Abstract
Combination saws are widely used in stone cutting. In this work, the chip geometry model was established to deduce the relationship between diameter and depth of cutting with chip arc length and mean chip thickness. The wear morphology of the segment surface was observed by the scanning electron microscope. The purpose of this work is to reveal the mechanism of wear discrepancy and provide the theoretical foundation for the optimization of combination saw. The results displayed that the wear value of the small diameter circular saw blade is larger than that of the large-diameter circular saw blade. The worn state of the diamond can effectively reflect the sawing ability of the circular saw blade. The difference in the wear state of diamond particles on the segment is due to the difference in chip thickness and the contact length. The wear value of the segment in front and rear is roughly equal, and the increase in the distance between two particles will accelerate the failure of the diamond. For convenience to describe the phenomenon of the worn segment, the wear cycle was defined and described.
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