FIELD: agriculture.
SUBSTANCE: tool comprises two adjacent blades (2A, 2B) equipped with spaced-apart triangular or trapezoidal teeth (3A, 3B). At least one of these blades is movable and connected to the drive device. The drive device sets the blade in motion in two opposite directions, which provides through shifting cutting the wood entering between the said teeth (3A, 3B). The tool comprises means for controlling the drive device. Control means is made with the ability to detect the movement stops of the movable blade or movable blades due to its (their) locking during operation. The control means is also made with the ability of instant and automatic issuing a command to change the direction of rotation of the said drive device, and hence to change the direction of the said movement of the said movable blades and the spreading of the teeth (3A, 3B) of the adjacent blades (2A, 2B).
EFFECT: constructive implementation enables to improve the quality of technological process by elimination of stops while operation of the tool.
9 cl, 8 dwg
