接触轮变形对机器人砂带磨削深度的影响

发布时间：2018-04-27 23:04

本文选题：砂带磨削 + 接触轮　；参考：《机械工程学报》2017年05期

【摘要】：机器人磨削系统能够替代低效和高污染的手工曲面打磨作业,降低生产准备时间和设备成本,特别适用于小批量曲面零件的磨削加工。接触轮为橡胶等柔性材质,工件与工具之间存在弹性接触,有利于提高工件表面质量,但接触轮易变形,导致实际磨削量不易控制。研究砂带张紧对接触轮变形和磨削深度的影响,采用弹性力学平面问题的复变函数解法,建立模型并求解得到了接触轮的变形分布规律,与商用有限元软件的结果进行对比,验证了解析模型的正确性。建立改进的磨削深度预测模型,得到了接触区域内的磨削深度分布,试验验证了模型预测误差小于3.1%。该方法可以更为准确快速地预测机器人砂带磨削深度,为提高复杂曲面磨削精度提供了理论指导。
[Abstract]:The robot grinding system can replace the low efficiency and high pollution manual surface grinding operation and reduce the production preparation time and equipment cost. It is especially suitable for the grinding of small batch curved surface parts. The contact wheel is a flexible material such as rubber, and there is elastic contact between the workpiece and the tool, which is helpful to improve the surface quality of the workpiece, but the contact wheel is easy to deform, resulting in the difficult to control the actual grinding quantity. The influence of belt tension on contact wheel deformation and grinding depth is studied. By using the complex variable function method of elastic plane problem, the model is established and the deformation distribution law of contact wheel is obtained, which is compared with the results of commercial finite element software. The correctness of the analytical model is verified. The improved grinding depth prediction model is established and the grinding depth distribution in the contact area is obtained. The experimental results show that the prediction error of the model is less than 3.1. This method can predict the grinding depth of robot belt more accurately and quickly, and provide theoretical guidance for improving the grinding accuracy of complex surface.
【作者单位】：北京航空航天大学机械工程及自动化学院;
【基金】：国家自然科学基金(51305008) 教育部博士点基金(20121102120020)资助项目
【分类号】：TG580.6

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