HEIDENHAIN TNC 620 User Manual page 24

Contents
6 Programming: Programming contours........................................................................................ 171
6.1 Tool movements................................................................................................................................... 172
Path functions........................................................................................................................................ 172
FK free contour programming (Advanced programming features software option)...............................172
Miscellaneous functions M....................................................................................................................172
Subprograms and program section repeats.......................................................................................... 173
Programming with Q parameters.......................................................................................................... 173
6.2 Fundamentals of Path Functions........................................................................................................174
Programming tool movements for workpiece machining...................................................................... 174
6.3 Approaching and departing a contour...............................................................................................178
Overview: Types of paths for contour approach and departure.............................................................178
Important positions for approach and departure....................................................................................179
Approaching on a straight line with tangential connection: APPR LT.................................................... 181
Approaching on a straight line perpendicular to the first contour point: APPR LN................................ 181
Approaching on a circular path with tangential connection: APPR CT...................................................182
Approaching on a circular path with tangential connection from a straight line to the contour: APPR
LCT......................................................................................................................................................... 183
Departing in a straight line with tangential connection: DEP LT........................................................... 183
Departing in a straight line perpendicular to the last contour point: DEP LN........................................ 184
Departing on a circular path with tangential connection: DEP CT.........................................................185
Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT...............185
6.4 Path contours - Cartesian coordinates...............................................................................................186
Overview of path functions................................................................................................................... 186
Straight line L......................................................................................................................................... 187
Inserting a chamfer between two straight lines....................................................................................188
Corner rounding RND.............................................................................................................................189
Circle center CC..................................................................................................................................... 190
Circular path C around circle center CC................................................................................................ 191
Circle CR with defined radius................................................................................................................ 192
Circle CT with tangential connection..................................................................................................... 194
Example: Linear movements and chamfers with Cartesian coordinates............................................... 195
Example: Circular movements with Cartesian coordinates................................................................... 196
Example: Full circle with Cartesian coordinates.................................................................................... 197
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TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013