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Waist drum forming process for chain roller and forming mold

A molding process and molding mold technology, applied in the direction of metal chains, etc., can solve the problems of low processing efficiency, poor processing accuracy and molding effect, and the inability to process waist drum-shaped structures with arc curved surfaces, etc., to achieve high processing efficiency, processing accuracy and Good molding effect, reducing the effect of human intervention

Active Publication Date: 2021-08-27
浙江锐科达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing manufacturing process cannot process the waist-drum structure of the arc surface
Therefore, the existing waist drum forming process for chain rollers has the problems of low processing efficiency, poor processing accuracy and poor forming effect

Method used

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  • Waist drum forming process for chain roller and forming mold
  • Waist drum forming process for chain roller and forming mold
  • Waist drum forming process for chain roller and forming mold

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0052] Experimental Example 1: The outer surface of the chain roller prepared by the present invention is detected by a Weill profiler, and the design value of the outer end face diameter (i.e. the maximum outer diameter of the waist drum type structure) of the chain roller prepared by the present invention is φ5 .65mm, the design value of the diameter at both ends of the chain roller (that is, the minimum outer diameter of the waist drum structure) is φ5.60mm, and the length of the chain roller is 4.55mm. Test results such as Figure 4 As shown, the test shows that the surface profile radius of the chain roller obtained by the preparation process of the present invention is 110.623mm, and the deviation values ​​of the two ends and the center point in the profile in the vertical direction are respectively 0.026mm and 0.027mm, which is different from the design value 0.002mm, which means that the surface of the chain roller obtained by the preparation process of the present inv...

experiment example 2

[0053] Experimental example 2: Use a straightness measuring instrument to test the straightness of the inner hole of the chain roller, and the test results are as follows Figure 5 As shown, the test shows that the straightness deviation of the inner hole of the chain roller is within ±7 μm, indicating that the preparation process of the present invention can effectively improve the processing accuracy of the chain roller.

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Abstract

The invention discloses a waist drum forming process for a chain roller and a forming mold. The waist drum forming process comprises the following steps that firstly, a waist drum type cavity with an arc curved surface is formed in the exterior a roller blank; then extruding is carried out on an inner hole of the roller blank through a bar material, so that the outer wall, after extrusion, of the roller blank and the waist-drum-shaped cavity are attached to each other; and the waist-drum-shaped cavity is opened after extrusion forming, and material falling is carried out to obtain the finished chain roller. According to the waist drum forming process for the chain roller and the forming mold, the waist drum type chain roller with the arc curved surface can be prepared, and the process has the advantages of being high in machining efficiency and good in machining precision and forming effect.

Description

technical field [0001] The invention relates to a chain roller, in particular to a waist drum forming process and a forming mold for the chain roller. Background technique [0002] High-speed transmission chains such as automotive engine timing chains, oil pump chains, fuel pump chains, balance shaft chains, aviation chains, military vehicle chains, and ship chains mostly use roller chains as transmission pairs, and the chains in roller chains roll In order to improve its structural strength and friction, the outer wall of the chain roller will be processed into a waist drum shape, thereby improving the high-speed bearing capacity and working reliability of the roller parts. At present, the manufacturing process of the drum-shaped chain roller generally adopts the manufacturing method in the patent 201710817048.5 "Drum-shaped chain roller and its manufacturing process". Extrusion makes the two ends of the roller blank form a symmetrical tapered structure, and the middle par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21L9/02
CPCB21L9/02
Inventor 杨枚荣章伟伟殷国荣
Owner 浙江锐科达科技有限公司
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