Multi-point equal clamping device

Abstract

The invention discloses a multi-point equal clamping device applied to the field of mechanical tools. The multi-point equal clamping device is characterized by structurally comprising a plurality of claw fingers and a claw finger drive device, wherein each claw finger comprises a clamping part, and the position, towards a clamped object, of each clamping part is uniformly equipped with a pluralityof hydraulic cylinders; each hydraulic cylinder comprises an oil cylinder piston and a pressure cavity; the pressure cavity on the same claw finger is in communication; and each oil cylinder piston comprises a clamping end which extends to the outside of the corresponding clamping part. The clamping ends of the hydraulic cylinders are utilized to perform clamping operation; pressure cavities of the hydraulic cylinders communicate with one another, so that the position of hydraulic oil also can be transferred according to different pressure, and therefore, the occurrence of a condition that acting force between the clamping ends and workpieces is too high is avoided. Circulating action of the hydraulic oil guarantees stress uniformity of the surface of the clamped object, so that a workpiece damage rate is effectively reduced, and the take-up effect of the clamped object is guaranteed. Meanwhile, weakening, caused by stress deformation, of clamping force can be eliminated during claw clamping by uniform stress, so that guarantee is provided for clamping force, on the clamped objects, of the claw fingers.

Description

technical field

[0001] The invention relates to a multi-point equal clamping device applied in the field of mechanical tooling. Background technique

[0002] In the industrial production process, in order to improve industrial automation, the scope of application of the clamping device is gradually expanded. Usually, the clamping device clamps the clamped object through several fingers. Under the action of the claw finger driving device, the fingers can move back and forth relative to each other, so as to realize the stable clamping and movement of the objects by the fingers. A common clamping jaw has two or three fingers, and the clamping center of the clamping jaw is fixed, thereby ensuring the stability of the clamping operation. The contact surface between the jaw and the object is usually a planar structure, so that the contact with the object is stable. However, when the object to be clamped is an irregular plane, the clamping of the plane will cause uneven force on...

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