MANUFACTURING TECHNOLOGY (ME-405) - Important Questions

Explain centreless grinding with neat sketch, covering working principle, applications, advantages and limitations.

Explain the nomenclature (tool signature) of a single point cutting tool with neat sketches.

A cylindrical bar of 100 mm diameter is orthogonally straight turned with cutting velocity 120 m/min, feed 0.25 mm/rev and depth of cut 4 mm. Specific cutting energy of work material is given. Neglecting feed force contribution, find the main (tangential) cutting force and power consumed.

Write short notes on the superfinishing processes: honing, lapping, electro-polishing and buffing.

What is gear hobbing and how does it work? Explain with neat sketch, along with advantages and limitations.

Compare form cutting versus gear generation with respect to their principles, accuracy and applications.

Explain the injection moulding process with a neat sketch, including construction, working principle and industrial applications.

Explain the calendaring process for plastics with a neat sketch.

What is welding of plastics? Explain it along with its advantages and limitations.

Explain the construction and working of Electron Beam Machining (EBM) with diagram, including its advantages and applications.

Explain the process/working principle and procedure of electrochemical machining (ECM) with diagram, along with its advantages and limitations.

Explain the working principle and construction of ultrasonic machining (USM) with a neat sketch showing important elements, along with applications.

Explain the construction, working principle and applications of plasma arc machining with neat sketch.

Define extrusion and differentiate between hot extrusion and cold extrusion processes with respect to surface finish, mechanical properties, materials used and equipment.

Explain the construction and constructional features and working of an NC machine tool with block diagram.

Write the CNC part program for milling / machining center for the given part geometry (dimensions in mm).