ME-802-C Machine Tool Design - May 2022 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 14 Marks
   Discuss about the Kinematical structures of machine tools, mentioning the Kinematical features also.
   How to answer

   • Define kinematical structure of machine tools
   • Types of motions - primary, feed, auxiliary
   • Kinematical features - speed range, feed range, etc.
   • Examples of structures in lathe, milling, drilling
2. 7 Marks
   aWhat is the need of variation of speed in machine tool?
   How to answer

   • Need for different cutting speeds for different materials
   • Effect of diameter, tool material, operation
   • Productivity and surface finish requirements
   • Speed variation methods in brief
3. 7 Marks
   bWhat is Ray diagram? Discuss its application.
   How to answer

   • Definition of ray diagram
   • Construction procedure
   • Interpretation of rays for speed steps
   • Applications in gearbox design
4. 14 Marks
   Discuss low speed, feed and power requirements are chosen for a proposed machine tool.
   How to answer

   • Factors deciding low speed limit
   • Feed selection criteria
   • Power estimation from cutting forces
   • Procedure for proposed machine tool
5. 7 Marks
   aWhat is Machine Tools, clarify them?
   How to answer

   • Definition of machine tools
   • Classification - metal cutting, metal forming
   • Examples
   • Clarification of functions
6. 7 Marks
   bExplain what happens when metal is cold worked?
   How to answer

   • Definition of cold working
   • Strain hardening effect
   • Changes in hardness, ductility, grain structure
   • Residual stresses and properties
7. 7 Marks
   aDifferentiate between jig and fixture.
   How to answer

   • Definition of jig
   • Definition of fixture
   • Points of difference - guiding, clamping, use
   • Tabular comparison
8. 7 Marks
   bDescribe the operation of three high roll mill.
   How to answer

   • Construction with three rolls arrangement
   • Working principle and direction reversal
   • Pass sequence of workpiece
   • Applications and limitations
9. 7 Marks
   aDiscuss the design principles for forging dies.
   How to answer

   • Functions of forging dies
   • Material, draft, flash, shrinkage considerations
   • Die block and parting line principles
   • Life and cost factors
10. 7 Marks
    bDistinguish between a ray diagram and speed diagram.
    How to answer

    • Definition of ray diagram
    • Definition of speed diagram
    • Points of distinction in construction and use
    • Tabular comparison
11. 7 Marks
    aDiscuss the design features of thread snap gauges.
    How to answer

    • Purpose of thread snap gauges
    • Constructional features - frame, anvils
    • Tolerances and adjustment
    • Use procedure
12. 7 Marks
    bWhat is flow molding? Explain.
    How to answer

    • Definition of flow molding
    • Principle and material flow
    • Process steps
    • Applications
13. 14 Marks
    Write short notes on any two.

    1. a)Design features of forging die
    2. b)Electrical drives
    3. c)Principles of location
    How to answer

    • Select any two topics
    • Key design / working principles for each
    • Relevant diagrams and applications
    • Advantages and limitations