![Page 1: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/1.jpg)
CLIC
Mod
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08/2
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N. C
hrit
in (
EN
/MM
E)
Cradles design for CLICmodule supporting system
(EDMS 1158277)
General principleMain inputs an requirementsSuggested solutions for the alignmentAssemblingConclusion
![Page 2: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/2.jpg)
CLIC
Mod
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mee
ting
, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
s de
sign
for C
LIC
mod
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supp
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General principle
Girders Cradles Articulation pointsStandard active
motion devices
Modules trains (principle, different length...)Improvement of an existing deviceCradles(interface) and articulations point (degrees of freedom) are in-between girdersConsiderations: rigid girders, Vs exists and are well aligned...
=> Cradle and articulation point are important components
(...)(...)
Isolated activemotion devices
Beam axle
![Page 3: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/3.jpg)
CLIC
Mod
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, 22/
08/2
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N. C
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in (
EN
/MM
E)Cr
adle
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for C
LIC
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supp
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Main inputs and requirements
Beam alignment accuracy (±20µm)Radial and longitudinal efforts (500N)Girdersshort space, material, manufacturing, tolerances?Environment compact assembly (Height, widthDisplacement ranges (ΔZ= X=Δ ±3mm, Y=Δ ±0.4mm)Weight (max. 4000N/m)Assembling modular and simpleActuators overall volume
![Page 4: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/4.jpg)
CLIC
Mod
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mee
ting
, 22/
08/2
011
N. C
hrit
in (
EN
/MM
E)Cr
adle
s de
sign
for C
LIC
mod
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supp
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General principle(zoom on the articulation point principle)
Objective: beam axle = beam axle
Girder sub-assembly Articulationsub-assembly
Girder sub-assembly
No adjustment device in-between 2 girdersWe need to have less sub-assemblies as possible.Inside sub-assemblies, all red references should be well aligned together!
![Page 5: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/5.jpg)
CLIC
Mod
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mee
ting
, 22/
08/2
011
N. C
hrit
in (
EN
/MM
E)Cr
adle
s de
sign
for C
LIC
mod
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supp
ortin
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stem
General principle(Girder sub-assembly)
Accuracy not easy to obtain but the problem can be skirted around by using shims
MachiningAccuracy OK
Objective: V supports references and holes must be well positioned between them
Red references are important<->Metrological control needed!
Beam axle
![Page 6: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/6.jpg)
CLIC
Mod
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mee
ting
, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
s de
sign
for C
LIC
mod
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supp
ortin
g sy
stem
General principle(Articulation sub-assembly)
Objective: up and downstream holes must be well aligned.
<-> We assemble the 3 parts and we do the final drilling
Accuracy is OK (+/-0.01mm)
After that the 3 components of an articulation sub-assembly must stay
together!
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CLIC
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, 22/
08/2
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N. C
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in (
EN
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for C
LIC
mod
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supp
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Suggested solutions for the active alignment
Rectangular trapezium principle
45.5
mm
3mm
0.1mm (second-rat motion)
Degrees of freedom
![Page 8: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/8.jpg)
CLIC
Mod
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ting
, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
s de
sign
for C
LIC
mod
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supp
ortin
g sy
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Suggested solutions for the active alignment
Flexible components (blades) are used for kinematic pivot connections where we usually need standard pivots components
Example:-Blue square shape fixed-Red square shape connected to the cradle-70N radial force (2x for trapezium)-4000N vertical force-2.1mm radial displacement-750N/mm2 maximum stress in blades-Vertical movement is less than 0.05mm (compensated by the actuators)
Advantages:-High precision-No Friction (no stick-slip/Forces instantaneous transmission)-Good repeatability, suppression of the clearance and the hysteresis phenomenon-Monolithic component
![Page 9: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/9.jpg)
CLIC
Mod
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mee
ting
, 22/
08/2
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N. C
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in (
EN
/MM
E)Cr
adle
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sign
for C
LIC
mod
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supp
ortin
g sy
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Suggested solutions for the active alignment
Articulation device: 3 parts assembly
Extension area
Compression area
Stress with total load+1º flexion~650N/mm2
Degrees of freedom
Beam axle
Total extension with 4000N load =17µm
![Page 10: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/10.jpg)
CLIC
Mod
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mee
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, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
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sign
for C
LIC
mod
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supp
ortin
g sy
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Suggested solutions for the active alignment
Fitting cradle-girderBeam
Shims
![Page 11: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/11.jpg)
CLIC
Mod
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, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
s de
sign
for C
LIC
mod
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supp
ortin
g sy
stem
Suggested solutions for active alignment
Radial flexible component
Longitudinal flexibles components
![Page 12: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/12.jpg)
CLIC
Mod
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, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
s de
sign
for C
LIC
mod
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supp
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Assembling(Suggested sequence)
Male articulation unit
Female articulation unit
Girder longitudinal sliding
Girder vertical moving down
Screwed fastening
Pre-alignment ±0.2mm
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CLIC
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N. C
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in (
EN
/MM
E)Cr
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for C
LIC
mod
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g sy
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Assembling(details)
![Page 14: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/14.jpg)
CLIC
Mod
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mee
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, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
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sign
for C
LIC
mod
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Assembling(Module removing)
Articulation disconnection (2x)
Vertical actuators+supports have to be removed (2x)
Auxiliary support
![Page 15: CLIC Module meeting, 22/08/2011 N. Chritin (EN/MME) Cradles design for CLIC module supporting system (EDMS 1158277) General principle Main inputs an](https://reader035.vdocuments.mx/reader035/viewer/2022062500/5697bfa51a28abf838c97ef4/html5/thumbnails/15.jpg)
CLIC
Mod
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mee
ting
, 22/
08/2
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N. C
hrit
in (
EN
/MM
E)Cr
adle
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sign
for C
LIC
mod
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supp
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Conclusion(Needs, constaints and suggestion)
20µm expected precision should be reachedCradles have to be considered as an integral parts of a girderSystem compatible with Boostec and Epucert girders
Accurate machiningSpecific material usingMeticulous of pre-assemblingPre-alignment importantDifficulties to reduce the overall dimensionsGap in-between girder very shortWeight variation is a very high constraint (vertical compensation?)