Rotating extrusion forming method for cabin section workpiece

Abstract

The invention provides a rotating extrusion forming method for a cabin section workpiece. The method comprises the following steps that firstly, a hollow circular truncated cone-shaped blank is prepared; the prepared blank is heated to the forming temperature and subjected to heat preservation, and a female die and a male die are preheated to the temperature higher than the forming temperature andsubjected to heat preservation; then an upper die assembly is assembled on a press; a lubricant is applied to the female die and the male die, and the blank is placed into a die cavity of the femaledie and fixed; a rotating driving device is started to drive the female die to rotate on a lower die seat, and the female die drives the blank to rotate; the press is started, the press moves the maledie down to the machining position of the blank in the die cavity through the upper die assembly, and the inner side wall of the blank is machined; and after the blank is machined and formed, the press moves the male die up to a preset position through the upper die assembly. According to the scheme, cutting machining is avoided, the material utilization rate is improved, the subsequent machiningconsumption is reduced, therefore the production cost is reduced, the production efficiency is improved, and the occurrence of the wall thickness difference is reduced.

Description

technical field [0001] The invention belongs to the technical field of extrusion molding dies, in particular to a rotary extrusion molding method for cabin workpieces. Background technique [0002] As a kind of thin-wall load-bearing structure, special-shaped thin-walled cabin parts are widely used in aerospace, civil engineering, chemical industry, shipbuilding and other fields; in the existing plastic forming process, for special-shaped thin-walled cabin parts with inconsistent wall thickness, The main part with inconsistent wall thickness cannot be formed by forward extrusion and reverse extrusion. The general forming method is: first extrude the conical cylindrical part with equal thickness, and then turn the thin-walled part; but this forming method has the following shortcoming: [0003] First, the wall thickness of the cylinder must meet the maximum molding size, wasting materials; [0004] Second, all streamlines are cut off to reduce the carrying capacity of thin-...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies in the above-mentioned technologies, and propose a rotary extrusion molding method for cabin workpieces, aiming to solve the problem of material waste in the process of forming the existing special-shaped thin-walled cabin workpieces

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