KR20130089398A - Roller hemming method adopting partial heating - Google Patents

Roller hemming method adopting partial heating Download PDF

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KR20130089398A
KR20130089398A KR1020120010725A KR20120010725A KR20130089398A KR 20130089398 A KR20130089398 A KR 20130089398A KR 1020120010725 A KR1020120010725 A KR 1020120010725A KR 20120010725 A KR20120010725 A KR 20120010725A KR 20130089398 A KR20130089398 A KR 20130089398A
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South Korea
Prior art keywords
heating
roller
hemming
outer plate
point
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KR1020120010725A
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Korean (ko)
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KR101371311B1 (en
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김동옥
유용문
한범석
노상호
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자동차부품연구원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/043—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • B21D39/023—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors using rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: A roller hemming method applied with local heating is provided to implement a plastic working with applying heat, thereby preventing a defect due to a crack or a fracture. CONSTITUTION: A roller hemming method applied with local heating includes: a step of mounting a heating unit on a body identical to a hemming roller; and a step of applying the heat of the heating unit on a heating point (15) on an outer plate housing the peripheral part of an inner plate, bending the outer plate, and then coupling the outer plate and the inner plate. The heating unit is a laser gun (30) having a direction controller (32) and a light intensity controller (34). The laser gun detects the temperature of the heating point through a thermometer (36) in real time.

Description

국부 가열을 적용한 롤러헤밍 방법{Roller hemming method adopting partial heating}Roller hemming method adopting partial heating

본 발명은 국부 가열을 적용한 롤러헤밍 방법에 관한 것으로서, 보다 구체적으로는 마그네슘 합금과 같은 난성형성 판재의 플랜지부에 한정하여 열을 작용하면서 소성가공을 수행하여 균열이나 파단에 의한 불량을 방지하는 국부 가열을 적용한 롤러헤밍 방법에 관한 것이다.The present invention relates to a roller hemming method to which local heating is applied. More specifically, the present invention relates to a roller hemming method, and more specifically, to prevent defects due to cracking or breaking by performing plastic processing while applying heat to a flange portion of a refractory plate such as magnesium alloy. It relates to a roller hemming method applying local heating.

일반적으로 자동차 도어, 후드, 트렁크 리드 등의 판넬 부품을 제조하는 현장에서 내판을 외판에 얹고 외판의 플랜지를 펀치로 밀어 눌러 접어 내판과 외판을 결합하는 헤밍 가공을 적용한다. 초기에는 주로 프레스 헤밍 공법이 적용되었으나, 근래에는 로봇에 의한 유연한 롤러헤밍 공법이 선호되고 있다. 롤러헤밍은 로봇에 장착된 롤러가 적게는 2스텝 많게는 3스텝의 단계를 거치면서 판재의 소성가공을 수행하는 방식이다. 이와 관련되는 선행특허로서 한국 공개특허공보 제2009-0040008호의 "롤러 헤밍 장치", 한국 등록특허공보 제0641329호의 "롤러형 헤밍장치" 등이 알려져 있다.In general, hemming is applied to the inner plate and the outer plate by placing the inner plate on the outer plate and pressing the flange of the outer plate with a punch at the site where panel parts such as automobile doors, hoods and trunk lids are manufactured. Initially, the press hemming method was mainly applied, but recently, the flexible roller hemming method by a robot is preferred. Roller hemming is a method in which the rollers mounted on the robot perform the plastic processing of the plate while passing the steps of at least two steps to three steps. As related patents, "roller hemming device" of Korean Patent Laid-Open Publication No. 2009-0040008, and "roller-type hemming device" of Korean Patent Publication No. 0641329 are known.

한국 공개특허공보 제2009-0040008호는 다관절 로봇의 아암 선단에 회전유닛이 부착되고, 상기 회전유닛의 하부에는 가압 실린더가 구성되며, 상기 가압 실린더의 작동로드 선단에는 예비 헤밍롤러와 메인 헤밍롤러를 장착하여 구성되는 롤러 헤밍 장치에 있어서, 상기 회전유닛의 일측에 연장 형성되는 프레임을 통하여 장착되어 상기 헤밍 가공을 위한 인너 패널의 일측에 대하여 가압볼이 실린더 구동에 의해 예비 헤밍롤러보다 먼저 가압 지지하면서 지나도록 하는 보조 가압수단을 포함하는 구성을 제안한다. 이에 따라, 클램핑 유닛을 배제하여 조작 상의 불편함을 덜고, 생산성 저하 및 안전사고의 위험 요인을 제거하는 효과를 기대한다.Korean Patent Laid-Open Publication No. 2009-0040008 discloses a rotating unit attached to an arm end of an articulated robot, and a lower portion of the rotating unit includes a pressurized cylinder, and a preliminary hemming roller and a main hemming roller at the front end of the actuating rod. In the roller hemming device is configured to mount the, is mounted through a frame extending to one side of the rotating unit is pressed against the side of the inner panel for the hemming process by pressing the ball prior to the preliminary hemming roller by the cylinder drive It proposes a configuration including an auxiliary pressing means for passing through. Accordingly, by eliminating the clamping unit, it is expected to reduce the inconvenience of operation, and to eliminate the risk factors of productivity degradation and safety accidents.

한국 등록특허공보 제0641329호는 구동원에 의하여 상하 및 좌우방향으로 이동가능한 헤밍장치로써; 프레임에 고정되는 복수개의 유압실린더와; 상기 유압실린더에 의하여 상하 이동 가능하고, 패널의 헤밍을 수행하기 위한 복수개의 헤밍롤러와; 패널의 헤밍시, 상기 각각의 헤밍롤러와 근접하게 되는 복수개의 가이드롤러; 그리고 상기 가이드롤러를 수평방향으로 전후 이동시키기 위한 복수개의 유압실린더를 포함하여 구성된다. 이에 따라, 비교적 간단한 장치로 구현됨과 동시에 부분적인 헤밍을 신뢰도 높게 수행할 수 있는 장점을 기대한다.Korean Patent Publication No. 0641329 is a hemming device which is movable up and down and left and right by a drive source; A plurality of hydraulic cylinders fixed to the frame; A plurality of hemming rollers which are movable up and down by the hydraulic cylinder, for hemming the panel; A plurality of guide rollers which come into close proximity to the respective hemming rollers when the panel is hemmed; And a plurality of hydraulic cylinders for moving the guide roller back and forth in the horizontal direction. Accordingly, the present invention is expected to be implemented with a relatively simple device and to perform a partial hemming with high reliability.

상기한 선행특허에 의하면 유연한 생산시스템을 기반으로 초기 설비투자비를 감소하고 애프터 마켓 및 프로토타입 차량 제작에 유용성을 보일 여지는 있으나, 초경량소재인 마그네슘 합금의 경우 헤밍과정에서 절곡부에 손상이 발생하여 제품의 불량과 생산성 저하를 초래하는 폐단이 있다.According to the above patent, it is possible to reduce the initial capital investment based on the flexible production system and show usefulness in the aftermarket and prototype vehicle manufacturing. However, in the case of the ultra-light magnesium alloy, the bending part is damaged during the hemming process. There are closures that lead to product defects and reduced productivity.

상기와 같은 종래의 문제점들을 개선하기 위한 본 발명의 목적은, 마그네슘 합금과 같은 난성형성 판재의 플랜지부에 한정하여 열을 작용하면서 소성가공을 수행하여 균열이나 파단에 의한 불량을 방지하는 국부 가열을 적용한 롤러헤밍 방법을 제공하는 데 있다.An object of the present invention for improving the conventional problems as described above, local heating to prevent the defects caused by cracking or breaking by performing plastic working while applying heat to the flange portion of the refractory forming plate such as magnesium alloy It is to provide a roller hemming method applied.

상기 목적을 달성하기 위하여, 본 발명은 경량의 내부판재와 외부판재를 헤밍롤러 상에서 가압하여 결합하는 제조방법에 있어서: 상기 헤밍롤러와 동일한 몸체 상에 가열수단을 탑재하고, 상기 내부판재의 변부를 수용하는 외부판재의 가열점 상으로 가열수단의 열을 작용하면서 헤밍롤러로 절곡하여 결합하는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a manufacturing method for pressing the light weight inner plate and the outer plate on the hemming roller to combine: mounting a heating means on the same body as the hemming roller, the edge portion of the inner plate It is characterized in that it is bent and combined with the hemming roller while acting on the heating point of the heating plate of the outer plate to accommodate.

또, 본 발명에 따르면 상기 가열수단은 방향조절기와 광량조절기를 지닌 레이저 건인 것을 특징으로 한다.In addition, according to the present invention, the heating means is characterized in that the laser gun having a direction controller and a light amount regulator.

이때, 상기 레이저 건은 온도측정기를 통하여 가열점의 온도를 실시간으로 검출하는 것을 특징으로 한다.At this time, the laser gun is characterized in that it detects the temperature of the heating point in real time through a temperature meter.

또, 본 발명에 따르면 상기 가열수단은 외부판재의 절곡되는 내외측면 중에서 외측으로 가열점을 형성하며 연화하는 것을 특징으로 한다.In addition, according to the present invention, the heating means is characterized in that the softening by forming a heating point to the outside of the inner and outer sides of the outer plate bent.

이때, 상기 가열수단의 가열점은 헤밍롤러와 외부판재의 접촉점에서 1~5㎜ 선행한 영역에 형성되는 것을 특징으로 한다.At this time, the heating point of the heating means is characterized in that it is formed in the region 1 to 5 mm preceding the contact point of the hemming roller and the outer plate.

이상과 같이 본 발명에 의하면, 마그네슘 합금과 같은 난성형성 판재의 플랜지부에 한정하여 열을 작용하면서 소성가공을 수행하여 균열이나 파단에 의한 불량을 방지하는 효과가 있다.As described above, according to the present invention, there is an effect of preventing the defect due to cracking or breaking by performing plastic working while applying heat to the flange portion of the refractory forming plate such as magnesium alloy.

도 1은 본 발명에 따른 방법을 구현하는 개념을 나타내는 개략구성도
도 2는 본 발명에 따른 방법에 의한 헤밍 가공을 나타내는 도식도1 is a schematic diagram illustrating a concept of implementing a method according to the present invention
2 is a schematic diagram showing hemming by the method according to the invention.

이하, 첨부된 도면에 의거하여 본 발명의 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 난성형성을 지닌 경량의 내부판재(11)와 외부판재(12)를 헤밍롤러(20) 상에서 가압하여 결합하는 제조방법에 관련된다. 난성형성의 경량 소재는 자동차 분야에 있어서 저연비화를 실현하기 위한 필수적인 사항으로서 마그네슘 합금, 알루미늄 합금, 티탄ㆍ티탄합금 등을 포함할 수 있으며 이에 한정하지 않는다. 다만, 비금속성인 플라스틱, 수지기반의 복합재료 등은 제외한다. 내부판재(11)와 외부판재(12)는 헤밍롤러(20)에 의하여 변부(플랜지)에서 상호 겹친 상태로 결합되면서 자동차 도어, 후드, 트렁크 리드와 같은 하나의 부품으로 완성된다.The present invention relates to a manufacturing method of pressing by pressing on the hemming roller 20 on the light inner plate 11 and the outer plate 12 having a hard formation. The refractory lightweight material may include, but is not limited to, magnesium alloys, aluminum alloys, titanium-titanium alloys, etc. as essential items for realizing low fuel consumption in the automobile field. However, non-metallic plastics, resin-based composite materials, etc. are excluded. The inner plate 11 and the outer plate 12 are combined in the overlapping state at the edge (flange) by the hemming roller 20 is completed in one component, such as car door, hood, trunk lid.

본 발명에 따르면 상기 헤밍롤러(20)와 동일한 몸체 상에 가열수단을 탑재하는 것을 특징으로 한다. 가열수단은 난성형성을 지닌 경량 판재에 열을 제공하여 연화하는 것으로서 열변형이나 소성가공의 결함을 최소화하면서 신속하고 정확한 헤밍 가공을 수행한다. 가열수단이 헤밍롤러(20)와 동일한 몸체(로봇)에 탑재되어야 내부판재(11)와 외부판재(12)의 변부를 따라 헤밍롤러(20)를 이동하며 작업하는 과정에서 상대적 운동이 적어 온도제어의 신뢰성이 향상된다. According to the present invention is characterized in that the heating means is mounted on the same body as the hemming roller 20. The heating means softens by providing heat to the lightweight plate having difficulty forming, and performs fast and accurate hemming processing while minimizing defects of heat deformation and plastic processing. The heating means must be mounted on the same body (robot) as the hemming roller 20 so that the relative motion is less during the process of moving the hemming roller 20 along the edges of the inner plate 11 and the outer plate 12 so that the temperature is controlled. The reliability of the is improved.

이때, 상기 가열수단은 방향조절기(32)와 광량조절기(34)를 지닌 레이저 건(30)을 사용하는 것이 바람직하다. 레이저 건(30)의 레이버빔은 외부판재(12)의 종류와 무관하게 높은 에너지 강도를 구현하여 국부적으로 급속한 온도상승을 유발한다. 방향조절기(32)는 레이저 건(30)의 레이저빔이 조사되는 방향을 다축으로 조절하고, 광량조절기(34)는 소재의 종류와 두께에 따라 레이저 건(30)에서 조사되는 레이저빔의 양을 가변한다. 레이저 건(30)이 헤밍롤러(20)와 동일한 몸체에 탑재되더라도 방향조절기(32)에 의하여 조사 자세를 변동할 수 있다.At this time, it is preferable that the heating means uses a laser gun 30 having a direction controller 32 and a light amount controller 34. The laser beam of the laser gun 30 implements a high energy intensity irrespective of the type of the outer plate 12 to cause a local rapid temperature rise. The direction controller 32 adjusts the direction in which the laser beam of the laser gun 30 is irradiated in multiple axes, and the light amount controller 34 adjusts the amount of the laser beam irradiated from the laser gun 30 according to the type and thickness of the material. Variable. Even if the laser gun 30 is mounted on the same body as the hemming roller 20, the irradiation position may be changed by the direction controller 32.

한편, 상기 레이저 건(30)은 온도측정기(36)를 통하여 가열점(15)의 온도를 실시간으로 검출하는 것이 좋다. 레이저 건(30)의 레이저빔은 대부분 판재로 흡수되지만 반사되는 일부의 파장을 측정하여 온도를 검출한다. 이와 같이 온도측정기(36)를 사용하면 광량조절기(34)와 연계하여 가열점(15)의 온도조절을 신속하고 정확하게 수행할 수 있다.Meanwhile, the laser gun 30 may detect the temperature of the heating point 15 in real time through the temperature measuring device 36. Most of the laser beam of the laser gun 30 is absorbed by the plate, but the temperature is detected by measuring a part of the wavelength reflected. By using the temperature measuring device 36 as described above, temperature control of the heating point 15 can be performed quickly and accurately in connection with the light amount controller 34.

물론, 가열수단으로서 레이저 건(30) 외에 고주파 유도가열, 가스가열 등 다른 수단을 독립적/병용적으로 사용하는 것도 무방하다.Of course, other means, such as high frequency induction heating and gas heating, other than the laser gun 30 may be used independently or in combination as the heating means.

그리고, 투입되는 외부판재(12)의 신속한 가열이나 고른 온도분포의 유지를 위여 별도의 예열 공정을 부가할 수도 있다.In addition, a separate preheating step may be added for rapid heating of the external plate 12 to be introduced or for maintaining an even temperature distribution.

또, 본 발명에 따르면 상기 내부판재(11)의 변부를 수용하는 외부판재(12)의 가열점(15) 상으로 가열수단의 열을 작용하면서 헤밍롤러(20)로 절곡하여 결합하는 것을 특징으로 한다. 가열수단으로서 레이저 건(30)을 사용하는 경우 가열점(15)의 형성이 용이하다. 내부판재(11)와 외부판재(12)의 변부(플랜지)를 겹치는 과정에서 가열점(15)에 의한 연화와 헤밍롤러(20)에 의한 가압이 복합적으로 작용하여 소성변형에 의한 결합이 수행된다.In addition, according to the present invention is characterized in that it is bent and combined with the hemming roller 20 while acting the heat of the heating means on the heating point 15 of the outer plate 12 receiving the edge portion of the inner plate (11). do. When the laser gun 30 is used as the heating means, the formation of the heating point 15 is easy. In the process of overlapping the edges (flanges) of the inner plate 11 and the outer plate 12, softening by the heating point 15 and pressurization by the hemming roller 20 act in combination to perform the combination by plastic deformation. .

이때, 상기 가열수단은 외부판재(12)의 절곡되는 내외측면 중에서 외측으로 가열점(15)을 형성하며 연화하는 것이 바람직하다. 통상적으로 외부판재(12)는 앵글처럼 직각으로 절곡된 구조로 투입되며, 절곡되는 내측면에 내부판재(11)가 수용된다. 내부판재(11)가 수용되는 반대측인 외측으로 가열점(15)을 형성하는 것이 작업성은 물론 품질에도 유리하게 작용한다.At this time, the heating means is preferably softened by forming the heating point 15 to the outside of the inner and outer side surface of the bent of the outer plate (12). Typically, the outer plate 12 is put into a structure bent at a right angle like an angle, the inner plate 11 is accommodated in the inner surface is bent. Forming the heating point 15 to the outside on the opposite side where the inner plate 11 is accommodated advantageously works as well as quality.

한편, 상기 가열수단의 가열점(15)은 헤밍롤러(20)와 외부판재(12)의 접촉점에서 1~5㎜ 선행한 영역에 형성되는 것이 좋다. 헤밍롤러(20)와 레이저 건(30)이 동일한 로봇(도시 생략)의 몸체에 탑재되어 엔빌(도시 생략) 위에 겹쳐진 판재(11)(12)의 플랜지를 이동한다. 헤밍롤러(20)가 외부판재(12)에 접촉하여 가압하기 시작하는 접촉점에서 적절한 거리로 이격된 위치에 가열점(15)을 형성하여 레이저빔을 조사한다.On the other hand, the heating point 15 of the heating means is preferably formed in the region 1 to 5 mm preceding the contact point of the hemming roller 20 and the outer plate 12. The hemming roller 20 and the laser gun 30 are mounted on the body of the same robot (not shown) to move the flanges of the plate members 11 and 12 superimposed on the anvil (not shown). The heating point 15 is formed at a position spaced apart from the contact point at which the heming roller 20 contacts and pressurizes the outer plate 12 to irradiate the laser beam.

가열점(15)이 헤밍롤러(20)와 외부판재(12)의 접촉점에 너무 근접(1㎜ 이하)하거나 너무 이격되면(5㎜ 이상) 적절한 연화온도에 이르지 못하므로 외부판재(12)의 절곡과정에서 균열이나 파단에 의한 불량이 발생한다.If the heating point 15 is too close (1 mm or less) or too far (5 mm or more) to the contact point of the hemming roller 20 and the outer plate 12, the bending of the outer plate 12 will not be achieved. In the process, defects due to cracking or breaking occur.

본 발명은 기재된 실시예에 한정되는 것은 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서 그러한 변형예 또는 수정예들은 본 발명의 특허청구범위에 속한다 해야 할 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

11: 내부판재 12: 외부판재
15: 가열점 20: 헤밍롤러
30: 레이저 건 32: 방향조절기
34: 광량조절기 36: 온도측정기11: inner plate 12: outer plate
15: heating point 20: heming roller
30: laser gun 32: direction controller
34: Light Volume Controller 36: Temperature Meter

Claims (5)

경량의 내부판재(11)와 외부판재(12)를 헤밍롤러(20) 상에서 가압하여 결합하는 제조방법에 있어서:
상기 헤밍롤러(20)와 동일한 몸체 상에 가열수단을 탑재하고,
상기 내부판재(11)의 변부를 수용하는 외부판재(12)의 가열점(15) 상으로 가열수단의 열을 작용하면서 헤밍롤러(20)로 절곡하여 결합하는 것을 특징으로 하는 국부 가열을 적용한 롤러헤밍 방법.In the manufacturing method of pressing the light weight inner plate 11 and outer plate 12 on the hemming roller 20 to combine:
Mounting the heating means on the same body as the hemming roller 20,
Roller applied to the local heating, characterized in that bent by the hemming roller 20 while engaging the heat of the heating means on the heating point 15 of the outer plate member 12 receiving the edge of the inner plate member 11 Heming method. 제1항에 있어서,
상기 가열수단은 방향조절기(32)와 광량조절기(34)를 지닌 레이저 건(30)인 것을 특징으로 하는 국부 가열을 적용한 롤러헤밍 방법.The method of claim 1,
And said heating means is a laser gun (30) having a direction controller (32) and a light quantity controller (34). 제2항에 있어서,
상기 레이저 건(30)은 온도측정기(36)를 통하여 가열점(15)의 온도를 실시간으로 검출하는 것을 특징으로 하는 국부 가열을 적용한 롤러헤밍 방법.The method of claim 2,
Wherein the laser gun (30) detects the temperature of the heating point (15) in real time through a temperature measuring device (36). 제1항에 있어서,
상기 가열수단은 외부판재(12)의 절곡되는 내외측면 중에서 외측으로 가열점(15)을 형성하며 연화하는 것을 특징으로 하는 국부 가열을 적용한 롤러헤밍 방법.The method of claim 1,
The heating means is a roller hemming method to which the local heating is applied, characterized in that to form a heating point (15) to the outside of the inner and outer sides of the bending of the outer plate member (12). 제4항에 있어서,
상기 가열수단의 가열점(15)은 헤밍롤러(20)와 외부판재(12)의 접촉점에서 1~5㎜ 선행한 영역에 형성되는 것을 특징으로 하는 국부 가열을 적용한 롤러헤밍 방법.5. The method of claim 4,
The heating point (15) of the heating means is a roller hemming method applied to the local heating, characterized in that formed in the region 1 to 5 mm preceding the contact point of the hemming roller (20) and the outer plate member (12).
KR1020120010725A 2012-02-02 2012-02-02 Roller hemming method adopting partial heating KR101371311B1 (en)

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