Questin bank for Production Technology

1. SSASIT, SURAT
QUESTION BANK
PRODUCTION TECHNOLOGY(2161909)
CHAPTER 1. METAL CUTTING
1 Explain types of chips that occur in metal cutting. Why a built up edge on a tool is
undesirable and also explain reason behind various chip formation.
2 What is tool life? Enumerate the factors affecting tool life. Briefly explain the effect of
each factor.
3 Differentiate between orthogonal and oblique cutting.
4 Draw merchant's force circle diagram for orthogonal cutting process. Give two examples
of oblique cutting.
5 What are the methods by which cutting fluids are applied in a machining operation?
6 Explain with a neat sketch the Mechanical type of lathe tool dynamometer.
7 Write a short note on advance cutting tool materials along with its characteristics and
applications.
8 Sketch a single point cutting tool and show on it the various tool elements and tool angles.
9 What is 'tool signature'? Illustrate with an example.
10 What are crater wear and flank wear? Explain.
11 Explain in detail tool dynamometer.
12 Explain with neat sketch the importance and functions of different tool angles associated
with the geometry of a single point cutting tool.
13 In Orthogonal turning of a 50 mm diameter Mild steel bar on a lathe the following data
were obtained. Rack angle = 15 degree ,, cutting speed=100m/min, Feed = 0.2 mm / rev.,
Cutting force = 180 Kg, Feed Force=60 Kg, Calculate the shear plane angle, Coefficient of
friction , Cutting power, the chip flow velocity and shear force, if the chip thickness = 0.3
mm
14 Prove that: tan ø = r cos α / (1 – r sin α)
15 The useful tool life of a HSS tool machining mild steel at 18 m/min is 3 hours. Calculate the
tool life when the tool operates at 24 m/min. Take n = 0.125
16 The following equation for tool life has been obtained for H.S.S tool VT0.13 f0.6 d0.3 = C.
A 60 minute tool life was obtained while cutting at V = 40 m/min, f = 0.25 mm/rev, d = 2
mm. Calculate the effect on tool life if speed, feed and depth of cut are together increased
by 25% and also if they are increased individually by 25%. Also give your comments.
CHAPTER 2. THERMAL ASPECTS IN MACHINING
17 Name several techniques for determining tool chip contact temperature. Describe the
Tool/work thermocouple method of measuring temperatures
18 Briefly explain about regions of heat generation and also explain about various factors
affecting cutting temperature.
19 What is Cutting fluid? Explain in brief Purpose of cutting fluids and Properties of Cutting
fluids.
20 What are the methods by which cutting fluids are applied in a machining operation?
Explain EP method.
CHAPTER 3. GEAR AND THREAD MANUFACTURING
21 Gear Terminology
22 Describe gear hobbing process in detail.
23 List the various gear finishing processes and explain any three processes.
24 Differentiate clearly between gear forming and gear generating methods.
25 What are the different methods of gear manufacturing? List the methods and explain any
one.

2. SSASIT, SURAT
QUESTION BANK
PRODUCTION TECHNOLOGY(2161909)
26 Explain with neat sketch manufacturing of gear by Gear shaping using pinion type
cutters. What are the advantages of this method?
27 Discuss Chasing with neat sketch.
28 List the various types thread manufacturing methods. And explain thread grinding
29 List the various thread manufacturing processes. Explain about thread rolling process.
CHAPTER 4. JIGS AND FIXTURES
30 Explain the degree of freedom of a work piece located in a space with a neat sketch.
Analyze the Location of a Cylinder on a Vee Block.
31 Explain 3-2-1 location principle with neat sketch.
32 Distinguish between jigs and fixtures. List the design steps for jigs and fixtures.
33 Types of jigs.
34 Types of clamping devices.
35 What is Power clamping? State merits of power clamping over mechanical clamping.
36 List the various types of locating devices used for both Jigs and Fixture.
37 Advantages of using Jigs and Fixtures.
CHAPTER 5. PRESS TOOL
38 How the Presses are classified? Sketch and describe any one of it.
39 Explain the various methods of reducing cutting force requirement in press work.
40 Explain blanking and lancing operation and Piercing operation.
41 Classify the die associated with press work and explain about compound die and
progressive die and Combination Die.
42 Write short note on material utilization factor for a sheet metal on a press tool using
press tool die. (+ Examples)
43 A round disk of 150-mm diameter is to be blanked from a strip of 3.2mm, half-hard
cold rolled steel whose shear strength 310 MPa. Determine (a) the appropriate punch
and die diameters, and (b) blanking force. Take clearance allowance for half-hard cold-
rolled steel is 0.075.
44 Types of sheet metal operations.
45 (i) Write short note on material utilization factor for a sheet metal on a press tool
using press tool die. (Ii) Coated cutting punch increase the life of punch. Discuss.
46 Explain with neat sketches, How does the provision of shear angle affect the work
done in shearing of sheet metal in press work? What is the effect of angles on product
quality?
CHAPTER 6. NON-CONVENTIONAL MACHINING
47 Write the difference between AJM and AWJM processes from the view point of
working principle, application & limitations.
48 Write short note on i) LBM ii) USM iii) ECM iv) EDM
49 What do you mean by MMR in unconventional machining? How this MMR is affected
by various parameters in AJM?
50 Explain the need of unconventional machining methods. With neat sketch explain ECG
method.