Closed variable-section thin-wall piece viscous medium pressure forming device

Abstract

The invention relates to the technology of aerospace thin-wall piece machining and manufacturing, in particular to a closed variable-section thin-wall piece viscous medium pressure forming device. Theclosed variable-section thin-wall piece viscous medium pressure forming device comprises a forming die of a sectioned insert structure, a forming medium seal ring, a forming die sleeve, a viscous medium injection cylinder, a viscous medium loading power source hydraulic cylinder and a forming die end portion seal loading power source hydraulic cylinder. Each of the upper end and the lower end ofthe interior of a barrel blank is provided with one positioning block, the upper positioning block is in a closed form, and the lower positioning block is in a hole opening form. The viscous medium injection cylinder is arranged at the bottom of the forming die and communicates with an inner hole of the lower positioning block, and viscous media are injected into the barrel blank through the injection cylinder. The viscous medium loading power source hydraulic cylinder is arranged at the bottom of the viscous medium injection cylinder. The forming die end portion seal loading power source hydraulic cylinder is arranged on the top of the forming die, and loading force is provided for end portion seal. The device is simple in structure and easy to operate, control stability is good, and closed variable-section thin-wall piece viscous medium pressure forming can be achieved.

Description

technical field [0001] The invention relates to the processing and manufacturing technology of thin-walled parts with closed cross-section and sudden curvature in the aerospace field, in particular to a viscous medium pressure forming device for thin-walled parts with closed variable cross-section. Background technique [0002] The thin-walled part with a local curvature mutation of closed variable cross-section is a common special-shaped curved surface shell structure in the aerospace field. structure, the local deformation is large, the material is not easy to be replenished during forming, and it is prone to local severe thinning and even rupture. This is mainly due to the unreasonable design of the manufacturing equipment model and the improper loading force. Contents of the invention [0003] The technical problem to be solved by the present invention lies in the problems of local thinning and rupture in the forming of the existing closed variable cross-section local...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention lies in the problems of local thinning and rupture in the forming of the existing closed variable cross-section local curvature sudden change components, which cannot be integrally formed

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