非圆异面数字化高速最佳轨迹跟踪补偿加工的研究

项目名称： 非圆异面数字化高速最佳轨迹跟踪补偿加工的研究

项目编号： No.51475184

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 艾武

作者单位： 华中科技大学

项目金额： 81万元

中文摘要： 非圆异面零件是航空、船舶、汽车及机床等高端装备中的关键部件，其加工精度要求高，加工过程的理论和方法一直是研究的热点。本课题将以非等圆异面零件的高效、高精加工为目的，研究凸轮等非圆度较大的非圆异面零件的数字化车削加工机理，解决较大尺寸非圆异面零件的数字化车削加工中主轴的转速与刀具的径向进给之间的协调运动控制问题，特别是所车削的非圆截面零件的非圆度较大时，车削加工过程中的切削角和切削速度变化较大状态下寻求刀具的倾角和主轴转速保持最佳轨迹跟踪的理论和方法，并建立其相应的动力学数学模型。探讨凸轮廓形曲线方程的样条拟合及生成列表点的插值密化问题，提出相应有效的插补算法；在主轴变转速、直线电机往复进给系统中采用高性能的鲁棒伺服控制方法和技术，基于分级模糊递阶理论实现各个控制子系统之间有效的协调控制策略，实现一种基于直线电机和扇型电机直接驱动技术的大非圆度高速刀具进给结构的非圆异面类零件数字化加工系统。

中文关键词： 高速加工；运动控制；智能制造；复杂曲面；智能控制

英文摘要： Non circular ISO surface is a key part used in aviation, shipping, automobile, machine tool and other high-grade equipment and its processing require high accuracy, the theories and methods of machining process has been the focus of research. This proposal will take high efficient, high precision of non circular ISO surface machining for the purpose, research the digital machining mechanism of the non circle plane parts, as cam, with a large non-circular degree, solve the coordinated motion control problems between the spindle speed and the radial feed of the tool in digital machining. Especially when the non circularity of the work pieces with noncircular cross sections is larger, and turning angle and cutting speed change larger in the process, seek the theory and method of optimal tracking with the best matching of the inclination angle and the spindle speed of the tool and establishes the dynamic mathematical models, study the spline fitting of the cam profile curve equation and get a list of points about the interpolating densification problems and put forward the corresponding interpolation algorithm. The robust servo control method and technology of the high performance are used in the spindle with changed speed and the feed system with linear motor, the effective coordinated control strategy between each other control subsystems can be realized based on hierarchical fuzzy theory. A digital processing system of non circular ISO surface parts with non roundness of high speed feed structure can be realized based on the direct drive technology of the linear motor and fan motor.

英文关键词： high-speed turning;motion control;intelligent manufacturing;complex curved surface;intelligent control