Involute spline spline tooth modification design method and processing method and gear product thereof

Abstract

The invention discloses a method for modifying the shape of an involute spline spline tooth. No modification processing is performed at the contact with the middle section of the key tooth; the length L of the middle section of the key tooth without modification processing is calculated according to the formula 2T10 for the bearing capacity of the involute spline 3 / LΨZHD≤[σp] calculated. This modification method directly improves the contact load distribution of the tooth surface, reduces the eccentric load, and avoids the wear failure caused by the increase of the unit area load; it ensures sufficient axial fit length of the key teeth, thereby ensuring the centering of the spline fit. Precision, greatly improving the quality of gear products. At the same time, a method for modifying the involute spline is disclosed. The processing method has high efficiency, does not generate chips, has high strength, and is simple, reliable and easy to implement.

Description

technical field [0001] The invention relates to the field of gear manufacturing, and more particularly, to an involute spline tooth modification design method and processing method and a gear product thereof. Background technique [0002] The involute spline is an important way for mechanical parts to cooperate and connect. The spline pair relies on the mutual contact of the tooth surfaces of the inner and outer spline teeth for centering, and at the same time bears the transmission torque or pressing force, and has automatic centering and bearing capacity. strong features. [0003] However, due to the tooth direction error and the coaxiality error of the installation during the manufacture of the spline pair, as well as the torsional deformation after being loaded, the load on each spline tooth along the axial direction is uneven, especially the edges and torsion at both ends. The influence of deformation is the greatest, resulting in eccentric load at both ends and poor c...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art when gear splines are processed, the tooth surfaces of the inner and outer splines contact with each other mainly at the highest point of the drum shape, and the contact area is greatly reduced, resulting in increased unit load and wear failure; and inner and outer splines The reduction of the axial fit length of the spline teeth leads to a decrease in the centering accuracy. The present invention provides a modification design method and processing method of the involute spline teeth, which improves the contact load distribution of the tooth surface and reduces the The eccentric load is avoided, and the wear failure caused by the increase of the load per unit area is avoided; the sufficient axial matching length of the key teeth is ensured, thereby ensuring the centering accuracy of the spline fit

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