CHAPTER SEVEN Belt Drives, Chain Drives, and Wire Rope303TABLE 7-27 V-Belt Drive Design ProblemsNominalInputoutputInput powerProblemnumberDrivertypeDrivenServicespeedspeedmachine(h/day)(rpm)(hp)(kW)(rpm)18.AC motor (HT)Hammer mill88702518.631019.AC motor (NT)Fan22175053.7372520.6-cylinder engineHeavy conveyor1615004029.855021.DC motor (compound)Milling machine1612502014.969522.AC motor (HT)Rock crusher887010074.6625Note: NT indicates a normal-torque electric motor. HT indicates a high-torque electric motor. For Problems 18-22 (Table 7-27), design a V-belt drive.Specify the belt size, the sheave sizes, the number of belts, theactual output speed, and the center distance.

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Answered: CHAPTER SEVEN Belt Drives, Chain…

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter8: Computer Numerical Control

Section8.1: Cnc Basics

Problem 3RQ: Briefly describe a ball screw and a linear guide.

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A hammer mill is driven by a High Torque (HT) AC motor. The system is used for 8 hours /day. Input speed is 870 RPM and input power is 25 HP. Nominal output speed is 310 RPM. Design a V-belt drive and specify:(a) (b) (c) (d) (e)the belt size,the sheave sizes,the number of belts, theactualoutputspeed,the center distance. Show all your calculations.
2. Design a V-Belt drive, Specify the belt size, the sheaves sizes, the number of belts, the actual output speed, and the center of distance. Service Input Input Power Nominal Problem Driver Driven Турe Machine day speed output (HP) (kW) (rpm) speed(rpm) 1750 3.73 310 26 22 V-Belt AC motor Fan (NT)
TO THE NEXT PROBLEM Design a complete belt drive system for an AC motor (NT) running a fan 12 hrs/day, with an input power 10 hp and input speed of 1000 RPM. The desired output RPM and center distances are 500 RPM and 36 inch, respectively
3. Design a roller chain drive. Specify the chain size, the sizes and number of teeth in the sprockets, the number of chain pitches, and the center distance. Problem Driver Driven Input Input Power Nominal Туре Machine speed output (HP) (kW) speed(rpm) (rpm) 500 Roller 250 6-cylinder engine Heavy 40 29.8 Chain Conveyor
Solve it pls
A V-Belt drive is designed so that it has the input sheave on the shaft of an electric motor (normal torque) rated at .55 hp at 1160 rpm full-load speed. The drive is to a bucket elevator that is to be used 12 hours daily at approximately 675 rpm. The center distance is about 19.5 in. Add the detailed steps of your design to your attached worksheet. Hints: 1) In your design choose an appropriate belt section, specify the small pulley diameter, the large pulley diameter and the length of the belt. Determine the Belt length in inches, in two significant figures. Please enter below a numerical value only, no units are needed. Answer:
From the example problem, assume this is to be connected by a CROSS BELT. A. Determine the diameters of all the step. B. Angle of contact for each pair of pulleys, C. belt length.
I need typed solution.
Find the angle of contact on the small pulley for a crossed belt drive with center distance of 73", if pulley diameters are 7" and 14", respectively. Also find the difference in length if anopen belt is used instead.
3)Design a V – Belt drive to the following specifications Power transmitted = 75kw Speed of driving wheel = 1440rpm Speed of driven wheel = 400rpm Diameter of driving wheel = 300mm Center distance = 2500mm Service = 16hrs/day
Problem 4-14a Find the worst value of the transmission angle for a crank-rocker linkage with link lengths (a, b, c, d) of 2, 7, 9, 6, respectively.
A belt drive consists of a flat belt stretched between two pulleys of equal diameter, 400mm, as shown in Figure Q1(a). The belt drive transmits a power of 250 W when the pulleys rotate at 150 rpm. The coefficient of friction between the belt and the pulley is 0.3. 400 mm Figure Q1(a) a) What is the value of the belt speed? b) What is the value of the effective tension transmitting power, T1-T2? c) What is the value of the ratio between the tight and slack tension, T1/T2? d) Use your answers to (b) and (c) to compute the individual values of T1 and T2. The belt has a density of 0.005 kg/cm3 and has a rectangular cross-section with width 5 cm and thickness 0.8 cm. The belt's maximum allowed stress is 50 N/cm2. e) Does the belt exceed its maximum allowed stress? Justify your answer.

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