A Laser Prestressed Forming Fixture with Loading and Springback Measurement

Abstract

A laser prestress forming clamp having a loading and springback measurement function is composed of a rigid frame, an upper beam, a lower beam, a connecting beam, a dial gage (comprising a magnetic gage base) and a screw rod press block module. The rigid frame is formed by enabling two columns to be connected with an upper connecting rod and a lower connecting rod. One end of the upper beam is provided with a round hole, the other end of the upper beam is provided with a strip-shaped hole, and the upper beam is connected with the rigid frame through a top sliding rail. Two ends of the lower beam are T-shaped, and the lower beam is connected with the rigid frame. Two ends of the connecting beam are provided with connecting holes, and the connecting beam is connected with the lower beam. A screw rod press block is composed of a screw rod press rod and a strip-shaped press block, the lower end of the screw rod press rod is provided with a hexahedron plane, the upper portion of the screw rod press rod is provided with an I-shaped head, the outer surface of the strip-shaped press block is semicircular, a T-shaped groove is arranged in the strip-shaped press block, and the strip-shaped press block is connected with the screw rod press block. The dial gage is chosen according to the measurement requirements and arranged on the upper portion of the upper beam. The clamp is simple in structure and high in adjustability, has universality for prestress clamping of wallboard workpieces of different shapes and simultaneously can monitor loading and springback displacement changes.

Description

technical field [0001] The invention provides a laser prestressed forming fixture with loading and springback measurement, which is mainly used in laser prestressed forming of metal components. It belongs to the technical field of aviation manufacturing. Background technique [0002] The prestressing fixture is a kind of process equipment that applies elastic bending to the plate during laser prestressing forming. It does not function as a forming mold, but only generates a predetermined tensile stress (not exceeding the yield strength of the material) on the surface of the plate subject to laser action, which is used to increase the forming curvature in the pre-bending direction and overcome the deformation tendency of laser forming. The plate is bent and deformed in the desired direction to obtain parts that meet the shape requirements. [0003] In aircraft manufacturing technology, laser prestressed forming of large panel sheet metal parts is a new forming process metho...

AI Technical Summary

Problems solved by technology

The test shows that this kind of clip-type fixture can not achieve the expected results, and it will rebound after the clip is released. At the same time, a set of clips is limited to one kind of wall panel parts. For the wall panels that have changed in shape, the clips do not have Versatility

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