JP2016151346A - 転がり軸受用保持器およびその製造方法、並びに転がり軸受 - Google Patents
転がり軸受用保持器およびその製造方法、並びに転がり軸受 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 220
- 239000011347 resin Substances 0.000 claims abstract description 220
- 239000000463 material Substances 0.000 claims abstract description 133
- 238000001746 injection moulding Methods 0.000 claims abstract description 34
- 238000005096 rolling process Methods 0.000 claims description 57
- 239000012783 reinforcing fiber Substances 0.000 claims description 41
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 21
- 229920002530 polyetherether ketone Polymers 0.000 claims description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 13
- 239000004917 carbon fiber Substances 0.000 claims description 13
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 abstract description 10
- 239000007924 injection Substances 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 10
- 239000000835 fiber Substances 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 16
- 239000004952 Polyamide Substances 0.000 description 9
- 239000008188 pellet Substances 0.000 description 9
- 229920002647 polyamide Polymers 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 229920006122 polyamide resin Polymers 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000004697 Polyetherimide Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 229920001601 polyetherimide Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- GVNWZKBFMFUVNX-UHFFFAOYSA-N Adipamide Chemical compound NC(=O)CCCCC(N)=O GVNWZKBFMFUVNX-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 description 1
- 229920006128 poly(nonamethylene terephthalamide) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N terephthalic acid group Chemical group C(C1=CC=C(C(=O)O)C=C1)(=O)O KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/49—Cages for rollers or needles comb-shaped
- F16C33/494—Massive or moulded comb cages
- F16C33/495—Massive or moulded comb cages formed as one piece cages, i.e. monoblock comb cages
- F16C33/498—Massive or moulded comb cages formed as one piece cages, i.e. monoblock comb cages made from plastic, e.g. injection moulded comb cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
樹脂材A:PEEK樹脂+炭素繊維30重量%
樹脂材B:PEEK樹脂のみ
樹脂材C:PEEK樹脂+炭素繊維20重量%
樹脂材Aの成形用ペレットと樹脂材Bの成形用ペレットとを50:50の体積比で均一に混合してインラインスクリュー式射出成形機のホッパーに入れ、図1(b)に示す形状の保持器(外径186.4mm、内径168mm、幅16.05mm)を成形した。射出成形時のゲートは、柱内径中央付近にあり、ウェルド部はゲート部と隣り合う柱の中央部に軸方向に形成されている。この保持器のウェルド部の引張強度を確認するため、作製した保持器を用いて保持器引張試験を実施した。保持器引張試験は、図5に示す円環状の引張治具21に試験用の保持器22を、そのウェルド部が水平位置になるようにセットし、島津製作所社製の引張試験機(オートグラフAG50KNX)を用いて10mm/minの引張速度で行なった。結果を表1に示す。
樹脂材Aの成形用ペレットを用い、実施例1と同じ射出成形機で、実施例1と同一形状の保持器を成形した。作製した保持器を用いて実施例1と同様の保持器引張試験を実施した。結果を表1に示す。
参考例1では樹脂材C(PEEK樹脂:炭素繊維20重量%)、参考例2では樹脂材A(PEEK樹脂:炭素繊維30重量%)、の成形用ペレットを用いダンベル試験片を作製して引張試験を行なった。ウェルド部と非ウェルド部の強度を測定し、ウェルド部強度保持比率(ウェルド強度/非ウェルド強度)を算出した。結果を表2に示す。
2 環状部
3 柱部
4 ポケット部
5 複列円筒ころ軸受
6 内輪
7 外輪
8 円筒ころ
9 ウェルド部
11 射出成形機
12 ホッパー
13 シリンダ
14 ヒータ
15 スクリュー
16 シリンダーノズル
17 金型
21 引張治具
22 試験用保持器
Claims (7)
- 転がり軸受における転動体を保持する転がり軸受用保持器であって、
2種以上の樹脂材からなる樹脂材料を用いて一体に射出成形してなる射出成形体であり、前記樹脂材料は、強化繊維が配合されている樹脂材Aと、強化繊維が配合されていない、または樹脂材Aよりも強化繊維の配合割合が少ない樹脂材Bとを含むことを特徴とする転がり軸受用保持器。 - 前記保持器において、前記射出成形時に前記樹脂材料が合流する領域に形成されるウェルド部と該ウェルド部以外の部分とが種類の異なる樹脂材で形成されており、前記ウェルド部が前記樹脂材Bで形成され、前記ウェルド部以外の部分が前記樹脂材Aで形成されていることを特徴とする請求項1記載の転がり軸受用保持器。
- 前記樹脂材Aおよび前記樹脂材Bのベース樹脂が、ポリエーテルエーテルケトン樹脂またはポリフェニレンサルファイド樹脂であることを特徴とする請求項1または請求項2記載の転がり軸受用保持器。
- 前記強化繊維が、炭素繊維およびガラス繊維から選ばれる少なくとも1つであることを特徴とする請求項1、請求項2または請求項3記載の転がり軸受用保持器。
- 内輪および外輪と、この内・外輪間に介在する複数の転動体と、この転動体を保持する保持器とを備える転がり軸受であって、
前記保持器が、請求項1から請求項4までのいずれか1項記載の転がり軸受用保持器であることを特徴とする転がり軸受。 - 転がり軸受における転動体を保持する転がり軸受用保持器の製造方法であって、
2種以上の樹脂材からなる樹脂材料として、少なくとも、強化繊維が配合されている樹脂材Aと、強化繊維が配合されていない、または樹脂材Aよりも強化繊維の配合割合が少ない樹脂材Bとを含む材料を用いて、射出成形により一体に成形することを特徴とする転がり軸受用保持器の製造方法。 - 前記射出成形に用いる射出成形機において、前記樹脂材料を構成する前記樹脂材のそれぞれのホッパーへの投入量および投入順を管理することを特徴とする請求項6記載の転がり軸受用保持器の製造方法。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018192723A (ja) * | 2017-05-18 | 2018-12-06 | 中西金属工業株式会社 | 片円環型樹脂保持器の製造方法 |
JP2019074097A (ja) * | 2017-10-12 | 2019-05-16 | Ntn株式会社 | 円筒ころ軸受用保持器および円筒ころ軸受 |
Families Citing this family (1)
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JP2024086327A (ja) * | 2022-12-16 | 2024-06-27 | 日本精工株式会社 | 樹脂製保持器の製造方法 |
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2015
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JP2019074097A (ja) * | 2017-10-12 | 2019-05-16 | Ntn株式会社 | 円筒ころ軸受用保持器および円筒ころ軸受 |
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