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Circle g06 with tangential connection – HEIDENHAIN TNC 620 (73498x-02) ISO programming User Manual

Page 192

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Programming: Programming contours

6.4

Path contours - Cartesian coordinates

6

192

TNC 620 | User's Manual for DIN/ISO Programming | 5/2013

Circle G06 with tangential connection

The tool moves on an arc that starts tangentially to the previously
programmed contour element.

A transition 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

G06 block. This requires at

least two positioning blocks.

Coordinates of the arc end point, and if
necessary:

Feed rate F

Miscellaneous function M

Example NC blocks

N70 G01 G41 X+0 Y+25 F300 M3 *
N80 X+25 Y+30 *
N90 G06 X+45 Y+20 *
G01 Y+0 *

A tangential arc is a two-dimensional operation:
the coordinates in the

G06 block and in the contour

element preceding it must be in the same plane of
the arc!