A new clamping device for thin-walled parts

Abstract

The invention discloses a novel clamping device for a thin-wall part. The novel clamping device comprises a supporting part, a positioning part arranged on the supporting part, a suction cup fixing part arranged on the positioning part and used for fixing the thin-wall part, and a driving part used for driving the suction cup fixing part to move on the positioning part and comprising a rotation motor. The positioning part is provided with at least one circle of round guide rail and a center pillar arranged in the center of the supporting part. The suction cup fixing part is provided with multiple supporting pillar assemblies arranged on the round guide rail. Each supporting pillar assembly is provided with a supporting pillar and a suction cup arranged on the top of the supporting pillar, wherein the bottom of the supporting pillar is arranged on the round guide rail, and the suction cup is used for adsorbing and fixing the thin-wall part through negative pressure generated by a vacuum pump. The center pillar is provided with a base fixed to the supporting part, a rotation pillar which is arranged on the base and is capable of rotating in the base, and sleeving connecting parts connected to the rotation pillar in a sleeeving manner. After the supporting pillars are connected with the sleeving connecting parts through connecting pieces and when the rotation motor drives the rotation pillar to rotate, the supporting pillars can be driven to move in the guide rail.

Description

technical field [0001] The invention relates to a novel clamping device for thin-walled parts, which belongs to the field of machinery. Background technique [0002] In the field of mechanical processing, thin-walled parts have complex shapes, mostly complex curved surfaces, and relatively small rigidity. When CNC machining thin-walled parts, the processing deformation of the workpiece due to insufficient rigidity becomes the main problem affecting the dimensional accuracy. Therefore, the thin-walled parts with curved surfaces Processing is more difficult. [0003] There are many kinds of modern mechanical products, the product design cycle is short, and the replacement is fast. The traditional mass production mode is gradually replaced by the small and medium batch production mode. The method of designing professional fixtures according to a single variety can no longer meet the requirements of the production and development of modern mechanical products. In such a situat...

AI Technical Summary

Problems solved by technology

The disadvantages of this clamping method are: 1) For phase-change flexible fixtures, there are currently few phase-change materials that can meet the performance requirements of the fixture, and they are mainly composed of paraffin-based, water-based, low-melting-point alloy-based, etc., but they There is a big defect of insufficient clamping force

2) For the pseudo-phase-change flexible fixture, it can only be used in a few cases such as surface positioning or finishing with slight processing force, and many issues remain to be studied

The disadvantages of this clamping method are: 1) the movement of the pillar in the X and Y directions on the horizontal plane, the flexibility of the fixture is not particularly good; 2) the clamping force is difficult to control, and the shape of thin-walled parts is relatively limited

[0010] 1) The degree of flexibility is not high, the shape of the processed parts is relatively limited, and the rough and fine machining methods are limited

[0011] 2) The fixture adjustment time is long, the cost is high, and the clamping force is difficult to adjust and control

[0012] 3) The adaptability is poor, the adjustment of the fixture is too dependent on experience, and the accuracy is difficult to control

[0013] It can be seen that all of the above can no longer meet the growing needs of precision machining.

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