Measurement devices Kalevi Aaltonen, Aalto University
Production engineering measurements, measuring uncertainty, measurement accuracy = statistical mathematical methods
The pyramid of accuracy Material standards Gauge blocks Reference spheres Ring gauges A c c u r a c y descending Micrometers, CMM, Pin gauges Calipers, Height gauges Steel rules Gauges
History of measurements Hand held measuring devices caliper micrometers gauge blocks dial indicators Measuring machines contour tracers roundness testers vision measuring systems coordinate measuring machine
History of measurements MANUFACTURING METHODS AND MEASURING METHODS WERE DEVELOPED SIDE BY SIDE LEONARDO DA VINCI S ENGINEERING LATHE SKETCH FROM 1500-CENTURY.
History of measurements MACHINETOOLS DEVELOPED MORE ACCURATE MORE PRECISE MEASURING EQUIPMENT WERE PRODUCED THE CHICKEN OR THE EGG CAUSALITY DILEMMA ELI WHITNEY S MILLING MACHINE 1820 -DECADE
History of measurements CONSEPT OF INTERCHANGEABLE COMPONENTS AND PARTS WAS INVENTED ARMS INDUSTRY WAS THE FORERUNNER IN USA COLT REVOLVER; SPARE PARTS IN THE COUNTRYWIDE SERVICE SYSTEM
History of measurements FIRST UNIVERSAL BORING MILL PRECISE AXIS MOVEMENT BELT DRIVE FROM LINE SAFT 1896
History of measurements MICROMETERS WERE THE FIRST HAND HELD PRECISION MEASUREMENT EQUIPMENT JAMES WATT (1772) INVENTED THE PEDESTAL MICROMETER JEAN LAURENT DEVELOPED PALMER S MICROMETER (1848)
History of measurements W. SMITH S MICROMETER (1876) BROWN & SHARP S MICROMETERS (1877) MODERN MICROMETER
History of measurements YEAR 1848 PROPRIETARY (PATENT PENDING) SYSTEM PALMER MICROMETER
History of measurements SVEDES DEVELOPED GAUGE BLOCKS AND MEASURING GAUGES C E JOHANSSON 1890 GAUGE BLOCKS ARE THE FOUNDATION OF ALL PRECISION MEASUREMENTS!
History of measurements Eskilstuna Tekniska Söndags- ochaftonskola, 1885
History of measurements IN HIS WORLD WIDE ROADSHOW CARL EDVARD JOHANSSON GAVE LECTURES HOW TO USE THE GAUGE BLOCKS AND HOW TO ENSURE CALIBRATION OF MEASURING EQUIPMENT
History of measurements DURING THE FIRST WORLD WAR MEASURING MASTER PIECES WERE ESSENTIAL NBS (NATIONAL BUREAU OF STANDARDS, NOW NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY (NIST)) MANUFACTURED THE STANDARD MASTER PIECES
History of measurements NUMERICALLY CONTROLLED MACHINE TOOLS MADE POSSIBLE TO MACHINE MORE ACCURATE AND PRECISE PARTS AND COMPONENTS
Hand-held measuring equipment VERNIER, DIGITAL, AND DIAL CALIPERS AND MICROMETERS ARE THE MOST IMPORTANT HAND-HELD MEASURING EQUIPMENT ACCURACY: 0,01 0,2 mm CALIBRATION IS IMPORTANT!
Caliper
Caliper
Caliper
Caliper
Caliper JAWS FOR INSIDE MEASUREMENT BODY SCALE DEPTH ROD (PROBE; BLADE) JAWS FOR OUTSIDE MEASUREMENT LOCK SCREW AND THUMB VERNIER SCALE LEVER
Digital Caliper
Caliper DIGITAL CALIPER AND DEEPNESS CALIPER
Caliper
Caliper
Caliper
Caliper
Caliper ABBE S PRINCIPLE: - CALIPER???? - MICROMETER, OK
Micrometer MEASURING FACES ANVIL SPINDEL SLEEVE SPINDLE LOCK MEASUREMENT STRIPE FRICTION THIMBLE FRAME ISOLATION PLATES THIMBLE SCALE TRIGGER DISPLAY
Micrometer EXTENSION ADAPTOR LOCKING LOCKING SPRING MEASURING FACE MEASUREMENT STRIPE FRAME BUSHING SCALE THIMBLE ROD TYPE INSIDE MICROMETER
Micrometer THREE-POINT BORE MICROMETER SUITS WELL TO MEASURE HOLE DIAMETERS AND GEOMETRICAL SHAPE ERRORS LIKE ROUDNESS ERROR
Micrometer DIGITAL MICROMETER
Micrometer THREAD- DISC- AND DEPTH MICROMETER
Micrometer MICROMETER HANDLE WITH TRIGGER HELPS AND SPEEDS UP HOLE MEASUREMENTS
Micrometer MICROMETER CALIBRATION RINGS, CONES, DISCS AND GAUGE BLOCK HOLDER
Micrometer MICROMETER CALIBRATION SET (GAUGE BLOCKS AND OPTICAL PARALLES)
Go and no go gauges HOLE AND SAFT GO AND NO GO GAUGES RATIONALIZE MEASUREMENT IN MASS PRODUCTION
Go and no go gauges WITH THREAD GAUGES YOU CAN ENSURE BOTH THE MEASURES, TOLERANCES AND FUNCTIONALITY OF THE THREAD
Go and no go gauges SHAFT GAUGE HAS GO AND NO GO MEASURING FACES
Go and no go gauges GAUGES MAKE MEASUREMENTS MORE PRODUCTIVE AND EASY TO PERFORM
Gauge blocks GAUGE BLOCKS ARE THE FOUNDATION OF THE MODERN CALIBRATION AND PRECISION MEASUREMENTS. THE INVENTOR OF THE GAUGE BLOCKS WAS C. E. JOHANSSON.
Gauge blocks GOOD OLD TIMES WHEN EVERYTING WAS BETTER!
Gauge blocks GAUGE BLOCKS IN ESKILS- TUNA GUN FACTORY 1890
Gauge blocks
Gauge blocks CALIBRATION OF GAUGE BLOCKS AND CHECKING THE PARALLELISM OF MEASURING SURFACES
Gauge blocks GAUGE BLOCK TOLERANCES ACCORDING TO STARDARD ISO 3650
Gauge blocks ACCESSORIES AND ATTACHMENTS TO GAUGE BLOCK MEASURING DEVICE
Gauge blocks GAUGE BLOCKS AND STONE MEASURING DEVICES MUST BE HANDELED WITH CARE; SERVICE AND MAINTENANCE CAREFULLY
Gauge blocks SINE BAR TO MEASURE ANGLES WITH GAUGE BLOCKS
Dial indicators DIAL INDICATORS, LEVER INDICATORS AND DIAL COMPARATORS ARE MOST COMMON HAND-HELD MEASURING DEVICES.
Dial indicators DIAL INDICATORS WITH DIFFERENT KIND OF AUXILIARY DEVICES ENABLES HOLE MEASUREMENT
Dial indicators PRECISION LEVER INDICATOR IS EASY TO USE. NOTE THE COSINE ERROR OF THE STYLUS.
Dial indicators
Dial indicators BASE OF THE DIAL INDICATOR MUST BE RIGID AND SOLID. MAGNETIC BASES ARE EASY TO USE
Dial indicators CALIBRATION OF THE DIAL INDICATOR WITH GAUGE BLOCK
Dial indicators MOST ACCURATE DIAL INDICATORS ARE CALLED DIAL COMPARATORS. BECAUSE OF SHORT MEASURING RANGE AND HIGH PRECISSION THEY ARE SUITABLE FOR HIGH ACCURACY MEASUREMENTS.
Dial indicators ELECTRICAL AND DIGITAL DIAL INDICATORS COMPLETE TRADITIONAL MECHANICAL DIAL INDICATOR MARKET
Dial indicators CONVENTIONAL DIAL INDICATOR, INDICATOR WITH EXTRA LONG STYLUS AND WATERPROOF DIAL INDICATOR
Dial indicators
Dial indicators MEASURING GROOVES AND THICKNESS REQUIRES SPECIAL DIAL INDICATORS
Dial indicators MEASURING THE RUNOUT OF A CAR BRAKEDISC WITH DIAL INDICATOR
Dial indicators MEASURING THE RUNOUT OF THE STEEL SAFT WITH DIGITAL DIAL INDICATORS
Dial indicators DIAL INDICATOR WITH TWO POINT MEASURING HEAD ENABLES MEASUREMENT OF DIAMETERS IN DEEP HOLES
Dial indicators THE STRUCTURE OF THE MEASURING DEVICE ASSIGNS THE ACCURACY NOT THE NUMBER OF DECIMALS IN READ-OUT
Dial indicators DIAL COMPARATOR SET UP MUST BE RIGID. DEVICE IS A MASTER PIECE OF PRECISION ENGINEERING.
Dial indicators PRECISION LEVER INDICATOR
Dial indicators COSINE ERROR OF THE PRECISION LEVER INDICATOR
Measuring devices Precision engineers square frame levels for high accuracy levelling
Gauge blocks CERAMIC GAUGE BLOCKS FOR HIGHEST ACCURACY. DESIGNED SPECIALLY FOR LABORATORIES, TEST ROOMS, CHECK MEASURING DEPARTMENTS, WHERE THE GAUGE BLOCKS AND OTHER VERY ACCURATE GAUGES ARE CALIBRATED EXPENSIVE, WEAR RESISTANT
Gauge blocks
Gauge blocks CERAMIC GAUGE BLOCK SET FOR CALIBRATING MICROMETERS PRICE: 1000 1500
Measuring devices MEASURING DEVICES MUST HAVE PROPER STORAGE BOXES AND GREASING WITH PROTECTION VASELINE IS IMPORTANT TO PREVENT RUSTING
Measuring devices ADJUSTABLE ANGLE BLOCK SET
Granite datum surface MEASURING PARALLELISM AND FLATNESS ON GRANITE SURFACE PLATE
Gauge blocks GEOMETRICAL FLATNESS MEASUREMENT RESULTS; GRAPHICAL ILLUSTRATION; UPPER AND LOWER TOLERANCE LIMITS INCLUDED
LESSONS TO LEARN: History of measuring is a long and interesting story Hightec products require hightec measuring devices and machines Calibers, micrometers, gauge blocks, dial indicators are commonly used hand held measuring equipment Wireless data transfer of hand held measuring devices gives new opportunities to create measurement protocols Measurement devices are expensive and sensitive; they require good care and maintenance Vita, si scias uti, longa est, Seneca (Life, if well lived, is long enough)
Acta est fabula. Plaudite! (Play is over. Applaud!) (emperor Augustus) 24.10.2016 Professor Kalevi Aaltonen Aalto University 78