上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
28 Specialized, Concentrated, Focused
Point R Plane
Point R plane is also named R REFER plane; it is a plane where the cutter moves at a speed
from rapid traverse rate (G00) to cutting workpiece speed (GXX). The distance between workpiece
surface and point R, generally within 2~5mm, mainly varies with the dimension of workpiece surface.
Hole Bottom Plane
When machining a blind hole, hole bottom plane is Z-axis height at the bottom of hole. When
machining a through hole, the cutter usually goes beyond the hole bottom a certain distance to make
sure all holes are machined to the specified depth. When drilling a hole, the impact of drill on hole
depth should also be taken into consideration.
Hole machining cycle is not related to plane selection command (G17, G18, and G19).
Whichever plane is selected, hole machining is positioning in XY plane and drilling in Z-axis.
Canned Cycle Codes
Data Form
Data of Address R and Address Z in canned cycle commands are specified in incremental mode
(G91); R indicates the distance from initial point to point R, and Z indicates the distance from point R
to point Z in the hole bottom plane (refer to Fig. 4-18).
G90 (Absolute Coordinate)
G91 (Increment Coordinate)
Fig. 4-18 Canned Cycle
Gxx Hole Machining Mode
The command format of hole machining is as shown below:
Gxx X_Y_Z_R_Q_P_F_K_;
X_Y_: position of the hole to be machined (absolute/incremental coordinate)
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