HEIDENHAIN TNC 640 (34059x-05) User Manual
Page 28
Contents
28
TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015
6
Programming: Programming contours...................................................................................... 205
6.1
Tool movements.................................................................................................................................. 206
Path functions....................................................................................................................................... 206
FK free contour programming.............................................................................................................. 206
Miscellaneous functions M...................................................................................................................206
Subprograms and program section repeats......................................................................................... 207
Programming with Q parameters......................................................................................................... 207
6.2
Fundamentals of Path Functions.......................................................................................................208
Programming tool movements for workpiece machining..................................................................... 208
6.3
Approaching and departing a contour............................................................................................. 212
Starting point and end point................................................................................................................. 212
Overview: Types of paths for contour approach and departure............................................................214
Important positions for approach and departure...................................................................................215
Approaching on a straight line with tangential connection: APPR LT................................................... 217
Approaching on a straight line perpendicular to the first contour point: APPR LN............................... 217
Approaching on a circular path with tangential connection: APPR CT..................................................218
Approaching on a circular path with tangential connection from a straight line to the contour:
APPR LCT.............................................................................................................................................. 219
Departing in a straight line with tangential connection: DEP LT.......................................................... 219
Departing in a straight line perpendicular to the last contour point: DEP LN....................................... 220
Departing on a circular path with tangential connection: DEP CT........................................................221
Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT..............221
6.4
Path contours - Cartesian coordinates............................................................................................. 222
Overview of path functions.................................................................................................................. 222
Straight line L........................................................................................................................................223
Inserting a chamfer between two straight lines...................................................................................224
Corner rounding RND........................................................................................................................... 225
Circle center CC.................................................................................................................................... 226
Circular path C around circle center CC............................................................................................... 227
CircleCR with defined radius................................................................................................................ 228
Circle CT with tangential connection....................................................................................................230
Example: Linear movements and chamfers with Cartesian coordinates.............................................. 231
Example: Circular movements with Cartesian coordinates.................................................................. 232
Example: Full circle with Cartesian coordinates................................................................................... 233