RTCP(Rotation tool center point)功能作为目前高档数控机床必备的功能之一,可以大幅减小由于旋转轴运动带来的非线性误差,有效提高机床加工精度。根据刀具刀尖点相对于加工工件相对静止的特点,设定刀具刀尖点不动,规划了有利于研究机床伺服系统动态性能的RTCP轨迹,并进行伺服系统仿真研究,得到刀尖点误差轨迹与机床伺服系统动态性能影响因素的对应关系,并依据此对应关系提出动态误差溯源方法,为数控机床伺服系统参数调整提供理论支持。
姜忠
,
丁杰雄
,
王伟
,
邓梦
,
杜丽
,
宋智勇
. 基于RTCP功能的五轴数控机床动态误差溯源方法[J]. 机械工程学报, 2016
, 52(7)
: 187
-195
.
DOI: 10.3901/JME.2016.07.187
RTCP(Rotation tool center point)is one of the necessary function for high-grade CNC machine tool, which can effectively decrease the nonlinear errors caused by the motion of rotation axis and improve the machinery accuracy. According to the characteristics that the cutting tool tip point is still relative to the manufacturing workpiece, the RTCP trajectory is proposed so as to conveniently measure displace of tool tip point. The scheme is in favour of studying the dynamic performance of the machine tool, and simulation which shows the relationship between the error trajectory of the tip point and the dynamic performance influencing factors of the machine tool is presented based on servo system model. Then the method on tracing the source of the dynamic error is suggested, and will perform the theoretical support for parameter adjustment of CNC machine tools.
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