DRIVE MECHANISM OF SAW FRAME (VARIANTS) Russian patent published in 2017 - IPC B27B3/00 

FIELD: wood industry.

SUBSTANCE: drive mechanism of the saw frame comprises a frame with fixed on it a crank mechanism with a crank, connecting rod, the saw frame and its guide. According to the first embodiment, the mechanism comprises an additional connecting rod and the rocker. Drawstring is disposed in the plane of movement of the saw frame and is connected with a crank rod of a crank mechanism. One end of the wing is pivotally connected to the swing axis mounted on the frame. The second end of the wing is pivotally connected with the additional rod of the saw frame. The distance from the axis of swing wings to mount additional connecting rod on the rocker axis is equal to or greater than the distance from the axis of reciprocating movement of the second end of the additional connecting rod in the dead points scenes rocking. According to the second embodiment, the mechanism further comprises a slider which is attached to the guide frame, and the connecting link. Drawstring is disposed in the plane of movement of the saw frame and is connected with a crank rod of a crank mechanism. One end of the wings is pivotally connected to the rocking axis, which is fixed to the frame. The second end of the wings interacts with the slider of the saw frame.

EFFECT: improved quality of cut.

2 cl, 2 dwg