Manufacturing method of miniature shaft

A manufacturing method and micro-shaft technology, which is applied in the field of micro-shaft manufacturing, can solve problems such as uneven end faces of products, achieve the effects of reducing waste products, easy grinding, and reducing production costs

Active Publication Date: 2013-05-15
乐清市求实微型轴有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems such as the uneven end surface of the product produced by the existing manufacturing method of the miniature shaft; Product surface hardness, wear resistance and corrosion resistance, etc.

Method used

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Examples

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Embodiment Construction

[0023] The invention is a manufacturing method of a miniature shaft, comprising the following steps:

[0024] (a) Cutting: Straighten the coiled wire of the raw material and cut it off according to the size required by the subsequent process. The raw material is generally a coiled stainless steel wire;

[0025] (b) Heat treatment: Put the truncated raw materials into the oven and pass through the oven at a speed of 200-800mm / min. The temperature of the oven is 900-1200°C to improve the surface hardness. The size of the blank is small. After cutting Afterwards, its internal structure and mechanical properties will change, and after heat treatment, the surface hardness of the blank can be effectively improved, and the mechanical properties of the blank can be improved;

[0026] (c) Cryogenic treatment: Put the heat-treated raw materials in a cryogenic box for 2 to 4 hours, and the temperature in the box is -150 to -200°C to improve the wear resistance, corrosion resistance and d...

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PUM

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Abstract

The invention relates to a manufacturing method of a miniature shaft. The manufacturing method of the miniature shaft includes the steps; blanking -> heat treatment -> copious cooling ->die filling -> grinding end face-> coarse grinding-> chamfer-> tempering ->accurate grinding-> grinding -> polishing-> detecting. The manufacturing method of the miniature shaft has the advantages that raw material wire coiling is directly cut off, the heat treatment and copious cooling are conducted, and mechanical performance of the miniature shaft can be greatly improved. A die and linear cutting are used to cut off raw materials to form blank and enable the blank to be arranged in a fixture on the end face grinding, so that the end face of the blank of the miniature shaft is smooth and easy to grind. Meanwhile, the manufacturing method of the miniature shaft can obviously improve production efficiency. By the coarse grinding and the accurate grinding, the outer diameter of the blank of the miniature shaft can be well controlled in production to reduce generating of waste and reduce production cost. A drum-type polishing machine is adopted and brown aluminum oxide is arranged in a drum so as to be capable of effectively removing polishing scratch and dirt when polishing treatment of the miniature shaft is conducted, and improve surface smoothness. Meanwhile, the manufacturing method of the miniature shaft can remove burr on the end face of the miniature shaft, and form the chamfer.

Description

technical field [0001] The invention relates to a production method of a rotating shaft, and more specifically relates to a production method of a miniature shaft. Background technique [0002] Due to the small size and high precision of the miniature shaft, it is also called a precision shaft. It is mainly used in products such as miniature vibration motors in mobile phones, massagers, printers, copiers, scanners or CD / VCD. The existing miniature shafts The manufacturing method is basically to punch the stainless steel wire through a punching machine to form a blank, and then perform heat treatment, cryogenic cooling, grinding and polishing. Because the end surface of the punching machine is not flat when punching the stainless steel wire, it affects the micro-shaft. For installation and use, for some products with low requirements, the existing technology can meet the use requirements; but for products with high size requirements (such as vibration motor shafts for mobile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 林小平
Owner 乐清市求实微型轴有限公司
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