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US 12,209,614 B2Granted
Bearing element manufacturing method, bearing manufacturing method, machine manufacturing method, vehicle manufacturing method, bearing element, bearing, machine, and vehicle
AssigneeNsk Ltd.
InventorsKouhei Mori, Mizuki Watanabe, Isao Shintou, Hiroshi Koyama
Life of this patent
Estimating the term…
Abstract
A first piece (13) includes a first ring portion (13b) and a second ring portion (13c) which are arranged side by side in an axial direction and an inner diameter and an outer diameter of the first ring portion (13b) are respectively larger than an inner diameter and an outer diameter of the second ring portion (13c). A second piece (16) is obtained by pressing the first piece (13) while the first piece (13) is disposed between a first set and a second set.
Claims9
A bearing element manufacturing method comprising:
- a first step of preparing a first piece having a predetermined shape, the predetermined shape including a first ring portion and a second ring portion arranged side by side in an axial direction, an inner diameter and an outer diameter of the first ring portion being respectively larger than an inner diameter and an outer diameter of the second ring portion;
- a second step of obtaining a second piece by processing the first piece, the second piece including a third ring portion corresponding to the first ring portion and a fourth ring portion corresponding to the second ring portion;
- and
- a third step of obtaining a first ring element and a second ring element separated from each other, the first ring element corresponding to the third ring portion, the second ring element corresponding to the fourth ring portion,
- wherein the second step includes:
- preparing a first set including a first member and a second member disposed inside the first member;
- preparing a second set including a third member and a fourth member disposed inside the third member;
- disposing the first member and the second member at the inside of a die and at a first side of the die in an axial direction;
- disposing the third member and the fourth member at the inside of the die and at a second side of the die in the axial direction;
- and
- deforming the first piece by relatively moving the first set in the axial direction with respect to the second set and by bringing the first piece to come into contact with (i) a surface facing the second side in the first member, (ii) a surface facing the second side in the second member, (iii) a surface facing the first side in the third member, (iv) a surface facing the first side in the fourth member, and (v) a surface facing the first side in the die, while the first piece is disposed between the first set and the second set in the axial direction, and
- wherein the deformation of the first piece includes forming an axial surface by deforming a part of the first piece in the axial direction using the surface facing the second side in the first member.
9 more elements
A bearing element manufacturing method comprising:
- a first step of preparing a first piece having a predetermined shape, the predetermined shape including a first ring portion and a second ring portion arranged side by side in an axial direction, an inner diameter and an outer diameter of the first ring portion being respectively larger than an inner diameter and an outer diameter of the second ring portion;
- a second step of obtaining a second piece by processing the first piece, the second piece including a third ring portion corresponding to the first ring portion and a fourth ring portion corresponding to the second ring portion;
- and
- a third step of obtaining a first ring element and a second ring element separated from each other, the first ring element corresponding to the third ring portion, the second ring element corresponding to the fourth ring portion,
- wherein the second step includes:
- preparing a first set including a first member and a second member disposed inside the first member;
- preparing a second set including a third member and a fourth member disposed inside the third member;
- disposing the first member and the second member at the inside of a die and at a first side of the die in an axial direction;
- disposing the third member and the fourth member at the inside of the die and at a second side of the die in the axial direction;
- and
- deforming the first piece by relatively moving the first set in the axial direction with respect to the second set and by bringing the first piece to come into contact with (i) a surface facing the second side in the first member, (ii) a surface facing the second side in the second member, (iii) a surface facing the first side in the third member, (iv) a surface facing the first side in the fourth member, and (v) a surface facing the first side in the die, while the first piece is disposed between the first set and the second set in the axial direction, and
- wherein, in the deformation of the first piece, the surface facing the second side in the second member is disposed between the surface facing the first side in the third member and the surface facing the first side in the fourth member in the axial direction.
9 more elements
Dependencies are inferred from the claim text.