Abstract:

The paper presented a new testing method and a special testing device for measuring cutting-rate of saw-chains. The cutting-rates of German STIHL saw-chain, American OREGON saw-chain and domestic JL10 saw-chain were measured through operating the device. The force in the vertical forward movement orientation was kept equal when a chain saw was operated in the device. It kept a good coherency between the cutting area determining and the cutting time measuring. So it can improve the measuring precision of cutting-rate of saw-chains. The special testing device was noted for compact structure and small friction resistance to vertical forward movement with a high measuring precision, a good repetitiveness and a wide applicable range. So a good contrast could be obtained in measuring the cutting-rate of saw-chains through the special testing device.

Key words: Chain saw, Saw-chain, Special testing device, Cutting-rate