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Metrology and Measurements

by Anna SuperkingsAnna Superkings
Type: PracticalInstitute: ANNA UNIVERISTY Specialization: Mechanical EngineeringOffline Downloads: 2Views: 58Uploaded: 4 months ago

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Anna Superkings
Anna Superkings
Department of Mechanical Engineering ME6513 - METROLOGY AND MEASUREMENT LAB LABORATORY MANUAL Name : ……………………………………… Register No. : ……………………………………… Branch : ……………………………………… Year & Semester : ……………………………………… 1
CONTENTS S.NO. DATE EXPERIMENT NAME 1 Calibration of outside micrometer 2 Calibration of vernier height gauge 3 Mechanical Comparator 4 Calibration of vernier caliper 5 Angle of taper rod using sine bar 6 Angle of taper rod using sine center 7 9 Angle of V-block optical bevel protector Measurement of spur gear tooth dimensions Vibration Set up 10 Displacement using strain gauge 11 Measurement of screw thread using profile projector Vibration set up 8 12 13 14 Measurement of straightness and flatness using auto collimators Force measurement 15 Temperature measurement 16 Tool maker microscope 3 PAGE NO. SIGNATURE
Ex No: CALIBRATION OF OUTSIDE MICROMETER Date : Aim: To calibrate the outside micrometer using slip gauge Instruments Required: 1. Micrometer stand 2. outside Micrometer 3. Slip gauge Specifications: 1. Outside micrometer Range =0 - 25mm Graduations=0.01mm Description: Outside Micrometer It is used for checking the thickness of the square Rectangular and circular round balls. It is consists of various parts such as anvil spindle frame thimble ratchet. Procedure: 1. The micrometer is checked for zero error. 2. The given slip gauge is held between the faces of the anvil and spindle. 3. The spindle is moved by rotating the thimble until the anvil and spindle touches the surface of the component. 4. Fine adjustment is made by ratchet. The main scale reading and thimble scale reading are noted. 5. Two are more reading are taken at different places of the component. 6. The readings are tabulated and calculated. 4
Tabulation: Least count=0.01mm Range = 0 - 25mm TR = MSR+ (TSC x L.C) MICROMETER READINGS S.NO MSR (mm) TSV TSR (mm) TR (mm) Model Calculation: Main scale reading = mm Thimble scale coincides = Total reading = MSR+ (VSCXLC) Error= Measured value – True value 5 SLIP GAUGE READINGS (mm) ERROR (mm)

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