G36 Arc Drilling Cycle

Format

G36 Xx Yy Ir Jθ PΔθ Kn

Description

It is used for drilling evenly-spaced holes on a circle with specified angle between adjacent holes.

• X, Y: center position of this cycle (G90/G91 is influential)
• I: circle radius r.
• J: θ, the included angle between the first point to be drilled and X-axis.
• K: number of holes, within range -9999~9999. If the number is 0, an error report will be given. If the number is greater than 0, hole drilling direction is CW. If it is less than 0, hole drilling direction is CCW.

Command G36 drills “n” evenly-spaced holes on a circle with X, Y as center and r as radius, at the same time, the included angle is θ between the first drilling point and X-axis, and the angle between adjacent holes is Δθ.

The tool moves from one hole to another one at G0 speed.

The only difference between G36 and G34 is that the former specifies the included angle between two holes.

Programming Example

Sketch of arc drilling cycle is as follows:

The machine tool starts drilling from position 1 to position 8.

The included angle is θ between position 1 and positive direction of X axis.

Drilling actions are specified by G81 in program block N001.

N001 G91 G81 G99 Z-5 R6  F500 K1

N002 G36 X10 Y10 I20 J45 P30  K5