…Commands for NC machine tools consist of geometrical numerical information given by the coordinates of the points that define the contour and the drilling positions, and numerical information that determines the machining conditions such as the feed rate and the spindle speed. NC machine tools have two types of control: contour (continuous) control and point-to-point (PTP) control. The former is used for continuously controlling the relative positions of the workpiece and the tool on milling machines and lathes, while the latter is used for controlling the position of the workpiece on drill presses and jig boring machines. … *Some of the terms mentioned in "positioning control" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…NC工作機械に対する指令は,輪郭を定める点や穴あけ位置の座標で与えられる幾何学的数値情報,および送り速度やスピンドル速度の加工条件を定める数値情報からなっている。 NC工作機械には,輪郭(連続)制御と位置決め(PTP)制御の二つの方式がある。前者はフライス盤,旋盤などで加工物と工具の相対的関係位置を連続的に制御する場合であり,後者はボール盤,ジグ中ぐり盤などで加工物の位置を制御する場合である。… ※「位置決め制御」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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