A PLANET CARRIER AND A PROCESS AND APPARATUS TO MANUFACTURE IT

The present invention is directed to an integral planet carrier with no joints, a method of manufacturing it and an apparatus for doing so. Such integrally manufactured components have better strength than a conventionally produced multi-piece jointed planet carriers or integral planet carriers made...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KHASNIS, Vijaykumar Hanumant, KALYANI, Basavraj Prabhakar, TAKALE, Madan Umakant, SATPUTE, Ramdas Dnyandev, KALYANI, Babasaheb Neelkanth
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BLASTING ENGINEERING ELEMENTS AND UNITS FORGE FURNACES FORGING GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAMMERING HEATING LIGHTING MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING 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:	The present invention is directed to an integral planet carrier with no joints, a method of manufacturing it and an apparatus for doing so. Such integrally manufactured components have better strength than a conventionally produced multi-piece jointed planet carriers or integral planet carriers made from casting process. The present invention provides a hot forging process which can be used for the manufacturing of the planet carrier. The manufacturing process comprises of forward extrusion of a billet followed by backward extrusion. This is followed by bending operation, which is in turn followed by a flattening operation. Post-forging heat treatment and other treatments such as shot blasting follow. Finally machining is carried out to arrive at the final integrally formed planet carrier. The forward extrusion, backward extrusion, bending and flattening operations are done on a press or hammer having sufficient energy and load capacity. Preferably these operations are performed on a hydraulic press in order to achieve the required accuracy and precision.