A cushion spinning method

Abstract

The invention relates to a cushion layer spinning method, particularly adopts a method for adding a cushion layer between a spinning die and a spinning piece, solves the problem that the spinning dieis split, resulting in low quality of the inner surface, and needs to consider the problem that after the cushion layer is added, the cushion layer is separated from the spinning piece, the inventionalso provides a method for selecting a low-melting-point material as a cushion layer, with the condition that the melting point of a cushion layer material is lower than the heat treatment temperatureof the spinning piece as the best, and in addition, since a plate blank cannot be demolded due to spinning forming, the deformation angle is larger than 90 degrees, and the deformation is very acute;if a method for performing synchronous spinning forming on a normal blank and the cushion layer material, the cushion layer is likely to wrinkle during the deformation process of the blank, and the cushion layer is locally folded, so that the wall thickness of the normal spinning piece is uncontrollable; and therefore, at first, the cushion layer material is subjected to spinning forming, and then the normal blank is subjected to spinning forming, so that a layer-by-layer spinning forming method capable of enabling the blank to be attached to the cushion layer in a layer-by-layer manner is formed.

Description

technical field [0001] The invention belongs to the technical field of spinning forming, and in particular relates to a cushion layer spinning method. Background technique [0002] Spinning is a metal plastic forming method used to form thin-walled hollow rotary parts (as attached figure 1 ). It is formed by applying pressure to the rotating blank with tools such as a rotary wheel to produce continuous local plastic deformation. Usually, the metal flat blank or prefabricated blank is clamped on the mold of the spinning machine first, and the mold and the blank are driven by the spindle to rotate, and then the rotary wheel exerts pressure on the blank with a certain trajectory and moving speed, so that the blank is produced continuously and point by point. Plastic deformation, so as to obtain hollow rotating body parts with various generatrix shapes. [0003] Metal spinning is usually used for open-shaped workpieces, multi-formed cylindrical parts and conical parts, that i...

AI Technical Summary

Problems solved by technology

These protrusions reduce the quality of the inner surface of the part, and subsequent machining or grinding and polishing processes need to be added, which reduces the production efficiency. There is a problem of wall thickness out of tolerance, which leads to a decrease in product qualification rate

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