Eccentric spinning forming method of aluminum hub

Abstract

The invention relates to an eccentric spinning forming method of an aluminum hub. A mold used in the method comprises an upper spinning mold, a lower spinning mold, a driving shaft, an outer driven shaft, an inner driven shaft, a support shaft, a mandrel, a shaft sleeve, screws and the like, wherein the upper spinning mold is mounted on the driving shaft and rotates around a main axis; the lower spinning mold is mounted on the outer driven shaft and rotates around the eccentric axis; and the support shaft is mounted on the inner driven shaft and rotates around the main axis. The forming methodcomprises steps as follows: a flaring punching blank is placed on the support shaft, and the upper spinning mold presses the flaring punching blank; a spinning roller feeds along the molded line of the outer wall of the rim of a given spinning blank in the horizontal and vertical directions while applying extrusion force to the rim of the flaring punching blank, after multiple passes of spinningare performed, eccentric spinning is performed to form a spun blank, and a root groove structure is formed; the spinning roller returns to the initial position, the upper spinning mold is opened, andthe spun blank moves rightwards in the horizontal direction and moves upwards in the vertical direction, and the spun blank is taken out.

Description

technical field [0001] The invention belongs to the manufacture of aluminum alloy wheels in the field of nonferrous metal metallurgy, and relates to an eccentric spinning forming method of aluminum alloy wheels. Background technique [0002] The manufacturing process of automotive aluminum alloy wheels includes casting, forging spinning and casting spinning. At present, China has become the world's largest aluminum alloy wheel manufacturing base. While meeting domestic demand, China also exports a large number of aluminum alloy wheels abroad. It is the world's largest exporter of aluminum alloy wheels. [0003] However, the manufacturing process of aluminum alloy wheels has not reached the international leading level, and some aluminum alloy wheels with special structures still need to be manufactured by turning or milling, and cannot be processed by casting, forging, and spinning processes. For example, the root groove structure at the joint between the spoke and the rim i...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problem that the root groove structure at the connection between the spoke and the rim of the current aluminum alloy wheel hub cannot be formed by spinning, and to provide an eccentric spinning forming method for the aluminum alloy wheel hub

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