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C ircle – HEIDENHAIN TNC 407 (280 580) User Manual User Manual

Page 121

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TNC 425/TNC 415 B/TNC 407

5-22

5

Programming Tool Movements

Fig. 5.30:

Coordinates of a circular arc

5.4

Path Contours - Cartesian Coordinates

Fig. 5.28:

Circular path from

S

to

E

around CC

CC

E

S

Y

X

CC

E

S

Y

CC

X

CC

X

S

X

E

Y

E

Y

S

Fig. 5.29:

Full circle around CC with a
C block

Y

X

CC

S

E

Circular path C around the circle center CC

Prerequisites

The circle center CC must have been previously defined in the program.
The tool is located at the circle starting position

S

.

Input

• Arc end point
• Direction of rotation DR

The starting and end points of the arc must lie on the circle.
Input tolerance: up to 0.016 mm (selectable with MP 7431).

• To program a full circle, enter the same point for

the end point as for the start point in a C block.