KR100345859B1 - Method for manufacturing aluminum yoke of automobile propeller shaft - Google Patents

Method for manufacturing aluminum yoke of automobile propeller shaft Download PDF

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Publication number
KR100345859B1
KR100345859B1 KR1019970033649A KR19970033649A KR100345859B1 KR 100345859 B1 KR100345859 B1 KR 100345859B1 KR 1019970033649 A KR1019970033649 A KR 1019970033649A KR 19970033649 A KR19970033649 A KR 19970033649A KR 100345859 B1 KR100345859 B1 KR 100345859B1
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yoke
workpiece
forming
propeller shaft
manufacturing
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KR1019970033649A
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Korean (ko)
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KR19990010774A (en
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박석완
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기아자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/02—Removing or drawing-off work
    • B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
    • B21C35/026—Removing sections from the extruded work, e.g. removing a strip to create an open profile

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

Abstract

PURPOSE: A method for manufacturing the aluminum yoke of an automobile propeller shaft is provided to improve productivity and reduce processing cost by fabricating a yoke using the extruded workpiece through press process after extruding a workpiece. CONSTITUTION: The method for manufacturing the aluminum yoke of an automobile propeller shaft comprises first step of forming a blank shape(4) in such a way that both sides of a cylindrical workpiece(1) are outwardly projected by extrusion in the amount as much as a certain width; second step of laterally cutting the blank shaped workpiece formed in the first step so that the workpiece has a certain thickness; third step of forming the workpiece in a yoke shape by axially bending the projecting part of both sides of the workpiece cut in the second step through press process; and fourth step of forming a hole on the end part of the projecting part of both sides of the yoke formed in the third step and forming a hole on the central shaft so that the hole is connected to the propeller shaft.

Description

자동차 추진축의 알루미늄요크 제조방법Manufacturing method of aluminum yoke of automobile propulsion shaft

본 발명은 자동차의 동력전달장치중 추진축 연결부에 장착되는 요크에 관한 것으로서, 추진축 요크의 제조방법을 개선하여 공정이 단축되도록 하고 제조비용이 절감되도록 하는 것이다.The present invention relates to a yoke mounted on the propulsion shaft connecting portion of the power transmission device of the vehicle, to improve the manufacturing method of the propulsion shaft yoke to shorten the process and to reduce the manufacturing cost.

일반적으로 후륜구동형 자동차는 도 1에 도시되는 바와 같이, 동력을 발생하는 기관(10)에 속도를 다단으로 감속할 수 있도록 하는 변속기(20)가 연동 가능하게 연결되고, 유니버설 조인트의 요크(31)에 의해 축의 횡방향 요동이 가능하게 형성되는 추진축(30)의 양단부에 변속기(20)의 출력축과 종감속장치(40)가 연동 가능하게 연결되며, 종감속장치(40)에 양쪽 바퀴(50)가 구동측에 의해 연동 가능하게 연결되어 있다. '요크(yoke)'라 함은 추진축에서 십자축으로 연결하기 위해 양쪽을 U자 형으로 만들어진 부분은 의미합니다.Generally, as shown in FIG. 1, a rear wheel drive type vehicle may include a transmission 20 that is capable of decelerating speed in multiple stages to an engine 10 that generates power, and is connected to the yoke 31 of a universal joint. The output shaft of the transmission 20 and the longitudinal reduction gear 40 are operatively connected to both ends of the propulsion shaft 30 which is formed to allow the lateral oscillation of the shaft by), and both wheels 50 to the longitudinal reduction gear 40. ) Is linked to each other by the drive side. The term 'yoke' means the part made of U-shape on both sides of the propulsion shaft to connect with the cross shaft.

이러한 자동차는 기관(10)의 연소작용에 의해 동력을 얻게 되고, 출력되는 동력이 변속기(20)에서 감속에 의해 증강되며, 증강되고 감속된 출력이 추진축(30)과 종감속장치(40)애 의해 바퀴(50)로 전달되어 차량이 움직이도록 한다. 한편, 추진축(30)은 유니버설 조인트의 요크(31)가 각방향으로 요동이 가능하여 변속기(20)와 종감속장치(40)의 위치편차를 수용하도록 하므로 동력전달이 원활하도록 한다.This vehicle is powered by the combustion action of the engine 10, the output power is augmented by the deceleration in the transmission 20, the increased and decelerated output is the propulsion shaft 30 and the longitudinal reduction gear 40 It is transmitted to the wheel 50 by the vehicle to move. On the other hand, the propulsion shaft 30 is to allow the yoke 31 of the universal joint to swing in each direction to accommodate the positional deviation of the transmission 20 and the longitudinal reduction gear 40 so that power transmission is smooth.

여기에서, 유니버설 조인트의 요크(31)는 도 2에 도시되는 바와 같이, 전면부가 개구되는 원통형으로 형성되고, 개구된 전면부 양측에 구멍이 형성된 돌출부가 형성되어, 동일하게 형성된 한쌍의 요크(31)가 돌출부의 구멍에 회동 가능하게 장착되는 십자형핀에 의해 서로 엇갈리게 결합되며, 각 요크(31)의 후면부가 용접에 의해 추진축에 결합된다.Here, the yoke 31 of the universal joint is formed in a cylindrical shape in which the front part is opened, as shown in FIG. 2, and protrusions formed with holes are formed on both sides of the opened front part, so that a pair of yokes 31 are formed in the same manner. ) Are alternately coupled to each other by cross pins rotatably mounted in the holes of the protrusions, and the rear portions of each yoke 31 are coupled to the propulsion shaft by welding.

이러한 유니버설 조인트의 요크(31)는 십자형핀에 의해 한쌍으로 결합되어 돌출부와 십자형핀에 의해 각 방향으로 소정각도로 회동이 가능하게 된다.The yoke 31 of the universal joint is coupled in pairs by cross pins so that the protrusion and the cross pins can be rotated at a predetermined angle in each direction.

한편, 이러한 유니버설 조인트 요크의 종래 제조방법은 도 3에 도시되는 바와 같이, 첫단계에서 원통형으로 형성되는 소재(1)를 1차로 가공하고, 제2단계에서가공된 소재(1)를 사상하며, 사상된 소재를 제3단계에서 트리임하고, 트리임한 것을 제4단계에서 가공하며, 제5단계에서 열처리 공정에 의해 강도를 증가시킨다.On the other hand, the conventional method of manufacturing a universal joint yoke, as shown in Figure 3, the first step of processing the raw material (1) formed in a cylindrical shape in the first step, the finishing of the processed material (1) in the second step, The mapped material is trimmed in the third step, the trimmed material is processed in the fourth step, and the strength is increased by the heat treatment process in the fifth step.

이러한 종래 유니버설 조인트 요크의 제조방법은 경량화와 임계속도증가를 목적으로 알루미늄에 의한 경량추진축을 적용하는데, 특히 알루미늄의 경우 파이프소재를 이용 T6열처리한 다음, 동일한 재질로서 요크를 단조공법으로 제조하고 있으나, 온도제어가 복잡한 관계로 가공비용이 상승되는 문제점이 있었다.The conventional manufacturing method of the universal joint yoke is applied to the lightweight propulsion shaft made of aluminum for the purpose of light weight and increase the critical speed. In particular, in the case of aluminum after the T6 heat treatment using a pipe material, the yoke is manufactured by the forging method. As a result, the temperature control is complicated and the processing cost is increased.

본 발명은 상기와 같은 종래의 문제점을 해소하기 위해, 소재를 압출한후 프레스 공정에 의해 요크를 제작하도록 하여 생산성을 높이고 가공비용은 저감하도록 하는 자동차 추진축의 알루미늄요크 제조방법을 제공하는 것을 목적으로 하는 것이다.The present invention is to provide a method of manufacturing aluminum yoke of the automobile propulsion shaft to increase the productivity and to reduce the processing cost by manufacturing the yoke by the press process after extruding the material in order to solve the conventional problems as described above. It is.

도 1 은 일반 자동차의 동력전달장치를 나타내는 개략도1 is a schematic diagram showing a power transmission device of a general vehicle

도 2 는 추진축 요크를 나타내는 사시도2 is a perspective view showing a propulsion shaft yoke

도 3 은 종래 추진축 요크의 제조공정을 나타내는 공정도3 is a process chart showing a manufacturing process of a conventional propulsion shaft yoke.

도 4 는 본 발명의 요크 제조 제1공정을 나타내는 사시도4 is a perspective view showing a yoke manufacturing first step of the present invention;

도 5 는 본 발명의 요크 제조 후반공정을 나타내는 공정도Figure 5 is a process chart showing the yoke production second step of the present invention.

* 도면중 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 기관 20 : 변속기10: engine 20: transmission

30 : 추진축 31 : 요크30: propulsion shaft 31: yoke

40 : 종감속장치 50 : 바퀴40: longitudinal reduction device 50: wheels

먼저, 본 발명 유니버설 조인트의 요크도 전면부가 개구되는 원통형으로 형성되고, 개구된 전면부 양측에 구멍이 형성된 돌출부가 형성되어, 동일하게 형성된 한쌍의 요크가 돌출부의 구멍에 회동 가능하게 장착되는 십자형핀에 의해 서로 엇갈리게 결합되며, 각 요크의 후면부가 추진축에 용접에 의해 결합된다.First, the yoke of the universal joint of the present invention is also formed in a cylindrical shape in which the front part is opened, and protrusions formed with holes are formed at both sides of the opened front part, and a pair of identically formed yokes are rotatably mounted in the holes of the protrusions. Are alternately coupled to each other, and the rear portions of each yoke are joined by welding to the propulsion shaft.

단, 본 발명은 도 4와 도 5에 도시되는 바와 같이, 첫단계에서 원통형으로 형성되는 소재(1)가 압출 공정을 통해 원통 양측이 외곽쪽으로 소정폭만큼 돌출 형성되도록 블랭크 형상(4)을 만들고, 제2단계에서 블랭크 형상의 소재를 20mm정도의 두께가 되도록 횡으로 절단하며, 제3단계에서 절단된 소재를 트랜스퍼 프레스 공정에 의해 양측 돌출부를 축방향으로 절곡시켜 요크의 형태로 성형하고, 제4단계에서 요크의 양쪽 돌출부에 구멍을 형성하고 중심축상에 추진축과 연결되는 홀을 가공하여 공정을 완료하도록 함을 그 제조 방법상의 기본 특징으로 한다.However, the present invention, as shown in Figures 4 and 5, the blank (4) is formed so that the cylindrical material (1) formed in the first step protrudes to the outer side by a predetermined width through the extrusion process to make a cylindrical shape (4) In the second step, the blank-shaped material is cut laterally so as to have a thickness of about 20 mm, and the material cut in the third step is bent in the axial direction by the transfer pressing process to form a yoke shape. In the fourth step, a hole is formed in both protrusions of the yoke, and a hole is connected to the propulsion shaft on the central axis to complete the process.

이와같이 구성되는 본 발명은, 제1단계에서 원통형으로 형성된 소재(1)가 압출공정에 의해 직경은 축소되고 원주면의 양측에 돌출부가 형성되는 블랭크 형상이 되고, 제2단계에서 블랭크 형상의 소재가 일정간격으로 절단되어 두께가 20mm정도로 되며, 절단된 각각의 소재가 제 3단계에서 프레스공정에 의해 양측 돌출부가 축방향으로 절곡되어 요크 형상으로 성형되며, 제3단계에서 성형된 요크의 하면을 추진축과 연결할 수 있도록 중심축상에 추진축과 연결되는 홀을 형성하는 제 4 단계를 수행하여, 완제품으로 완성된다.In the present invention configured as described above, the material 1 formed in a cylindrical shape in the first step is a blank shape in which the diameter is reduced by the extrusion process and protrusions are formed on both sides of the circumferential surface, and the blank material is formed in the second step. It is cut at regular intervals to have a thickness of about 20 mm, and each cut material is bent in the axial direction by the pressing process in the third step, and is shaped into a yoke shape. The fourth step of forming a hole connected to the propulsion shaft on the central axis so as to connect with the, is completed as a finished product.

한편, 이러한 본 발명은 알루미늄 소재에 의해 형성되므로 그 중량이 경감되고, 종래 제조공정에 비해 열처리 공정이 제거되어 제조공정수가 단축되며, 이로 인해 생산성이 향상되도록 한다.On the other hand, since the present invention is formed of an aluminum material, its weight is reduced, and the number of manufacturing steps is reduced by eliminating the heat treatment process as compared with the conventional manufacturing process, thereby improving productivity.

상기와 같이 구성되고 작동되는 본 발명은, 소재를 압출한 후 프레스 공정에 의해 요크가 제작되도록 되어 전체 제작 공정에서 열처리 공정이 제거되도록 하므로, 생산성이 향상되고 제작 비용이 절감된다. 또한, 열처리 공정에 의하지 않고도 기존의 제품과 동일한 강도의 제품을 얻는 효과를 갖는다.The present invention constructed and operated as described above, the yoke is produced by the press process after the extrusion of the material to be removed the heat treatment process in the entire manufacturing process, thereby improving productivity and reducing the production cost. In addition, it has the effect of obtaining a product of the same strength as the existing product without the heat treatment process.

Claims (1)

압출에 의해 원통형 소재의 양측이 외곽쪽으로 소정폭 돌출되도륵 블랭크 형상을 형성하는 제1단계와, 상기 제1단계에서 블랭크 형상의 소재를 소정 두께가 되도록 횡으로 절단하는 제2단계와, 상기 제2단계에서 절단된 소재를 프레스 공정에 의해 양측 돌출부가 축방향으로 절곡되어 요크 형상으로 성형하는 제 3 단계, 상기 제3단계에서 성형된 요크의 양쪽 돌출부의 단부에 구멍을 형성하고 중심축상에 추진축과 연결되는 홀을 형성하는 제4단계로 이루어짐을 특징으로 하는 자동차 추진축의 요크 제조방법.A first step of forming a blank shape such that both sides of the cylindrical material are extruded to a predetermined width by extrusion; a second step of horizontally cutting the blank material to a predetermined thickness in the first step; The third step of forming the material cut in step 2 by the pressing process both sides of the protrusions in the axial direction to form a yoke shape, forming a hole in the end of both protrusions of the yoke formed in the third step and the driving shaft on the central axis Yoke manufacturing method of the propulsion shaft of the vehicle, characterized in that the fourth step of forming a hole connected with the.
KR1019970033649A 1997-07-18 1997-07-18 Method for manufacturing aluminum yoke of automobile propeller shaft KR100345859B1 (en)

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KR100345859B1 true KR100345859B1 (en) 2002-11-11

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557387A (en) * 1991-09-04 1993-03-09 Showa Alum Corp Manufacture of aluminum product
JPH05161914A (en) * 1991-12-11 1993-06-29 Honda Motor Co Ltd Manufacture of fork member to be connected with damper for suspension device
JPH05185173A (en) * 1992-01-14 1993-07-27 Honda Motor Co Ltd Manufacture of knuckle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0557387A (en) * 1991-09-04 1993-03-09 Showa Alum Corp Manufacture of aluminum product
JPH05161914A (en) * 1991-12-11 1993-06-29 Honda Motor Co Ltd Manufacture of fork member to be connected with damper for suspension device
JPH05185173A (en) * 1992-01-14 1993-07-27 Honda Motor Co Ltd Manufacture of knuckle

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