APPARATUS AND PROCESS FOR PRODUCING BLANKS OF RINGS OR TUBULAR MEMBERS

A process for producing bearing ring blanks, or gearwheel ring blanks, or tubular connection-member blanks, comprises the steps of:a) providing a steel tube;b) dividing the tube into a plurality of slugs each having an axial through cavity;c) supplying the slugs to a die assembly of a cold-forming s...

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Bibliographische Detailangaben
1. Verfasser:	Salvadori, Giuseppe
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BEARINGS BLASTING BROACHING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FILING FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR MACHINE TOOLS MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PLANING PUNCHING METAL ROTARY BODIES OTHER THAN GEARING ELEMENTS SAWING SCRAPING SHAFTS SHEARING SLOTTING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A process for producing bearing ring blanks, or gearwheel ring blanks, or tubular connection-member blanks, comprises the steps of:a) providing a steel tube;b) dividing the tube into a plurality of slugs each having an axial through cavity;c) supplying the slugs to a die assembly of a cold-forming station, the forming station including a punch assembly; andd) subjecting the slugs to contained forward extrusion through the die assembly, wherein the thrust imparted by a pushing member of the punch assembly on a subsequent slug causes passage of a preceding slug through the die assembly, with deformation thereof into a blank, while a restraining member of the punch assembly occupies the axial cavity of the subsequent slug and at least part of the axial cavity of the preceding slug.