Manufacturing Process 2 - Dec 2013

Mechanical Engg. (Semester 4)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 1 (a) Explain with a neat sketch the nomenclature of a single point cutting tool, highlighting the significance of different angles.(8 marks) 1 (b) With necessary sketches, explain the type of Tool wear.(8 marks) 1 (c) Briefly describe the various types of chips produced during metal cutting operation.(4 marks) 2 (a) What are the describe properties or characteristics of an ideal cutting tool material?(6 marks) 2 (b) Briefly explain the desirable properties and purpose of cutting fluids.(6 marks) 2 (c) With a neat sketch explain different heat affected zones during orthogonal cutting.(8 marks) 3 (a) Differentiate between turret lathe and capstan lathe.(6 marks) 3 (b) Explain with the help of neat sketch, the whitworth quick return mechanism of a shaper.(8 marks) 3 (c) Compare shaper and planner in terms of their operation, type of workplace and applications(6 marks) 4 (a) Draw a neat diagram of a radial drilling machine. Name and explain the parts and its principle of operation(7 marks) 4 (b) Explain with sketches the following operation in a drilling machine.
i)Reaming ii) Boring ii) Counter boring iv) Tepanning.(7 marks) 4 (c) Describe twist drill nomenclature using sketches.(6 marks) 5 (a) Differentiate between
i) Up milling and down milling ii) Simple indexing and compound indexing.(8 marks) 5 (b) With a neat sketch explain the working of an universal dividing head.(6 marks) 5 (c) Show the calculation for setting, dividing head to mill 69 tech (division) on a spur gear blank by compound indexing. Index plate with circles of holes patented by the porous and sharp Manufacturing company are as follows:
plate No 1-15,16,17,18,19,20
Plate No.2-21,23,27,29,30,33
Plate No.3-37,39,41,43,47,49(6 marks) 6 (a) With respect to grinding process, differentiate between:
(i) Glazing and loading.
(ii) Dressing and truing of wheels.
iii) Cylindrical grinding and centreless grinding.(12 marks) 6 (b) Explain the different factors to be considered in the selection of a grinding wheel.(8 marks) 7 (a) Sketch and explain process of surface finishing(6 marks) 7 (b) What is Honing? Explain with sketch.(6 marks) 7 (c) List the operation and application of polishing and buffing(8 marks) 8 (a) Explain briefly with a neat sketch the working principle of a electron beam machining (EBM) and what are its limitations.(10 marks) 8 (b) Briefly describe the principle of electro-discharge machine (EDM) process with a sketch and what are its advantages and disadvantages.(10 marks)