A controller of a cutting apparatus includes: a storage section configured to preliminarily store as a threshold an arbitrary value based on a load current value of a motor detected when a cutting blade is rotated at a predetermined rotational speed while supplying a predetermined quantity of cutting water in a state in which a cutting water supply nozzle is positioned in an appropriate position; and a judgment section configured to judge normality or abnormality according to the result of comparison between a load current value detected when the cutting blade is rotated at the predetermined rotational speed while supplying the predetermined quantity of cutting water and the threshold stored in the storage section.

A guide for a blade of a bandsaw includes a head and two molded, replaceable shoes that constrain the blade. Each shoe is symmetrical, having four side faces as a thick diamond-shaped frictional border for blade contact. The back of the shoe is a replica of the front. Internal sides of each diamond profile have a resilient web having strips that reversibly lock with grooves against a parallelogram raised from the head surface to retain the shoe carry rubbing forces from the blade. The shoe may be removed, turned through 180 degrees, or flipped over.

A guide for a blade of a bandsaw includes a head and two molded, replaceable shoes that constrain the blade. Each shoe is symmetrical, having four side faces as a thick diamond-shaped frictional border for blade contact. The back of the shoe is a replica of the front. Internal sides of each diamond profile have a resilient web having strips that reversibly lock with grooves against a parallelogram raised from the head surface to retain the shoe carry rubbing forces from the blade. The shoe may be removed, turned through 180 degrees, or flipped over.

A cutting machine having a first wheel pair and an opposite second wheel pair, an first vertical wheel, an opposite second vertical wheel, a first drive wheel, a second opposite drive wheel, and a single cutting blade, the first vertical and the second vertical wheels being configured to travel simultaneously and in a same horizontal direction, the first and the second wheel pairs being configured to travel simultaneously and in a same vertical direction, the first wheel pair having a first slanted wheel and the second wheel pair having a second slanted wheel, the single cutting blade being routed over all wheels such that at any moment during a travel of the single cutting blade while driven by the first and second drive wheels, a vertical blade portion extends between and can travel horizontally with the first vertical wheel and the second vertical wheel during vertical cutting and a horizontal blade portion extends between and can travel vertically with the first and second wheel pairs during horizontal cutting, wherein the slant of the first slanted wheel and the slant of the second slanted wheel prevents intersection of the horizontal blade portion and the vertical blade portion.

A cutting machine having a first wheel pair and an opposite second wheel pair, an first vertical wheel, an opposite second vertical wheel, a first drive wheel, a second opposite drive wheel, and a single cutting blade, the first vertical and the second vertical wheels being configured to travel simultaneously and in a same horizontal direction, the first and the second wheel pairs being configured to travel simultaneously and in a same vertical direction, the first wheel pair having a first slanted wheel and the second wheel pair having a second slanted wheel, the single cutting blade being routed over all wheels such that at any moment during a travel of the single cutting blade while driven by the first and second drive wheels, a vertical blade portion extends between and can travel horizontally with the first vertical wheel and the second vertical wheel during vertical cutting and a horizontal blade portion extends between and can travel vertically with the first and second wheel pairs during horizontal cutting, wherein the slant of the first slanted wheel and the slant of the second slanted wheel prevents intersection of the horizontal blade portion and the vertical blade portion.

The present invention relates to a method for cutting rigid foams, especially slabstock P(M)I foams. A method is provided here, by means of which it is possible to cut these rigid foams even in relatively high layer thicknesses of, for example, more than 3 mm, without material loss, which is produced in relevant amounts, for example, in the course of sawing as a result of the sawdust formed.

The present invention relates to a method for cutting rigid foams, especially slabstock P(M)I foams. A method is provided here, by means of which it is possible to cut these rigid foams even in relatively high layer thicknesses of, for example, more than 3 mm, without material loss, which is produced in relevant amounts, for example, in the course of sawing as a result of the sawdust formed.

A controller of a cutting apparatus includes: a storage section configured to preliminarily store as a threshold an arbitrary value based on a load current value of a motor detected when a cutting blade is rotated at a predetermined rotational speed while supplying a predetermined quantity of cutting water in a state in which a cutting water supply nozzle is positioned in an appropriate position; and a judgment section configured to judge normality or abnormality according to the result of comparison between a load current value detected when the cutting blade is rotated at the predetermined rotational speed while supplying the predetermined quantity of cutting water and the threshold stored in the storage section.

A shoe for a band saw includes a block for coupling to the band saw, the block having an aperture, a locking ball disposed in the aperture, a body including a first surface for engaging a workpiece and an opposite surface having plurality of recesses, and a locking rod coupled to the block and movable between a first position and a second position. The locking ball is received in one of the plurality of recesses of the body when the locking rod is in the first position such that the body is fixed relative to the block, and the body is movable relative to the block when the locking rod is in the second position.

A shoe for a band saw includes a block for coupling to the band saw, the block having an aperture, a locking ball disposed in the aperture, a body including a first surface for engaging a workpiece and an opposite surface having plurality of recesses, and a locking rod coupled to the block and movable between a first position and a second position. The locking ball is received in one of the plurality of recesses of the body when the locking rod is in the first position such that the body is fixed relative to the block, and the body is movable relative to the block when the locking rod is in the second position.