HEIDENHAIN TNC 620 User Manual page 141

Programming contours | Fundamentals of path functions
Three-dimensional movement
If the NC block contains three coordinates, the control moves the
tool spatially to the programmed position.
Example
L X+80 Y+0 Z-10
Circles and circular arcs
The control moves two machine axes simultaneously on a circular
path relative to the workpiece. You can define a circular movement
by entering the circle center CC .
Use the path functions for circular arcs to program circles in the
working plane. You define the main plane based on the spindle axis
in the TOOL CALL.
Spindle axis
Z
Y
X
Circular motion in another plane
You can also use the Tilt the working plane function or
Q parameters to program circular motions that do not lie in the main
plane.
Further information: "The PLANE function: Tilting the
working plane (option 8)", Page 431
Further information: "Principle and overview of
functions", Page 268
Direction of rotation DR for circular movements
When a circular path has no tangential transition to another contour
element, enter the direction of rotation as follows:
Clockwise direction of rotation: DR-
Counterclockwise direction of rotation: DR+
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022
Main plane
XY, also UV, XV, UY
ZX, also WU, ZU, WX
YZ, also VW, YW, VZ
5
141