2012.03.21, clic test module meeting status of the db quad adjustable support design mateusz sosin...
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2012.03.21, CLIC Test Module Meeting
Status of the DB Quad adjustable support design
Mateusz Sosin
CLIC Module WG Meeting, 22-May-2013
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
Alignment requirements
Mateusz Sosin Status of the DB Quad adjustable support design
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
DB Quad position adjustment using modified „hexapod-type” mechanism
According to reduced space for adjustable support integration Standard hexapod solution was changed to configuration with 3 supports in vertical and 3
supports in horizontal (that solution makes kinematics much simple for manual regulation purposes)
One supporting ‚leg’ length isn’t adjustable and is rigid longitudinally (according to Z), rest of supports has adjustable lengths (lj)
Concept:
Mateusz Sosin Status od the DB Quad adjustable support designMateusz Sosin Status of the DB Quad adjustable support design
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
Tight space constraints 14.5mm for „hexapod”
platform integration Small distance to V-supports Small distance to cradle (rear
DBQ) Instalation on the girder
Mateusz Sosin Status of the DB Quad adjustable support design
DB Quad adjustable support - integration
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable supportMateusz Sosin Status of the DB Quad adjustable support design
DB Quad adjustable support – main components
REAR STIFFENINGPLATE
VERTICAL ‚LEG’ ANDREGULATION UNIT
FRONT STIFFENINGPLATE (TRANSPARENT)
GIRDER ASSEMBLYFRAME
HORIZONTAL ‚LEG’ ANDREGULATION UNIT
DB QUAD PLATFORM
BOTTOM PLATES
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
DB QUAD PLATFORM
GIRDER ASSEMBLYFRAME
DB QUAD
VERTICAL ‚LEG’ ANDREGULATION UNIT
Problem of tight space solved by profiling of the DBQ platform ‚sockets’ profiling
Stiffness of Girder Assembly Frame Will be given by STIFFENING PLATES
DB Quad adjustable support – main components
Mateusz Sosin Status of the DB Quad adjustable support design
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable supportMateusz Sosin Status of the DB Quad adjustable support design
DB Quad adjustable support – assembly on the girder
Assembly to the girder using existing ‚bean’ holes’
Screwing to the GIRDER ASSEMBLY FRAME
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
DB Quad adjustable support – regulation components
5DOF regulation thanks to flexure based supports 3 adjustable in vertical 2 adjustable in horizontal + 1 support with constant length
Mateusz Sosin Status of the DB Quad adjustable support design
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
Wedge based regulation 30mm of wedge move = 2mm
of ‚leg’ stroke Expected resolution ~2µm Expected precision
(considering thread backlash) ~5µm
DB Quad adjustable support – vertical regulation unit
Mateusz Sosin Status of the DB Quad adjustable support design
Flexural vertical support with wedge-profiled head
Threaded wedge
Flexural vertical support sliding bearing
Wedge sliding bearing
Belleville spring stack Regulation screw
Regulation screwbearing unit
(2 flat needle bearings+ tightening screw)
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
DB Quad adjustable support – horizontal regulation unit
Mateusz Sosin Status of the DB Quad adjustable support design
Differential threadregulation screw
Flexural horizontal support.One end threaded
(as a part of regulation screw)DB Quad platform clamping block
Differential thread based regulation 20 revolution of screw = 2mm of
horiz.support stroke Expected resolution ~2µm Expected precision (considering
thread backlash) ~10µm
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
DB Quad adjustable support – longitudinal joint
Flexure based joint Blocks longitudinal displacements
of the DBQ platform Allows vertical and horizontal
displacements + rotations (within assumed range)
Mateusz Sosin Status of the DB Quad adjustable support design
Mateusz Sosin Concept of ‘hexapod type’ DB Quad adjustable support
DB Quad adjustable support – prototype development schedule, CLEX installation
Mid of March 2013 – begin of development works for DB Quad support (prototype should be ready and tested up to mid of July) Preliminary design (OK) Single ‚Vertical regulation unit’ and ‚Horizontal regulation unit’ machined and tested
(up to 14.06.2013) Update of the preliminary design after the tests of vertical and horizontal regulation
units prototypes. Machining of DB Quad support prototype up to end of July 2013 End of July 2013 tests of DB Quad adjustable support prototype. Update of preliminary
design to final version according to prototype tests (up to mid of August) Improvement of support performance, stiffness, mass (and price) optimization
Mid of August 2013 up to mid of September 2013 – T0 DB Quad adjustable supports procurement, parts machining and delivery
End of September/begin of October 2013: DB Quad adjustable supports - CLEX installation
Mateusz Sosin Status of the DB Quad adjustable support design