Creating Contour Elements - Siemens SINUMERIK 840D Operation/Programming Manual

3
10.04

3.5.3 Creating contour elements

Cylinder surface
transformation
Parameter input
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
When you have created a new contour and specified the start point,
you can define the individual elements that the contour comprises.
The following contour elements are available for the definition of a
contour:
•
Horizontal line
•
Vertical line
•
Diagonal line
•
Circle / arc
For each contour element, you must parameterize a separate screen
form. The coordinates for a horizontal or vertical line are entered in
Cartesian format; however, for the contour elements Diagonal line and
Circle/arc you can choose between Cartesian and polar coordinates.
If you wish to enter polar coordinates you must first define a pole. If
you have already defined a pole for the start point, you can also relate
the polar coordinates to this pole. In this case there is therefore no
need to define another pole.
For contours (e.g. slots) on cylinders, the angle data for lengths are
specified. If the 'cylinder surface transformation' function is activated
via the "Alternat." softkey, you can also define the lengths of contours
(in the circumferential direction of the cylinder envelope) with angle
data. In that case, instead of X, Y and I, J, you will enter Xα, Yα and
Iα, Jα (see also Sec. "Cylinder surface transformation").
Please refer to the machine manufacturer's instructions.
Parameter entry is supported by various "help displays" that explain
the parameters.
If you leave certain fields blank, ShopMill assumes that the values are
unknown and attempts to calculate them from other parameters.
Conflicts may result if you enter more parameters than are absolutely
necessary for a contour. In such a case, try entering less parameters
and allowing ShopMill to calculate as many parameters as possible.
Programming with ShopMill
3.5 Contour milling
3
3-193