【作者】 李斌； 毛新勇； 师汉民； 刘红奇； 李曦；

【机构】 华中科技大学国家数控系统工程技术研究中心；

【摘要】 本文提出一种测量3轴数控机床工作空间误差误差检具——三维步距规,该三维步距规由三棱锥阵列和组合测头组成。锥体阵列中每个锥体侧面只需组合测头测量一点,锥体中心坐标即可确定,所以分布的锥体阵列可作为长度标准用于对数控机床工作空间误差进行测量。同时针对锥体阵列中锥体间的布置和结构参数差异,给出了锥体的布置和结构参数修正,并对三维步距规在标定和测量过程间的重复安装误差进行了测量补偿。对三维步距规装置的数控机床误差测量试验结果表明,三维步距规装置安装快捷,测量简单,准确度高。更多还原

【Abstract】 A new instrument,named 3D Step Gauge,was developed for directly measuring the volumetric errors of 3-axis machine tool. The 3D Step Gauge was composed of a triangular pyramid array and three LVDTs.The center coordinates of the pyramids can be got by measuring one point of each face at the same time. Furthermore,the repeated fix errors was measured and compensated,and the positions and structure fix parameters of the pyramids were given,according to the position and the diversities of the structure. The developed device has been tested using an actual machine tool,which shows high accuracy,simplicity of setup and quick measurement.更多还原