MM L7 MEASUREMENT Rev 1 PDF
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Uploaded by StylizedInfinity6900
Aston University
Dr David Upton
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Summary
This document explains precision measurement techniques, including line standards, end standards, micrometers, and digital calipers. It provides detailed steps for reading measurement instruments and discusses common errors in alignment. This is likely a part of a course on fundamental engineering principles.
Full Transcript
Week 7. Materials Fundamentals of Measurement- ME1MM1 Dr David Upton College of Engineering and Physical Sciences PRECISION MEASUREMENT EXAMPLES OF LINE STANDARDS : TAPE MEASURE & RULER END STANDARDS - BOXED SET OF SLIP GAUGES END STANDARDS : PRECISION END BARS MICROMETE...
Week 7. Materials Fundamentals of Measurement- ME1MM1 Dr David Upton College of Engineering and Physical Sciences PRECISION MEASUREMENT EXAMPLES OF LINE STANDARDS : TAPE MEASURE & RULER END STANDARDS - BOXED SET OF SLIP GAUGES END STANDARDS : PRECISION END BARS MICROMETERS 0-25 mm & 100-125 mm https://www.youtube.com/watch?v =O8vMFFYNIfo METRIC MICROMETER 0-25 mm RESOLUTION 0.01 mm STEPS IN READING 1. ENSURE THAT THE SLEEVE ZERO LINE LINES UP WITH THE THIMBLE ZERO LINE WHEN THE THIMBLE IS ROTATED CLOCKWISE AND THE GAP IS FULLY CLOSED 2. ROTATE THE THIMBLE ANTI CLOCKWSE AND LOCATE THE PART 3. READ THE MAIN SCALE – mm [ do not overtighten – ratchet clicks !] 4. READ THE 0.5 mm SCALE 5. READ THE THIMBLE SCALE 0.01 mm 6. ADD THE READINGS 3, 4, AND 5 DIGITAL CALLIPER 0-150 mm DIAL INDICATOR AND SLIP GAUGES MAIN SCALE 1 DIVISION = 0.001 mm 10 =.010 mm 1 REV OF POINTER = 0.100 mm Requirements : Mounting SMALL POINTERstand /clamp = Surface Plate Plunger 0.100, must be set 0.200 etc perpendicular to plate ERRORS IN ALIGNMEN T COSINE ERRORS
