Since July 2002 Buderus Schleiftechnik is taking part in the research
project ”Flexible high-performance-hard-finishing ("Flexible
Hochleistungs-Hart-Endbearbeitung", HHFlex)“, which
is supported by the Bundesministerium
für Bildung und Forschung (BMBF) via the project supporter
"Production- and Manufacturing Technologies" (Produktion
und Fertigungs-technologien (PFT)) of the research centre Karlsruhe
(Forschungszentrum Karlsruhe GmbH), Postfach 3640, D-76021 Karlsruhe,
Germany .
Together with the project partners DaimlerChrysler
AG (project coordinator), Ecoroll
AG, SAINT-GOBAIN
Diamantwerkzeuge GmbH & Co. KG., Heidelberger
Druckmaschinen AG, Oel-Held
GmbH, Seco
Tools GmbH and the laboratory for machine tools and business
("Laboratorium für Werkzeugmaschinen und Betriebslehre")
of the RWTH
Aachen possible process sequences for hard finishing are being
examined. For this reason, the techniques hard turning
and CBN-rough grinding in combination with hard burnishing for
the sequential and simultaneous machining of hardened, undulating
piece parts are combined in one machine.
Some of the targets of this research project can be resumed as
follows:
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Determination
of the process limits of the hard finishing techniques that
are to be integrated (individual techniques and in combination) |
|
Development
of appropriate comparison criteria for the evaluation of
processes / process sequences for hard finishing |
|
Completion
of an evaluation concept for manufacturing alternatives
of hard finishing |
|
Technological
and economical examination and selection of the alternative
process sequences for hard finishing |
|
Development
of a form element-related process strategy for hard finishing |
The definition of an appropriate range of piece parts is made
on the basis of the state-of-the-art technology of the techniques
involved, which are hard turning, CBN- rough grinding of cylindrical
surfaces and hard burnishing. From this the typical machinable
form elements, that undulating piece parts are composed of, can
be deduced. Form elements have to be seen here as geometric elements,
which can be marked with technological and functional attributes
(e.g. bearing seat, face, recess, radius, …).
Afterwards analogy tests will be performed with the new machine
concept for simultaneous treatment which has been developed by
Buderus Schleiftechnik. Parameter variations of the manipulated
variables relevant for quality and efficiency, are examined for
each single technique in order to come to a flexible high-performance
hard finishing.
The result of the analogy tests, is a definition of the limits
of each of the tested finishing techniques and the development
of appropriate process strategies and – conditions for the
treatment of individual form elements. The characteristics and
limits in the use of each technique and of each combination of
techniques is made comparable, specifically for each product,
using the evaluation scheme, developed beforehand, which is realized
by EDP.
Please ask for further information on HHFlex.
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