Dual-station expanding machine for special-shaped pipe with variable cross sections

Abstract

The invention discloses a dual-station expanding machine for a special-shaped pipe with variable cross sections, belonging to the field of machining; the dual-station expanding machine comprises a frame; the frame is provided with an upper mould, lower moulds, a main press cylinder and material supplying oil cylinders; the material supplying oil cylinders include a left material supplying oil cylinder and a right material supplying oil cylinder which are respectively fixed at two sides of the upper mould; the lower moulds include two sets of moulds which are arranged on a guide rail and used for working alternatively. The material supplying oil cylinders are fixed at two sides of the upper mould, so that the expanding machine provided by the invention can effectively reduce the volume of the oil cylinder and a working sealed chamber and can improve the servo control precision to realize rapid response and precise location. Meanwhile, the equipment structure is simplified, the equipment requirements are reduced and the manufacturing cost is reduced. The two sets of lower moulds are matched with the same upper mould during working, so that the lower moulds have two operation stations during working, one lower mould is expanded in a mould closing state and the other mould is stretched outside the frame to assemble and disassemble workpieces; therefore, the equipment waiting time is saved and the production efficiency is increased.

Description

technical field [0001] The invention relates to a bulging device for variable-section special-shaped pipe fittings, in particular to a double-station bulging device that uses ultra-high pressure water as a forming medium and is mainly used for the overall processing of variable-section special-shaped pipe fittings. Background technique [0002] The integrally formed parts of variable cross-section heterogeneous pipe fittings have the advantages of low cost, light weight, and superior mechanical properties. They have a wide range of application requirements in many industries, especially in the manufacturing fields of automobiles, aviation and mobile equipment. It determines the performance of its overall equipment. But at the same time, the manufacture of variable cross-section anisotropic pipe fittings has high requirements for equipment, technology, and expanding process. At present, two traditional processing methods are commonly used in the world for variable cross-sect...

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Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention designs a double-station variable-section special-shaped pipe fitting bulging machine, which solves the problems of bulky, complicated operation and low work efficiency of the prior art bulging equipment

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