Lectra

Centre National De La Recherche Scientifique

Amvalor

Ecole Nationale Superieure D'arts Et Metiers (ensam)

Conservatoire National Des Arts Et Metiers

Didier Chabirand

Stéphane Bodivit

Régis Pierre André Lallement

Thierry Badie

Régis Lallement

Gilles Regnier

A method for determining a dimension between the back and the cutting edge of a vibrating blade mounted on a cutting head includes successively of acquiring a digital image of the blade mounted on the cutting tool so a line corresponding to a cutting edge of the blade and a line corresponding to a back of the blade are visible in the image, determining on the digital image along a straight line perpendicular to the line corresponding to the cutting edge of the blade the pixels comprised between the line corresponding to the cutting edge of the blade and the line corresponding to the back of the blade, and calculating a filtered dimension between the back and the cutting edge of the blade from the number of pixels comprised between the line corresponding to the cutting edge of the blade and the line corresponding to the back of the blade.

Method for determining a dimension between the back and the cutting edge of a vibrating blade mounted on a cutting tool

The invention provides a flattening method for flattening the edges of a swatch of flexible material from which pieces are to be cut out. The method comprises: establishing a digital representation of at least a portion of an outline (H) of the swatch of flexible material (H); establishing a specific flattening direction (D, D) and distance (V, V) for each of the points (P, P) of the scanned portion of the outline of the swatch; and for each selected point of the scanned portion of the outline of the swatch, using a presser foot of a cutter tool, to flatten the edges of the swatch along the specific flattening direction and distance established for said point, and along a flattening direction going from within the swatch towards its edges.

Method of flattening the edges of a swatch of flexible material to be cut

The invention relates to a machine for automatically cutting sheet material, the machine comprising a bench having a cutting zone, a cutter head mounted on means for moving it relative to the bundle, a cutter conveyor housed inside a box placed under the cutting zone, and means for establishing suction in the box, the box bulging outwards at least in its bottom portion that is remote from the cutting zone.

Machine for automatically cutting sheet materials provided with a bulged depression box

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Cestas, France

Didier Chabirand