Production Technology - Dec 2015
Mechanical Engineering (Semester 8)
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) Derive various force equations can be derived using Merchant Circle diagram.(7 marks) 1(b) Draw neat sketch of single point cutting tool showing the six major angles. Explain the need of providing these angles.(7 marks) 2(a) Explain the need of unconventional machining methods. With neat sketch explain ECG method.(7 marks)
Solve any one question from Q.2(b) & Q.2(c)
2(b) Explain with neat sketches compound die and progressive die.(7 marks) 2(c) Explain Design of cam for single spindle automatic Transfer Machines with suitable example.(7 marks)
Solve any one question from Q.3 & Q.4
3(a) Explain significance of center of pressure in design of press tools. How it is calculated?(7 marks) 3(b) How the Presses are classified? Explain the methods of reducing the force requirement in press work.(7 marks) 4(a) List various principles of location and explain the 3-2-1 Principal of Location with neat sketches.(7 marks) 4(b) What is drilling Jig? Explain the various types of bushes used in drilling jig.(7 marks)
Solve any one question from Q.5 & Q.6
5(a) Define tool life and explain in brief the factors affecting it.(7 marks) 5(b) Explain in detail tool dynamometer.(7 marks) 6(a) Discuss following thread manufacturing methods with neat sketch (i) Chasing (ii) Rolling (iii) Tapping.(7 marks) 6(b) Explain methods of temperature measurement at tool-work interface.(7 marks)
Solve any one question from Q.7 & Q.8
7(a) Discuss the differences between Turret and Capstan lathes.(7 marks) 7(b) Write important functions of dielectric fluid and electrolyte. Also write various types of commonly used dielectric fluid and electrolyte(7 marks) 8(a) Explain the different machine tool structures.(7 marks) 8(b) Explain in brief what you understand by bar type and chucking type machines.(7 marks)