Owner's manual

Using Pocket Milling Cycles
Chapter 22
22-10
If L is programmed, the tool plunges along the Z axis to the incremental
depth specified by the L parameter. If L is not programmed, the tool
plunges a long the Z axis to the pocket depth specified by the Z parameter.
The plunge takes place at the plunge feedrate specified by the E parameter.
After the plunge operation a roughing cut is made at the feedrate specified
by the F parameter to the arc-center at the +X or +Y end of the slot.
A plunge to the next incremental L level or to the programmed Z level is
made. A roughing cut is made at the feedrate F to the arc-center at the -X
or -Y end of the slot. This process is repeated at each L level until the slot
is machined out. When the slot is machined out the control raises the tool
to the initial Z level plus the clearance amount and then moves it to the
pre-cycle position of the tool.
Use the G88.1 pocket milling roughing cycle to rough out a circular pocket
in a workpiece. This cycle makes multiple circular cuts at a programmed
width a nd depth.
The G88.1 block used to rough out a circular pocket has this format:
G88.1 X__Y__Z__R__P__H__D__L__E__F__;
Where : Is :
XY
The coordinates thatspecify the centerofthecircularpocket.
Z
The coordinate (along the plungingaxis)thatspecifies the bottomofthe circular
pocket.
R
The radius of thecircular pocket. This parameter mustbeprogrammed.
P
Directionofroughing cut.
H
Finishallowance.
D
Roughingcutthickness.
L
Incrementalplunge depth.
E
Plungefeedrate.
F
Roughingfeedrate.
22.1.4
Circular Pocket Roughing
Using G88.1