HEIDENHAIN TNC 620 (81760x-02) - Manual (Page 28)

Contents
28
TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 2/2015
6 Programming: Programming contours...................................................................................... 201
6.1 Tool movements.................................................................................................................................. 202
Path functions....................................................................................................................................... 202
FK free contour programming (option 19)............................................................................................ 202
Miscellaneous functions M...................................................................................................................202
Subprograms and program section repeats......................................................................................... 203
Programming with Q parameters......................................................................................................... 203
6.2 Fundamentals of path functions....................................................................................................... 204
Programming tool movements for workpiece machining..................................................................... 204
6.3 Approaching and departing a contour............................................................................................. 208
Starting point and end point................................................................................................................. 208
Overview: Types of paths for contour approach and departure............................................................210
Important positions for approach and departure...................................................................................211
Approaching on a straight line with tangential connection: APPR LT................................................... 213
Approaching on a straight line perpendicular to the first contour point: APPR LN............................... 213
Approaching on a circular path with tangential connection: APPR CT..................................................214
Approaching on a circular path with tangential connection from a straight line to the contour:
APPR LCT.............................................................................................................................................. 215
Departing in a straight line with tangential connection: DEP LT.......................................................... 216
Departing in a straight line perpendicular to the last contour point: DEP LN....................................... 216
Departing on a circular path with tangential connection: DEP CT........................................................217
Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT..............217
6.4 Path contours - Cartesian coordinates............................................................................................. 218
Overview of path functions.................................................................................................................. 218
Straight line L........................................................................................................................................219
Inserting a chamfer between two straight lines...................................................................................220
Corner rounding RND........................................................................................................................... 221
Circle center CC....................................................................................................................................222
Circular path C around circle center CC............................................................................................... 223
CircleCR with defined radius................................................................................................................ 224
Circle CT with tangential connection....................................................................................................226
Example: Linear movements and chamfers with Cartesian coordinates.............................................. 227
Example: Circular movements with Cartesian coordinates.................................................................. 228
Example: Full circle with Cartesian coordinates................................................................................... 229