Recently the metal-bonded diamond tools have been found dramatic applications for the processing of natural stone in civil engineering. Although, significant improvement in tool performance have been made, however diamond tools are still the main factor in order to achieve the economic and optimum sawing conditions.
The influence of machining parameters on diamond tool wear during sawing a kind of granite stone belongs to Kezab region of Yazd city in Iran was investigated. A machine tool was designed and made for this purpose. A series of tests were scheduled. The radial wear of the saw-blade was measured by using a micrometer at the end of experiments. The cutting forces during sawing were measured with using of mechanical dynamometer.
The results show that with the increase of feed rate the tool wear reduces. This may be due to the reduction of cutting forces and/or the reduction of cutting temperature. On the other hand, with the increase of cutting speed the tool wear also increases. This may be because of rising the temperature and mechanical impacts during machining. These factors affect on the diamond grains and the cobalt binder of the segments.
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