User Stock Removal Programs; Supporting Functions For Stock Removal; Generate Contour Table (Contpron) - Siemens SINUMERIK 840D sl Programming Manual

3.24

User stock removal programs

3.24.1

Supporting functions for stock removal

Preprogrammed stock removal programs are provided for stock removal. Beyond this, you
have the possibility of generating your own stock removal programs using the following listed
functions:
● Generate contour table (CONTPRON)
● Generate coded contour table (CONTDCON)
● Deactivate contour preparation (EXECUTE)
● Determine point of intersection between two contour elements (INTERSEC)
(Only for tables that were generated using CONTPRON)
● Execute contour elements of a table block-by-block (EXECTAB)
(Only for tables that were generated using CONTPRON)
● Calculate circle data (CALCDAT)
Note
You can use these functions universally, not just for stock removal.
Requirements
The following must be done before calling the CONTPRON or CONTDCON functions:
● A starting point that permits collision-free machining must be approached.
● The cutting radius compensation must be deactivated with G40.
3.24.2

Generate contour table (CONTPRON)

CONTPRON switches on the contour preparation. The NC blocks that are subsequently called
are not executed, but are split-up into individual movements and stored in the contour table.
Each contour element corresponds to one row in the two-dimensional array of the contour
table. The number of relief cuts is returned.
Syntax
Activate contour preparation:
CONTPRON(<contour table>,<machining type>,<relief cuts>,
<machining direction>)
Deactivate contour preparation and return to the normal execution mode:
EXECUTE(<ERROR>)
See "Deactivate contour preparation (EXECUTE) (Page 1023)"
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Work preparation
3.24 User stock removal programs
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