KR20220131101A - High frequency heat treatment machine capable of suppressing the occurrence of micro-cracks in vehicle parts - Google Patents

Abstract

An embodiment provides a high-frequency heat treatment apparatus capable of suppressing micro cracks in a vehicle component, which comprises: a main body; an induction coil unit installed in the main body and performing high-frequency heat treatment on an inner surface of a product to be treated; a cooling water supply unit supplying cooling water sprayed through the induction coil unit; a power supply unit providing power for high-frequency heat treatment; and a controller controlling a relative position between the product to be treated and the induction coil unit to heat and cool the product to be treated, wherein the induction coil unit includes a heating unit and a cooling unit, and a vertical distance between the heating unit and the cooling unit is adjusted based on a control command signal of the controller.

Description

High frequency heat treatment machine capable of suppressing the occurrence of micro-cracks in vehicle parts

The present invention relates to a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts. In detail, it relates to a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in the disk C/G outer race parts for vehicles.

Due to various regulations such as emission control and fuel economy regulation centering around the automobile industry, weight reduction, miniaturization, and high durability of parts are required. Most parts used in automobiles need to improve wear resistance and fatigue resistance on the surface as they continuously act while receiving high speed or high load. There are various methods such as carburizing, nitriding, high frequency surface hardening heat treatment, and coating using plasma to increase the abrasion resistance by increasing the surface hardness of the metal. In the case of chemical surface hardening such as carburizing or nitriding, the chemical composition of the surface layer changes and it becomes different from the parent body, and is a method to improve abrasion resistance and fatigue resistance. In the case of physical surface hardening such as high frequency surface hardening or flame hardening, Since the surface layer is changed from austenite structure to martensite structure by quenching, not only wear resistance but also fatigue resistance can be adjusted according to the required specifications. It has the biggest advantage of being able to control the depth of Therefore, high frequency surface hardening heat treatment has a wide range of applications and has strengths in price, production, and environmental issues, so it is widely used in the industry. In particular, a wide variety of parts such as drive shafts of automobile wheel parts, hub bearings, cam shafts of engine parts, gear sprockets, crankshafts, transmission parts, and steering parts are subjected to induction hardening.

High frequency heat treatment uses induction heating (IH) that uses high frequency power of about l to 200 kHz. Carburizing is a typical heat treatment method such as heat quenching and tempering, mainly for steel materials. Quenching and nitriding are used. The characteristics of the heating surface include ① 'rapid short-time heating' by resistance heating that directly flows current, ② 'surface heating' by the surface effect in which more current flows to the surface when the frequency increases, and ③ 'partial heating' using a heating coil. There is this. According to these characteristics, as 'hardening' in which the steel material is heated to the austenite (γ) phase and then quenched to harden due to martensite transformation ① high-frequency 'surface' quenching that hardens only the surface by rapidly cooling the surface after heating the part, ② High-frequency 'whole' quenching (continuously heating and tempering the whole in the same shape in the same shape) is performed after surface heating of the wire rod, allowing it to cool, heating the entirety to the center using heat transfer, and then quenching it to harden the cross section. is being used Induction heat treatment helps to increase the hardness of the surface of parts, increase the strength of steel wires and rods, and reduce the weight, size, and cost of parts. It is environmentally friendly and clean as it emits less CO2 than various surface heat treatments, and it is also attracting attention as a W-Eco (Ecological & Economical) heat treatment. As a result, it helps to improve fatigue strength and wear resistance of mechanical parts, so it is possible to significantly reduce the weight compared to parts that are not heat treated and can withstand the same load.

Republic of Korea Patent Publication No. 10-1806431 Republic of Korea Patent Publication No. 10-1736881

The embodiment provides an induction heat treatment machine capable of induction heat treatment of the inner surface of a processed product such as a disk C/G Outer Race automobile part.

The embodiment provides a device capable of high-quality induction heat treatment that lowers the rate of microcracks according to the heat treatment of Disk C/G Outer Race parts and reduces the possibility of tissue defects due to overheated tissue.

The embodiment provides a high frequency heat treatment machine capable of adjusting the heating delay time by adjusting the distance between the heating unit and the cooling unit.

The embodiment provides a high frequency heat treatment machine capable of improving the quality by preventing microcracks by performing high frequency heat treatment by precisely adjusting the positions of the treated product and the heating unit.

An embodiment includes a body; an induction coil unit installed on the main body to heat-treat the inner surface of the product by high frequency; a cooling water supply unit supplying cooling water sprayed through the induction coil unit; a power supply unit for providing power for high-frequency heat treatment; a controller for controlling the relative positions of the processed product and the induction coil unit for heating and cooling the processed product, wherein the induction coil unit includes a heating unit and a cooling unit, and the cooling unit responds to a control command signal of the controller It is possible to provide a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts whose vertical distance with the heating unit is controlled based on the heating unit.

In another aspect, the heating unit may include a high frequency input unit to which power is applied to one side, an induction coil generating an induced current on the inner surface of the processed product by the power, a connection unit connecting the other side of the high frequency input unit and the induction coil, and the It is possible to provide a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in a vehicle component including an induction coil mounting part in which at least a partial region of the connection part is accommodated and the induction coil is mounted.

In another aspect, the high-frequency input unit includes first and second high-frequency input units,

The connection part includes a first connection part connecting the first high frequency input part and the induction coil, and a second connection part connecting the second high frequency input part and the induction coil, and the heating part is between the first and second high frequency input parts. It is possible to provide a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts, which is located in and further includes an insulator for fixing the first and second high-frequency input units to each other.

In another aspect, the cooling unit may include a cooling water input unit installed along the connection unit, a cooling water output unit connected to the cooling water input unit and outputting the cooling water supplied through the cooling water input unit, and located below the induction coil mounting unit, and the cooling water and a height adjusting unit for adjusting the separation distance from the induction coil mounting unit by adjusting the vertical height of the input unit, wherein the controller adjusts the separation distance between the cooling water output unit and the induction coil mounting unit for the processed product. It is possible to provide a high frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts that control the cooling time and cooling rate.

In another aspect, it is possible to provide a high frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts, in which a plurality of coolant output holes are formed on the outer peripheral surface of the coolant output part to output coolant with a predetermined inclination downward.

In another aspect, a coil coolant input part is formed in the first high frequency input part, a coil coolant discharge part is formed in the second high frequency input part, and the coolant injected into the coil coolant input part is discharged through the inside of the induction coil. It is possible to provide a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts that cool the heated induction coil while being discharged to the unit.

In another aspect, a high frequency heat treatment capable of suppressing the occurrence of microcracks in vehicle parts further comprising a first transport system for adjusting the height of the processed product installed on the main body and a second transport system for adjusting the position of the induction coil unit equipment can be provided.

In another aspect, the first transport system includes a plate part whose vertical height is adjusted, is installed on the upper surface of the plate part to receive the processed product, and the height is adjusted in response to the vertical height adjustment of the plate part, and the processing is rotatable It is possible to provide a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts further including an article receiving part.

In another aspect, it is installed in the second transfer system, the processing product position alignment part for detecting the relative position of the processing product and the induction coil mounting portion to finely adjust the height of the processing product; It is possible to provide a high frequency heat treatment machine capable of suppressing crack occurrence.

In another aspect, the processed product position alignment unit, a first alignment unit installed in the second transport system to adjust the vertical height, is installed at the end of the first alignment unit to correspond to a partial area of the inner surface of the processed product It is possible to provide a high frequency heat treatment machine capable of suppressing the occurrence of microcracks in a vehicle component including a second alignment unit having a shape and a plurality of sensors installed in the second alignment unit to detect height information of the processed product.

In another aspect, first and second high-frequency input units provided with a power application socket on one side and positioned in parallel to each other; a first connection unit connected to the other side of the first high-frequency input unit and positioned perpendicular to the first high-frequency input unit; 2 A second connection part connected to the other side of the high frequency input part and positioned perpendicular to the second high frequency input part, an induction coil connected to the first and second connection parts, and the induction coil are mounted, and a partial region of the first and second connection parts The accommodated induction coil mounting unit is located along the first and second connection units and is located below the cooling water input unit and the induction coil mounting unit via the induction coil mounting unit and is connected to the cooling water input unit and supplied from the cooling water input unit. Including; an induction coil unit including a cooling water output unit for outputting the cooled cooling water, wherein the cooling water output unit is the induction coil unit in which the distance from the induction coil mounting unit is adjustable It is possible to provide a high frequency heat treatment machine capable of suppressing generation.

In another aspect, it is possible to provide a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in a vehicle component having a plurality of coolant output holes formed along an outer circumferential surface of the coolant output unit.

In another aspect, a cooling water input unit into which cooling water is input is provided at one side of the first high frequency input unit, and a cooling water discharge unit through which the cooling water input to the first high frequency input unit is discharged is provided at one side of the second high frequency input unit, and the cooling water input unit The coolant injected into the unit passes along the inside of the induction coil, and it is possible to provide a high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts that cool the induction coil.

The embodiment can provide a high-frequency heat treatment machine having an induction coil that can precisely heat-treat the inner surface of the Disk C/G Outer Race because the high-frequency heat treatment portion of the Disk C/G Outer Race is the inner surface of the Disk C/G Outer Race.

The embodiment may provide a high frequency heat treatment machine having an induction coil unit suitable for cooling in consideration of the shape of the inner surface of the Disk C/G Outer Race and the injection angle of heating and cooling water and the area of the cooling hole.

The embodiment may provide a high frequency heat treatment machine having an induction coil unit to adjust the distance between the heating unit and the cooling unit in order to adjust the heating delay time.

The embodiment can solve the problems of high frequency heat treatment of Disk C/G Outer Race such as cracks and overheated tissue generation, insufficient effective hardening layer depth, insufficient or excessive surface hardness, etc., and improve the quality of high frequency heat treatment of Disk C/G Outer Race. It is possible to provide a high-frequency heat treatment machine with

1 is a schematic diagram of a high frequency heat treatment machine according to an embodiment of the present invention.
Figure 2 depicts a portion of the processing product receiving portion, the processing product, and the induction coil portion.
3 to 5 show the operation process of the high frequency heat treatment machine in chronological order.
6 and 7 are schematic views of an induction coil unit.
8 is a schematic view for explaining the movement of the cooling unit of the induction coil unit.
9 shows before and after induction heat treatment of the treated article.
Figure 10 shows a crack inspection photograph of the treated article of the initial product, intermediate product, and final product subjected to induction heat treatment using an embodiment of the present invention.
11 shows a photomicrograph of the structure of a hardened layer optical microscope for the first product, the intermediate product, and the processed product of the final product.
12 and 13 depict a partial region of a high frequency heat treatment machine according to another embodiment of the present invention.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and a method for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms. In the following embodiments, terms such as first, second, etc. are used for the purpose of distinguishing one component from another, not in a limiting sense. Also, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as include or have means that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components will be added. In addition, in the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when described with reference to the drawings, the same or corresponding components are given the same reference numerals, and the overlapping description thereof will be omitted. .

1 is a schematic diagram of a high frequency heat treatment machine according to an embodiment of the present invention. And, Figure 2 depicts a portion of the processing product accommodating portion, the processing product, and the induction coil portion.

1 and 2 , the high frequency heat treatment unit 10 according to an embodiment of the present invention includes an induction coil unit 100 , a body 200 , a coolant supply unit 300 , a power supply unit 400 , and a controller 500 . ) may be included.

The induction coil unit 100 may generate an induced current by a high-frequency current on the inner surface of the treated article 20 to heat the surface layer of the treated article 20 .

According to the embodiment, the processed product 20 to be subjected to high frequency heat treatment may be a component mounted on the Disk C/G Outer Race for a vehicle disk C/G Joint. The disk C/G joint for vehicle is a joint used for the transmission of the front wheel drive shaft and the wheel or transmission of the rear wheel drive shaft. Disk C/G Joint for vehicle consists of Disk C/G Outer Race, Ball, Cage, and Inner Race, and the Disk C/G Outer Race converts the driving force received from the transmission into rolling motion on the Groove surface of the Outer Race to convert the driving force into Ball. , and performs the function of securing each operation.

The material of the Disk C/G Joint Outer Race is SAE 1050M, and its chemical composition may be as shown in Table 1, but is not limited thereto.

[Table 1]

The high frequency heat treatment part of the Disk C/G Outer Race becomes the inner surface of the Disk C/G Outer Race.

The induction coil unit 100 is installed inside the main body 200 so that it can vertically ascend or descend by a transport system.

The induction coil unit 100 may be adjusted to different heights according to heating and cooling of the processed product 20 .

The main body 200 may include a first transfer system 210 , an auxiliary cooling water supply unit 220 , a second transfer system 230 , and a processed product receiving unit 240 .

The first transport system 210 may include a base part 211 , a lifter 212 , and a plate part 213 .

The base part 211 is installed on the inner bottom surface of the main body 200 , the lifter 212 is installed on the upper end of the base part 211 , and the plate part 213 is installed on the upper end of the lifter 212 . can be The base unit 211 may adjust the height of the lifter 212 based on a control command signal from the controller 500 to adjust the height of the plate unit 213 installed in the lifter 212 from the ground.

The processed product accommodating part 240 is installed on the upper surface of the plate part 213 , and the height may be adjusted in response to the height adjustment of the plate part 213 .

A receiving hole for accommodating the processed product 20 may be configured in the processed product accommodating unit 240 , and may rotate at a predetermined speed based on a control command signal of the controller 500 .

The diameter of the receiving hole is formed to be larger than the diameter of the treated product 20 . In addition, the inner circumferential surface of the receiving hole may have a shape corresponding to the outer circumferential surface of the treated product 20 . Illustratively, the receiving hole also has a circular hole shape corresponding to the circular shape of the processed product 20 .

In a state in which the treated product 20 is inserted into the treated product accommodating unit 240 , at least a partial region of the induction coil unit 100 is inserted into the treated product 20 to rotate the inner circumferential surface of the treated product 20 . Induction heat treatment is possible.

The auxiliary cooling water supply unit 220 is installed inside the main body 200 , and may be provided as a pair installed on each of the left and right sides with respect to the front of the main body 200 , and is processed based on the control command signal of the controller 500 . Cooling water can be sprayed towards (20). The height of the auxiliary cooling water supply unit 220 may be adjusted in response to a vertical change in the vertical position of the treated product receiving unit 240 .

The second transfer system 230 is installed in the main body 200 , is connected to the induction coil unit 100 , and can adjust the height of the induction coil unit 100 . The second transfer system 230 may adjust the height of the induction coil unit 100 based on a control command signal of the controller 500 . In some embodiments, the height of the induction coil unit 100 is maintained, and the vertical distance between the induction coil unit 100 and the processing product 20 may be relatively adjusted according to the height adjustment of the plate unit 213 .

3 to 5 show the operation process of the high frequency heat treatment machine in chronological order.

Referring to FIG. 3 , the processed product accommodating part 240 and the induction coil part 100 may be spaced apart from each other by a predetermined vertical distance at the origin of the plate part 213 . When the plate part 213 is located at the origin, the user may insert the processed product 20 to be subjected to high frequency heat treatment into the processed product accommodating part 240 .

Referring to FIG. 4 , the height of the plate unit 213 is increased to the first position based on the control command signal of the controller 500, and accordingly, at least a partial area of the induction coil unit 100 is disposed in the processing product receiving unit ( It may be inserted into the treated article 20 located at 240 . The induction coil unit 100 may receive power from the power supply unit 400 to generate a high frequency wave and generate an induced current on the inner surface of the processed product 20 to heat the processed product 20 . That is, in a state in which the treated product 20 is positioned outside the induction coil of the induction coil unit 100 , the high frequency heat treatment can be performed for a certain period of time.

In addition, the frequency of the high frequency, the heating time, and the power density may be appropriately determined in consideration of the depth of the effective hardened layer and the current penetration depth of the treated product 20 .

Referring to FIG. 5 , after heating the processed product 20 , the plate unit 213 descends based on a control command signal from the controller 500 to become a second position, and the processed product receiving unit 240 and the induction coil unit (100) may be spaced apart by a predetermined vertical distance. In addition, the induction coil unit 100 may rapidly cool the inner surface of the treated product 20 heated by spraying the cooling water supplied from the cooling water supply unit 300 in a downward direction. In some embodiments, the auxiliary cooling water supply unit 220 may spray the cooling water supplied from the cooling water supply unit 300 to the treated product 20 based on a control command signal of the controller 500 . After the cooling of the processed product 20 is completed, as shown in FIG. 3 , the plate part 213 moves to the origin position and the user withdraws the processed product 20 on which the induction heat treatment has been completed from the processed product accommodating part 240 . can do.

In some embodiments, after heating the treated article 20 , the descending distance and the descending speed of the plate portion 213 may be adjusted according to the cooling rate and the cooling time. In addition, the descending distance and the descending speed may be appropriately determined in consideration of the type of the treated product 20 , the quality of the high frequency heat treatment, and the size and height of the induction coil in the induction coil unit 100 .

6 and 7 are schematic views of an induction coil unit. And, FIG. 8 is a schematic diagram for explaining the movement of the cooling unit of the induction coil unit.

6 to 8 , the induction coil unit 100 , which is a component of the high frequency heat treatment unit 10 according to an embodiment of the present invention, may include a heating unit 110 and a cooling unit 120 . .

The heating unit 110 generates inductive power to the processed product 20 based on the received power to heat the processed product 20 , and the cooling unit 120 sprays cooling water to the heated processed product 20 . The processed product 20 is cooled.

The heating unit 110 may include a high frequency input unit 111 , a connection unit 112 , an induction coil 113 , and an induction coil mounting unit 114 .

The high frequency input unit 111 may include a first high frequency input unit 111a and a second high frequency input unit 111b.

The first high frequency input unit 111a and the second high frequency input unit 11b may have a horizontal bar type shape and may be positioned parallel to each other. An insulator 150 may be positioned between the first high frequency input unit 111a and the second high frequency input unit 111b. That is, the first high frequency input unit 111a and the second high frequency input unit 111b may be fixed to each other with the insulator 150 interposed therebetween.

A power application socket 111c may be provided at one end of each of the first high frequency input unit 111a and the second high frequency input unit 11b. The AC signal supplied from the power supply unit 400 may be applied to each of the power application socket 111c of the first high frequency input unit 111a and the power application socket 111c of the second high frequency input unit 11b.

In some embodiments, a coil cooling water input unit 141 may be provided on one end side of the first high frequency input unit 111a, and a coil cooling water discharge unit 142 may be provided on one end side surface of the second high frequency input unit 11b. . The cooling water supplied from the cooling water supply unit 300 may be supplied through the coil cooling water input unit 141 and discharged to the coil cooling water discharge unit 142 through the inside of the induction coil to cool the heated induction coil.

A connection unit 112 may be connected to the other end of the high frequency input unit 111 . The connection unit 112 may be positioned perpendicular to the high frequency input unit 111 . In detail, the first connection unit 112a may be connected to the other end of the first high frequency input unit 111a, and the second connection unit 112b may be connected to the other end of the second high frequency input unit 11b. In addition, the first and second connecting portions 112a and 112b may be positioned parallel to each other.

The induction coil 113 may be connected to the first and second connecting portions 112a and 112b. Accordingly, the high frequency input through the first and second high frequency input units 111a and 111b may be applied to the induction coil 113 through the first and second connection units 112a and 112b.

The induction coil 113 may be mounted on the induction coil mounting unit 114 . The induction coil mounting unit 114 may have a cylindrical shape. The induction coil mounting unit 114 may serve to concentrate heat. In addition, the induction coil 113 may be installed to surround the outer circumferential surface of the induction coil mounting unit 114 , and at least a portion of the induction coil 113 may extend to a predetermined depth from the outer surface of the induction coil mounting unit 114 . can be mounted.

In addition, one side of the connection unit 112 may be connected to the high frequency input unit 111 , and the other side may be connected to the inside of the induction coil mounting unit 114 , and a partial region of the connection unit 112 is the induction coil mounting unit 114 . It can be inserted into the inner hole.

The cooling unit 120 may include a cooling water input unit 121 , a height adjustment unit 122 , and a cooling water output unit 123 .

The cooling water input unit 121 may be installed along the connection unit 112 and may be connected to the cooling water output unit 123 located below the induction coil mounting unit 114 via the inside of the induction coil mounting unit 114 .

A coolant input hole 121h is formed in the coolant input unit 121 , and the coolant supplied through the coolant input hole 121h moves along the coolant input part 121 to be output through the coolant output part 123 . have.

In addition, the concentration of the cooling water, the temperature of the cooling water, and the output pressure of the cooling water may be adjusted in order to prevent cracking of the heating part of the treated product 20 .

The cooling water output unit 123 may have a cylindrical shape, and a plurality of cooling water output holes 123h through which cooling water is output may be formed on an outer peripheral surface thereof.

The plurality of cooling water output holes 123h are formed as holes having a predetermined inclination, so that the cooling water may be sprayed downward with a predetermined inclination.

The induction coil unit 100 may further include a support rod 130 positioned to surround the coolant input unit 121 and connected to the induction coil mounting unit 114 to fix the induction coil mounting unit 114 .

The height adjustment unit 122 may be installed on the support rod 130 and may be coupled to the other end of the high frequency input unit 111 to fix the high frequency input unit 111 . In addition, the height adjustment unit 122 may adjust the height of the coolant input unit 121 located along the inner side of the support rod 130 .

The height adjusting unit 122 adjusts the height of the cooling water input unit 121 based on the control command signal of the controller 500 , and accordingly adjusts the height of the cooling water output unit 123 connected to the cooling water input unit 121 . can The separation distance from the induction coil mounting unit 114 may be adjusted according to the height adjustment of the cooling water output unit 123 . The heating delay time can be adjusted accordingly.

9 shows before and after induction heat treatment of the treated article. 10 shows a crack inspection photograph of the treated product of the initial product, the medium product, and the final product subjected to induction heat treatment using an embodiment of the present invention, and FIG. represent the picture.

Crack inspection was performed on the induction heat-treated article 20 according to FIG. 9 and the structure of the hardened layer optical microscope was observed. Referring to FIG. 10 , it can be confirmed that cracks do not occur in all of the initial, intermediate, and final products, which were subjected to crack inspection by fluorescence magnetic particle inspection after induction heat treatment of the treated product 20 . In addition, referring to FIG. 11 , it can be seen that, as a result of tissue observation under an optical microscope, the structure of the treated product 20 of the first product, the intermediate product, and the final product is a fine martensite structure.

12 and 13 depict a partial region of a high frequency heat treatment machine according to another embodiment of the present invention.

12 and 13 , the high frequency heat treatment machine 10 according to another embodiment of the present invention may further include a processed product position alignment unit 600 .

The processed product position alignment unit 600 may include a first alignment unit 610 and a second alignment unit 620 . The first alignment unit 610 may be installed in the second transport system 230 to move up and down in a vertical direction. A second alignment unit 620 may be installed at a lower end of the first alignment unit 610 . The second alignment part 620 may have a predetermined curvature to correspond to a shape of an inner region of the processed product 20 . A plurality of sensors 630 may be provided on the front surface of the second alignment unit 620 .

As shown in FIG. 9 , for the high-frequency heat treatment of the processed product 20 , the plate part 213 is operated so that at least a partial region of the induction coil mounting part 114 is inserted into the processed product 20 as it rises. can In addition, while the first aligning unit 610 moves downward, the second aligning unit 620 is positioned between the inner side of the processed product 20 and the outer side of the induction coil mounting unit 114 . In addition, the controller 500 may collect sensing results of the plurality of sensors 630 installed on the front portion of the second alignment unit 620 .

The plurality of sensors 630 may be installed along the longitudinal direction of the second alignment unit 620 .

In some embodiments, the plurality of sensors 630 may be distance sensors, and based on a distance value detected from each of the plurality of sensors 630 , a distance between the processing product 20 and the induction coil mounting unit 114 is used. The relative position can be detected.

The controller 500 controls the relative position with the induction coil mounting unit 114 according to the downward movement of the first alignment unit 610 and the height information of the processed product 20 according to the sensing results of the plurality of sensors 630 . By finely adjusting the height of the plate portion 213 based on the

Also, the first alignment unit 610 may include a vertical moving unit 611 , a horizontal fixing unit 612 , and a driving unit 613 . The horizontal fixing unit 612 may be positioned in a direction parallel to the ground from the second transport system 230 and connected to the vertical moving unit 611 . A driving unit 613 may be installed at a connection point between the vertical moving unit 611 and the horizontal fixing unit 612 . The driving unit 613 may move up and down of the vertical moving unit 611 . After fine-adjusting the height of the processed product 20 , the driving unit 613 may raise the vertical moving unit 611 to a predetermined distance in order to prevent damage to the sensor 630 due to heating of the processed product 20 . have.

The embodiments according to the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present invention, or may be known and used by those skilled in the art of computer software. Examples of the computer-readable recording medium include hard disks, magnetic media such as floppy disks and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and magneto-optical media such as floppy disks. medium), and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. A hardware device may be converted into one or more software modules to perform processing in accordance with the present invention, and vice versa.

The specific implementations described in the present invention are only examples, and do not limit the scope of the present invention in any way. For brevity of the specification, descriptions of conventional electronic components, control systems, software, and other functional aspects of the systems may be omitted. In addition, the connections or connecting members of the lines between the components shown in the drawings exemplify functional connections and/or physical or circuit connections, and in an actual device, various functional connections, physical connections that are replaceable or additional may be referred to as connections, or circuit connections. In addition, unless there is a specific reference such as “essential” or “importantly”, it may not be a necessary component for the application of the present invention.

In addition, although the detailed description of the present invention has been described with reference to a preferred embodiment of the present invention, those skilled in the art or those having ordinary knowledge in the art will appreciate the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

Induction Heat Treatment Machine(10)
induction coil unit (100)
heating unit 110
High frequency input unit (111)
first high frequency input unit 111a
second high-frequency input unit 111b
Power application socket (111c)
Connection (112)
first connection part (112a)
second connection part (112b)
Induction Coil(113)
Induction coil mounting unit (114)
cooling unit 120
Cooling water input unit (121)
Cooling water input hole (121h)
height adjustment unit (122)
Cooling water output unit (123)
Cooling water output hole (123h)
support rod (130)
body (200)
first conveying system 210
Auxiliary coolant supply unit 220
Second conveying system 230
Processed product storage unit (240)
Cooling water supply unit (300)
Power supply unit (400)
Controller (500)

Claims (13)

main body;
an induction coil unit installed on the main body to heat-treat the inner surface of the product by high frequency;
a cooling water supply unit supplying cooling water sprayed through the induction coil unit;
a power supply unit for providing power for high-frequency heat treatment;
A controller for controlling the relative positions of the treated article and the induction coil unit for heating and cooling the treated article;
The induction coil unit includes a heating unit and a cooling unit,
The cooling unit has a vertical distance to the heating unit is adjusted based on a control command signal of the controller.
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. The method of claim 1,
The heating unit,
A high-frequency input unit to which power is applied to one side, an induction coil generating an induced current on the inner surface of the processed product by the power, a connection unit connecting the other side of the high-frequency input unit and the induction coil, and at least a partial region of the connection unit are accommodated, Including an induction coil mounting unit on which the induction coil is mounted
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 3. The method of claim 2,
The high-frequency input unit includes first and second high-frequency input units,
The connection unit includes a first connection unit connecting the first high frequency input unit and the induction coil, and a second connection unit connecting the second high frequency input unit and the induction coil;
The heating unit is positioned between the first and second high-frequency input units and further includes an insulator for fixing the first and second high-frequency input units to each other.
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 4. The method of claim 3,
The cooling unit,
The connection unit is connected to the cooling water input unit, the cooling water input unit, outputs the cooling water supplied through the cooling water input unit, and adjusts the vertical height of the cooling water output unit and the cooling water input unit located below the induction coil mounting unit. Including a height adjustment unit for adjusting the separation distance from the induction coil mounting unit,
The controller adjusts the separation distance between the cooling water output unit and the induction coil mounting unit to adjust the cooling time and cooling rate for the treated product
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 5. The method of claim 4,
A plurality of cooling water output holes are formed on the outer peripheral surface of the cooling water output unit to output the cooling water with a predetermined inclination downward.
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 4. The method of claim 3,
A coil cooling water input unit is formed in the first high frequency input unit, and a coil cooling water discharge unit is formed at the second high frequency input unit,
The cooling water input to the coil cooling water input unit is discharged to the coil cooling water discharge unit through the inside of the induction coil to cool the heated induction coil.
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 3. The method of claim 2,
Further comprising a first transport system for adjusting the height of the processed product installed in the main body and a second transport system for adjusting the position of the induction coil unit
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 8. The method of claim 7,
The first transport system includes a plate part whose vertical height is adjusted,
It is installed on the upper surface of the plate part to accommodate the processed product, the height is adjusted in response to the vertical height adjustment of the plate part, and further comprising a rotatable processed product receiving part
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 8. The method of claim 7,
and a processed product position aligning unit installed in the second transfer system and configured to finely adjust the height of the processed product by detecting the relative position of the processed product and the induction coil mounting unit.
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 10. The method of claim 9,
The processed product position alignment unit may include a first alignment unit installed in the second transport system to adjust vertical height, and a first alignment unit installed at an end of the first alignment unit and having a shape corresponding to a partial region of the inner surface of the processed product. 2 A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in vehicle parts including a plurality of sensors installed in the second alignment unit and the second alignment unit to detect height information of the processed product. First and second high-frequency input units provided with a power application socket on one side and positioned parallel to each other, a first connection unit connected to the other side of the first high-frequency input unit and positioned perpendicular to the first high-frequency input unit, the other side of the second high-frequency input unit a second connection part connected to and positioned perpendicular to the second high frequency input part, an induction coil connected to the first and second connection parts, and an induction coil in which the induction coil is mounted, and a partial region of the first and second connection parts is accommodated a mounting unit, located along the first and second connecting units, via the induction coil mounting unit, located below the cooling water input unit and the induction coil mounting unit, and connected to the cooling water input unit to output the cooling water supplied from the cooling water input unit Including the induction coil unit including the cooling water output unit;
The cooling water output unit is capable of adjusting the separation distance from the induction coil mounting unit
The induction coil unit performs high-frequency heat treatment on the inner surface of the treated product.
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 12. The method of claim 11,
A plurality of cooling water output holes are formed along the outer peripheral surface of the cooling water output unit.
A high-frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts. 13. The method of claim 12,
A cooling water input unit into which cooling water is input is provided on one side of the first high frequency input unit,
A cooling water discharge unit from which the cooling water input to the first high frequency input unit is discharged is provided at one side of the second high frequency input unit;
The cooling water injected into the cooling water input unit passes along the inside of the induction coil and cools the induction coil.
High frequency heat treatment machine capable of suppressing the occurrence of microcracks in automotive parts.

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