KR20070053380A - Structure and method for joining of aluminum wheel - Google Patents

Structure and method for joining of aluminum wheel Download PDF

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Publication number
KR20070053380A
KR20070053380A KR1020050111092A KR20050111092A KR20070053380A KR 20070053380 A KR20070053380 A KR 20070053380A KR 1020050111092 A KR1020050111092 A KR 1020050111092A KR 20050111092 A KR20050111092 A KR 20050111092A KR 20070053380 A KR20070053380 A KR 20070053380A
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South Korea
Prior art keywords
wheel
aluminum
joining
spokes
wheel rim
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KR1020050111092A
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Korean (ko)
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고영진
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현대자동차주식회사
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Priority to KR1020050111092A priority Critical patent/KR20070053380A/en
Publication of KR20070053380A publication Critical patent/KR20070053380A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B1/00—Spoked wheels; Spokes thereof
    • B60B1/06—Wheels with compression spokes
    • B60B1/08—Wheels with compression spokes formed by casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B1/00—Spoked wheels; Spokes thereof
    • B60B1/06—Wheels with compression spokes
    • B60B1/14—Attaching spokes to rim or hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2310/00—Manufacturing methods
    • B60B2310/20—Shaping
    • B60B2310/202—Shaping by casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2310/00—Manufacturing methods
    • B60B2310/30—Manufacturing methods joining
    • B60B2310/302—Manufacturing methods joining by welding
    • B60B2310/3025—Manufacturing methods joining by welding by thermal welding, e.g. friction, induction or ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2360/00—Materials; Physical forms thereof
    • B60B2360/10—Metallic materials
    • B60B2360/104—Aluminum

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

본 발명은 알루미늄 휠의 접합구조 및 방법에 관한 것으로서, 더욱 상세하게는 기존 휠의 스포크 및 림부를 접합하는 MIG 용접 공정 대신에, 스포크의 형상을 휠림접합부 까지 일체형으로 주조하고, 휠림접합부와 휠림의 접합을 마찰용접함으로써, 용접공정의 단축 및 품질의 균일성을 향상시킬 수 있도록 한 알루미늄 휠의 접합구조 및 방법에 관한 것이다.The present invention relates to a joining structure and method of an aluminum wheel, and more specifically, instead of the MIG welding process for joining the spokes and rims of the existing wheels, the shape of the spokes are integrally cast up to the wheel rim joint, and the wheel rim joint and the wheel rim The present invention relates to a joining structure and method of an aluminum wheel, which is capable of shortening the welding process and improving uniformity of quality by friction welding the joining.

이를 위해, 본 발명은 허브, 스포크 및 휠림접합부가 일체로 형성된 휠 본체를 저압주조에 의해 성형하는 단계와; 휠림을 스피닝에 의해 가공하는 단계와; 상기 휠 본체와 휠림을 마찰용접에 의해 접합하는 단계; 를 포함하여 이루어지는 것을 특징으로 하는 알루미늄 휠의 접합구조 및 방법을 제공한다.To this end, the present invention comprises the steps of molding the wheel body, the hub, the spokes and the wheel rim joint integrally formed by low pressure casting; Machining the wheel rims by spinning; Bonding the wheel body and the wheel rim by friction welding; It provides a bonding structure and method of an aluminum wheel comprising a.

알루미늄 휠, 스포크, 휠림접합부, 저압주조, 스피닝, 마찰용접 Aluminum wheel, spokes, wheel rim joints, low pressure casting, spinning, friction welding

Description

알루미늄 휠의 접합구조 및 방법{Structure and method for joining of aluminum wheel}Structure and method for joining aluminum wheel

도 1은 종래기술에 따른 일체형 알루미늄 휠의 제조방법을 나타내는 개략도.1 is a schematic view showing a method of manufacturing an integrated aluminum wheel according to the prior art.

도 2a 내지 도 2d는 종래기술에 따른 휠림의 제조공정 및 휠림과 스포크의 접합을 나타내는 것으로서, 도 2a는 컵 단조에 의한 성형방법, 도 2b는 플로우 포밍에 의한 성형방법, 도 2c 스피닝에 의한 성형방법, 도 2d는 MIG 용접에 의한 휠림과 스포크의 접합을 나타내는 이미지.2a to 2d shows the manufacturing process of the wheel rim according to the prior art and the bonding of the wheel rim and the spoke, Figure 2a is a molding method by cup forging, Figure 2b is a molding method by flow forming, Figure 2c molding by spinning Method, FIG. 2D is an image showing the joining of the wheel rim and spokes by MIG welding.

도 3은 종래기술에 따른 알루미늄 휠의 구성을 나타내는 장치구성도.Figure 3 is a device configuration showing the configuration of the aluminum wheel according to the prior art.

도 4는 일반적인 MIG 용접에 따른 접합부위를 나타내는 이미지.Figure 4 is an image showing a joint according to the general MIG welding.

도 5는 본 발명에 따른 알루미늄 휠의 구성을 나타내는 장치구성도.5 is a device configuration diagram showing the configuration of the aluminum wheel according to the present invention.

도 6은 본 발명에 따른 마찰용접에 의한 접합부위를 나타내는 이미지.Figure 6 is an image showing a joint by friction welding in accordance with the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 휠 본체 10a : 허브10: wheel body 10a: hub

10b : 스포크 10c : 휠림접합부10b: spoke 10c: wheel rim joint

12 : 버(burr)12 burr

본 발명은 알루미늄 휠의 접합구조 및 방법에 관한 것으로서, 더욱 상세하게는 기존 휠의 스포크 및 림부를 접합하는 MIG 용접 공정 대신에, 스포크의 형상을 휠림접합부 까지 일체형으로 주조하고, 휠림접합부와 휠림의 접합을 마찰용접함으로써, 용접공정의 단축 및 품질의 균일성을 향상시킬 수 있도록 한 알루미늄 휠의 접합구조 및 방법에 관한 것이다.The present invention relates to a joining structure and method of an aluminum wheel, and more specifically, instead of the MIG welding process for joining the spokes and rims of the existing wheels, the shape of the spokes are integrally cast up to the wheel rim joint, and the wheel rim joint and the wheel rim The present invention relates to a joining structure and method of an aluminum wheel, which is capable of shortening the welding process and improving uniformity of quality by friction welding the joining.

종래의 알루미늄 휠은 도 1에 도시한 바와 같이 보온로(103)에 담겨져 있는 알루미늄 용탕(104) 표면에 가스압을 작용시켜 튜브(105)를 통하여 용탕(104)이 올라가며 휠 공간을 채우게 되는데, 용탕(104)의 충진 순서는 허브(102)쪽을 먼저 채우고 스포크(100) 그리고 맨 나중에 림부(101)를 채우게 된다. Conventional aluminum wheels as shown in Figure 1 by applying a gas pressure to the surface of the aluminum molten metal 104 contained in the thermal furnace 103, the molten metal 104 is raised through the tube 105 to fill the wheel space, the molten metal The filling sequence of 104 will fill the hub 102 first and then the spoke 100 and the rim 101 later.

이와 같은 주조방법에 의하여 일체형 알루미늄 휠이 제조되게 되며, 제조원가가 비교적 저렴하여 전세계적으로 널리 적용되고 있는 일반적인 주조공정이다.The integrated aluminum wheel is manufactured by the casting method as described above, and the manufacturing cost is relatively low, which is a general casting process widely applied worldwide.

그러나, 상기 일체형 주조휠은 긴 용탕의 이동통로(허브→스포크→림)로 인하여 최종 용탕 충진부인 림(Rim)부위에 미성형현상인 탕경(Cold Shot)등이 발생되지 않도록 스포크부위 및 스포크와 림부가 만나는 부위인 아우터 림(Outer Rim)부를 두껍게 하여 충분한 용탕이 공급되도록 금형설계시 고려하게 된다.However, the integrated casting wheel has a spoke part and spoke so that an unmolded phenomenon such as a cold shot does not occur in the rim part of the final melt filling part due to the moving path of the molten metal (hub → spoke → rim). The outer rim, which is the part where the rim meets, is thickened to consider the mold design to supply sufficient molten metal.

따라서, 금형이 가열되고 냉각속도에 대한 불리함으로 작용되어 응고시 생기는 금속의 조직(DENDRITE)인 DAS(DENDRIITE ARM SPACE)가 미세하지 못해 기계적 물 성 즉, 인장강도, 신율 및 피로강도가 떨어지게 되는 문제점이 있다. Therefore, the DAS (DENDRIITE ARM SPACE), which is a metal structure (Dendriite) that occurs when the mold is heated and acts as a disadvantage to the cooling rate, is not fine, resulting in a drop in mechanical properties, that is, tensile strength, elongation and fatigue strength. There is this.

상기와 같은 문제점으로 인해 결국 휠을 더욱 가볍게 하는 경량화 설계를 실현하는데 한계가 있다.Due to the above problems, there is a limit in realizing a lightweight design that makes the wheel even lighter.

상기 경량화 설계의 한계를 극복하기 위한 방법으로 최근에는 스포크가 저압주조에 의해 성형되고, 림부는 소성가공 공정의 하나인 스피닝(SPINNING)공정(도 2b 참조) 혹은 플로우 포밍(FLOW FORMING)(도 2c 참조)으로 각각 제조한 후, 상기 스포크와 림부를 MIG 용접으로 접합(도 2d 참조)하고 있다.As a method for overcoming the limitation of the lightweight design, the spokes are recently formed by low pressure casting, and the rim is a spinning process (see FIG. 2B) or flow forming (FIG. 2C), which is one of plastic processing processes. The spokes and the rims are then joined by MIG welding (see FIG. 2D).

그러나, 상기 용접에 따른 공정이 복잡하고 용접품질에 대한 검사가 까다로워 제조원가 상승이 불가피한 실정이다.However, the manufacturing process is inevitably increased due to the complexity of the welding process and the inspection of the welding quality.

상기 복잡한 공정에 따른 제조원가 상승이 휠의 경량화에 걸림돌로 작용함으로써, 적용이 확대되는데 한계가 있다. The increase in manufacturing cost according to the complex process acts as an obstacle to the weight reduction of the wheel, and thus, there is a limit to expanding the application.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 기존 휠의 스포크 및 림부를 접합하는 MIG 용접 공정 대신에, 스포크의 형상을 휠림접합부 까지 일체형으로 주조하고, 휠림접합부와 휠림의 접합을 마찰용접함으로써, 용접공정의 단축 및 품질의 균일성을 향상시킬 수 있도록 한 알루미늄 휠의 접합구조 및 방법을 제공하는데 그 목적이 있다.The present invention has been made in view of the above, and instead of the MIG welding process for joining the spokes and rims of the existing wheel, casting the shape of the spokes integrally to the wheel rim joint, and friction welding the wheel rim joint and the wheel rim joint It is therefore an object of the present invention to provide a joining structure and method of an aluminum wheel, which can shorten the welding process and improve the uniformity of quality.

상기한 목적을 달성하기 위한 본 발명은 알루미늄 휠의 접합구조에 있어서,The present invention for achieving the above object in the bonding structure of the aluminum wheel,

허브, 스포크 및 휠림접합부가 일체로 형성된 휠 본체와, 상기 휠 본체의 외경면에 대향되는 방향으로 개방되도록 휠 본체의 외곽부에 배치된 휠림을 접합하는 것을 특징으로 한다.The hub body, the spokes and the wheel rim joint portion is integrally formed, and the wheel rim disposed on the outer portion of the wheel body to be opened so as to open in a direction opposite to the outer diameter surface of the wheel body.

바람직한 구현예로서, 상기 휠 본체는:In a preferred embodiment, the wheel body is:

휠의 중앙부에 형성된 허브와; 상기 허브에서 반경방향으로 연장형성된 다수개의 스포크와; 상기 스포크에서 원주방향을 따라 형성된 휠림접합부와; 을 포함하여 구성된 것을 특징으로 한다.A hub formed at the center of the wheel; A plurality of spokes extending radially from the hub; A wheel rim joint formed along the circumferential direction of the spoke; Characterized in that configured to include.

더욱 바람직한 구현예로서, 상기 스포크는 상기 허브에서 등간격으로 연장형성되는 것을 특징으로 한다.In a more preferred embodiment, the spokes are characterized by extending at equal intervals in the hub.

또한, 상기 돌기부는 바깥쪽으로 갈수록 단면적이 커지는 것을 특징으로 한다.In addition, the protrusion is characterized in that the cross-sectional area is larger toward the outside.

또한, 상기 휠 본체는 저압주조에 의해 일체로 형성되는 것을 특징으로 한다.In addition, the wheel body is characterized in that formed integrally by low pressure casting.

또한, 상기 휠림은 스피닝에 의해 제조되는 것을 특징으로 한다.In addition, the wheel rim is characterized in that it is manufactured by spinning.

또한, 상기 휠 본체의 휠림접합부와 휠림의 접합은 마찰용접에 의해 이루어지는 것을 특징으로 한다.In addition, the wheel rim joint of the wheel body and the wheel rim is characterized in that the friction is made by welding.

또한, 알루미늄 휠의 접합방법에 있어서,In addition, in the joining method of the aluminum wheel,

허브, 스포크 및 휠림접합부가 일체로 형성된 휠 본체를 저압주조에 의해 성형하는 단계와; 휠림을 스피닝에 의해 가공하는 단계와; 상기 휠 본체와 휠림을 마찰용접에 의해 접합하는 단계; 를 포함하여 이루어지는 것을 특징으로 한다.Molding the wheel body in which the hub, the spokes and the wheel rim joint are integrally formed by low pressure casting; Machining the wheel rims by spinning; Bonding the wheel body and the wheel rim by friction welding; Characterized in that comprises a.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부한 도 3은 종래기술에 따른 알루미늄 휠의 구성을 나타내는 장치구성도이고, 도 5는 본 발명에 따른 알루미늄 휠의 구성을 나타내는 장치구성도이다.3 is a device configuration diagram showing the configuration of the aluminum wheel according to the prior art, Figure 5 is a device configuration diagram showing the configuration of the aluminum wheel according to the present invention.

본 발명은 알루미늄의 휠을 구성하는 휠 본체(10)와 휠림(11)의 접합구조 및 접합방법에 관한 것이다.The present invention relates to a joining structure and a joining method of the wheel body 10 and the wheel rim 11 constituting the wheel of aluminum.

본 발명은 고속회전에 의한 마찰용접에 의해 휠 본체(10) 및 휠림(11)을 접합함으로써, 기존의 MIG 용접과 같은 용융용접에 비하여 생산성을 향상시키도록 한 점에 주안점이 있다.The present invention focuses on improving productivity compared to melt welding such as conventional MIG welding by joining the wheel body 10 and the wheel rim 11 by friction welding by high speed rotation.

기존의 공정은 도 3에 도시한 바와 같이 스포크(100)와 림부(101)의 두부분으로 구성되어 있다.The existing process is composed of two parts, the spoke 100 and the rim 101 as shown in FIG.

좌측 그림은 휠의 전면에서 바라본 그림으로서, 휠 중앙의 허브(102)와, 이 허브(102)에서 반경방향으로 일체로 형성된 스포크(100)와, 이 스포크(100)에 수직방향으로 배치된 아우터 림부(101a)로 구성되어 있다.The left view is a view from the front of the wheel, the hub 102 in the center of the wheel, the spoke 100 formed integrally in the radial direction at the hub 102, and the outer disposed in the vertical direction to the spoke 100 It is comprised by the rim 101a.

상기 휠 중앙부에 형성된 허브(102) 및 다수개의 스포크(100)와, 스포크(100)에 수직방향으로 배치된 아우터 림부(101a)는 저압주조에 의해 제작되게 된다.The hub 102 and the plurality of spokes 100 formed in the center portion of the wheel and the outer rim portion 101a disposed in the vertical direction to the spokes 100 are manufactured by low pressure casting.

한편, 우측 그림은 휠 단면에 대한 측면 그림으로서, 상기 다수개의 스포크(100)는 중앙의 허브(102)에서 반경방향으로 형성되고, 이 스포크(100)가 우측의 원형 림부(101) 내경과 일정한 간격을 유지하도록 가공한 후 6개의 스포크(100)를 용접하게 된다.On the other hand, the right picture is a side view of the wheel cross-section, the plurality of spokes 100 are formed in the radial direction at the center hub 102, the spokes 100 is constant with the inner diameter of the right circular rim 101 Six spokes 100 are welded after processing to maintain the spacing.

현재의 상용화 기술인 도 3에서는 일체로 형성된 허브(102) 및 스포크(100)(1개의 부품)와, 일체로 형성된 아우터 림부(101a) 및 이너 림부(101b)(1개의 부품)의 2개 부품으로 구성되어 있다.In the current commercialization technology of FIG. 3, the hub 102 and the spoke 100 (one part) formed integrally with two parts, the outer rim portion 101a and the inner rim portion 101b (one part) formed integrally Consists of.

그러나, 본 발명은 도 5에 도시한 바와 같이 허브(10a), 스포크(10b) 및 휠림접합부(10c)(종래의 아우터 림부에 해당)로 구성된 휠 본체(10)(1부품)를 도 3과 달리 휠림접합부(10c)까지 저압주조 공법에 의해 일체로 성형한 후 용접부위의 면을 가공한 다음(가공부 "A")에 스포크(10b)를 고속(300~1500rpm)으로 회전시켜 휠림(11)과 마찰용접을 실시하게 된다.However, the present invention shows a wheel body 10 (one part) composed of a hub 10a, a spoke 10b and a wheel rim joint 10c (corresponding to a conventional outer rim) as shown in FIG. Alternatively, after forming integrally by the low pressure casting method up to the wheel rim joint 10c, the surface of the welded part is processed (processing part "A"), and then the spoke 10b is rotated at a high speed (300 to 1500 rpm) for the wheel rim 11 ) And friction welding.

즉, 본 발명은 허브(10a), 스포크(10b) 및 휠림접합부(10c)로 구성된 휠 본체(10)와, 휠 본체}(10)에 접합되는 휠림(11)으로 구성된다.That is, the present invention is composed of a wheel body 10 composed of a hub 10a, a spoke 10b, and a wheel rim joining portion 10c, and a wheel rim 11 bonded to the wheel main body 10.

보다 상세하게는, 상기 허브(10a)는 원형으로 휠의 중심부에 위치하고, 스포크(10b)는 허브(10a)에서 반경방향으로 연장형성되되, 다수개의 돌기부(10b')가 등간격으로 형성되어 있다. 이때, 상기 돌기부(10b')는 반경방향으로 갈수록 단면적이 커지게 형성된다.In more detail, the hub 10a is circularly positioned at the center of the wheel, and the spokes 10b extend radially from the hub 10a, and the plurality of protrusions 10b 'are formed at equal intervals. . At this time, the protrusion 10b 'is formed to have a larger cross-sectional area toward the radial direction.

상기 휠림접합부(10c)는 종래의 아우터 림부에 해당되는 것으로 돌기부(10b')의 끝단부가 원주방향을 따라 다수개의 돌기부(10b')를 연결하여 일체로 형성되고, 휠림(11)에 접합하기 위하여 돌기부(10b')의 후단방향으로 수직하게 돌출형성되어 있다. 이때, 휠림접합부(10c)의 후단부는 고속회전에 의한 마찰용접을 위해 면가공되어 있다.The wheel rim joint 10c corresponds to a conventional outer rim, and an end portion of the protrusion 10b 'is integrally formed by connecting a plurality of protrusions 10b' along the circumferential direction, and is joined to the wheel rim 11. It protrudes perpendicularly to the rear end direction of the projection part 10b '. At this time, the rear end of the wheel rim joint 10c is surface-treated for friction welding by high speed rotation.

이와 같은 구성에 의한 본 발명에 따른 알루미늄 휠의 접합방법을 설명하면 다음과 같다.Referring to the bonding method of the aluminum wheel according to the present invention by such a configuration as follows.

1) 상기 허브(10a), 스포크(10b) 및 휠림접합부(10c)를 1개의 부품으로 저압주조에 의해 일체로 성형한다. 1) The hub 10a, the spoke 10b and the wheel rim joint 10c are integrally formed by low pressure casting into one component.

2) 상기 휠림(11)은 스피닝 공법에 의해 속이 빈 원통형으로 가공한다.2) The wheel rim 11 is processed into a hollow cylinder by the spinning method.

3) 휠림(11)의 일단부를 휠림접합부(10c)의 후단부에 마찰용접으로 접합한다.3) One end of the wheel rim 11 is joined to the rear end of the wheel rim joint 10c by friction welding.

따라서, 본 발명에 따른 마찰용접 공정의 적용으로 품질의 균일성과 생산속도가 기존의 MIG용접보다는 훨씬 빠르며 열변형 측면에 있어서도 유리한 장점이 있다.Therefore, the uniformity of the quality and the production speed are much faster than the conventional MIG welding by the application of the friction welding process according to the present invention and there is an advantage in terms of thermal deformation.

도 4는 일반적인 MIG 용접에 따른 접합부위를 나타내는 이미지이고, 도 6은 본 발명에 따른 마찰용접에 의한 접합부위를 나타내는 이미지이다.4 is an image showing a joint portion according to the general MIG welding, Figure 6 is an image showing a joint portion by friction welding according to the present invention.

상기 마찰용접 후 휠의 내외부는 전체적으로 가공을 하게 되어 있기 때문에, 도 6에 도시한 바와 같이 밀려나온 버(12)(BURR;잉여 소재)들을 가공으로 제거 할 수 있다. Since the inside and the outside of the wheel are processed as a whole after the friction welding, the burrs 12 (BURR; surplus material) pushed out as shown in FIG. 6 can be removed by processing.

따라서, 본 발명에 따라 제조된 알루미늄 휠의 치수나 열처리 후 소재의 강도는 그대로 손실없이 유지가 가능하지만, 기존의 용접소재는 접합의 두 소재가 상이하여 용접 전에 각각 소재별로 열처리를 실시한 후 용접을 하고 있으며, MIG용접은 다시 소재를 용융시켜 두가지의 상이한 소재를 붙이는 공정으로 이때 적용된 용융열은 열처리를 풀리게 하여 용접부위의 기계적 강도를 떨어뜨리는 역할을 하게 된다.Therefore, the dimensions of the aluminum wheel manufactured according to the present invention and the strength of the material after heat treatment can be maintained as it is without loss, but the conventional welding material is different from the two materials of the joint is welded after each heat treatment for each material before welding In addition, MIG welding melts the material again and attaches two different materials. The molten heat applied at this time causes the heat treatment to be released to lower the mechanical strength of the welded part.

그러나, 마찰 용접은 MIG용접과 달리 높은 온도까지 올라가지 않기 때문에 열에 의한 영향이 상대적으로 낮아서 기계적강도의 희생은 거의 발생하지 않으며, 용융용접이 아닌 소성변형 접합이기 때문에 용접시 용접부위에 발생되는 기공 등과 같은 용접결함의 문제도 발생되지 않는다.However, unlike MIG welding, friction welding does not rise to a high temperature, so the effect of heat is relatively low, so that almost no sacrifice of mechanical strength occurs, and because it is a plastic deformation joint instead of melt welding, such as pores generated during welding There is no problem of weld defects.

이상에서 본 바와 같이, 본 발명에 따른 알루미늄 휠의 접합구조 및 방법에 의하면, 고속회전에 의한 마찰용접 공정을 도입함으로써, MIG 용접과 같은 용융용접에 비하여 생산성을 향상시킬 수 있고, 접합공정 적용시 MIG 용접의 용융되는 온도 이하에서 아주 짧은 시간(3-7초)내에 접합됨으로써, 기계적강도의 저하 및 용접부위의 결함 등의 발생이 최소화 되고, 알루미늄 휠의 경량화 및 원가상승분을 최소화 할 수 있다.As described above, according to the joining structure and method of the aluminum wheel according to the present invention, by introducing a friction welding process by high-speed rotation, it is possible to improve the productivity compared to melt welding such as MIG welding, when applying the joining process By joining in a very short time (3-7 seconds) below the melting temperature of the MIG welding, it is possible to minimize the decrease in mechanical strength and defects in the welded portion, and to minimize the weight reduction and cost increase of the aluminum wheel.

Claims (8)

알루미늄 휠의 접합구조에 있어서,In the joining structure of the aluminum wheel, 허브, 스포크 및 휠림접합부가 일체로 형성된 휠 본체와, 상기 휠 본체의 외경면에 대향되는 방향으로 개방되도록 휠 본체의 외곽부에 배치된 휠림을 접합하는 것을 특징으로 하는 알루미늄 휠의 접합구조.Joining structure of the aluminum wheel, characterized in that for joining the wheel body formed integrally with the hub, spokes and wheel rim joint portion and the wheel rim disposed on the outer portion of the wheel body so as to open in a direction opposite to the outer diameter surface of the wheel body. 청구항 1에 있어서, 상기 휠 본체는:The wheel body of claim 1 wherein the wheel body is: 휠의 중앙부에 형성된 허브와;A hub formed at the center of the wheel; 상기 허브에서 반경방향으로 연장형성된 다수개의 스포크와;A plurality of spokes extending radially from the hub; 상기 스포크에서 원주방향을 따라 형성된 휠림접합부와;A wheel rim joint formed along the circumferential direction of the spoke; 을 포함하여 구성된 것을 특징으로 하는 알루미늄 휠의 접합구조.Bonding structure of the aluminum wheel, characterized in that configured to include. 청구항 2에 있어서, 상기 스포크는 상기 허브에서 등간격으로 연장형성되는 것을 특징으로 하는 알루미늄 휠의 접합구조.The joining structure of an aluminum wheel according to claim 2, wherein the spokes extend at equal intervals from the hub. 청구항 3에 있어서, 상기 스포크는 바깥쪽으로 갈수록 단면적이 커지는 것을 특징으로 하는 알루미늄 휠의 접합구조.The joining structure of aluminum wheels according to claim 3, wherein the spokes have a larger cross-sectional area toward the outside thereof. 청구항 1 또는 청구항 2에 있어서, 상기 휠 본체는 저압주조에 의해 일체로 형성되는 것을 특징으로 하는 알루미늄 휠의 접합구조.The joining structure of an aluminum wheel according to claim 1 or 2, wherein the wheel body is integrally formed by low pressure casting. 청구항 1 또는 청구항 2에 있어서, 상기 휠림은 스피닝에 의해 제조되는 것을 특징으로 하는 알루미늄 휠의 접합구조.The joining structure of an aluminum wheel according to claim 1 or 2, wherein the wheel rim is manufactured by spinning. 청구항 1 또는 청구항 2에 있어서, 상기 휠 본체의 휠림접합부와 휠림의 접합은 마찰용접에 의해 이루어지는 것을 특징으로 하는 알루미늄 휠의 접합구조.The joining structure of an aluminum wheel according to claim 1 or 2, wherein the joining of the wheel rim joining portion of the wheel body and the wheel rim is made by friction welding. 알루미늄 휠의 접합방법에 있어서,In the joining method of the aluminum wheel, 허브, 스포크 및 휠림접합부가 일체로 형성된 휠 본체를 저압주조에 의해 성형하는 단계와;Molding the wheel body in which the hub, the spokes and the wheel rim joint are integrally formed by low pressure casting; 휠림을 스피닝에 의해 가공하는 단계와;Machining the wheel rims by spinning; 상기 휠 본체와 휠림을 마찰용접에 의해 접합하는 단계;Bonding the wheel body and the wheel rim by friction welding; 를 포함하여 이루어지는 것을 특징으로 하는 알루미늄 휠의 접합방법.Bonding method of the aluminum wheel, characterized in that comprises a.
KR1020050111092A 2005-11-21 2005-11-21 Structure and method for joining of aluminum wheel KR20070053380A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017026628A1 (en) * 2015-08-10 2017-02-16 핸즈코퍼레이션 주식회사 Hubless one-piece wheel and manufacturing method therefor
KR101709052B1 (en) 2015-08-18 2017-02-22 핸즈코퍼레이션주식회사 The friction stir welding device for joining the wheel
KR101717116B1 (en) * 2015-11-05 2017-03-16 핸즈코퍼레이션주식회사 The wheel with a rim of the honeycomb type
KR20180070307A (en) * 2016-12-16 2018-06-26 주식회사 포스코 Magnesium rim for 2-piece road wheel, and method for manufacturing the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017026628A1 (en) * 2015-08-10 2017-02-16 핸즈코퍼레이션 주식회사 Hubless one-piece wheel and manufacturing method therefor
US10913307B2 (en) 2015-08-10 2021-02-09 Hands Corporation Ltd. Hubless one-piece wheel and manufacturing method therefor
KR101709052B1 (en) 2015-08-18 2017-02-22 핸즈코퍼레이션주식회사 The friction stir welding device for joining the wheel
KR101717116B1 (en) * 2015-11-05 2017-03-16 핸즈코퍼레이션주식회사 The wheel with a rim of the honeycomb type
WO2017078233A1 (en) * 2015-11-05 2017-05-11 핸즈코퍼레이션 주식회사 Honeycomb rim-type wheel
US10632786B2 (en) 2015-11-05 2020-04-28 Hands Corporation Ltd. Honeycomb rim-type wheel
KR20180070307A (en) * 2016-12-16 2018-06-26 주식회사 포스코 Magnesium rim for 2-piece road wheel, and method for manufacturing the same

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