KR101217485B1 - Local Heat Treatment System of the Automatic Borrowing Body Parts which uses Diode Laser having High Compressed Air Injection Cooling Device and the Heat Treatment Method - Google Patents

Abstract

The present invention is a local heat treatment apparatus for automobile parts using a diode laser, further comprising a high-pressure air injection cooling means mounted to the laser head to minimize the plate-like automotive parts and the surface when the heat source of the laser beam heats the steel material The present invention relates to an apparatus and a method for simultaneously removing an oxide layer produced in a heat treatment. More specifically, a laser head for scanning the laser beam on the local parts of the automotive parts, and heats the localized parts while moving at a 1 to 20 mm / sec heat treatment rate; Moving means connected to the laser head to move the laser head spaced apart from the automobile part by a predetermined distance; A diode laser generator having an output of 2000 to 6000 W connected to the laser head to provide a diode laser to the heat treatment head; It is provided in the form of an air jet nozzle on one side of the laser head, spaced apart from the laser beam generated by the laser head at a specific interval, the high pressure air injection cooling means for cooling by spraying high-pressure air at the end of the air injection nozzle to the heat treated automotive parts; A pressure regulating means connected to the high pressure air injection cooling means to adjust the pressure of the high pressure air injected from the cooling means; A heat treatment temperature controller electrically connected to the diode laser generator to adjust the output of the diode laser to control the heat treatment temperature; A cooling temperature controller connected with the high pressure air injection cooling means to control a temperature of air injected from the cooling means; And a control unit electrically connected to the laser head and the moving means to selectively heat the local parts of the automobile parts, the local heat treatment apparatus of the automotive parts using the diode laser having the high-pressure air injection cooling means. It is about.

Description

Local heat treatment system of the automatic borrowing body parts which uses diode laser having high compressed air injection cooling device and the heat Treatment Method}

According to an aspect of the present invention, there is provided a local heat treatment apparatus for an automobile component using a diode laser, the apparatus including a high pressure air jet cooling means mounted on a laser head to minimize deformation in a thin plate-shaped automobile component, and a heat source of a laser beam to heat a steel material. An apparatus and a method for simultaneously removing an oxide layer formed on a surface during heat treatment.

In general, in order to reinforce the strength of the automotive parts, the thickness of the material or a heat treatment method requiring high temperature heating is used. Among these, firstly, the indirect heating method is a method of using a furnace (furnace) to raise the temperature in the furnace to make the heated object to a high temperature. Such a method using a furnace has the advantage of performing heat treatment in large quantities at one time, but has had a problem of hardening to unnecessary parts.

In addition, the direct heating method is a method of using a high frequency heat source, which enables local heating and instant heating, and is widely used in press mold heat treatment. However, in the case of the direct heating method using a high frequency heat source among these, the production of a special coil suitable for the shape of the part is required as a technique applying the magnetic induction of the solid. Accordingly, there is a problem that a special coil must be manufactured according to the shape of the part. In addition, such a coil had a problem that greatly affects the final heat treatment properties. In addition, since a very high frequency band is required depending on parts, a large-scale facility for oscillating high frequency is required.

In addition to the above method, there is conventionally a heat treatment method using a CO ₂ laser, an Nd-YAG laser, or a diode laser as a heat source. FIG. 1 shows a schematic cross-sectional view of a heat treatment apparatus for performing heat treatment by irradiating a laser beam to a local part of an automobile part. As shown in FIG. 1, heat treatment is performed while the laser beam 20 is scanned and heated to a portion requiring heat treatment. The quenching depth by the heat treatment, that is, the thickness of the heat treatment layer 30 is about 1.5 mm.

In this method, the cooling treatment is naturally cooled by the ambient air and heat is transferred from the heat absorbing layer 40 without a separate cooling treatment. However, in the case of a thin plate having a thickness of about 0.5 to 6 mm, the thickness of the heat absorbing layer 40 is small, and the volume of the heat absorbing layer 40 during heat treatment is less than that during the mold heat treatment, thereby degrading the heat absorption effect. In addition, when the laser beam 20 is scanned (laser quenched), deformation due to a temperature difference occurs between the heat treatment layer 30 and the non-heat treatment layer. In addition, the oxide layer 50 is formed on the surface of the metal material when the temperature increases in the heat treatment layer 30. In order to prevent the oxide layer 50 from being generated, the problem may be solved by Al-Si coating or the like. In addition, there is a problem that a post-treatment process for removing the oxide layer 50 is added during uncoating.

FIG. 2A shows a schematic cross-sectional view of a heat treatment apparatus in which a laser beam is scanned in an automotive part having a thickness of 6 mm or less. 2B illustrates a cross-sectional view of a thin plate in which the heat treatment layer 30 is expanded and the heat absorbing layer 40 is relatively contracted due to a temperature difference after heat treatment. 2C is a cross-sectional view of the thin plate on which the oxide layer 50 is formed on the top surface of the thermosetting layer 31 after heat treatment. Therefore, in order to solve this problem, a heat treatment apparatus and a heat treatment method for heat treatment on a thin plate having a thickness of less than 6mm was required.

Accordingly, the present invention has been made to solve the above problems, the present invention is heat treatment capable of local heating of automotive parts which is an objective part that can improve various problems of the direct or indirect heat treatment method by using a diode laser beam It is an object of the present invention to provide an apparatus and a method for heat treatment thereof.

In addition, the present invention provides a more improved heat treatment apparatus and method by providing a high-pressure air injection cooling means in the laser head, by cooling the locally heat-treated locally, and by removing the oxide layer with the heat treatment according to the laser beam scanning. It becomes possible. Therefore, the heat treatment is possible even without forming the oxide layer and deformation even in the automotive parts with a thin thickness of the heat absorption layer.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

SUMMARY OF THE INVENTION An object of the present invention is to provide a laser head for scanning a laser beam on a local part of an automobile part, and heating the local part by heat treatment while moving at a 1 to 20 mm / sec heat treatment rate; Moving means connected to the laser head to move the laser head spaced apart from the automobile part by a predetermined distance; A diode laser generator having an output of 2000 to 6000 W connected to the laser head to provide a diode laser to the heat treatment head; It is provided in the form of an air jet nozzle on one side of the laser head, spaced apart from the laser beam generated by the laser head at a specific interval, the high pressure air injection cooling means for cooling by spraying high-pressure air at the end of the air injection nozzle to the heat treated automotive parts; A pressure regulating means connected to the high pressure air injection cooling means to adjust the pressure of the high pressure air injected from the cooling means; A heat treatment temperature controller electrically connected to the diode laser generator to adjust the output of the diode laser to control the heat treatment temperature; A cooling temperature controller connected with the high pressure air injection cooling means to control a temperature of air injected from the cooling means; And a control unit electrically connected to the laser head and the moving means to selectively heat the local parts of the automobile parts, wherein the control unit selectively heats the local parts of the automobile parts. Can be achieved.

The moving means is a six-axis robot, the distance between the position where the laser beam is scanned and the high-pressure air is scanned is 10 ~ 100mm, the vertical distance between the end of the air injection nozzle and the car parts may be characterized in that 5 ~ 50mm. .

A head cooler provided at one side of the laser head to prevent overheating of the heat treatment head; And a diode laser cooler provided at one side of the diode laser generator to cool the diode laser generator.

The thickness of the automotive parts may be characterized in that 0.5 ~ 6mm.

In another category, an object of the present invention is to provide a local heat treatment method for an automotive component using a heat treatment apparatus, the method comprising: checking data of an automotive component by a controller and setting a heat treatment position of the automotive component; Setting a movement path of the six-axis robot such that the control unit moves the laser head based on the set heat treatment position; The control unit controls the diode laser generator and the heat treatment temperature controller so that the heat treatment temperature of the diode laser provided to the laser head is 900 to 1400 ° C., and the heat treatment speed is 1 to 20 mm / sec, and the cooling temperature controller is a high pressure air jet cooling means. Setting a cooling temperature of the; Supplying a diode laser to a laser head moving by a six-axis robot; The laser head scans the laser beam at the heat treatment position, and the 6-axis robot moves along the movement path, thereby heat treating the local parts of the automobile part; And a pressure regulating means for adjusting the air pressure of the high pressure air injection cooling means, and the high pressure air injection cooling means injecting high pressure air to cool the heat-treated car parts. A method of local heat treatment of automotive parts using a diode laser.

In the heat treatment step, the control unit may further include the step of sensing the heat treatment temperature to move the diode laser cooler to maintain the heat treatment temperature 900 ~ 1400 ℃.

In the cooling step, it may be characterized in that the oxide layer 50 generated after the laser beam scanning is removed by the high pressure air injected from the high pressure air injection cooling means.

Therefore, according to the embodiment of the present invention as described above, first, the present invention has the effect of heating only the local part of the target specific automotive parts by the heat treatment method using a diode laser.

Secondly, the present invention only has a very good effect in terms of thermal efficiency by heating only the local parts of a particular automobile part.

Third, the present invention has a heat treatment method using a diode laser, the use environment is clean, there is an environmentally friendly effect.

Fourth, the present invention does not require a separate heating coil unlike the conventional high frequency heating method, and thus has the same effect as the high frequency heating method in that the equipment is simple, economical, and instantaneous heating is possible.

five. The present invention is provided with a high-pressure air injection cooling means on one side of the laser head, thereby cooling the localized heat treatment continuously after the heat treatment, by removing the formed oxide layer can increase the heat treatment efficiency even in the local heat absorption layer thickness of 6mm or less There is an advantage.

Six, the control unit of the present invention by controlling the pressure control means, the cooling temperature controller connected to the cooling means, has the effect of controlling the appropriate cooling temperature and the pressure of the high-pressure air.

Seven, the control unit of the present invention has the advantage that by controlling the head cooler, heat treatment temperature controller, diode laser cooler to prevent overheating of the laser head and diode laser generator, and to set the appropriate heat treatment temperature.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a partial cross-sectional view of a heat treatment apparatus using a conventional diode laser for scanning a laser beam on a local part of an automobile part;
FIG. 2A is a partial cross-sectional view of a heat treatment apparatus using a conventional diode laser that scans a laser beam to a local portion of an automotive component having a heat treatment layer of 6 mm or less; FIG.
Figure 2b is a cross-sectional view of the automotive part deformed by heat treatment by a conventional heat treatment apparatus using a diode laser,
2C is a cross-sectional view of an automotive part in which an oxide layer is formed by heat treatment by a conventional heat treatment apparatus using a diode laser,
3 is a perspective view of an automobile component according to an embodiment of the present invention;
4 is a block diagram of a local heat treatment apparatus for an automotive part using a diode laser having a high pressure air injection cooling means according to an embodiment of the present invention;
Figure 5a is a partial cross-sectional view of the heat treatment apparatus for cooling by spraying the high pressure air in the high pressure air injection cooling means that the laser beam is locally heat-treated from the laser head according to an embodiment of the present invention,
5B is a partial cross-sectional view of a heat treatment apparatus in which an oxide layer is removed by high pressure air injected from the high pressure air injection cooling means;
6 is a flow chart showing a local heat treatment method for an automotive part 1 using a diode laser according to the present invention;
7 illustrates a block diagram of a signal flow of a controller according to an embodiment of the present invention.

With reference to the accompanying drawings will be described in detail a preferred embodiment that can be easily implemented by those skilled in the art to which the present invention pertains. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is 'connected' to another part, this includes not only 'directly connected' but also 'indirectly connected' with another element in between. do. In addition, "including" any component does not exclude other components unless specifically stated otherwise, it means that may further include other components.

<Configuration and Operation of the Heat Treatment Device>

Hereinafter, the configuration of the local heat treatment apparatus 10 of the automotive component 1 using the diode laser having the high-pressure air injection cooling means 200 according to an embodiment of the present invention. First, FIG. 3 is a perspective view showing an automobile part 1 according to the present invention. As shown in FIG. 3, the car frame, the car bumper installation unit, the car engine room, and the car door, which are heat treatment positions of the car body part 1, are divided and illustrated in various colors. It is preferable that the above-described automotive parts 1 are heat-treated for each component before assembling into an automobile and then assembled in an automobile form. And, depending on the position of the heat treatment will be possible to heat treatment even after the automobile part 1 is assembled in the form of a vehicle. The automotive part 1 to be subjected to the heat treatment of the present invention is applicable not only to a mold having a sufficient thickness of the heat absorbing layer 40 but also to a thin plate material having a thickness of 6 mm or less.

FIG. 4 shows a block diagram of a local heat treatment apparatus 10 for an automobile part 1 using a diode laser according to an embodiment of the present invention. As shown in Figure 4, the heat treatment apparatus 10 according to an embodiment of the present invention, the laser head 100 for scanning the laser beam 20, the six-axis robot 300 for moving the laser head 100 Movement means provided with a), the diode laser generator 400 for generating a diode laser, the heat treatment temperature controller 500 for adjusting the heat treatment temperature, the head cooler 110, the diode laser cooler 410, one side of the laser head 100 High pressure air injection cooling means 200 coupled to the pressure control means 210 for adjusting the pressure of the high pressure air 201 injected from the cooling means 200, cooling temperature controller for controlling the temperature of the high pressure air 201 220 is included.

 The laser head 100 scans and heat-treats the diode laser beam 20 in the local part of the automobile component 1, and the heat treatment rate heat-processes the automobile component 1 at 5-20 mm / sec. At this time, the heat treatment rate is preferably 10 mm / sec. Here, the heat treatment means used for the laser head 100 uses a diode laser generator to be described later. In this case, when the heat treatment rate is 5 mm / sec or less, a large amount of heat input heat is generated and a phenomenon of melting on the heat treatment surface occurs. In addition, when the heat treatment rate is 20mm / sec or more, there is a problem that the phenomenon that the heat treatment is not performed because the heat input heat amount is small. Here, since the laser head 100 is moved through the moving means provided with the six-axis robot 300 to be described later to receive the diode laser generated from the diode laser generator 400 by using an optical cable of the automotive component (1) The localized laser beam 20 is scanned and heat treated.

One side of the above-described laser head 100 is further provided with a head cooler 110. In this case, the head cooler 110 prevents overheating of the laser head 100. The head cooler 110 may use a cooler having a conventional cooling device.

In addition, as shown in FIG. 4, the high pressure air injection cooling means 200 is coupled to one side of the laser head 100. The high pressure air injection cooling means 200 is provided in the form of an air injection nozzle. Accordingly, the high pressure air 201 is injected into the heat-treated portion at the end of the air injection nozzle to cool the heat-treated portion and remove the formed oxide layer 50. The position where the laser beam 20 generated by the laser head 100 is scanned and the position where the high pressure air 201 is scanned are placed at a distance of about 10 to 100 mm. In addition, it is preferable that the vertical distance between the end of the air jet nozzle and the automobile part 1 is about 5 to 50 mm.

In addition, one side of the high-pressure air injection cooling means 200 is provided with a pressure adjusting means 210. The pressure regulating means 210 controls the pressure of the high pressure air 201 injected from the high pressure air injection cooling means 200 to the vehicle parts 1. In addition, the high temperature air injection cooling means 200 is connected to the cooling temperature controller 220. The cooling temperature controller 220 adjusts the temperature of the high pressure air 201 injected to the local portion of the heat treated vehicle part 1. An appropriate cooling temperature is set based on the material of the vehicle body, the heat treatment rate, and the thickness of the heat treatment layer 30.

FIG. 5A is a heat treatment in which the laser beam 20 is locally scanned and heat treated in the laser head 100 according to an embodiment of the present invention, and the high pressure air injection cooling means 200 sprays and cools the high pressure air 201. A partial cross-sectional view of the device 10 is shown. As shown in Figure 5a, the laser head 100 is connected to the six-axis robot 300 to be described later to move, and the high-pressure air injection cooling means 200 coupled to one side of the laser head 100 also moves integrally. do. As shown in FIG. 5A, the diameter of the laser beam 20 is about 10 to 80 mm, and the position where the laser beam 20 is scanned and the position where the high pressure air 201 is injected is about 10 to 100 mm. In addition, the distance between the air jet nozzle end and the heat treatment layer 30 is preferably about 5 ~ 50mm.

The laser head 100 may include an optical lens to adjust the width W of the laser beam 20 to be scanned. The width W of the laser beam 20 can be appropriately adjusted according to the material, thickness, and heat treatment rate. The width W of the diode laser beam 20 is preferably set to about 10 to 80mm. In addition, the diode laser beam 20 can be provided in a variety of beam forms, such as circular beam, line beam, square beam, ring-shaped beam and elliptical beam. Thus, the desired beam shape can be used for various types of automobile parts 1. Here, the shape of the diode laser beam 20 is made possible by adjusting the lens provided in the laser head 100.

5B is a partial cross-sectional view of the heat treatment apparatus 10 in which the oxide layer 50 is removed by the high pressure air 201 injected from the high pressure air injection cooling means 200. As shown in FIG. 5B, the heat treatment layer is heat treated by the laser beam 20 scanned by the laser head 100. At the same time, the oxide layer 50 is generated on the upper surface of the heat treatment layer (thermosetting layer 31), and the oxide layer 50 is removed by the high pressure air 201 injected from the high pressure air injection cooling means 200. have.

The moving means is connected to the laser head 100. In one embodiment of the invention the moving means is provided with a six-axis robot (300). The six-axis robot 300 is combined with the laser head 100 serves to move the laser head 100 to the local for heat treatment of the automotive part (1). Here, the six-axis robot 300 can be used for the conventional automotive automation system. In addition, the high-pressure air injection cooling means 200 coupled to the laser head 100 is also integrally moved by the operation of the six-axis robot 300.

In addition, the heat treatment apparatus 10 according to an embodiment of the present invention includes a diode laser generator 400. The diode laser generator 400 generates a diode laser and is electrically connected to the laser head 100 to provide a diode laser to the laser head 100. Here, the output of the diode laser generator 400 may be 2,000W to 6,000W, but the output of the preferred diode laser generator 400 of the present embodiment is 4,000W.

One side of the diode laser generator 400 may further include a diode laser cooler 410. This serves to cool the temperature of the diode laser generator 400. The diode laser cooler 410 prevents overheating generated when the diode laser generator is used for a long time. That is, when the temperature exceeds the set threshold by measuring the temperature of the diode laser generator 400, it selectively operates to cool the diode laser generator 400. At this time, the diode laser cooler 410 is a conventional air-cooled or water-cooled cooling A cooler equipped with means can be used.

The heat treatment temperature controller 500 is electrically connected between the diode laser generator 400 and the laser head 100. Thus, by controlling the output of the diode laser generated in the diode laser generator 400, the heat treatment temperature is controlled. At this time, the temperature controller 5 controls the heat treatment temperature to 900 ~ 1400 ℃. If the heat treatment temperature is less than 900 ℃ heat generation possible heat treatment is small, there is a problem that does not heat treatment. In addition, when the heat treatment temperature is 1400 ℃ or more, the heat input amount is large, the problem of melting the heat treatment surface occurs. Therefore, the temperature controller serves to maintain a constant temperature of the heat treatment of the diode laser provided from the diode laser generator 400. The above heat treatment temperature may vary depending on the material of the automotive part 1 to be heat treated, but the heat treatment temperature is most preferably 1100 ° C.

The control unit 600 is a laser head 100, 6-axis robot 300, diode laser generator 400, temperature controller, head cooler 110, diode laser cooler 410, pressure control means 210, cooling temperature It is electrically connected to the controller 220. At this time, the control unit 600 controls to selectively heat the local portion of the vehicle component (1). That is, the controller 600 controls the operation of the laser head 100, the movement of the 6-axis robot 300, the operation of the diode laser generator 400 and the heat treatment temperature of the heat treatment temperature controller 500. In addition, whether the high pressure air injection cooling means 200, the operation of the diode laser cooler 410, the operation of the head cooler 110, the pressure setting by the pressure control means 210, the cooling temperature controller 220 To control the cooling temperature setting. For this purpose, it will be apparent that the controller 600 is organically coupled with each device. In addition, the control unit 600 includes a normal input unit and a display unit to control each device.

<Of heat treatment method Example >

Fig. 6 is a flowchart showing a method of local heat treatment of an automobile part 1 using a diode laser according to the present invention. The heat treatment method according to an embodiment of the present invention uses the heat treatment apparatus 10 described above. As shown in FIG. 6, in the heat treatment position setting step S100, the control unit 600 confirms the data of the automobile component 1, and sets the heat treatment position of the automobile component 1. At this time, the heat treatment position of the vehicle is shown in Figure 3, such as car frame, car bumper installation, car engine room and car door.

The movement path setting step (S110) sets the movement path of the 6-axis robot 300 to move the laser head 100 based on the heat treatment position set by the controller 600. This is to prevent the laser head 100 from colliding with the auto parts 1 while the laser head 100 moving to the heat treatment position of the auto parts 1 moves at a predetermined distance apart from the car parts 1. .

In addition, the controller 600 controls the cooling temperature controller 220 to set the temperature of the high pressure air 201 to be sprayed on the vehicle component 1. In addition, the pressure of the high pressure air 201 to be injected from the high pressure air injection cooling means 200 is set (S130).

In addition, the controller 600 controls the diode laser generator 400 and the temperature controller 5. At this time, the heat treatment temperature of the diode laser provided to the laser head 100 is input to 900 ~ 1400 ℃, and the heat treatment rate is input to 1 ~ 20mm / sec. As described above, when the heat treatment temperature is outside the 900 ~ 1400 ℃ and the heat treatment rate 1 ~ 20mm / sec, the heat treatment effect of the automotive part 1 does not occur as the desired target. Therefore, although there is a difference depending on the material and the thickness of the material, it is preferable to input at a heat treatment temperature of 1100 ℃ and a heat treatment rate of 10 mm / sec. Here, the output of the diode laser generator 400 can be up to 2,000W ~ 6,000W, but preferably 4,000W.

In the diode laser supplying step (S140), the laser head 100 moved by the six-axis robot 300 receives a diode laser provided from the diode laser generator 400.

In the heat treatment step S150, the laser beam 20 is scanned by the diode laser supplied from the laser head 100 to the local parts of the automobile parts 1, and the heat treatment is performed. At this time, in the heat treatment step S150, the distance between the laser head 100 and the surface of the automotive part 1 to be heat treated is about 235 mm. In addition, the automotive part 1 may use a high tensile strength steel sheet. However, the heat treatment system of the present invention can be applied to any kind of car body parts or chassis parts as long as they correspond to automobile parts. In addition, as described above, the automotive part 1 may heat-treat not only a mold having a sufficiently thick heat absorbing layer 40 but also a thin plate having a thickness of 6 mm or less. In addition, in the heat treatment step (S150), the width (W) of the laser beam 20 is scanned in the local portion of the automotive part 1 can be adjusted to 10mm ~ 80mm by the lens.

Then, the high-pressure air injection cooling means 200 is to spray the high-pressure air 201 to the local portion of the heat-treated car parts (1) (S160). As described above, the high pressure air injection cooling means 200 is coupled to one side of the laser head 100, and is configured in the form of an air injection nozzle. The high pressure air 201 is sprayed to the localized portion where the heat treatment is performed and installed at the rear of the laser head 100, and the oxide layer 50 is removed. As described above, it is preferable that the position between the portion where the laser beam 20 is scanned and the position where the high pressure air 201 is injected is about 10 to 100 mm.

The heat treatment step (S150) and the cooling step (S160) proceeds at a set heat treatment rate during the heat treatment and cooling process, and the six-axis robot 300 maintains a predetermined distance from the automobile component 1 along the set movement path. The laser head 100 is moved.

In the above-described heat treatment step (S150), the controller 600 senses the heat treatment temperature of the diode laser by using the temperature controller to maintain the heat treatment temperature of the diode laser at 900 to 1400 ° C. In addition, in the cooling step (S160), the controller 600 controls the pressure regulating means 210 and the cooling temperature controller 220 to maintain the set pressure and temperature.

In addition, while the heat treatment and cooling is performed by the movement of the six-axis robot 300, the controller 600 measures the temperature of the laser head 100, when the laser head 100 exceeds the set threshold temperature, the head cooler Actuate 110 to cool the laser head 100. In addition, the controller 600 measures the temperature of the diode laser generator 400 to operate the diode laser cooler 410 to cool the diode laser generator 400 when it is overheated above a set threshold temperature. This step is continued until the heat treatment ends for all the set heat treatment positions.

7 is a block diagram of a signal flow of the controller 600 according to an embodiment of the present invention. As shown in FIG. 7, the controller 600 controls the 6-axis robot 300. Therefore, the movement path of the 6-axis robot 300 is set to control the movement of the 6-axis robot so that the heat treatment is possible at the interval between the laser head 100 and the local portion and the heat treatment is required. In addition, the controller 600 controls the pressure regulating means 210 and the cooling temperature controller 220 connected to the high pressure air injection cooling means 200. Therefore, the air pressure of the high pressure air 201 injected from the high pressure injection cooling means 200 is adjusted, and the temperature of the high pressure air 201 injected is controlled.

In addition, the controller 600 controls the heat treatment temperature controller 500 provided between the laser head 100 and the diode laser generator to adjust the heat treatment temperature. The controller 600 controls the head cooler 110 to prevent overheating of the laser head 100 and to prevent overheating of the diode laser generator 400 by controlling the diode laser cooler 410.

1: auto parts
10: Local heat treatment apparatus of automobile parts
20: laser beam
30: heat treatment layer
31: thermosetting layer
40: heat absorption layer
50: oxide layer
100: laser head
110: head cooler
200: high pressure air injection cooling means
201: high pressure air
210: pressure regulating means
220: cooling temperature controller
300: 6 axis robot
400: diode laser generator
410: diode laser cooler
500: heat treatment temperature controller
600: control unit

Claims (7)

A laser head which scans a laser beam on a local part of an automobile part and heats the local part while moving at a heat treatment speed of 1 to 20 mm / sec;
Moving means connected to the laser head to move the laser head spaced apart from the vehicle component by a predetermined distance;
A diode laser generator connected to the laser head to provide a diode laser to the heat treatment head with an output of 2000 to 6000 W;
It is provided in the form of an air jet nozzle on one side of the laser head, spaced apart from the laser beam generated by the laser head at a specific interval, the high pressure to cool by spraying the high-pressure air at the end of the air jet nozzle to the heat-treated car parts Air jet cooling means;
A pressure regulating means connected to the high pressure air injection cooling means to adjust the pressure of the high pressure air injected from the cooling means;
A heat treatment temperature controller electrically connected to the diode laser generator to control an output of the diode laser to control a heat treatment temperature;
A cooling temperature controller connected to the high pressure air injection cooling means to adjust a temperature of the air injected from the cooling means;
A control unit electrically connected to the laser head and the moving unit to control to selectively heat a local portion of the vehicle component;
A head cooler provided at one side of the laser head to prevent overheating of the heat treatment head; And
A diode laser cooler provided at one side of the diode laser generator to cool the diode laser generator,
The moving means is a multi-axis robot,
The distance between the position where the laser beam is scanned and the position where the high pressure air is scanned is 10 to 100 mm, the vertical distance between the end of the air injection nozzle and the vehicle parts is 5 to 50 mm, and the thickness of the car parts is 0.5 to 6 mm. A local heat treatment apparatus for an automotive part using a diode laser having a high-pressure air jet cooling means. delete delete delete In the local heat treatment method of an automotive part using the heat treatment apparatus of claim 1,
Confirming data of the automobile parts in the control unit and setting a heat treatment position of the automobile parts;
Setting a movement path of the six-axis robot such that the control unit moves the laser head based on the set heat treatment position;
The control unit controls the diode laser generator and the heat treatment temperature controller so that the heat treatment temperature of the diode laser provided to the laser head is 900 ~ 1400 ℃, the heat treatment rate is 1 ~ 20mm / sec, the cooling temperature controller is a high-pressure air Setting a cooling temperature of the injection cooling means;
The diode laser generator supplying a diode laser to the laser head being moved by the six-axis robot;
The laser head scanning a laser beam at the heat treatment position, and heat treating the local parts of the automobile parts while the six-axis robot moves along the movement path; And
A pressure regulating means for adjusting the air pressure of the high pressure air injection cooling means, and the high pressure air injection cooling means injecting high pressure air to cool the heat-treated car parts; Local heat treatment method of automotive parts using a diode laser having a. The method of claim 5, wherein
In the heat treatment step,
The control unit detects the heat treatment temperature to move the diode laser cooler to maintain the heat treatment temperature 900 ~ 1400 ℃ further comprising the step of automobile parts using a diode laser having a high-pressure air injection cooling means Local heat treatment method. The method of claim 5, wherein
In the cooling step,
A method of local heat treatment of an automotive part using a diode laser having a high pressure air injection cooling means, characterized in that for removing the oxide layer (50) generated after the laser beam scanning by the high pressure air injected from the high pressure air injection cooling means.

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