KR970073791A - Cold forging molding method of automotive clutch hub - Google Patents

Cold forging molding method of automotive clutch hub Download PDF

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Publication number
KR970073791A
KR970073791A KR1019960017064A KR19960017064A KR970073791A KR 970073791 A KR970073791 A KR 970073791A KR 1019960017064 A KR1019960017064 A KR 1019960017064A KR 19960017064 A KR19960017064 A KR 19960017064A KR 970073791 A KR970073791 A KR 970073791A
Authority
KR
South Korea
Prior art keywords
punch
diameter
inner diameter
die
forming
Prior art date
Application number
KR1019960017064A
Other languages
Korean (ko)
Inventor
임기현
Original Assignee
임기현
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 임기현 filed Critical 임기현
Priority to KR1019960017064A priority Critical patent/KR970073791A/en
Priority to ES009602257A priority patent/ES2150322B1/en
Priority to FR9614387A priority patent/FR2748677A1/en
Publication of KR970073791A publication Critical patent/KR970073791A/en

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Classifications

    • 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
    • B21K23/00—Making other articles
    • B21K23/04—Making other articles flanged articles
    • 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
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/40—Making machine elements wheels; discs hubs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
    • B21J1/025—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough affecting grain orientation
    • 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
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • 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
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth

Abstract

자동차용 클러치 허브는 인발봉을 절삭하여 제조하고 있으나 우선 절삭 기능이 낮은 경우 작업자에 따라 오차가 많으며 금속조직(metal flow)이 단절되어 강도가 약해진다. 따라서 본 발명자는 1991-1931호 특허출원에서 냉간단조 성형법을 외형성형에서 시작하여 내부를 성형하는 방법을 제시하였으나 외부치형이 변형되어 오차가 큰 단점이 있었다.본 발명은 인발봉을 대략적인형으로 외형으로 형성한 후, 내경을 선단막(11)만을 남기도록 성형하고 이어서 선단막만을 피어싱 펀치로 제거한 다음 최종적으로 비대칭의 외형치형과 토오숀스프링 장착홈을 형성함으로써 금속 조직이 그대로 잔류한 채 강한 내구성을 갖으며 고정밀성의 클러치 허브를 성형하게 되었다.Although the clutch hub for automobile is manufactured by cutting the pull rod, when the cutting function is low, there are many errors according to the operator and the metal flow is cut off and the strength is weakened. Therefore, the present inventor has proposed a method of forming the inside of a cold forging forming process from the outer shaping process in the patent application of 1991-1931, but the outer tooth profile is deformed to have a large error. The inner diameter is formed so as to leave only the top end film 11, then only the top end film is removed with a piercing punch, and finally the asymmetric outer tooth profile and the tooth spring mounting groove are formed, The clutch hub with high durability and high precision is formed.

Description

자동차 클러치 허브의 냉간단조 성형방법Cold forging molding method of automotive clutch hub

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제 1도는 본 발명의 단조성형시 목적물 변형과정의 설명도, 제 2도 (가)(나)는 본 발명의 제품과 종래 제품의 메탈플로우 단면도, 제 3도는 본 발명의 외형성형과정의 단면도, 제 4도는 본 발명의 내경성형과정의 단면도.FIG. 2 is a sectional view of a metal flow of a product of the present invention and a conventional product, FIG. 3 is a cross-sectional view of an outer molding process of the present invention, FIG. 4 is a sectional view of the inner diameter forming process of the present invention.

Claims (2)

원통형의 길게 인발된 탄소강이나 몰리브덴강을 일정 크기로 절단한 원통형 피가공물(1)을 록크웰 경도 75 이하로 연화시켜 준 다음 턱부(2)가 중간에 형성되어 있고 상반부는 지름이 하반부보다 넓게 형성된 외형성형금형(3)을 안치 후 프레스되는 단면이 원형인 외형가공 펀치(4)를 펀치홀더(5)에 고정시켜 17톤/㎠ 이상의 압력으로 프레싱처리하여 원통형 피 가공물이 상반부가 넓은자형으로 성형토록 하는 외형 성형공정,형으로 완성된 1차피가공물(1)을 발출한 다음 제 2펀치 다이(6)와 2단의 단(7)이 순차적으로 지름폭을 달리 하도록 형성된 내경펀치(8)를 펀치 케이스(9)에 조립하여 내경(10)이 형성될 수 있는 압력으로 프레싱하여 선단막(11)만을 남겨놓는 내경성형공정, 제 2펀치다이(6)와 내경펀치(8)를 제거하고 중앙에 내경(10)의 지름(r)보다 약간 큰 지름을 갖는 중공부(12)가 형성된 제 3펀치다이(13)를 하측다이부에 배치하고, 내경(10)의 지름(r) 약간 작음 지름을 갖는 피어싱펀치(14)를 펀치케이스(9)에 조립한 다음 내경(10)의 내주면(10a)에 펀치가 닿지 않도록 서서히 하강시켜주어 선단막(11)을 중공부(12)로 밀어내는 부싱 성형공정, 피어싱펀치(14)와 제 2펀치다이(6)를 제거하고 상반부에 치형캐비티(20)가 형성된 치형성형금형(15)을 펀치 다이에 배치하고, 중앙하부에는 에어 홀(17)이 형성된 제 3펀치다이(16)를 배치하며, 펀치케이스(9)에는 치형성형 아우터펀치(18)를 조립하여 주어 12톤/㎠이상의 압력으로 1-3초간 가압처리하는 치형 정밀 성형공정으로 구성되는 자동차 클러치 허브의 성형방법.A cylindrical work piece 1 obtained by cutting a cylindrical long drawn carbon steel or molybdenum steel to a predetermined size is softened to a Rockwell hardness of 75 or less and then a jaw portion 2 is formed in the middle and an upper half portion is formed with a diameter larger than the lower half The contouring machining punch 4 having a circular cross section and being pressed after the contouring mold 3 is fixed to the punch holder 5 and pressed at a pressure of 17 ton / cm 2 or more, so that the cylindrical workpiece has a wider upper half An outer mold forming step of molding the mold into a shape, Diameter punch 8 formed in such a manner that the second punch die 6 and the two-stepped end 7 are sequentially made to have different diameters, The inner punch die 6 and the inner punch 8 are removed and the inner diameter 10 of the inner diameter 10 is removed at the center by pressing the inner diameter 10 with a pressure capable of forming the inner diameter 10, A third punch die 13 having a hollow portion 12 having a diameter slightly larger than the diameter r is disposed on the lower die portion and a piercing punch 14 having a diameter r of the inner diameter 10 and a slightly smaller diameter A bushing forming process of assembling the punch 10 into the punch case 9 and gradually lowering the inner circumferential surface 10a of the inner diameter 10 so as not to touch the punch to push the leading end film 11 to the hollow portion 12, 14 and the second punch die 6 are removed and the tooth forming mold 15 in which the tooth cavity 20 is formed in the upper half is disposed in the punch die, And a third punch die 16 having a hole 17 formed therein and the punch case 9 is provided with a toothed forming punch 18 and a toothed precision punch 18 for pressurizing for 1 to 3 seconds at a pressure of 12 ton / A molding method for an automotive clutch hub comprising a molding process. 제 1항에 있어서, 6치형 정밀 성형은 캐비티(20)와 돌출부(21)가 비대칭으로 구성되어져 비대칭의 치형과 토오숀스프링 장착홈을 함께 성형하는 것을 특징으로 하는 자동차 클러치 허브의 냉간단조 성형방법.The method according to claim 1, characterized in that the cavity (20) and the protrusion (21) are formed asymmetrically so that the asymmetric tooth profile and the torsion spring mounting groove are formed together . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960017064A 1996-05-20 1996-05-20 Cold forging molding method of automotive clutch hub KR970073791A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019960017064A KR970073791A (en) 1996-05-20 1996-05-20 Cold forging molding method of automotive clutch hub
ES009602257A ES2150322B1 (en) 1996-05-20 1996-10-25 COLD FORGING PROCEDURE FOR THE MANUFACTURE OF CLUTCH BUSHINGS FOR AUTOMOBILE VEHICLES.
FR9614387A FR2748677A1 (en) 1996-05-20 1996-11-25 Method of cold forging motor vehicle clutch components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960017064A KR970073791A (en) 1996-05-20 1996-05-20 Cold forging molding method of automotive clutch hub

Publications (1)

Publication Number Publication Date
KR970073791A true KR970073791A (en) 1997-12-10

Family

ID=19459260

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960017064A KR970073791A (en) 1996-05-20 1996-05-20 Cold forging molding method of automotive clutch hub

Country Status (3)

Country Link
KR (1) KR970073791A (en)
ES (1) ES2150322B1 (en)
FR (1) FR2748677A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101223282B1 (en) * 2010-08-11 2013-01-18 대승정밀 주식회사 The apparatus and method for producting hub of clutch transmission
KR20150134787A (en) * 2014-05-23 2015-12-02 일광금속 유한회사 Coupler producting method for mdps
CN110216232A (en) * 2018-03-01 2019-09-10 上海汽车变速器有限公司 The monoblock type conjunction gear gear forging technique of conjunction gear is shaped after first punching

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0027101D0 (en) 2000-11-07 2000-12-20 Alcon Components Ltd Improvement in clutches

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713277A (en) * 1950-09-02 1955-07-19 Mullins Mfg Corp Method of cold forming ring gears
US3688549A (en) * 1970-08-14 1972-09-05 Toyota Motor Co Ltd Process for cold plastic forming of spaced tooth-like projections on a ring or similarly shaped member
JPH0729171B2 (en) * 1987-02-05 1995-04-05 株式会社横山製作所 Manufacturing method of toothed product with boss
FR2654025B1 (en) * 1989-11-07 1994-06-03 Perrier Jean PROCESS AND TOOLS FOR COLD FORGING OF TOOTHED PINIONS.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101223282B1 (en) * 2010-08-11 2013-01-18 대승정밀 주식회사 The apparatus and method for producting hub of clutch transmission
KR20150134787A (en) * 2014-05-23 2015-12-02 일광금속 유한회사 Coupler producting method for mdps
CN110216232A (en) * 2018-03-01 2019-09-10 上海汽车变速器有限公司 The monoblock type conjunction gear gear forging technique of conjunction gear is shaped after first punching

Also Published As

Publication number Publication date
ES2150322B1 (en) 2001-05-16
ES2150322A1 (en) 2000-11-16
FR2748677A1 (en) 1997-11-21

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