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roli_w
03-30-2012, 10:59 AM
Hello
Can anybody tell me if it’s possible to mill an ellipse with a milling head on a Weingärtner Rotomill MPMC (turn-milling-machine) with Siemens 840D controller????

AdminCrew
03-30-2012, 06:22 PM
yes!

Hugge
03-31-2012, 07:22 AM
Here an example program.
ASCALE Y 2.0 ;scaling Y axis one factor 2, 1mm programmed traverse path are 2mm

N80 G0 X0 Y0 Z2 M107

;simply program a 30 circle
N10 G0 X0 Y0 Z2
N40 G1 Z-5
N45 G1 X-15 Y0
N50 G3 X15 Y0 CR=15
N55 G3 X-15 Y0 CR=15
N60 G1 X0 Z0
N65 G0 Z5

SCALE ;scaling deselection

creates an oval of 30mm in X and 60mm in Y
It’s actually quite simply, hope I was able to help you out!

Kind regards
Hugge

Egmont
03-31-2012, 01:22 PM
Yes that a way to do it when you mill in X and Y and the tool axis is Z.
Because it’s a Weingärtner Rotomill MPMC (turn-milling machine) I can imagine quite well that the ellipse is milled on the jacket and that the milling axis lies on the Z axis. But it’s not clear in the question. We will need more information: a sketch, setup situation and more details about the tool.

Regards

Ing. Egmont Schleich
Trainer for WFL Millturn Maschinen
T E C A S
Technology Assistance
www.tecas.at