Example: Fk Programming 1 - HEIDENHAIN TNC 640 User Manual

Programming Contours | Path contours – FK free contour programming

Example: FK programming 1

%FK1 G71 *
N10 G30 G17 X+0 Y+0 Z-20*
N20 G31 X+100 Y+100 Z+0*
N30 T 1 G17 S500*
N40 G00 G90 Z+250 G40 M3*
N50 G00 X-20 Y+30 G40*
N60 G01 Z-10 G40 F1000*
N70 APPR CT X+2 Y+30 CCA90 R+5 G41 F250*
N80 FC DR- R18 CLSD+ CCX+20 CCY+30*
N90 FLT*
N100 FCT DR- R15 CCX+50 CCY+75*
N110 FLT*
N120 FCT DR- R15 CCX+75 CCY+20*
N130 FLT*
N140 FCT DR- R18 CLSD- CCX+20 CCY+30*
N150 DEP CT CCA90 R+5 F2000*
N160 G00 X-30 Y+0*
N170 G00 Z+250 M2*
N99999999 %FK1 G71 *
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017
Definition of workpiece blank
Tool call
Retract the tool
Pre-positioning the tool
Move to working depth
Approach the contour on a circular arc with tangential
connection
FK contour section:
Program all known data for each contour element
Depart the contour on a circular arc with tangential
connection
Retract the tool, end program
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