Siemens SINUMERIK 840D sl Operation/Programming Manual page 275

08/2005
5
Outside contour
Required direction of
rotation for machining
Down-cut
Up-cut
Inside contour
Required direction of
rotation for machining
Down-cut
Up-cut
Contour transition
elements
Additional commands
Additional functions
♥ Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
CW spindle rotation
Programming in clockwise direction
CCW cutter radius compensation
Programming in counterclockwise
direction, CW cutter radius compensation
CW spindle rotation
Programming in counterclockwise
direction, CCW cutter radius
compensation
Programming in clockwise direction
CW cutter radius compensation
As a transition between two contour elements, you can choose a
radius or a chamfer. The transition is always appended to the end of a
contour element. The contour transition is selected in the
parameterization screen form of the contour element.
You can use a contour transition element whenever there is an
intersection between two successive elements which can be
calculated from input values. Otherwise you must use the
"Straight/Circle" contour elements.
That means that for a closed counter, you can also program a
transition element from the last to the first element of the contour. The
contour starting point is outside the contour after you have
programmed the transition.
For each contour element, you can enter any additional commands in
G code format, for example, you can program a special feedrate for
the circle contour element.
You can enter the additional commands (max. 40 characters) in the
extended parameterization screen form ("All parameters" softkey).
The following additional functions are available for programming a
contour:

Tangent to preceding element
You can program the transition to the preceding element as a
tangent.

Dialog selection
If two different possible contours result from the parameters
entered thus far, one of the options must be selected.

Close contour
From the current position, you can close the contour with a straight
line to the starting point.
ShopTurn Functions
5.6 Contour milling
CCW spindle rotation
Programming in counterclockwise
direction, CW cutter radius compensation
Programming in clockwise direction
CCW cutter radius compensation
CCW spindle rotation
Programming in clockwise direction
CW cutter radius compensation
Programming in counterclockwise
direction, CCW cutter radius
compensation
5
5-275