Machining Plane, Milling Direction, Retraction Plane, Safe Clearance And Feedrate (Pl, Rp, Sc, F) - Siemens SINUMERIK 840D sl Operating Manual
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8.7 Machining plane, milling direction, retraction plane, safe clearance and feedrate (PL, RP, SC, F)
Parameter
Description
Jaw type
Selecting the jaw type of the counterspindle. Dimensions of the front edge or stop edge -
(only if spindle chuck data "yes")
● Jaw type 1
● Jaw type 2
ZC4
The main spindle chuck dimensions - (only for spindle chuck data "yes")
ZS4
Stop dimension of the main spindle - (only for spindle chuck data "yes")
ZE4
Jaw dimension of the main spindle for jaw type 2 - (only for spindle chuck data "yes")
ZC3
Chuck dimension of the counterspindle - (only for spindle chuck data "yes" and for a coun‐
terspindle that has been set up)
ZS3
Stop dimension of the counterspindle - (only for spindle chuck data "yes" and for a coun‐
terspindle that has been set up)
ZE3
Jaw dimension of the counterspindle with jaw type 2 - (only for spindle chuck data "yes"
and for a counterspindle that has been set up)
XR3
Tailstock diameter - (only for spindle chuck data "complete" and tailstock that has been set
up)
ZR3
Tailstock length - (only for spindle chuck data "complete" and tailstock that has been set
up)
XA
Outside diameter – (only for tube and cylinder)
XI
Inside diameter (abs) or wall thickness (inc) – (only for tube)
N
Number of edges – (only for polygon)
SW or L
Width across flats or edge length – (only for polygon)
W
Width of the blank - (only for centered cuboid)
L
Length of the blank - (only for centered cuboid)
8.7
Machining plane, milling direction, retraction plane, safe clearance
and feedrate (PL, RP, SC, F)
In the program header, cycle input screens have general parameters that always repeat.
You will find the following parameters in every input screen for a cycle in a G code program.
Parameter
Description
PL
Each input screen has a selection box for the planes, if the planes have not been specified
by NC machine data.
Machining plane:
● G17 (XY)
● G18 (ZX)
● G19 (YZ)
Milling direction
When machining a pocket, a longitudinal slot or a spigot, the machining direction (climbing
- only for milling
or conventional) and the spindle direction are taken into account in the tool list. The pocket
is then machined in a clockwise or counter-clockwise direction.
During path milling, the programmed contour direction determines the machining direction.
Turning
Operating Manual, 05/2017, A5E40868721
Creating a G code program
Unit
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Unit
225
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