A multiple disc clutch is used to operate the speed regulating gears of lathe. If the torque delivered by the clutch is 400 lbs. in.,evaluate the number of discs are necessary and the max. force acting on them while the clutch is in operation. Limit the disc friction surface sizes between 5 in. and 3 in. Take the factor of safety as 2 , coefficient of friction varies from 0.150 to 0.200, and the pressure as (100-24/100) psi.

A multiple disc clutch is used to operate the speed regulating gears of lathe. If the torque delivered by the clutch is 400 lbs. in.,evaluate the number of discs are necessary and the max. force acting on them while the clutch is in operation. Limit the disc friction surface sizes between 5 in. and 3 in. Take the factor of safety as 2 , coefficient of friction varies from 0.150 to 0.200, and the pressure as (100-24/100) psi.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.90RP: The screw of the clamp has a square thread of pitch 0.16 in. and a mean diameter of 0.6 in. The...

See similar textbooks

Similar questions

The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a mean radius of 75 mm. The static and kinetic coefficients of friction between the gear and the screw are 0.12 and 0.06, respectively. The input torque applied to the screw is C0=10Nm. Assuming constant speed operation, determine the output torque C1 acting on the gear.
The screw of the clamp has a square thread of pitch 0.16 in. and a mean diameter of 0.6 in. The coefficient of static friction between the threads is 0.4. Determine (a) the torque C0 that must be applied to the screw in order to produce a 28-lb clamping force at A; and (b) the torque required to loosen the clamp.
The square-threaded screw 0f the C-clamp has a mean diameter of 8 mm and a pitch of 1.6 mm. The coefficient of static friction between the threads is 0.2. If the torque C=1.50Nm is used to tighten the clamp, determine (a) the clamping force; and (b) the torque required to loosen the clamp.
A multiple disc clutch is used to operate the speed regulating gears of lathe. If the torque delivered by the clutch is 400 lbs.in , evaluate the number of discs are necessary and the max. force acting on them while the clutch is in operation. Limit the disc friction surface sizes between 5 in. and 3 in. Take the factor of safety as 2 , coefficient of friction varies from 0.150 to 0.200, and the pressure as (100-6/100)psi.
A multiple disc clutch is used to operate the speed regulating gears of lathe. If the torque delivered by the clutch is 400 lbs.in , evaluate the number of discs are necessary and the max. force acting on them while the clutch is in operation. Limit the disc friction surface sizes between 5 in. and 3 in. Take the factor of safety as 2 , coefficient of friction varies from 0.150 to 0.200 , and the pressure as 99.76 psi.
A multiple disc clutch is used to operate the speed regulating gears of lathe. If the torque delivered by the clutch is 400 lbs. in.,evaluate the number of discs are necessary and the max. force acting on them while the clutch is in operation. Limit the disc friction surface sizes between 5 in. adn 3 in. Take the factor of safety as 2 , coefficient of friction varies from 0.150 to 0.200, and the pressure as (100-24/100) psi.
A cone clutch with a cone angle of 12° transmits 53 kW at 1300 rpm. The coefficient of friction of linings is 0.16. Determine the axial spring force necessary to engage the clutch in N if the mean diameter of the active conical sections is 250 mm.
The disc clutch has a pair of mating friction surfaces, with an outer diameter of 350 mm and an inner diameter of 250 mm. The average value of the coefficient of friction is 0.25, and the operating force is 5 kN. Find the torque capacity when the clutch is new, the maximum pressure and the torque capacity after a sufficiently long operating period.
Q: A single plate clutch, effective on both sides, is required to transmit 20 kW at 2500 rpm. Determine the outer and inner diameters of frictional surface if the coefficient of friction is 0.26 and check their with wear rating. The maximum pressure is not to exceed 0.002 N/mm?. Also, determine the axial thrust to be provided by springs. Clutch plate with friction lining ‘Body Bl X Pressure plate Hub Thrust Springs Flywheel Crank shaft Bl Driven shaft riving shaft 4 Release lever (withdrawl finger) O Knife edge
A centrifugal clutch is to be designed to transmit 15 kW at 900 r.p.m. The shoes are four in number. The speed at which the engagement begins is 3/4th of the running speed. The inside radius of the pulley rim is 150 mm. The coefficient of friction may be taken as 0.25. Determine: 1. mass of the shoes, and 2. size of the shoes.
A cone clutch has cone elements at an angle of 12o. The clutch transmit 25 HP at a speed of 1200 rpm. The mean diameter of the conical friction section is 16 in and the coefficient of friction is 0.35. Find the axial force needed to engage the clutch.
A multiple-disk clutch with 17 disks, 8 disks turning with one shaft and 9 with the other shaft, is rated at 25 hp at 500 rpm. The outside and inside diameters of the disks are 5½ and 2½ in., respectively. The coefficient of friction is 0.2. (a) Determine the axial force required to transmit the rated torque and determine the pressure between the disks.