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基于散亂點(diǎn)云數(shù)據(jù)的五軸數(shù)控加工刀軌生成算法
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國(guó)家自然科學(xué)基金資助項(xiàng)目(51075247);山東省自然科學(xué)基金資助項(xiàng)目(ZR2010EM008)


Algorithm Generating Five-axis NC Tool-path for Unorganized Point Cloud
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    摘要:

    提出一種基于散亂點(diǎn)云數(shù)據(jù)的五軸數(shù)控加工刀軌生成算法,該算法根據(jù)點(diǎn)云數(shù)據(jù)的型面特征規(guī)劃驅(qū)動(dòng)刀軌,基于點(diǎn)云數(shù)據(jù)的動(dòng)態(tài)索引獲取瞬時(shí)加工區(qū)域,計(jì)算瞬時(shí)加工區(qū)域中數(shù)據(jù)點(diǎn)對(duì)應(yīng)刀位點(diǎn)集,選取刀軸正向最高點(diǎn)作為當(dāng)前刀位驅(qū)動(dòng)點(diǎn)對(duì)應(yīng)的無干涉刀位點(diǎn),檢測(cè)相鄰刀位點(diǎn)間的極限加工誤差并采用二分插值法控制刀軌精度,最終生成滿足精度要求的五軸數(shù)控加工刀軌,實(shí)例證明該算法刀具適用范圍廣,可對(duì)各種復(fù)雜型面的產(chǎn)品點(diǎn)云數(shù)據(jù)生成高質(zhì)量的五軸數(shù)控加工刀軌。

    Abstract:

    An useful generation algorithm of five-axis NC tool-path was proposed, which contained the following steps: first, the cutter-location driver points were marked out based on the shape of point cloud; second, the instantaneous process area was obtained based on the dynamic index of point cloud data; third, the corresponding cutter location point of each point in the instantaneous process area was obtained and then the cutter location point which has the highest position in the axis direction as the current cutter location point was selected; forth, the limit error was verified according to the adjacent cutter location points, and the precision of tool-path was controlled by the binary interpolation; ultimately, the NC tool-path was generated which met the accuracy requirements. Examples demonstrated that the algorithm can be used for many kinds of tools and can generate the high-quality five-axis NC tool-path for complex data model of unorganized point cloud.

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孫殿柱,崔傳輝,康新才,王超.基于散亂點(diǎn)云數(shù)據(jù)的五軸數(shù)控加工刀軌生成算法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(5):226-229,221. Sun Dianzhu, Cui Chuanhui, Kang Xincai, Wang Chao. Algorithm Generating Five-axis NC Tool-path for Unorganized Point Cloud[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(5):226-229,221.

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  • 在線發(fā)布日期: 2012-06-07
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