Purpose

The purpose of this paper is to establish a transient contact position prediction method of gears at the meshing point based on the equivalent contact model.

Design/methodology/approach

In this method, the contacting surface profiles are constantly updated by changing the pressure angle and the chord tooth thickness, which has a direct connection with the equivalent base circle radius. According to the equivalent base circle radius, the equivalent pressure angle at the pitch circle and equivalent pitch point can be calculated. The equivalent contacting surface profile is determined by the equivalent pressure angle at the pitch circle; for each meshing point, there is one equivalent pressure angle at the pitch circle. Therefore, each meshing point can be regarded as a point on the equivalent contacting surface profile.

Findings

The model is applicable to find out the contact position after a series of meshing cycles through the law of pressure angle change and intentionally kept as simple as possible with the aim to be used in further study of gear flanks at the point of the actual contact.

Practical implications

The results of the experiment are applied to the equivalent contact model to describe the transient contact position and assess the model accuracy.

Originality/value

The determination of the contact position of the worn tooth profile provides the action points of the force for the study of the contact fatigue.

中文翻译：

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干运转条件下磨牙轮廓的瞬态接触位置预测方法

目的

本文的目的是建立基于等效接触模型的齿轮在啮合点的瞬时接触位置预测方法。

设计/方法/方法

在这种方法中，通过改变压力角和弦齿厚度来不断更新接触表面轮廓，该角与等效基圆半径直接相关。根据等效基圆半径，可以计算出螺距圆和等效螺距点的等效压力角。当量接触表面轮廓由节圆上的当量压力角决定。对于每个啮合点，在节圆处都有一个等效的压力角。因此，每个啮合点都可以视为等效接触表面轮廓上的一个点。

发现

该模型适用于在一系列啮合循环后通过压力角变化定律找出接触位置，并有意保持尽可能简单，目的是在实际接触点进一步研究齿轮齿侧。

实际影响

将实验结果应用于等效接触模型，以描述瞬态接触位置并评估模型的准确性。

创意/价值

磨损的齿形的接触位置的确定为研究接触疲劳提供了作用力的作用点。