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. . x y – HEIDENHAIN TNC 407 (280 580) User Manual User Manual

Page 155

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TNC 425/TNC 415 B/TNC 407

5–56

5

Programming Tool Movements

5.6

Contours – FK Free Contour Programming

Fig. 5.48:

Auxiliary points on a free arc

5

.

.

.

X

Y

P2

5

15

5

20

P1

C1

X

Y

P3X
P3Y

P1X
P1Y

FC

P2X
P2Y

CC

Auxiliary points

Auxiliary points are entered for arcs in the same way as for straight lines.
You can program a third auxiliary point for an arc.

Example for exercise: Auxiliary points on an arc

Known data for circular arc C1:

Auxiliary points P1, P2 with the coordinates for

P1 : P1X

=

5

mm

P1Y

=

5

mm

P2 : P2X

= 15

mm

P2Y

= 20

mm

For clarity, the drawing contains only the data
described above.

Initiate the dialog:

Circular arc without tangential connection

Enter the coordinates of the first auxiliary point:

AUXILIARY POINT 1 X-COORDINATE ?

Enter the X-coordinate of the auxiliary point P1, P1X = 5 mm.