中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2014年
9期
1169-1174
,共6页
几何误差%球杆仪%灵敏度分析%旋转轴
幾何誤差%毬桿儀%靈敏度分析%鏇轉軸
궤하오차%구간의%령민도분석%선전축
根据齐次变换理论推导出旋转轴基本几何误差辨识模型，在此基础上，提出了一种基于球杆仪的旋转轴基本几何误差快速测量和辨识新方法，将球杆仪一端的中心座分别安装在旋转工作台的3个不同位置，通过联动控制球杆仪另一端球心按圆形轨迹运动，分别测量旋转轴圆周每个离散位置点在X、Y、Z方向上的偏差，并根据所建立的辨识模型，辨识出旋转轴的6项基本几何误差。同时，提出了基于系数矩阵灵敏度分析的方法，用于指导测量点的合理分布，减少测量误差的影响，从而提高误差辨识精度。
根據齊次變換理論推導齣鏇轉軸基本幾何誤差辨識模型，在此基礎上，提齣瞭一種基于毬桿儀的鏇轉軸基本幾何誤差快速測量和辨識新方法，將毬桿儀一耑的中心座分彆安裝在鏇轉工作檯的3箇不同位置，通過聯動控製毬桿儀另一耑毬心按圓形軌跡運動，分彆測量鏇轉軸圓週每箇離散位置點在X、Y、Z方嚮上的偏差，併根據所建立的辨識模型，辨識齣鏇轉軸的6項基本幾何誤差。同時，提齣瞭基于繫數矩陣靈敏度分析的方法，用于指導測量點的閤理分佈，減少測量誤差的影響，從而提高誤差辨識精度。
근거제차변환이론추도출선전축기본궤하오차변식모형，재차기출상，제출료일충기우구간의적선전축기본궤하오차쾌속측량화변식신방법，장구간의일단적중심좌분별안장재선전공작태적3개불동위치，통과련동공제구간의령일단구심안원형궤적운동，분별측량선전축원주매개리산위치점재X、Y、Z방향상적편차，병근거소건립적변식모형，변식출선전축적6항기본궤하오차。동시，제출료기우계수구진령민도분석적방법，용우지도측량점적합리분포，감소측량오차적영향，종이제고오차변식정도。
An identification model of rotation axis basic geometric errors was derived based on the theory of homogeneous transformation,and then a new fast measurement method and identification of rotation axis basic geometric errors based on ball-bar were proposed herein.The measurement of ball-bar was adopted by one end of the ball-bar was fixed on the rotary table in three different positions re-spectively.By the linkage control the other end of the ball-bar in circular traj ectory,the deviations of each position measurement point in the directions of X,Y and Z could be measured in each discrete po-sition.And then the rotation axis six basic geometric errors could be identified according to the estab-lished identification model.As to guide the distribution of the measuring points and reduce the influ-ence of measurement error,a method based on sensitivity analysis of the coefficient matrix was presen-ted and the accuracy of error identification is improved.
