粗车刀具按其进给方向可以是右手型的或是左手型的。
Rough turning tools can be right-hand or left-hand types, depending upon the direction of feed.
对于曲率变化大的曲面，建立曲面的最优进给方向图，以确定最优走刀方向；
If the curvature of surface is changeful here and there, the maximum feedrate map must be established to determine the cutting directions.
电极的进给方向由两个压电驱动器的振动方式来决定。该装置具有体积小、重量轻、结构简单、响应速度快等优点。
The movement direction of electrode is controlled by the piezoelectric actuators. The device features miniaturization, simple structure, light weight, and high response.
顺铣(同向铣削)：如同在图12.3b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。
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.
即使这种似乎在朝着不同方向的行进给你一种你确实在做什么的感觉，那还是个幻觉。
Even if this going towards what seems different gives you the feeling that you are really doing something, it is an illusion.
在加工端面、圆弧、圆锥以及蹊径直径相差较大的零件时，沿X轴方向进给时，固然进给速度不变，但切削线速度却不断地变化，导致加工表面质量变化。
In the end, arc, processing and ground is large diameter conical parts, along the X axis into to, is the same, but the linear cutting speed is constantly changing, the cutting surface quality changes.
至于涉及到铣刀转动的方向和工件的进给，铣削可以通过下列两种方法之一进行。
As far as the direction of cutter rotation and workpiece feed are concerned, milling is performed by either of the following two methods.
平行扫描轨迹间的进给线与层面边界方向一致，可以极大减缓层面加工的台阶效应。
The step effect in the layer manufacturing is improved because the feeding direction is identical with the layer border.
一面利用进给辊（24）送出纸带（K）， 一面原封不动地利用带捕捉器（21、21）夹持纸带（K），沿着图中所 示的轨迹（R）在图中所示的箭头B1的方向旋转。
While feed rollers 24 pay out a paper web K, tape catches 21, 21 turn with grasping the paper web K in a direction shown with an arrow B1 along an illustrated locus R.
一面利用进给辊（24）送出纸带（K）， 一面原封不动地利用带捕捉器（21、21）夹持纸带（K），沿着图中所 示的轨迹（R）在图中所示的箭头B1的方向旋转。
While feed rollers 24 pay out a paper web K, tape catches 21, 21 turn with grasping the paper web K in a direction shown with an arrow B1 along an illustrated locus R.
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