HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 17)

18
Path Functions
Path functions
Straight line
Chamfer between two
straight lines
Corner rounding
Circle center or pole for
polar coordinates
Circular path around the
circle center CC
Circular path with
known radius
Circular path with
tangential connection to
previous contour
FK Free Contour
Programming
Page 19
Page 20
Page 22
Page 21
Page 21
Page 23
Page 20
Page 25
Path Functions for Positioning Blocks
See „Programming: Programming contours“.
Programming the Direction of Traverse
Regardless of whether the tool or the workpiece is actually moving,
you always program as if the tool is moving and the workpiece is
stationary.
Entering the Target Positions
Target positions can be entered in Cartesian or polar coordinates –
either as absolute or incremental values, or with both absolute and
incremental values in the same block.
Entries in the Positioning Block
A complete positioning block contains the following data:
• Path function
• Coordinates of the contour element end points (target position)
• Radius compensation RR/RL/R0
• Feed rate F
• Miscellaneous function M
Before you execute a part program, always pre-position the tool to
prevent the possibility of damaging the tool or workpiece!