Sintering brazing gear shifting fixing block and manufacturing method thereof

Abstract

The invention provides a sintering brazing gear shifting fixing block and a manufacturing method thereof. The manufacturing method is characterized in that the gear shifting fixing block is divided into two products, namely, a guide pipe and a base, wherein the guide pipe is provided with a through hole in which a positioning step is arranged; a brazing flux groove is formed in the guide pipe; thebase is correspondingly provided with a bump, so that a brazing flux is conveniently accurately filled; the positioning step arranged in the through hole facilitates measuring and positioning in later mechanical processing; the gear shifting fixing block is divided into the guide pipe and the base; the guide pipe and the base are correspondingly formed by powder metallurgy and then are connectedby sintering brazing. Compared with a traditional method of mechanically processing forming after powder metallurgy, the manufacturing method has the advantages that the brazing technology is simple;a plurality of mechanical processing processes in the traditional method are saved; the convenience of manufacturing is ensured; in addition, most of inner holes and outer grooves are integrally formed during manufacturing of the guide pipe and the base, and cutting is avoided, so that the wastes produced by cutting are decreased, and as a result, the production cost is decreased.

Description

technical field [0001] The invention relates to the field of automobile transmissions, in particular to a sintered brazing shift fixed block and a manufacturing method thereof. Background technique [0002] With the development of science and technology, people's pursuit of quality of life is getting higher and higher. Cars have become an indispensable travel tool in people's daily life, and people's requirements for car safety are getting higher and higher. In the mechanical shifting mechanism, the push rod realizes the shifting function under the guidance of the shifting fixed block. The gear shift fixed block is currently formed by integral powder metallurgy, and then completed with a large amount of machining. Powder metallurgy cannot directly form horizontal holes, horizontal hole slope positioning steps, and outer circular grooves, so the amount of mechanical processing required It is relatively large, and the machining includes: 1 drilling, 2 fast wire cutting, 3 fas...

AI Technical Summary

Problems solved by technology

The gear shift fixed block is currently formed by integral powder metallurgy, and then completed with a large amount of machining. Powder metallurgy cannot directly form horizontal holes, horizontal hole slope positioning steps, and outer circular grooves, so the amount of mechanical processing required It is relatively large, and the machining includes: 1 drilling, 2 fast wire cutting, 3 fast wire cutting shape and groove, 4 machining center bevel milling, milling groove cutter, chamfering, 5 machining center positioning step milling, 6 milling sinking The six steps of the head hole are completed, which causes problems such as large material waste, long processing cycle, and excessive processing cost.

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