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Engineering · Mechanical Engineering
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Machine design
b) [20 Points]) The figure below shows a camshaft which rotates at 650 rpm, causing the follower to raise and lower once per revolution. The follower is to be held against cam by a helical compression spring with a force that varies between 300 N and 600 N as the spring length varies over a range of 25 mm (lint working deflection). The spring is to be assembled with a preload of 300 N. Spring wire diameter d-8 mm. Use spring index C-8. Ends are to be squared and ground. The material used to make spring is shot. penned chrome-vanadium steel valve spring wire, ASTM A232 with shear modulus G 77.2 GPa. The material used to make spring is shot-penned chrome-vanadium steel valve spring wire, ASTM A232 Determine the factor of safety against fatigue, n, for infinite life using Gerber criterion with Zimmerli data, spring stiffness, free and shut length, number of active coils and total number of coils. Will spring buckle? K S Tul lengti igve Ma Valve 600 N 300 N Valve Quide Valve Spring 25 mm 600 N Valve Folower 300 N Camshaf Cam
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