本文介绍了用PC改造四米龙门刨床工作台的自动循环，点动前进和点动后退，自动进刀和退刀等功能的交流控制系统。
The AC control system of the 4m planer is retrofitted with PC for table automatic cycle, jogging forward and jogging backward, automatic feed and withdraw.
而立式主轴磨床既可以像卧式主轴磨床那样具有刨床式工作台也可以具有旋转工作台。
However, grinding machines with vertical spindles can have either a planer type table like that of the horizontal-spindle machine or a rotating worktable.
在第一种情况(卧式主轴)，卧式磨床通常具有安装工件的刨床式往复工作台。
In the first case (horizontal spindle), the machine usually has a planer-type reciprocating table on which the workpiece is held.
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