HEIDENHAIN TNC 320 (340 551-01) - Manual (Page 137)

˜ ˜¢¬ 137
6.5 P
a
th Cont
ours—P
olar Coor
dinat
e
s
Straight line LP
^F˜›ppd˜hp¦F’˜am˜"˜’›"aV^›˜damF˜Oph˜a›’˜4¤Fm›˜zp’a›apm˜›p˜›^F˜
’›"aV^›_damF˜Fm=˜zpam›˜^F˜’›"›amV˜zpam›˜a’˜›^F˜Fm=˜zpam›˜pO˜›^F˜
zF4F=amV˜*dp4c
8 Polar coordinates radius PR:
˜ m›F˜›^F˜=a’›"m4F˜
Oph˜›^F˜zpdF˜ ˜›p˜›^F˜’›"aV^›_damF˜Fm=˜zpam›
8 Polar coordinates angle PA: ˜ mV¤d"˜zp’a›apm˜pO˜›^F˜
’›"aV^›_damF˜Fm=˜zpam›˜*F›§FFm˜J–¬@˜"m=˜‚–¬@
^F˜’aVm˜pO˜ ˜=FzFm=’˜pm˜›^F˜"mVdF˜FOFFm4F˜"¨a’9
„ mVdF˜Oph˜"mVdF˜FOFFm4F˜"¨a’˜›p˜˜a’˜4p¤m›F4dp4c§a’F9˜ Y¬
„ mVdF˜Oph˜"mVdF˜FOFFm4F˜"¨a’˜›p˜˜a’˜4dp4c§a’F9˜ e¬
Example NC blocks
Circular path CP around pole CC
^F˜zpd"˜4pp=am"›F˜"=a¤’˜˜a’˜"d’p˜›^F˜"=a¤’˜pO˜›^F˜"4˜›˜a’˜=FOamF=˜
*©˜›^F˜=a’›"m4F˜Oph˜›^F˜’›"›amV˜zpam›˜›p˜›^F˜zpdF˜ ˜^F˜d"’›˜
zpV"hhF=˜›ppd˜zp’a›apm˜*FOpF˜›^F˜ ˜*dp4c˜a’˜›^F˜’›"›amV˜zpam›˜pO˜
›^F˜"4
8 Polar-coordinates angle PA:
˜ mV¤d"˜zp’a›apm˜pO˜›^F˜
"4˜Fm=˜zpam›˜*F›§FFm˜JQT¬¬@˜"m=˜‚QT¬¬@
8 Direction of rotation DR
Example NC blocks
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
45
25
60°
60°
30
CC
18 CC X+25 Y+25
19 LP PR+20 PA+0 RR F250 M3
20 CP PA+180 DR+
p˜am4FhFm›"d˜4pp=am"›F’:˜Fm›F˜›^F˜’"hF˜’aVm˜Op˜ ˜
"m=˜ 
X
Y
25
25
R20
CC