EP1348501A1 - Procédé de fabrication d'une bielle forgée et outillage pour la mise en oeuvre de ce procédé - Google Patents
Procédé de fabrication d'une bielle forgée et outillage pour la mise en oeuvre de ce procédé Download PDFInfo
- Publication number
- EP1348501A1 EP1348501A1 EP03290765A EP03290765A EP1348501A1 EP 1348501 A1 EP1348501 A1 EP 1348501A1 EP 03290765 A EP03290765 A EP 03290765A EP 03290765 A EP03290765 A EP 03290765A EP 1348501 A1 EP1348501 A1 EP 1348501A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- connecting rod
- rod
- head
- foot
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
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
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/766—Connecting rods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
- on forme l'ébauche par découpage transversal d'un profilé présentant une section transversale correspondant au profil de ladite ébauche,
- on effectue dans un jeu de matrices une étape de finition par une répartition de la matière longitudinalement, transversalement et en épaisseur de l'ébauche pour obtenir une bielle brute sans bavure, et
- on réalise un alésage dans la tête et un alésage dans le pied de la bielle brute pour obtenir la bielle forgée.
- le jeu de matrices comprend une matrice inférieure comportant une empreinte fermée et une matrice supérieure formant poinçon et coulissant dans la matrice inférieure avec un jeu compris entre 0,3 et 0,05mm,
- l'empreinte de la matrice inférieure et la matrice supérieure présentent des rayons de raccordement des faces compris entre 0,5 et 1,5mm.
- l'empreinte de la matrice inférieure présente une pente d'éjection comprise entre 0,5 et 3°.
- la Fig. 1 est une vue de dessus d'une bielle forgée,
- la Fig. 2 est une vue schématique en coupe selon la ligne 2-2 de la Fig. 1,
- la Fig. 3 est une vue schématique en perspective d'une ébauche de bielle,
- la Fig. 4 est une vue schématique en perspective d'un profilé à partir duquel sont formées les ébauches de bielle,
- la Fig. 5 est une vue schématique en perspective des ébauches de bielles obtenues à partir du profilé,
- la Fig. 6 est une vue schématique en coupe verticale d'un jeu de matrices d'un outillage pour réaliser une bielle brute,
- la Fig. 7 est une vue schématique de dessous de la matrice supérieure du jeu de matrices,
- la Fig. 8 est une vue de dessus de la matrice inférieure du jeu de matrices.
Claims (8)
- Procédé de fabrication d'une bielle forgée (1) à partir d'une ébauche (10) comportant une tête (11), un corps (12) et un pied (13), caractérisé en ce que :on forme l'ébauche (10) par découpage transversal d'un profilé (15) présentant une section transversale correspondant au profilé de ladite ébauche (10),on effectue dans un jeu de matrices (20) une étape de finition par une répartition de la matière longitudinalement, transversalement et en épaisseur de l'ébauche pour obtenir une bielle brute sans bavure, eton réalise un alésage (3) dans la tête et un alésage (7) dans le pied de la bielle brute pour obtenir la bielle forgée (1).
- Procédé selon la revendication 1, caractérisé en ce que l'on chauffe l'ébauche (10) à une température comprise entre 0 et 1250°C.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que les alésages (3, 7) de la tête et du pied sont réalisés sur une presse à estamper ou par usinage avec un outil à défoncer.
- Outillage de fabrication d'une bielle forgée (1) pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il comprend, en outre, un jeu de matrices (20) de finition par une répartition de la matière longitudinalement, transversalement et en épaisseur d'une ébauche (10) de bielle comportant une tête, un corps et un pied pour obtenir une bielle brute sans bavure.
- Outillage selon la revendication 4, caractérisé en ce que le jeu de matrices (20) comprend une matrice inférieure (21) comportant une empreinte (22) fermée et une matrice supérieure (23) formant poinçon et coulissant dans la matrice inférieure (21) avec un jeu compris entre 0,3 et 0,05mm.
- Outillage selon la revendication 4 ou 5, caractérisé en ce que l'empreinte (22) de la matrice inférieure (21) et la matrice supérieure (23) présentent des rayons de raccordement des faces compris entre 0,5 et 1,5mm.
- Outillage selon l'une quelconque des revendications 4 à 6, caractérisé en ce que l'empreinte (22) de la matrice inférieure (21) présente une pente d'éjection comprise entre 0,5 et 3°.
- Bielle forgée pour moteur à combustion interne, caractérisée en ce qu'elle est obtenue par le procédé selon l'une quelconque des revendications 1 à 3.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0204035A FR2837731B1 (fr) | 2002-03-29 | 2002-03-29 | Procede de fabrication d'une bielle forgee et outillage pour la mise en oeuvre de ce procede |
FR0204035 | 2002-03-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1348501A1 true EP1348501A1 (fr) | 2003-10-01 |
EP1348501B1 EP1348501B1 (fr) | 2006-11-29 |
Family
ID=27799296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03290765A Expired - Lifetime EP1348501B1 (fr) | 2002-03-29 | 2003-03-26 | Procédé de fabrication d'une bielle forgée et outillage pour la mise en oeuvre de ce procédé |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1348501B1 (fr) |
AT (1) | ATE346703T1 (fr) |
DE (1) | DE60309950T2 (fr) |
ES (1) | ES2276024T3 (fr) |
FR (1) | FR2837731B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102338151A (zh) * | 2010-07-19 | 2012-02-01 | 江海青 | 铝制连杆制造新方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0459147A (ja) * | 1990-06-27 | 1992-02-26 | Kubota Corp | コネクティングロッドの鍛造成形方法 |
DE4329371A1 (de) * | 1993-09-01 | 1995-03-09 | Brockhaus Soehne Gmbh & Co Kg | Verfahren zur Herstellung von Pleuelstangen durch gratloses Schmieden |
US5544413A (en) * | 1994-06-10 | 1996-08-13 | Omni Forge, Inc. | Method and apparatus for manfacturing a flashless metal connecting rod |
JPH11147157A (ja) * | 1997-11-11 | 1999-06-02 | Honda Motor Co Ltd | 穴明き製品及びコンロッドの成形方法 |
US6151948A (en) * | 1999-02-26 | 2000-11-28 | Msp Industries Corporation | Methods and apparatuses for producing complex-shaped metal parts by forging |
-
2002
- 2002-03-29 FR FR0204035A patent/FR2837731B1/fr not_active Expired - Fee Related
-
2003
- 2003-03-26 AT AT03290765T patent/ATE346703T1/de not_active IP Right Cessation
- 2003-03-26 EP EP03290765A patent/EP1348501B1/fr not_active Expired - Lifetime
- 2003-03-26 DE DE60309950T patent/DE60309950T2/de not_active Expired - Lifetime
- 2003-03-26 ES ES03290765T patent/ES2276024T3/es not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0459147A (ja) * | 1990-06-27 | 1992-02-26 | Kubota Corp | コネクティングロッドの鍛造成形方法 |
DE4329371A1 (de) * | 1993-09-01 | 1995-03-09 | Brockhaus Soehne Gmbh & Co Kg | Verfahren zur Herstellung von Pleuelstangen durch gratloses Schmieden |
US5544413A (en) * | 1994-06-10 | 1996-08-13 | Omni Forge, Inc. | Method and apparatus for manfacturing a flashless metal connecting rod |
JPH11147157A (ja) * | 1997-11-11 | 1999-06-02 | Honda Motor Co Ltd | 穴明き製品及びコンロッドの成形方法 |
US6151948A (en) * | 1999-02-26 | 2000-11-28 | Msp Industries Corporation | Methods and apparatuses for producing complex-shaped metal parts by forging |
Non-Patent Citations (3)
Title |
---|
DOEGE E ET AL: "UMFORMTECHNIK, MEISENBACH, BAMBERG, DE", UMFORMTECHNIK, MEISENBACH, BAMBERG, DE, vol. 34, no. 4, December 2000 (2000-12-01), pages 42 - 44,46, XP000975788, ISSN: 0300-3167 * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 248 (M - 1261) 5 June 1992 (1992-06-05) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30) * |
Also Published As
Publication number | Publication date |
---|---|
DE60309950D1 (de) | 2007-01-11 |
FR2837731A1 (fr) | 2003-10-03 |
ES2276024T3 (es) | 2007-06-16 |
DE60309950T2 (de) | 2007-09-20 |
ATE346703T1 (de) | 2006-12-15 |
EP1348501B1 (fr) | 2006-11-29 |
FR2837731B1 (fr) | 2004-10-01 |
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