PROPOSAL FOR NEW

LARGE CAPACITY CMM COORDINATE MEASURING MACHINE

1962 First CMM

DEA (Italy)

Ahmed CHERIF

CERN Metrology lab.CLIC TECHNICAL COMMITTEE – 03.05.2011

EDMS : 1146912

Ahmed CHERIF EN/MME-MM 2

OUTLINE

Overview of CMMs of the CERN Metrology lab. Today and future needs How to deal with a large capacity measurement

Example of DB girders Metrology of CLIC Modules: open questions Available long stroke machine on the market Adapted environment to be set up for large CMM Proposed solutions Figures (budget and schedule) Open discussion

03.05.2011

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OLIVETTI 4 AXIS

1600x900x600mm

FERRANTI 750x500x500mm

A. CHERIF 22 March 2011

CERN METROLOGY LABORATORY’S CMMs

LEITZ High accuracy

1200x1000x700m

m

Accuracy : ±

3 um

Accuracy : ±

3 um (+)

Accuracy : ±

0.3 +L/1000 um

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HISTORY

03.05.2011

LHCb

ATLAS

PS

COLLIMATEUR

CNGS

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TODAY

The present means are not in line with present and future CLIC requirements (for large capacity and high precision)

03.05.2011

OLIVETTI 4 AXIS

1600x900x600mm

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TREATMENT OF A REQUEST FOR LARGE CAPACITY MEASUREMENT

Measurement not feasible Measure with other means (less precise) Measured from two measuring stations

with an overlap and merging of the results

Measure with long probes and stylus to broaden measurement volume

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1St measurement 2nd measurementOverlap

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MEASUREMENTS DONE ON CLIC DB GIRDERS

21/03/2011

Support points are outside the machine table. Housing of the machine have been removed for the measurement

Both extremities of the girder are outside the measuring volume

Courtesy of Dominique PUGNAT

EN/MME-MM

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LONG PROBES USED

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360 mm

• Sphericity Error (typical) : 0.005 mm • With the used configuration : 0.012

mm.• Huge number of probes : 20 probes

were necessary

MICROCONTROLE & BOOSTEC GIRDERS

03.05.2011 Ahmed CHERIF EN/MME-MM 9

The LAB Test Modules layoutCurrent 2 Test Modules Type 0 installation (B169)

Concrete blocks for stretching devices

Cradle system

DBMB

DBMB

Courtesy of Anastasiya

Solodko /BE-RF

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CLIC MODULE

Final dimension of the CLIC Module

Characteristics to be measured

Required accuracy Accessibility of the

features to be measured

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New CMM mandatory to be defined as a function of :

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Ahmed CHERIF EN/MME-MM 1203.05.2011

From MPEE [um]= ± 2.3 + L/400 to MPEE = ±7 + 7 L/1000

Accuracy:

Measuring range :From 2 m up to 10 m

For 2 m : ±7.3 [um]For 4 m : ± 17.5 [um] For 6 m : ± 49 [um]For 10 m : ± 77 [um]

Different types of machines available depending on required measuring range and accuracy

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INPUT TO DEFINE THE RIGHT MACHINE

Technical criteria Overall dimensions of the parts to be measured Features to be measured Needed accuracy Number of components to measure Measuring time to be minimized? Weight of the module

Environment to be provided Complementarity with BE/ABP-SU Are other CLIC experiments or detector

applications interested in such machine?

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MEASUREMENT LABORATORY

Temperature stability Size of the laboratory (Height = vertical T

gradient)

Machine weight Admissible load on the ground Civil-engineering? Handling devices Vibration stability …

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PROPOSED SOLUTIONS

The accuracy is linked to the measuring volume:

Option A: Machine capacity : 2.4 metres Accuracy : 5 to 10 micrometres Minimum surface of the laboratory: 50 to 70 m2,

3.8 m height, service temperature of 20 °C ± 1 K.

Option B: Machine capacity : 4 metres Accuracy : 15 to 20 micrometres Minimum surface of the laboratory : 80 to 100 m2,

5 m height, service temperature of 20 °C ± 1 K.

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BUDGET & SCHEDULE

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Pos.

Description Option A Option B Comments

1Measuring machine

410 K€ 420 K€

2 Laboratory 310 K€ 350 K€3 Handling device 80 K€ 80 K€4 Civil-engineering - 100 K€ Only for option B

5 Contingency 80 K€ 95 K€10 %

(of pos.1 + 2 + 3 + 4)

TOTAL (€) 880 K€ 1045 K€

TOTAL (CHF)~1 144 KCHF

~1 360 KCHF

(rate: 1.30 CHF=1€)

Description Machine LaboratoryStudy of the final technical requirements

3 weeks 3 weeksContact with the different firmsTechnical specificationsMarket survey 4 weeks 4 weeksFirm visits and tests 4 weeks -Invitation to tender 6 weeks 6 weeksConstruction / delivery 30 weeks 12 weeksInstallation / calibration 4 weeks 4 weeksReception tests 1 week 1 weekInternal tests and training 4 weeks 4 weeksTOTAL 56 weeks 34 weeks

Bu

dg

et

Sch

ed

ule

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THANK YOU FOR YOUR ATTENTION

Questions and/or Comments are welcome

Decision ?

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ANNEX

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OTHER APPLICATIONS

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ZEISS ACCURA

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LEITZ PMM-F

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LEITZ PMM-G

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DEA GLOBAL

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DEA LAMBDA

03.05.2011