文档介绍：数控机床误差补偿技术研究*
刘又午刘丽冰赵小松章青王树新
刘又午教授
摘要:提出基于多体系统理论的数控机床运动误差模型、几何误差参数综合辨识模型及相应测量技术,使用9线位移误差及直线度误差测量,可准确辨识数控机床整个工作区间内的全部21项几何误差参数;在三坐标立式加工中心上进行软件误差补偿实验,并上坐标测量机检验。结果表明,建模方法具有较强的实用性,对数控机床加工误差补偿效果明显。
关键词:数控机床多体系统理论误差参数综合辨识误差补偿
中国图书资料分类法分类号:TG659 TP202
Investigation of pensation Technology for NC Machine Tool
Liu Youwu(Tianjin University,Tianjin,China) Liu Libing Zhao Xiaosong Zhang Qing Wang Shuxin p 48-51
Abstract:Based on the theory of multibody system,the model of kinematic error,the model of geometrical error parameter identification and measuring technique were measurements of errors of displacement and linearization of 3 lines along 3 coortinates respectively,21 geometrical error parameters of NC machine tool were exactly error pensation experiment was done in MAKINO vertical machining center,and the parameters were verified in results show that the modeling method is as generalized,pensation is powerful,efficient and user-friendly and the pensation results are apparent.
Key words:NC machine tool theory of multibody system synthetical identification of error parameters pensation technology
近年来,提高数控机床精度的研究倍受重视[1]。通常尺寸精度是决定数控机床加工精度的最重要因素,而数控机床的几何精度是影响尺寸精度的直接原因
[2,3]。提高机床精度有误差避免和误差补偿两种基本方法。计算机技术和测量技术的发展,为软件误差补偿技术的发展应用提供了更为广阔的前景[4]。
相比坐标测量机,数控机床误差补偿技术研究进展缓慢,还处于探索阶段。
数控机床软件误差补偿技术研究内容有通用的数控机床误差模型建模研究、误差参数测量和辨识方法研究,以及误差补