Analysis of Elastic Deformation for High Speed Ball Screw Based on the Finite Element Method
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摘要: 对于高速滚珠丝杠副,考虑螺旋升角的影响,建立了滚珠丝杠副的受力模型,利用有限元方法分析计算了螺旋升角对滚珠丝杠副弹性变形的影响.结果表明,随着螺旋升角的增大,滚珠丝杠副的法向弹性变形量变化不大,而轴向弹性变形量减少,更有利于提高定位精度.Abstract: The elastic deformation between the ball and groove affects the ball screw's performance, especially when the ball screw is used for precise transmission.However the effect of the helical angle is neglected in the simplified mechanics model of the ball screw.In this paper, a mechanics model of the ball screw is developed considering the factor of lead angle.And the effect of lead angle on the elastic deformation is analyzed.The result shows that the normal elastic deformation of ball screw decreases with the lead angle.The conclusion is significant for research and the development of new high speed ball screw.
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Keywords:
- ball screw /
- elastic deformation /
- finite element method
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