01Lecture-p2-ch45

01Lecture-p2-ch45 - Manufacturing and Production Processes...

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Manufacturing and Production Processes ENGR 3190U – Lecture 01 – part 2 1. Metrology 2. Inspection Principles 3. Conventional Measuring Instruments and Gages 4. Measurement of Surfaces 5. Advanced Measurement and Inspection Techniques 6. In class video clips if time permits
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Measurement Procedure in which an unknown quantity is compared to a known standard, using an accepted and consistent system of units The measurement may involve a simple linear rule to scale the length of a part Or it may require a sophisticated measurement of force versus deflection during a tension test Measurement provides a numerical value of the quantity of interest, within certain limits of accuracy and precision
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Inspection Procedure in which a part or product feature, such as a dimension, is examined to determine whether or not it conforms to design specification Many inspections rely on measurement techniques, while others use gaging methods Gaging determines simply whether the part characteristic meets or does not meet the design specification Gaging is usually faster than measuring, but not much information is provided about feature of interest
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Metrology Defined as the science of measurement Concerned with seven fundamental quantities (standard units shown in parentheses): Length (meter) Mass (kilogram) Time (second) Electric current (ampere) Temperature (degree Kelvin) Light intensity (candela) Matter (mole)
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In manufacturing metrology, we are usually concerned with measuring a length quantity of a part or product Length and width Depth Diameter Straightness, flatness, and roundness, etc. Surface roughness
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This note was uploaded on 12/09/2010 for the course MECH ENG mech301 taught by Professor Yang during the Spring '10 term at UOIT.

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01Lecture-p2-ch45 - Manufacturing and Production Processes...

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