Manufacturing method for bearing device, and bearing device
AssigneeJtekt Corporation
InventorAkira KITAGAWA
Life of this patent
Estimating the term…
Abstract
A manufacturing method for a bearing device includes a first coating process of applying a coating all over an outer ring member solely, a removal process of, after the first coating process, removing part of the coating by machining the outer ring member for forming an outer raceway surface with which rolling elements come into rolling contact, an assembling process of assembling the coated outer ring member, an inner shaft member, the rolling elements, and a cage into an assembly, and a second coating process of applying a coating to a required portion of the inner shaft member in the assembly.
Claims6
A manufacturing method for a bearing device including an inner shaft member, an outer ring member that has cylindrical shape and is provided on an outer side of the inner shaft member in a radial direction, a plurality of rolling elements that are provided between the inner shaft member and the outer ring member, and a cage that holds the plurality of rolling elements, the manufacturing method comprising:
- a first coating process of applying a coating solely all over a first member that is one of the inner shaft member and the outer ring member;
- a removal process of, after the first coating process, removing part of the coating by machining the first member for forming a raceway surface for rolling contact with the rolling elements;
- an assembling process of assembling the coated first member, a second member, the rolling elements, and the cage into an assembly, the second member being the other one of the inner shaft member and the outer ring member;
- and
- a second coating process of applying a coating to a required portion of the second member in the assembly.
A bearing device comprising:
- an inner shaft member;
- a outer ring member that has cylindrical shape and is provided on an outer side of the inner shaft member in a radial direction;
- a plurality of rolling elements provided between the inner shaft member and the outer ring member;
- and
- a cage that holds the plurality of rolling elements, wherein:
- the inner shaft member includes an inner shaft, an inner ring that has annular shape, and a clinch portion;
- the inner shaft includes a flange at one side in an axial direction and a cylindrical portion that extends from the flange further toward the one side in the axial direction;
- the inner ring is mounted at the other side of the inner shaft in the axial direction;
- the clinch portion is part of the inner shaft at the other side in the axial direction and is provided to prevent the inner ring from coming off to the other side in the axial direction;
- in the outer ring member, a raceway surface with which the rolling elements are in rolling contact is a metal surface, and an outer periphery is a coated surface;
- and
- in the inner shaft member, a coating is applied to a portion at one side in the axial direction, including the flange and the cylindrical portion, and a raceway surface with which the rolling elements are in rolling contact, a surface of the inner ring, and a surface of the clinch portion are metal surfaces.
Dependencies are inferred from the claim text.