Give three points each on advantages and disadvantages of CAM.
[3 marks]Draw the CIM wheel to understand basic functions.
[4 marks]Explain closed-loop control system used in a CNC system with a schematic diagram (include its limitation and application). Draw a block diagram of position control loop for a closed-loop control system.
[7 marks]What is meant by the term ‘group technology’?
[3 marks]Brief about ‘continuous path control’ used in a CNC machine tool system.
[4 marks]Explain the ‘stick-slip phenomenon’ encountered in conventional friction guideways. How is it overcome with the use of anti-friction guideways?
[7 marks]Write an NC part program for drilling three holes in the plate shown in Figure 1. Work material is a machinable grade of alluminium 10-mm thick. Specify the cutting tool and describe your procedure for this task. Feed and cutting speed for the work material are 0.05 mm/rev and 0.37 m/sec respectively. Show interpretation of each block you write in a remark column. Dimensions in mm Figure 1
[7 marks]Enlist the four major components an FMS is comprised of. What is the role of humans in it?
[3 marks]Why are various layout types in FMS made available to choose from? Enlist the types and draw schematic diagram of any one layout.
[4 marks]Write a note on: Automated Storage and Retrieval System (AS/RS).
[7 marks]Define PLC. Brief about the relay device components used in it.
[3 marks]State points on ‘role of management in CAM’.
[4 marks]Explain generative type CAPP system using a block diagram.
[7 marks]In which two categories the actuation systems employed for robots can be distinguished? State the application area or environment in which each of these could be used.
[3 marks]Enlist the general characteristics of a work-situation which promotes the use of robots.
[4 marks]Describe the methods for programming robots. What are the advantages of each method?
[7 marks]Explain the PLC architecture using a diagram.
[3 marks]Brief about ‘cellular manufacturing’.
[4 marks]Provide a comprehensive list of robot specifications with regard to (a) manipulator and (b) controller.
[7 marks]What do you understand by MRP-II? What does the acronym ERP stand for?
[3 marks]Draw the structure of an MRP system.
[4 marks]Write a note on: Different types of flexibility required in an FMS.
[7 marks]In block number 80 of a part program a clockwise circular interpolation is required to the target point (25.40, 12.50, --10.00) with feed rate 150 mm/min and spindle on. Write this block in fixed sequential format, tab sequential format and word address format. (Coordinates are in millimeters)
[3 marks]Explain with reference to CNC machining: tool nose-radius compensation is a must for taper- and radius-turning, whereas it is not required while turning straight cylindrical surface.
[4 marks]Elaborate the ‘Just in Time’ manufacturing philosophy along with its goals. How could these goals be achieved?
[7 marks]