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1·Down milling (climb milling). As can be seen in Fig. 12.3b, in down milling the cutter rotation coincides with the direction of feed at the contact point between the tool and the workpiece.

顺铣(同向铣削)：如同在图12.3 b中看到的那样，在顺铣时刀具与工件之间接触点上铣刀旋转与进给方向一致。