G73 High-speed Peck Drilling Cycle for Deep Holes

Format

G73 X_Y_Z_R_Q_ F_ K_

Machining Process

Machining process of G73 is as illustrated as follows:

  1. The tool moves to the specified hole position (X, Y) at G00 speed.
  2. The tool goes down to the specified point R at G00 speed.
  3. The tool moves down cutting depth Q relative to the present drilling depth at G01 speed.
  4. The tool moves rapidly upward retract distance δ (specified by parameter “G73_G83 retract amount”).
  5. The tool repeats the above drilling operations until reaching point Z at the bottom of hole.
  6. The tool returns to the initial point (G98) or point R (G99) at G00 speed.

Programming Example

F1200 S600

M03 'spindle CW on

G90

G00 X0 Y0 Z10 'move to the initial point

G17

G90 G99 'set the coordinates of point R, point Z and hole 1, with dwell as 2s and drilling speed as 800

G73 X5 Y5 Z-10 R-5 Q2 F800

X25 'hole 2

Y25 'hole 3

G98 X5 'hole 4, and set to return to the initial point.

X10 Y10 Z-20 'hole 5, and set a new point Z as -20

G80

M05 'spindle stops

M02