Define jig and explain its importance in machining operations.
Discuss the different types of jigs, including leaf jig, box and handle jig, template jig, plate jig, indexing jig, universal jig, and vice jigs. Provide constructional details of each type.
What are the general considerations in the design of drill jigs? Explain the importance of drill bushes in jigs.
Define fixture and discuss its role in machining operations.
Explain the constructional details of vice fixtures, milling fixtures, boring fixtures, and grinding fixtures.
What are the basic principles of location in fixtures?
Discuss various locating methods and devices used in fixtures.
Explain the basic principles of clamping in fixtures.
Discuss different types of clamps used in fixtures, such as strap clamps, cam clamps, screw clamps, toggle clamps, hydraulic clamps, and pneumatic clamps.
What is jig boring? Explain the process of jig boring on a vertical milling machine.
Describe the constructional details and working of open-front jig boring machines.
Discuss the constructional details and working of cross rail type jig boring machines.
Explain the system of location of holes in jig boring.
What are the different plastic processing methods? Discuss injection molding, compression molding, transfer molding, extruding, casting, calendering, sheet forming, blow molding, laminating plastics, and reinforcing.
Compare modern machining processes with traditional machining methods.
Explain the principle of ultrasonic machining. Describe the equipment used and its applications.
Discuss the principle of electric discharge machining (EDM). Describe the equipment, dielectric fluid, electrodes, process parameters, and applications of EDM.
Explain the wire cut EDM process. Describe the equipment and controlling parameters. Discuss its applications.
Discuss the principle of abrasive jet machining. Describe the equipment and its application.
Explain the principle of laser beam machining. Describe the equipment and its application.
Describe the electrochemical machining process. Explain its application and equipment used.
Discuss the constructional features, axis identification, and electronic control system of CNC milling machines.
Explain the automatic tool changer and tool magazine in CNC milling machines.
Describe the principles of CNC programming, including preparatory functions (G code) and miscellaneous functions (M code). Discuss part programming with subroutines and canned cycles.
What is machine tool automation? Discuss single spindle automates and transfer lines.
Explain the elements of control systems in machine tool automation, including limit switches, proximity switches, and the block diagram for feedback and servo control systems. Introduce the concept of PLC.
Describe the constructional elements and principles of special purpose machines (SPM). Discuss the role of SPM in improving productivity.
Explain the different types of maintenance for machine tools. Discuss repair cycle analysis, repair complexity, maintenance manuals, maintenance records, and the concept of Total Productive Maintenance (TPM).
What are the general elements of SPM design? Discuss their importance in developing efficient special purpose machines.
How can housekeeping contribute to the maintenance of machine tools?
