SAW BLADE Russian patent published in 1999 - IPC

FIELD: cutting tools. SUBSTANCE: this is intended basically for sawing wood and can also be used in metal working. Saw blade is made with teeth having two main surfaces and one auxiliary surface. Auxiliary surface is of special configuration. It crosses external side surface of tooth with resulted creation of two peaks. One of main surfaces is made with bevel in direction towards internal side surface of tooth. Other main surface is made with bevel in direction towards external side surfaces of tooth. Auxiliary surface is made with bevel in direction towards bevels of main surfaces. Application of aforesaid embodiment of saw blade allows for reduction of cutting force and friction force during process of sawing. It increases productive capacity, prolongs service life of tool, and ensures self-sharpening of teeth in process of operation. EFFECT: higher efficiency. 3 cl, 4 dwg