PROGETTO DI RICERCA MANUNET2007
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PLM SYSTEMS |
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Pneumostatic Linear Motion Systems with structure based on new
generation materials
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Target of
this research activity is the development of a completely new linear
movement system based on the pneumostatic technology and a carbon composite
axis structure.
The
integration of 3 technologies, as pneumostatic, direct drives and composite
material represents itself the innovation of this research project and at
the moment we have no information about already existing equivalent
applications.
The project has been characterized by 2 different research sectors (a) and
(b) which are going to be joined together in the final prototype (c):
a) On
one side Mager, supported by the Turin Politecnico has developed new air
pad, performing a research about new materials (ceramics, carbon fiber), new
component (fixing glue, fixing tape) and new processes (micro-drilling.
Several air pad have been produced and tested in order to validate the
mathematic models performed by Politecnico. Mager manufacture an innovative
testing machine for air bearing. With this machine it is possible to
evaluate the main air pad characteristics (load, stiffness, consumption) and
the pressure distribution under the pad during the load phase.
Mager effort were dedicated also to realize the air pad with micro drilling,
producing nozzle with diameter lower than 0,2mm. Together with IDEC have
been realized also test dedicated to evaluate the displacement of the carbon
arm with different temperature and humidity condition.
b) The
company Idec dedicated its effort in the development of sliding surface made
in carbon fiber. The shape of the component, the dynamic stress, the studies
of bending and torsion deformation were very difficult and absolutely new
for these kind of application. Moreover, the geometric tolerance required
for the final application were very narrow and not on line with the past
production. Big effert has been dedicated to realize a process able to
guarantee linearity and planarity of max 0,5mm on beam
length. Idec has been supported by the Spanish research center Inasmet about
the research of damping effect on carbon fiber depending on stresses,
materials, fiber disposition. A long part of the research has been dedicated
also in the integration of carbon fiber + different material (Titanium,
Turcite, aluminum insert) during the manufacturing process. This
manufacturing process is absolutely new and resulted very satisfactory.
c) The
activities reported at point (a) and (b) permitted to the partner to realize
some prototypes of a X/Y system to
be dedicated mainly for the manufacturing industry of testing equipment
(ATEs Automated Test Equipments) for electronic SMD (Surface Mounted
Devices) and PCBs (Printed Circuit Boards) and components, and the
manufacturing industry for the handling of semi-conductor devices
(Pick&place equipments). Future target market has been also identified in
guiding systems for laser applications.
The use of new air-bearing permitted the reduction of the sliding gap with
benefit on the positioning precision. The carbon arm permitted a weight
saving of about 20% compared to an aluminum one.
Figura 1: air bearing measurement machine
Figura 2: air bearing with new generation materials
Figura 3: Carbon Fiber Beam after demoulding by IDEC
Figura 4: Assembled beam on X axis and with payload
Figura 5: Detail of Y carriage


