Method for detecting alignment error of herringbone gear

Abstract

The invention discloses a method for detecting an alignment error of a herringbone gear. The method comprises the following steps: determining a mid-plane of the herringbone gear to be detected; establishing a coordinate system, wherein the original point of the coordinate system is a crossing point of a reference axis and the mid plane, Z axis is in line with the reference axis, Y axis and X axis are in the mid plane, and every two of the X axis, the Y axis and the Z axis are vertical; measuring two points on left and right handed corresponding flanks of the herringbone gear to ensure that values of Y coordinates of the two points are equal, Z coordinates of the two points have the same value but opposite directions, the difference delta X of the coordinate values of the two points in X direction is resolved, the alignment error delta Z of the herringbone gear in the axial direction can be resolved through the formula that delta Z equals to delta X / 2tg beta, wherein beta is an axial spiral angle. By measuring the alignment error delta X of the herringbone gear in the tangential direction, the alignment error delta Z can be indirectly acquired through the formula, and the alignment error delta Z which is difficult to measure can be avoided, and effective measurement to the alignment error can be realized.

Description

technical field [0001] The invention relates to the technical field of centering errors of herringbone gears, and more specifically, to a method for detecting centering errors of herringbone gears. Background technique [0002] The herringbone gear transmission has the advantages of high load capacity and good working stability, and is widely used in the rear transmission of ships. High-precision herringbone gears have strict requirements on the centering error of the intersection point of the herringbone line. Before this, without this detection technology, the error could not be tested, making it difficult to judge whether the centering error of the herringbone line is qualified. . At present, there are mainly two methods for processing herringbone gears: one is to process one direction of rotation first for those with undercuts, and then process the other direction of rotation by scribing and positioning; The two gears are processed separately, and then assembled into a...

AI Technical Summary

Problems solved by technology

In the former processing method, the centering error of the herringbone tooth line is mainly controlled by the scribing and tool setting. Since the scribing and hobbing tool setting errors are relatively large, in addition to the subsequent carburizing and quenching of the tooth surface and the finishing of the reference end surface And the superposition of errors such as grinding and processing makes it difficult to control the centering error of the herringbone tooth line; the latter processing method must go through detection means to ensure that the centering error of the combined herringbone tooth line meets the requirements

Gear grinding is the last process, and the margin is relatively small. If the alignment of the herringbone tooth line is not good, it is difficult to meet the alignment requirements by grinding the gear

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