Importance

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Abstract

An apparatus for planing opposite sides of a workpiece has a housing having a lower part and an upper part flanking a passage through which the workpiece to be planed is passed horizontally in a travel direction. Respective upper and lower planing drums rotatable on the respective housing parts above and below the passage about respective upper and lower axes extend transverse to the direction and define on rotation respective upper and lower cutting orbits centered on the respective axes. The lower drum is upstream of the upper drum relative to the workpiece travel direction. A stationary workpiece support table between the drums has an upper surface level and tangent with the lower orbit. Thus the underside of a workpiece passed in the direction over the lower drum is planed and slides downstream of the lower drum on the table surface. Respective upper and lower guide plates have vertically confronting faces upstream of the lower drum and are vertically displaceable on the respective housing parts between inner positions with the upper-plate face and lower plate-face level and tangent with the respective orbits and outer positions respectively vertically thereabove and therebelow. These upper and lower plates are interconnected and linked for substantially synchronous and opposite displacement so that the plates are always equispaced from a horizontal plane extending horizontally in the direction and vertically equispaced from the upper and lower orbits.

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First Claim