Programming A Circle With Known Center Point - Siemens SINUMERIK 840D Operating Manual

Programming technological functions (cycles)
8.7 Further cycles and functions ShopMill
Parameter
F
Radius compensation
8.7.8

Programming a circle with known center point

The tool travels along a circular path from its actual position to the programmed circle end
point. You must know the position of the circle center point. The control calculates the radius
of the circle/arc on the basis of your interpolation parameter settings.
The circle can only be traversed at machining feedrate. You must program a tool before the
circle can be traversed.
Procedure
Parameter
Direction of rotation
X
428
Description
Machining feedrate
Input defining which side of the contour the cutter travels in the programmed
direction:
Radius compensation to right of contour
Radius compensation to left of contour
Radius compensation off
The previously programmed setting for radius compensation is used.
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 "Circle center point" softkey.
Description
The tool travels in the programmed direction from the circle starting point to its end
point. You can program this direction as clockwise or counterclockwise.
Clockwise direction of rotation
Counterclockwise direction of rotation
Target position X (abs) or target position X referred to the last programmed
position (inc)
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Unit
mm/rev
mm/min
mm/tooth
Unit
mm
Milling