Flexible cutting clamp for multi-curvature long-strip parts and cutting method of flexible cutting clamp

Abstract

The invention discloses a flexible cutting clamp for multi-curvature long-strip-shaped parts and a cutting method of the flexible cutting clamp, and belongs to the technical field of composite material forming. The flexible cutting clamp comprises a supporting base, a supporting plate assembly arranged on the supporting base and used for limiting transverse movement of the parts, a hook spring used for limiting longitudinal movement of the parts, round bar connecting rods arranged at the two ends of the supporting base and used for fixing the hook springs, and supporting rods connected with the round bar connecting rods; the supporting plate assembly is composed of a plurality of supporting plates which are different in inclination angle and height and fixed to the supporting base; the bottoms of the parts are clamped to the supporting plates; and the hook springs are pressed on the parts, and the two ends of the hook springs are connected with the round bar connecting rods. According to the flexible cutting clamp and the cutting method thereof, a plurality of similar long-strip thin-wall curved-surface parts can be cut by one set of clamp, so that a large amount of tool cost and cutting preparation time are saved, the part cutting efficiency is greatly improved, and the problems that each part needs a cutting clamp, the cost is high and the efficiency is low in the prior art are solved.

Description

technical field [0001] The invention relates to the field of composite material processing, in particular to a flexible cutting fixture and a cutting method for multi-curvature elongated parts. Background technique [0002] In order to reduce air resistance, the shape of the aircraft is mostly multi-curved according to aerodynamics. Currently, there is a large category of these multi-curved shape parts, which are mainly assembled and welded by a plurality of thin-walled parts with different curvatures. After such long thin-walled parts are formed, it is usually necessary to design and manufacture a corresponding cutting fixture according to the curvature of each part to ensure the dimensional accuracy and position accuracy of the part cutting during cutting. Usually, the cutting fixture needs to have the upper and lower molds with the same shape as the part, and the part is fixed and clamped between the upper and lower molds, and then the shape of the part is cut with a hig...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high cost and low efficiency that each kind of parts need cutting jigs, and according to the characteristics of multi-curved "several"-shaped parts, a flexible cutting jig and cutting method for multi-curvature long strip parts are provided. A set of jigs can realize the cutting of multiple similar long thin-walled curved parts, saving a lot of tooling costs; and the cutting jig is convenient and quick to clamp parts, and does not need to be frequently replaced in multiple sets of tooling, saving a lot of cutting preparation time , greatly improving the cutting efficiency of parts

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