3 cont our appr oac h and depar tur e – HEIDENHAIN TNC 320 (340 551-01) User Manual
Page 122
122
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6.3 Cont
our Appr
oac
h
and Depar
tur
e
Approaching on a circular path with tangential
connection: APPR CT
^Fppdhp¦Fpm""aV^damFOph^F"amVzpam
p"m
"¤¨ada"©zpam
^Fmhp¦Fp^FOa4pmp¤zpam Opddp§amV
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^F"4Oph
p a=FFhamF=^p¤V^^F"=a¤"m=^F
4FmF"mVdF
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"¤ph"a4"dd©=Fa¦F=Oph^Fppdz"^Op^FOa4pmp¤FdFhFm
8
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8
maa"F^F=a"dpV§a^^F
cF©"m= pOcF©9
8
pp=am"FpO^FOa4pmp¤zpam
8
"=a¤pO^F4a4¤d""4
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=aF4apm=FOamF=*©^F"=a¤4phzFm"apm9 mF
""zpaa¦F¦"d¤F
O^Fppd^p¤d="zzp"4^^F§pczaF4FpzzpaF
p^F"=a¤4phzFm"apm9
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8
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8
"=a¤4phzFm"apmOph"4^amamV
Example NC blocks
Approaching on a circular arc with tangential
connection from a straight line to the contour:
APPR LCT
^Fppdhp¦Fpm""aV^damFOph^F"amVzpam
p"m
"¤¨ada"©zpam
^Fmhp¦Fp^FOa4pmp¤zpam pm"
4a4¤d""4^FOFF="FzpV"hhF=am^F *dp4caamFOOF4
^F"4a4pmmF4F="mVFma"dd©*p^p^FdamF
J
"§Fdd"p
^FOa4pmp¤FdFhFmm4F^FFdamF"Fcmp§m:^F"=a¤^Fm
¤OOa4Fp4phzdFFd©=FOamF^Fppdz"^
8
F"m©z"^O¤m4apmp"zzp"4^^F"amVzpam
8
maa"F^F=a"dpV§a^^F
cF©"m= pOcF©9
8
pp=am"FpO^FOa4pmp¤zpam
8
"=a¤pO^F4a4¤d""4 mF""zpaa¦F¦"d¤F
8
"=a¤4phzFm"apmOph"4^amamV
X
Y
10
20
P
A
RR
P
S
R0
P
H
RR
RR
40
10
CCA=
180°
R10
35
20
7 L X+40 Y+10 RO FMAX M3
zzp"4^
§a^p¤"=a¤4phzFm"apm
8 APPR CT X+10 Y+20 Z-10 CCA180 R+10 RR F100
§a^"=a¤4phz:"=a¤Ks¬
9 L X+20 Y+35
m=zpampO^FOa4pmp¤FdFhFm
10 L ...
F¨4pmp¤FdFhFm
X
Y
10
20
P
A
RR
P
S
R0
P
H
RR
RR
40
10
R10
35
20