HEIDENHAIN TNC 620 User Manual page 26

Contents
6 Programming: Programming contours...................................................................................... 185
6.1 Tool movements.................................................................................................................................. 186
Path functions....................................................................................................................................... 186
FK free contour programming (Advanced programming features software option)..............................186
Miscellaneous functions M...................................................................................................................186
Subprograms and program section repeats......................................................................................... 187
Programming with Q parameters......................................................................................................... 187
6.2 Fundamentals of Path Functions.......................................................................................................188
Programming tool movements for workpiece machining..................................................................... 188
6.3 Approaching and departing a contour............................................................................................. 192
Overview: Types of paths for contour approach and departure............................................................192
Important positions for approach and departure...................................................................................193
Approaching on a straight line with tangential connection: APPR LT................................................... 195
Approaching on a straight line perpendicular to the first contour point: APPR LN............................... 195
Approaching on a circular path with tangential connection: APPR CT..................................................196
Approaching on a circular path with tangential connection from a straight line to the contour:
APPR LCT.............................................................................................................................................. 197
Departing in a straight line with tangential connection: DEP LT.......................................................... 197
Departing in a straight line perpendicular to the last contour point: DEP LN....................................... 198
Departing on a circular path with tangential connection: DEP CT........................................................199
Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT..............199
6.4 Path contours - Cartesian coordinates............................................................................................. 200
Overview of path functions.................................................................................................................. 200
Straight line L........................................................................................................................................201
Inserting a chamfer between two straight lines...................................................................................202
Corner rounding RND........................................................................................................................... 203
Circle center CC....................................................................................................................................204
Circular path C around circle center CC............................................................................................... 205
CircleCR with defined radius................................................................................................................ 206
Circle CT with tangential connection....................................................................................................208
Example: Linear movements and chamfers with Cartesian coordinates.............................................. 209
Example: Circular movements with Cartesian coordinates.................................................................. 210
Example: Full circle with Cartesian coordinates................................................................................... 211
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TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 3/2014