1) Explain the working of a turret indexing mechanism with a neat sketch.a) Explain the difference between a capstan and turret lathe? b) What are the attachments commonly used on a capstan lathe? Explain the principle of operation of a sliding head automat with a suitable sketch. Explain the different methods of automatic feeding mechanism that are used in automats. a) How gear shaving is done? Explain in brief.b) Draw a gear shaper cutter and describe the nomenclature.
2) Describe the working of gear shaping and gear hobbing machines. Compare and contrast the merits and demerits of the rotary transfer and in line transfer machine. Write a brief notes on the following: a) Swarf cleaning devices b) Unit head.Describe what is laser? Discuss how laser is utilized on the machining materials and also explain the function of laser beam machining (LBM) with a neat sketch.
3) Write a brief notes on: a) Abrasive jet machining (AJM) b) Ultrasonic Machining (USM) c) Electron beam machining (EBM). What do you understand by metal removal rate? State the effect of negative rake angle on Tools? What do you meant by machinability index? Explain what is meant by chip thickness ratio? Describe what is tool life? State any four cutting tool materials? Explain what is press tonnage of the press?