Automobile semiaxle wedge cross-rolling precision shaping method

Abstract

The invention provides a wedge cross-rolling multi-wedge precisely-molding method of auto half shaft, installing multi-wedge mould with 2-6 wedge pairs in the wedge cross roller to roll the half shaft, heating circular stick to 1000-2000 deg.C, inputting two parallel-rotating multi-wedge moulds with 2-6 wedge pairs through axial feeding device to roll. The mould parameters: molding angle, alpha=18-34 degrees, stretching angle, beta=4-12 degrees. It can roll the half shaft at the same time.

Description

technical field The invention belongs to the technical field of plastic forming of shaft parts, and in particular provides a multi-wedge precision forming method for automobile half shaft cross wedge rolling, which is suitable for rolling forming of large long shaft parts. Background technique The car half shaft is one of the key parts of the car, which belongs to the large long shaft part (greater than 900mm). At present, there are two main methods of producing half shafts at home and abroad: 1) Forging and forming, its production efficiency is 0.3-0.5 pieces per minute, and the material utilization rate is about 65%; 2) cross wedge rolling and single wedge rolling, its production efficiency is 2-6 pieces per minute, and the material utilization rate is 78-82%. Cross wedge rolling, single wedge rolling forming and forging forming, although the production efficiency and material utilization rate have been greatly improved, but because the half shaft is a large long sha...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a multi-wedge precision forming method for automobile half-shaft cross-wedge rolling, which solves the problems of single-wedge production half-shaft die diameter, huge equipment, expensive manufacturing cost, low production efficiency and low material utilization rate of the forging method. , realize the economical production of half shaft

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