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Straight line lp, Circular path cp around pole cc, 5 p a th cont ours—p olar coor dinat e s – HEIDENHAIN iTNC 530 (340 49x-03) User Manual

Page 251

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HEIDENHAIN iTNC 530

251

6.5 P

a

th Cont

ours—P

olar Coor

dinat

e

s

Straight line LP

The tool moves in a straight line from its current position to the
straight-line end point. The starting point is the end point of the
preceding block.

8

Polar coordinates radius PR:

Enter the distance

from the pole CC to the straight-line end point.

8

Polar coordinates angle PA:

Angular position of the

straight-line end point between –360° and +360°.

The sign of PA depends on the angle reference axis:

„

Angle from angle reference axis to PR is counterclockwise: PA>0

„

Angle from angle reference axis to PR is clockwise: PA<0

Example NC blocks

Circular path CP around pole CC

The polar coordinate radius PR is also the radius of the arc. It is defined
by the distance from the starting point to the pole CC. The last
programmed tool position before the CP block is the starting point of
the arc.

8

Polar-coordinates angle PA:

Angular position of the

arc end point between –5400° and +5400°

8

Direction of rotation DR

Example NC blocks

X

Y

45

25

60°

60°

30

CC

12 CC X+45 Y+25

13 LP PR+30 PA+0 RR F300 M3

14 LP PA+60

15 LP IPA+60

16 LP PA+180

X

Y

25

25

R20

CC

18 CC X+25 Y+25

19 LP PR+20 PA+0 RR F250 M3

20 CP PA+180 DR+

For incremental coordinates, enter the same sign for DR
and PA.