FR2665386A1 - GAS CUTTING TORCH. - Google Patents

Abstract

Gas cutting torch characterized in that the light waveguide (14) is made in the form of a multi-fiber light waveguide and that the different fibers or fiber bundles (15) are connected to one or more fibers. several operating units (21, 22) and at least one light source (16) and in that the light waveguide makes it possible to position the torch and to put marks or inscriptions on the surfaces of the parts.

Description

"Gas cutting torch".

  The invention relates to a gas cutting torch with a light wave guide.

  Oxycutting installations are equi-

  Pies, in accordance with customer requests, with gas cutting torches, aggregates of three torches capable of pivoting, igniters, marking tools or other These devices are, in the case automatically operating systems10 digitally controlled by a torch cutting machine control, for example a recorded program control. Document DE 38 03 444 Cl discloses a gas cutting torch in which, in the central cutting oxygen channel, is arranged above the nozzle, a light wave guide, by means of which

  the ignition of the heating flame is detected and the control signals can be produced as a function of this detection.20 Starting from this state of the art, the object of the invention is to reduce the number of devices

  additional sitives in cutting torch installations. This goal is achieved, in accordance with the invention.

  tion, in that the light waveguide is reali-

  is in the form of a light wave guide to more

  different fibers and that the different fibers or make

  fiber skins are connected to one or more uni-

  operating tees and at least one light source

  ge. Thanks to the above features,

  functions of the light waveguide associated with the cha-

  gas cutting light, are advantageously enlarged.

  Therefore, marking tools, as described in the OMNIMAT / SICOMAT brochure, MESSER GRIESHEIM, product number 0 810 178, pages 9 and 17,

can be deleted.

  Advantageously, for a low energy of the light rays introduced by the light source into the light wave guide, the positioning of the torch on the edges of the workpiece, can

  be simplified and / or automated, and for an introduction

  tion in higher energy, it may be possible to put on the pieces of work an inscription

and / or a marking.

  According to another characteristic of the

  vention, the light source is a laser or

a laser diode.

  According to another characteristic of the

  note, the light waveguide is placed above

  above the nozzle in the central oxygen supply

cutting gene.

  According to another characteristic of the

  vention, a light radiation is sent in a fiber or in a fiber bundle by the light source and is directed by the cutting nozzle on the

piece of work.

  According to another characteristic of the

  note, changes in the intensity of light radiation occurring at the edges of work pieces

  are detected by another fiber or by another

  be fiber bundle and these variations are evaluated in one of the operating units as a signal

  position for the gas cutting torch.

  According to another characteristic of the

  vention, energy from the light source -

  age and introduced into the workpiece through

  diary of the light wave guide causes along a predefined line, a modification capable of being detected optically on the surface of the workpiece. An exemplary embodiment of the invention is

  shown schematically in the attached drawing.

  The gas cutting torch designated by 10

  consists essentially of a body of chalu-

  meau 11 and through the cutting nozzle 12 The supply of

  cutting oxygen 13 is placed in the middle, inside

  laughing body of the torch 11 In this food

  cutting oxygen 13 is arranged an on-

  luminous 14 which is constituted by several

  bres The different fibers or the different bundles of fibers are designated by 15 If a

  modulated constant radiation arrives from the source of

  lighting 16 with low energy, via

  diary of the optical distributor for light waveguide

  neuses 17, or radiation distributor, in the light waveguides 14, this radiation exits in the middle of the cutting nozzle 12 from the channel 18

  cutting oxygen, connected to the oxy- 13 supply

  cutting gene, and it lights up the position of the torch

  during the attack from edge 19, during the sweep

  age of the rest of the sheet, during the next cut,

  after detachment from the cup or during a

  setting reference points The operator can position

  manually operate the gas cutting torch 10 in a simple manner based on the light point

edge incident 19.

  Automatic detection of the edge 19 can be obtained when, via a neighboring fiber or else a bundle of neighboring fibers 15, in the case of reflective surfaces 20 of the workpiece, the reduction of the intensity of the lighting is captured and brought to an operating unit 21 or 22. Advantageously the source of the lighting is a laser or else a laser diode with an emission of energy capable of being controlled If the laser energy is increased, so that the energy introduced into the workpiece 23 causes a modification 24, optically detectable, on the surface 20 of the workpiece, the light wave guide 14 can

  be used to put on the piece of work

scriptions or marks.

  Separate marking tools or

  registration can therefore be deleted

  més, thus the program and the costly separate drives for these tools The operating units 21, 22 and the light source 16 are connected to the control 24 of the oxygen cutting machine In this, the essential cutting data with a blowtorch,

  marking or registration, are deposited in a ban-

  that technological data By means of this data, the gas cutting torch is moved,

  according to the machining program.

Claims (6)

  1. Gas cutting torch with guide   light waves, characteristic gas cutting torch   in that the light wave guide (14) is   formed in the form of a light wave guide with several fibers and that the different fibers or   fiber bundles (15) are connected to one or more   several operating units (21, 22) and at least a light source (16).   2 Gas cutting torch according to the resale   indication 1, characterized in that the light source   ge (16) is a laser or a laser diode.   3. Gas cutting torch according to one   any of claims 1 or 2, characterized in   the light waveguide (14) is arranged above the nozzle (12) in the central supply (13) in cutting oxygen.   4. Method for positioning a torch   gas cutter according to any one of the claims   1 to 3, characterized in that light radiation   neux is sent in a fiber or in a beam   fiber bundle (15) by the light source and is   oriented by the cutting nozzle (12) on the work piece see (23).   5 Method according to claim 4, charac-   terized in that the changes in intensity of the light radiation occurring at the edges (19) of the   pieces of work (23) are detected by another fi   bre or by another bundle of fibers (15) and   these variations are evaluated in one of the units of ex-   operation (21, 22 and possibly others), as position signal for the cutting torch gas (10).   6. Method for putting marks or inscriptions on surfaces of work pieces with a gas cutting torch, according to any one of   Claims 1 to 3, characterized in that an energy   coming from the light source (16) and introduced into the workpiece (23) via the light wave guide (14) causes along a predefined line, a modification capable of being detected optically on the surface (20) of the workpiece.