CIRCULAR SAW Russian patent published in 2017 - IPC B27B5/38 

FIELD: woodworking industry.

SUBSTANCE: circular saw comprises a cutting disk with teeth. Plates are placed in the saw teeth. Two high-frequency slots with three half waves with the same amplitude are formed on the disk surface. High-frequency slots are rotated at lead angle and positioned on the horizontal axis. In the axils of the circular saw teeth, thermal regulation dampers are symmetrically mounted. The saw blade has holes for torque transfer and saw fixing on the flange. Symmetrically from high-frequecny slots at an angle of 10° to 45°, four low-frequency slot with two half-waves are made associated with an adjacent half-wave of a large amplitude. Low-frequency slots are rotated at a delay angle equal to from 1° to 8°. Arrangement of high and low-frequency slots forms on the saw web alternating sections of compression, stretching and constrained equilibrium. The lead angle of advancing high-frequency slots is equal to from 1° to 15°. Thermal regulation dampers are offset relative to the vertical axis by an angle of from 1° to 5° and turned at a delay angle of from 2° to 10°.

EFFECT: increased saw stability, accuracy and operation quality, reduced aerodynamic noise and vibration.

10 cl, 1 dwg