spur gear (shown in the Figure with A) press fitted to a steel shaft. The safety factor for the joint is k=1,3. The shaft has 65 mm in diameter. Tolerances for shaft and gear hub are t6 and H7 respectively. Numerical values for these tolerances are shown in the Figure. Surface roughness values for shaft and hub are given as RzM=3 µm and RzG=4 µm. Friction coefficient on the contact region can be taken as 0,1. Both shaft and hub are made from steel and elasticity modulus is E=2,1.10° N/mm². a) Calculate the maximum and minimum values of the theoretical and actual interferences regarding the tolerances. b) What is the minimum surface pressure in the contact region? c) Find the minimum transmittable power for this press fit joint at 7XY rpm. A (+) t6 H7 66 0- line (-) 2.p.d Ad= E(1-QĞ) 100 $130 $65

spur gear (shown in the Figure with A) press fitted to a steel shaft. The safety factor for the joint is k=1,3. The shaft has 65 mm in diameter. Tolerances for shaft and gear hub are t6 and H7 respectively. Numerical values for these tolerances are shown in the Figure. Surface roughness values for shaft and hub are given as RzM=3 µm and RzG=4 µm. Friction coefficient on the contact region can be taken as 0,1. Both shaft and hub are made from steel and elasticity modulus is E=2,1.10° N/mm². a) Calculate the maximum and minimum values of the theoretical and actual interferences regarding the tolerances. b) What is the minimum surface pressure in the contact region? c) Find the minimum transmittable power for this press fit joint at 7XY rpm. A (+) t6 H7 66 0- line (-) 2.p.d Ad= E(1-QĞ) 100 $130 $65

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

SUBSTITUTE X= 1 AND Y =1

A spur gear (shown in the Figure with A) press fitted to a steel shaft. The safety factor for the
joint is k=1,3. The shaft has 65 mm in diameter. Tolerances for shaft and gear hub are t6 and
H7 respectively. Numerical values for these tolerances are shown in the Figure. Surface
roughness values for shaft and hub are given as RzM=3 µm and RzG=4 µm. Friction coefficient
on the contact region can be taken as 0,1. Both shaft and hub are made from steel and elasticity
modulus is E=2,1.10$ N/mm².
a) Calculate the maximum and minimum values of the theoretical and actual interferences
regarding the tolerances.
What is the minimum surface pressure in the contact region?
b)
c) Find the minimum transmittable power for this press fit joint at 7XY rpm.
A
(+)
t6
H7
0- line
2.p.d
Ad=
E(1-QĞ)
100
$130
$65
85
99

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