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直径5m掘进机大内齿轮的外径为3.38m,转速5r/min,传递力矩100tf-m,是典型的低速重载齿轮。过去数年内发生过多次断齿事故,造成重大损失。设计者采取许多措施以增强轮齿抗弯强度,分散齿根应力集中,借以提高齿轮寿命。本文介绍的合理设计轮齿齿沟过渡曲线圆角即为主要的技术措施之一。所谓合理设计齿沟过渡曲线圆角是指在齿沟宽度所容许的最大过渡曲线圆角半径计算值,和齿沟过渡曲线不发生啮合干涉的最大圆角半径计算值之间,取用其较小者作为
The diameter of 5m boring machine internal gear is 3.38m, speed 5r / min, transmission torque 100tf-m, is a typical low-speed heavy-duty gear. In the past few years there have been many broken tooth accidents, resulting in heavy losses. Designers take many measures to enhance the flexural strength of teeth, tooth root stress concentration, in order to improve gear life. This paper describes the reasonable design of gear tooth groove curve transition curve is one of the major technical measures. The so-called reasonable design tooth groove transition curve fillet refers to the width of the tooth width of the maximum allowable transition curve fillet radius calculated value, and the tooth groove transition curve meshing interference does not occur between the maximum fillet radius calculated, take it more Small as