METHOD FOR MANUFACTURING ALUMINIUM ALLOY AUTOMOBILE HUB

摘要

Provided is a method for manufacturing an aluminium alloy automobile hub, the method comprising the following steps: putting a workpiece (1) in the shape of a shallow hat on a first spinning base (3), wherein an opening of the workpiece (1) faces upward, and a first upper pressure head (2) extends into the workpiece (1) from above and then fixes the workpiece (1); and pressing out a rim for spokes on an outer side of a lower portion of the workpiece (1) by means of spinning rollers (5). In the method, 6-series and improved aluminium alloy sheets are taken as raw materials and are integrally formed by multi-pass powerful spinning machining, such that same are deformed step by step in the whole process according to the properties of aluminium alloy, thereby forming a blank of the hub, and then the hub is formed by finishing. The hub, as a whole, is free of weld joints, has high strength, stable quality and light weight, and is applicable to electric buses, trucks, cars, electric cars, etc. The hidden quality problems in casting an aluminium hub are solved, the material stability of the forged aluminium hub is ensured, the investment cost is low, and there is no pollution.