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Cold heading forming process of automobile safety belt torsion shaft

A molding process and seat belt technology, applied in vehicle parts, railway car body parts, metal processing equipment, etc., can solve the problems of low material utilization rate, low productivity and high labor cost, improve material utilization rate and save processing costs. , The effect of improving machining accuracy and machining efficiency

Inactive Publication Date: 2020-08-14
SIJIN INTELLIGENT FORMING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a series of disadvantages such as low material utilization rate, low productivity and high labor cost, and its material utilization rate is only about 48%.

Method used

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  • Cold heading forming process of automobile safety belt torsion shaft
  • Cold heading forming process of automobile safety belt torsion shaft

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Experimental program
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Embodiment 1

[0020] The cold heading forming process of the torsion shaft of the automobile safety belt described in this embodiment, such as figure 1 , figure 2 As shown, it includes the following steps:

[0021] a. cut material;

[0022] b. Preforming one end of the two end faces of the blank obtained in step a, and shaping the end face of the rod at the other end;

[0023] c. Upsetting the preformed end of the blank obtained in step b into a tooth blank;

[0024] d. Punching the tooth blank on the blank obtained in step c, so that the tooth is formed;

[0025] e. Upsetting the other end of the blank obtained in step d into a tooth blank with three haffle molds in the main mold;

[0026] f. The tooth blank obtained by upsetting the Huff die on the blank obtained in step e is punched to obtain a tooth shape.

[0027] In this embodiment, in order to realize the above-mentioned process, the above-mentioned process can be completed through five cold heading stations of a five-die...

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Abstract

The invention discloses a cold heading forming process of an automobile safety belt torsion shaft. The cold heading forming process comprises the following steps of a, shearing; b, preforming one endof two end faces of the blank obtained in the step a, and shaping the end face of a rod part at the other end; c, upsetting the preformed end of the blank obtained in the step b into a gear blank; d,punching the gear blank on the blank obtained in the step c, so that a gear shape is formed; e, upsetting the other end of the blank obtained in the step d into a gear blank in a main die by using three Half dies; and f, punching and cutting the gear blank obtained by upsetting the blank obtained in the step e through the Half dies to obtain a tooth profile. According to the cold heading forming process of the automobile safety belt torsion shaft, the Half dies are utilized, the rotation adjusting procedure of the blank in equipment is eliminated, the purpose of one-time forming of a part is achieved, the machining precision and machining efficiency of the part are improved, and in the process, the material utilization rate can reach 95.4%, so that the material utilization rate is greatlyimproved, and the processing cost is saved.

Description

technical field [0001] The invention relates to a process for processing a torsion shaft of an automobile safety belt, in particular to a cold heading forming process for the torsion shaft of an automobile safety belt. Background technique [0002] The torsion shaft of the car seat belt is an auto parts, which includes rectangular teeth at both ends and a shaft core in the middle, which is generally I-shaped. [0003] The traditional production and processing technology of the torsion shaft of the above-mentioned automobile seat belt is as follows: 30CrMo or 40Cr alloy steel is selected, the diameter of the metal cutting strip is larger than the diameter of the addendum circle, and the blank is cut, rough turning is machined to leave allowances for each part, heat treatment is quenched and tempered, and each part is finely turned The size is formed, and the rectangular teeth at both ends are inserted. There are a series of disadvantages such as low material utilization rate...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J5/08B23P15/00B21K7/12
CPCB21J5/002B21J5/08B23P15/00B21K7/12
Inventor 刘永华邵磊姚小龙
Owner SIJIN INTELLIGENT FORMING EQUIP CO LTD
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