STRUCTURE OF COUNTER SUNK PORTION OF CONNECTING ROD

PURPOSE:To increase reliability and durability of a connecting rod by removing a portion of stress concentration through forming a smooth fillet at a counter sunk portion, and through giving cold reinforcing process. CONSTITUTION:A fillet 5b at a counter sunk portion 5a of an upper half 5 of a large...

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Bibliographische Detailangaben
Hauptverfasser:	SHIMAMOTO TOSHIRO, YAMAGUCHI TOSHIHIRO, MIZOGUCHI HIROSHIGE
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To increase reliability and durability of a connecting rod by removing a portion of stress concentration through forming a smooth fillet at a counter sunk portion, and through giving cold reinforcing process. CONSTITUTION:A fillet 5b at a counter sunk portion 5a of an upper half 5 of a large end of a connecting rod is machined so as to have a curved surface, and is treated by surface hardening process through cold working using a fillet rolling tool 11. Consequently, the fillet 5b at the counter sunk portion 5a becomes a smooth surface, and a portion in danger of stress concentration is removed from the counter sunk portion 5a. By this constitution, it is possible to increase reliability and durability of the connecting rod, owing to increase of its strength.