Non-standard toothed chain processing method and non-standard toothed chain

A processing method and tooth marking technology are applied in the direction of metal chains, metal material coating technology, solid-state diffusion coating, etc., which can solve the problems of low meshing accuracy of toothed chains, loud noises of toothed chains, and poor fatigue resistance. Achieve the effect of improving meshing accuracy, improving strength and good fatigue resistance

Active Publication Date: 2019-02-01
湖州求精汽车链传动有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002]In the existing mid-level passenger car engine gas distribution system, using the existing national standard toothed chain will lead to low meshing accuracy of the toothed chain, thus Causes greater noise when the toothed chain is used; and its strength is lower, fatigue resistance is poor and wear resistance is poor
Therefore, the toothed chains used in the existing mid-level passenger car engine gas distribution system have the problems of low meshing accuracy, high noise during operation, low strength, poor fatigue resistance and poor wear resistance.

Method used

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  • Non-standard toothed chain processing method and non-standard toothed chain

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the examples, but not as a basis for limiting the present invention.

[0028] Example. Non-standard tooth chain processing methods, such as figure 1 , 2 , 3, and 4, including the following steps,

[0029] a. Punching, using a progressive die to carry out precision blanking on multiple chain plates 4 at the same time, so that the chain plate holes 5 and the sides of the chain plates 4 are all 100% bright, and the A product is obtained;

[0030] b. Carry out isothermal quenching treatment to product A, so that the hardness of chain plate 4 reaches 50-54HRC, and product B is obtained;

[0031] c. Carry out carbonitriding treatment on the guide plate 2, so that the hardness of the guide plate 2 reaches 45-50HRC, and obtain product C;

[0032] d. Carry out compound heat treatment of carbonitriding and isothermal quenching on the pin shaft 1, and finally carry out cryogenic treatment, so that the ha...

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Abstract

The invention discloses a method for machining a non-standard silent chain. The method comprises the steps that a progressive die is used for conducting precision blanking on a plurality of chain plates simultaneously to enable holes and side edges of the chain plates to be brightened completely; the chain plates are subjected to isothermal quenching treatment, and guide plates are subjected to carbonitriding treatment; pin shafts are subjected to carbonitriding and isothermal quenching complex heat treatment and then subjected to subzero treatment, grinding and polishing; and finally the chain plates, the guide plates and the pin shafts are assembled, and prestretching and running-in are carried out after assembling is completed. By means of the method, the engagement accuracy can be improved, noise can be reduced, and the non-standard silent chain also has the advantages of high strength, good anti-fatigue performance and good abrasion resistance.

Description

technical field [0001] The invention relates to a non-standard toothed chain processing method and the non-standard toothed chain, in particular to a non-standard toothed chain processing method and the non-standard toothed chain for the gas distribution system of an engine of a mid-level passenger car. Background technique [0002] In the existing mid-level passenger car engine gas distribution system, the use of the existing national standard toothed chain will lead to low meshing accuracy of the toothed chain, which will cause greater noise when the toothed chain is used; and its strength Lower, poorer fatigue resistance and poorer wear resistance. Therefore, the toothed chains used in the existing mid-level passenger car engine gas distribution system have the problems of low meshing accuracy, high noise during operation, low strength, poor fatigue resistance and poor wear resistance. . Contents of the invention [0003] The object of the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21L9/04B21L9/06C23C8/30C21D1/20B23P15/00
CPCB21L9/04B21L9/06B23P15/00C21D1/20C23C8/30
Inventor 翁建良吴建明蔡丽娟钱江
Owner 湖州求精汽车链传动有限公司
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