assignment 3

ASSIGNMENT 3

UNIT ONE SECTION B

1. Name two types of Arbor presses?

2. Name three uses for Arbor presses?

3. What is a bushing?

4. What is a press fit?

5. Name three major components of an Arbor press?

6. What can happen if you install a bearing incorrectly?

7. When pressing in an object should you use lubricants? Why?

8. What is broaching?

9. How would you straighten a shaft?

10. What are some of the dangers of the press?

UNIT TWO SECTION B

11. Name three different vices?

12. Name three types of work Holding Devices?

13. Why use soft jaws?

14. Name three uses of a vice?

15. When Bending material which jaw should you bend toward?

16. Should you use a cheater bar on a vice? Why or why not?

UNIT THREE SECTION B

17. When using a hacksaw do push or pull to achieve a cut?

18. Name two different hacksaw blades?

19. When do you not apply cutting pressure to a hacksaw blade? Why?

20. What does pitch refer to on a saw blade?

UNIT FOUR SECTION B

21. What is a file?

22. What is a pillar file?

23. What is a file made of and how hard are they?

24. Name three different files and their applications?

25. What are thread files and how is their use determined?

26. What is chock used for?

27. How do you clean a file properly?

28. Why do you use a stroke as long as possible on a file?

29. Should you use your fingers between cuts on a file? Why?

UNIT FIVE SECTION B

30. Why are reamers used?

31. what is the criteria for a reamer before it is used?

UNIT 6 SECTION B

32. What is a serial tap?

33. What does NC,NF, and NEF, stand for when referring to taps?

34. What are flute less spiral point taps used for?

35. What are taper pipe taps used for?

UNIT SEVEN SECTION B

37. What are some of the key factors in relation to thread strength?

39. What is the common practice for bolt engagement?

40. What is the formula for thread calculation?

41. What is the RPM calculation?

42. Name three things you have to do before taping a hole?

43. What are some of the factors when selecting a speed for tapping?

44. What are some of the ways tap friction is reduced?

45. Express the taper of a standard pipe tap?

46. When referring to a tap what is major diameter?

47. When referring to a tap what is minor diameter?

48. When referring to a tap what is pitch diameter?

49. What is a tap drill?

50. What is a body drill?

51. What is vanishing thread?

52. Solve the drill size for -13 flat root thread using the following formula:

TAP DRILL=MAJOR DIAMETER .0130 (PERCENT THREAD / PITCH)