机械制造与自动化
機械製造與自動化
궤계제조여자동화
JIANGSU MACHINE BUILDING & AUTOMATION
2015年
4期
38-41
,共4页
数控机床%摆动轴%几何误差%球杆仪
數控機床%襬動軸%幾何誤差%毬桿儀
수공궤상%파동축%궤하오차%구간의
numerical controlmachine%trunnion axis%geometric errors%double bal bar
提出一种基于球杆仪的摆动轴几何误差测量和辨识的新方法。通过圆弧测量轨迹测量球杆仪球心在回转工作台上3个安装位置的球心偏差，并利用齐次坐标变换理论建立其几何误差的辨识模型，分两步从球杆仪测量结果中辨识出4项轴线位置误差和6项运动误差。在转摆台式五轴数控机床上采用球杆仪进行实验验证，通过比较误差补偿前后球杆仪的测量值来验证辨识方法的有效性。
提齣一種基于毬桿儀的襬動軸幾何誤差測量和辨識的新方法。通過圓弧測量軌跡測量毬桿儀毬心在迴轉工作檯上3箇安裝位置的毬心偏差，併利用齊次坐標變換理論建立其幾何誤差的辨識模型，分兩步從毬桿儀測量結果中辨識齣4項軸線位置誤差和6項運動誤差。在轉襬檯式五軸數控機床上採用毬桿儀進行實驗驗證，通過比較誤差補償前後毬桿儀的測量值來驗證辨識方法的有效性。
제출일충기우구간의적파동축궤하오차측량화변식적신방법。통과원호측량궤적측량구간의구심재회전공작태상3개안장위치적구심편차，병이용제차좌표변환이론건립기궤하오차적변식모형，분량보종구간의측량결과중변식출4항축선위치오차화6항운동오차。재전파태식오축수공궤상상채용구간의진행실험험증，통과비교오차보상전후구간의적측량치래험증변식방법적유효성。
A new method is proposed in this paper, that the double bal bar is used as the measuring instrument to measure and i-dentify the geometric error of a trunnion-type A-axis. The derivations of the center of the bal are measured on 3 instal ation sife of the rotation table by double bal bar with circular paths in the error sensitive directions and an homogenous transform matrices is used to build the identification model. Four linkage errors and six volumetric errors are obtained by a two-step identification procedure. Final-ly, the validity of proposed method is validated by practical tests on the five-axis machine center.
