Siemens SINUMERIK 802D sl Programming Manual page 125

04.07
1. The tool can operates at a normal cutting feedrate. Here the normal time con-
stant is applied.
2. The retraction can be overridden. The retraction speed set to GUD7 _ZSFI[2] is
applied in this case.
Point R
q
q
q
Fig. 4-20
1. The tool can operate at a normal cutting feedrate. Here the normal time con-
stant is applied.
2. The retraction can be overridden. The retraction speed set to GUD7 _ZSFI[2] is
applied in this case.
3. The retraction can be overridden. Here the normal time constant is applied.
An in--position check is carried out at the end of each operation of 1. and 2. in
the peck tapping cycle during a rigid tapping cycle.
Explanation
High- -speed peck tapping cycle
Rapid traverse is carried out to point R after positioning along the X and Y axes.
Cutting is carried out from point R,with depth Q (depth of cut for each cutting feed).
Subsequently, the tool is retracted by the distance d. Whether retraction is overrid-
den or not is specified by a value other than 100% set to GUD7 _ZSFI[2]. The
spindle is stopped once point Z is reached and then rotated in the reverse direction
for retraction. The retraction distance d is to be set in GUD7 _ZSFR[1].
© Siemens AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
d = cutting start distance
Initial level
(3)
(1)
d
(2)
d
Point Z
Peck tapping cycle (GUD7 _ZSFI[1] = 3)
Enhanced Level Commands
4.1 Program support functions (1)
Point R
(3)
(1)
q
(2)
q
q
d
d
Point Z
4-125