KR20210158498A - Manufacturing Method Of Towing Hook And Towing Hook Produced Thereby - Google Patents

Manufacturing Method Of Towing Hook And Towing Hook Produced Thereby Download PDF

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KR20210158498A
KR20210158498A KR1020200076871A KR20200076871A KR20210158498A KR 20210158498 A KR20210158498 A KR 20210158498A KR 1020200076871 A KR1020200076871 A KR 1020200076871A KR 20200076871 A KR20200076871 A KR 20200076871A KR 20210158498 A KR20210158498 A KR 20210158498A
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South Korea
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ring
manufacturing
round bar
turning
present
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KR1020200076871A
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Korean (ko)
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KR102372957B1 (en
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박성학
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주식회사 에스앤티메탈
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

A method of manufacturing a traction ring of the present invention comprises the steps of: preparing a round bar; cutting the round bar to a predetermined length; turning a threaded part and a tapered or stepped connection part; threading the threaded part by turning or rolling; forming a ring part at one end opposite to the threaded part of the round bar by hot forging; cooling the ring part; and trimming the hot forged ring part, thereby capable of processing the shape of the connection part in various and beautiful ways.

Description

견인고리 제작방법 및 이에 의해 제작된 견인고리 {Manufacturing Method Of Towing Hook And Towing Hook Produced Thereby}Towing hook manufacturing method and towing hook produced thereby {Manufacturing Method Of Towing Hook And Towing Hook Produced Thereby}

본 발명은 견인고리 제작방법 및 이에 의해 제작된 견인고리에 관한 것으로, 보다 상세하게는 견인고리의 나사부 중심축이 어긋나 있지 않고 그 외관에 대한 설계 자유도를 높이고 미려하게 제작할 수 있는 견인고리 제작방법 및 이에 의해 제작된 견인고리에 관한 것이다. The present invention relates to a method for manufacturing a traction ring and a traction ring manufactured thereby, and more particularly, to a method for manufacturing a traction ring that does not deviate from the central axis of the threaded portion of the traction ring, increases the degree of freedom in designing its appearance, and can be manufactured beautifully; It relates to the tow hook produced thereby.

자동차는 운행 중 도로상에서 고장이 발생되거나, 악천후시 비포장 도로에서 바퀴가 웅덩이에 빠져 자력으로 빠져 나올 수 없게 되면 다른 자동차에 의해 견인되게 된다. 이와 같은 경우를 대비해서 자동차의 전방과 후방에는 견인 로프를 체결하기 위한 견인고리가 구비된다.A car is towed by another car if a breakdown occurs on the road while driving, or if the wheel falls into a puddle on an unpaved road and cannot get out by itself during bad weather. In preparation for such a case, a towing ring for fastening a towing rope is provided at the front and rear of the vehicle.

견인고리는 자동차의 바디에 고정되어 있는 고정식 견인고리와 필요시에만 체결되고 평상시에는 분리되어 있는 분리식 견인고리로 구분된다. The tow hook is divided into a fixed tow hook fixed to the body of the vehicle and a detachable tow hook that is fastened only when necessary and is usually separated.

본 발명은 자동차의 바디에서 분리되어 보관되는 분리식 견인고리를 제작하는 방법에 관한 것이다. 견인고리는 도 1,2과 같이 범퍼(10)내로 삽입되어, 자동차의 내측 바디에 구비된 브래킷(20)에 체결되어 사용된다. 필요시에만 사용되는 견인고리(100)는 자동차의 외관에 영향을 주지 않으므로 근래 들어 사용이 증가하고 있다.The present invention relates to a method of manufacturing a detachable tow hook stored separately from the body of a vehicle. The tow hook is inserted into the bumper 10 as shown in FIGS. 1 and 2 and is used by being fastened to the bracket 20 provided on the inner body of the vehicle. The tow hook 100, which is used only when necessary, is increasing in use in recent years because it does not affect the appearance of the vehicle.

견인고리는 도 3과와 같이 고리부(110), 나사부(120), 연장부(130)로 이루어진다. 통상 사용되는 견인고리는 도 5에 도시된 형태를 그 예로 들 수 있다. The traction ring consists of a ring portion 110 , a screw portion 120 , and an extension portion 130 as shown in FIG. 3 . A commonly used traction hook may have the form shown in FIG. 5 as an example.

도 5(a)와 같은 견인고리는 금속소재를 냉간단조에 의해 환봉 형태로 1차 가공한 후 고리부를 열단단조하여 제작하게 되는데, 이때 냉간단조된 환봉에 나사를 정밀하게 가공하기가 어려운 문제점이 있다.The traction ring as shown in Figure 5 (a) is produced by first processing a metal material into a round bar shape by cold forging, and then hot forging the ring part. have.

최근에는 중량 감소를 위해 도 5(b)(c)와 같이 연결부가 테이퍼지거나 단차진 형태의 견인고리가 선호되고 있다. 이와 같은 견인고리는 나사 가공을 제외한 전체 형상을 열간단조에 의해 성형하고, 이후 나사부를 가공하게 된다. Recently, for weight reduction, as shown in Fig. 5(b)(c), a tow hook having a tapered connection part or a stepped shape is preferred. Such a traction ring is formed by hot forging in its entire shape except for screw processing, and then the threaded portion is processed.

상기와 같은 제작방법에 의하면 나사부를 가공하기 위해서는, 나사부의 선삭을 실시하고 전조를 하게 되는데, 열간 단조에 의해 성형된 제품의 경우 선삭이나 전조를 위한 중심축을 설정하기가 매우 곤란하여 나사부의 중심축이 연결부의 중심축과 어긋나게 되고, 이에 따라 차량의 브라켓에 끼워넣기가 매우 곤란하게 되는 문제점이 있었다. According to the manufacturing method as described above, in order to process the threaded part, the threaded part is turned and rolled. In the case of a product formed by hot forging, it is very difficult to set the central axis for turning or rolling, so the central axis of the thread part There is a problem in that it is displaced from the central axis of the connection part, and thus it is very difficult to fit it into the vehicle's bracket.

KR 10-1774864 B1, 2017.09.05., 배경기술KR 10-1774864 B1, 2017.09.05., Background art

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위해 안출된 것으로, 견인고리의 중심축이 어긋나 있지않고, 연결부의 형상을 다양하고 미려하게 가공할 수 있으며, 또한 나사부를 정밀하게 가공할 수 있는 견인고리 제작방법 및 이에 의해 제작된 견인고리를 제공하는 것을 그 목적으로 한다. The present invention has been devised to solve the problems of the prior art as described above, the central axis of the traction ring is not shifted, the shape of the connection part can be variously and beautifully processed, and the screw part can be precisely processed An object of the present invention is to provide a method for manufacturing a traction ring and a traction ring produced thereby.

상기와 같은 목적을 달성하기 위해 안출된 본 발명의 견인고리 제작방법은, The traction ring manufacturing method of the present invention devised to achieve the above object is,

환봉을 준비하는 단계와;preparing a round bar;

상기 환봉을 일정 길이로 절단하는 단계와;cutting the round bar to a predetermined length;

나사부와, 테이퍼지거나 단차진 연결부를 선삭하는 단계와;turning the threaded portion and the tapered or stepped connection portion;

나사부에 선삭 또는 전조에 의해 나사가공하는 단계와;threading the threaded portion by turning or rolling;

열간 단조에 의해 상기 환봉의 나사부 반대측 일단에 고리부를 형성하는 단계와;forming a ring portion at one end opposite to the screw portion of the round bar by hot forging;

고리부를 냉각하는 단계와;Cooling the ring portion;

열간단조된 고리부에 대한 트리밍 단계를 포함하는 것을 특징으로 한다. It is characterized in that it comprises a trimming step for the hot forged ring portion.

견인고리를 열처리하거나 도장하는 단계를 더 포함하는 것도 바람직하다. It is also preferable to further include the step of heat-treating or painting the traction ring.

본 발명에 의하면, 견인고리의 중심축이 나사의 중심축과 어긋나지 않고, 나사부도 정밀하게 가공할 수 있으므로 견인고리를 차량의 브라켓에 용이하게 결합시킬 수 있고, 또한 연결부의 형상을 테이퍼지거나 단차지게 가공하여 견인고리의 무게를 감소시킬 수 있고, 선삭된 연결부의 표면이 매끈하여 미려하게 보이는 효과가 있다. According to the present invention, the central axis of the traction ring does not deviate from the central axis of the screw, and since the screw portion can be precisely machined, the traction ring can be easily coupled to the vehicle's bracket, and the shape of the connection part is tapered or stepped. The weight of the traction ring can be reduced by processing, and the surface of the turned connection part is smooth and has the effect of looking beautiful.

도 1,2 는 차량용 견인고리의 사용예를 나타낸 도.
도 3은 견인고리의 구성을 나타낸 도.
도 4는 본 발명의 제작방법의 순서도
도 5는 견인고리의 여러 형태를 나타낸 도.1 and 2 are views showing an example of use of a tow hook for a vehicle.
Figure 3 is a view showing the configuration of the towing ring.
4 is a flowchart of a manufacturing method of the present invention;
Figure 5 is a view showing various forms of the towing ring.

이상과 같은 본 발명에 대한 해결하고자 하는 과제, 과제의 해결 수단, 발명의 효과를 포함한 구체적인 사항들은 다음에 기재할 실시예 및 도면들에 포함되어 있다. 본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예를 참조하면 명확해질 것이다. Specific details including the problems to be solved, means for solving the problems, and effects of the invention for the present invention as described above are included in the embodiments and drawings to be described below. Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.The terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

이하, 첨부된 도면을 참조하여 본 발명을 그 실시예에 따라 보다 상세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail according to embodiments thereof with reference to the accompanying drawings.

도 4는 본 발명 일 실시예 제작방법을 나타낸 것이다. 4 shows a manufacturing method according to an embodiment of the present invention.

우선SM45C 재질의 환봉을 준비한다. 준비되는 환봉은 제철소 등에서 압출에 의해 생산된 환봉을 의미한다. 본 실시예에서는 SM45C 재질을 사용하였는데, 물리적 성질 및 가공성을 고려하여 사양을 만족할 수 있는 어떠한 금속 재질도 채택될 수 있다. First, prepare a round bar made of SM45C material. The prepared round bar means a round bar produced by extrusion in a steel mill, etc. In this embodiment, SM45C material was used, and any metal material that can satisfy the specifications may be adopted in consideration of physical properties and workability.

환봉은 고리부를 형성될 부분의 체적과 연결부와 나사부의 길이를 고려한 길이로 절단된다. The round bar is cut to a length in consideration of the volume of the portion to be formed with the ring portion and the length of the connecting portion and the screw portion.

절단된 환봉은 선삭에 의해 연결부 및 나사부가 가공된다. 연결부와 나사부가 선삭에 의해 가공되면, 하나의 중심축으로 연결부와 나사부가 형성되므로 이후 선삭이나 전조에 의한 나사가공시에도 그 중심축이 일치하여 정확한 나사가공이 가능하며, 견인고리로 완성되었을 때 차량의 브래킷에 결합시키는 것이 용이하게 된다. The cut round bar is machined with a connecting part and a threaded part by turning. When the connecting part and the threaded part are machined by turning, the connecting part and the threaded part are formed as one central axis. The coupling to the vehicle's bracket is facilitated.

또한 연결부는 선삭에 의해 가공되므로, 도 5(b)(c)와 같이 테이퍼로 가공하거나 단차를 형성하는 것이 용이하며, 제작단가를 낮출 수 있게 된다. In addition, since the connection part is processed by turning, it is easy to process it with a taper or form a step as shown in FIG. 5(b)(c), and it is possible to lower the manufacturing cost.

상기와 같은 선삭과정을 통해 견인고리의 중심축은 매우 정확한 직선 및 직경으로 가공될 수 있어, 차량 범퍼 내의 브라켓을 향해 삽입하고 브라켓에 나사결합시킬 때 매우 정확하고 순조롭게 작업이 가능하게 된다. Through the turning process as described above, the central axis of the towing ring can be machined with a very accurate straight line and diameter, so that it is possible to work very accurately and smoothly when inserting it toward the bracket in the vehicle bumper and screwing it to the bracket.

또한 선삭에 의해 가공된 연결부는 그 표면이 매우 매끈하여 미려한 질감을 나타내고 견인고리의 품질이 매우 고급스럽게 보여지게 한다. In addition, the connection part processed by turning has a very smooth surface, which shows a beautiful texture and makes the quality of the towing ring look very luxurious.

선삭 및 나사가공이 완료되면, 나사부의 반대측 일단에 고리부가 부분 열간단조에 의해 형성되고, 열간단조에 의해 생성되는 고리부는 원형 또는 삼각형 등 견인 로프를 삽입할 다양한 형상으로 가공될 수 있다. When the turning and threading is completed, a ring portion is formed by partial hot forging at one end opposite to the screw portion, and the ring portion generated by hot forging can be processed into various shapes to insert a traction rope, such as a circle or a triangle.

견인고리는 이후 열처리 및 도장공정을 더 거치는 것도 바람직하다. It is also preferable that the traction ring further undergoes a heat treatment and painting process afterward.

상기 방법에 따라 제조된 견인고리는 전체적인 중심축과 나사부와 중심축이 일치하므로 장착이 용이하며, 또한 다양한 형태의 연결부 형상을 구현할 수 있을 뿐만 아니라 그 표면이 매끈하고 미려하며, 제작에 따른 인적/물적 비용을 절감할 수 있게 된다. The tow hook manufactured according to the above method is easy to install because the overall central axis, the screw part, and the central axis coincide, and it can implement various types of connection part shapes, and the surface is smooth and beautiful, and the human / material cost can be reduced.

이상의 설명은 본 발명의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 다양한 수정 및 변형이 가능할 것이다. The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains.

10 : 범퍼 20 : 브래킷
100 : 견인고리 110 : 고리부 120 : 연결부 130 : 나사부10: bumper 20: bracket
100: tow hook 110: hook portion 120: connection portion 130: screw portion

Claims (3)

환봉을 준비하는 단계와;
상기 환봉을 일정 길이로 절단하는 단계와;
나사부와, 테이퍼지거나 단차진 연결부를 선삭하는 단계와;
나사부에 선삭 또는 전조에 의해 나사가공하는 단계와;
열간 단조에 의해 상기 환봉의 나사부 반대측 일단에 고리부를 형성하는 단계와;
고리부를 냉각하는 단계와;
열간단조된 고리부에 대한 트리밍 단계를 포함하는 것을 특징으로 하는 견인고리 제작방법.
preparing a round bar;
cutting the round bar to a predetermined length;
turning the threaded portion and the tapered or stepped connection portion;
threading the threaded portion by turning or rolling;
forming a ring portion at one end opposite to the screw portion of the round bar by hot forging;
Cooling the ring portion;
A method of manufacturing a pull ring, characterized in that it comprises a trimming step for the hot forged ring portion.
 제 1 항에 있어서,
견인고리를 열처리하거나 도장하는 단계를 더 포함하는 것을 특징으로 하는 견인고리 제작방법.
The method of claim 1,
A method of manufacturing a traction ring, characterized in that it further comprises the step of heat-treating or painting the traction ring.
 제 1 항 또는 제 2 항의 제작방법에 의해 제작된 견인고리.A tow hook produced by the manufacturing method of claim 1 or 2.
KR1020200076871A 2020-06-24 2020-06-24 Manufacturing Method Of Towing Hook KR102372957B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101093382B1 (en) * 2007-04-17 2011-12-14 가부시키가이샤 파르테크 Towing device for vehicle, method of manufacturing towing hook for vehicle, and method of manufacturing connection member for vehicle
JP5475036B2 (en) * 2012-02-28 2014-04-16 理研精工株式会社 Towing hook and method of manufacturing the towing hook
JP5878074B2 (en) * 2012-05-01 2016-03-08 株式会社ファルテック Manufacturing method of tow hook for vehicle
KR101774864B1 (en) 2016-05-19 2017-09-05 삼기산업주식회사 Press for making towing hook
KR20180038198A (en) * 2016-10-06 2018-04-16 주식회사 삼원하이테크 Drawbar hook for automobiles and the method of manufacturing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101093382B1 (en) * 2007-04-17 2011-12-14 가부시키가이샤 파르테크 Towing device for vehicle, method of manufacturing towing hook for vehicle, and method of manufacturing connection member for vehicle
JP5475036B2 (en) * 2012-02-28 2014-04-16 理研精工株式会社 Towing hook and method of manufacturing the towing hook
JP5878074B2 (en) * 2012-05-01 2016-03-08 株式会社ファルテック Manufacturing method of tow hook for vehicle
KR101774864B1 (en) 2016-05-19 2017-09-05 삼기산업주식회사 Press for making towing hook
KR20180038198A (en) * 2016-10-06 2018-04-16 주식회사 삼원하이테크 Drawbar hook for automobiles and the method of manufacturing

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