Rotary vacuum clamp

Abstract

The invention discloses a rotary vacuum clamp. The clamp comprises a central body, wherein the central body is of a prismatic structure with center symmetry, the prismatic structure has a sealed innercavity surrounded by two end faces and a prismatic face, the outer surface of the prismatic face is fixedly connected to a support body protruding outward, the support body has an outer surface and two side surfaces that are perpendicular to each other, the support body is provided with a sealing structure on the outer surface, and the outer surface of the support body surrounded by the sealing structure is provided with an air hole running through towards the interior of the central body; the structural section formed by the central body and the support body is centrally symmetrical; one endof the central body is provided with an air pipe communicating with the inner cavity, and the other end of the air pipe is connected to a vacuuming device. The rotary vacuum clamp provided by the invention uses vacuum to suck and fix a U-shaped plate on the support body without displacement during processing. At the same time, the support block forms an effective support during the process of punching the U-shaped plate, thereby preventing parts from being deformed during the processing.

Description

technical field [0001] The invention relates to a machining fixture, in particular to a rotary vacuum fixture used for opening holes in a sheet-shaped U-shaped part. Background technique [0002] A right-angled U-shaped plate formed by bending a rectangular sheet needs to be punched with several large and small holes on its front and two bent surfaces. Since there is a large hole on the bending surface, the diameter of the hole is only slightly smaller than the width of the bending surface. If the steel plate is punched first and then bent, the regular shape of the U-shaped plate cannot be guaranteed due to uneven stress. It is difficult to clamp if it is U-shaped and then punched. Therefore need a kind of special-purpose clamping U-shaped plate so that the fixture that can punch in its bending surface. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the invention provides a rotary vacuum clamp, which can clamp a U-shaped plate so as to pu...

AI Technical Summary

Problems solved by technology

Since there is a large hole on the bending surface, the diameter of the hole is only slightly smaller than the width of the bending surface. If the steel plate is punched first and then bent, the regular shape of the U-shaped plate cannot be guaranteed due to uneven stress. It is difficult to clamp when it is U-shaped and then punched

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