Okuma G73 High Speed Deep Hole Drilling Cycle

Okuma G73 High Speed Deep Hole Drilling Cycle

G73 High Speed Deep Hole Drilling Cycle

Programming

G73 X__Y__Z__R__P__Q__F__

Parameters

ParameterDescription
X,YCoordinate values of hole position
ZHole bottom level
In G90 mode:

  • Position in the selected coordinate system

In G91 mode:

  • Distance from the point R level
RPoint R level
PDwell time at hole bottom
QPecking amount (positive, incremental value)
FFeedrate

Machining Sequence

Okuma G73 High Speed Deep Hole Drilling Cycle

(1) Positioning along the X- and Y-axis at a rapid feedrate
(2) Positioning to the point R level at a rapid feedrate
(3) Drilling by the pecking amount specified by Q at a cutting feedrate and with the spindle rotating in the forward direction
(4) Cutting tool retraction by “d”.

  • Set the retraction amount “d” at retraction in G73 cycle (high-speed deep hole) OR G83 CYCLE (DEEP HOLE) WITH I, J COMMAND of the NC optional parameter (fixed cycle).

(5) Drilling to the point R level by repeating steps (3) and (4)
(6) Dwelling at the point Z level for P seconds
(7) Returning to the return-point level at a rapid feedrate