Lectra Systemes S.a.

Lectra Systemes

Lectra Systems

Lectra Systems S.a.

Societe Lectra Systemes, S.a.

Societe Anonyme: Letra Systemes

Jean Etcheparre

Bernard Etcheparre

Bernard Etchparre

The device for sharpening a cutting blade presenting a sharp edge includes at least one grinding wheel provided at least on the surface with abrasive material. The grinding wheel has a cylindrical body presenting a V-sectioned peripheral groove, and is mounted to rotate freely about an axis contained in a plane generally parallel to the sharp edge of the blade and perpendicular to the median plane of the blade, with the axis being inclined by a predetermined angle with respect to the normal to the median plane of the blade. The sharpening device is further constructed to place the blade and the grinding wheel in contact and to provide for relative displacement of the blade and the grinding wheel in a direction parallel to the sharp edge of the blade.

Method and device for automatically sharpening cutting blades

A cutting and punching apparatus for sheet material, designed to be movably mounted on an automatic cutting machine, having a cutting tool and a punching tool, wherein said apparatus comprises means for vibrating said cutting tool, means for vertically displacing said cutting tool, means for rotating said cutting tool, means for sharpening said cutting tool, means for vertically displacing said punching tool, means for rotating said machine tool, and a supporting base on which are grouped in a compact manner all said means, which means being operable both simultaneously and independently of each other.

Cutting and punching apparatus for sheet material

The invention uses a carriage that is longitudinally displaceable with respect to a cutting table, and a light transporting band whose width is at least equal to that of the sheets. The carriage is comprised of two separable movable members, one of which is motorized and comprises an image device for recording an optimized disposition of pieces to be cut out, while the other is towed and comprises a transversal clamping device into which is engaged a free end of the sheet. The towed member is coupled at its rear portion to the light transporting band, the latter serving to support and protect the sheet of patterned material when it is being drawn out.

Method and apparatus for piling plural sheets of material having a

This invention relates to a laser cutting apparatus comprising a laser radiation emitter, a focussing lens fixed in an adjustable sliding sleeve, said sleeve being extended, towards the material to be cut, by a truncated nozzle of which the small end is in the immediate vicinity of said material to be cut, said apparatus comprising a gas-evacuation device constituted by a hood--called ejector--open towards the material to be cut and fixed on said sliding sleeve. According to the invention, said ejector comprises, on its periphery and on its open face lying opposite the material to be cut, openings allowing the injection of gas-air along convergent axes, and, in its upper part, a pipe for evacuating the gases. The invention is more particularly applicable to the cutting of materials in sheet form.

Laser cutting apparatus provided with a gas evacuation device

The invention related to a device for layer-stacking web-like materials, comprising a fixed table on which a carriage is mounted for sliding, said carriage supporting a roll of material mounted for free rotation on a support and being held by pressure against at least one endless driving elastic belt mounted on two rollers placed in parallel relationship inside a vertical plane, said rollers being driven in rotation by a position- and speed-controllable driving member, the material being unrolled and going down freely vertically in order to be laid on the laying table.

Device for layer-stacking web-like materials

An apparatus is provided for the interconnection of two mobile carriages which are connected by a rigid beam and guided along parallel guide rails. The apparatus permits the simultaneous and identical movement, with respect to both direction and distance, of the carriages along the respective guide rails. The apparatus comprises two generally symmetrically disposed cables, each of which is attached at one end to an end of one rail and at its other end to a diagonally opposed end of a parallel rail. Intermediate the attachment points, the cables connect the carriages by resting on and being supported by return pulleys which are integral with the carriages. Each cable thereby describes a generally Z-shaped configuration. The Z-shaped configurations are symmetrically disposed in order to cause, during the displacement of one carriage, the tensioning of one of the cables, and thereby cause the other carriage to be identically and simultaneously displaced.

Apparatus for the interconnection of two mobile carriers guided by

This invention relates to a device for driving and displacing a beam in a direction parallel to guide rails, and one or more carriages rigid with the beam in a direction transverse to the displacement of the beam. The device comprises two cables 7 and 8 stretched over pulleys 5 fixed at the ends of the guide rails 3 for the beam 4, and over pulleys 6 of the beam 4. The cables 7 and 8 are wound in reverse directions on the drums 9 of the motors M 1 and M 2 which are disposed symmetrically on one and the other side of the rails, such that when the motors are rotated, they cause the displacement of the beam, or of the carriage fixed on to one of the cables, or the simultaneous displacement of the beam and carriage.

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Bordeaux, France

Jean Etcheparre