beautypg.com

Circular path c around circle center cc, 4 p a th cont ours—car te sian coor dinat e s – HEIDENHAIN iTNC 530 (340 49x-04) User Manual

Page 254

background image

254

6 Programming: Programming Contours

6.4 P

a

th Cont

ours—Car

te

sian Coor

dinat

e

s

Circular path C around circle center CC

Before programming a circular path C, you must first enter the circle
center CC. The last programmed tool position before the C block is
used as the circle starting point.

Move the tool to the circle starting point.

Coordinates

of the circle center

Coordinates

of the arc end point

Direction of rotation DR, and if necessary:

Feed rate F

Miscellaneous function M

Example NC blocks

Full circle

For the end point, enter the same point that you used for the starting
point.

S

E

X

Y

CC

X

Y

25

45

25

CC

DR+

DR–

The TNC normally makes circular movements in the active
working plane. If you program circular arcs that do not lie
in the active working plane, for example C Z... X... DR+
with a tool axis Z, and at the same time rotate this
movement, then the TNC moves the tool in a spatial
circular arc, which means a circular arc in 3 axes.

5 CC X+25 Y+25

6 L X+45 Y+25 RR F200 M3

7 C X+45 Y+25 DR+

The starting and end points of the arc must lie on the
circle.

Input tolerance: up to 0.016 mm (selected with MP7431).

Smallest possible circle that the TNC can traverse:
0.0016 µm.