A computer-implemented method for controlling sawing of logs, including obtaining information of a timber lot configured to be produced from logs configured to be sawn, obtaining an optimization objective for a statistical optimization model configured to be used for producing the timber lot, and determining a sawing configuration including at least one sawing pattern for a saw, which sawing configuration is determined based on the optimization objective, which at least one sawing pattern is configured to be used for sawing the logs to timber of the timber lot. The disclosure further relates to a sawing controlling system and a computer program product performing the method.

A saw bar clamping mechanism, length measuring mechanism, system for measuring the length of a tree stem, feed roller mechanism, pin retention mechanism, and a tree processor attachment comprising at least one of the mechanisms and/or system is provided. The saw bar mechanism simultaneously unclamps a saw bar and releases a saw chain for convenient removal. The length measuring mechanism comprises a measuring wheel operable to extend and retract perpendicularly to a tree stem. The feed roller mechanism includes first-side and second-side rollers, and a bearing having outer and inner sides, the bearing being rotatably coupled at its outer side to the first-side roller and rotatably coupled at its inner side to the second-side roller, the bearing making angular contact. The pin retention mechanism includes a two-part collar fitting into a groove with interference for locking a nut received by the collar.

Embodiments relate to systems, methods, and apparatuses for shape sawing wood. Specifically, embodiments include an infeed with laterally displaceable positioning rolls and a longitudinal axis between the positioning rolls. The embodiments further include a saw box with a frame and a plurality of saws coupled with a plurality of vertical arbors within the frame. In certain embodiments, the frame is operable to move laterally or rotationally with respect to a horizontal axis of rotation.

Embodiments provide methods, apparatuses, and systems for cutting wood workpieces, such as logs and cants, into desired products. In various embodiments, after a log is chipped into a cant, the cant may be scanned and re-optimized based on the new scan data and information about the source log, such as simulated orientation parameters, a 3D model, and/or potential cut solutions. In other embodiments, data from multiple sensor types may be used in combination to detect splits in logs, cants, or both. Optionally, re-optimization and split detection techniques may be used in combination to improve wood volume recovery, value, and/or throughput speed.

Embodiments provide a pre-cut infeed system for a machine center, such as an edger. A pre-cut infeed system may include an infeed, one or more saws arranged along the infeed, and a scanner optimizer system. The scanner optimizer system may scan a workpiece and determine whether greater value can be obtained from the workpiece by cutting the workpiece transversely into two or more pieces upstream of the machine center. If so, the workpiece may be cut transversely by the saw(s) positioned along the infeed, and the cut pieces may be fed sequentially into the machine center.

Wood cutting and chipping equipment having saws and chippers mounted to an overhead support structure.

Embodiments provide a pre-cut infeed system for a machine center, such as an edger. A pre-cut infeed system may include an infeed, one or more saws arranged along the infeed, and a scanner optimizer system. The scanner optimizer system may scan a workpiece and determine whether greater value can be obtained from the workpiece by cutting the workpiece transversely into two or more pieces upstream of the machine center. If so, the workpiece may be cut transversely by the saw(s) positioned along the infeed, and the cut pieces may be fed sequentially into the machine center.

A machine and a method for controlling such a machine that includes a feeder unit and a sawing station, the feeder unit being located upstream the sawing station. The sawing station includes a first sawing unit including a set of first saw band(s) and a pair of first support rollers, and a second sawing unit including a set of second saw band(s) and a pair of second support rollers, wherein the location of each support roller is adjustable in the transverse direction. The support rollers are configured to engage the timber body. The method is characterized by the steps of feeding the timber body by means of the feeder unit into the sawing station during the timber body dividing operation. The pair of first support rollers engage the timber body, positioning the pair of second support rollers at an initial mutual distance correlating to the real width of the timber body, and decreasing the mutual distance between the pair of second support rollers during the timber body dividing operation until reaching. At the end of the timber body dividing operation, a final mutual distance between the pair of second support rollers correlating to the real width of the timber body minus the total thickness of the set of first saw band(s).

A computer-implemented method to provide a cutting pattern for a tree log to obtain wooden boards including a step of obtaining a three-dimensional model containing information about features of a structure of the log and/or about defects of the log. A step of computer-processing of the three-dimensional model, to determine the cutting pattern by optimisation of an objective function, comprises the use of a value map to compute the value of a virtual board having a minor face with set orientation and set dimensions, at a cross-section of the three-dimensional model. The value map, which correlates to the information about the features and/or the defects of the log, assigns to each point of the cross-section a value of a virtual board having its minor face centred at that point and having the set orientation and set dimensions.

Wood cutting and chipping equipment having saws and chippers mounted to an overhead support structure.