Manufacturing method of miniature shaft

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 ...

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.