五轴数控仿真刀具运动分析及应用

Analysis and Application of the Tool Motion in Five-axis NC Simulation

在五轴数控仿真过程中需要经过一系列的复杂的运动学变换,得到仿真过程中的刀具运动过程。而在刀路轨迹的生成过程以及刀具的运动过程中,由于曲面曲率过大或者步长过大以及旋转的影响,加工过程会出现较大的误差,需要对误差进行分析与控制,得到质量较高的加工曲面。本文通过分析机床运动学的变化,给出了机床运动变化过程以及刀具运动的过程,并针对加工过程产生的误差提出了误差分析和改进措施,最后给出了仿真实例。

In the process of Five-axis CNC Simulation,in order to obtain the tool movement path,we need a series of complex kinematic transformation.However,in the generation process of tool path and the tool movement process,owing to the large surface curvature or step length and the impaction of rotation,it is possible that the larger error may emerge in the machining process.Therefore,by analyzing and controlling the error,the machining curved surface which has high quality can be obtained.The paper analyses the transformation of Machine Tool Kinematics,and then gives the changes of machine movement and the tool movement.At the same time,the way of error analyzing and improved measures on the basis of generated error in the machining process were proposed.Finally,the simulation example was given.