Abstract:
A sawing system is provided having a material conveyor for moving lengths of wood stock through the sawing system. According to one aspect of the invention, the material conveyor is preferably inclined upward from a frontal loading end to facilitate the loading of wood stock. The material conveyor is also preferably adjustable to accommodate different lengths of wood stock. According to another aspect of the invention, the sawing system has at least first and second power saws on one side of the material conveyor and at least third and fourth power saws on the opposite side of the material conveyor. Each of the four power saws is supported for independent angular movement of its saw blade about a pivot axis that is offset from the plane of the saw blade and parallel to the direction of the movement of the lengths of wood stock on the material conveyor. At least one of the first and second power saws is supported for horizontal movement relative to the material conveyor. At least one of the third and fourth power saws is supported for horizontal movement relative to the material conveyor. The pivot axis of each of the first and third power saws is positioned above the conveying plane of the material conveyor form making top angled cuts in the lengths of wood stock moved on the material conveyor. According to a further aspect of the invention, an algorithm is provided for computing a position of the power saws to make desired angled cuts in the ends of the lengths of wood stock.
Abstract:
An improved table for use in a truss assembly apparatus is provided. The improved table includes a frame supporting a plurality of panels that define a work surface. According to a first aspect, the plurality of panels are separated by at least one opening extending across the table. Mountings are provided for rotationally mounting a lead screw across the table along the opening between the panels. At least one jig stop carrier is threadedly coupled to the lead screw and movable along the lead screw in the opening between the panels across the table in response to rotation of the lead screw. A jig stop is connected to the jig stop carrier and to project above the work surface of the table. To vertically adjust the height of the jig stop mounted to the jig stop carrier, which is coupled to the lead screw, at least one threaded shank is fixed on each of the mountings. The threaded shank extends through an aperture in the frame of the table to selectively position the mountings on the frame. At least one threaded fastener is provided on each of the threaded shanks for securing the threaded shank to the frame at a selected position along the shank, whereby the mountings are releasably secured at a selected height so that the jig stops are operably associated with the work surface defined by the panels and to accommodate different thicknesses of panels. According to another aspect, adjustable metal end plates are provided to provide an easier baseline alignment for truss construction.