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Examples of tools

Examples of tools. Why. Why. The manufacture of machines require close tolerances. Why. The manufacture of machines require close tolerances. Interchangeability of parts require precision parts. How small is Precise?. How small is Precise?. Most tools will measure to 1/1000 of an inch.

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Examples of tools

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  1. Examples of tools

  2. Why

  3. Why • The manufacture of machines require close tolerances.

  4. Why • The manufacture of machines require close tolerances. • Interchangeability of parts require precision parts

  5. How small is Precise?

  6. How small is Precise? • Most tools will measure to 1/1000 of an inch.

  7. How small is Precise? • Most tools will measure to 1/1000 of an inch. • The normal human hair is about 2/1000 of an inch thick.

  8. How small is Precise? • Most tools will measure to 1/1000 of an inch. • The normal human hair is about 2/1000 of an inch thick. • Measurements are written as decimals.

  9. How small is Precise? • Most tools will measure to 1/1000 of an inch. • The normal human hair is about 2/1000 of an inch. • Measurements are written as decimals. • 1/1000 = .001

  10. Outside Micrometers

  11. Outside Micrometer • Accuracy to .001 • Range of one inch.

  12. Parts of the micrometer. • Anvil

  13. Parts of the micrometer. • Anvil • Spindle

  14. Parts of the micrometer. • Anvil • Spindle • Frame

  15. Parts of the micrometer. • Anvil • Spindle • Frame • Barrel

  16. Parts of the micrometer. • Anvil • Spindle • Frame • Barrel • Thimble

  17. Parts of the micrometer. • Anvil • Spindle • Frame • Barrel • Thimble • Ratchet

  18. Parts of the micrometer. • Anvil • Spindle • Frame • Barrel • Thimble • Ratchet • Lock

  19. Reading the Outside Micrometer

  20. Reading the Micrometer. • Determine the range of the tool. • 0 - 1” • 1” - 2” • 2” - 3” • 3” - 4” .

  21. Start by writing 3. This represents the smallest size this micrometer can measure. 3.

  22. Read the largest numbered line showing on the barrel. 3.

  23. Read the largest numbered line showing on the barrel. • Write this down to the right of the decimal. 3.6

  24. Count the small lines between the long 6 line, and the edge of the thimble. 3.6

  25. Count the small lines between the long 6 line, and the edge of the thimble. • In this case three small lines are showing. • Each line = .025 • Three lines = .075 3.675

  26. Find the line closest to the base line on the barrel. • Each line represents .001 of an inch. • Add this reading to the size we currently have. 3.675 + .016 3.691

  27. The reading of this micrometer is • 3.691 • Read as • Three inches, six hundred ninety one thousands. 3.675 + .016 3.691

  28. Read the micrometer. Practice A

  29. .261 Practice A

  30. Read the micrometer. Practice B

  31. .399 Practice B

  32. QUIZ Take out a sheet of lined paper. Put your name, date, and period number on the top. Number from 1 to 5.

  33. #1 Quiz

  34. #2 Quiz

  35. #3 Quiz

  36. #4 Quiz

  37. #5 Quiz

  38. The End

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