Programming instructions

NC Programming 17VRS Motion Blocks
4-25
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
•
If the thread is cut using positioning with minimized lag G06, the spin-
dle speed can be changed during thread cutting by using the spindle
override. The feedrate will adjust accordingly. The feedrate override
will not be active.
•
The immediate stop (emergency off, stop in setup mode), the spindle
speed and the feedrate are reduced in synch with one another and are
increased in synch following a restart.
•
With taper threads, the thread lead is stated with respect to the main
axis. If the desired thread lead is to be expressed relative to the Z axis,
the lead must be declared in interpolation parameter K. If the thread
pitch applies to the X axis, it must be programmed in interpolation pa-
rameter I.
•
The thread lead is interpreted as a radius dimension when machining
face threads on a lathe using diameter programming.
•
Depending on the parameter setting, the thread lead can be entered
using 3 or 4 places to the left of the decimal point and, correspondingly
5 or 4 places to the right of the decimal point.
NOTE
The G33 function is only available when APRB04 (axis
processor) is present.
Example NC-program for longitudinal thread
20
40
60
80
100
20 40 60 80 100 120 140
Z
X
[P1]
[P2]
[P4]
[P3]
[P5]
[P6]
Fig. 4-33: Thread cutting—longitudinal thread
Thread lead 3 mm
Thread depth: 4 mm Thread depths per cut: 2 mm