Research on geometric error modelling and decoupling of machine tool based on NURBS projection curve

被引：3
|
作者：
Li, Wei [1 ]
Feng, Yanyan [1 ]
Zhang, Shihui [1 ]
Zuo, Wei [1 ]
机构：
[1] Tianjin Sino German Univ Appl Sci, Coll Mech Engn, Tianjin 300350, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2021年 / 117卷 / 9-10期
基金：
中国国家自然科学基金;
关键词：
Multiaxial machine tool; Geometric error; Error modelling; NURBS curve; Error decoupling; DOUBLE BALL BAR; ROTARY AXES; COMPENSATION; CALIBRATION; UNCERTAINTY;
D O I：
10.1007/s00170-021-07798-6
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
As a geometric measuring instrument of machine tool, double ball bar (DBB) instrument can effectively identify the geometric error of machine tool. In the existing literature, DBB mostly uses the two-dimensional circle as the identification trajectory to identify the geometric error continuously, and the most efficient way of single recognition is still in two-dimensional plane. Aiming at the low efficiency of DBB spatial geometric error recognition, the recognition range of DBB is extended from two-dimensional plane to spatial hemisphere. A method of space recognition and decoupling based on NURBS projection curve is proposed in this paper. The error decoupling of feed axis and rotation axis is realized in an experiment. The identification method has the characteristics of high efficiency, no secondary assembly and avoiding interference. It can decouple all the five-axis in hemispherical space at one time and get the effective solution.
引用
收藏
页码：2727 / 2740
页数：14
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