HEIDENHAIN TNC 360 User Manual - Manual (Page 86)

TNC 360 5-2
5 Programming Tool Movements
Fig. 5.1: A contour consists of a combination of straight lines and
circular arcs
Fig. 5.2: Contour elements are programmed and executed in sequence
X
Y
L
L
CC
C
L
L
5.1 General Information on Programming Tool Movements
A tool movement is always programmed as if the
tool is moving and the workpiece is stationary.
Always pre-position the tool at the beginning of a part program to prevent the possibility of damaging the tool or
workpiece.
Path functions
Each element of the workpiece contour is entered
separately using path functions. The various path
functions produce:
• Straight lines
• Circular arcs
You can also program a combination of the two
(helical paths).
The contour elements are executed in sequence to
machine the programmed contour.