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Multi-station cold heading forming technology of automobile door limiter

A technology of automobile door and forming process, which is applied in the direction of metal processing equipment, etc., and can solve the problems of being unsuitable for mass production, low efficiency, and low service life

Active Publication Date: 2013-11-06
浙江裕泰汽车配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first flange 2 and the polished rod 1 are integrally formed into a first part, the second flange 3, the screw 4 and the cylinder 5 are integrally formed into a second part, and then welded The first part is welded to the second part to form figure 1 The defect of the automobile door stopper shown in the welding process is that the qualified rate of the finished product formed by welding the first part and the second part is low, and at the same time, the weld seam needs to be cleaned after welding, which is not suitable for Mass production, in addition, even if the finished product is qualified, due to the welding stress concentration in the welding part, the service life of the product is low
This kind of process consumes a lot of raw materials, the cost is high, and the processing time is long and the efficiency is low.

Method used

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  • Multi-station cold heading forming technology of automobile door limiter
  • Multi-station cold heading forming technology of automobile door limiter
  • Multi-station cold heading forming technology of automobile door limiter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a production such as figure 1 The multi-station cold heading forming process of the automobile door stopper product shown includes the following steps in sequence:

[0047] A. Cutting material: Cut the raw material into a blank of predetermined shape. Here, the raw material is 40Cr steel (GB / T3077) and its chemical composition is shown in Figure 8 , the blank is cut into a cylindrical blank, see figure 2 ;

[0048] B. Shaping: Cold extrusion is performed on the billet to form a first intermediate body, which includes a rod body 11 and a second round table 7 connected to the rod body 11 through a first round table 6, the first round table The large circular surface of the circular platform 6 is directly connected with the large circular surface of the second circular platform 7 and has the same diameter, and the small circular surface of the first circular platform 6 is directly connected with the rod body 11 and has the same diameter. imag...

Embodiment 2

[0065] This embodiment provides a production such as figure 1 The multi-station cold heading forming process of the automobile door stopper product shown includes the following steps in sequence:

[0066] B. Cutting: Cut the raw material into a blank of predetermined shape. Here, the raw material is 40Cr steel (GB / T3077) and its chemical composition is shown in Figure 8 , the blank is cut into a cylindrical blank, see figure 2 ;

[0067] B. Shaping: Cold extrusion is performed on the billet to form a first intermediate body, which includes a rod body 11 and a second round table 7 connected to the rod body 11 through a first round table 6, the first round table The large circular surface of the circular platform 6 is directly connected with the large circular surface of the second circular platform 7 and has an equal diameter, and the small circular surface of the first circular platform 6 is directly connected with the rod body 11 and has an equal diameter, see image 3 ;...

Embodiment 3

[0084] This embodiment provides a production such as figure 1 The multi-station cold heading forming process of the automobile door stopper product shown includes the following steps in sequence:

[0085] C. Cutting: Cut the raw material into a blank of predetermined shape. Here, the raw material is 40Cr steel (GB / T3077) and its chemical composition is shown in Figure 8 , the blank is cut into a cylindrical blank, see figure 2 ;

[0086] B. Shaping: Cold extrusion is performed on the billet to form a first intermediate body, which includes a rod body 11 and a second round table 7 connected to the rod body 11 through a first round table 6, the first round table The large circular surface of the circular platform 6 is directly connected with the large circular surface of the second circular platform 7 and has the same diameter, and the small circular surface of the first circular platform 6 is directly connected with the rod body 11 and has the same diameter. image 3 ;

...

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Abstract

The invention relates to the manufacturing technology of automobile components, and in particular relates to a cold heading forming technology of an automobile door limiter. The multi-station cold heading forming technology for automobile door limiting columns and similar things provided by the invention comprises the steps of shaping, pre-forming, first flange forming, screw hole forming, second flange forming and the like; the steps of shaping, pre-forming, first flange forming and screw hole forming are performed at different stations of the same cold header; and the steps of pre-forming and shaping are specifically designed so as to avoid workpiece cracking in the forming process and prolong the service life of the mould.

Description

technical field [0001] The invention relates to a manufacturing technology of automobile parts, in particular to a cold heading forming process of an automobile door stopper. Background technique [0002] figure 1 Shown is a kind of automobile door stopper, which includes a polished rod 1, a first flange 2 formed on the bottom of the polished rod 1, and a second flange 3 formed on the upper part of the polished rod 1 , a screw 4 connected to the second flange 3 and a column 5 connected to the screw 4 . There are mainly two traditional processing methods for this kind of automobile door stopper. [0003] The first forming method is: production by welding process. The first flange 2 and the polished rod 1 are integrally formed into a first part, the second flange 3, the screw 4 and the cylinder 5 are integrally formed into a second part, and then welded The first part is welded to the second part to form figure 1 The defect of the automobile door stopper shown in the weld...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00
Inventor 沈永瑞
Owner 浙江裕泰汽车配件有限公司