ME2252 Manufacturing Technology-II question bank download

DEPARTMENT OF MECHANICAL ENGINEERINGII Year Mechanical Engineering - Sec A & BME2252 MANUFACTURING TECHNOLOGY-IIQUESTION BANK
      PART-A

1.     Give two examples of orthogonal cutting
2.     What are the four characteristics of the materials used for cutting tools Important?
3.     Why is it essential that the cutting point of the tool should be level with the spindle taper machining center, while on a work-piece
4.     What is the difference between a ram type turret lathe and saddle type turret lathe?
5.     Under What conditions would be preferred over other machining operation planning Processes like milling, broching, shapping, etc.
6.     What are the common work holding devices used on milling machines?
7.     What is used for lapping?
8.     State of the abrasives used in the manufacture of grinding wheels.
9.     What is the difference between incremental and absolute system?
10.     What is the role of computer for NC machine tool?
11.     What are the Factors Responsible for built-up edge in cutting tools?
12.     What is electro-chemical wear in tools?
13.     Mention four different types of chucks used in a machine shop.
14.     What is rake angle? What is the effect of the nose radius in the tools?
15.     What is up milling and down milling operations?
16.     Mention four Important Factors That Influences the selection of grinding wheels.
17.     What is roller burnishing process?
18.     Define NC
19.     Mention the major elements of the NC machines.
20.     What you know about and fluted drill straight fluted drill?

PART-B1. Expain the geometry of single point cutting tool with suitable sketches2. Explain the basic actions of cutting fluids.3. During the orthogonal cutting, the following, where the data recorded
      Back rake angle = 25 deg
      Chip thickness = 0.15 mm / rev
      Length of chip = 40 mm
      Length of chip = 100 mm
      Width of cut = 3.5 mm chip before
      Coefficient of friction = 0.75
      Cutting speed Vc = 250 m / min
      Average shear stress = 250 N / mmDetermine power consumption.
4. Spamming the thread cutting operation in a lathe with a neat sketch. Also make a note on Knurling, grooving and forming operations in a lathe.5. Discuss the features of the RAM type and saddle type turret6. Explain the features of the multi-spindle automatics.7. With the sketches explain the features of the major elements of a twist drill8. Explain different types of milling cutters9. Make a note on different types of work holding devices used in a slotting machine.10. Explain the different types of table drive and feed mechanisms in a planning machine.11. Explain the salient features of a center less grinding machine and discuss the different operations that can be Carried out in it. Advantages mention some.12. Briefly discuss about different types of abrasives used in a grinding wheel.13. Explain the gear shaving, gear honing and lapping Processes gear.14. Discuss the Important design features of CNC machine tools.

15. Write Short notes on:
      i NC machine tool classification
      ii. APT programming structure
      iii G and M codes
      iv Vs Conventional machine CNC machine16. Explain the conditions that promote the formation of the following types of chip
      i. Continuous built up edge chips without
      ii. Continuous chips with built up edge
      iii. Discontinuous chip17. Define the Various parts of a single point cutting tool with a neat sketch tool.18. What are the angles of the cutting tool slandered? Illustrate with an example.19. Describe some of the methods and equipment for holding work on a lathe.20. Explain any four Commonly used attachments on lathe.21. Briefly explain the principle of working of the sliding head type single spindle automatic machine.22. Describe with neat sketch a turret automatic screw machine.23. State the Advantages of Ward-Leonard drive.24. Explain with a sketch "Fast and Loose pulley" quick return mechanism of a planer table.25. State the methods of holding milling cutters.26. Explain indexing simple, compound and differential indexing with indexing suitable example.27. State the Advantages and limitations of the Broaching.28. Compare with Gear Hobbing gear shaping.29. Explain self-sharpening characteristics of the grinding wheel.30. Describe the use of cutting fluids in grinding.31. Spamming wheel truing and dressing.32. State a few typical applications where the use of a numerical control would be justified.33. Describe in brief the basic components of a tape-operated NC machine tool.34. Discuss the Advantages of computer numerical control system.35. What is the difference between positioning and contouring machines machines?

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