Composite forming method of component with large-angle thin-wall twisted narrow-depth cavity feature

Abstract

The invention relates to a composite forming method of a component with a large-angle thin-wall twisted narrow-depth cavity feature. The composite forming method comprises the steps of model reconstruction, mold manufacturing as well as processing and forming; the model reconstruction comprises the steps that a three-dimensional model of the component is reconstructed in software, two side wing thin walls of the component three-dimensional model are unfolded outwards towards the two sides to form the three-dimensional model of a pre-machined part; mold manufacturing comprises the steps that acorrecting mold comprising a plurality of mold components is manufactured according to the outline design of the component; and processing and forming comprise the steps that production and processingof the pre-machined parts of a plate part is performed, then, the two side wing thin walls which are unfolded outwards of the pre-machined part are heated and folded inwards by using the correcting mold, and component processing is completed. Compared with the prior art, the component is reconstructed into the pre-processing part with no deep-cavity features, the side wing sheets on the two sidescan be recovered to form the large-angle twisted narrow-depth cavity during heating and folding, the defect that the narrow-depth cavity is damaged or lost due to the fact that the cutting processingis directly adopted can be overcome, and the product precision and the finished product rate are guaranteed to the maximum degree.

Description

technical field [0001] The invention relates to the field of mechanical engineering, in particular to a compound forming method for a component with large-angle thin-wall twist and narrow deep cavity. Background technique [0002] The processing of parts with large-angle twist, thin-walled and narrow-deep cavity has always been a difficult problem in manufacturing. In the field of aerospace, this part is often used for the metal wrapping of the leading edge of composite fan blades of aero-engines. Since the aero-engine composite fan blade has the characteristics of a gradual change to a dramatic change in angle from the tenon root to the blade tip, the titanium alloy reinforcement attached to it needs to be conformally designed to form a cladding structure. Moreover, considering the inherent differences between carbon fiber materials and titanium alloy materials, in order to be consistent in strength design, this type of titanium alloy reinforcement sheet has the unique str...

AI Technical Summary

Problems solved by technology

However, due to the poor structural rigidity and poor cutting performance of such lightweight and high-strength parts, there are often problems such as material deformation, springback, tool vibration, and tool clearance during processing, which affects the geometric accuracy, cutting surface quality, and processing efficiency of components.

At the same time, the existing processing methods still have problems such as low material utilization rate, low yield rate, long manufacturing cycle, and high processing cost.

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