Assembling method and assembling device for hub bearing

Patent metadata

Field	Value
Publication number	US-12006983-B2
Application number	US-202118026214-A
Country	US
Kind code	B2
Filing date	Aug 27, 2021
Priority date	Sep 23, 2020
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

To obtain a second assembly, first, an outer ring and first roller cassette of a first assembly are supported by a first support tool and a hub wheel of the first assembly is supported by a second support tool, and then the second support tool is moved upward, so that a roller support surface of the second support tool is introduced to the inside of the first roller cassette in the radial direction. Then, after a first seal member is attached to the outer ring, the second support tool is moved downward in accordance with the re-insertion of a cylindrical portion of the hub wheel into the inner periphery of the outer ring, so that a first inner raceway surface is inside of the first roller cassette in the radial direction while the roller support surface is ejected to the lower side of the first roller cassette.

First claim

The invention claimed is:

1. An assembling method for a hub bearing including
an outer ring having an inner peripheral surface on which a first outer raceway surface and a second outer raceway surface are formed,
an inner ring having an outer peripheral surface on which a second inner raceway surface facing the second outer raceway surface is formed,
a hub wheel integrally having a cylindrical portion having an outer peripheral surface on which a first inner raceway surface facing the first outer raceway surface is formed, and a flange that is provided on one side of the first inner raceway surface in an axial direction,
a roller cassette including a plurality of tapered rollers that are interposed between the first outer raceway surface and the first inner raceway surface and a cage that holds the plurality of tapered rollers at predetermined circumferentially spaced intervals, and
a seal member that seals an opening at one end of the outer ring in the axial direction, the assembling method comprising:
a first step for obtaining a first assembly in which the outer ring, the hub wheel, and the roller cassette are combined; and
a second step for obtaining a second assembly in which the first assembly and the seal member are combined,
wherein, in the second step,
the outer ring and roller cassette of the first assembly in a vertical orientation with the outer ring below the flange of the hub wheel are supported from below by a first support tool and the cylindrical portion of the hub wheel of the first assembly is supported from below by a second support tool that can be raised and lowered relative to the first support tool while being restricted from separating from the first support tool,
then the second support tool is moved upward relative to the first support tool in accordance with the separation of the hub wheel from the first assembly that is in the vertical orientation, so that a cylindrical roller support surface provided on the second support tool is introduced to an inside of the roller cassette in a radial direction, and
then, after the seal member is attached to the outer ring, the second support tool is moved downward relative to the first support tool in accordance with the re-insertion of the cylindrical portion of the hub wheel into an inner periphery of the outer ring, so that the first inner raceway surface is introduced to the inside of the roller cassette in the radial direction while the roller support surface is ejected below the roller cassette.

2. The assembling method for a hub bearing according to claim 1 , wherein the second support tool is vertically moved relative to the first support tool by expansion and contraction deformation of an elastic member that is interposed between the first support tool and the second support tool.

3. The assembling method for a hub bearing according to claim 1 , wherein the first support tool supports the roller cassette from below by supporting the cage without supporting the plurality of tapered rollers.

4. An assembling device for a hub bearing including
an outer ring having an inner peripheral surface on which a first outer raceway surface and a second outer raceway surface are formed,
an inner ring having an outer peripheral surface on which a second inner raceway surface facing the second outer raceway surface is formed,
a hub wheel integrally having a cylindrical portion having an outer peripheral surface on which a first inner raceway surface facing the first outer raceway surface is formed, and a flange that is provided on one side of the first inner raceway surface in an axial direction,
a roller cassette including a plurality of tapered rollers that is interposed between the first outer raceway surface and the first inner raceway surface and a cage that holds the plurality of tapered rollers at predetermined circumferentially spaced intervals, and
a seal member that seals an opening at one end of the outer ring in the axial direction, the assembling device comprising:
a first support tool that supports, from below, the outer ring and the cage of the roller cassette but does not support the plurality of tapered rollers of a first assembly in which the outer ring, the hub wheel, and the roller cassette are combined in a vertical orientation with the outer ring below the flange of the hub wheel; and
a second support tool that can be raised and lowered relative to the first support tool while being restricted from separating from the first support tool, and supports, from below, the cylindrical portion of the hub wheel but does not support the plurality of tapered rollers of the first assembly that is in the vertical orientation,
wherein the second support tool is moved upward relative to the first support tool in accordance with the separation of the hub wheel from the first assembly that is in the vertical orientation, until a cylindrical roller support surface provided on an outer peripheral surface of the second support tool is disposed radially inward of the roller cassette, and the second support tool is moved downward relative to the first support tool in accordance with the re-insertion of the cylindrical portion of the hub wheel into an inner periphery of the outer ring so that the roller support surface is ejected below the roller cassette.

Assignees

• Ntn Toyo Bearing Co Ltd

Inventors

• Yamashita Tatsuto
• Sawada Tomoaki

Classifications

• F16C2326/02

  Wheel hubs or castors · CPC title

• F16C43/045

  Mounting or replacing seals · CPC title

• F16C19/388

  with four rows, i.e. four row tapered roller bearings · CPC title

• F16C19/386

  in O-arrangement · CPC title

• F16C43/06 Primary

  Placing rolling bodies in cages or bearings · CPC title