User's Manual TNC 360 (from 259 900-11) - heidenhain

5 Programming Tool Movements
5.4 Path Contours – Cartesian Coordinates
TNC 360
Radius compensation in circular paths
You cannot begin radius compensation in a circle block. It must be
activated beforehand in a line block.
Circles in the main planes
When you program a circle, the TNC assigns it to
one of the main planes. This plane is automatically
defined when you set the spindle axis during TOOL
CALL.
Circle Center CC
Spindle axis
Z
Y
X
Fig. 5.20: Defining the spindle axis also defines the main plane
Y
Y
Fig. 5.21: Circle center CC
Main plane
You can program circles that do not lie parallel to a main plane by using Q parameters. See Chapter 7.
If you program an arc using the C path function key, you must first define
the circle center CC by:
• entering the Cartesian coordinates of the circle center
• using the circle center defined in an earlier block
• capturing the actual position
You can define the last programmed position as circle center CC by
entering an empty CC block.
Duration of a circle center definition
A circle center definition remains effective until a new circle center is
defined.
CC
X
XY
ZX
YZ
X
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