DE112012006740T5 - Laser preheating processing device - Google Patents

Abstract

The present invention relates to a laser preheating processing apparatus, and more particularly, to a laser preheating processing apparatus which performs processing after locally warming and softening a processing area of a material to be processed by using a laser generating module, adding a pan and a rotation function. The present invention provides a laser preheating processing apparatus having a first and a second articulation unit enabling a machining operation, and a first laser generating module unit configured to apply a laser beam to a preheating area of a material to be processed in accordance with a movement of the first and second the second articulated connection unit to emit; a third and a fourth articulated connection unit, which allow a processing sequence; and a second laser generation module unit installed in correspondence with the first laser generation module and radiating a laser beam to another preheat area of a material to be processed according to the third and fourth joint movement; a control unit that differentiates the material to be processed into a first work area and a second work area, wherein the first work area is processed with a laser preheat work by a first laser generation module unit and the second work area with a laser preheat work by a second laser generate module unit.

Description

Reference to related applications

This application claims priority from PCT application no. PCT / KR2012 / 006018 , filed on Jul. 27, 2012, in the Korean Intellectual Property Office, the disclosure of which is hereby incorporated by reference into the disclosure of this application.

background

1. Field of the invention

The present invention relates to a laser preheating processing apparatus, and more particularly, to a laser preheating processing apparatus provided that, after partially preheating and softening a processing part, a material is processed by using a laser generating module having an additional pivoting and rotating function.

2. Description of the Related Art

In general, a workpiece made of materials such. For example, a titanium alloy, excellent features such. As an insulating property, high temperature resistance, wear resistance and corrosion resistance, therefore, it is largely in the high technology sector, such. In the automotive and aerospace industries. However, a workpiece having these materials has difficulty in working due to high hardness and brittleness. Thus, the research and development of combined processing machines in which a tool or equipment is integrated in the same machine for cutting and machining, permanently stops.

The research and development for the integration of a laser technology is actively continued, eg. For example, when a part of the workpiece is locally preheated and softened when machining a workpiece from material difficult to be cut, it is easier to cut than the workpiece, whereby machinability can be improved.

As relevant state of the art is the Korean patent registration in Official Gazette 10-0597907 (2006.6.30).

The disclosed patent registration includes, as in 1 shown, a temperature detecting device which is adapted to a temperature of a workpiece 3 capture; a laser generator 120 configured to generate a laser beam incident on the workpiece 3 can be radiated; a Kühlgaszuführeinheit 130 that supplies cooling gas to the workpiece 3 to cool; a nozzle 125 one side of which collimates a laser beam generated when connected to a laser generator 120 with a focusing lens and radiates the collimated laser beam and an inlet cooling gas through an opening and ejects when the Kühlgaszuführeinheit 130 for the cooling gas inlet is connected by an inlet arranged on one side; a control unit 50 containing the laser generating unit 120 and the Kühlgaszuführeinheit 130 by comparing and determining a temperature detected and determined by the temperature sensing device when electronically controlled with the temperature sensing device and laser generating unit 120 and Kühlgaszuführeinheit 130 connected is.

The patent registration with this arrangement can accurately and promptly control a temperature by irradiating a laser beam on a cutting line of a work point, thereby improving workability by preheating a work, and can easily process a difficult-to-cut work and detect a work-piece temperature in real time during machining , and allows selective emission of a laser beam and a cooling gas according to the detected temperature.

In addition, the laser beam allows ejection of a cooling gas through an ejection nozzle, allowing immediate and local cooling, and also allows for different workpiece operations, such as machining. B. preheating before cutting a workpiece, grinding after cutting, a hardening process, laser cutting a workpiece through a nozzle, which is arranged on a start and end point of a workpiece cutting.

However, the disclosed patent registration is equipped with a laser generating unit besides a cutting tool and has a problem that it is difficult to control a certain distance between a work and a laser radiated from a laser generating unit. In other words, the difficulty in continuously controlling the focus of the laser according to the shape of a workpiece causes a problem of a decrease in workability.

Summary

Exemplary embodiments of the present inventive concept overcome the above disadvantages and other disadvantages not described above. Nor does the present inventive concept have to overcome the disadvantages described above, and an exemplary one Embodiment of the present inventive concept can not overcome each of the problems described above.

Therefore, it is an object of the present invention to solve the conventional problems and to provide a laser preheating processing apparatus having a pan and rotate function whose laser focus is adjustable according to an object to be processed.

The other object of the present invention is to provide a laser preheating processing apparatus which is arranged to improve workability by a more accurate laser focusing function using a laser generating module having a panning and rotating function and processing after local softening of a processing part an object to be processed.

According to the object of the present invention, a first laser generating module having a first and a second articulation unit enabling working movement and radiating a laser beam to a preheating portion of a subject according to a movement of the first and second articulated connection unit; a second laser generation module unit having a third and fourth articulation unit enabling working movement and radiating a laser beam to another preheating part of a subject matter according to the third and fourth articulation movement and installed corresponding to the first laser generation module; a controller that differentiates the material of the article to be processed into a first work area and a second work area, wherein the first work area is processed by a first laser generation module unit with a laser preheat processing and the second work area is processed by a second laser generation module with a laser preheat processing.

In addition, the first and third articulations pivot and the second and fourth articulation units rotate back and forth or to the left or right.

In addition, the first and second hinge connection units and the upper unit of third and fourth hinge connection units are installed by being fixed to a ceiling, respectively.

Further, the Schwenkarbeitsradius the first and third articulated connection unit is in each case 180 ° and a first and a second working radius is determined according to a pivot angle of the first and third articulated connection unit.

In addition, a lower unit of the first and second hinge connection unit and the third and fourth hinge connection unit are installed by being respectively fixed to the lower surface.

In addition, the control unit is configured to control a pivotal and rotational movement of first to fourth articulated connection units.

According to the present invention, when two laser generating modules are installed adjacent to a spindle of a milling processing apparatus, a laser beam can be effectively radiated on a surface of a material to be processed with a laser generating module provided with a pan and rotate function and with an effect of radiating a laser beam in front of a milling machining device by a pivoting and rotating function of a laser generating module itself results in a material to be machined with a complex shape.

Brief description of the drawings

The foregoing and other features and advantages of the inventive concepts will become apparent from the particular description of the preferred embodiments of the inventive concepts as illustrated in the accompanying drawings in which like reference numbers refer to the same parts from different angles. The drawings are not necessarily to scale, instead the emphasis is on presenting the principles of inventive concepts. In the drawings shows:

1 FIG. 2 is a schematic view illustrating a workpiece processing apparatus using a conventional laser beam. FIG.

2 a block diagram of a laser preheating processing apparatus according to the present invention,

3a and 3b schematic views of a laser preheating processing apparatus according to the present invention,

4a and 4b 12 is a diagram illustrating a swinging operation of a laser preheating processing apparatus according to the embodiment of the present invention;

5 a schematic view of a laser preheating processing apparatus according to another embodiment of the present invention.

Detailed Description of Exemplary Embodiments

Certain exemplary embodiments of the present inventive concept will now be described in more detail with reference to the accompanying drawings.

In the following description, the same drawing reference numerals for the same elements will be used in different drawings. The objects defined in the specification, such as a detailed construction and elements, are provided to aid a thorough understanding of the present inventive concept. Thus, it will be appreciated that the exemplary embodiments of the present inventive concept may be practiced without these specifically defined items. The known functions or constructions are also not described in detail because they would obscure the invention with unnecessary details.

While the terms such as "first" or "second" may be used to refer to different elements, the elements are not limited by the terms. The expressions are used only for the purpose of distinguishing one element from the other.

The terms used herein are for the purpose of illustrating particular embodiments only and do not limit the present invention. A singular expression also includes the plural, unless something else is specified. The terms "comprise" or "comprise" are used throughout the specification only to indicate the presence of a property, number, step, operation, element, component, or combination thereof described herein, but not an option Presence of one or more of the other features, numbers, steps, operations, elements, components or combinations thereof or any supplement thereto.

The words and claims used in the present invention are not limited to a general or dictionary definition, but should be interpreted according to meaning and concept by conforming to a technical concept of the present invention according to a principle in which the inventor conceives a concept of words, to illustrate them in the most preferred manner.

Preferably, a laser preheating apparatus of the present invention effectively irradiates a laser beam onto a material surface to be processed in accordance with a movement of a pan and tilt function by adding a respective pan and rotation function to a laser generating module when an upper and lower unit is adjacent to a spindle of a milling processing apparatus a hinge connection unit of two laser generating modules are each fixed to a ceiling or on a floor surface.

The present invention, which is configured as above, will be explained in detail with reference to the accompanying drawings.

2 FIG. 10 is a block diagram of a laser preheating processing apparatus according to the present invention and FIG 3a and 3b FIG. 12 are schematic views of a laser preheating processing apparatus according to the present invention. FIG. 4a and 4b 11 are diagrams illustrating a swinging movement of a laser preheating processing apparatus according to the embodiment of the present invention, and FIGS 5 FIG. 10 is a schematic view of a laser preheating processing apparatus according to another embodiment of the present invention. FIG.

As in 2 As shown, a laser preheating processing apparatus of the present invention includes a laser oscillation unit 12 ; a control unit 14 , a first articulated connection unit 22 and a first laser generation module unit 20 connected to a second articulated connection unit 24 is equipped; and a second laser generation module unit 30 on which is a third articulated connection unit 32 and a fourth articulated connection unit 34 having.

As in 3a and 3b In other words, the present invention respectively has a first laser generation module unit 20 and a second laser generation module unit 30 in accordance with a milling device 1 a machine tool.

Here leads a milling device 1 a cutting work of a material to be processed 10 using a milling tool according to a movement of a spindle.

This shows the material to be processed 10 one of a titanium alloy, a superalloy, tungsten, ceramics, and a hybrid material.

In addition, the laser oscillation unit 12 a laser oscillation apparatus which generates a laser beam according to a control of a control unit 14 radiates and as a laser, a solid-state laser, liquid laser, dye laser, gas laser, Semiconductor laser, ultrashort pulse laser including a fiber laser can be used.

In particular, a laser used in laser processing may be an LD-pumped (laser-diode-pumped) YAG laser, CO2 laser, fiber laser, excimer laser, ultrashort pulse laser.

The laser processing technology bundles a high-energy laser into a very small area to obtain a high energy concentration, resulting in a material to be processed 10 can be variously processed using the principle of preheating, melting and evaporating a material, such as free curved cutting, drilling, marking, deburring, welding, surface treatment, micromachining.

The control unit 14 controls a pivotal and rotational movement of a first to fourth articulated connection unit 22 . 24 . 32 and 34 and executes a control to perform a laser preheating work with a respective movement according to the working radius of the first and second laser generating module units 20 and 30 perform.

In other words, the control unit disconnects 14 the material to be processed 10 in a first workspace and a second workspace. In addition, the control unit 14 controlled to the first work area with a laser preheating by a first laser generating module unit 20 and in the second work area is controlled to laser preheat by a second laser generating module unit 30 perform.

The first laser generation module unit 20 has a first and second 22 and 24 on, which enable a work operation, and a laser beam is applied to a preheating area of a material to be processed 10 according to a movement of the first and second articulated connection unit 22 and 24 radiated.

In other words, the present invention has a pivoting and turning function for easily controlling a laser focus according to a shape of the material to be processed, and performs preliminary preheating work to the material to be processed 10 locally warm up, according to a first and second articulated connection unit 22 and 24 out.

The second laser generation module unit 30 has a third and a fourth articulated connection unit 32 and 34 which facilitate a work operation and is corresponding to the first laser generation module unit 20 installed to a laser beam to another preheat area of the material to be processed 10 according to the third and fourth articulated connection unit 32 and 34 radiate.

In other words, the second laser generation module unit 30 a pivoting and rotating function and is corresponding to the first laser generating module unit 20 installed, thereby preheating a pre-heating work to another processing area of the material to be processed 10 locally warm up, by a movement of a third and a fourth articulation unit 32 and 34 is performed.

The first and third articulated connection unit 22 and 32 pivot and the second and fourth articulated connection unit 24 and 34 turn forwards and backwards or left and right.

Here the laser preheating work is carried out because when processing a material to be machined 10 made of difficult-to-cut material a material to be machined 10 In other words, a workpiece that can be cut more easily and machinability also by softening and locally preheating a machining area of a material to be machined 10 is improved by using a laser heat source prior to milling and cutting.

Basically, the first laser generating module unit 20 and the second laser generation module unit 30 a laser medium, a pumping unit, and in addition a switching unit, thereby outputting a laser beam of a predetermined pulse width.

Here, a laser beam emitted from the first and second laser generation module units 20 and 30 is an ultra-short laser pulse with a pulse width of a femtosecond or picosecond unit.

By using a laser beam with the ultrashort pulse, the pulse duration is shorter than a heat diffusion time, whereby an object is exposed to a laser beam at a high energy intensity with an energy transfer between the electron and the interstitial atom.

Consequently, in a region irradiated with a laser beam, a fusion zone or a heat affected zone is usually not observed. A diffused length, in which a laser pulse is absorbed in any material, additionally corresponds to a width of a laser pulse, in which case an ultrashort pulse laser has a short continuous time, which is a diffusion length in which a laser pulse is processed in one Object is absorbed and diffused, also short, whereby an accurate editing is possible.

As in 3a and 3b In addition, upper units of the articulated connection units are shown 20 and 30 a first laser generating module unit 20 and a second laser generating module unit 30 each fixed to the ceiling. This is done, therefore, to make editing easy, and a large work environment of first and second laser generating modules 20 and 30 to obtain. The hinge connection unit of the second laser generation module unit 30 and an upper unit of the milling device 1 a machine tool can be advantageously fixed together on a ceiling.

In addition, a working radius of the first and second laser generating module units 20 and 30 only possible within a radius of 180 degrees. In other words, the swing angle radius of the first or second laser generation module unit is located 20 and 30 each within 180 degrees, but when there are three laser generating module units in a processing apparatus according to the present invention, a swing angle working radius can be determined within 90 degrees.

However, one reason why two of a first and second laser generating module unit 20 and 30 installed according to the present invention, the processing efficiency. In other words, the work efficiency improves more when there are three instead of two laser generation module units.

Consequently, processing can be alternately performed. When the laser generation module unit 20 is performed as preprocessing in a first working area and a second laser generating module unit 30 can be performed as a post-processing in a second work area, the work efficiency can be improved. When the first laser generation module unit 20 or a second laser generating module unit 30 is fixed, a laser generating module unit is also in a processing direction or in a direction of a processing apparatus 1 a machine tool movable.

In addition, a connection end of the second laser generation module unit has 30 a first articulated connection unit 32 (Swinging) or a second articulated connection unit 34 (Turn) on, as in 4a and 4b shown. In other words, a processing according to the types of material to be processed 10 To simplify, may be a first articulated connection unit 32 (Pivoting a first shaft) or a second articulated connection unit 34 (Rotation of a second shaft) can be optionally used.

If, for example, a material to be processed 10 a difficult to cut material is round, as in 3a shown, a machining sequence of a material to be processed 10 be much easier if a third and fourth articulation unit 32 and 34 a second laser generating module unit 30 exist, in other words, a pivoting function of a first shaft and a rotational function of a second shaft.

A hinge connection unit of the second laser generation module unit 30 On the other hand, on a bottom surface of a bottom part, not an upper part 36 , installed and fixed on it. In other words, a lower unit 38 a second laser generating module unit 30 is fixed to and installed on a bottom surface of a milling apparatus of a machine tool, thereby preheating or machining by changing an installation position according to a shape of a material to be worked 10 or a work environment.

In other words, it is obvious that an upper unit 36 or a lower unit 38 a hinge connection unit of a second laser generation module unit 30 optionally installed on a ceiling or floor surface and fixed to a preferred working environment according to the material to be worked 10 or create an editing environment.

In addition, an operation of a laser preheating processing apparatus according to the present invention is as follows.

When editing a round machining article material 10 , as in 3a first, a preheating work of a laser is performed before a milling work of a milling apparatus 1 executed.

In other words, before machining by a milling, the material to be machined 10 can be cut more easily if a machining part of a material to be machined 10 softened using a laser preheat source prior to cutting and preheated locally.

The processing area of the material to be processed 10 here goes a Vorwärmarbeit to, in other words, a material to be processed 10 by a movement of a first and second articulated connection unit 32 and 34 using a pan and tilt function to easily achieve a laser focus according to a first and second hinge connection unit 32 and 34 the second laser generation module unit 30 to control, locally preheat.

In other words, if an upper unit 36 or a lower unit 38 a hinge connection unit of the second laser generation module unit 30 Installed on a floor surface fixed, the laser beam can be efficiently applied to a surface of the material to be processed 10 are radiated in accordance with a pivotal movement or a rotational function movement, that of a second laser generating module unit 30 are added.

Thus, a laser preheating processing apparatus of the present invention can efficiently irradiate a laser beam onto a material surface to be processed in accordance with a pivotal or rotational movement, that of a first and a second laser generation module unit 20 and 30 are added, wherein an upper unit or a lower unit of a hinge connection unit of both a first and a second laser generation module unit 20 and 30 on a ceiling or a floor surface, next to a spindle of a milling machine, are installed fixed.

It is obvious that the present invention may be embodied in various different ways by the inventors, although the specific embodiment of the present invention has been recited and illustrated. These modified embodiments should not be independently understood with respect to a technical idea or from the point of view of the present invention, but should be included in the appended claims of the present invention.

The preferred embodiments of the invention have been explained in that one of ordinary skill in the art will understand that the invention can be practiced with modification without departing from the basic characteristics of the invention. Thus, the foregoing example embodiments and advantages are merely exemplary and should not be construed to limit the present invention. The present teaching can be easily applied to other types of devices. The description of the exemplary embodiments of the present inventive concept is also illustratively provided and is not limited to the scope of the claims.

Claims (8)

A laser preheating processing apparatus comprising: A first laser generating module having a first and a second articulating unit enabling working movement and radiating a laser beam to a preheating part of a material to be processed in accordance with a movement of the first and second articulating unit; A second laser generating module unit having a third and fourth articulation unit enabling working movement and radiating a laser beam to another preheating part of a material to be processed according to the third and fourth articulation movement, and installed corresponding to the first laser generating module; and A controller that differentiates the material to be processed into a first work area and a second work area, wherein the first work area is processed with a laser preheat work by a first laser generation module unit and the second work area with a laser preheat work by a second laser generate module. The laser preheating processing apparatus according to claim 1, wherein the first and third hinge connection units pivot. A laser preheating processing apparatus according to claim 1, wherein said second and fourth hinge connection units rotate back and forth or left and right. Laser preheating processing apparatus according to claim 2 and 3, wherein the first and the second hinge connection unit and an upper part of the third and the fourth hinge connection unit are respectively fixed to the ceiling. The laser preheating processing apparatus according to claim 2, wherein the swing radius of the third and fourth hinge connection units is 180 degrees, respectively. A laser preheating processing apparatus according to claim 2, wherein a first and a second operating range are determined according to a pivoting angle of the first and third articulated connection units. A laser preheating processing apparatus according to claim 2 and 3, wherein the lower part of the first and second hinge connection unit and the third and fourth hinge connection unit are respectively fixed to the bottom surface. The laser preheating processing apparatus according to claim 1, wherein the control unit controls pivotal and rotational movement of first to fourth articulated connection units.

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