HEIDENHAIN TNC 640 (34059x-04) - Manual (Page 26)

Contents
26
TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 3/2014
6 Programming: Programming contours...................................................................................... 197
6.1 Tool movements.................................................................................................................................. 198
Path functions....................................................................................................................................... 198
FK free contour programming.............................................................................................................. 198
Miscellaneous functions M...................................................................................................................198
Subprograms and program section repeats......................................................................................... 199
Programming with Q parameters......................................................................................................... 199
6.2 Fundamentals of Path Functions.......................................................................................................200
Programming tool movements for workpiece machining..................................................................... 200
6.3 Approaching and departing a contour............................................................................................. 204
Overview: Types of paths for contour approach and departure............................................................204
Important positions for approach and departure...................................................................................205
Approaching on a straight line with tangential connection: APPR LT................................................... 207
Approaching on a straight line perpendicular to the first contour point: APPR LN............................... 207
Approaching on a circular path with tangential connection: APPR CT..................................................208
Approaching on a circular path with tangential connection from a straight line to the contour:
APPR LCT.............................................................................................................................................. 209
Departing in a straight line with tangential connection: DEP LT.......................................................... 210
Departing in a straight line perpendicular to the last contour point: DEP LN....................................... 210
Departing on a circular path with tangential connection: DEP CT........................................................211
Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT..............211
6.4 Path contours - Cartesian coordinates............................................................................................. 212
Overview of path functions.................................................................................................................. 212
Straight line L........................................................................................................................................213
Inserting a chamfer between two straight lines...................................................................................214
Corner rounding RND........................................................................................................................... 215
Circle center CC....................................................................................................................................216
Circular path C around circle center CC............................................................................................... 217
CircleCR with defined radius................................................................................................................ 218
Circle CT with tangential connection....................................................................................................220
Example: Linear movements and chamfers with Cartesian coordinates.............................................. 221
Example: Circular movements with Cartesian coordinates.................................................................. 222
Example: Full circle with Cartesian coordinates................................................................................... 223