The traditional positioning accuracy detection method of feed shaft for numerical control(NC) machine tool exists low accuracy, method obsolete and poor measurement repeatability.

传统的数控机床进给轴定位精度的检测方法，存在精度低、方法落后、检验重复性差等缺点。

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In order to improve the plastification output, we adopt double-head of cylinder screw stem and two-feed chute. The two chute of the cylinder are both fixed on the special feed shaft stand.

为提高塑化产量，采用双头机头机筒螺杆两道机筒进料口，都作了特殊设计，以便于吃料和排气，两道机筒都装在专用加料轴承座上。

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By changing the speed of grinding wheel, its swing frequency and the feed speed of shaft direction, different experiment results were got.

通过改变砂轮转速、砂轮摆动频率、轴向进给量，获得了一些具有对比性的试验结果。

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