Multi-directional integral hot-pressing partitioning die for negative-angle parts and forming method

Abstract

The invention relates to a multi-directional integral hot-pressing partitioning die for negative-angle parts and a forming method, belongs to the field of precise sheet metal processing, and solves the problems that the negative-angle parts are difficult to integrally form at one time, tailor-welded deformation is caused, a welding seam reduces the mechanical property, and the parts rebound. The partitioning die comprises a male die, a female die, a base, rotary shafts, an ejector block and material baffle boards; the male die and the female die are all formed by splicing divided blocks; the male die consists of an insert block, a left block and a right block, the left block and the right block are inserted at two sides of the insert block, and rapid demoulding can be realized; the femaledie comprises a left half die and a right half die; the left half die and the right half die are rotationally mounted on the base; the two half dies of the female die are rotationally separated towards two sides through the ejector block which moves up and down in the middle of the base, demoulding of the female die is realized, the ejector block moves downwards, and the negative-angle parts can be integrally formed by the coupling between the male die and the female die and are fixedly shaped through multidirectional hot pressing. According to the multi-directional integral hot-pressing partitioning die for the negative-angle parts and the forming method, the problems of the part deformation, the mechanical property reduction, the parts rebounding and the like caused by tailor-welded operation are avoided, and the size precision of the parts is improved.

Description

Technical field [0001] The invention relates to the technical field of precision sheet metal processing, in particular to a multi-directional integral hot-pressing block die and a forming method for negative-angle parts. Background technique [0002] The invention belongs to the field of precision sheet metal processing. Aerospace parts are increasingly becoming more complicated. Negative angle parts are widely used in aerospace vehicles as a typical component. Negative angle parts are difficult to be integrally formed due to problems such as difficulty in demolding during forming. The conventional method is to divide the negative angle parts into several parts and form them separately; then, the divided parts are welded into an integral part by means of tailor welding. [0003] Although the conventional method solves the problem of difficult demoulding of negative angle parts, and finally realizes the processing and manufacturing of parts. However, the conventional method of proc...

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Problems solved by technology

[0005] In view of the above-mentioned analysis, the present invention aims to provide a multi-directional integral hot-press block mold and forming method for negative-angle parts. The processing method of partial forming, welding and joining together, many welds reduce the mechanical properties of the parts, the parts are easy to deform during the welding process, and heat treatment is required to eliminate the internal stress of the parts after welding, which leads to complex processing procedures and other problems

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