G. Negrini

ADVANCED SYSTEMS
Tomelleri S.r.l. ® Copyright 2007 ©
TOMELLERI s.r.l. started its activities back in 1984, developing
projects (feasibility studies and designs) in astronomy and
other sectors (such as machine tools, measuring machines,
robotics, etc). Since 1995 has also made supplies in the field
of Subsystems of Telescopes and Instruments, and other
products as a result of the research in different fields with
many patents filed.
Tomelleri’s facility in Villafranca (VR) - Italy
2
FEASIBILITY STUDY AND EXECUTIVE DESIGN
At present, TOMELLERI provides research, feasibility studies,
design and workshop drawings using CAD systems (Pro-E,
AutoCad 2009, Inventor), programs for structural calculations
(ANSYS Design Space, Solidworks), as well as dynamic system
simulation tools (MATLAB & SimuLink).
Design and supply of the electrical and electronic parts,
hardware and software, are also carried out.
High precision X-Y Stage
TOMELLERI
FEA of hydrostatic pad
3
ARTICULATED ARM MEASURING MACHINES
Portable Articulated Arm
Articulated Arm on Table
TOMELLERI
4
PHOTOGRAMMETRY MEASURING SYSTEMS
Standard photocamera for car testing
TOMELLERI
5
3D CALIBRATION SYSTEMS FOR MACHINE TOOLS
Calibration system for Machine Tools and Accessories for
increasing of certified accuracy in all the working field
and in all directions with optimization of the accuracy
index chosen by the costumer.
The Mathematical Model, that includes Automatic Heads
and Rotating Tables, compensates also errors due to
temperature and combined movements of all axes.
TOMELLERI
Laser Tracker
6
TOMELLERI IN ASTRONOMY
TOMELLERI s.r.l. has been and still is involved in major telescope projects
in relation to Bearing, Drive and Measurement Systems, as well as
Instruments and special devices, conceived in cooperation with the main
Italian Astronomical and Astrophysical Observatories (e.g. Arcetri,
Padua, Rome, Bologna, Merate, Capodimonte), the European Southern
Observatory, the Max Planck Institute, as well as some Observatories in
the USA, namely the Stewart Observatory in Tucson and the TMT
Observatory Corporation.
Most of the projects are then realized including: manufacturing,
accuracy test by CMM or by Articulated Arm Measuring Machines,
assembly, performance verification, that can be performed with
appropriate Test Benches if required. The TOMELLERI company has the
management of all activities, but in its facilities only assembling,
adjusting and testing activities are performed, while the workpieces are
machined by other companies.
TOMELLERI
7
TOMELLERI cooperates with FORMENTI company, based in Verona,
for the machining of most pieces of our production, equipped with
horizontal and vertical lathes, boring and milling machines, machines
for drilling , grinding, as well as measuring machines for testing the
pieces.
Formenti’s workshop
8
SOME SUPPLIES IN ASTRONOMY
• Feasibility study of the Support, Drive and Measurement
system for TNG (Telescopio Nazionale Galileo).
• Feasibility study, design and production of the Support, Drive
and Measurement systems for the LBT Project (Large Binocular
Telescope).
• Feasibility study and design of the Support, Drive and
Measurement systems for the Radio Telescope of the VLBI
Project.
• Feasibility study, design and production of the Hardpoints for
the M1 mirror of the MMTC and MAGELLANO Telescopes.
• Design of the Hardpoints for the M1 mirror of LBT.
• Design of the Drive units for the Positioning of the De-rotator
for the VLT (Very Large Telescope).
• Design and production of the mechanics of the LBT Test
Camera.
TOMELLERI
9
• Feasibility study, design and production of the mechanical parts
of the NIRVANA instrument (GLWFS) for LBT.
• Feasibility study, design and production of the mechanics of the
GIANO instrument for the TNG.
• Feasibility study of the Hydrostatic Bearing System, Driving
System, Measuring System and Auxiliary Units of the European
Extremely Large Telescope (E-ELT).
• Feasibility study, design and production of the mechanical parts
of the MAD@VLT.
• Feasibility study, design and production of the mechanical parts
of the GROUND LAYER@LBT.
• Feasibility study, design and production of the IQUEyE for NTT.
• Feasibility study, design and production of the whole main
mirror support system for VST.
• Feasibility study and design of the Hydrostatic Bearing System of
the Thirty Meter Telescope (TMT).
TOMELLERI
10
HYDROSTATIC BEARING SYSTEMS
In relation to the Hydrostatic Bearing Systems TOMELLERI provides
research, feasibility studies, design and workshop drawings using CAD
systems, programs for structural and thermal calculations, as well as
dynamic system simulation tools.
Thanks to our experience in the astronomy field, the hydrostatic
supports and the related HBS have been developed for specific
telescope requirements, which led to new solutions and patents.
The most part of the pieces are manufactured at FORMENTI’s facilities,
that has expertise in the accurate working of the pads with suitable
machines and tools, while assembly and testing are performed in our
facility including performance verification. Accuracy tests are carried
out by third party with CMM.
Design and supply of the Oil Control System, piping, electrical and
electronic parts, hardware and software, are also carried out.
Delivery and on site assistance can be provided when requested.
TOMELLERI
11
Technical characteristics
SUPPORTS:
• High static stiffness
• High dynamic stiffness
• Frictionless tilting capability
• High reliability
• Low temperature differences even with high pressure
• Low power consumption
• Bronze pads glued and screwed
• Internal oil recovery
• Special slave pad with springs and auxiliary cylinder
• Pressures monitored in all pockets
• Tilt measurement
• Temperature monitored in the oil and in the pad
TOMELLERI
12
SUPPLY AND CONNECTIONS:
• Constant pressure supply and laminar resistances
• Good load sharing on all supports among master and slave pads
• Free load definition on slave pads
• High errors admitted on the journals
• High static and dynamic stiffness on the altitude axis
• Intrinsic good load distribution and centring of the altitude axis
• High errors admitted in the tracks and in the pintle bearing
• High static and dynamic stiffness on the azimuth axis
• Intrinsic good load distribution and centring on the azimuth axis
• Low power consumption in the supply system
• Temperature control system
• No vibrations, instability or disturbance
• Active seals
TOMELLERI
13
Master pad
TOMELLERI
14
HBS supplies
• Design and production of Hydrostatic Bearing System for large
Machine Tools and Rotating Tables
• Design and production of Hydrostatic Bearing System for special
Testing Machines
• Production of parts of water hydrodynamic bearings
• Design of hydrostatic bearing system for spindles of Machine Tools
• Design of the Hydrostatic Bearing System and supply of the Oil
Control System of the TNG (Telescopio Nazionale Galileo)
• Feasibility study, design and production of Hydrostatic Bearing
System of the LBT Project (Large Binocular Telescope)
• Feasibility study of the Hydrostatic Bearing System of the European
Extremely Large Telescope (E-ELT)
• Feasibility study and design of the Hydrostatic Bearing System of the
Thirty Meter Telescope (TMT)
TOMELLERI
15
LBT azimuth
support
TOMELLERI
16
LBT Hydrostatic Control Panel
TOMELLERI
17
Hydrostatic Bearing System of the
Large Binocular Telescope (LBT)
TOMELLERI
18
Feasibility Study of Hydrostatic Bearing System for
E-ELT
TOMELLERI
19
Hydrostatic Bearing System of the
Thirty Meter Telescope TMT
TOMELLERI
20
LBT Prime Focus Red Channel Camera
TOMELLERI
21
TNG Giano infrared instrument: mechanical design
TOMELLERI
22
Nirvana GLWFS instrument: mechanical design
TOMELLERI
23
MAD@VLT
TOMELLERI
24
LBT M1 Bell Jar Locking Device
TOMELLERI
25
LBT Instruments Locking Device
TOMELLERI
26
LBT Azimuth Rim Gear
TOMELLERI
27
LBT Stow Pins
TOMELLERI
28
LBT Prime Focus Blue Channel Camera
TOMELLERI
29
LBT - Test Camera: design
TOMELLERI
30
LBT - Test Camera: supply
TOMELLERI
31
LBT - Test Camera: integration
TOMELLERI
32
LBT Main Axes Drive Unit
TOMELLERI
33
MMT and Magellan
Telescopes main mirror
hardpoints
TOMELLERI
34
Magellan main mirror hardpoint
TOMELLERI
35
Magellan 2 - main mirror hardpoints
TOMELLERI
36
LBT M1 Mirror Hardpoint
TOMELLERI
37
ALMA azimuth and altitude stow pins
TOMELLERI
38
Ultra Precision Translation Stage
TOMELLERI
39
HARPS Secondary Guiding
TOMELLERI
40
GLWFS for NIRVANA
TOMELLERI
41
VST M1 Support sub-systems: design & supply
TOMELLERI
42
Measuring of the VST Mirror Cell
TOMELLERI
43
Axial Fixed Point on the Test Bench
TOMELLERI
44
VST Lateral Fixed Point on the Test Bench
TOMELLERI
45
VST M1 Cell Support System: design & supply
46
TOMELLERI
VST M1 Cell Support System: design & supply
TOMELLERI
47