本文讨论了在经济型数控铣床上，采用增加第四轴的方法加工压辊的原理及数控编程方法；
In this paper, the principle of manufacturing pressing roller and the method of CNC programming on the Economical CNC mill are discussed by means of increasing the 4th Axis.
该运动控制卡能同时采集四轴的编码器脉冲信号，输出四路模拟电压控制伺服电机，同时能控制I/O信号的输入和输出。
The card can collect four axes' encoder pulse signals simultaneously, and control servo motor by four output analog voltage. Furthermore, it can control input and output I/O signals.
你可能最好还是开四轴驱动的车。
You'd probably be better off with the four reel drive vehicle.
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