b) Derive an expression for the "peak to valley" height Rt of a turned surface cut on a lathe with a single point tool nose radius "r" at a feed rate of f mm/rev. Determine Rt, if r = 1 mm and f = 0.3 mm/rev and estimate the centre line average height of the surface. %3D

b) Derive an expression for the "peak to valley" height Rt of a turned surface cut on a lathe with a single point tool nose radius "r" at a feed rate of f mm/rev. Determine Rt, if r = 1 mm and f = 0.3 mm/rev and estimate the centre line average height of the surface. %3D

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

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

Please answer Q4b and 4c show working out and label each part

a) Define what is meant by "surface quality" on engineering
components and describe 2 ways in which the finish can be
specified on engineering drawings.
b) Derive an expression for the "peak to valley height Rt of a
turned surface cut on a lathe with a single point tool nose
radius "T" at a feed rate of f mm/rev.
Determine Rt, if r = 1 mm and f= 0.3 mm/rev and estimate the
centre line average height of the surface.
c) Describe 2 areas where the surface finish plays an
important part in the quality and performance of hydraulic
cylinders used in earth moving equipment. Explain the cost
implications of the finishing processes used. Use your own
sketches to illustrate your answers.

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