HEIDENHAIN TNC 360 ISO Programming - Manual (Page 107)

5-24
5 Programming Tool Movements
TNC 360
Fig. 5.32: The path of a tangential arc depends on the preceding
contour element.
6
Fig. 5.31: The straight line 1 - 2 is connected tangentially to the
circular arc S - E .
5.4 Path Contours - Cartesian Coordinates
1 2
E
S
E
L1
L2
L3
3
1
2
S
0 G
G
1 0 Y
X
9
5
1
0
+/ END
Circular path G06 with tangential connection
The tool moves in an arc that starts at a tangent
with the previously programmed contour.
A transition between two contour elements is
called tangential when one contour element makes
a smooth and continuous transition to the next.
There is no visible corner at the intersection.
Input
Coordinates of the arc end point.
Prerequisites
• The contour element to which the tangential arc
connects with G06 must be programmed
immediately before the G06 block.
• There must be at least two positioning blocks
defining the tangentially connected contour
element before the G06 block.
A tangential arc is a two-dimensional operation: the coordinates in the G06 block and the positioning block before it
should be in the plane of the arc.
To program a circular path G06 with tangential connection:
Circular path with tangential connection.
Enter the coordinates of the arc end point as relative coordinates, for
example X = 50 mm, Y = –10 mm.
If necessary, enter also:
• Radius compensation
• Feed rate
• Miscellaneous function
Resulting NC block: G06 G42 G91 X+50 Y–10 *