Automobile semiaxle wedge cross-rolling precision shaping method
A technology for precision forming and automobile half shafts, applied in the direction of metal rolling, etc., can solve the problems of production efficiency of expensive forging methods, huge manufacturing cost of equipment, large diameter of half shaft molds, etc. The effect of reducing the number of processing steps
Inactive Publication Date: 2005-09-21
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0006] 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 mold 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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[0021] image 3 , Figure 4 and Figure 5 It is an embodiment of the multi-wedge precision forming of the semi-axle of the rear axle of the automobile. 3. Rolling is carried out between the half-axle molds of the rear axle of the wedge car. The maximum diameter of the mold is Φ850mm. The expansion diagram of the mold is as follows: image 3 , the semi-axle rolling products of automobile rear axle such as Figure 4 shown, will Figure 4 Flat forging or oscillating rolling is performed on the unrolled end of the finished automobile rear axle half-axle, and then local finishing is performed to obtain the finished automobile rear axle half-axle such as: Figure 5 shown.
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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 [0001] The invention belongs to the technical field of plastic forming of shaft parts, and particularly provides a multi-wedge precision forming method for automobile semi-axle cross wedge rolling, which is suitable for rolling and forming of large-scale long shaft parts. Background technique [0002] The car half shaft is one of the key parts of the car, which belongs to the large-scale long shaft parts (greater than 900mm). At present, there are two main methods for producing half shafts at home and abroad: [0003] 1) Forging into shape, its production efficiency is 0.3 to 0.5 pieces per minute, and the material utilization rate is about 65%; [0004] 2) Cross-wedge rolling and single-wedge rolling to form, its production efficiency is 2 to 6 pieces per minute, and the material utilization rate is 78 to 82%. [0005] Cross wedge rolling and single wedge rolling forming and forging, although the production efficiency and material utilization rate have bee...
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IPC IPC(8): B21H1/00
Inventor 束学道胡正寰邢希东王宝雨张康生李玉京张巍刘晋平杨翠平
Owner UNIV OF SCI & TECH BEIJING