Define tool life and list the factors affecting tool life.
[3 marks]Write short note on “Types of Chips in metal cutting”.
[4 marks]What do you understand by orthogonal and oblique cutting? How do they differ from each other?
[7 marks]What is meant by fool proofing as applied to jigs and fixtures?
[3 marks]Explain the essential characteristics and function of cutting fluid.
[4 marks]List various principles of location and explain the 3-2-1 Principal of Location with neat sketches.
[7 marks]The following relates to orthogonal turning o f a mild steel rod of 40 mm diameter. Feed 0.9 mm; chip thickness 1.2 mm; work rotational speed 80 rpm. Calculate chip thickness ratio (r), chip reduction ratio (K) and total length of chip removed per minute.
[7 marks]What are the differences between Jigs and Fixtures?
[3 marks]Explain the function of (i) Die Block (ii) Punch.
[4 marks]Draw the Merchant’s circle diagram and derive relation among various forces acting on cutting tool.
[7 marks]What do you mean by chip with built up edge? What factors are responsible for this type of chip formation?
[3 marks]What are crater wear and flank wear.
[4 marks]Name several techniques for determining tool chip contact temperature. Describe the Tool/work thermocouple method of measuring temperatures.
[7 marks]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
[3 marks]Discuss Chasing with neat sketch.
[4 marks]Explain with neat sketch manufacturing of gear by Gear shaping using pinion type cutters. What are the advantages of this method?
[7 marks]State the reasons why bush is used in jigs.
[3 marks]Draw and discuss Hinged clamping device.
[4 marks]Briefly explain about regions of heat generation and also explain about various factors affecting cutting temperature.
[7 marks]Differentiate between a progressive die and a combination die.
[3 marks]Write short note on material utilization factor for a sheet metal on a press tool using press tool die.
[4 marks]Write short note on USM.1
[7 marks]List the various process parameters that affect the MRR in EDM Machining.
[3 marks]Write important functions of dielectric fluid.
[4 marks]Describe water jet machining process with the help of neat sketch. State its advantages and application.
[7 marks]