Processing method of high-accuracy herringbone gear without withdrawing groove hard tooth surface

Abstract

A process method of high accuracy zig-zag gear with solid gear surface and no tool escape is provided, which produces finished left rotating single inclining gear product by the traditional technics, then finish the following procedures: firstly, process right rotating single inclining gear by the traditional technics, the two end surfaces are provided with abrasion margin L1 and L2; secondly, insert into the key groove of the left rotating single inclining gear and the right rotating single inclining gear by key to combine the two parts, and ensures the alignment of the key groove of the two gears; thirdly, measure out the existing error which make the gear blade of the two gears centered; sixthly, abrase the middle end surface of the right rotating single inclining gear off error value L1, to achieve the gear blade of the two gears centered; fifthly, abrase the other end surface of the right rotating single inkling gear suitable value L2, to reach the requirement of design size. The invention can realize the process of zig-zag gear without tool escape, the processed gear has small volume; the invention can not only overcome the error of two gears being centered during process, but also have simple process.

Description

technical field [0001] The invention belongs to the technical field of gear processing, and in particular relates to a processing method of a high-precision herringbone gear with a hard tooth surface without undercut. Background technique [0002] The gear transmission of the rolling mill gearbox in the large-scale metallurgical project adopts the herringbone gear transmission. Since the gearbox is subjected to a large impact force when rolling the steel plate, and in order to ensure the uniform thickness of the rolled steel plate, the herringbone gear The gear design accuracy is generally required to be above grade 5 specified in GB10095, and the tooth surface is required to be carburized and quenched. In order to ensure the contact accuracy of the gears, the herringbone gear alignment requires an error of less than 0.5. It can be seen that to meet the above requirements, grinding must be carried out. The usual herringbone gear has an integrated structure. In order to avoi...

AI Technical Summary

Problems solved by technology

For the herringbone gear in the rolling mill gearbox, due to the limitation of the gearbox structure, there is no undercut in the design, but it is designed as two single helical gears combined with a herringbone gear. Therefore, it is impossible to combine two The teeth of the single helical gears are ground after combination, which can only be combined after processing separately, but it will be difficult to align the two gears to meet the specified requirements due to the errors in the processing.

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