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圓弧刃刀具微細(xì)非自由切削參數(shù)建模與預(yù)
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and Prediction of Non-free-cutting Parameters on Micro-cutting with Rounded-edge Tool
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    摘要:

    非自由切削是影響微細(xì)切削加工的重要效應(yīng)之一。針對(duì)微細(xì)切削條件下刀具圓弧刃區(qū)切削干涉作用顯著增強(qiáng)的特點(diǎn),，通過單元刀具之間切削干涉對(duì)切屑流動(dòng)方向的影響分析,，建立了圓弧刃刀具的排屑方向干涉模型。應(yīng)用Stabler法則和最小能量耗散原理確定出圓弧刃刀具作縱向進(jìn)給的切屑流動(dòng)方向,、等效切削刃,、流屑角和非自由系數(shù)。選取不同進(jìn)給量和切削深度的組合對(duì)以上非自由切削特征參數(shù)進(jìn)行了數(shù)值預(yù)報(bào),，預(yù)報(bào)結(jié)果可用于微細(xì)切削非自由狀態(tài)的評(píng)價(jià)和改善,，以及切削用量的合理匹配。

    Abstract:

    Non-free-cutting is an effect which affects the mechanism of micro cutting greatly. The influence of cutting intervene between elementary cutting tool on chip flow direction was analyzed, and chip flow intervene of the rounded-edge tool was mathematically modeled aims at the increase of cutting intervene caused by chip flow in the rounded-edge of micro cutting tool. Furthermore, chip flow direction, equivalent cutting edge and chip flow angle were deduced with Stabler rule and minimal energy dispersion principle respectively. Those above parameters were numerical predicted under different feed rate and cutting depth, and the prediction results can be used for the evaluation and improvement of micro-cutting status, as well as the optimization of cutting regimes.

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劉志兵,王西彬,方澤平.圓弧刃刀具微細(xì)非自由切削參數(shù)建模與預(yù)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(3):204-208. and Prediction of Non-free-cutting Parameters on Micro-cutting with Rounded-edge Tool[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(3):204-208.

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