03. Merni sistem
Transcript of 03. Merni sistem
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Merni sistem kod NU
strugova
PROJEKTOVANJE
TEHNOLOŠKIH SISTEMA
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Kod NU strugova sa dve upravljane ose nosač alata ostvaruje dve
vrste kretanja i to:- u pravcu uzdužne ose struga (“Z” osa)- u pravcu poprečnom na poprečnu osu struga (“X osa”)
0 +Z- Z
ka s teznoj g lavi
od stezne g lave
0-
X+
X
od radnogpredmeta
ka radnom predmetu
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- X
+ X
+ Z+ Z
+ X
- X
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U procesu programiranja NU strugova postoje dva merna sistema:
- Apsolutni sistem merenja (kod koga se sva merenja vrše od jedne tačke)
- Inkrimentalni sistem merenja (kod koga se merenje vrši od tačke do tačke)
Y
X
Z
Y
ZX
Z
X
Y
-ZZ -Z
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Apsolutni sistem
merenja
Inkrimentalnisistem
merenja
X
Y
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Apsolutni sistem merenja
tačka X Z
1 -3 3
2 -4 -2
3 -3 -4
4 -1 2
5 1 -3
6 1 1
7 3 -3
8 4 4
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Inkrimentalni sistem merenja
tačka X Z
1 -3 3
2 -1 -5
3 1 -2
4 2 6
5 2 -5
6 0 4
7 2 -4
8 1 7
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Apsolutni sistem merenja
tačka X Z
1 0 0
2 1 0
3 1.5 -1
4 1.5 -2
5 2 -2
6 2 -4
7 3 -4
8 3 -7
9 2 -7
10 2 -10
11 0 -10
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Inkrimentalni sistem merenja
tačka X Z
1 0 0
2 1 0
3 0.5 -1
4 0 -1
5 0.5 0
6 0 -2
7 1 0
8 0 -3
9 -1 0
10 0 -3
11 -2 0