Siemens SINUMERIK 840D sl Operation/Programming Manual page 223

08/2005
5
Alternating cutting depth
♥ Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
Contour finish
Unmachined part
Finished part
Boundary between unmachined and finished parts at the top
Unmachined part
Finished part
α
Boundary between unmachined and finished parts at the side
Instead of working with constant cutting depth D, you can use an
alternating cutting depth to vary the load on the tool edge and
increase the tool life.
D
D - 10%
Alternating cutting depth
The percentage for alternating cutting depth is stored in a machine
data code.
Please also refer to the machine manufacturer's instructions.
ShopTurn Functions
5.4 Contour turning
X
α > 1: Finish to top
α α =45°
Z
X
α = 1: Finish to side
Contour finish
α = − 45°
Z
D - 10%
First cut
Second cut
5
D
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