EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Chapter 4, Problem 4.60P
(a)
To determine
The graph between the coefficient of the friction versus change in the internal diameter for 20% reduction in height.
b)
To determine
The graph between the coefficient of the friction versus change in the internal diameterfor 40% reduction in height.
c)
To determine
The graph between the coefficient of the friction versus change in the internal diameter for 40% reduction in height.
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Explain in detail the different types of friction?
A 915 mm diameter driving pulley is used to drive 1,220 mm pulley. The center to center distance between the two pulleys is 3.5 mm and the output of the driven shaft is 85 HP. If a leather belt is used with a belt speed of 1,300 m/min,
coefficient of friction is 0.28, percent slip is 1.5% on each pulley, and loss due to friction on each shaft is 6%, calculate:
(a) The rpm of each shaft: Ans. N1 = 459.13 rpm; N2 = 344.35 rpm
(b) Difference in belt tension: Ans.(F1 - F2) = 3.11 kN
(c) Size of 9.5 mm thick leather belt: Ans. b = 0.2475 mm; L = 10.6792 m
Note: Assume open belt if not stated and assume that pulleys are of the same material. As such, f is the same and the smaller pulley is the basis of design calculations. Consider the 6 % frictional loss in your belt tension calculations.
Explain the main objective of the Dimensioning of a Cylindrical Press Fit Joint. Emphasize on the role of the surface pressure.
Chapter 4 Solutions
EBK MANUFACTURING PROCESSES FOR ENGINEE
Ch. 4 - Prob. 4.1QCh. 4 - Prob. 4.2QCh. 4 - Prob. 4.3QCh. 4 - Prob. 4.4QCh. 4 - Prob. 4.5QCh. 4 - Prob. 4.6QCh. 4 - Prob. 4.7QCh. 4 - Prob. 4.8QCh. 4 - Prob. 4.9QCh. 4 - Prob. 4.10Q
Ch. 4 - Prob. 4.11QCh. 4 - Prob. 4.12QCh. 4 - Prob. 4.13QCh. 4 - Prob. 4.14QCh. 4 - Prob. 4.15QCh. 4 - Prob. 4.16QCh. 4 - Prob. 4.17QCh. 4 - Prob. 4.18QCh. 4 - Prob. 4.19QCh. 4 - Prob. 4.20QCh. 4 - Prob. 4.21QCh. 4 - Prob. 4.22QCh. 4 - Prob. 4.23QCh. 4 - Prob. 4.24QCh. 4 - Prob. 4.25QCh. 4 - Prob. 4.26QCh. 4 - Prob. 4.27QCh. 4 - Prob. 4.28QCh. 4 - Prob. 4.29QCh. 4 - Prob. 4.30QCh. 4 - Prob. 4.31QCh. 4 - Prob. 4.32QCh. 4 - Prob. 4.33QCh. 4 - Prob. 4.34QCh. 4 - Prob. 4.35QCh. 4 - Prob. 4.36QCh. 4 - Prob. 4.37QCh. 4 - Prob. 4.38QCh. 4 - Prob. 4.39QCh. 4 - Prob. 4.40QCh. 4 - Prob. 4.41QCh. 4 - Prob. 4.42QCh. 4 - Prob. 4.43QCh. 4 - Prob. 4.44QCh. 4 - Prob. 4.45QCh. 4 - Prob. 4.46QCh. 4 - Prob. 4.47QCh. 4 - Prob. 4.48QCh. 4 - Prob. 4.49QCh. 4 - Prob. 4.50QCh. 4 - Prob. 4.51QCh. 4 - Prob. 4.52QCh. 4 - Prob. 4.53QCh. 4 - Prob. 4.54QCh. 4 - Prob. 4.55QCh. 4 - Prob. 4.56QCh. 4 - Prob. 4.57PCh. 4 - Prob. 4.58PCh. 4 - Prob. 4.59PCh. 4 - Prob. 4.60PCh. 4 - Prob. 4.61PCh. 4 - Prob. 4.62PCh. 4 - Prob. 4.63PCh. 4 - Prob. 4.64PCh. 4 - Prob. 4.65PCh. 4 - Prob. 4.66PCh. 4 - Prob. 4.67PCh. 4 - Prob. 4.68PCh. 4 - Prob. 4.69PCh. 4 - Prob. 4.70PCh. 4 - Prob. 4.71P
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- 2) Drawing: A round rod of annealed 302 stainless steel (K = 1300 MPa and n = 0.3) is being drawn from a diameter of 15 mm to a diameter of 12 mm at a speed 0.25 m/s, using a semidie angle of 8º. a. Calculate the percentage reduction, the applied force due to ideal deformation, friction, and inhomogeneous deformation. Assume coefficient of friction of 0.1. b. Calculate the required power, process efficiency, and the die pressure at the exit.arrow_forwardExplain (i) Angle of repose with a Neat diagram (ii) Impending Motion and Limiting Frictionarrow_forward(6) A double square-threaded power screw transmits 1,800in-lb of torque and raises a machine head; the head is guided by linear slides with anti-friction bearings, and thus no appreciable friction is involved. If the coefficient of friction for the threads is 0.1, find: (a) the load that can be raised if the screw has 2 threads/in and an outside diameter of 21/2in; (b) if a 4000-lb load is to be lowered, what torque must the screw transmit? (c) if the power screw of rotates 10 rpm, what is the linear speed of the driven head in feet per minute?arrow_forward
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