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Anglicky v odbornch pedmtech"Support of teaching technical subjects in EnglishTutorial:Engineering metrology

Topic: Workshop gauges

Prepared by: Ing. Pavel Roek

Projekt Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002je spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk republiky.

Workshop gauges

Final lengthBasic gauges, limit calibres, measuring mandrels, referential (setting) rings etc.

Linear lengthSteel gauges, survey areas, steel coiling meters etc.Described measures of length

Slide callipers represent large group of simple gauges.There belong slide callipers, slide depth gauges and slide altimeters.They are universal, they are used to shaft and hole diameters measuring, distance, pitch and depth measuring, and also to geometrical deviation measuring.Slide callipers

Slide calliper with vernierVernier difference is 0,1 mm, 0,05 mm or 0,02 mm.

Slide callipers with dial deviation indicatorScale division of circular dial is 0,05 mm, 0,02 mm or 0,01 mm.

Digital slide calliperhas electronic measuring system, measured value is read on display with digital reading 0,01 mm.

Digital slide depth gauge

Slide calipers

Altimeters are devices with vertical measuring axis,

Slide altimeterused for undemanding control operations and for scribing too,

Universal altimeterused at demanding checking of difficult, box parts. They enable to evaluate measuring results in 2 coordinates.Height gauge - Altimeters

Gauges for measuring inside and outside sizes. Measuring element is micrometric bolt (measuring spindle).

Snap micrometer- measuring extent is 25 mm,- measuring force is from 5 N to 10 N,

Types of snap micrometer:- wire micrometers ,- thread micrometers,- tooth micrometers

Micrometer with dial deviation indicator(pasameter)

Micrometer gauge

Self-centring dual-contact cavity gauge (for accurate measuring inside holes)

Self-centring three-contact cavity gauge

Digital cavity gauge (for accurate measuring inside holes)Other types of micrometer gauges

They are gauges - stroke of measuring rod converts by gear mechanism to deviation indicator scale.In accordance to transmission mechanism , they divide into:- Deviation indicators with mechanical gear,- Deviation indicators with mechanical-optical gear,- Deviation indicators with pneumatic transmission,- Deviation indicators with electric transmission

Deviation indicators

Dial deviation indicators are used for:

Measuring of controlled deviations compared with nominal or set dimension

Measuring of shape and position deviations (peripheral and frontal offset)

Setting of components to required position at metalworking or measuring

Deviation indicators

Measuring bench (table)for dial deviation indicators, toggle deviation indicators, indicators and measuring probes

Machine for peripheral throwing controlfor quick and easy control of peripheral offsetMeasuring supports

Question 1:

Name at least 3 slide callipers and describe their usage in practice.Question 2:What is the machine for peripheral offset control used for?

NENHLO, enk. Men geometrickch veliin. 1. Praha: MS, 2005. 207 s.

Mahr, MINIKATALOG VROBN MIC TECHNIKA

Translation:www.seznam.czwww.slovnik.czJANATA, Petr. Handy slovnk technick anglicko-esk a esko-anglick. Plze: Nakladatelstv Fraus, 2000. ISBN 80-7238-075-3Lingea LEXIKON 5, Technick slovnk anglicko-esk a esko-anglick. 2010.

Literature