
PRECIZIA ASAMBLARII PIESELOR. DIMENSIUNI ABATERI TOLERANTE
Presentation
•
Professional Development
•
10th Grade
•
Practice Problem
•
Hard
Razvan Robotin
Used 2+ times
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10 Slides • 0 Questions
1
MODUL I
MĂSURĂRI TEHNICE
2
Precizia asamblării pieselor.
Dimensiuni, abateri, toleranțe
Ajustaje
3
AJUSTAJE
1
𝑁𝐷 = 𝑁𝑑= N
𝐴𝑗𝑢𝑠𝑡𝑎𝑗 = 𝑎𝑠𝑎𝑚𝑏𝑙𝑎𝑟𝑒 𝑎 𝑑𝑜𝑢ă 𝑝𝑖𝑒𝑠𝑒
𝑃𝑖𝑒𝑠𝑎 𝑐𝑢𝑟𝑝𝑖𝑛𝑠ă = 𝑎𝑟𝑏𝑜𝑟𝑒𝑙𝑒, 𝑠𝑒 𝑛𝑜𝑡𝑒𝑎𝑧ă 𝑐𝑢 𝑙𝑖𝑡𝑒𝑟𝑒 𝑚𝑖𝑐𝑖
𝑁𝑑 - dimensiunea nominală a unui arbore
𝑃𝑖𝑒𝑠𝑎 𝑐𝑢𝑟𝑝𝑖𝑛𝑧ă𝑡𝑜𝑎𝑟𝑒 = 𝑎𝑙𝑒𝑧𝑎𝑗, 𝑠𝑒 𝑛𝑜𝑡𝑒𝑎𝑧ă 𝑐𝑢 𝑙𝑖𝑡𝑒𝑟𝑒 𝑚𝑎𝑟𝑖(𝑚𝑎𝑗𝑢𝑠𝑐𝑢𝑙𝑒)
𝑁𝐷 - dimensiunea nominală a unui alezaj
4
TIPURI DE AJUSTAJE
D – diametrul alezajului (găurii)
d – diametrul arborelui
Dacă D > d avem un ajustaj cu joc, iar diferența lor
reprezintă jocul efectiv:
J = D - d
Dacă D < d avem un ajustaj cu strângere, iar diferența
lor reprezintă strângerea efectivă:
S = d - D
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6
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AJUSTAJ CU JOC
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AJUSTAJ CU STRÂNGERE
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10
MODUL I
MĂSURĂRI TEHNICE
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