SHIGLEY'S MECHANICAL ENG.DESIGN W/CODE
10th Edition
ISBN: 9781260243314
Author: BUDYNAS
Publisher: MCG CUSTOM
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Chapter 15, Problem 9P
To determine
The transmitted load for pinion core.
The transmitted load for gear core.
The transmitted load for pinion case.
The transmitted load for gear case.
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The 247 6-pitch 20° pinion 2 shown in the figure rotates clockwise at 1000 rev/min and is driven at a power of 25 hp. Gears 4, 5, and 6 have 24, 36, and 144 teeth, respectively. What torque can arm 3 deliver to its output shaft? Draw free-body diagrams of the arm and of each gear and show all forces that act upon them.
The shaft of a belt drive is made of AISI C1020 as rolled steel. The belt tensions vary continuously during transmission at a constant tension ratio of 3:1; the maximum tight side tension being 400 lb and the minimum tight side tension is expected to be 160 lb, at a pulley diameter of 12 inches. For a Goodman factor of safety of 1.8, recommend the diameter of the shaft. Consider a machined surface and the effect of a hardened profile keyway in the shaft.
A steel shaft 800 mm long transmitting 15 kW at 400 r.p.m. is supported at two bearings at the twoends. A gear wheel having 80 teeth and 500 mm pitch circle diameter is mounted at 200 mm from theleft hand side bearing and receives power from a pinion meshing with it. The axis of pinion and gearlie in the horizontal plane. A pulley of 300 mm diameter is mounted at 200 mm from right hand sidebearing and is used for transmitting power by a belt. The belt drive is inclined at 30° to the vertical inthe forward direction. The belt lap angle is 180 degrees. The coefficient of friction between belt andpulley is 0.3. Design and sketch the arrangement of the shaft assuming the values of safe stresses as :τ = 55 MPa; σt= 80 MPa. Take torsion and bending factor 1.5 and 2 respectively.
Chapter 15 Solutions
SHIGLEY'S MECHANICAL ENG.DESIGN W/CODE
Ch. 15 - An uncrowned straight-bevel pinion has 20 teeth, a...Ch. 15 - For the gearset and conditions of Prob. 15-1, find...Ch. 15 - An uncrowned straight-bevel pinion has 30 teeth, a...Ch. 15 - For the gearset and conditions of Prob. 15-3, find...Ch. 15 - An uncrowned straight-bevel pinion has 22 teeth, a...Ch. 15 - Prob. 6PCh. 15 - In straight-bevel gearing, there are some analogs...Ch. 15 - Refer to your solution to Probs. 15-1 and 15-2. If...Ch. 15 - Prob. 9PCh. 15 - Prob. 10P
Ch. 15 - Apply the relations of Prob. 15-7 to Ex. 15-1 and...Ch. 15 - Prob. 14PCh. 15 - 15-15 to 15-22 As in Ex. 15-4, design a...Ch. 15 - 15-15 to 1 5-22 As in Ex. 154, design a...Ch. 15 - 15-15 to 15-22 As in Ex. 15-4, design a...Ch. 15 - 15-15 to 15-22 As in Ex. 15-4, design a...Ch. 15 - 15-15 to 15-22 As in Ex. 15-4, design a...Ch. 15 - 15-15 to 15-22 As in Ex. 15-4, design a...Ch. 15 - 15-15 to 15-22 As in Ex. 15-4, design a...Ch. 15 - Prob. 22P
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- Provide very clear and complete solution and diagam. SITUATIONAL PROBLEM: Two shafts are connected by spur gears. The pitch radii of the gears A and B are 200 mm and 860 mm respectively. If shaft A makes 350rpm and is subjected to twisting moment of 250 N-m. Pressure angle is 14.5 degree. What is: a.) Rpm of gear B b.) Torque in shaft B (in Newton meter). c.) Separation load of two gears (in newtons). d.) Total load on gears (in newtons).arrow_forwardA belt conveyor transports 18 tonnes per hr at 20°. Determine the speed reducer power factor to lift the load vertically up sufficient to give 33.5 m horizontal center-to-center pulley distance. 1750-rpm motor, plain chain drive to helical gear speed reducer. Belt speed, 61 m/min. Discharge over tail pulley. No tripper.arrow_forwardThe reducer input shaft shown in the figure is taperedIt transmits moment with the help of a gear wheel.On the spindle, Fa = 552 N, Fr = 457 N, Ft = 1960 Nfrom gear forces and belt mechanismincoming Fk = 2600 N radial force impact. The shaft rotates with n = 1090 rpm.Accept the shaft diameter in the A bearing as dA = 35 mm.Fixed ball bearing for Lh = 13500 hselectarrow_forward
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