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COORDINATE MEASURING MACHINE

Zeiss-Prismo

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CMM PRODUCERS ZEISS

Prismo,Spectrum, UMM550, Contura, Vista, Eclipse

MITUTOYOLegex, Beyond Crsyta

BROWN & SHARPEGlobal, Scirocco

WENZEL

MAHR Zeiss-Vista

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CMM Producers Mitutoyo-Legex Brown & Sharpe

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WHY CMM High Accuracy

Universal and Flexible

Versatile in any Workpiece

Dimensions

Reverse Engineering

Reduce Measuring and

Setting-up Time

Allow Dimensional and

Geometrical Simultaneously

Zeiss - Vista

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BASIC PRINCIPLE OF MEASUREMENT

Measurements are made in a traversing frame with 3 orthogonal axis (X,Y,Z)

Displacement along the axes are read by length measuring system (Phocosin) and transferred to an electronic control cabinet

Function (Phocosin)to take measurement point determined by the probe

head & represent it in a Cartesian coordinate system

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Length-measuring systems (Phocosin)

These systems consist of incremental encoders using a grating scale as a measurement standard.

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DESIGN OF CMM

BRIDGE

HORIZONTAL ARM

GANTRY

ARTICULATING ARM

Gantry CMM Inspects Huge Auto Stamping Dies

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Moving Bridge architecture schematic

DESIGN OF CMM- Bridge

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Fixed Bridge architecture schematic

DESIGN OF CMM- Bridge

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DESIGN OF CMM- Gantry

Bridge architecture schematicZeiss – MTC (Gantry)

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DESIGN OF CMM- HORIZONTAL ARM

Horizontal arm architecture schematic

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DESIGN OF CMM- ARTICULATING ARM

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CMM-UMM550

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STRUCTURE OF CMM-UMM550

• Probe Head

• Compressed air unitMin requirement 5 bar

• X,Y,Z Measuring System (Phocosin)

• CMM Table – Granite

• X,Y,Z Motor

• Air Bearing - 6µm high air slit

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Principle of forming the measured value

The travel movements of CMM in all axes are recorded by incremental path measuring systems and store in a counter as position.

When a probing is made the measured value of each axis is formed from the position stored and the remaining deflection of the probe system

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Principle of forming the measured value

Correlation between probe head output,length measuring data, and resulting measurementvalue ( MC ) :MC = machine coordinate, PH = probe head output

The probe head does not have to be in the zero position during probing, as the deflection in a probe head axis is exactly copied in the length measuring system of the corresponding CMM axis

The probe head output and the CMM length measurement values are added in all 3 measuring axis.

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SOFTWARE

SOFTWARE

UNIX WINDOWS NT

• UMESS-UX

• SAM-UX-STAT

• KUM-UX-2D/3D CURVES

• HOLOS-UX-FREEFORM DIGITISING &

MEASURE

• GEAR-UX-SPUR & HELICAL

• G-BEVEL-UX-BEVEL GEAR

• CALYPSO –

GEOMETRY

• CC CURVE

• HOLOS - NT

DOS

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MEASURING SOFTWARE

1. UMESS UXMeasurement of 2D

2. KUM UXMeasurement of 3D CurvesDigitizing/Scanning

HOLOS CALYPSO

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TO ACTIVATE UMESS SOFTWARE FUNCTION

1. Pull down menu

2. Pictograms/Icons

3. Direct Input No.

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UMESS SOFTWARE FUNCTION

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Pull Down Menu-PROBE

- CALIBRATIONMaster Probe (MODE)

Measuring Probe (CLAMPED/UNCLAMPED)

CLAMPEDOne axis only free, depending on the probe direction

UNCLAMPEDAll axis are free to move (for 3D profile)

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Pull Down Menu-COORD

- ALIGNMENTRotate SpaceRotate Plane

- ZERO POINT

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Pull Down Menu-ELEMENTS

- FOR MEASUREMENT OR PROBINGGeometric Element –Need to be defined

SURFACELINECIRCLECONECYLINDERSPHERETORUSECLIPSE

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Pull Down Menu-CMM

- TO TRAVEL AT DEFINED POSITION(Auto Movement)

- TO TRAVEL AT MACHINE ZERO POINT

(Reference Points travel-Eg.X30,Y-30,Z-30)

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Pull Down Menu-CNC & EVAL

CNC- TO CREATE CNC PROGRAMEVAL- LINKAGE FUNCTION

FORMPOSITIONDISTANCE

(Cartesian,Polar,Perpendicular)

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Pull Down Menu-EVAL

INTERSECTION1. Line to Line2. Line to Circle3. Circle to Circle

SYMMETRY ELEMENT

DISTANCE

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Pull Down Menu-RECORD

- TO CREATE TEXTCustomerOperationInspectorProduct

- PRINTER MODE