Method of making an engine crankshaft

A method of manufacturing a crankshaft 10 comprises casting in place a hollow steel tube 18 into the crankshaft 10 and laser piercing bores 32 in at least the crank pins of the crankshaft to connect with the interior of the steel tube 18. Laser piercing avoids the risk of blockage of the oil duct by...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MASCARENAS, PAUL A
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CLADDING OR PLATING BY SOLDERING OR WELDING COMBINED OPERATIONS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS POWDER METALLURGY ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS SOLDERING OR UNSOLDERING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method of manufacturing a crankshaft 10 comprises casting in place a hollow steel tube 18 into the crankshaft 10 and laser piercing bores 32 in at least the crank pins of the crankshaft to connect with the interior of the steel tube 18. Laser piercing avoids the risk of blockage of the oil duct by the burrs which would result from conventional drilling.