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Dimensional Metrology and Quality Control - Research Projects
During the past five years
the research group on dimensional metrology at PMA has been
involved in the following national and international research
projects:
- MEDECOTHER: Measure, design and
compensation for thermal deformations
- ACCURAT: Accuarcy verification of
coordinate measuring machines, of all sizes, types and
configurations, using lasers and a universal artefact
- SEC&TEC: Static and quasi-static
errors measurement and compensation in milling machines
BRITE-EURAM Project no. 3545
| Partners: |
Zayer (E), Tekniker (E), Doimak (E), RWTH Aachen - WZL (D),
Krypton (B), KULeuven - PMA, Coord3 (I), Fidia (I), Goratu (E) |
| Objective: |
Reduce the thermal deformations of both machine tools and CMM's
through changes in design and by use of compensation methods. An
absolute optical measurement device to monitor deformations will be
developed. Different estimation algorithms will be compared to
select the one best suited for industrial purposes. The aim is to
develop a methodology to adjust the parameters of the algorithm for
each new machine with a test of less than 12 hours. |
| Period: |
01.01.97 - 31.12.99 |
| Contact: |
Prof.
J.-P. Kruth |
CRAFT Project SMT4-CT98-5517
| Partners: |
ITP Group (UK), I2T Intelligent Information Technology (UK),
Krypton (B), Coord3 (I), Lister Machine Tools (UK), Atlas Aluminium
(IR), Southampton Institute (UK), University of Limerick (IR),
KULeuven - PMA, Stanimuc (I) |
| Objective: |
The project addresses the urgent need to establish a new
international standard to define simplified procedures for
performance verification of coordinate measuring machines (CMMs) of
all sizes, types, and configurations, including articulated arm and
mobile, portable machines. The aim is to provide a test method
using the laser interferometer, which is not yet accepted by many
CMM users. The project deliverables will include the design of a
single, low-cost, universal artefact that can be used in
conjunction with the laser as a quick check device for performance
verification. Parametric verification techniques, using the laser
interferometer, are used to asess volumetric accuracy for a range
of CMM configurations. This also requires the design and
development of enhanced software, which is currently only available
for a restricted range of machine tools. |
| Period: |
01.02.99 - 31.01.01 |
| Contact: |
Prof.
J.-P. Kruth |
GROWTH Project no. G6RD-CT-1999-00122
| Partners: |
Fidia (I), Tekniker (E), Krypton (B), RWTH Aachen - WZL (D),
Nicolas Correa (E), KULeuven - PMA, Zimmerman (D) |
| Objective: |
The scope of the project is to move the improvements of
machining accuracy from a past "off-line" approach to an "on-line"
approach. The two main problems addressed are the geometric
precision of machine tools (SE), and the thermal drift of machine
tools (TE). For the latter issue, an on-line approach means that
the thermal errors are measured on-line, and the measured deviation
is fed back to the machine controller to compensate it. |
| Period: |
01.02.00 - 31.01.03 |
| Contact: |
Prof.
J.-P. Kruth |
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