HEIDENHAIN TNC 320 - Circular path G12;G13;G15 around pole I, J; Circle G16 with tangential connection

Programming Contours | Path contours – Polar coordinates
6
276
HEIDENHAIN | TNC 320 | ISO Programming User's Manual | 10/2017
Circular path G12/G13/G15 around pole I, J
The polar coordinate radius R is also the radius of the arc. R is
defined by the distance from the starting point to the pole I, J. The
last programmed tool position will be the starting point of the arc.
Direction of rotation
In clockwise direction: G12
In counterclockwise direction: G13
Without programmed direction: G15. The control traverses the
circular arc with the last programmed direction of rotation.
Polar-coordinates angle H: Angular position of
the arc end point between –99999.9999° and
+99999.9999°
Example
N180 I+25 J+25*
N190 G11 G42 R+20 H+0 F250 M3*
N200 G13 H+180*
Circle G16 with tangential connection
The tool moves on a circular path, starting tangentially from a
preceding contour element.
Polar coordinate radius R: Distance between
the arc end point and the pole I, J
Polar coordinate angle H: Angular position of
the arc end point.
The pole is not the center of the contour arc!
Example
N120 I+40 J+35*
N130 G01 G42 X+0 Y+35 F250 M3*
N140 G11 R+25 H+120*
N150 G16 R+30 H+30*
N160 G01 Y+0*