Circular Arc Ct With Tangential Transition - HEIDENHAIN TNC 620 User Manual

Programming contours | Path contours — Cartesian coordinates

Circular arc CT with tangential transition

The tool moves on an arc that connects tangentially to the previously
programmed contour element.
A connection between two contour elements is called tangential
when there is no kink or corner at the intersection between the two
contours—the transition is smooth.
The contour element to which the tangential arc connects must be
programmed immediately before the CT block. This requires at least
two positioning blocks.
Coordinates of the arc end point, and if
necessary:
Feed F
Miscellaneous function M
7 L X+0 Y+25 RL F300 M3
8 L X+25 Y+30
9 CT X+45 Y+20
10 L Y+0
A tangential arc is a two-dimensional operation: the
coordinates in the CT block and in the contour element
preceding it must be in the same plane of the arc!
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022
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