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E1135 Pages: 2

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION(S), MAY 2019

Course Code: ME303
Course Name: MACHINE TOOLS AND DIGITAL MANUFACTURING

PARTA
Answer any three full questions, each carries 10marks.
Draw the tool-chip interface of a metal cutting process and explain the regions of
heat generation.
Compare orthogonal cutting & oblique cutting.
Describe different types of tool wear.
During an orthogonal cutting of steel, the following data were obtained. Chip
thickness = 0.35mm, width of cut = 3mm, feed = 0.25 mm/rev, tangential cutting
force = 110014, feed thrust force =325N, cutting speed = 2m/s, a = +10°.
Calculate the Shear force & Kinetic coefficient of friction.
Why Cast Iron is preferred for Lathe bed.
With a neat diagram explain how a lathe is specified.
Differentiate between Counter boring & Counter sinking with help of neat
diagrams.
With a neat diagram explain different parts of a radial drilling machine.
PART 13
Answer any three full questions, each carries 10marks.
List the advantages of V—guide ways provided on the planing machine bed.
Compare planning & shaping machines.
Calculate the cutting speed if the shaper has stroke length of 240 mm, number of
double strokes per minute 40 and ratio of return to cutting time 2:3.
Explain various operations performed on slotting machines.
Discuss the advantages & disadvantages of Up milling & Down milling with the
help of diagrams.
List any three milling attachments used.
With a neat sketch explain the principal parts of a milling machine.

Illustrate the milling cutter nomenclature with a neat diagram.

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Duration: 3 Hours

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