Miniature pipe two-way hydraulic forming device

Abstract

The invention discloses a miniature pipe two-way hydraulic forming device, which comprises a PLC (programmable logic controller) control module, an inner-pressure pressure pump, an outer-pressure pressure pump, an inner-pressure pressure booster, an outer-pressure pressure booster, an inner-pressure one-way valve, an outer-pressure one-way valve, an inner-pressure high-pressure needle valve, an outer-pressure high-pressure needle valve and an oil tank forming mold, wherein the forming mold comprises a guide block, a cylinder casing, an embedding block, an edge pressing ring and a sealing block. The miniature pipe two-way hydraulic forming device has the advantages that the pressure can be simultaneously exerted on the inner and outer surfaces of a miniature pipe, the miniature pipe is driven to be formed through pressure difference, the generation and the increase of tiny cracks inside the miniature pipe and the generation of nucleation can be prevented through the introduction of back pressure, further, the plastic forming capability of the miniature pipe is greatly improved, in addition, the sealing design is reasonable, the sealing performance is greatly improved, the PLC control is more precise and more reliable, and the response speed is higher.

Description

technical field [0001] The invention belongs to the technical field of microtube forming, in particular to a bidirectional hydroforming device for microtubes. Background technique [0002] The hydroforming technology of pipe fittings uses pipe blanks as raw materials. By applying liquid pressure and axial load to the pipe cavity, plastic deformation occurs in a given mold cavity, and the pipe wall is bonded to the inner surface of the mold to obtain Forming technology for parts of desired shape. At present, the hydroforming of pipe fittings is mainly used in the manufacture of automobile frame and chassis parts, large ships, and the aerospace industry. However, with the development of science and technology, the demand for micro-hollow pipe fittings in the electronics, medical, micro-device and other industries is increasing. There is an urgent need for a processing technology that can manufacture micro-pipe fittings in large quantities. Micro-pipe hydroforming is exactly i...

AI Technical Summary

Problems solved by technology

This method can greatly improve the plastic forming ability of microtubes, but so far, there is no suitable device to realize this process

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