USS ProCoil Company. WELCOME To Micrometer Training. Introduction and Lecture Phase I 6/18/2010

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1 1 WELCOME To Micrometer Training Introduction and Lecture Phase I

2 2 Primary Instructor Charles J. Barger Secondary Instructor Fred Davis Today's training will be conducted in a four hour block of instruction, or 240 minutes We will take 10 minute breaks every 50 minutes. Training will occur in three phases 1. Introduction with Lecture and demonstration by the Instructor 2. Practical Exercise: You will practice working in two person teams to master the instruction presented. 3. Evaluation: You will be demonstrate your proficiency on micrometers by taking written as well as hands on performance tests with actual micrometers and flat rolled sheet, exactly like you use in the plant. All tests require a 100% pass rate or a Go rating on the hands the performance evaluations.

3 3 Training Goals and Objectives There are a total of 8 training objectives. 1. Given a window micrometer capable of reading.001 inches, a metric micrometer, a thread pitch micrometer and a outside micrometer capable of reading.0001 inches, the Production Assistant will recall from memory the four types of micrometer and define their use with 100% accuracy. 2. Given an outside micrometer capable of reading.0001 inches, the Production Assistant must be able to identify the seven major components of the micrometer with 100% accuracy. 3. The Production Assistant will examine a micrometer and recall from memory the types of wear and damage to look for with 100% accuracy. 4. Given an explanation on how to care and store a micrometer to prevent damage during use and while in storage, the Production Assistant must be able to explain the concepts with 100% accuracy. 5. Given an outside micrometer capable of reading.0001 inches, and a work piece to measure, the Production Assistant must correctly apply the micrometer to the work piece and take a reading with 100% accuracy. 6. Given an operational outside micrometer capable of taking readings to within.0001 inches, the Production Assistant must take and record readings of 10 work pieces of varying thickness to within an accuracy of +/ inches. Note the tolerance is given due to sensitivity of the device. 7. Given an operational outside micrometer capable of reading.0001 inches, and a spanner wrench, the Production Assistant will adjust the micrometer so that it reads 0 when the measuring shaft is fully seated against the anvil. 8. Given an operational outside micrometer capable of reading to within.0001 inches, the Production Assistant must check the micrometer with a precision gauge block before taking measurements. The micrometer readings must match the gauge block dimensions with 100% accuracy.

4 4 Order of Instruction The 8 Training objectives will be broken down into 3 sub groups Group Objective Evaluated I II 1. Identify the various types of micrometers. 2. Identify the various parts of a micrometer. 3. Inspect a micrometer for damage prior to use. 4. Care and Storage Written 3 Written 4 Performance with criterion Scoring check sheet III 5. Taking a measurement 6. Taking a reading 7. Adjust a micrometer for accuracy 8. Check a micrometer for accuracy prior to use. Performance with criterion Scoring check sheets.

5 5 OBJECTIVE 1 Window Micrometer Given a window micrometer capable of reading.001 inches, a metric micrometer, a thread pitch micrometer and a outside micrometer capable of reading.0001 inches, the Production Assistant will recall from memory the four types of micrometer and define their use with 100% accuracy Note the window with the numbers. It reads in.001 inches.

6 Metric Micrometers 6 Metric Micrometer Close up of the data plate

7 Thread Pitch Micrometer 7 Thread Pitch Micrometer with interchangeable points Thread Pitch Micrometer with fixed points. The point is the give away!

8 Outside 1 inch micrometer, ooo1 inches 8 One Inch Outside Micrometer. Note the range 0-1 and graduation0.0001

9 9 Anvil Spindle Sleeve Thimble Ratchet Stop OBJECTIVE 2 Given an outside micrometer capable of reading.0001 inches, the Production Assistant must be able to identify the seven major components of the micrometer with 100% accuracy. Locking Nut Frame

10 10 Objective 3 The Production Assistant will examine a micrometer and recall from memory the types of wear and damage to look for with 100% accuracy. Examine the micrometer for any of the following: Nicks Gouges Worn off increment marks Bent measuring shaft or spindle Broken window glass on digital micrometers. Any loose locking nuts, or ratchet stops. The most important type of mechanical damage is a spindle. Micrometers are precision measuring instruments, as such, they are not designed to take abuse. If a micrometer is dropped or struck it may not turn easily. Never use a micrometer that does not turn easily.

11 11 Objective 4 Given an explanation on how to care and store a micrometer to prevent damage during use and while in storage, the Production Assistant must be able to explain the concepts with 100% accuracy. It is only necessary to wipe down a micrometer with a lint free cloth. Never immerse a micrometer into any type of cleaning solvent or oil. Do not use soap, WD -40 or any type of penetrating oil on a micrometer as it can damage the internal components. Each micrometer when purchased comes with a plastic case. Older models encountered may have a wooden case. It is not advisable to store a micrometer in a tool box unprotected, where it be struck against by other tools or heavy objects. Whenever readings are made it is best practice to return the instrument to the storage case after you have taken a reading. Leaving the micrometer set out in the open or unprotected raises the risk for potential damage. Machine vibrations, or setting it off to the side where it can be struck or knocked to the floor should be avoided.

12 12 Objective 6 Given an operational outside micrometer capable of taking readings to within.0001 inches, the Production Assistant must take and record readings of 10 work pieces of varying thickness to within an accuracy of +/ inches.

13 Turn the thimble all the way out so that the increments can be fully seen These represents.100 of an inch The line extending horizontally to the left the first zero is known as the reading line The vertical lines directly below each number and in between the numbers represents a unit of measure equal to twenty five thousandths of an inch or.025. Reading Line Sleeve 0 1 Horizontal Readings along The sleeve are equal to Thimble Reading spaced around the circumference of the thimble are.001 in. for a total of.025 in. One full turn indexes a.025 line to appear on the sleeve The horizontal lines above the vertical lines represents the vernier scale. The vernier consists also of ten divisions. This is where the final calculation will be made to give the overall measurement in.0001 inches. Vertical increments along the sleeve, each line is equal to.025 inches

14 The increment lines on the thimble are graduated in thousandths of an inch or.001. There are to total of 25 increments around the circumference of the Thimble. Each line is further marked 1 through 24 next to each horizontal line. Every 5th increment is marked with a larger number so counting can be done by fives As the thimble moves in and out along the measuring sleeve note the numbered and notched vertical lines appear on the sleeve directly next to the edge of the thimble. With the work piece tightened into positioned or removed with the ratchet stop set, a reading is now calculated.

15 15 Working in teams of 2, dial in your micrometers to a reading of.2507 inches. Once you have set your micrometer raise your hand.

16 16 Practical Exercise Phase II

17 17 Evaluation Phase III

18 18 Congratulations! You have fully mastered and are certified on micrometers. During the next week your supervisors will be observing you demonstrate your new skills in the production areas. They have been through this training and aware of what you were trained on. Contact us at any time if you have any questions. We will respond as quickly as possible Please let us know what you thought of today s training by completing the course evaluation form before leaving.