强力切削数控摆角铣头高精度装配与动力学控制技术研究

项目名称： 强力切削数控摆角铣头高精度装配与动力学控制技术研究

项目编号： No.51505356

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： 赵鹏兵

作者单位： 西安电子科技大学

项目金额： 20万元

中文摘要： 本课题以面向难加工材料复杂整体结构件加工的强力切削数控摆角铣头为研究对象，针对其结构复杂，装配难度大，刚度不易保证且驱动及控制困难等问题，对其装配精度精量化设计、非线性动力学分析及性能调控等问题进行理论推导、仿真分析和实验验证。提出摆角铣头装配精度的定量表征方法，揭示装配精度的形成与衰退机理，建立“几何尺寸→装配精度→工作性能”之间的映射关系；在保证装配精度的前提下，揭示系统动力学特性与结构参数的关联关系以及载荷、工况、服役环境和动力学参数的匹配机理，研究非线性环节和不确定性因素对动力学性能的影响规律；在此基础上，建立驱动与传动系统的动力学模型并提出相应的控制策略，最终，建立摆角铣头驱动、传动和控制的集成优化方法。本课题研究可为强力切削数控摆角铣头的高精度装配及动力学控制提供理论指导，提出的理论和方法也可以应用到其它复杂精密机电系统的科学研究和工程实验中。

中文关键词： 摆角铣头；装配精度；参数匹配；动力学控制；集成优化

英文摘要： This project takes the powerful CNC rotary milling head as the research object, which is used in machining the complicated and integrated structural parts made by hard and difficult to process materials. Taking its complex structure, difficult assembly, difficult to ensure the stiffness, and difficult to drive and control into consideration, fine quantization design of the assembly precision, nonlinear dynamics analysis and performance regulation are studied by theoretical derivation, simulation analysis and experimental verification. Quantitative characterization method of assembly precision for the rotary milling head is proposed, formation and recession mechanisms of the assembly precision are revealed, and mapping relationship among geometric dimensions, assembly precision and working performance are established. Under the premise of ensuring assembly precision, relationship between system dynamics and structure parameters is revealed, and matching mechanism between external loads, operating conditions, service environment and dynamics parameters is also brought to light, and influence laws of nonlinear links and uncertain factors on the dynamic performance are studied. On this basis, dynamics models of the drive and transmission systems are established and the corresponding control strategies are proposed. Finally, integrated optimization method of the drive, transmission and control is established. This project research can provide theoretical guidance for high-precision assembly and dynamics control of the powerful CNC rotary milling head, and the proposed theories and methods can be applied in scientific research and engineering experiments of other complex and sophisticated electromechanical systems.

英文关键词： Rotary milling head;Assembly precision;Parameters matching;Dynamics control;Integrated optimization