A multi-pass spinning forming clamping structure and spinning method for a variable-section conduit of a fuel tank

Abstract

The invention relates to a multi-pass spinning forming clamping structure and spinning method for a variable-section conduit of an oil tank. , the three-jaw chuck is fixed on the spindle of the spinning machine, the positioning block is fixed in the center hole of the three-jaw chuck, the mandrel is fixed by the positioning block and the three-jaw chuck; The wheel frame is fixed on the tool frame of the spinning machine. The specific steps of the method are: 1. Pre-set the mandrel into the equal-section tube blank to be processed; 2. Fix the axial and radial positions of the tube blank and the mandrel through the three-jaw chuck and the positioning block; 3. Use Theoretical calculation method deduced the multi-pass spinning deformation path equation of the variable cross-section conduit of the fuel tank; 4. Compiled the NC code program; 5. Imported the NC code program into the PS-CNCSXY-5-shaped spinning machine CNC system; 6. Spinning take shape. The invention can reduce manufacturing cost, improve processing efficiency and processing quality.

Description

technical field [0001] The invention belongs to the technical field of spinning forming of metal sheets, and in particular relates to a multi-pass spinning forming clamping structure and spinning method for a variable-section conduit of an oil tank. Background technique [0002] Variable cross-section tubes are widely used in the aviation field, often used in aircraft fuel tanks, and are the main components of aircraft fuel systems. Spinning is widely used in various industrial fields including aviation, aerospace and automobile because of its high efficiency, low cost and high material utilization. Since the advent of modern spinning technology, scholars at home and abroad have carried out a lot of research work on the spinning of conventional tubular parts. After continuous improvement, the precise and stable forming theory of spinning technology has been greatly developed. The variable cross-section pipes will be tested for strength before they are installed on the machi...

AI Technical Summary

Problems solved by technology

Not only can it meet the needs of small batches and urgent tasks in the manufacture of variable cross-section pipe fittings in the product pre-research and trial production stages, but it can also replace the traditional half-piece stamping and welding manufacturing process used in some fuel tank variable cross-section pipe fittings, fundamentally solving this problem. The problems of high manufacturing cost, long cycle and low quality of similar parts

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