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1. EP0773853 - METHOD OF MAKING CONNECTING ROD

Office European Patent Office
Application Number 96918113
Application Date 07.06.1996
Publication Number 0773853
Publication Date 21.05.1997
Publication Kind B1
IPC
B23D 31/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
31Shearing machines or shearing devices covered by none or more than one of the groups B23D15/-B23D29/137; Combinations of shearing machines
B23P 15/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
15Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
B22F 5/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
5Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 5/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
5Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B23D 31/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
31Shearing machines or shearing devices covered by none or more than one of the groups B23D15/-B23D29/137; Combinations of shearing machines
B23P 15/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
15Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
CPC
B23P 15/00
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
15Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
B22F 5/003
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
5Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
003Articles made for being fractured or separated into parts
B23D 31/003
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
31Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
002Breaking machines, i.e. pre-cutting and subsequent breaking
003for rings
B23P 2700/04
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
2700Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
04Connecting rods
F16C 7/023
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
7Connecting-rods or like links pivoted at both ends
02Constructions of connecting-rods with constant length
023for piston engines, pumps or the like
F16C 9/045
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
9Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
04Connecting-rod bearings; Attachments thereof
045the bearing cap of the connecting rod being split by fracturing
Applicants CUMMINS ENGINE CO INC
Inventors MYERS MARTIN R
PATTEN JAMES W
BECKER PAUL C
MCINERNEY TERRY M
POTTER DENNIS P
SHORT JAMES M
BIGGERSTAFF PAUL
STEVENS ROBERT
Priority Data 47277395 07.06.1995 US
9608960 07.06.1996 US
Title
(DE) VERFAHREN ZUR HERSTELLUNG EINER PLEUELSTANGE
(EN) METHOD OF MAKING CONNECTING ROD
(FR) PROCEDE DE FABRICATION D'UNE BIELLE
Abstract
(EN)
A method of manufacturing a component formed of parts capable of being separated for reassembly around another component. The process starts by taking separate, e.g., rod (3, 3') and cap (5, 5') forgings and coining or forging them together prior to machining. The mating surfaces of the forgings are formed with a ridge-groove (9) or a dimple/lug-recess (12) configuration giving them a self-locating ability. After machining, the forgings are fractured along the original division to obtain two uniquely matched surfaces that need no further processing before being reassembled, e.g., to form a connecting rod for an internal combustion engine.

(FR)
L'invention a pour objet un procédé de fabrication d'un élément constitué de parties pouvant être séparées pour être ultérieurement ré-assemblées autour d'un autre élément. Ce procédé consiste à prendre des pièces forgées séparées, par exemple une bielle (3, 3') et un chapeau (5, 5') pour les forger ou les emboutir ensemble avant de les usiner. Les surfaces correspondantes des pièces forgées présentent une configuration de type arête-rainure (9) ou bosse/évidement-oeillet (12), ce qui leur permet de s'auto-positionner. Après l'usinage, les pièces forgées sont fracturées le long de leur division initiale pour donner deux pièces correspondantes uniques ne nécessitant pas d'autre traitement avant leur ré-assemblage, par exemple, pour former une bielle pour un moteur à combustion interne.