5 
 
08/2005  ShopTurn Functions
5.6 Contour millin
 
5
 
♥ Siemens AG, 2005. All rights reserved  
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition  5-285 
 
Slot side compensation 
 
When you want to mill a contour on the peripheral surface ("peripheral 
surface/peripheral surface C" machining plane), you can work with or 
without a slot wall offset.  
  
   Slot wall offset Off 
ShopTurn creates slots with parallel walls when the tool diameter is 
equal to the slot width. 
If the slot width is larger than the tool diameter, the slot walls will 
not be parallel. 
  
   Slot wall offset On 
ShopTurn creates slots with parallel walls also when the slot width 
is larger than the tool diameter. 
 
    If you want to work with a slot wall offset, you must not program the 
contour of the slot, but instead the imagined center path of a bolt 
inserted in the slot whereby the bolt touches both walls. The 
parameter D is used to specify the slot width. 
 
 
 
Contour
milling     >
 
Path
milling     >
 
¾  Press the "Milling", "Contour milling" and "Path milling" soft keys. 
 
 
Parameters Description  Unit 
 
T, D, F, S, V  See Sec. "Creating program blocks".   
 
Position Select from 8 different positions: 
   End face/End face C – Front 
   End face/End face C – Rear 
   Peripheral surface/Peripheral surface C – Inner 
   Peripheral surface/Peripheral surface C – Outer 
   End face Y – Front (only when Y axis exists) 
   End face Y – Rear (only when Y axis exists) 
   Peripheral surface Y – inner (only when Y axis exists) 
   Peripheral surface Y – Rear (only when Y axis exists) 
 
 
 
Clamp/release spindle (only for End face Y/Peripheral surface Y, and for End face 
C/Peripheral surface C if the tool is approached vertically for roughing) 
The function must be set up by the machine manufacturer.
 
 
 
Machining 
type 
 Roughing 
 Finishing 
Chamfer 
 
 
Machining 
direction 
Forward: machining is performed in the programmed contour direction 
Backward: machining is performed in the opposite direction to the programmed 
contour