1 COORDINATE MEASURING MACHINE Zeiss-Prismo
Feb 06, 2016
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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