strip-shaped installation groove, and bolts fastened to the base are arranged in the installation groove.

The present invention is provided with an air passage, and the air outlet of the air passage is located on the surface of the jig that is attached to the workpiece. When there are impurities between the tools and the workpiece is not placed in place, the gap between the workpiece and the fixture is too large, resulting in an increase in the amount of air leakage, and the pressure in the airway is abnormal. The abnormal phenomenon is fed back to the processing equipment, and the processing equipment stops processing. Avoid processing waste products.

Description of drawings

Fig. 1 is the front structural representation of the present invention;

Fig. 2 is a top view structural representation of the present invention;

Fig. 3 is a schematic diagram of the pipeline structure connected with the airway in the present invention;

Fig. 4 is a partial sectional structural schematic diagram of a jig in the present invention;

Fig. 5 is a structural schematic diagram of the clamping mechanism in the present invention.

In the figure: 1-base, 2-support column, 21-installation slot, 22-bolt, 3-bottom plate, 4-fixture, 41-air channel, 411-air inlet, 412-air outlet, 5-clamping Mechanism, 51-fixing block, 52-clamping cylinder, 53-clamping block, 54-connecting rod, 541-fixing hole, 6-air pipe, 7-air compressor, 8-air pressure detection device, 9-workpiece.

detailed description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, an air pressure detection fixture includes a base 1, a support column 2 is provided on the base 1, a base plate 3 is provided on the support column 2, and a base plate 3 is provided on the base plate 3. A jig 4 is provided, and a clamping mechanism 5 for clamping workpieces is provided on both sides of the bottom plate 3 . During processing, the workpiece 9 is placed on the fixture 4, and the two ends of the workpiece 9 are clamped by the clamping mechanism 5, thereby fixing the workpiece 9. In order to facilitate processing and fixing, the jig 4 and the bottom plate 3 are integrally provided. The bottom of the support column 2 is provided with a bar-shaped installation groove 21, and the bolts fastened to the base 1 are arranged in the installation groove 21. The position of the support column 2 can be adjusted through the installation groove 21, thereby adapting to the installation of base plates 3 of different specifications. There are multiple supporting columns 2, which are distributed around or on both sides of the bottom plate 3.

The jig 4 is provided with an air passage 41, the air inlet 411 of the air passage 41 is located on the side wall of the jig 4, the air outlet 412 of the air passage 41 is located on the surface of the jig 4 and the workpiece 9, and the air inlet 411 is connected to the air compressor 7 through the air pipe 6, and the air pipe 6 is connected with the air pressure detection device 8. Multiple air outlets 412 are provided, all of which are located on the surface of the jig 4 that is attached to the workpiece 9 , and each air outlet 412 is in communication with the air passage 41 . The air compressor 7 passes the compressed gas into the air pipe 6, and the compressed gas passes into the air passage 41 through the air pipe 6, and the air outlet 412 of the air passage 41 is closely attached to the workpiece 9, thereby controlling the air leakage of the air outlet 412, such as the workpiece 9 has Abnormally, the gap between the workpiece 9 and the jig 4 is relatively large, and the leaking volume of the air outlet 412 increases, and the air pressure detection device 8 detects that the air pressure of the air pipe 6 is abnormal.

The clamping mechanism 5 includes a fixed block 51 fixed on the support column 2, the fixed block 51 is provided with a clamping cylinder 52, the cylinder rod of the clamping cylinder 52 is hinged with a clamping block 53, and the clamping block 53 is hinged with a connecting rod 54, the connecting rod 54 is hinged with the cylinder body of the clamping cylinder 52. The connecting rod 54 is provided with a plurality of fixing holes 541 , and the connecting rod 54 is hinged to the clamping block 53 through the fixing holes 541 . When the cylinder rod of the cylinder 52 retracts, the clamping end of the clamping block 53 is lifted, and when the cylinder rod of the air cylinder stretches out, the clamping end of the clamping block 53 is driven to press down the clamping workpiece 9 .

The working process of this embodiment: first place the workpiece 9 on the jig 4, then clamp the workpiece 9 by the clamping mechanism 5, then pass the compressed air into the air passage 41, and the air pressure detection device 8 detects the pressure, if the pressure is normal Then the processing equipment processes the workpiece 9, and if the air pressure is abnormal, the processing equipment stops processing.

The above-mentioned embodiment is a preferred implementation mode of the present invention, and is not a limitation of the present invention. Without departing from the inventive concept of the present invention, any obvious replacements are within the protection scope of the present invention.

Claims (7)

1. An air pressure detection fixture, including a base (1), characterized in that: the base is provided with a support column (2), the support column is provided with a base plate (3), and the base plate is provided with a jig (4) , there are clamping mechanisms (5) for clamping workpieces on both sides of the bottom plate, an air passage (41) is provided in the fixture, the air inlet (411) of the air passage is located on the side wall of the fixture, and the outlet of the air passage The air port (412) is located on the surface of the fixture that fits the workpiece, the air inlet is connected to the air compressor (7) through the air pipe (6), and the air pipe is connected to the air pressure detection device (8). 2. The air pressure detection fixture according to claim 1, characterized in that: there are multiple air outlets (412), all of which are located on the surface of the jig (4) that fits the workpiece, and each air outlet is Communicate with the airway (41). 3. The air pressure detection fixture according to claim 2, characterized in that there are multiple support columns (2) distributed around or on both sides of the bottom plate. 4. The air pressure detection clamp according to claim 3, characterized in that: the clamping mechanism (5) includes a fixed block (51) fixed to the supporting column, and the fixed block is provided with a clamping cylinder (52), A clamping block (53) is hinged on the cylinder rod of the clamping cylinder, and a connecting rod (54) is hinged on the clamping block, and the connecting rod is hinged with the cylinder body of the clamping cylinder. 5. The air pressure detection clamp according to claim 4, characterized in that: the connecting rod (54) is provided with a plurality of fixing holes (541), and the connecting rod is hinged to the clamping block through the fixing holes. 6. The air pressure detection fixture according to claim 5, characterized in that: the jig (4) and the bottom plate (3) are integrally arranged. 7. The air pressure detection fixture according to any one of claims 1-6, characterized in that: the bottom end of the support column (2) is provided with a strip-shaped installation groove (21), and the installation groove is provided with Fasten the bolts (22) to the base.