SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
10th Edition
ISBN: 9781260163155
Author: BUDYNAS
Publisher: MCG CUSTOM
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Chapter 16, Problem 19P
A cone clutch has D = 12 in, d = 11 in, a cone length of 2.25 in, and a coefficient of friction of 0.28. A torque of 1.8 kip · in is to be transmitted. For this requirement, estimate the actuating force and maximum pressure by both models.
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Q 4. A cone clutch using semirigid molded asbestos has D = 12 in, d = 11 in, a cone length of 2.23 in, s. A torque of 1.8 kip in is to be transmitted. For this requirement, estimate the actuating force and pressure by both models
3) A multiple disc clutch, steel on bronze, is to transmit 7 kW at 1000 rpm. The inner radius of thecontact is 50 mm and outer radius of the contact is 75 mm. The clutch operates in oil with an expected coefficient of "0.1". The average allowable pressure is 0.35 N/mm2. Determine the total number of steel and bronze discs.
A leather faced cone clutch transmits power at 500 rpm. The semi-coneangle a is 12.5°. The mean diameter of the clutch is 300 mm, while the facewidth of the contacting surface of the friction lining is 100 mm. The coefficientof friction is 0.2 and the maximum intensity of pressure is limited to 0.07N/mm2. Calculate the force to engage the clutch and the power transmittingcapacity.
Chapter 16 Solutions
SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
Ch. 16 - The figure shows an internal rim-type brake having...Ch. 16 - For the brake in Prob. 16-1, consider the pin and...Ch. 16 - In the Figure for Prob. 16-1, the inside rim...Ch. 16 - The figure shows a 400-mm-diameter brake drum with...Ch. 16 - The block-type hand brake shown in the figure has...Ch. 16 - Suppose the standard deviation of the coefficient...Ch. 16 - The brake shown in the figure has a coefficient of...Ch. 16 - Prob. 8PCh. 16 - Prob. 9PCh. 16 - Prob. 10P
Ch. 16 - The maximum band interface pressure on the brake...Ch. 16 - The drum for the band brake in Prob. 1611 is 12 in...Ch. 16 - The brake shown in the figure has a coefficient of...Ch. 16 - The figure depicts a band brake whose drum rotates...Ch. 16 - The figure shows a band brake designed to prevent...Ch. 16 - A plate clutch has a single pair of mating...Ch. 16 - A hydraulically operated multidisk plate clutch...Ch. 16 - Prob. 18PCh. 16 - A cone clutch has D = 12 in, d = 11 in, a cone...Ch. 16 - Prob. 20PCh. 16 - A two-jaw clutch has the dimensions shown in the...Ch. 16 - Prob. 22PCh. 16 - Prob. 23PCh. 16 - Prob. 24PCh. 16 - Using the data of Table 16-6, find the mean output...Ch. 16 - When a motor armature inertia, a pinion inertia,...Ch. 16 - For the conditions of Prob. 1627, make a plot of...Ch. 16 - Prob. 29PCh. 16 - Prob. 30PCh. 16 - Prob. 31P
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- A multi-plate clutch has four pairs of frictional surfaces, each of internal diameter 120 mm and external diameter 200 mm. If the coefficient of friction is 0.3 and the uniform pressure condition can be assumed, what is the required spring force when the plates transmit 20 kW at 1400 rpm?arrow_forwardDetermine the principal dimensions of a cone clutch faced with lather to transmit 40 kW at 800 r.p.m. from an electric motor to an air compressor. Sketch a sectional front view of the clutch and provide the main dimensions. Assume that the semi-angle of the cone is 10°, the coefficient of friction is 0.3, mean diameter of cone is (7-10)d, where d is the diameter of the shaft, allowable normal pressure for lather and cast iron is 0.1 to 0.2 N/mm, shear stress 100 N/mm², load factor is 2 and the mean diameter to face width ratio is 6.arrow_forwardA soft cone clutch has a cone pitch angle of 10°, mean diameter of 300 mm and a face width of 100 mm. If the coefficient of friction is 0.2 and has an average pressure of 0.07 N/mm2 for a speed of 500 rpm, find : (a) the force required to engage the clutch; and (b) the power that can be transmitted. Assume uniform wear. [Ans. 1470 N ; 10.4 kW]arrow_forward
- A single plate friction clutch with both sides of plate being effective is used to transmit power at an engine speed of 200rpm. It has outer and inner radii 10cm and 8cm respectively. Find maximum power transmitted and the corresponding axial thrust, if the maximum intensity of pressure is not to exceed 0.08N/mm2 . Assume coefficient of friction as 0.25.arrow_forwardA conical clutch has an included angle of 105°. The outer and inner diameters are 110mm and 40 mm, respectively, and the coefficient of friction is 0·35. Given the axialforce is 1200 N, determine the torque and power that can be transmitted at 600 rev/min,by each of the two theories:(a) The uniform pressure theory. 8(b) The uniform wear theoryarrow_forwardTwo pulleys, one 650 mm diameter and the other 400 mm diameter, on parallel shafts 1.5 m apart are connected by a flat belt. Find the length of the belt required and the angle of contact between the belt and each pulley. What power can be transmitted by the belt when the larger pulley rotates at 1200 rev/min, if the maximum permissible tension in the belt is 10 kN, and the coefficient of friction between the belt and pulley is 0.05? give proper explaination and dont give handwritten solution.arrow_forward
- A multiplate clutch has three pairs of contact surfaces. The outer and inner radii of the contact surfaces are 100 mm and 50 mm respectively. The maximum axial spring force is limited to 1 kN. If the coefficient of friction is 0.35 and assuming uniform wear, find the power transmitted by the clutch at 1500 r.p.m.arrow_forwardA conical Clutch transmits rotation from one rotating shaft to another though frictional forces on the conical face. The following data is for a conical clutchInside Diameter 25.0 mmOutside Diameter 100 mmCoefficient of Friction 0.33Axial Force 1000NIncluded angle 100 degreeRotational speed 1500rev/minuteCalculate the Torque and Power that can be transmitted without slipping using both Uniform Pressure Theory and Uniform Wear Theoryarrow_forwardA leather-faced cone clutch has a contact surface with a mean diameter of 15 in. and transinits 20 hy turning at 800 rpm. For a cone angle of 20 degrees and a coefficient of friction 0.30, determine the force required to keep the surface in contact. Ans. 121.5 lb.arrow_forward
- 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.arrow_forwardAn open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of lap are 160° and 210°. The smaller pulley runs at 200 r.p.m. The coefficient of friction between the belt and pulley is 0.25. It is found that the belt is on the point of slipping when 3 kW is transmitted. To increase the power transmitted two alternatives are suggested, namely (i) increasing the initial tension by 10%, and (ii) increasing the coefficient of friction by 10% by the application of a suitable dressing to the belt. Which of these two methods would be more effective? Find the percentage increase in power possible in each case.arrow_forwardQ8 A multi-disk clutch consists of two steel disks with one bronze disk. The inner and outer diameters ofthe contacting surfaces are 200 and 250 mm respectively. The coeffi cient of friction is 0.1 and themaximum pressure between the contacting surfaces is limited to 0.4 N/mm. Assuming uniform weartheory, calculate the required force to engage the clutch and the power transmitting capacity at 720rpm.arrow_forward
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