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DEVELOPMENT OF A SPEED-STROKE GRINDING SYSTEM FOR ENHANCED MACHINING OF ADVANCED CERAMICS

Objective


GRICERAM has developed a grinding system for rough machining of advanced ceramics that addresses the requirements for efficient manufacturing of ceramic components:
Grinding process is adapted to specific properties of speed-stroke grinding
Reduced machining time due to higher material removal rates
High workpiece quality by reduction of thermal load
No additional subsurface damage even at high material removal rates
Suitability for flat and profile grinding.
Enhanced reliability, resulting from better surface quality and a reduction of component costs, due to the improved manufacturing techniques should lead to increased use of advanced ceramics. Energy efficiency and reduced emissions are among the significant environmental benefits that will arise. In most cases the problems associated with the industrial machining of ceramics are related to quality, time and economy due to the high hardness and compressive strength of the materials. Especially in SME's a high proportion of rough machining is used, mainly due to the limited access, for economic reasons, to the near net shape technology for specific products. To improve quality and to reduce machining time and costs, new machining concepts are necessary.

This project will develop a new machining technology. Speed-stroke grinding technology will achieve a cost- and time reduction and a surface quality enhancement in rough grinding of advanced ceramics. Speed-stroke grinding technology will feature very high workpiece speeds (up to 60 m/min) and small infeed rates and will allow efficient machining by an optimized chipping process. Grinding with large crossectional areas at the active cutting edge will reduce the grinding forces and thermal loads making the technology particularly suitable for the grinding of advanced ceramics. The new grinding system requires the development of a new table system, grinding tools and machine operating data. Using this technology the quality of the manufactured workpiece will be improved and polishing cost will be reduced. The technology will be introduced into the production line of an enduser, and advanced ceramic manufacturer.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

BLOHM MASCHINENBAU GMBH
Address
Kampchaussee 63-71
21033 Hamburg
Germany

Participants (5)

DIAMANT BOART SA
Belgium
Address
Av Du Pont De Luttre 74
1190 Brussels
Diamant Werkzeuge GmbH Hameln
Germany
Address
Hastenbecker Weg 8
31785 Hameln
FORBAIRT
Ireland
Address
Glasnevin
9 Dublin
SEAGOE CERAMICS LIMITED
Ireland
Address
Watson Street
BT63 5AH Portadown
UNIVERSITAET HANNOVER
Germany
Address
Schlo¯wender Strasse 5
30159 Hannover