Abstract:
The invention relates to surface-working of logs, such as pillars or beams, with a rotating cutting-edge unit (23). These days the working is done in such a way that the log to be worked is rotating. The efficiency is low in this case, especially with a long and crooked log. The hollow-rotor principle is adapted in the method according to the invention, where the log (1) is fed without rotation through the rotor (4). The revolving arms (7), fastened with joints to the rotor (4), press the rotating cutting-edge units (23) against the log (1). The cutting-edge units (23) are propelled by the rotating movement of the rotor (4). The rotational speed of the cutting-edge units (23) is regulated by changing the relative speed of rotation of the frame (5), in relation to the rotational speed of the rotor (4). The working depth is regulated by changing the position of the support (24) leaning against the log to be worked, in relation to the position of the cutting-edge unit (23). The position is changed in radial direction of the log. The cutting-edge units (23) are moved to the log (1) surface by connecting a part of the revolving arm (7) to the log (2) in such a way that a moment is created when the rotor (4) rotates. The moment strives to turn the revolving arm (7) away from the center of the log.
Abstract:
A piston cylinder mechanism (2) comprised in an apparatus operative by pressure fluid, and connected between two in relation to each other movable parts (1, 38), is arranged to resiliently yieldingly counteract movement between the parts (1, 38) in at least one direction. A pumping device (8) is arranged to put a fluid under pressure. The pumping device (8) is arranged to be operated by said relative movement between the parts (1, 38) and thereby build up said fluid pressure in an energy accumulator (17). The apparatus also comprises a fluid control device (9), designed to increase the volume and/or the pressure of fluid comprised in the piston-cylinder mechanism (2) by using the higher fluid pressure in the energy accumulator.
Abstract:
The invention relates to a barking device comprising a barking arm (1) and a barking tool (2) which is mountable in a tool seat of the barking arm. The barking tool comprises a convex mounting surface (13), while the seat surface (7) of the barking arm is concave. The barking tool is, with the aid of a connecting means, mountable in the tool seat and displaceable by rotating displacement. The connecting means comprises a screw (18) and a sleeve-like nut (21). The head (20, 23) of one of the connecting means parts (18, 21) is designed to prevent displacement and rotation.
Abstract:
A curve-shaped wood cutting machine for forming a curve-shaped wood beam into a circular cross-sectional wood beam, and a rafter used in a traditional Korean-style house. The machine includes a fixing device fixing the side of the wood beam, a temporary fixing device fixing the other side of the wood beam, a moving device moved laterally along the rails while inserting the wood beam into the moving device, a cutting device having cutting tools for cutting the wood beam, a diameter adjusting device for adjusting the diameter of the wood beam, a rotation device rotating the cutting device and the diameter adjusting device, and a lateral moving device moving the cutting tools in the lateral direction perpendicular to the longitudinal direction of the wood beam, so that the cutting tools move along the wood beam so as to produce a circular cross-sectional wood beam.
Abstract:
The present invention relates to a barking machine which comprises a frame (1), barking rotor (2), which is rotably mounted on the frame (1) and which barking rotor comprises a rotor frame (3), barking blades (4) mounted on the rotor frame (3), and a first power unit (5) mounted on the rotor frame (3) that is connected to the barking blades (T) for trnsferring the barking force into them. According to the invention in the barking rotor there is arranged an adjustment device (6) movable with respect to the rotor frame, and a second power unit (7) which is mounted on the frame (3) for transmitting the barking force via the first power unit (5) to the barking blades (4). This solution enables one to adjust the barking depth of the barking blades without stopping the barking rotor.