Granite cutting is a noisy and time-consuming process which up
to now has not been thoroughly analysed as an integrated process.
For example, while conventional cutting never exceeds 200mm in depth,
a more complete scientific understanding both of stone properties
and tool behaviour might well suggest ways to increase cutting depth.
Similar improvements in other areas would mean a more rapid and
efficient cutting process.
The objective of this project was to develop a system for the deep
sawing of hard granite, with cutting depths of up to 300 mm. Following
analyses of stone properties and of machine, tool and work-piece
vibration, the partners manufactured a prototype tool, including
a new conditioning system for segmented diamond tools and an improved
system for coolant supply to the stone interface. The new system
reduces noise emission by about 5-8 decibels compared to the standard
The project associated four industrial partners, three of which
were SMEs, representing the chain from diamond cutting tip to segment
to blade to sawing machine manufacturers, together with two research
groups. Partners say it was the first time such companies were able
to work together. The results will mean increased competitiveness
for European SMEs with strong world-wide export positions.