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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
3
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
Ahmed CHERIF EN/MME-MM 4
HISTORY
03.05.2011
LHCb
ATLAS
PS
COLLIMATEUR
CNGS
Ahmed CHERIF EN/MME-MM 5
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
Ahmed CHERIF EN/MME-MM 6
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
03.05.2011
1St measurement 2nd measurementOverlap
7
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
Ahmed CHERIF EN/MME-MM 8
LONG PROBES USED
03.05.2011
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
Ahmed CHERIF EN/MME-MM 10
CLIC MODULE
Final dimension of the CLIC Module
Characteristics to be measured
Required accuracy Accessibility of the
features to be measured
03.05.2011
New CMM mandatory to be defined as a function of :
11
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
Ahmed CHERIF EN/MME-MM 13
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?
03.05.2011
Ahmed CHERIF EN/MME-MM 14
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 …
03.05.2011
Ahmed CHERIF EN/MME-MM 15
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.
03.05.2011
Ahmed CHERIF EN/MME-MM 16
BUDGET & SCHEDULE
03.05.2011
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
Ahmed CHERIF EN/MME-MM 17
THANK YOU FOR YOUR ATTENTION
Questions and/or Comments are welcome
Decision ?
03.05.2011
Ahmed CHERIF EN/MME-MM 18
ANNEX
03.05.2011
Ahmed CHERIF EN/MME-MM 19
OTHER APPLICATIONS
03.05.2011
Ahmed CHERIF EN/MME-MM 20
ZEISS ACCURA
03.05.2011
Ahmed CHERIF EN/MME-MM 21
LEITZ PMM-F
03.05.2011
Ahmed CHERIF EN/MME-MM 22
LEITZ PMM-G
03.05.2011
Ahmed CHERIF EN/MME-MM 23
DEA GLOBAL
03.05.2011
Ahmed CHERIF EN/MME-MM 24
DEA LAMBDA
03.05.2011