Bottomless spherical-crown-shaped part manufacturing method

Abstract

Disclosed is a bottomless spherical-crown-shaped part manufacturing method. A current natural single-piece blanking mode is broken through, a combined-cutting processing scheme is adopted, in other words, two products are cut from one blank, material utilization rate is greatly increased, and utilization rate of raw materials is increased from original 1.6% to above 3%. Meanwhile, product quality is guaranteed, and products meeting design requirements are processed. By measurement and calculation, the raw materials are saved by about 45% for a single set of products, in other words, raw material cost is saved by more than 200 thousand RMB. A scheme of two-end bevel cutting off is adopted, so that the problem about bevel cutting off of large-diameter blanks is solved.

Description

Technical field: [0001] The invention relates to a high-precision large-diameter bottomless spherical cap thin-walled rotary body part mechanical manufacturing process. Background technique [0002] The thin-walled metal parts of the high-precision large-diameter bottomless spherical crown rotator are important components of large solid rocket motors, and each unit uses 9 pieces. The raw materials are generally formed by free forging, die forging or single-piece spinning. Due to the thin wall of such parts There is no bottom, and the process flange needs to be added for clamping. The size of the raw material is large, and the utilization rate of the material is very low. One of the traditional process methods is the free forging single-piece forming process. The blank forming method is simple, but the material utilization rate is only about 1.6%, and the processing cost is high. The second traditional process method uses die forging processing, and the material utilization ...

AI Technical Summary

Problems solved by technology

One of the traditional process methods is single-piece forming of free forging. The blank forming method is simple, but the material utilization rate is only about 1.6%, and the processing cost is high.

The second traditional process method uses die forging processing, and the material utilization rate can reach 3% to 4%. However, the blank forming method is complicated, requiring a 10,000-ton press, and the cost of the mold is high, resulting in high comprehensive processing costs and long processing cycles. , low material utilization

The third traditional process method is to use spinning blanks for processing, which requires more than 40 tons of spinning machines, and the cost of spinning molded tires is high. Due to the large spinning stress, the product quality is unstable.

Images