5
08/2005 ShopTurn Functions
5.5 Millin
5
♥ Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition 5-253
Oscillation: Insert with oscillation along center axis of longitudinal slot:
The cutter center point oscillates along a linear path until it reaches the depth infeed.
If the depth has been reached, the path is executed again in the plane without depth
infeed.
EW Insertion angle (for oscillation only) Degrees
FZ Depth infeed feedrate (for end face/end face C and end face Y with central insertion
only)
mm/tooth
mm/min
FX Depth infeed feedrate (for peripheral surface/peripheral surface C and peripheral
surface Y with central insertion only)
mm/tooth
mm/min
5.5.6 Circumferential slot
The "Circumferential slot" function is used when you want to mill one
or more circumferential slots of the same size in a full circle or pitch
circle.
Tool size
Please note that there is a minimum size for the milling cutter used to
machine the circumferential slot:
Roughing:
1/2 slot width W – finishing allowance UXY = milling cutter
diameter
Finishing:
1/2 slot width W = milling cutter diameter
Edge finishing:
Finishing allowance UXY = milling cutter diameter
Annular slot
To create an annular slot, you must enter the following values for the
"Number N" and "Aperture angle α
1
" parameters:
N = 1
α
1
= 360°
Approach/retraction
1. The tool approaches the center point of the semicircle at the end of
the slot at rapid traverse at the height of the retraction plane and
adjusts to the safety clearance.
2. It then plunges into the workpiece at machining feedrate, allowing
for the maximum Z direction infeed (for face machining) and X
direction infeed (for peripheral surface machining) as well as the
finishing allowance. The circumferential slot is machined in the
programmed machining direction (climb or conventional) in a
clockwise or counterclockwise direction.
3. When the first circumferential slot is finished, the tool moves to the
retraction plane at rapid traverse.
4. The next circumferential slot is approached along a straight line or
circular path and then machined.
The rapid traverse feedrate for positioning on a circular path is
defined in a machine data code.
Please also refer to the machine manufacturer's instructions.
5. The tool moves back to the safety clearance at rapid traverse.
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