Experimental comparison of single and double scroll cutting patterns by using chisel cutting tools of chain saw machines

This study aims at comparing experimentally single and double spiral (scroll) cutting patterns and to see the possibility for replacing single spiral with double spiral in chain saw machines. Full-scale linear cutting tests are performed by using a chisel cutting tool used with chain saw machines. The tests are performed at line spacing of 5 mm and varying depths of cut per revolution by using a natural stone sample (travertine). Comparison criteria are normal force, cutting force, specific energy and size distribution of cuttings. The results indicate that although the tool forces are slightly higher in the double spiral cutting pattern, the specific energy is lower, which means higher production rates with lower costs. It is considered that replacing single with double spiral cutting pattern would improve the cutting performance of chain saw machines.