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根据切削加工系统的颤振理论，讨论了在低速切削状态下，刀具后刀面的磨损宽度及刀具耐度推导了在低速稳切割下，后刀面磨损宽度及力具耐用度计算的经验公式，从而在低速范围内，给稳态切削刀具耐用度的选择提供了一个理论依据．
According to the flutter theory of the cutting system, the empirical formula of the wear width and tool durability of the flank face under low speed and steady cutting is discussed when the tool flank wear width and the tool resistance at low cutting speed , Which provides a theoretical basis for the selection of the durability of steady cutting tools in the low speed range.