Programming A Straight Line - Siemens SINUMERIK 840D Operating Manual

8.7.7

Programming a straight line

The tool moves at the programmed feedrate or with rapid traverse from its actual position to
the programmed end position.
Radius compensation
Alternatively, you can implement the straight line with radius compensation. The radius
compensation acts modally, therefore you must deactivate the radius compensation again
when you want to traverse without radius compensation. Where several straight line blocks
with radius compensation are programmed sequentially, you may only select radius
compensation in the first program block.
When executing the first path motion with radius compensation, the tool traverses without
compensation at the starting point and with compensation at the end point. This means that
if a vertical path is programmed, the tool traverses an oblique path. The compensation is not
applied over the entire traversing path until the second programmed path motion with radius
compensation is executed. The reverse effect occurs when radius compensation is
deactivated.
Procedure
Parameter
X
Y
Z
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
1. The ShopMill program to be edited has been created and you are in
the editor.
2. Press the menu forward key and the "Straight Circle" softkey.
3. Press the "Straight line" softkey.
4. Press the "Rapid traverse" softkey to enter the feedrate in rapid
traverse.
Description
Target position X (abs) or target position X referred to the last programmed
position (inc)
Target position Y (abs) or target position Y referred to the last programmed
position (inc)
Target position Z (abs) or target position Z referred to the last programmed
position (inc)
Note
Incremental dimensions: The sign is also evaluated.
Programming technological functions (cycles)
8.7 Further cycles and functions ShopMill
Unit
mm
mm
mm
427