Gear hobbing machining tool and gear hobbing machining method

Abstract

The invention discloses a vehicle part machining technology. The gear hobbing machining tool, comprises a base and an expansion sleeve which is matched with the base, wherein the expansion sleeve is used for sleeving a column body of the base, the base comprises a section of expansion sleeve mounting column which is correspondingly designed with the expansion sleeve; the contact surfaces of the expansion sleeve mounting column and the expansion sleeve are conical surfaces cooperating with each other, a plurality of expansion holes are formed in the expansion sleeve, and the outer ring surfaceof the expansion sleeve is a gear tooth mounting surface corresponding to a machined product. The expansion sleeve used in the gear hobbing machining tool is in direct contact with the machined product, so that the product cannot be directly worn on a base column body in a machining process, the expansion sleeve can be directly replaced after being worn, the whole base does not need to be scrapped, so that the cost is saved, and the machining precision is guaranteed; the desigh of the expansion holes of the expansion sleeve provides a certain counter force and buffering force, and is suitablefor installation and machining of the machined product, so that use requirements and the machining precision are better met.

Description

technical field [0001] The invention relates to a processing technology for vehicle parts, in particular to a hobbing tooling and a gear hobbing method. Background technique [0002] Gear hobbing is a common transmission part for motorcycles, automobiles, etc. As the most common transmission and wear parts, hobbing gears are used in a huge amount, so how to process high-quality hobbing gears efficiently is more important. [0003] Such as figure 1 with figure 2 As shown, the existing gear hobbing tooling includes a columnar base 1, and a hobbing installation platform 2 is arranged on the upper part of the base 1. The hobbing installation platform 2 is connected with a hobbing limit column 3, and It is connected with a lock stud 4 for installing a lock nut. After the product 5 to be processed is installed on the hobbing installation table 2, the top is covered tightly with a gland 6 and the entire installation structure is locked with a lock nut 7. It is used to perform g...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the hobbing limit column of the existing gear hobbing tooling is in direct contact with the product to be processed, which causes wear and affects the machining accuracy, and when the amount of wear exceeds the allowable error, the tooling can only be scrapped and the use cost is high , providing a gear hobbing tool and a gear hobbing method. The gear hobbing tool uses an expansion sleeve to directly contact the processed product. During processing, the product will not directly cause wear to the base cylinder, and the expansion sleeve can be replaced directly after wear. , there is no need to scrap the entire base, saving costs and ensuring processing accuracy. The expansion hole design of the expansion sleeve provides a certain reaction force and buffer force, which is suitable for the installation and processing of processed products, and better meets the use requirements and processing accuracy.

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