剐齿加工几何位姿误差补偿系统的开发

Development of geometric location errors compensation system for power skiving

针对数控剐齿机床制造和装配过程中产生的几何误差,开发出自动生成几何位姿误差补偿代码的系统。首先,基于剐齿加工原理和齐次坐标变换理论建立机床运动传动链,得到剐齿加工成形函数。然后,通过实际逆向运动学误差补偿方法对成形函数进行求解。最后,分析软件所需功能模块,在Qt跨平台开发框架下进行人机界面设计,使用C++编程语言编写程序,开发剐齿加工几何位姿误差补偿系统。该系统可实现刀具参数计算、工件参数计算以及几何位姿误差补偿G代码的自动生成。通过VERICUT模拟加工,验证了该系统的正确性,结果表明补偿后齿轮精度得到了提升。本系统的开发为实现剐齿几何误差自动补偿提供了理论和实践基础。

For the geometric errors generated during the manufacturing and assembly of numerical control power skiving machine tool,a system for automatically generating geometric location error compensation code is developed.Firstly,based on the principles of gear power skiving and the homogeneous coordinate transformation to establish the kinematic chain of machine tool,and the skiving forming function is obtained.Then,the forming function is solved by the actual inverse kinematics error compensation method.Finally,functional modules of software were analyzed,using Qt cross-platform development framework to design interface,using C++write program,and developing an geometric location errors compensation system for power skiving.The system can realize the calculation of tool parameters,workpiece parameters and the automatic generation of G code for geometric location errors compensation.Through VERICUT simulation processing,the correctness of the system is verified.The results show that the gear accuracy after compensation is improved.The development of this system provides a theoretical and practical basis for realizing the automatic compensation of geometric errors.