TNC 426/TNC 425/TNC 415 B/TNC 407
5 - 2
5
Programming Tool Movements
5.1 General Information on Programming Tool Movements
Tool movements are always programmed as
if the tool moves and the workpiece remains
stationary.
Before running a part program, always pre-position the tool to prevent the possibility of damaging it or the
workpiece. Radius compensation and a path function must remain active.
Example NC block: N30 G00 G40 G90 Z+100 *
Path functions
Each element of the workpiece contour is entered
separately using path functions.
You enter:
• Straight lines
• Circular arcs
You can also program a combination of the two
contour elements (helical paths).
The contour elements are executed in sequence to
machine the programmed contour.
Fig. 5.1: A contour consists of straight lines and circular arcs
X
Y
Fig. 5.2: Contour elements are programmed and executed in sequence
G 01
G01
I, J
G02
G01
G01
