WEIHONG ELECTRONIC Ncstudio - G89 Boring Cycle of Dwell at the Bottom of Hole

上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
Specialized, Concentrated, Focused 45
G89 Boring Cycle of Dwell at the Bottom of Hole
Command Format: G89 X_Y_Z_R_P_F_K_;
Description:
X_Y_: hole position data (absolute/incremental coordinate)
Z_: the position of point Z at the bottom of the 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)
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)
Z
R
Initial Point
G98
Z
R
Initial Point
G99
P
P
(X,Y)
(X,Y)
Fig. 4-32 G89 Machining Process
Process Description:
1. The cutter moves to the hole position (X, Y) in G00;
2. Moves down to the specified point R in G00;
3. Moves down to point Z at the bottom of the hole in G01;
4. Pauses for P;
5. Retracts to point R in G01;
6. Retracts to initial point (G98) or point R (G99) in G00.
Programming Example:
F1200. S600
G90
G00 X0. Y0. Z10. ’moving to the initial point
G17
M03 ’spindle CW on
G90 G99
’Setting coordinates of point R, point Z and hole 1, with dwell as 2.5s, machining speed as 800
G89 X5. Y5. Z-10. R-5. P2500 F800