Siemens SINUMERIK 840D Programming Manual page 134

Milling Cycles
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3.7 Milling rectangular pockets - POCKET1
• When machining of the pocket is completed the tool
is traversed to the pocket center point on the
retraction plane and the cycle is terminated.
Description of parameters
See Section 2.1.2. (Drilling, Centering – CYCLE81)
for a description of parameters RTP, RFP, SDIS.
See Section 3.5 (SLOT1) for a description of
parameters FFD, FFP1, MID, CDIR, FAL, VARI,
MIDF, FFP2, SSF.
See Section 3.2 for cycle setting data _ZSD[1].
DP and DPR (pocket depth)
The pocket depth can be defined as either absolute
(DP) or relative (DPR) to the reference plane.
If it is entered as a relative value, the cycle
automatically calculates the correct depth on the
basis of the positions of the reference and retraction
planes.
LENG, WID and CRAD (length, width and radius)
The shape of a pocket in the plane is determined with
parameters LENG, WID and CRAD.
If it is not possible to traverse to the programmed corner
radius with the active tool because its radius is larger,
the corner radius of the completed pocket corresponds
to the tool radius. If the milling cutter radius is greater
than half the length or width of the pocket, the cycle is
aborted and alarm 61105 "Cutter radius too large" is
output.
CPA, CPO (center point)
With parameters CPA and CPO you define the center
point of the pocket in the abscissa and ordinate.
STA1 (angle)
STA1 defines the angle between the positive abscissa
and the longitudinal axis of the pocket.
3-134
Y
CPA
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
03.96
08.97
STA1
CRAD
G2
G3
 Siemens AG 2000 All rights reserved.
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