CLUTCH-PLATE HOLDING CYLINDRICAL PART AND PRESS MOLDING METHOD THEREFOR

An object of the present invention is to extend a retention time of clutch oil and enable to efficiently cool clutch plates. A clutch hub (42) which is engaged with the clutch plates in an outer circumference is a press-molding article made from one steel sheet. In its inner circumferential surface,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WATANABE, Daichi, SUZUKI, Ryosuke, NEZU, Hideyuki, MIWA, Masamichi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	An object of the present invention is to extend a retention time of clutch oil and enable to efficiently cool clutch plates. A clutch hub (42) which is engaged with the clutch plates in an outer circumference is a press-molding article made from one steel sheet. In its inner circumferential surface, plural oil grooves (74-4) for cooling the clutch plates, which are extended to a shat direction and have a space in a circumferential direction. Each of dams (76) as a press-molding portion extending to radial inward is formed at an end portion of each of the oil groove (74-4) . The press-molding of the dams (76) is performed by pressing a front surface side of the clutch hub (42) by punches (82) and disposing inner pressing tools (84) at a back surface side. The dams (76) comprise an upright front surface (76-1) and a back surface (76-2), which are a molding surface molded by using the molding tools. The back surface (76-2) has a steep shape as long as attaching and detaching inner pressing tools (84) is not prevented. Thereby, the retention time of the clutch oil in the oil grooves (74-4) can be extended and cooling efficiency of the clutch plates can be enhanced.