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

Topic: Coordinate measuring

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.

Coordinate measuring

Measuring jigContact probeMeasured componentTemperature sensor

Kinds of coordinate measuring machines According to construction:Single-coordinate measuring machines enable to measure only sizes in one axis

Bi-coordinate measuring machines enable to measure sizes in two perpendicular axis to each other in one level

3-coordinate measuring machines enable to measure sizes in 3 perpendicular axis to each other in space

3-coordinate measuring machines, their arrangementMain measuring device is 3-coordinate measuring machine (CMM Coordinate Measuring Machine). Measuring machine is characterised by 3 perpendicular axis to each other, called x, y and z.It is the system of:

Right-angled coordinates (3-lenght coordinate), cylinder coordinates (2 right-angled coordinates and one rotary axis)

Coordinate machine consists of these components:

Measuring machine (main machine unit, measuring bench(table), movable device, measuring and reading system

Computer for measuring process control and for result evaluation

Peripheral machine for data input and output

Measuring machineJoystickPC+ SW (QC 5000)Peripheral machine (printer)Contact probe

According to constructional components arrangement, coordinate measuring machines divide into:Boom machines:

Usage :

Heavy engineeringCar industry

According to constructional components arrangement, coordinate measuring machines divide into:Standing machines:

Usage :

Direct measuring in tool makingPrecise mechanics

According to constructional components arrangement, coordinate measuring machines divide into:Portal machines:

Usage :

Possibility of big table loadingReaching small measuring uncertainty

According to constructional components arrangement, coordinate measuring machines divide into:Bridge machines:

Usage :

For big measuring ranges in X-coordinate, e.g. 20000mm x 6000mm x 4000mm

Question 1:Describe the type of coordinate machine as you can see in the picture according to constructional components arrangement.

Question 2:Describe main components of coordinate measuring machine.

BUMBLEK, Leo. Kontrola a men. 1. Praha: Informatorium, 2009. 205 s.NENHLO, enk. Men geometrickch veliin. 1. Praha: MS, 2005. 207 s.Mic technika pro kontrolu jakosti. 1. Plze: MS, 2009. 162 s.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.

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