curs 1 - profesori · pdf file– informatii geometrice (marime, forma, aspect) ......
TRANSCRIPT
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Grafica inginereasca
univ
ersi
tate
a di
n B
acau
curs 1
univ
ersi
tate
a di
n B
acau
2009 dr. ing. Ionel Crinel Raveica
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curs
• nr de ore – curs– curs
– laborator
• forma de verificare
• cerinte
• bibliografie suplimentara
2009 dr. ing Ionel Crinel Raveica
• bibliografie suplimentara
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Intrebari?
• Care e obiectul de activitate?• La ce foloseste disciplina?
2009 dr. ing Ionel Crinel Raveica
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Care e obiectul de activitate?
2009 dr. ing Ionel Crinel Raveica
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Care e obiectul de activitate?
2009 dr. ing Ionel Crinel Raveica
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2009 dr. ing Ionel Crinel Raveica
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Continut
• Scop, conventii, standarde• Scop, conventii, standarde• Ce este un desen tehnic ?• Desen ingineresc
- vederi, sectiuni tipuri de linii- conventii pentru dispunerea sectiunilor si vederilor- tipuri de desene
• Dimensiune si toleranta
2009 dr. ing Ionel Crinel Raveica
- tipuri de tolerante- tolerante generale, aiatemul ISO de tolerante
• Materiale- proprietati- categorii
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Ce este un desen ?
• un document ce comunica o descriere precisa a unui obiect• descrierea consta din imagini, cuvinte, numere si simboluri• din puct de vedere al informatiilor un desen include:• din puct de vedere al informatiilor un desen include:
– informatii geometrice (marime, forma, aspect)– relatii functionale– tolerante care sa asigure o buna functionalitate a pieselor– materiale acoperiri de protectie– informatii de documentare (codificare,varianta revizuita etc)
• Un desen ingineresc trebuie sa defineasca complet o piesa• Fiecare specificatie trebuie sa poata fi masurabila• Desenul ingineresc afecteaza toate diviziunile organizatorice
2009 dr. ing Ionel Crinel Raveica
• Desenul ingineresc afecteaza toate diviziunile organizatorice ale intreprinderii
• Desenul ingineresc are un impact major asupra costului
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Exactitatea desenelor
• Inexactitatea desenelor poate conduce la pierderi de timp si energie:la pierderi de timp si energie:
• timp pentru corectarea erorilor din desen
• pierderi de material
• timp de lucru
2009 dr. ing Ionel Crinel Raveica
• timp de lucru
• incarcarea inutila a masinii
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2009 dr. ing Ionel Crinel Raveica
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tipuri de desene
2009 dr. ing Ionel Crinel Raveica
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2009 dr. ing Ionel Crinel Raveica
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Tipuri de linii
2009 dr. ing Ionel Crinel Raveica
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Tipuri de linii
2009 dr. ing Ionel Crinel Raveica
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Exemplu
2009 dr. ing Ionel Crinel Raveica
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Formate de desen
2009 dr. ing Ionel Crinel Raveica
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Scari de reprezentare
2009 dr. ing Ionel Crinel Raveica
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Exemplu
2009 dr. ing Ionel Crinel Raveica
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Reprezentarea prin proiectii
2009 dr. ing Ionel Crinel Raveica
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2009 dr. ing Ionel Crinel Raveica
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metoda europeana
2009 dr. ing Ionel Crinel Raveica
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metoda americana
2009 dr. ing Ionel Crinel Raveica
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exemplu
2009 dr. ing Ionel Crinel Raveica
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aplicatie
2009 dr. ing Ionel Crinel Raveica
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2009 dr. ing Ionel Crinel Raveica
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alegerea vederii principale
2009 dr. ing Ionel Crinel Raveica
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Vederi particulare
2009 dr. ing Ionel Crinel Raveica
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Vederi particulare
2009 dr. ing Ionel Crinel Raveica
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Vederi particulare
2009 dr. ing Ionel Crinel Raveica
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Vederi particulare
2009 dr. ing Ionel Crinel Raveica
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Proiectii simetrice
Proiectie pe sfert
2009 dr. ing Ionel Crinel RaveicaProiectie pe jumatate
Proiectie pe sfert
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Tesiri plane ale suprafetelorcilindrice
2009 dr. ing Ionel Crinel Raveica
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Suprafete striate
2009 dr. ing Ionel Crinel Raveica