KR20150093942A - Input shaft and the manufacture method for car gearbox - Google Patents

Input shaft and the manufacture method for car gearbox Download PDF

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KR20150093942A
KR20150093942A KR1020140014589A KR20140014589A KR20150093942A KR 20150093942 A KR20150093942 A KR 20150093942A KR 1020140014589 A KR1020140014589 A KR 1020140014589A KR 20140014589 A KR20140014589 A KR 20140014589A KR 20150093942 A KR20150093942 A KR 20150093942A
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input shaft
sides
forming
manufacturing
round bar
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KR1020140014589A
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Korean (ko)
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KR101671716B1 (en
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장준수
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장준수
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • 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
    • B21J5/08—Upsetting
    • 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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/06—Swaging presses; Upsetting presses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Forging (AREA)

Abstract

The present invention relates to a method for manufacturing an input shaft for a transmission of a vehicle and, more specifically, to a method for manufacturing an input shaft capable of significantly reducing equipment costs and processing costs by supplementing weakness of a seamless pipe and a round bar, improving durability and wear resistance of an input shaft, reducing manufacturing costs, and mass producing. According to the present invention, the method for manufacturing an input shaft comprises: a material preparing step of preparing a round bar material; a step of forming a mandrel hole by drilling or piercing both sides of the round bar material; a swaging step of forming a long side shaft and a short side shaft in both sides by interposing a flange by performing a swaging step of inserting a mandrel into both sides of the round bar material and passing a dies through both sides; a step of forming a spline by pressing a dies for forming a spline in the long side shaft and the short side shaft formed in both sides; and a step of forming an oil hole. The present invention has effects of supplementing weakness of a method for manufacturing a seamless pipe, providing an input shaft with improved durability and wear resistance as a flow line of metal is preserved by a swaging step while a round bar is used as a material, reducing processing costs and mechanical equipment costs for manufacturing an input shaft, and saving costs due to mass production.

Description

자동차 변속기용 인풋 샤프트 제조방법{Input shaft and the manufacture method for car gearbox}Technical Field [0001] The present invention relates to an input shaft for an automobile transmission,

본 발명은 자동차 변속기용 인풋 샤프트 제조방법에 관한 것으로서, 더욱 상세하게는 환봉을 소재로 하고, 스웨이징(swaging) 공법으로 인풋 샤프트를 제조하여 인풋 샤프트의 내구성 및 내마모성 향상과 제조원가를 절감할 수 있는 자동차 변속기용 인풋 샤프트를 제조하는 방법에 관한 것이다.The present invention relates to a method of manufacturing an input shaft for an automotive transmission, and more particularly, to a method of manufacturing an input shaft by a swaging method using a round bar as a material, thereby improving the durability and abrasion resistance of the input shaft, To a method of manufacturing an input shaft for an automotive transmission.

주지하는 바와 같이 자동차용 인풋 샤프트는 중심부에 홀이 없고 한쪽에는 스플라인이 형성되고 다른 한쪽에는 사각결합부로 구성된 조향장치용 인풋 샤프트가 있고, 중심부에 홀이 있고, 외부에는 테이퍼로 구성된 서스팬션용 인풋 샤프트가 있고, 중심부에 오일홀이 형성되어 오일이 서로 혼합되지 못하도록 양쪽으로 나누어지면서 외부 양쪽에는 스플라인이 형성된 자동차 변속기용 인풋 샤프트가 있다.As will be known, an automotive input shaft has an input shaft for a steering apparatus, which has no hole in the center, a spline on one side and a square coupling on the other side, a hole in the center and an input shaft for suspension, And an input shaft for an automotive transmission in which an oil hole is formed in the center portion so as to divide the oil into two parts so as not to be mixed with each other and to have a spline on both sides.

상기한 인풋 샤프트는 용도가 다른 만큼 구조가 각각 다르고 제조방법도 역시 다른 것으로 알려져 있다.It is known that the above-described input shaft has different structures due to different uses, and the manufacturing method is also different.

상기한 인풋 샤프트 중에 본 발명과 대비되는 자동차 변속기용 인풋 샤프트는 자동차 엔진의 동력을 전달받아 메인샤프트에 전달하고 상기 메인샤프트는 인풋 샤프트와 서로 다른 기어비로 기어물림되어 차동장치에 변속된 동력을 전달하는 구조를 갖고 있다.Among the input shafts, an input shaft for an automotive transmission, which is compared with the present invention, receives the power of an automobile engine and transmits the power to the main shaft. The main shaft is meshed with the input shaft at different gear ratios to transmit the shifted power to the differential gear. .

종래 상기와 같은 자동차 변속기용 인풋 샤프트의 제조방법을 살펴본다.A manufacturing method of the input shaft for an automotive transmission will be described.

먼저, 환봉을 인풋 샤프트의 길이로 절단하여 외부에 모양을 절삭가공으로 완성하고 중심부에 오일홀은 드릴가공으로 완성하여 버어를 제거하고 양쪽에는 전조공정으로 스플라인을 형성시켜 완성된다.First, the round bar is cut into the length of the input shaft, and the outer shape is finished by cutting. The oil hole in the center is completed by drilling, and the burr is removed, and the splines are formed by the rolling process on both sides.

상기와 같은 제조방법에 의한 자동차 변속기용 인풋 샤프트는 구조적으로 금속의 유동성 가공이 아닌 절삭가공으로 가공됨으로써 금속의 단류선(metal flow)이 절단된 상태가 되어 금속의 인장강도, 피로강도 등 기계적 성질에서 크게 떨어지는 단점이 있다.The input shaft for an automotive transmission according to the above-described manufacturing method is structurally processed by cutting processing instead of fluid processing, so that the metal flow of the metal is cut and the mechanical properties such as tensile strength and fatigue strength of the metal .

그리고, 가공품 치수의 정밀도 보증이 어렵다. CNC선반 등에 의해서 절삭가공시 절삭기계 구성요소 중 바이트팁(bite tip)등의 공구 마모로 인하여 치수변형이 발생하는 단점이 있고, 특히 길이방향의 정밀도는 일반적으로 가공비용을 줄이기 위해 수치제어식 장비가 아닌 일반적인 컷팅방법으로 가공함으로써 정밀도가 크게 떨어지는 단점이 있다.Moreover, it is difficult to assure the accuracy of the workpiece dimensions. In CNC lathe, there is a disadvantage that dimensional deformation occurs due to tool wear of cutting tool components such as bite tip during cutting. Particularly, in order to reduce machining cost, numerical control equipment There is a disadvantage in that the precision is greatly reduced by processing by a general cutting method other than the above.

또 다른 제조방법으로는 파이프를 사용하여 제조하는데, 사용되는 원재료 가격이 압조용 원재료에 비해 2배 이상인 고가의 이음매 없는 파이프(seamless pipe)를 사용하여야만 가능하기 때문에 제조원가가 많이 소요되는 문제점이 있다.Another manufacturing method is to manufacture a pipe using a seamless pipe having a cost of 2 times or more higher than that of the pressure-reducing raw material, so that the manufacturing cost is high.

한국 등록특허 제10-0817044호(등록일자: 2008년03월20일)Korean Registered Patent No. 10-0817044 (Registered Date: March 20, 2008) 한국 등록특허 제10-1257060호(등록일자: 2013년04월16일)Korean Registered Patent No. 10-1257060 (Registration date: April 16, 2013) 한국 등록특허 제10-1071238호(등록일자: 2011년09월30일)Korean Registered Patent No. 10-1071238 (registered on September 30, 2011) 한국 등록특허 제10-0812440호(등록일자: 2008년03월04일)Korean Registered Patent No. 10-0812440 (Registered Date: March 04, 2008)

본 발명은 선행기술에서 자동차 변속기용 인풋 샤프트 재료로 사용한 환봉과 이음매 없는 파이프(seamless pipe)의 단점을 보완하고, 특히 환봉을 소재로 사용하면서 스웨이징 공법에 의해서 인풋 샤프트를 제조함으로써, 절삭가공에 의한 설비 비용 및 가공비용을 크게 절감할 수 있고, 또 인풋 샤프트의 내구성 및 내마모성 향상과 제조원가를 절감 및 대량생산할 수 있는 인풋 샤프트의 제조방법을 제공하는데 그 목적이 있다.The present invention complements the disadvantages of a round bar and a seamless pipe used as an input shaft material for an automobile transmission in the prior art, and particularly, by manufacturing an input shaft by a swaging method while using a round bar as a material, And a manufacturing method of an input shaft capable of reducing manufacturing costs and mass production by improving the durability and wear resistance of the input shaft.

상기 목적을 달성하기 위한 본 발명에 의한 자동차 변속기용 인풋 샤프트의 제조방법은, 환봉을 절단하여 환봉소재를 준비하는 소재준비공정과, 환봉소재의 양쪽에 드릴가공 또는 피어싱가공으로 맨드릴홀을 형성하는 공정과, 환봉소재의 양쪽에 맨드릴을 넣고 양쪽에 다이스 통과시키는 스웨이징 공정을 수행하여 플랜지를 두고 양쪽으로 장측 샤프트와 단측 샤프트를 성형하는 스웨이징 공정과, 양쪽으로 형성된 장측 샤프트와 단측 샤프트에 스플라인 성형용 다이스를 가압하여 스플라인을 형성하고 오일구멍을 형성하는 것을 특징으로 한다.In order to accomplish the above object, the present invention provides a manufacturing method of an input shaft for an automotive transmission, comprising: a material preparing step of preparing a round bar material by cutting a round bar; forming a mandrel hole by drilling or piercing on both sides of the round bar material A swaging step of forming a long side shaft and a short side shaft on both sides of a flange by performing a swaging process in which a mandrel is inserted into both sides of a round bar material and dies are passed through both sides; And the molding die is pressed to form a spline to form an oil hole.

이상과 같은 본 발명에 의하면, 환봉을 절삭가공하는 제조방법과, 이음매 없는 파이프(seamless pipe)에 의한 제조방법에 단점을 보완하고, 특히 환봉을 소재로 사용하면서 스웨이징 공정에 의해서 금속의 단류선(metal flow)이 보존되는 관계로 내구성 및 내마모성이 크게 향상된 인풋 샤프트를 제공할 수 있으며, 인풋 샤프트의 제조를 위한 기계설비 비용 및 가공비용을 크게 절감할 수 있고, 대량생산을 할 수 있기 때문에 경제적인 측면에서 많은 효과가 기대되는 발명이다.According to the present invention as described above, it is possible to solve the disadvantages of the manufacturing method of cutting a round bar and the manufacturing method of a seamless pipe, and more particularly to a method of manufacturing a metal pipe by a swaging process, it is possible to provide an input shaft with greatly improved durability and abrasion resistance due to preservation of metal flow, and it is possible to greatly reduce the mechanical and processing costs for manufacturing the input shaft, This is an invention that is expected to have many effects in terms of human being.

도 1은 본 발명에 의한 인풋 샤프트 환봉소재, 도 2는 본 발명에 의한 인풋 샤프트 환봉소재에 맨드릴홀이 형성된 예시도이다.
도 3,4는 본 발명에 의한 인풋 샤프트의 플랜지 및 장측, 단측 샤프트의 제조공정 예시도이고,
도 5,6은 인풋 샤프트의 장측, 단측 샤프트의 단부에 스플라인 제조공정 예시도이며,
도 7은 본 발명에 의한 인풋 샤프트 환봉소재를 인풋 샤프트로 완성한 예시도이고,
도 8은 본 발명에 의한 인풋 샤프트의 제조공정도이다.FIG. 1 is a view illustrating an input shaft round bar material according to the present invention, and FIG. 2 is a view illustrating a mandrel hole formed in an input shaft round bar material according to the present invention.
3 and 4 are diagrams illustrating the manufacturing process of the flange and the long and short sides of the input shaft according to the present invention,
Figs. 5 and 6 are illustrations of the spline manufacturing process at the long side of the input shaft and the end of the short shaft,
Fig. 7 is an exemplary view showing the input shaft round bar material according to the present invention completed with an input shaft,
Fig. 8 is a manufacturing process diagram of an input shaft according to the present invention.

이하, 본 발명에 의한 자동차 변속기용 인풋 샤프트 제조방법에 관한 실시예를 도면과 관련하여 상세하게 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a method of manufacturing an input shaft for an automotive transmission according to the present invention will be described in detail with reference to the drawings.

본 발명에 의한 자동차 변속기용 인풋 샤프트의 제조방법은, 제조하고자 하는 인풋 샤프트의 길이 및 체적과 스웨이징 공정으로 압축되는 비율을 정확하게 계산하여 SCR420HB 환봉을 절단하여 환봉소재(1)를 준비하는 소재준비공정과,A method of manufacturing an input shaft for an automotive transmission according to the present invention comprises the steps of accurately calculating the length and volume of an input shaft to be manufactured and the ratio of compression by a swaging process to prepare a material for preparing the round bar material 1 by cutting the round bar SCR420HB The process,

상기 소재준비공정에 의해서 얻어진 환봉소재(1)의 양쪽에 드릴가공 또는 피어싱가공으로 맨드릴홀(2)을 형성하는 공정과,A step of forming a mandrel hole (2) by drilling or piercing both sides of the round bar material (1) obtained by the material preparation step,

환봉소재(1)의 양쪽에 형성된 맨드릴홀(2)에 맨드릴(10)을 넣고 양쪽에 다이스(11) 통과시키는 스웨이징 공정을 수행하여 환봉소재(1)의 가운데 플랜지성형부(3)를 두고 양쪽으로 장측 샤프트(40)와 단측 샤프트(20)를 1차 스웨이징 공정과,A swaging process is performed in which the mandrel 10 is inserted into the mandrel holes 2 formed on both sides of the round bar material 1 and the dies 11 are passed on both sides of the round bar material 1 to place the center flange forming portion 3 of the round bar material 1 The long side shaft 40 and the short side shaft 20 are subjected to a first swaging process and a second swaging process,

상기 1차 스웨이징공정을 포함하면서 양쪽에 형성된 맨드릴홀(2)에 맨드릴(10)을 넣은 상태에서 양쪽에 다이스(11')(12)를 통과시키는 스웨이징 공정을 수행하여 가운데 플랜지(30)를 형성하고, 양쪽으로 형성된 장측 샤프트(40)와 단측 샤프트(20)의 스플라인성형부(4)를 성형하는 2차 스웨이징 공정과,A swaging process is performed in which the dies 11 'and 12 are passed on both sides while the mandrel 10 is inserted into the mandrel holes 2 formed on both sides including the primary swaging process, A secondary swaging step of forming the long shaft 40 formed on both sides and the spline forming part 4 of the short shaft 20,

상기 2차 스웨이징공정에 의한 장측 샤프트(40)와 단측 샤프트(20)의 스플라인성형부(4)에 스플라인 다이스(12')를 가압하여 스플라인(35)을 형성하는 공정과,A step of pressing the spline die 12 'to the spline forming portion 4 of the long shaft 40 and the short shaft 20 by the secondary swaging process to form the spline 35,

맨드릴홀(2)에서 맨드릴(10)을 제거하여 인풋 샤프트의 양쪽에 오일홀(50)이 형성되게 하고 내,외측 오일구멍(51)과, 오일실 결합홈 등 필요한 구성요소를 형성하는 공정으로 이루어진다.The mandrel 10 is removed from the mandrel hole 2 so that the oil holes 50 are formed on both sides of the input shaft and the necessary components such as the inner and outer oil holes 51 and the oil seal groove are formed .

이상과 같은 본 발명에 의한 자동차 변속기용 인풋 샤프트는 자동차 변속기에 설치되어 사용되는 것으로서, 인풋 샤프트의 작용은 일반적인 것이므로 구체적인 설명은 생략하였다.The input shaft for an automotive transmission according to the present invention is used in an automotive transmission. Since the operation of the input shaft is general, a detailed description thereof is omitted.

본 발명에 의한 자동차 변속기용 인풋 샤프트의 제조방법에 의하면, 인풋 샤프트를 지름이 큰 환봉소재를 사용하여 스웨이징 공법으로 여러 단계 압축되면서 플랜지 및 스플라인이 형성되었기 때문에 금속조직이 치밀하게 형성됨과 동시에 금속의 단류선(metal flow)이 완벽하게 보존되는 관계로 인풋 샤프트의 전체적인 내구성 및 내마모성이 크게 향상된 자동차 변속기용 인풋 샤프트를 제공할 수 있게 된다.According to the method of manufacturing an input shaft for an automotive transmission according to the present invention, a flange and a spline are formed while the input shaft is compressed in several stages by a swaging method using a large-diameter round rod material, It is possible to provide an input shaft for an automotive transmission in which the overall durability and wear resistance of the input shaft is greatly improved.

1: 환봉소재
2: 맨드릴홀
3: 플랜지 성형부
4: 스플라인 성형부
10: 맨드릴
11,11'12,12': 다이스
30: 플랜지
35: 스플라인
20: 단측 샤프트
40: 장측 샤프트1: Round bar material
2: mandrel hole
3: flange forming part
4: spline forming part
10: Mandrel
11, 11 '12, 12': Dice
30: Flange
35: Spline
20: Short shaft
40: long shaft

Claims (1)

인풋 샤프트의 길이 및 체적과 스웨이징 공정으로 압축되는 비율을 정확하게 계산하고 계산된 길이로 SCR420HB 환봉을 절단하여 환봉소재를 준비하는 소재준비공정과,
상기 소재준비공정에 의해서 얻어진 환봉소재의 양쪽에 드릴가공 또는 피어싱가공으로 맨드릴홀을 형성하는 공정과,
환봉소재의 양쪽에 형성된 맨드릴홀에 맨드릴을 넣고 양쪽에 다이스를 통과시키는 스웨이징 공정을 수행하여 가운데 플랜지 성형부를 두고 양쪽으로 장측 샤프트와 단측 샤프트를 성형하는 1차 스웨징공정과,
상기 1차 스웨이징 공정을 포함하면서 양쪽에 형성된 맨드릴홀에 맨드릴을 넣고 양쪽에 다이스를 통과시키는 스웨이징 공정을 수행하여 가운데 플랜지를 성형을 완성하고 양쪽으로 형성된 장측 샤프트와 단측 샤프트에 스플라인성형부를 성형하는 2차 스웨이징 공정과,
상기 2차 스웨이징 공정에 의한 장측 샤프트와 단측 샤프트에 형성된 스플라인 성형부에 스플라인 성형용 다이스를 가압하여 스플라인을 형성하는 스플라인 성형공정 및 오일구멍을 형성하는 단계;로 이루어진 것을 특징으로 하는 자동차 변속기용 인풋 샤프트 제조방법.A material preparation process for precisely calculating the length and volume of the input shaft and the ratio of compression by the swaging process and cutting the SCR420HB round bar to the calculated length,
A step of forming a mandrel hole by drilling or piercing both sides of the round bar material obtained by the material preparation step,
A first swaging step of forming a long shaft and a short shaft on both sides of a middle flange forming part by performing a swaging process of inserting mandrels into mandrel holes formed on both sides of the round bar material and passing the dies on both sides,
A swaging process is performed in which the mandrel is inserted into the mandrel holes formed on both sides and the dies are passed through both sides of the mandrel hole including the primary swaging process so that the middle flange is formed and the long shaft formed on both sides and the spline forming portion formed on the short shaft are formed A second swaging process for performing a second swaging process,
And a spline forming step of forming a spline by pressing a spline forming die on a spline forming part formed on the long shaft and the short shaft by the second swaging step and forming oil holes Manufacturing method of input shaft.
KR1020140014589A 2014-02-10 2014-02-10 Input shaft and the manufacture method for car gearbox KR101671716B1 (en)

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