基于綜合評價體系的五軸數(shù)控機床加工性能評價和誤差溯源方法
發(fā)布時間:2018-06-23 11:53
本文選題:五軸數(shù)控機床 + S形檢驗試件 ; 參考:《機械工程學報》2017年21期
【摘要】:五軸數(shù)控機床的加工性能在制造行業(yè)一直是研究的熱點,基于檢驗試件切削是常見的測評方法,然而試件和機床之間的映射關(guān)系難以確定,出現(xiàn)誤差后如何調(diào)整精度成為難點。為了科學對其評價,通過仿真平臺建立了機床控制系統(tǒng)參數(shù)與五軸機床檢驗試件——S試件加工誤差之間的映射關(guān)系,引入機床各軸分類評價的隸屬度,此基礎(chǔ)上開發(fā)了誤差溯源的綜合評價體系,由三坐標測量機得到的S件輪廓誤差數(shù)據(jù)反求出機床的加工性能等級和較差的軸類控制參數(shù),并制訂了基于S試件的機床加工精度測評規(guī)范,最后通過某五軸AB擺數(shù)控機床的切削試驗,驗證了方法的有效性。該成果有助于解決我國高端制造業(yè)長期缺乏機床性能測評的共性技術(shù)問題,具有重要的應用前景和經(jīng)濟價值。
[Abstract]:The machining performance of five-axis NC machine tool has been a hot topic in manufacturing industry. The test piece cutting is a common testing method based on inspection. However, the mapping relationship between the test piece and the machine tool is difficult to determine, and how to adjust the accuracy becomes difficult after errors occur. In order to evaluate the machine tool scientifically, the mapping relationship between the parameters of machine tool control system and the machining error of test piece S of five-axis machine tool is established through the simulation platform, and the membership degree of classification and evaluation of each axis of machine tool is introduced. On this basis, a comprehensive evaluation system of error traceability is developed. The machining performance grade and the poor shaft control parameters of the machine tool are obtained from the S part contour error data obtained from the coordinate measuring machine (CMM). The machining accuracy evaluation standard based on S specimen is established. Finally, the validity of the method is verified by the cutting test of a five-axis AB pendulum NC machine tool. This achievement is helpful to solve the common technical problem of the lack of machine tool performance evaluation in high-end manufacturing industry of our country for a long time, and has important application prospect and economic value.
【作者單位】: 電子科技大學機械電子工程學院;
【基金】:國家科技重大專項資助項目(2013ZX04001-021)
【分類號】:TG659
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