上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
42 Specialized, Concentrated, Focused
Command Format: G87 X_Y_Z_R_Q_P_F_K_;
Description:
X_Y_: hole position data (absolute/incremental coordinate)
Z_: the position of point Z at the bottom of hole (absolute programming); the distance from point
R to point Z at the bottom of the hole (incremental programming)
R_: the position of point R (absolute programming); the distance from the initial point to point R
(incremental programming)
Q_: displacement of cutter (positive and incremental, minus mark will be ignored)
P_: the dwell time at the bottom of the hole, in ms, with no decimal point
F_: feed speed, even if the canned cycle is cancelled, this modal data is still effective in the
subsequent machining.
K_: number of repeats (repeated movement and drilling, effective under G91 incremental mode)
Fig. 4-29 G87 Machining Process
Fig. 4-30 Oriented Spindle Stop (OSS) Sketch Map
Process Description:
1. The cutter moves to the hole position (X, Y) in G00;
2. After OSS, offsets Q distance in a direction opposed to the direction of boring cutter specified
by the parameter ―Oriented Spindle Stop (OSS)‖;
3. Moves down to the specified point R in G00, and offsets Q distance;
4. Spindle CW;
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