推荐回答（2个）
G0 快速移动 示例 模态 G1 直线插补 示例 模态 G2 顺时针圆弧插补 示例 模态 G3 逆时针圆弧插补 示例 模态 G5 中间点圆弧插补 示例 模态 G33 恒螺纹的螺纹切削 示例 模态 G331 不带补偿夹具切削内螺纹 示例 G332 不带补偿夹具切削内螺纹-退刀 示例 G4 暂停时间 示例 程序段 G63 带补偿夹具切削内螺纹 示例 程序段 G74 回参考点 示例 程序段 G75 回固定点 示例 程序段 G158 可编程的偏置 示例 程序段 G258 可编程的旋转 示例 程序段 G259 附加可编程旋转 示例 程序段 G25 主轴转速下限 示例 程序段 G26 主轴转速上限 示例 程序段 G17 X/Y平面 示例 模态有效 G18 Z/X平面 示例 模态有效 G19 Y/Z平面 示例 模态有效 G40 刀尖半径补偿方式的取消 示例 模态 G41 调用刀尖半径补偿刀具在轮廓左面移动 示例 模态 G42 调用刀尖半径补偿刀具在轮廓右面移动 示例 模态 G500 取消零点偏置 示例 模态 G54 第一可设零点偏置 示例 模态 G55~G57 第二、三、四可设零点偏置 示例 模态 G53 按程序段方式取消可设定零点偏置 示例 程序段 G9 准确定位，单程序段有效 示例 程序段 G70 英制尺寸 示例 模态有效 G71 公制尺寸 示例 模态有效 G90 绝对尺寸 示例 模态有效 G91 增量尺寸 示例 模态有效 G94 进给率F，单位毫米/分 模态有效 G95 主轴进给率F,单位:毫米/转
数控落地铣镗床编程指令：
(1）点定位指令G00
点定位指令(G00)为刀具以快速移动速度移动到用绝对值指令或增量值指令指定的工件坐标系中的位置。
指令格式：G00X—Y—Z一； 式中X—Y—Z一为目标点坐标。以绝对值指令编程时，刀具移动到终点的坐标值；以增量值指令编程时，指刀具移动的距离，用符号表示方向。
使用G00指令用法如下。如上图4.6所示，刀具由A点快速定位到B点其程序为： G00G90X120．Y60．；（绝对坐标编程）
(2）直线插补指令G01
用G01指定直线进给，其作用是指令两个坐标或三个坐标以联动的方式，按指定的进给速度F，从当前所在位置沿直线移动到指令给出的目标位置，插补加工出任意斜率的平面或空间直线。
指令格式：G0lX—Y—Z—F一； 式中X—Y—Z一为目标点坐标。可以用绝对值坐标，也可以用增量坐标。F（mm／min)为刀具移动的速度。加工时进给速度F可以通过CNC的控制面板上的旋钮在（0—120％）之间变化。
程序段G01X10．Y20．Z20．F80．使刀具从当前位置以80mm／min的进给速度沿直线运动到(10,20,20)的位置。
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