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2 f undamentals of p a th f u nctions – HEIDENHAIN TNC 320 (340 551-01) User Manual

Page 116

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116

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6.2 F

undamentals of P

a

th F

u

nctions

Circles and circular arcs
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›^F˜§pczaF4F˜ p¤˜4"m˜=FOamF˜"˜4a4¤d"˜hp¦FhFm›˜*©˜Fm›FamV˜›^F˜

4a4dF˜4Fm›F˜



^Fm˜©p¤˜zpV"h˜"˜4a4dF:˜›^F˜4pm›pd˜"’’aVm’˜a›˜›p˜pmF˜pO˜›^F˜h"am˜

zd"mF’˜^a’˜zd"mF˜a’˜=FOamF=˜"¤›ph"›a4"dd©˜§^Fm˜©p¤˜’F›˜›^F˜’zam=dF˜

"¨a’˜=¤amV˜"˜˜

9

Direction of rotation DR for circular movements
O˜"˜4a4¤d"˜z"›^˜^"’˜mp˜›"mVFm›a"d˜›"m’a›apm˜›p˜"mp›^F˜

4pm›p¤˜FdFhFm›:˜Fm›F˜›^F˜=aF4›apm˜pO˜p›"›apm˜ 9

dp4c§a’F˜=aF4›apm˜pO˜p›"›apm9˜ J

p¤m›F4dp4c§a’F˜=aF4›apm˜pO˜p›"›apm9˜ ‚

Spindle axis

Main plane

Z

XY

:˜"d’p

:˜:˜

Y

ZX

:˜"d’p

:˜!:˜

X

YZ

:˜"d’p

:˜ :˜!

X

Y

X

Y

CC

X

CC

Y

CC

CC

CC

DR–

DR+

X

Z

Y