KR930000283B1 - Method for manufacturing non-symmetry forging piece - Google Patents

Method for manufacturing non-symmetry forging piece Download PDF

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Publication number
KR930000283B1
KR930000283B1 KR1019900014780A KR900014780A KR930000283B1 KR 930000283 B1 KR930000283 B1 KR 930000283B1 KR 1019900014780 A KR1019900014780 A KR 1019900014780A KR 900014780 A KR900014780 A KR 900014780A KR 930000283 B1 KR930000283 B1 KR 930000283B1
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South Korea
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die
punch
groove
workpiece
forging
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KR1019900014780A
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Korean (ko)
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KR920006054A (en
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이인구
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주식회사 일륭금속
이인구
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12Forming profiles on internal or external surfaces

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

Abstract

The method forges asymmetrical products such as an automobile door lock instead of machining in the conventional method, to make mass production and standardization possible. The forging method comprises a step of inserting cylindrical workpiece into a groove (1) of a first die (1), and pushing a first punch (3); a step of lifting a second punch (4) to the center line of the first die (1), and inserting the punched workpiece into the eccentric groove of the second punch (4) by pushing a pin (7) on the workpiece within the first die (1); a step of inserting the workpiece into an eccentric groove (10) formed within a second die (2).

Description

비대칭 단조품의 제조방법Manufacturing method of asymmetric forging

제1도(a),(b) 및 (c)는 본 발명에 의한 비대칭 단조품을 제조하기 위한 공정도이고,1 (a), (b) and (c) is a process chart for producing an asymmetric forging according to the present invention,

제2도(a)는 제3펀치에 의한 최종 가공시의 정면도이며,2 (a) is a front view at the time of the final processing by the third punch,

제2도(b),(c)는 제2금형다이 및 제3펀치의 평면을 개략적으로 도시한 도면이고,2 (b) and 2 (c) schematically show the plane of the second die and the third punch,

제3도 본 발명에 의해 제조된 비대칭 단조품을 도시한 사시도이다.3 is a perspective view showing an asymmetric forging produced by the present invention.

본 발명은 자동차등에 적용되는 도어록 장치의 부품으로 사용되는 비대칭 단조품의 제조방법에 관한 것으로, 특히 다이(Die)에서 펀치(Punch)를 이용하여 냉간 단조 가공에 의해 제조되는 볼트, 리벳, 스크류, 샤프트 등의 형상을 비대칭형으로 성형하도록 된 비대칭 단조품의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing an asymmetric forging used as a part of a door lock device applied to automobiles, in particular a bolt, rivet, screw, shaft manufactured by cold forging by using a punch in the die (Die) The present invention relates to a method for producing an asymmetric forging for molding a back shape into an asymmetrical shape.

일반적으로 널리 사용되고 있는 볼트 및 리벳 등의 일반 단조품은 대부분 대칭되는 형상으로 이루어지며, 체결 수단용으로 널리 사용되고 있고, 자동차, 전자산업 등에 널리 사용되고 있는 실정이다.General forgings, such as bolts and rivets, which are widely used in general, have a symmetrical shape, are widely used for fastening means, and are widely used in automobiles and the electronics industry.

그러나, 자동차의 도어록에 사용되는 볼트 및 일반단조품은 도어록의 설계 구조상 비대칭 형상으로 되어야만 원활한 작동을 할 수 있으나, 종래의 대칭 형상의 볼트 및 일반 단조품으로는 적용이 불가능하여 기계가공을 행함으로써 가공시간이 장시간으로 되어 제조코스트를 상승시킬 뿐만 아니라 가공작업이 숙련을 요하므로 불량율이 증대된다고 하는 문제점이 있다.However, the bolts and general forgings used in the door locks of automobiles can be operated smoothly only when they are asymmetrical in the design structure of the door locks, but the machining time is not applicable to the conventional symmetrical bolts and general forgings. This long period of time increases the manufacturing cost, and also requires a skilled work, so there is a problem that the defective rate is increased.

따라서, 상기와 같은 문제점을 개선하기 위하여 일반 자동차의 도어록에 사용하는 단조품을 비대칭 형상의 단조품으로 제작하게 되면, 잠금 및 풀림작용이 원활하게 이루어지지만 단조품을 비대칭 형상으로 제작하기 위하여서는, 금형공정, 프레스공정, 절삭공정 등의 복잡한 여러 단계의 공정을 거치게 되거나, 또는 처음부터 원소재를 절삭 가공해야하기 때문에 많은 비용과 막대한 시간을 소용하게 될 뿐만 아니라 대량생산이 불가능하며, 재료의 손실도 막대하여 원가상승의 주요 원인으로 등장하였던 것이다.Therefore, in order to improve the problems described above, if the forging used in the door lock of a general vehicle is made of asymmetrical forgings, the locking and releasing action is performed smoothly, but in order to manufacture the forgings in an asymmetrical shape, a mold process, As it goes through complicated multi-step processes such as pressing process, cutting process, or cutting raw materials from the beginning, it costs not only a lot of cost and time, but also mass production is impossible, and the material loss is enormous. It appeared as the main cause of the cost increase.

이에 더하여, 상기와 같은 공정에 의한 비대칭 볼트의 작업시, 메탈 플로우(met al flow)현상, 즉, 금속의 조직내에서 흐름을 교란하게 됨으로써 재료의 고유한 결정 조직을 파괴하는 현상이 발생하게 되어 강도및 내구성이 저하되는 등의 문제점도 있었다.In addition, when the asymmetric bolt is operated by the above process, metal flow phenomenon, that is, disturbing the flow in the metal structure, causes the intrinsic crystal structure of the material to be destroyed. There were also problems such as deterioration in strength and durability.

본 발명은 상술한 바와 같은 종래의 문제점 및 결점을 개선하기 위한 것으로 그 목적은, 종래와 같은 수 많은 공정을 대폭 생략함으로써 대량 생산이 가능함은 물론, 냉간 단조 가공에 의해 이루어져 강도 및 내구성이 향상되고, 품질의 균일화를 통하여 제품의 정밀도가 우수하며, 비용 및 재료 손실을 절감할 수 있는 비대칭 단조품의 제조방법을 제공하는데 있다.The present invention is to improve the conventional problems and shortcomings as described above, the object of the present invention is that by mass omission of a number of processes, such as the mass production is possible, as well as by cold forging processing to improve the strength and durability In order to provide a manufacturing method of asymmetric forgings that can improve the precision of products through the uniformity of quality and reduce the cost and material loss.

본 발명의 또 다른 목적은, 2단계로 나뉘어지는 다이에서 3개의 펀치를 이용하여 냉각 단조 가공할 수 있는 비대칭 단조품의 제조방법을 제공하는데 있다.It is still another object of the present invention to provide a method for producing an asymmetric forging that can be cold forged by using three punches in a die divided into two stages.

이하, 첨부한 도면에 의거하여 본 발명의 실시예를 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described in detail based on an accompanying drawing.

우선, 소정길이로 절단된 원기둥 형상의 원소재를 제1금형다이(1)의 홈(6)내로 삽입하고, 이를 제1펀치(3)로서 압입하게 되면 원소재는 제1금형다이(1)의 내면에 형성된 홈(6)의 형상에 의해 제1도(b)에 도시한 바와 같은 형상으로 1차가공된다.First, when the cylindrical raw material cut to a predetermined length is inserted into the groove 6 of the first mold die 1 and press-fitted as the first punch 3, the raw material is the first mold die 1. The primary processing is performed by the shape of the groove 6 formed on the inner surface of the shape as shown in FIG.

그후, 제2펀치(4)가 상향이동하여 제1금형다이(1)의 중앙 일직선 위치로 이동하게 되며, 금형다이내에 장착되어 있는 핀(7)에 의해 반가공된 소재를 밀어주게 되어 제1금형 다이(1)에서 반 가공 소재가 배출됨과 동시에 제2펀치(4)의 내측에 편심형성된 홈(8)내에 소재가 삽입되어진다.Thereafter, the second punch 4 moves upward to move to the center straight position of the first mold die 1, and pushes the semi-processed material by the pin 7 mounted in the mold die. At the same time as the semi-processed material is discharged from the mold die 1, the material is inserted into the groove 8 formed eccentrically inside the second punch 4.

계속해서, 제2펀치(4)가 삽입된 소재(9)와 함께 하향이동하여 제2금형다이(2)내에 편심형성된 홈(10)내로 소재를 삽입함과 동시에 압입하게 되며, 이때 제2금형다이(2)내로 삽입되는 소재(9)의 단면중심과 제2펀치(4)에 물려진 소재(9)의 단면 중심을 편심, 즉 중심점에서 약간 엇갈리게 하여 제2펀치(4)가 소재(9)에 가하는 하중이 비대칭적으로 작용하도록 함으로써 성형되는 소재(9)의 형상도 비대칭 형상으로 형성되며, 본 발명에 따른 비대칭 단조품이 되기 위한 예비 형상으로 형성된다.Subsequently, the second punch 4 moves downward with the inserted material 9 to insert the material into the eccentric groove 10 formed in the second mold die 2 and simultaneously press-fit the second mold. The second punch 4 is made of the material 9 by the center of the cross-section of the material 9 inserted into the die 2 and the center of the cross-section of the material 9 that is bitten by the second punch 4. The shape of the material 9 to be molded is also formed into an asymmetrical shape by causing a load applied to the asymmetrically acting asymmetrically, and is formed into a preliminary shape for becoming an asymmetrical forged product according to the present invention.

그후, 제2펀치(4)는 상측으로 이동되고, 재차 제3펀치(5)가 제2금형다이(2)의 중심 일직선 상으로 위치하게 되고 제2금형다이(2)의 내부에 소재(9)를 압입하게 되는데, 이때 제2금형다이(2)의 내부에 형성된 홈(10)의 형상에 따라 비대칭 볼트의 헤드 부분이 소정의 형상으로 마무리 가공되어 비대칭 단조품의 제작공정이 완료된 후 다이세트와 펀치헤드가 벌어질때 완성된 소제(9)는 금형다이의 밖으로 배출되어진다.Thereafter, the second punch 4 is moved upwards, and again, the third punch 5 is positioned above the center of the second mold die 2 and the material 9 is placed inside the second mold die 2. In this case, the head part of the asymmetric bolt is finished to a predetermined shape according to the shape of the groove 10 formed in the second mold die 2, and then the die set and the die set are completed. When the punch head is opened, the finished sweep 9 is discharged out of the die.

이와 같은 동작이 반복되면서 제1금형다이(1)의 홈(6)내에는 새로운 미가공 소재가 삽입되어 상기와 같은 공정을 반복적으로 행하게 되며, 상기 공정에 의해 가공이 완료된 비대칭 단조품은 용도에 따라 열처리 또는 도금되어 각종기계의 부품으로 사용되며, 본 발명에서와 같이 제3도에 도시한 바와 같은 형상의 비대칭 단조품은 예컨데, 자동차의 도어록 장치에 적용되는 일부품으로 장착되는 것이다.As this operation is repeated, a new raw material is inserted into the groove 6 of the first mold die 1 to perform the above process repeatedly, and the asymmetric forging finished by the process is heat treated according to the use. Or plated and used as parts of various machines, as in the present invention, the asymmetric forging of the shape as shown in Figure 3, for example, is to be mounted as a part applied to the door lock device of the vehicle.

상술한 바와 같이 본 발명에 의하면, 비대칭 단조품의 제조시 종래와 같은 수 많은 공정을 대폭 생략함으로써 대량생산이 가능함은 물론, 상온에서 가공됨에 따라 비대칭 단조품의 강도 및 내구성이 향상되고, 품질의 균일화가 가능하여 제품의 정밀도 및 호환성이 우수하며, 비용 및 재료 손실을 현저하게 줄일 수 있는 우수한 효과가 있다.As described above, according to the present invention, the production of asymmetric forgings greatly reduces the number of processes in the prior art, thereby enabling mass production, as well as improving the strength and durability of the asymmetric forgings as they are processed at room temperature. It is possible to have excellent precision and compatibility of the product, and has an excellent effect of significantly reducing cost and material loss.

Claims (1)

소정길이로 절단된 소재(9)를 1차가공한 후, 내측에 홈(10)이 편심형성된 제2금형다이(2)내에서 상기홈(10)과 대응하는 홈(8)을 내측에 형성한 제2펀치(4)를 작용시켜 상기 소재(9)에 가해지는 하중이 비대칭적으로 작용되도록 하는 것을 특징으로 하는 비대칭 단조품의 제조방법.After primary processing the raw material 9 cut to a predetermined length, a groove 8 corresponding to the groove 10 is formed in the second mold die 2 in which the groove 10 is eccentrically formed therein. A method of manufacturing an asymmetric forging, characterized in that the second punch (4) is acted on so that the load applied to the material (9) acts asymmetrically.
KR1019900014780A 1990-09-18 1990-09-18 Method for manufacturing non-symmetry forging piece KR930000283B1 (en)

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Application Number Priority Date Filing Date Title
KR1019900014780A KR930000283B1 (en) 1990-09-18 1990-09-18 Method for manufacturing non-symmetry forging piece

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KR930000283B1 true KR930000283B1 (en) 1993-01-15

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