Page 407 - Analysis and Design of Machine Elements
P. 407
Couplings and Clutches
Bolt diameter d M6 M8 M10 M12 M16 M20 385
Shank diameter d /mm 7 9 11 13 17 21
0
Figure P13.3 Illustration for Design Problem 2.
−1
3 A multiple friction clutch transmits a power of 1.7 kW at a speed of n = 500 r min .
The friction discs are made of tempered steel with coefficient of friction f = 0.05, and
the allowable pressure is [p] = 0.6∼0.8 MPa. The friction surface has inner diame-
ter D = 80 mm, and outer diameter D = 120 mm. The axial force on the friction
i o
disc is F = 2000 N. Assume the service factor is 1.5. Decide the number of discs
required.
4 Explain the reason for a gear coupling in Figure P13.4 accommodating parallel mis-
alignment and angular misalignment.
Figure P13.4 Illustration for Design Problem 4.
Figure P13.5 Illustration for Structure Design Problem 2.
