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Metrology

Metrology. Instructor: Prof. Kanakuppi Sadashivappa, Department of Industrial and Production Engineering, BIET Davangere. In today's world of high-technology products, the most important requirements of dimensional and other accuracy controls are becoming very stringent as a very important aspect in achieving quality and reliability in the service of any product in dimensional control. Unless the manufactured parts are accurately measured, assurance of quality cannot be given. In this context, the course deals with the basic principles of dimensional measuring instruments and precision measurement techniques. The course begins with the basic concepts of metrology and measurement standards. Then, linear, angular, geometrical shape metrology along with interferometry techniques and various types of comparators are explained in the subsequent modules. Concepts of limits, fits and tolerances and surface finish measurement, screw thread and gear measurements are also presented in detail. Finally, the course deals with metrology of machine tools and advanced metrology respectively. (from nptel.ac.in)

Lecture 18 - Perpendicularity Measurement


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Introduction
Lecture 01 - Introduction to Metrology
Lecture 02 - Metrology Terminologies
Lecture 03 - Measurement Errors
Linear Metrology
Lecture 04 - Linear Measuring Instruments: Angle Plate, Steel Rule, Spring Calipers
Lecture 05 - Linear Measuring Instruments: Combination Set, Vernier Calipers
Lecture 06 - Linear Measuring Instruments: Height Gauge, Micrometers
Lecture 07 - Linear Measuring Instruments: Micrometers, Bore Gauge
Lecture 08 - Linear Measuring Instruments: Dial Indicators, Thickness Gauges, Depth Gauges
Limits, Fits and Tolerances
Lecture 09 - Manufacturing Tolerances and Fits
Lecture 10 - Terminologies of Limits, Fits and Tolerances
Lecture 11 - Numerical Problems on Fits and Tolerances
Lecture 12 - Selection of Fits, Geometrical Tolerances
Lecture 13 - Positional Tolerances
Lecture 14 - Limit Gauging
Lecture 15 - Limit Gauging (cont.)
Lecture 16 - Design of Limit Gauges
Measurement of Straightness, Flatness and Squareness
Lecture 17 - Measurement of Straightness, Flatness and Squareness
Lecture 18 - Perpendicularity Measurement
Measurement of Surface Finish
Lecture 19 - Basics of Surface Roughness
Lecture 20 - Surface Finish Parameters
Lecture 21 - Stylus Type Surface Measuring Instruments
Lecture 22 - Non-contact Type Surface Finish Measuring Instruments
Screw Thread Metrology
Lecture 23 - Screw Thread Production and Terminology
Lecture 24 - Measurement of Screw Thread Elements
Gear Measurement
Lecture 25 - Introduction to Gears
Lecture 26 - Measurement of Gear Elements
Miscellaneous Measurements
Lecture 27 - Angle Measurement
Lecture 28 - Angle Measurement (cont.)
Lecture 29 - Radius Measurement, Contact Angle Measurement
Interferometry
Lecture 30 - Basics of Interferometry
Lecture 31 - Interferometers
Comparators
Lecture 32 - Introduction To Comparators, Mechanical Comparators
Lecture 33 - Electrical and Electronic Comparators, Optical comparators
Lecture 34 - Pneumatic Comparators
Metrology of Machine Tools
Lecture 35 - Geometrical Tests On Lathe
Lecture 36 - Geometrical Tests On Pillar Type Drilling Machine
Advanced Metrology
Lecture 37 - Universal Measuring Machine (UMM) and Coordinate Measuring Machine (CMM)
Lecture 38 - CMM Probes and CMM Software
Lecture 39 - Feature Measurement using CMM, Laser Vision
Lecture 40 - In-Process Gauging and Control
Lecture 41 - Stage Position Metrology
Lecture 42 - Micro and Nano Stages, Nano Technology, Instrumentation
Lecture 43 - Optical System Design
Lecture 44 - Complex Opto - Mechanical Assemblies, Metrology Testing and Certification Services