DE19900910A1 - Arrangement for treating surfaces using laser radiation has deflection device with at least two deflection mirrors arranged at angle to each other; at least one mirror can be varied in angle - Google Patents

Arrangement for treating surfaces using laser radiation has deflection device with at least two deflection mirrors arranged at angle to each other; at least one mirror can be varied in angle

Info

Publication number
DE19900910A1
DE19900910A1 DE19900910A DE19900910A DE19900910A1 DE 19900910 A1 DE19900910 A1 DE 19900910A1 DE 19900910 A DE19900910 A DE 19900910A DE 19900910 A DE19900910 A DE 19900910A DE 19900910 A1 DE19900910 A1 DE 19900910A1
Authority
DE
Germany
Prior art keywords
beam
characterized
deflection
device
laser beam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19900910A
Other languages
German (de)
Inventor
Winfried Barkhausen
Werner Knoeppel
Edwin Buechter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clean Lasersysteme GmbH
Original Assignee
Clean Lasersysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clean Lasersysteme GmbH filed Critical Clean Lasersysteme GmbH
Priority to DE19900910A priority Critical patent/DE19900910A1/en
Publication of DE19900910A1 publication Critical patent/DE19900910A1/en
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0035Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
    • B08B7/0042Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
    • B23K26/082Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head

Abstract

A device and a method for treating surfaces by means of laser radiation are described. The device has a laser beam source and a processing head (10) connected to it via an optical fiber (14). The processing head (10) has a device for beam shaping, in which a parallel beam is generated, a device for beam deflection and a beam exit opening (19), in which a decoupling lens (30) is arranged. In order to generate a deflection path of the laser beam on the surface to be treated that is adapted to the application processes, two deflection mirrors, each of which can be varied by means of a control device, are advantageously provided in the device for beam deflection, which are advantageously arranged orthogonally to one another. In order to be able to use the processing head (10) even in areas with only a limited amount of space, the light guide (14) is arranged on the processing head (10) at an angle of 90 degrees to the beam outlet opening (19). Furthermore, the beam outlet opening (19) and thus the decoupling optics (30) can be designed asymmetrically in the end face (22) of the processing head (10).

Description

The present invention relates to a device for Treating surfaces using laser radiation with a Laser beam source and one with an optical fiber connected processing head, the processing head a Device for beam shaping, a device for Beam deflection and a beam outlet opening. The invention further relates to a method for treatment of surfaces using laser radiation.

Surface treatment, such as surface cleaning, through laser radiation now represents an economical Alternative to conventional cleaning methods, such as for example, pickling, sandblasting or the like. Compared to these ecologically questionable processes laser beam cleaning technology exhibits a number of Advantages. It is neither on blasting media, nor on Chemicals and thus enables a special gentle and almost residue-free cleaning of components of all kinds. Through a targeted choice of Laser parameters can be a precise removal of dirt and Cover layers are effected without the base material is damaged.

This removal is triggered by a thermal effect. A highly focused laser beam evaporates the one to be removed  Top layer without damaging the base material. Through the Setting suitable parameters will be highly flexible when processing different surface layers / Material combinations achieved.

From WO 96/38 257 there is already a laser beam device and -method known for machining workpieces. Here comes a fiber-coupled, line-shaped deflecting Laser beam deflection system for hand-held machining on Commitment. With this device, which the characteristics of Has preamble of claim 1, it is possible to create a line for removing a top layer in the hand-held operation over a surface to be processed to be led. Superimposing the two relative movements, namely the deflected laser beam and the feed direction of the processing head, there is a streak with a typical width of a few centimeters. The well-known However, the device has a number of practical uses Disadvantages. By overlaying the two Relative movements lead to beat effects superimposed laser pulses. These effects are so in practice serious that in most cases a homogeneous Removal result is not possible.

Another disadvantage of the known device as well other solutions for removing surface layers by means of Laser radiation often exists with regard to restricted access to the surface to be treated due to the quite large and expansive dimensions Machining heads. This makes the use of the advantageous Laser beam process impossible for such applications  which the space conditions above the to be treated Area are restricted. This applies, for example, to the Area of the vulcanizing industry too where for cleaning Vulcanizing molds even when open Vulcanizing press often only a free space of 200 to 300 mm is available.

Based on the state of the art, the present invention the object of a device of the type mentioned in such a way that the to Disadvantages described in the prior art can be avoided. In particular, a device for treating Surfaces are provided by means of laser radiation which the deflection path of the laser beam to the requirements of the respective removal process can be optimally adapted. In particular, the device should also be used in areas with a small space can be used. In addition, a accordingly improved method are provided.

The object is achieved according to the first aspect of the invention a development of the device described above solved, which is characterized in that to generate a geometrically guided deflection path of the Laser beam on the surface to be treated in the Device for beam deflection at least two deflecting mirrors are provided that the two deflecting mirrors at an angle are arranged to each other and that at least one of the Deflecting mirror is arranged variable in angle.

The deflection path can be achieved by the device according to the invention of the laser beam to the specific requirements of the  respective processing process, for example one Removal process. The invention lies there based on the knowledge that, for example, to achieve of a very uniform homogeneous removal in terms of area The local distribution of the top layer by means of laser radiation impinging laser pulses must be controlled very precisely. This can be done through the corresponding position of the Realize deflecting mirror to each other. It is necessary that to generate a process-adapted movement path on the Surface two deflecting mirrors are present.

In the device for beam shaping, the Light guides diverging into the machining head Laser beam transferred into a parallel beam. The parallel beam will be over at least one Deflection element, for example a deflection mirror, deflection prism or the like, in the device for beam deflection initiated and there by a corresponding position of Deflecting mirror to each other according to the requirements of the distracted from the respective process. Then the Laser beam through the beam exit opening from the Machining head uncoupled and onto the one to be treated Surface directed. It is advantageous on the deflection element a photoelectric sensor attached, the am Processing head arriving laser beam power measures.

The device according to the invention is particularly advantageous also designed for flexible, mobile use. The Laser radiation can be in a compact, from the machining head independent base unit and generated almost lossless light guide, which according to need and  Use case can have a length of up to 100 m for manually or automatically guided processing head be transported. The basic device usually has a suitable cooling device for the laser.

Advantageous embodiments of the invention Device result from the back-related Subclaims.

Two angle-adjustable deflecting mirrors can be advantageous be provided. This allows the trajectory of the Laser beam on the surface to be treated even better can be set.

Alternatively, the second can be changed in angle Deflecting mirror can also be designed as a deflecting mirror. In this case there is a horizontally deflected, linear laser beam, which is particularly ergonomic allows inexpensive processing of filigree structures. In a further embodiment, the deflection mirrors are orthogonal arranged to each other. By arranging the two Deflecting mirror at an angle of 90 degrees relative to each other is a deflection of the laser beam in two from each other independent spatial directions possible.

At least one control device for controlling is advantageous of the or the angle-variable deflection mirror is provided. The deflecting mirror or mirrors is controlled via the control device electronically controlled, and in his or her orientation changed, whereby a process-adapted distraction of  Laser beam is generated on the surface. Preferably can control the variable angle Deflecting mirror with an electronic circuit or via a microprocessor, which is advantageously programmable, respectively. One advantage of the microprocessor is, among other things in the possibility of correcting inaccuracies Mirror movement due to its dynamic Vibration behavior, or in a targeted local Control the speed and direction of movement of the deflected laser beam.

The two deflecting mirrors can advantageously be mutually such can be arranged or be and controlled so that the Deflection path of the laser beam on the one to be treated Circular, elliptical, spiral or shaped surface an elongated "eight", each with a fixed, variable or oscillating amplitude. The deflection path can also be modulated as a line Laser power can be formed. For example conceivable to interrupt the line at certain points or the laser power at reversal points of the deflection path to feel. This has been done in a number of applications Advantages, some of which are within the scope of the figure description are mentioned as examples.

In a further embodiment, the light guide is at an angle greater than 45 degrees, preferably at an angle of 90 degrees Beam outlet opening arranged on the processing head.

This makes the extremely compact design of the Machining head possible, even in confined spaces  Space conditions a comfortable use of the device makes possible.

The jet outlet opening is advantageous in one end face of the machining head. Preferably, the Beam outlet opening asymmetrical in the front educated. For example, the beam outlet opening in the Area from one or two edges of the front of the Machining head be designed so that a good Accessibility especially when editing, such as the Cleaning of edges or corners is possible.

In a further embodiment is in the beam outlet opening decoupling optics for decoupling the laser beam from the Machining head provided. The decoupling optics can be used as Be designed focusing optics and is advantageous in close proximity to the second deflecting mirror, the can be arranged variable in angle or fixed deflection. The decoupling optics can be used as a variable lens Focal length. This allows you to easily adapted to the respective application generate the optimum beam diameter for the laser beam. In other design can also for the decoupling optics Interchangeable lenses with different (graduated) Focal lengths are used.

Furthermore, an additional Suction device may be provided. That is advantageous Suction device in the area of the jet outlet opening arranged. With the suction device, which advantageously is designed as a high vacuum suction device is a local  Extraction of the removed gases, vapors and particles directly on the Place of origin possible, where their concentration is greatest. In a preferred embodiment, the suction device as one around the beam outlet opening and thus for example also concentrically shaped around the decoupling optics Suction nozzle to be formed.

The processing head can advantageously be used for manual Have hand grip a grip element.

A bracket element can advantageously be provided in the area of the handle element be provided. This bracket element protects the hand and an operator's finger using the Machining head in hand-held operation. In particular is this is hotter when processing for work safety reasons Workpiece surfaces required.

It is advantageous to have at least one, preferably two switch elements are provided. This is about it is in particular a trigger for the laser beam and possibly an additional safety trigger. This Security trigger has the function of an unintended To prevent triggering of the laser beam in manual mode, and is advantageous as a button with self-holding function designed.

If the processing head is used in manual mode the light guide preferably with the handle element connected that the light guide at an angle of greater 45 degrees, preferably at an angle of 90 degrees Beam outlet opening is aligned. This will make one  Application of the processing head also in areas with a limited space, for example in open Vulcanizing forms, possible. Depending on the design of the Processing head can be the light guide on the handle be coupled or passed through this. In addition, a diode laser can be provided, via which in the beam path of the processing laser is a diode laser beam is coupled or can be coupled. The diode laser beam does the actual one when switched off Machining laser as a visible light spot the selected Laser deflection path visible. The display of the Diode laser beam is preferably on the first (Fixed) deflecting element of the device for Beam shaping at an angle of 90 degrees to the incoming Machining laser beam.

In a further embodiment, a photoelectric sensor be provided for measuring the laser beam power. This Sensor is also advantageous in the area of the first (Fixed) deflection elements arranged.

The device according to the invention both Beam guidance, beam deflection and beam shaping optimized for process control, so that the state of the Disadvantages described technology can be avoided. So is by the device according to the invention both in hand-held, as well as in automated operation qualitatively and economically advantageous use of the Laser beam technology for the treatment of surfaces for industrial applications possible.  

According to the second aspect of the present invention, a method for treating surfaces by means of laser radiation using an inventive device as described above is provided, which is characterized according to the invention by the following steps:

  • a) coupling the laser beam via the light guide into the Machining head;
  • b) transferring the laser beam in the device for Beam formation in a parallel beam;
  • c) deflecting the laser beam over the at least two in one Deflecting mirror arranged at an angle to each other Device for beam deflection such that the from the Beam exit opening coupled out laser beam in one geometrically guided deflection path on the treating surface is performed.

The deflection path can be achieved by the method according to the invention of the laser beam on the prevailing processes and Conditions can be set. Furthermore, such Surfaces are treated that are narrow and difficult accessible spaces, such as in vulcanizing molds or the like. The advantages, effects Effects and the functioning of the invention The procedure is based on the above Full reference device according to the invention and hereby referred.

Preferred embodiments of the method according to the invention result from the subclaims.  

At least one of the deflecting mirrors is advantageous, preferably two deflecting mirrors, via a control device, especially a microprocessor control, variable in angle controlled, the geometry of the deflection path of the Laser beam on the actuation of the control device and the associated change in angle of the deflecting mirror or mirrors is set.

In an advantageous embodiment, the deflection path of the laser beam in the form of an elongated "eight" can be set. This results in a constant Feed of the processing optics exactly aligned to each other parallel processing lines on the surface.

In a further embodiment, the deflection path of the Laser beam in the form of a circle, an ellipse or one Spiral, each with fixed, variable or oscillating amplitude.

The method also makes it possible to control the radiation of the laser beam onto the surface to be treated To reduce or decrease reversal points of the deflection movement interrupt. This is detailed in some below described use cases an advantage.

The device according to the invention and / or the inventive method for hand-held or automated or robotic editing of Surfaces, especially for the removal of Surface layers or for cleaning technical Surfaces. For example, the  Device and / or the method for cleaning / removal, Rust removal / descaling, degreasing / oil removal or Stripping / stripping of component surfaces used become. Of course, other areas of application and -types conceivable, so that the invention is not limited to described examples is limited.

The invention will now be described in an exemplary manner with reference to Embodiments with reference to the accompanying Drawing explained in more detail. Show it:

Figure 1a is a schematic view of the optical path of the laser beam inside the processing head with two angle-variant deflecting mirrors.

Figure 1b is a schematic view of the optical path of the laser beam inside the processing head with an angle-variant and a festumlenkenden deflecting mirror.

FIG. 2a is a side view of the machining head;

FIG. 2b shows a front view of the machining head according to FIG. 2a;

FIG. 3a shows a side view of another embodiment of the machining head;

FIG. 3b is a front view of the machining head according to Fig. 3a;

FIGS. 4 to 9 different deflection paths for the laser beam;

FIG. 10a, 10b, 10c a processed with a specific deflection path of the laser beam workpiece;

Fig. 11a, 11b, 11c a processed with a different path of the laser beam deflection workpiece and

Fig. 12a, 12b, 12c with an edited still a deflection path of the laser beam workpiece.

In Figs. 1 to 3b shows a device for treating surfaces by means of laser radiation, which is used in particular for the removal of surface coating layers or for the purification of technical surfaces. The device has a suitable laser beam source, not shown, which is connected to a processing head 10 via an optical fiber 14 , which in the present exemplary embodiment is designed as a flexible optical fiber. The processing head 10 is designed for manual processing, but it can just as well be automated or operated with robots.

The laser radiation first arrives via the light guide 14 into a device for beam shaping 40 located in the processing head 10 , as shown in FIGS. 1a and 1b. With a collimator optics that can be designed with a variable focal length and has a collimator lens 41 , the diverging laser beam emerging from the light guide 14 is converted into a parallel beam. The laser beam is directed into a device for beam deflection 50 with one or more fixed deflection elements 42 . The device for beam deflection 50 has two deflecting mirrors 51 , 52 , which are advantageously arranged at an angle of 90 degrees relative to one another. This enables the laser beam to be deflected in two mutually independent spatial directions. In the immediate vicinity of the second deflecting mirror 52 there is a coupling optic 30 which is specially optimized for the imaging of deflected laser radiation and which can be designed, for example, as a focusing optic. This is advantageously designed as a lens with a variable focal length, but can also have a number of interchangeable lenses with different focal lengths. This arrangement of the optics and mirrors enables an extremely compact construction of all beam-guiding and beam-shaping optical elements, which makes the geometrical dimensions of the device very compact.

In the beam path shown in FIG. 1a, both deflection mirrors 51 , 52 are designed as angle-deflecting deflection mirrors. The deflecting mirrors 51 , 52 can each be pivoted about an axis of rotation 53 . The control and thus the change in angle of the deflecting mirrors 51 , 52 takes place via a control device, not shown, which can have, for example, a programmable microprocessor.

The arrangement of a fixedly mounted deflecting element 42 , for example a deflecting mirror or deflecting prism, and the two angle-deflecting deflecting mirrors 51 , 52 shown in FIG Laser beam for processing, such as cleaning, difficult accessible components. The deflection element is designed such that a photoelectric sensor for measuring the laser beam power can additionally be attached and / or a diode laser beam can be superimposed on the processing laser beam.

The described arrangement of the beam path generates geometric deflection paths 60 of the laser beam on the surfaces to be treated, which are shown, for example, in FIGS. 4 to 10.

Depending on the need and application, either the first or the second deflecting mirror can be designed and arranged not as a variable-angle mirror but as a fixed-deflecting mirror. This results in either a vertically or horizontally deflected, linear laser beam, which enables ergonomically favorable processing of filigree structures. In Fig. 1b, the first deflecting mirror 51 is variable in angle and the second deflecting mirror 52 is arranged to deflect in a fixed manner. Examples of deflection paths 60 of the laser beam that can be generated with such an arrangement are shown in FIGS. 11 and 12.

A processing head 10 is shown schematically in FIGS. 2a and 2b. The processing head 10 is designed for manual operation and therefore has a grip element 11 . Furthermore, a switch element 12 and a switch element 13 functioning as a safety switch are provided for triggering the laser beam. The processing head 10 also has a housing region 17 connected to the grip element 11 , in which at least the device for beam deflection 50 and the coupling optics 30 are arranged. The decoupling optics 30 are guided through a beam outlet opening 19 provided in an end face 22 of the machining head 10 . The beam outlet opening 19 and thus also the coupling optics 30 are provided or arranged asymmetrically, in the present case in the region of the edges 23 , 24 , in the end face 22 . As a result, edges and corners of components can be conveniently treated with the processing head 10 .

The light guide 14 is advantageously mounted at the lower end of the handle element 11 . Depending on requirements, the light guide 14 can also be passed through the handle element. In order to be able to use the machining head 10 even in areas with only a limited amount of space, the light guide 14 is arranged on the fastening head 10 at an angle of 90 degrees to the beam outlet opening 19 .

The laser parameters and other parameters are set via setting elements 18 .

The light guide 14 and other electronic connection conductors 15 are protected by a flexible, mechanically and dust-protecting outer tube 16 , which is attached to the lower end of the handle element 11 . This arrangement of the elements 14 , 15 and 16 achieves the best possible accessibility, for example for cleaning parts that are difficult to access, such as vulcanizing molds or the like in the installed state. The machining head 10 is advantageously made of light metal, so that the highest possible strength is achieved with the lowest possible weight.

As shown in FIGS . 3a and 3b, an upstream bracket element 20 can be provided for occupational safety reasons, which, especially when cleaning very hot vulcanizing molds (typical temperature about 180 ° C.), causes accidental contact and thereby burns the fingers on the hot mold prevented. To rest the hand, a hand rest 25 is also provided, which at the same time represents mechanical protection of the machining head 10 in the event of impacts.

In addition, the treatment head has a concentrically designed suction device 21 which is arranged around the decoupling optics 30 .

FIGS. 4 to 12 show different deflection paths 60 of the laser beam. FIG. 4 shows a circular deflection geometry, as is advantageous, for example, for the removal of sealing residues on sealing surfaces. In this application, the impurities are distributed unevenly on the sealing surface to be cleaned: thin layer in the middle and bulge-like thick layer on the edges. In order to completely remove these layers, the laser radiation in the edge areas has to act comparatively longer. By deflecting the laser radiation in the form shown in FIG. 4, the laser radiation has a longer residence time in the edge region of the thicker residues, as a result of which the removal in these regions takes place more efficiently. As a result, higher feed speeds can be achieved for this application, particularly in automated operation.

By using a deflection path 60 according to FIG. 5, the width of the removal track can be easily adapted to different component geometries.

FIGS. 6 and 7 show an elliptically shaped beam deflection with and without varying amplitude.

In the case of the spiral deflection shown in FIG. 8, by adapting the track spacing of two adjacent tracks, an area-wide arrangement of the laser beam tracks and thus a uniform area removal can be achieved in a simple manner.

In FIGS. 5 and 7 the variation of the amplitude can be modulated cyclically, so that here too an optimal area distribution is achieved on the surface to be treated.

In Fig. 9, a further advantageous deflection path 60 is shown. The laser radiation is deflected in the form of a lying "figure eight" so that at the end of a horizontal path there is a rapid jump in the laser radiation. Due to the beam deflection in the form of a lying "figure eight", an exactly parallel, meandering arrangement of the individual removal lines is achieved while the processing head 10 is being advanced at the same time. This is shown in Fig. 10c. As a result, extremely homogeneous removal can be achieved in both manual and automated operation. Such a homogeneous removal is shown on a workpiece 70 in FIGS. 10a and 10b. The workpiece 70 consists of a base material 71 and a cover layer 72 . Laser machining results in a homogeneous removal pattern 73 . Due to the achievable higher feed rate, increased efficiency in laser processing is achieved.

If, as was shown in FIG. 1b, the second deflecting mirror is designed and arranged as a fixed deflecting mirror, a horizontal line is generated with the device for beam deflection 50 , as is shown in FIGS . 11c and 12c. According to Fig. 11c, a triangular deflection web results at constant feed of the processing optics 60 of the laser beam on the surface.

This results, as shown in FIGS. 11a and 11b, in an uneven removal pattern with recessed edges 74 in the edge area. In the reversal points of the deflecting mirror 51 , which is variable in angle, the relative speed of the laser beam to the surface is zero for a small moment. This leads to an undesirable influence on the workpiece, particularly in the case of temperature-sensitive surfaces, such as vulcanizing molds, which can form oxide layers if the laser radiation remains too long, which in the worst case leads to workpiece destruction. It is therefore proposed to switch off the laser radiation in the reversal points of the angle-variable mirror, so that influencing of the material can be reliably ruled out. Such a deflection path 60 is shown in Fig. 12c. By switching off the laser radiation in the reversal points 75 , an extremely homogeneous removal pattern 73 can in turn be achieved.

Reference list

10th

Machining head

11

Grip element

12th

Switch element

13

Switch element

14

Light guide

15

electrical connection line

16

Outer hose

17th

Housing area

18th

Adjustment element

19th

Beam outlet opening

20th

Bracket element

21

Face

23

Edge

23

Edge

25th

Palm rest

30th

Decoupling optics

40

Beam shaping device

41

Collimator lens

42

fixed deflection element

50

Device for beam deflection

51

Deflecting mirror with variable angles

52

Deflecting mirror with variable angles

53

Axis of rotation

60

Diversion path

70

workpiece

71

Basic material

72

Top layer

73

Removal pattern

74

Edge

75

Turning point

Claims (22)

1. Device for treating surfaces by means of laser radiation, with a laser beam source and a processing head ( 10 ) connected to the latter via an optical fiber ( 14 ), the processing head ( 10 ) being a device for beam shaping ( 40 ), a device for beam deflection ( 50 ) and has a beam exit opening ( 19 ), characterized in that for generating a geometrically guided deflection path ( 60 ) of the laser beam on the surface to be treated in the device for beam deflection ( 50 ) at least two deflection mirrors ( 51 , 52 ) are provided, that the two Deflecting mirrors ( 51 , 52 ) are arranged at an angle to one another and that at least one of the deflecting mirrors ( 51 ; 52 ) is arranged so as to be variable in angle.
2. Device according to claim 1, characterized in that two angle-variable deflection mirrors ( 51 , 52 ) are provided.
3. Apparatus according to claim 1 or 2, characterized in that the deflecting mirrors ( 51 , 52 ) are arranged orthogonally to one another.
6. Device according to one of claims 1 to 3, characterized in that at least one control device for controlling the or the angle-variable deflection mirror ( 51 , 52 ) is provided.
5. The device according to claim 4, characterized in that the control device as a microprocessor control is trained.
6. Device according to one of claims 1 to 5, characterized in that the two deflecting mirrors ( 51 , 52 ) are arranged such that the deflection path ( 60 ) of the laser beam on the surface to be treated is circular, elliptical, spiral or in the form of a elongated "eight", each with a fixed, variable or oscillating amplitude.
7. Device according to one of claims 1 to 6, characterized in that the light guide ( 14 ) is arranged at an angle greater than 45 degrees, preferably at an angle of 90 degrees, to the beam outlet opening ( 19 ) on the processing head ( 10 ).
6. Device according to one of claims 1 to 7, characterized in that the beam outlet opening ( 19 ) in an end face ( 22 ) of the processing head ( 10 ) is formed and that the beam outlet opening ( 19 ) is preferably asymmetrical in the end face ( 22 ) .
9. Device according to one of claims 1 to 8, characterized in that in the beam outlet opening ( 19 ) a coupling optics ( 30 ) is provided for coupling out the laser beam.
10. Device according to one of claims 1 to 9, characterized in that a suction device ( 21 ) is provided on the processing head ( 10 ) and that the suction device ( 21 ) is preferably arranged in the region of the jet outlet opening ( 19 ).
11. Device according to one of claims 1 to 10, characterized in that the processing head ( 10 ) for manual manual guidance has a handle element ( 11 ).
12. The apparatus according to claim 11, characterized in that a bracket element ( 20 ) is provided in the region of the handle element ( 11 ).
13. The device according to one of claims 1 to 12, characterized in that on the processing head ( 10 ) at least one, preferably two switch elements ( 12 , 13 ) is / are provided, the second switch element in particular as a safety switch, preferably as a button with self-holding function, is designed.
14. Device according to one of claims 11 to 13, characterized in that the light guide ( 14 ) is connected to the handle element ( 11 ) such that the light guide ( 14 ) at an angle greater than 45 degrees, preferably at an angle of 90 degrees is aligned with the beam outlet opening ( 19 ).
15. The device according to one of claims 1 to 14, characterized characterized in that a diode laser is provided, the  Beam in the beam path of the processing laser is coupled or can be coupled.
16. The device according to one of claims 1 to 15, characterized characterized in that a photoelectric sensor for Measurement of the laser beam power is provided.
17. Process for treating surfaces by means of Laser radiation using a device after one of claims 1 to 16, characterized by the following Steps: a) Coupling the laser beam over the Light guide in the machining head; b) transfer of the Laser beam in the device for beam shaping in one parallel beam; c) deflecting the laser beam over the at least two at an angle to each other arranged deflecting mirror in the device for Beam deflection such that the from Beam exit opening coupled out laser beam in one geometrically guided deflection path on the treating surface is performed.
18. The method according to claim 17, characterized in that at least one of the deflecting mirrors, preferably two Deflecting mirror, via a control device, in particular a microprocessor control, variable in angle are controlled and that the geometry of the deflection path the laser beam via the actuation of the control device and the associated change in angle of the Deflecting mirror is set.  
19. The method according to claim 17 or 18, characterized in that the deflection path of the laser beam in the form of a elongated "eight" is set.
20. The method according to claim 17 or 18, characterized in that that the deflection path of the laser beam in the form of a Circle, an ellipse or a spiral, each with fixed, variable or oscillating amplitude, is set.
21. The method according to any one of claims 17 to 20, characterized characterized in that the beam action of the laser beam on the surface to be treated at the reversal points of the Deflection movement is reduced or interrupted.
22. Use of a device according to one of claims 1 to 16 and / or a method according to one of claims 17 to 21 for handheld or automated or robot-assisted processing of surfaces, in particular for removing surface layers or for cleaning technical surfaces.
DE19900910A 1999-01-13 1999-01-13 Arrangement for treating surfaces using laser radiation has deflection device with at least two deflection mirrors arranged at angle to each other; at least one mirror can be varied in angle Ceased DE19900910A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19900910A DE19900910A1 (en) 1999-01-13 1999-01-13 Arrangement for treating surfaces using laser radiation has deflection device with at least two deflection mirrors arranged at angle to each other; at least one mirror can be varied in angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19900910A DE19900910A1 (en) 1999-01-13 1999-01-13 Arrangement for treating surfaces using laser radiation has deflection device with at least two deflection mirrors arranged at angle to each other; at least one mirror can be varied in angle

Publications (1)

Publication Number Publication Date
DE19900910A1 true DE19900910A1 (en) 2000-07-27

Family

ID=7894062

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19900910A Ceased DE19900910A1 (en) 1999-01-13 1999-01-13 Arrangement for treating surfaces using laser radiation has deflection device with at least two deflection mirrors arranged at angle to each other; at least one mirror can be varied in angle

Country Status (1)

Country Link
DE (1) DE19900910A1 (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014900A1 (en) * 2000-03-24 2001-09-27 Mahle Gmbh Piston for internal combustion engine has annular groove(s) in which at least lower edge is profiled; profiling is produced by use of laser beams and can consist of concentric grooves
DE10217200A1 (en) * 2002-04-18 2003-10-30 Winter Pipeline Gmbh Improving the quality of welding, coating and hardening and quenching of metal workpieces comprises using a laser arrangement of high power and liquid-cooled mirrors
DE10318681A1 (en) * 2003-04-24 2004-11-25 Schott Glas System removing rim of substrate layer and for substrate coating, mainly with photolacquer film, for use in photolithographic process
WO2006008071A1 (en) 2004-07-19 2006-01-26 Reinz-Dichtungs-Gmbh Metallic flat gasket
DE102005024812A1 (en) * 2005-05-27 2006-11-30 Emag Laser Tec Gmbh Method and device for the treatment of workpiece surfaces by means of laser radiation
DE102006005127A1 (en) * 2006-02-04 2007-08-09 Mühlbauer Ag Cleaning dies for use in the application of perforations to documents, comprises using a laser to remove impurities
CN100455397C (en) * 2004-01-14 2009-01-28 臼井国际产业株式会社 Method for removing resin layer from resin-coated metal tube
US7517617B2 (en) 2003-04-16 2009-04-14 Schott Ag Mask blank for use in EUV lithography and method for its production
DE102008009704A1 (en) * 2008-02-18 2009-08-20 Eisenmann Anlagenbau Gmbh & Co. Kg Method and device for at least partial removal of a coating and surface treatment plant
WO2011000814A2 (en) 2009-06-29 2011-01-06 Reis Gmbh & Co. Kg Maschinenfabrik Method for exposing an electrical contact
DE102009044022A1 (en) * 2009-09-16 2011-03-24 Reis Gmbh & Co. Kg Maschinenfabrik Method for exposing electrical contact, involves determining location of electrical contact by sensor, where layer made of plastic is removed in flat area
DE102010011508A1 (en) * 2010-03-15 2011-09-15 Ewag Ag Laser processing apparatus and method for producing a rotationally symmetrical tool
US8257637B2 (en) 2004-01-14 2012-09-04 Usui Kakusai Sangyo Kaisha Limited Method for removing resin layer from resin-coated metal tube
DE102013105878A1 (en) * 2013-06-06 2014-12-11 Accuride International Gmbh Surface-coated telescopic rail
DE102013114706A1 (en) * 2013-12-20 2015-06-25 Sandvik Surface Solutions Division Of Sandvik Materials Technology Deutschland Gmbh Cleaning of press plates or rotating press belts
EP2823929A4 (en) * 2012-03-09 2015-12-02 Toyokoh Co Ltd Laser irradiation device, laser irradiation system, and method for removing coating or adhering matter
EP2928635B1 (en) 2012-12-04 2017-02-22 Ewag AG Laser machining device and method for machining a workpiece by using a laser machining device
DE102016102771A1 (en) * 2016-02-17 2017-08-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for joining metallic workpieces and apparatus for joining
RU2682423C1 (en) * 2018-05-21 2019-03-19 Федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В.И. Ульянова (Ленина) Laser cleaning of paper based documents
US10280558B2 (en) 2012-07-10 2019-05-07 Woodrow Scientific Limited Methods and apparatus for laser cleaning of fabric materials
US10407821B2 (en) 2012-07-10 2019-09-10 Woodrow Scientific Ltd. Methods and apparatus for laser cleaning

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19706038A1 (en) * 1997-02-06 1998-08-20 Chromatron Laser Sys Gmbh Device for marking materials with a laser
DE19821211A1 (en) * 1997-05-12 1998-11-19 Sumitomo Heavy Industries Removing coating from object

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19706038A1 (en) * 1997-02-06 1998-08-20 Chromatron Laser Sys Gmbh Device for marking materials with a laser
DE19821211A1 (en) * 1997-05-12 1998-11-19 Sumitomo Heavy Industries Removing coating from object

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014900A1 (en) * 2000-03-24 2001-09-27 Mahle Gmbh Piston for internal combustion engine has annular groove(s) in which at least lower edge is profiled; profiling is produced by use of laser beams and can consist of concentric grooves
US6837146B2 (en) 2000-03-24 2005-01-04 Mahle Gmbh Piston for internal combustion engines
DE10217200A1 (en) * 2002-04-18 2003-10-30 Winter Pipeline Gmbh Improving the quality of welding, coating and hardening and quenching of metal workpieces comprises using a laser arrangement of high power and liquid-cooled mirrors
US7517617B2 (en) 2003-04-16 2009-04-14 Schott Ag Mask blank for use in EUV lithography and method for its production
DE10318681A1 (en) * 2003-04-24 2004-11-25 Schott Glas System removing rim of substrate layer and for substrate coating, mainly with photolacquer film, for use in photolithographic process
DE10318681B4 (en) * 2003-04-24 2006-07-06 Schott Ag Method and device for removing an edge region of a substrate layer and for substrate coating and substrate
CN100455397C (en) * 2004-01-14 2009-01-28 臼井国际产业株式会社 Method for removing resin layer from resin-coated metal tube
US8257637B2 (en) 2004-01-14 2012-09-04 Usui Kakusai Sangyo Kaisha Limited Method for removing resin layer from resin-coated metal tube
DE102004034824B4 (en) * 2004-07-19 2006-10-05 Reinz-Dichtungs-Gmbh Metallic flat gasket
WO2006008071A1 (en) 2004-07-19 2006-01-26 Reinz-Dichtungs-Gmbh Metallic flat gasket
DE102005024812A1 (en) * 2005-05-27 2006-11-30 Emag Laser Tec Gmbh Method and device for the treatment of workpiece surfaces by means of laser radiation
DE102006005127B4 (en) * 2006-02-04 2008-06-19 Mühlbauer Ag Method and device for cleaning die elements for perforation processing operations on documents
DE102006005127A1 (en) * 2006-02-04 2007-08-09 Mühlbauer Ag Cleaning dies for use in the application of perforations to documents, comprises using a laser to remove impurities
DE102008009704A1 (en) * 2008-02-18 2009-08-20 Eisenmann Anlagenbau Gmbh & Co. Kg Method and device for at least partial removal of a coating and surface treatment plant
WO2011000814A2 (en) 2009-06-29 2011-01-06 Reis Gmbh & Co. Kg Maschinenfabrik Method for exposing an electrical contact
DE102009044022A1 (en) * 2009-09-16 2011-03-24 Reis Gmbh & Co. Kg Maschinenfabrik Method for exposing electrical contact, involves determining location of electrical contact by sensor, where layer made of plastic is removed in flat area
DE102010011508B4 (en) * 2010-03-15 2015-12-10 Ewag Ag Method for producing at least one flute and at least one cutting edge and laser processing device
US8872065B2 (en) 2010-03-15 2014-10-28 Ewag Ag Laser machining apparatus and method for the manufacture of a rotationally symmetrical tool
DE102010011508A1 (en) * 2010-03-15 2011-09-15 Ewag Ag Laser processing apparatus and method for producing a rotationally symmetrical tool
EP2823929A4 (en) * 2012-03-09 2015-12-02 Toyokoh Co Ltd Laser irradiation device, laser irradiation system, and method for removing coating or adhering matter
US9868179B2 (en) 2012-03-09 2018-01-16 TOYOKOH, Co., Ltd. Laser irradiation device, laser irradiation system, and method for removing coating or adhering matter
US10280558B2 (en) 2012-07-10 2019-05-07 Woodrow Scientific Limited Methods and apparatus for laser cleaning of fabric materials
US10407821B2 (en) 2012-07-10 2019-09-10 Woodrow Scientific Ltd. Methods and apparatus for laser cleaning
EP2928635B1 (en) 2012-12-04 2017-02-22 Ewag AG Laser machining device and method for machining a workpiece by using a laser machining device
DE102013105878A1 (en) * 2013-06-06 2014-12-11 Accuride International Gmbh Surface-coated telescopic rail
DE102013114706A1 (en) * 2013-12-20 2015-06-25 Sandvik Surface Solutions Division Of Sandvik Materials Technology Deutschland Gmbh Cleaning of press plates or rotating press belts
US9862009B2 (en) 2013-12-20 2018-01-09 Hueck Rheinische Gmbh Cleaning of press plates or endless press belts
DE102013114706B4 (en) * 2013-12-20 2017-02-16 Sandvik Surface Solutions Division Of Sandvik Materials Technology Deutschland Gmbh Cleaning of press plates or rotating press belts
DE102016102771A1 (en) * 2016-02-17 2017-08-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for joining metallic workpieces and apparatus for joining
RU2682423C1 (en) * 2018-05-21 2019-03-19 Федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В.И. Ульянова (Ленина) Laser cleaning of paper based documents

Similar Documents

Publication Publication Date Title
JP2019141909A (en) Deposit removal method and deposit removal apparatus
DE69908745T2 (en) Laser processing head
US6825440B2 (en) Laser beam machining method and apparatus
US7858901B2 (en) Focusing an optical beam to two foci
ES2359301T3 (en) Laser scanner.
JP5265375B2 (en) Apparatus and method for X & Y two-dimensional cutting direction machining with set beam splitting using 45 degree beam splitting orientation
EP0452138B1 (en) Apparatus and method for automatically aligning a welding device for butt welding workpieces
US4675501A (en) Laser apparatus with novel beam aligning means and method of laser processing of workpieces using same
EP0135851B1 (en) Process and device for marking parts, especially electronic components
US20120321735A1 (en) Color sensing for laser decoating
EP0785838B1 (en) Device for the layered production of an object by laser sintering
US6664507B2 (en) Laser machining apparatus
JP5431831B2 (en) Laser processing equipment
US6331692B1 (en) Diode laser, laser optics, device for laser treatment of a workpiece, process for a laser treatment of workpiece
US7134946B1 (en) Apparatus to treat and inspect a substrate
DE60220343T2 (en) Welding device with a miniaturized laser beam
EP1777030B1 (en) Laser thermal forming systems with active cooling
EP0882540A1 (en) Optical device for laser machining
US20030045031A1 (en) Dicing method and dicing apparatus for dicing plate-like workpiece
CA1247167A (en) End-of-arm tooling carousel apparatus for use with a robot
KR20110038073A (en) Method for eccentrically orienting a laser cutting beam in relation to a nozzle axis and for cutting at an angle; corresponding laser machining head and laser machining tool
US4539462A (en) Robotic laser beam delivery apparatus
EP2150372B1 (en) Method for material removal and device for carrying out said method
AT391289B (en) Processing machine like lighting cutting machine od. dgl.
US20040169021A1 (en) Hand held powder-fed laser fusion welding torch

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection