A method for controlling the wall thickness of a large-thickness 5B70 aluminum alloy mother-line-folding rotary part

Abstract

The application discloses a 5B70 aluminum alloy large-thickness folded generatrix rotary piece wall thickness control method, which comprises the following steps: selecting a proper rotary forming temperature according to the mechanical properties of product materials; selecting a spinning wheel radius according to product blank thickness; designing one-pass rotary forming of a top arc surface according to the minimum half-cone angle of the top arc surface, and calculating the gap value between the spinning wheel track and a die; designing multi-pass rotary forming of a side wall cone surface according to the half-cone angle of the side wall; setting a return tool rotary pass according to the final thickness requirement of the product; calculating the gap value between the spinning wheel track of the last pass and the die according to the final size precision requirement of the product, and performing last-pass sizing rotary forming. The application effectively controls the wall thickness reduction of the spinning process of the large-angle folded generatrix rotary piece formed by using a 70mm thick plate blank within 35%, and guarantees that the overall thickness of the product meets the requirement while the size precision of the product is considered.

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