HEIDENHAIN TNC 320 User Manual page 22

Contents
6 Programming: Programming contours........................................................................................ 167
6.1 Tool movements................................................................................................................................... 168
Path functions........................................................................................................................................ 168
FK free contour programming................................................................................................................168
Miscellaneous functions M....................................................................................................................168
Subprograms and program section repeats.......................................................................................... 169
Programming with Q parameters.......................................................................................................... 169
6.2 Fundamentals of Path Functions........................................................................................................170
Programming tool movements for workpiece machining...................................................................... 170
6.3 Approaching and departing a contour...............................................................................................174
Overview: Types of paths for contour approach and departure.............................................................174
Important positions for approach and departure....................................................................................175
Approaching on a straight line with tangential connection: APPR LT.................................................... 177
Approaching on a straight line perpendicular to the first contour point: APPR LN................................ 177
Approaching on a circular path with tangential connection: APPR CT...................................................178
Approaching on a circular path with tangential connection from a straight line to the contour: APPR
LCT......................................................................................................................................................... 179
Departing in a straight line with tangential connection: DEP LT........................................................... 179
Departing in a straight line perpendicular to the last contour point: DEP LN........................................ 180
Departing on a circular path with tangential connection: DEP CT.........................................................181
Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT...............181
6.4 Path contours - Cartesian coordinates...............................................................................................182
Overview of path functions................................................................................................................... 182
Straight line L......................................................................................................................................... 183
Inserting a chamfer between two straight lines....................................................................................184
Corner rounding RND.............................................................................................................................185
Circle center CC..................................................................................................................................... 186
Circular path C around circle center CC................................................................................................ 187
Circle CR with defined radius................................................................................................................ 188
Circle CT with tangential connection..................................................................................................... 190
Example: Linear movements and chamfers with Cartesian coordinates............................................... 191
Example: Circular movements with Cartesian coordinates................................................................... 192
Example: Full circle with Cartesian coordinates.................................................................................... 193
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TNC 320 | User's Manual HEIDENHAIN Conversational Programming | 5/2013