Jahresbericht 2009 - Biba - Universität Bremen

Collaborative Research Centre 570
Distortion Engineering
The CRC 570 “Distortion Engineering”
focuses on engineering control for reasons
of distortion of steel components
during final heat treatment. One of the
many possibilities of distortion is shown in
the figure (right), where dishing, the characteristic
distortion behavior of a disk, is
illustrated. In this case the term distortion
engineering describes the engineering
ability to control the causes of distortion.
One outcome of the research is an
improved low-distortion or distortion-adapted
design and planning of manufacturing
processes. Another chance is
the compensation of occurring distortion
during manufacturing through controlled
use of existing distortion potentials. The
understanding of the CRC 570 is that
only a holistic view at the manufacturing
process (system-oriented view) can
successfully optimize the impact of
distortion.
Collaborative Research Centre 747
Process Chains for the Replication of Complex Optical Elements
The central concern of the Collaborative
Research Centre 747 is the provision
of processes and methods for the
technical manufacturing of metallic
micro components while considering
the essential aspects of the forming
process - from substance development
to component testing.
The CRC regards the entire process
chain from substance development to
optimization, from quality management
to production planning. Here, the challenges
lie in the accuracy, economics
and condensation of function.
During its research, the CRC 747 is
accompanied by an industry work
group, which is regularly informed
about the results. Annual meetings, but
also one-on-one interviews, assure an
active exchange between practice
and research.
Subproject B5
Quality Inspection and Logistic
Quality Control of Micro Technical
Production Processes
The foundation of this subproject is
the belief that a comprehensive quality
management is mandatory for process
chains in micro cold forming techniques.
The goal is to ensure the quality of produced
components on one hand and
process capability of the micro forming
process on the other hand. To achieve
this, a continuous concept for the analysis
of the component surface is being
developed, which captures the 3D form
of components during micro deep drawing
via digital holography, and processes
the data using new statistic methods
and artificial neural networks.
CRC 570 – B5
After almost nine years running, the
CRC 570 generated a lot of knowledge
about distortion. The main sources of
that knowledge are experiments, simulations,
material-analysis as well as interaction
and communication among
experts. In order to support distortion-sensitive
design and process-planning, the
available but distributed knowledge has
to be collected, structured and utilized in
an advanced knowledge- and planning-system.
For process-planning, the
knowledge will be documented in form of
recommended action guidelines.
(DFG, 01/2008 -12/2011)
Subproject C4
A Simultaneous Engineering Methodology
for Micro Production Technical
Process Chains
In addition to the inherent smallness
of the components, micro production
holds basic conditions for the design
of substance flow or the analysis and
assessment of process efficiency. In
this regard, the possible adaptability of
methods from the macro area needs to
be checked. The goal of this subproject
is the development of a method toolkit,
which allows for the draft, the analysis
and the assessment of alternative
scenarios in micro cold forming.
(all: DFG, 01/2007-12/2010)
CRC
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