JP2014037859A - Gear wheel - Google Patents

Gear wheel Download PDF

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Publication number
JP2014037859A
JP2014037859A JP2012179969A JP2012179969A JP2014037859A JP 2014037859 A JP2014037859 A JP 2014037859A JP 2012179969 A JP2012179969 A JP 2012179969A JP 2012179969 A JP2012179969 A JP 2012179969A JP 2014037859 A JP2014037859 A JP 2014037859A
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Prior art keywords
frp
gear
gears
gear wheel
sheet
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JP2012179969A
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Japanese (ja)
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Takashi Uchida
内田隆志
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Csc Labo Kk
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Csc Labo Kk
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Priority to JP2012179969A priority Critical patent/JP2014037859A/en
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  • Gears, Cams (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an inexpensive FRP gear wheel by using an FRP textile sheet.SOLUTION: Fiber-reinforced plastic (FRP) sheets are wound and laminated for formation so that fibers orthogonal to a gear wheel shaft continue between lamination layers.

Description

本発明は、繊維強化プラスチック（FRP）製歯車に関するものである。 The present invention relates to a fiber reinforced plastic (FRP) gear.

歯車の素材は金属あるいは樹脂が用いられている。金属歯車は強度はあるが重い、樹脂歯車は金属歯車に比べ強度は落ちるが軽い特徴がある。 The gear is made of metal or resin. Metal gears are strong but heavy, and resin gears are lighter but less powerful than metal gears.

実用に際し、金属歯車のように強度があり、樹脂歯車のように軽い歯車が望まれる。 In practical use, a light gear such as a metal gear and a light gear such as a resin gear is desired.

FRPは軽くて強度もあり、FRPで歯車を製作すれば強くて軽い歯車が得られる。 FRP is light and strong, and strong and light gears can be obtained by making gears with FRP.

下記先行技術文献に見られるようにFRP歯車の製造が検討されている。 As seen in the following prior art documents, the manufacture of FRP gears has been studied.

特開平５−８３１１号公報JP-A-5-8311 特許第２９５９９０７号公報Japanese Patent No. 2959907

解決しようとする問題点は、金属歯車は強度はあるが重い、樹脂歯車は軽いが強度がないので、軽くて強度のある歯車を得ることである。軽くて強度のある歯車を得るには適した歯車素材を用いることである。FRPはその素材として適している。ただ、FRP製品は概して製造工程が複雑でコスト高になることである。FRP製品は一般にその製造工程が複数になるため素材の価格もさることながら製造工程数に応じたコストが発生し価格的に高価になる。FRP製品の製造方法として繊維を捲きつけていく方法がある（特許文献１）。人手を介さずにFRP繊維捲きつけによる成形が行えるため部品1個当たりの製造時間は少なく済むが、大量に生産するには、捲きつけ装置の複数台化が必要であり、設備投資が大きくなる。また、文献１のマンドレルに繊維を捲き付けたものに歯型を押し当て歯型を転写するにはある程度捲き付けを緩くしておかないと、FRPは伸びにくいため歯型が転写できない。文献２では歯部は切削加工により製作するが、強化用繊維が切断されてしまう。 The problem to be solved is to obtain a light and strong gear because the metal gear is strong but heavy, and the resin gear is light but not strong. In order to obtain a light and strong gear, a suitable gear material is used. FRP is a suitable material. However, FRP products are generally complex and expensive to manufacture. FRP products generally have a plurality of manufacturing processes, so the price of the material is increased, and the cost corresponding to the number of manufacturing processes is generated, resulting in an expensive price. As a method for manufacturing an FRP product, there is a method in which fibers are beaten (Patent Document 1). Because it is possible to form by FRP fiber brazing without human intervention, the manufacturing time per part can be reduced, but in order to produce in large quantities, it is necessary to use multiple brazing devices, which increases capital investment. . Further, if the tooth mold is pressed against the mandrel of Document 1 and the tooth mold is pressed to transfer the tooth mold, the tooth mold cannot be transferred unless the brazing is loosened to some extent unless the FRP is stretched easily. In Document 2, the tooth portion is manufactured by cutting, but the reinforcing fiber is cut.

本発明は、軽量、高強度かつ安価な歯車を得るため、FRP織物シートの強度負担繊維を切断することなく歯車を製造する方法である。 The present invention is a method for producing a gear without cutting the strength-bearing fiber of the FRP fabric sheet in order to obtain a lightweight, high-strength and inexpensive gear.

本発明の歯車は軽量・高強度であり、現在使われている多様な歯車を代替できる。 The gear of the present invention is lightweight and high-strength, and can replace various currently used gears.

歯車を1枚のFRPシートで製造する方法の２次元表示Two-dimensional display of the method of manufacturing gears with one FRP sheet 歯車を切り出すロッドを製造する方法の３次元表示Three-dimensional display of a method of manufacturing a rod for cutting out gears 歯車を切り出すロッドRod that cuts out gears 歯車を切り出す方法の例Example of how to cut gears

1枚の連続FRPシートを歯車歯型の内側に積層する。積層は複数層とする。FRPシートを複数枚重ねたものを用いてもよい。 One continuous FRP sheet is laminated inside the gear tooth mold. The lamination is a plurality of layers. A stack of a plurality of FRP sheets may be used.

図１,図２は、FRPシート１から歯車切り出しロッドを製造する方法を示す。歯車雌型２にFRPシートを捲き重ねる。FRPシートはあらかじめ樹脂を含浸させたものを使うか、捲きつけた後に樹脂を含浸させる方法でもよい。必ずしも歯車軸部まで連続シートを捲き重ねる必要はない。捲き重ね積層回数は強度要求により異なる。強度が得られる厚さまで連続シートを捲き重ねたら、新たなシートを捲き重ねることも可能である。ただし、新たなシートと旧シートとが滑りを起こさないように両シートをオーバーラップする等の処置が必要である。 1 and 2 show a method of manufacturing a gear cutting rod from the FRP sheet 1. Overlay the FRP sheet on the gear female mold 2. As the FRP sheet, a resin impregnated in advance may be used, or the FRP sheet may be impregnated with resin after being rubbed. It is not always necessary to roll the continuous sheet up to the gear shaft. The number of laying and stacking varies depending on strength requirements. Once the continuous sheets are rolled up to a thickness that provides strength, new sheets can be rolled up. However, it is necessary to take measures such as overlapping both sheets so that the new sheet and the old sheet do not slip.

図３は樹脂が固まってできた歯車切り出しロッド３を示す。 FIG. 3 shows the gear cutting rod 3 made of resin.

図４はロッド３を所要の厚さとなるように長手方向に輪切りすることにより最終歯車を得る方法例である。 FIG. 4 shows an example of a method of obtaining the final gear by cutting the rod 3 in the longitudinal direction so as to have a required thickness.

現在主流である金属歯車に対し、軽量・高強度かつ安価な価格の代替歯車が求められている。FRPは錆びないので歯車の特性として好ましい。 There is a need for an alternative gear that is lightweight, high-strength, and inexpensive, compared to metal gears that are currently mainstream. Since FRP does not rust, it is preferable as a gear characteristic.

１ FRPシート
２ 成形型
３ 歯車切り出しロッド
４ 完成歯車
５ のこぎり等切断具 DESCRIPTION OF SYMBOLS 1 FRP sheet 2 Forming die 3 Gear cutting rod 4 Finished gear 5 Cutting tools, such as saws

Claims (1)

複合材織物シートを捲き重ねすることにより成形される複合材歯車において、歯車軸に直交する繊維が積層間連続であることを特徴とする複合材歯車 A composite gear formed by rolling and laminating composite fabric sheets, wherein the fiber orthogonal to the gear axis is continuous between the layers.
JP2012179969A 2012-08-14 2012-08-14 Gear wheel Pending JP2014037859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012179969A JP2014037859A (en) 2012-08-14 2012-08-14 Gear wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012179969A JP2014037859A (en) 2012-08-14 2012-08-14 Gear wheel

Publications (1)

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JP2014037859A true JP2014037859A (en) 2014-02-27

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ID=50286144

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126158A (en) * 1983-01-06 1984-07-20 Ishikawa Seisakusho:Kk Gear made of fiber reinforced synthetic resin
JP2011025466A (en) * 2009-07-23 2011-02-10 Toyota Motor Corp Method for manufacturing gear made of fiber-reinforced resin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126158A (en) * 1983-01-06 1984-07-20 Ishikawa Seisakusho:Kk Gear made of fiber reinforced synthetic resin
JP2011025466A (en) * 2009-07-23 2011-02-10 Toyota Motor Corp Method for manufacturing gear made of fiber-reinforced resin

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