在车床加工中，如车削内孔、车削螺纹时，为便于退出刀具并将工序加工到毛坯底部，常在待加工面末端，预先制出退刀的空槽，称为退刀槽。
vt. escape
misc. tool withdrawal groove ; relief groove
对零件的工艺结构，如小圆角、倒角、退刀槽等可省略不画。
In assembly drawings, certain technical structures, such as round, chamfer, and undercut can be omitted.
介绍了工件退刀槽宽度小于机床退刀行程的内凹齿轮的齿形加工方法，解决了传统加工方法不易实现的难题之一。
Tooth profile machining of mid-concave gear with narrow run-out groove is introduced, which solves a difficult problem using traditional machining.
针对某S195缸套在退刀槽处断缸的问题，分析了该缸套上退刀槽处的机械应力以及机械应力与热应力的耦合结果。
To the question of fracture in the relief notch of some type 'S195cylinder, analyzing mechanical stress and coupling results of thermal stress in relief notch of some type S195 cylinder.
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