Enhanced Level Commands
4.1 Program support functions (1)
04.07
4-125
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SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
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.
(3)
Initial level
d
Point Z
d = cutting start distance
Point R
q
q
q
d
(2)
(1)
(3)
d
Point Z
Point R
q
q
q
d
(2)
(1)
Fig. 4-20 Peck tapping cycle (GUD7 _ZSFI[1] = 3)
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. W hether 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].