Guiding mechanism for timber cutting machines
AssigneeKockums Industri AB
InventorSven E. Ostberg
Life of this patent
Estimating the term…
Abstract
A cutting machine fitted with saw blades for pieces of timber has, adjacent to at least one pair of outer saw blades, lateral guide devices, the position of which can be adjusted, and which ensure the guiding of a worked piece of timber when its rear end section has left the lateral guide devices before the saw blades on the feed side of the arrangement. The arrangement is suitable for simple sawing machines and for reducing and reducing-sawing machines, and is particularly advantageous for the working of curved timber.
Claims10
In a guide mechanism for timber cutting machines having a saw blade acting along a cutting axis in which a piece of timber is fed, a lateral infeed guide fixing the position of said piece of timber in a lateral direction substantially perpendicular to said cutting axis before said piece of timber reaches said saw blade, a lateral outfeed guide fixing the position of said piece of timber in a direction substantially perpendicular to said cutting axis after said piece of timber has been cut by said saw blade, the improvement comprising a timber guide positioned laterally adjacent said saw blade and operable independent of said infeed guide for fixing the position of said piece of timber in a direction substantially perpendicular to said cutting axis as said piece of timber is being cut in order to prevent said piece of timber from applying a lateral torque to said saw blade, said timber guide being laterally adjustable independent of said infeed guide, whereby said timber guide continues fixing the position of said piece of timber as it is being cut and as said infeed guide is being adjusted to accept another piece of timber to minimize the log gap between said pieces of timber.
A machine for cutting a succession of logs, said machine comprising:
- adjustable cutting means for cutting the oppositely disposed side portions of a log to produce an elongated block having substantially parallel, planar lateral surfaces, said cutting means being adjustable for cutting each successive log to a block having a preselected lateral separation between said lateral block surfaces;
- sawing means for longitudinally cutting at least one board from said block, said sawing means being spaced from said cutting means in the direction of feed of said block;
- infeed guide means positioned between said cutting means and said sawing means to engage said lateral block surfaces for fixing the lateral position of said block prior to said block reaching said sawing means, said infeed guide means being adjustable for engaging said lateral block surfaces of said block being cut by said cutting means;
- and
- guide means positioned laterally adjacent said sawing means and operable independent of said infeed guide means to engage said lateral block surfaces of said block being cut by said sawing means for fixing the lateral position of said block while being cut in order to prevent said block from applying a lateral torque to said sawing means, said guide means being adjustable for engaging said lateral block surfaces of said block being cut by said sawing means independent of the adjustment of said infeed guide means.
A guide mechanism for timber cutting machines having a pair of band saws, each having a continuous saw band entrained on pulleys which are interconnected by a rigid frame, said band saws being positioned opposite each other, with their respective cutting axis along which a piece of timber is fed substantially parallel to each other and their pulleys positioned laterally away from each other, a pair of opposing lateral infeed guides fixing the position therebetween of said piece of timber in a lateral direction substantially perpendicular to said cutting axes before said piece of timber reaches said band saws, a pair of opposing lateral outfeed guides fixing the position therebetween of said piece of timber in a direction substantially perpendicular to said cutting axes after said piece of timber has been cut by said band saws, and a pair of lateral timber guides positioned laterally adjacent said band saws and operable independent of said infeed guides for fixing the position of said piece of timber in a direction substantially perpendicular to said cutting axes as said piece of timber is being cut in order to prevent said piece of timber from applying a lateral torque to said band saws, each of said lateral guides being mounted on one of said frames of said band saws between respective pulleys, said lateral guides being laterally adjustable independent of said infeed guides, whereby said lateral guides continue fixing the position of said piece of timber as it is being cut and as said infeed guides are being adjusted to accept another piece of timber to minimize the log gap between said pieces of timber.
Dependencies are inferred from the claim text.