齿轮啮合弹性变形对齿轮基节的影响

The Impact on the base pitch from the elastic deformation of meshing gears

针对渐开线直齿圆柱齿轮啮合时的弹性变形,采用了材料力学中的悬臂梁模型和赫兹接触应力理论的计算方法对齿轮啮合后在单位力作用下的轮齿的弯曲变形量与接触变形量进行了计算,并找出了该变形量与基节的关系。最后用有限元方法对轮齿的弯曲变形与接触变形及其对基节的影响进行了有效的验证。

It concerns the elastic deformation when involute spur gear meshes.It uses the cantilever model used in mechanics of materials and the Hertz contact stress theory in order that the tooth bending deformation and contact deformation which the engaged gear acted on by the unit force brings are calculated.And it find the relationship between the deformation and the base pitch.At last,the finite element method is used to verified effectively the tooth bending and contact deformation and the impact on the base pitch from the deformation.