Siemens SINUMERIK 840D Operation/Programming Manual page 196

3
Programming with ShopMill
3.5 Contour milling
Tangent to preceding
element
Tangent to
prec. elem.
Selecting a dialog
Select
dialog
Accept
dialog
Closing the contour
Close
Continue
contour
Parameters
Cartesian:
X End point in the X direction (abs. or inc.)
Incremental dimensions: The plus/minus sign is evaluated.
Y End point in the Y direction (abs. or inc.)
Incremental dimensions: The plus/minus sign is evaluated.
L Length of line
α1
Starting angle to X axis
Angle to preceding element
α2
Tangential transition: α2=0
Polar:
L1 abs: distance between pole and end point
inc: distance between final point and end point
Incremental dimensions: The plus/minus sign is evaluated.
ϕ1
abs: polar angle between pole and end point
inc: polar angle between final point and end point
Incremental dimensions: The plus/minus sign is evaluated.
3-196
When entering data for a contour element you can program the
transition to the preceding element as a tangent.
Press the "Tangent to prec. elem." softkey.
The angle to the preceding element α2 is set to 0°. The "tangential"
selection appears in the parameter input field.
When entering data for a contour element, there may be two different
contour options, one of which you have to select.
Press the "Select dialog" softkey to switch between the two
different contour options.
The selected contour appears in the graphics window as a solid black
line and the alternative contour appears as a dashed green line.
Press the "Accept dialog" softkey to accept the chosen
alternative.
A contour always has to be closed. If you do not wish to create all
contour elements from starting point to starting point, you can close
the contour from the current position to the starting point.
Press the "Continue" and "Close contour" softkeys.
ShopMill inserts a straight line between your current position and the
starting point.
Description for contour element "straight line"
SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
3
10.04
Unit
mm
mm
mm
Degr.
Degr.
mm
mm
Degr.
Degr.
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