行星滚柱丝杠副动刚度与传动精度耦合机理研究

项目名称： 行星滚柱丝杠副动刚度与传动精度耦合机理研究

项目编号： No.51505381

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 机械、仪表工业

项目作者： 马尚君

作者单位： 西北工业大学

项目金额： 22万元

中文摘要： 本项目以提高行星滚柱丝杠副（PRSM）动刚度和传动精度为目标，围绕误差产生机理、滑滚比-误差-间隙非线性相互作用机制、动刚度和传动精度耦合机理及滑滚比、误差、间隙对动刚度和传动精度的影响规律等科学问题，开展理论与试验研究。首先，阐明PRSM传动误差和回程误差产生机理，研究滑滚比、误差和间隙计算方法，揭示滑滚比-误差-间隙非线性相互作用机制。其次，基于分离参数方法构建PRSM动刚度计算模型，建立计及动态接触变形、误差和间隙影响的PRSM传动精度计算模型。在探明动刚度和传动精度耦合机理的基础上，研究滑滚比、误差和间隙非线性对PRSM动刚度和传动精度的影响规律，并进一步探究螺纹牙型、结构参数以及不同运行工况对动刚度和传动精度的影响规律。最后，开展PRSM动刚度和传动精度试验，验证所建模型的正确性和有效性。本项目研究成果可为设计并研制出高动刚度和传动精度的PRSM奠定理论基础。

中文关键词： 精密传动；传动精度；动态特性；丝杠传动

英文摘要： Aiming at enhancing dynamic stiffness and transmission accuracy of planetary roller screw (PRSM), the theoretical studies of PRSM will be performed, in which the errors mechanism, the mutual action mechanism among slide-roll ratios, errors and clearences, coupling mechanism of dynamic stiffness and transmission accurancy and the influences of slide-roll ratios, errors and clearences on dynamic stiffness and transmission accuracy will be taken into consideration. Firstly, the mechanisms of transmission errors and retracement errors will be illustrated and the computational methods of slide-roll ratios, errors and clearences will be studied. The mutual action mechanism among slide-roll ratios, errors and clearences will be further exposured. Secondly, the models of dynamic stiffness based on the method of distributed parameter and the transmission efficiency considering dynamic contact deformation, errors and clearences will be developed. Based on the coupling mechanism of dynamic stiffness and transmission accurancy,the relationships of slide-roll ratios, errors and clearences on dynamic stiffness and transmission accuracy of the PRSM, and the influences of thread tooth form, structure parameters of thread and different operating conditions on dynamic stiffness and transmission accuracy of the PRSM will be analyzed. Finally, experimental studies on the dynamic stiffness and transmission accuracy will be carried out on the experimental equipment to testify the validity of proposal numerical models. The achievements of this project will provide theoretical basis to design and manufacture of PRSM with higher dynamic characteristics and higher transmission accuracy.

英文关键词： Precision transmission;Transmission accurancy; Dynamic characteristics;Screw transmission