Novel hobbing fixture for shaft gear with internal spline

Abstract

The invention provides a novel hobbing fixture for a shaft gear with an internal spline. The hobbing fixture comprises a base and a positioning rod integrally formed with the base; the end, far away from the base, of the positioning rod is provided with a first thread, a first positioning sleeve is connected to the step portion formed between the base and the positioning rod, a second positioning sleeve symmetrical to the first positioning sleeve is arranged in the mode of penetrating through the positioning rod, and a positioning nut is connected to the base in a threaded mode and is in threaded fit with the outer wall of the first positioning sleeve. The novel hobbing fixture for the shaft gear with the internal spline is a fixture designed for hobbing of the gear with the internal spline, spline connection pitch cercle meshing is steady when the fixture is in a using state, the condition that eccentricity is generated when hobbing is conducted is prevented, the problems such as noise and early failure of a bearing are effectively avoided, and the qualification rate is increased.

Description

technical field [0001] The invention belongs to the field of gear processing, and in particular relates to a novel gear hobbing fixture with an inner spline shaft. Background technique [0002] The existing gear with internal spline shaft is hobbed on the basis of the spline bottom hole. Disadvantages: 1. After the internal spline is processed, the consistency of the bottom hole is poor. Using ordinary hobbing tooling to process the product based on the bottom hole will cause the gear ring to jump too much, resulting in a lower pass rate; 2. Spline connection When in use, the meshing force of the pitch circle is generally applied, and the coaxiality between the bottom hole and the pitch circle is difficult to guarantee. The gear processed using the bottom hole as a reference has a large eccentricity under actual working conditions, which will cause noise and premature bearing. In view of the problems such as failure, in view of this situation, the present invention proposes...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a new type of gear hobbing fixture with internal spline shaft, which is aimed at the special tooling for gear hobbing of gears with internal splines, to prevent eccentricity during gear hobbing, and the purpose is to ensure the beating of the gear ring, Improve the qualified rate, ensure the smooth meshing of the spline connection pitch circle in the use state, and effectively avoid problems such as noise and early failure of the bearing

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