摘要
在五轴数控机床加工中,由于旋转运动的影响,机床各轴线性插补的合成运动会使实际刀位运动偏离编程直线,造成编程直线和机床实际运动轨迹之间产生了误差,该误差被称为非线性误差。在对摆头转台五轴数控机床运动求解进行研究的基础上,基于机床的运动求解模型,分析了五坐标加工中的非线性误差的数学模型,提出了一种RTCP功能的插补算法,并通过MATLAB实例仿真验证该RTCP算法可以有效减小非线性误差,显著提高加工精度。
Because of the influence of the rotary kinematics, the movement of rotary axis brings to non-linear error in five-axis NC machine tool processing which the trajectory of actual interpolation movement of machine tool deviated from the programming line. Base on kinematics model of five-axis NC machine tool with table-rotary, Mathematical model of non-linear error was analyzed in five-axis processing and the interpolate algorithm of RTCP function was presented. The effectiveness of RTCP algorithm was proved by MATLAB simulation and the machining accuracy was significantly improved.
出处
《组合机床与自动化加工技术》
北大核心
2016年第5期39-42,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
广西教育厅项目:国产双摆头五轴联动机床后置处理软件的开发(0314101401)
