Method and calculating unit for curve sawing of a block in a cutting direction with at least a first circular saw blade. The method comprises determining a radius of the curve sawing, by measuring the curvature of the block in the direction of cutting; calculating a vertical inclination angle of the first circular saw blade in a vertical plane relative to the cutting direction in the block, based on the determined radius of the curve sawing; inclining the first circular saw blade with the calculated vertical inclination angle; and sawing the block in the cutting direction with the inclined first circular saw blade along the determined radius of the curve sawing.

Method and calculating unit for curve sawing of a block in a cutting direction with at least a first circular saw blade. The method comprises determining a radius of the curve sawing, by measuring the curvature of the block in the direction of cutting; calculating a vertical inclination angle of the first circular saw blade in a vertical plane relative to the cutting direction in the block, based on the determined radius of the curve sawing; inclining the first circular saw blade with the calculated vertical inclination angle; and sawing the block in the cutting direction with the inclined first circular saw blade along the determined radius of the curve sawing.

A portable sawmill which has an elongate central portion, at least one hinged foldable extension portion, laminated rails, detachable axle/wheel combinations, a tow bar, and adjustable legs. Spacers are received between each rail and the respective support structure for both the central portion and the extension portion, including one spacer a first portion of which is disposed between and attached to each rail and support structure of one of the central portion and the extension portion and a second portion of which is slidingly receivable between each rail and support structure of the other of the central portion and the extension portion as the extension is unfolded for use. A pull cable, when an actuation lever is engaged, effects pivotal movement of a cam to which another pull cable is attached for actuating the engine throttle for cutting wood. At least one other pull cable or other actuation member is attached to the cam to actuate at least one other device upon the actuation of the throttle.

A portable sawmill which has an elongate central portion, at least one hinged foldable extension portion, laminated rails, detachable axle/wheel combinations, a tow bar, and adjustable legs. Spacers are received between each rail and the respective support structure for both the central portion and the extension portion, including one spacer a first portion of which is disposed between and attached to each rail and support structure of one of the central portion and the extension portion and a second portion of which is slidingly receivable between each rail and support structure of the other of the central portion and the extension portion as the extension is unfolded for use. A pull cable, when an actuation lever is engaged, effects pivotal movement of a cam to which another pull cable is attached for actuating the engine throttle for cutting wood. At least one other pull cable or other actuation member is attached to the cam to actuate at least one other device upon the actuation of the throttle.

A sawmill includes a saw carriage and a swing saw which in turn has a circular blade and a drive shaft. The mill also includes a pair of ground engaging tracks. The saw carriage has a pair of posts/uprights each supporting an opposite end of a cross-frame, which incorporates a clamp at each end, and these can be tightened against one of the posts to stabilise the saw carriage. The saw cantilevers from the saw carriage such that the saw's drive shaft is to one side of the cross-frame regardless of whether the blade is in a vertical or horizontal cutting orientation. The carriage moves along the tracks to carry the saw to make cuts in the longitudinal dimension of a log. The saw is also arranged to move laterally along the carriage between the uprights to make cuts the lateral dimension of the log.

A machine for conical machining workpieces of wood and plastics has a support supporting the workpieces during feeding in a transport direction through the machine. Rotatably driven tools are provided to machine longitudinal sides of the workpieces extending in the transport direction. At least one of the rotatably driven tools is adjustable transverse to the transport direction. A tongue and groove guide guides the workpieces through the machine in transport direction. In a method for conical machining workpieces, the workpieces prior to or during feeding are measured in regard to the conicity to be machined. A form-fit element is produced on the workpieces and interacts with a counter form-fit element during feeding of the workpieces so as to guide the workpieces in transport direction. At least one of the rotatably driven tools is adjusted transverse to the transport direction during feeding of the workpieces based on the measured conicity.

A sawmill assembly comprising a bed, a carriage and a tilting device. The bed has a pair of substantially parallel rails that define a first plane, a first axis perpendicular to the first plane, and a second plane perpendicular to both the first plane and a longitudinal axis of the rails. The carriage is movably supported along the rails. The tilting device allows a user to adjust a tilt angle of the carriage in the second plane, relative to the first axis. Also disclosed are methods of adjusting a blade angle of the sawmill assembly, and methods of cutting a tapered piece from a workpiece material.

A sawmill assembly comprising a bed, a carriage and a tilting device. The bed has a pair of substantially parallel rails that define a first plane, a first axis perpendicular to the first plane, and a second plane perpendicular to both the first plane and a longitudinal axis of the rails. The carriage is movably supported along the rails. The tilting device allows a user to adjust a tilt angle of the carriage in the second plane, relative to the first axis. Also disclosed are methods of adjusting a blade angle of the sawmill assembly, and methods of cutting a tapered piece from a workpiece material.

A sawmill assembly comprising a bed, a carriage and a tilting device. The bed has a pair of substantially parallel rails that define a first plane, a first axis perpendicular to the first plane, and a second plane perpendicular to both the first plane and a longitudinal axis of the rails. The carriage is movably supported along the rails. The tilting device allows a user to adjust a tilt angle of the carriage in the second plane, relative to the first axis. Also disclosed are methods of adjusting a blade angle of the sawmill assembly, and methods of cutting a tapered piece from a workpiece material.

A sawmill assembly comprising a bed, a carriage and a tilting device. The bed has a pair of substantially parallel rails that define a first plane, a first axis perpendicular to the first plane, and a second plane perpendicular to both the first plane and a longitudinal axis of the rails. The carriage is movably supported along the rails. The tilting device allows a user to adjust a tilt angle of the carriage in the second plane, relative to the first axis. Also disclosed are methods of adjusting a blade angle of the sawmill assembly, and methods of cutting a tapered piece from a workpiece material.