CHAIN WHEEL FOR CHAIN SAW (VERSIONS) AND METHOD OF ITS PRODUCTION Russian patent published in 2009 - IPC B27B17/08 B23D57/02 B23Q5/54 

FIELD: woodworking industry.

SUBSTANCE: inventions relate to the chain wheel design and method of its production. The chain wheel is moulded by the method of casting many items and is made with side walls distanced from each other and connected by circumferentially set teeth, they are also fitted with outer peripheral sections to support side chain saw links and inner peripheral sections where a splined drive shaft of the chain saw can be fitted to rotate the chain wheel. The above teeth are designed for receiving and gearing with shank ends of the central drive chain saw links and putting the cutting chain of the chain saw in motion. The outer and peripheral sections of the side walls are formed by endless peripheral rings. The side walls and the teeth are combined and form through openings passing through both side walls between the teeth and they are made so that to provide for the preset material weight depending on the square of the outer chain wheel surface and amounting to approximately 4-1 g per square inch of the surface square. The outer and inner support rings and teeth of the chain wheel are formed as highly-stressed critical sections and the connection sections - as not highly-stressed sections of smaller thickness.

EFFECT: ensuring reduction of defective item percentage, amount of the material used, cost and weight of the item.

6 cl, 15 dwg