JP2017048873A5 - - Google Patents
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- JP2017048873A5 JP2017048873A5 JP2015173675A JP2015173675A JP2017048873A5 JP 2017048873 A5 JP2017048873 A5 JP 2017048873A5 JP 2015173675 A JP2015173675 A JP 2015173675A JP 2015173675 A JP2015173675 A JP 2015173675A JP 2017048873 A5 JP2017048873 A5 JP 2017048873A5
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- JP
- Japan
- Prior art keywords
- portions
- resin
- resin injection
- injection gate
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011347 resin Substances 0.000 claims description 42
- 229920005989 resin Polymers 0.000 claims description 42
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 4
- 230000002093 peripheral Effects 0.000 claims description 4
Description
本発明の上記目的は、下記の構成により達成される。
（１） 成形金型内に形成した略円環状のキャビティの周縁部に設けられた１個の樹脂射出ゲートから、溶解樹脂を前記キャビティ内に射出することによって成形される軸受用保持器の製造方法であって、
前記軸受用保持器は、
軸方向に離間した一対の円環部と、
一対の前記円環部を連結するように、円周方向に所定間隔で配置された奇数個の柱部と、
一対の前記円環部の互いに対向する面と、隣り合う前記柱部の互いに対向する面と、によって形成された、前記柱部と同数のポケット部と、
を有し、
前記樹脂射出ゲートは、前記柱部に設けられ、
複数の前記柱部のうち、周方向において前記樹脂射出ゲートと比べて該樹脂射出ゲートと対向するポケット部に近い前記柱部の、軸方向中央からずれた位置に、前記溶解樹脂を貯留可能な樹脂溜りが設けられ、
前記柱部と連通する前記樹脂溜りの連通部の断面積は、前記樹脂射出ゲートの断面積の１／４以下である、ことを特徴とする軸受用保持器の製造方法。
（２） 成形金型内に形成した略円環状のキャビティの周縁部に設けられた複数の樹脂射出ゲートから、溶解樹脂を前記キャビティ内に射出することによって成形される軸受用保持器の製造方法であって、
前記軸受用保持器は、
軸方向に離間した一対の円環部と、
一対の前記円環部を連結するように、円周方向に所定間隔で配置された奇数個の柱部と、
一対の前記円環部の互いに対向する面と、隣り合う前記柱部の互いに対向する面と、によって形成された、前記柱部と同数のポケット部と、
を有し、
隣り合う前記樹脂射出ゲートの間の領域における前記ポケット部の数が互いに等しく且つそれぞれ奇数個となるように、複数の前記樹脂射出ゲートはそれぞれ前記柱部に設けられ、
前記領域における複数の前記柱部のうち、周方向において前記樹脂射出ゲートに比べて前記領域の周方向中央に位置するポケット部に近い柱部の、軸方向中央からずれた位置に、前記溶解樹脂を貯留可能な樹脂溜りが設けられ、
前記柱部と連通する前記樹脂溜りの連通部の断面積は、前記樹脂射出ゲートの断面積の１／４以下である、ことを特徴とする軸受用保持器の製造方法。
（３） 前記樹脂射出ゲートは、前記柱部の軸方向中央からずれた位置に設けられ、
前記樹脂溜りは、前記柱部の軸方向中央から前記樹脂射出ゲートと同じ方向にずれた位置に設けられる、ことを特徴とする（１）又は（２）に記載の軸受用保持器の製造方法。
The above object of the present invention can be achieved by the following constitution.
(1) Manufacture of a bearing cage that is molded by injecting a molten resin into a cavity from one resin injection gate provided at the peripheral edge of a substantially annular cavity formed in a molding die. A method,
The bearing cage is
A pair of annular portions spaced apart in the axial direction;
An odd number of pillars arranged at predetermined intervals in the circumferential direction so as to connect the pair of ring parts;
A plurality of pocket portions equal to the number of the pillar portions formed by the mutually facing surfaces of the pair of annular portions and the mutually facing surfaces of the adjacent pillar portions;
Have
The resin injection gate is provided on the pillar portion,
Among the plurality of column portions, the molten resin can be stored at a position shifted from the axial center of the column portion close to the pocket portion facing the resin injection gate in the circumferential direction compared to the resin injection gate. A resin reservoir is provided,
The method of manufacturing a bearing retainer, wherein a cross-sectional area of the communication portion of the resin reservoir communicating with the column portion is ¼ or less of a cross-sectional area of the resin injection gate.
(2) A method of manufacturing a bearing cage that is molded by injecting a molten resin into the cavity from a plurality of resin injection gates provided at the peripheral edge of a substantially annular cavity formed in the molding die. Because
The bearing cage is
A pair of annular portions spaced apart in the axial direction;
An odd number of pillars arranged at predetermined intervals in the circumferential direction so as to connect the pair of ring parts;
A plurality of pocket portions equal to the number of the pillar portions formed by the mutually facing surfaces of the pair of annular portions and the mutually facing surfaces of the adjacent pillar portions;
Have
A plurality of the resin injection gates are respectively provided in the pillar portions so that the number of the pocket portions in the region between the adjacent resin injection gates is equal to each other and an odd number.
Among the plurality of column portions in the region, the molten resin is located at a position shifted from the axial center of a column portion close to the pocket portion located in the circumferential center of the region in the circumferential direction compared to the resin injection gate. Is provided with a resin reservoir,
The method of manufacturing a bearing retainer, wherein a cross-sectional area of the communication portion of the resin reservoir communicating with the column portion is ¼ or less of a cross-sectional area of the resin injection gate.
(3) The resin injection gate is provided at a position shifted from the axial center of the column part,
The method for manufacturing a bearing cage according to (1) or (2), wherein the resin reservoir is provided at a position shifted from an axial center of the column portion in the same direction as the resin injection gate. .
Claims (3)
前記軸受用保持器は、
軸方向に離間した一対の円環部と、
一対の前記円環部を連結するように、円周方向に所定間隔で配置された奇数個の柱部と、
一対の前記円環部の互いに対向する面と、隣り合う前記柱部の互いに対向する面と、によって形成された、前記柱部と同数のポケット部と、
を有し、
前記樹脂射出ゲートは、前記柱部に設けられ、
複数の前記柱部のうち、周方向において前記樹脂射出ゲートと比べて該樹脂射出ゲートと対向するポケット部に近い前記柱部の、軸方向中央からずれた位置に、前記溶解樹脂を貯留可能な樹脂溜りが設けられ、
前記柱部と連通する前記樹脂溜りの連通部の断面積は、前記樹脂射出ゲートの断面積の１／４以下である、ことを特徴とする軸受用保持器の製造方法。 A method of manufacturing a bearing retainer that is molded by injecting a molten resin into a cavity from a single resin injection gate provided at the peripheral edge of a substantially annular cavity formed in a molding die. And
The bearing cage is
A pair of annular portions spaced apart in the axial direction;
An odd number of pillars arranged at predetermined intervals in the circumferential direction so as to connect the pair of ring parts;
A plurality of pocket portions equal to the number of the pillar portions formed by the mutually facing surfaces of the pair of annular portions and the mutually facing surfaces of the adjacent pillar portions;
Have
The resin injection gate is provided on the pillar portion,
Among the plurality of column portions, the molten resin can be stored at a position shifted from the axial center of the column portion close to the pocket portion facing the resin injection gate in the circumferential direction compared to the resin injection gate. A resin reservoir is provided,
The method of manufacturing a bearing retainer, wherein a cross-sectional area of the communication portion of the resin reservoir communicating with the column portion is ¼ or less of a cross-sectional area of the resin injection gate.
前記軸受用保持器は、
軸方向に離間した一対の円環部と、
一対の前記円環部を連結するように、円周方向に所定間隔で配置された奇数個の柱部と、
一対の前記円環部の互いに対向する面と、隣り合う前記柱部の互いに対向する面と、によって形成された、前記柱部と同数のポケット部と、
を有し、
隣り合う前記樹脂射出ゲートの間の領域における前記ポケット部の数が互いに等しく且つそれぞれ奇数個となるように、複数の前記樹脂射出ゲートはそれぞれ前記柱部に設けられ、
前記領域における複数の前記柱部のうち、周方向において前記樹脂射出ゲートに比べて前記領域の周方向中央に位置するポケット部に近い柱部の、軸方向中央からずれた位置に、前記溶解樹脂を貯留可能な樹脂溜りが設けられ、
前記柱部と連通する前記樹脂溜りの連通部の断面積は、前記樹脂射出ゲートの断面積の１／４以下である、ことを特徴とする軸受用保持器の製造方法。 A method for manufacturing a bearing retainer that is molded by injecting molten resin into a cavity from a plurality of resin injection gates provided at a peripheral edge of a substantially annular cavity formed in a molding die. ,
The bearing cage is
A pair of annular portions spaced apart in the axial direction;
An odd number of pillars arranged at predetermined intervals in the circumferential direction so as to connect the pair of ring parts;
A plurality of pocket portions equal to the number of the pillar portions formed by the mutually facing surfaces of the pair of annular portions and the mutually facing surfaces of the adjacent pillar portions;
Have
A plurality of the resin injection gates are respectively provided in the pillar portions so that the number of the pocket portions in the region between the adjacent resin injection gates is equal to each other and an odd number.
Among the plurality of column portions in the region, the molten resin is located at a position shifted from the axial center of a column portion close to the pocket portion located in the circumferential center of the region in the circumferential direction compared to the resin injection gate. Is provided with a resin reservoir,
The method of manufacturing a bearing retainer, wherein a cross-sectional area of the communication portion of the resin reservoir communicating with the column portion is ¼ or less of a cross-sectional area of the resin injection gate.
前記樹脂溜りは、前記柱部の軸方向中央から前記樹脂射出ゲートと同じ方向にずれた位置に設けられる、ことを特徴とする請求項１又は２に記載の軸受用保持器の製造方法。 The resin injection gate is provided at a position shifted from the axial center of the column part,
The method for manufacturing a bearing retainer according to claim 1, wherein the resin reservoir is provided at a position shifted from the axial center of the column portion in the same direction as the resin injection gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015173675A JP6578827B2 (en) | 2015-09-03 | 2015-09-03 | Manufacturing method of bearing cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015173675A JP6578827B2 (en) | 2015-09-03 | 2015-09-03 | Manufacturing method of bearing cage |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017048873A JP2017048873A (en) | 2017-03-09 |
| JP2017048873A5 true JP2017048873A5 (en) | 2018-09-20 |
| JP6578827B2 JP6578827B2 (en) | 2019-09-25 |
Family
ID=58280005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015173675A Active JP6578827B2 (en) | 2015-09-03 | 2015-09-03 | Manufacturing method of bearing cage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6578827B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7396790B2 (en) * | 2018-08-10 | 2023-12-12 | 日本精工株式会社 | Manufacturing method for cages for rolling bearings |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5988514U (en) * | 1982-12-06 | 1984-06-15 | 日本精工株式会社 | Cage for rolling bearings |
| JP5768486B2 (en) * | 2011-05-12 | 2015-08-26 | 日本精工株式会社 | Resin cage for bearing and method for manufacturing the same |
| JP6413728B2 (en) * | 2014-12-11 | 2018-10-31 | 日本精工株式会社 | Manufacturing method of bearing cage |
| JP6405973B2 (en) * | 2014-12-11 | 2018-10-17 | 日本精工株式会社 | Manufacturing method of bearing cage |
| JP6413729B2 (en) * | 2014-12-11 | 2018-10-31 | 日本精工株式会社 | Manufacturing method of bearing cage |
-
2015
- 2015-09-03 JP JP2015173675A patent/JP6578827B2/en active Active
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