本文選題：環(huán)形刀 + 自由曲面　； 參考：《中國(guó)機(jī)械工程》2017年22期

【摘要】：針對(duì)環(huán)形刀五軸加工自由曲面的殘留誤差問(wèn)題,在傳統(tǒng)等殘留高度算法的基礎(chǔ)上,提出了一種基于定向距離理論的等最大殘留高度刀具軌跡規(guī)劃算法。首先根據(jù)微分幾何理論計(jì)算已知刀觸點(diǎn)的初始側(cè)向行距,并在側(cè)向行距方向進(jìn)行偏置得到相鄰刀觸點(diǎn);然后以基于定向距離理論的殘高誤差計(jì)算模型對(duì)相鄰刀觸點(diǎn)間的實(shí)際殘高值進(jìn)行計(jì)算;最后通過(guò)迭代計(jì)算規(guī)劃出等最大殘留高度的相鄰刀具軌跡。如此循環(huán),從而獲得整個(gè)曲面的刀具軌跡。實(shí)驗(yàn)結(jié)果表明,相對(duì)于商用軟件MasterCAM9.0,該算法在充分保證曲面加工質(zhì)量的同時(shí)最大限度地減小了刀具軌跡的總長(zhǎng)度,從而提高了加工效率。
[Abstract]:In order to solve the problem of residual error of free-form surface machined by five-axis annular cutter, a tool path planning algorithm with equal residual height based on directional distance theory is proposed on the basis of traditional algorithm of equal residual height. First, the initial lateral distance of the known cutter contact is calculated according to the differential geometry theory, and the adjacent cutter contact is obtained by bias in the lateral distance direction. Then the residual height error model based on the directional distance theory is used to calculate the actual residual height between the adjacent cutter contacts. Finally, the trajectory of the adjacent tool with equal maximum residual height is calculated by iterative calculation. In this way, the tool path of the whole surface is obtained. The experimental results show that compared with the commercial software MasterCAM9.0, the algorithm not only fully guarantees the machining quality of the curved surface, but also minimizes the total length of the tool path, thus improving the machining efficiency.
【作者單位】： 湘潭大學(xué)機(jī)械工程學(xué)院;湘潭大學(xué)復(fù)雜軌跡加工工藝及裝備教育部工作研究中心;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51375418) 湖南省自然科學(xué)基金資助項(xiàng)目(2017JJ4038)
【分類(lèi)號(hào)】：TG659

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