Bottomless spherical-crown-shaped part manufacturing method

A manufacturing method and a bottomless ball technology are applied in the field of high-precision large-diameter bottomless spherical cap thin-walled rotary parts mechanical manufacturing process, which can solve the problems of long processing cycle, unstable product quality, and high mold cost, and achieve cost savings. , Solve the problem of bevel cutting and improve the effect of material utilization

Active Publication Date: 2014-04-09
XIAN AEROSPACEMOTOR MACHINE FACTORY
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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-to

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  • Bottomless spherical-crown-shaped part manufacturing method
  • Bottomless spherical-crown-shaped part manufacturing method
  • Bottomless spherical-crown-shaped part manufacturing method

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Example Embodiment

[0026] This embodiment is a method for manufacturing a bottomless thin-walled spherical crown-shaped part. The material of the processed parts is 30CrMnSiA high-strength steel, and the hardness reaches HRC33~38 after quenching and tempering. The inner diameter of the small end of the bottomless spherical crown part is 467~480mm, and the outer diameter of the big end is 549~560mm; the height of the bottomless spherical crown part is 57mm and the wall thickness is 2.3mm; the spherical radius of the inner shape of the bottomless spherical crown part It is 316mm.

[0027] The specific processing steps of this embodiment are:

[0028] Step 1. Select the blank of the bottomless spherical crown part. According to the designed processing of bottomless spherical crown-shaped parts, the outer diameter of 580mm, the inner diameter of φ360mm, and the height of 170mm are selected as the blank 1 for forgings. Two bottomless spherical crown-shaped parts are sleeved on the blank. The selected ...

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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 ...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 田珍珠陈文会张立武曲中兴庞勇李长洪韩冬陈刚刘琦魏亚强牛警惕张广成高小宁吴大荣岳彩荣陈远东闫学荔任长洁刘如媛邓高峰
Owner XIAN AEROSPACEMOTOR MACHINE FACTORY
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