US 9,446,492 B2Granted

Processing apparatus and processing method

AssigneeNtn Corporation

InventorsSatoshi Fujimoto, Satoshi Sugitatsu, Masashi Kitai

Life of this patent

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Abstract

A processing apparatus includes two feed drums, each having an outer periphery formed with a spirally extending threaded guide surface and adapted to be driven to rotate, disposed so as to extend parallel to each other, and the feed drums are used to pass a roller through between the feed drums by the rotation thereof while the roller is caused to rollingly contact the mutually opposed threaded guide surface, and also includes a grinding stone for processing a crowned portion of the roller passing thorough between the feed drums. The threaded guide surface of the feed drums is divided into two axially juxtaposed divided threaded surface areas so that an outer peripheral surface of the roller can be supported at two anteroposterior locations.

Claims7

Dependent claims

A processing apparatus for processing a crowned portion of a roller, which apparatus comprises:

first and second feed drums each having an outer periphery formed with respective spirally extending threaded guide surfaces, the first and second feed drums extending parallel to each other and being driven to rotate about respective central axes to transport the roller, while the roller is held in rolling contact with the threaded guide surfaces opposed to each other, from a first location towards a second location through between the first and second feed drums;
and
a grinding stone for processing the crowned portion of the roller passing through between the first and second feed drums;
and
in which the threaded guide surface of the first and second feed drums is divided into two axially juxtaposed divided threaded surface areas so that an outer peripheral surface of the roller is supported at only two anteroposterior locations of the roller.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/822,370Filed 8 Sep 2011
Priority: JP 2010-20878917 Sep 2010
Published: US 2013/0171914 A14 Jul 2013
Granted: 20 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B24B 5/04
Involving centres or chucks for holding work: for grinding cylindrical surfaces externally
B24B 5/245
For grinding conical surfaces: for mass articles
B24B 19/06
For grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements: for grinding races, e.g. roller races
F16C 33/366
With bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces: tapered rollers, i.e. rollers generally shaped…