JPH0456906B2 - - Google Patents
Info
- Publication number
- JPH0456906B2 JPH0456906B2 JP12953984A JP12953984A JPH0456906B2 JP H0456906 B2 JPH0456906 B2 JP H0456906B2 JP 12953984 A JP12953984 A JP 12953984A JP 12953984 A JP12953984 A JP 12953984A JP H0456906 B2 JPH0456906 B2 JP H0456906B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- fiber
- woven fabric
- reinforced plastic
- tooth
- 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.)
- Expired
Links
- 239000000835 fiber Substances 0.000 claims description 32
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 16
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 16
- 239000002759 woven fabric Substances 0.000 claims description 16
- 239000012783 reinforcing fiber Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 description 6
- -1 polypropylene Polymers 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-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
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Pulleys (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は軽量で量産可能な繊維強化プラスチツ
ク製歯車に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a gear made of fiber-reinforced plastic that is lightweight and can be mass-produced.
（従来技術）
従来から用いられてきた金属製歯車は長期間の
使用による摩耗によつて駆動時に騒音や振動が発
生するという問題点を有していたことから、最近
では繊維強化プラスチツク製歯車が騒音防止、軽
量化の観点から各種の産業用機器に使用されるよ
うになつた。(Prior art) Metal gears that have been used in the past have had the problem of generating noise and vibration during driving due to wear over long periods of use, so recently gears made of fiber-reinforced plastic have been used. It has come to be used in various industrial equipment from the standpoint of noise prevention and weight reduction.
しかし、この繊維強化プラスチツク製歯車は、
炭素繊維、ガラス繊維、ケプラー繊維等の連続繊
維とエポキシ、フエノール、ポリエステル、ポリ
イミド樹脂等の熱硬化性樹脂又はポリスルフオ
ン、ポリエーテルスルフオン樹脂等の熱可塑性樹
脂を組み合わせて硬化させた円板状成形物を歯
切、穴あけ加工、等の機械加工を行つて製作さ
れ、切削時連続繊維が切断されるため補強繊維の
補強効果を十分期待することができず歯面強度を
低下させる恐れが生じ、さらに、歯切削に長時間
を費やし、また、切削治具の損傷が激しいことか
ら量産性に乏しい製造法である。更に機械加工時
に強度、弾性率の異方性によつて欠け、はく離等
のクラツクが発生し歯車の機械的性質が著しく低
下する欠点がある。一方、歯切等の機械加工を不
要とする上記欠点のない歯車の製造法として連続
繊維に樹脂を含浸させた成形材料を予め歯形形状
を有す予備成形金型を用いて歯面に沿つて積層し
歯形形状を形成した予備成形体を作製し、これを
成形金型内で硬化処理し繊維強化プラスチツク製
歯車とする方法がある。しかしながら、この方法
では歯形部の補強繊維の密度が他の部分に比べて
小さくなり、均一な特性を有する繊維強化プラス
チツク製歯車を製造することができない。 However, this fiber-reinforced plastic gear
Disk-shaped molding made by curing continuous fibers such as carbon fibers, glass fibers, and Kepler fibers in combination with thermosetting resins such as epoxy, phenol, polyester, and polyimide resins, or thermoplastic resins such as polysulfon and polyethersulfon resins. It is manufactured by machining things such as cutting gears and drilling holes, and since the continuous fibers are cut during cutting, the reinforcing effect of the reinforcing fibers cannot be expected to be sufficient and there is a risk of reducing the tooth surface strength. Furthermore, it takes a long time to cut the teeth, and the cutting jig is severely damaged, making it a manufacturing method that is not suitable for mass production. Furthermore, during machining, cracks such as chipping and peeling occur due to the anisotropy of strength and elastic modulus, resulting in a significant deterioration of the mechanical properties of the gear. On the other hand, as a manufacturing method for gears that does not require machining such as gear cutting and does not have the above-mentioned drawbacks, a molding material made of continuous fibers impregnated with resin is molded along the tooth surface using a preforming mold that has a tooth shape in advance. There is a method in which a preformed body formed by laminating a tooth shape is produced and then hardened in a molding die to form a fiber-reinforced plastic gear. However, with this method, the density of the reinforcing fibers in the tooth profile is lower than in other parts, making it impossible to manufacture a fiber-reinforced plastic gear with uniform characteristics.
（発明の目的）
本発明の目的は、これら従来技術の有する欠点
を除去し、軽量で機械的性質及び量産性に優れた
繊維強化プラスチツク製歯車を提供することにあ
る。(Objective of the Invention) An object of the present invention is to eliminate the drawbacks of these conventional techniques and to provide a gear made of fiber-reinforced plastic that is lightweight and has excellent mechanical properties and mass productivity.
（発明の構成）
本発明は、円板部とその周囲に形成された歯形
部からなる繊維強化プラスチツク製歯車におい
て、歯形部の補強繊維を短繊維とし、円板部の補
強繊維を織布とした繊維強化プラスチツク製歯車
に関する。(Structure of the Invention) The present invention provides a fiber-reinforced plastic gear consisting of a disc part and a toothed part formed around the disc part, in which the reinforcing fibers in the toothed part are short fibers, and the reinforcing fibers in the disc part are made of woven fabric. This invention relates to gears made of fiber-reinforced plastic.
第１図は本発明になる繊維強化プラスチツク製
歯車の一実施例になる一部切欠図を示すが、図に
おいて１０が歯形部、１１が円板部である。 FIG. 1 shows a partially cutaway view of an embodiment of the fiber-reinforced plastic gear according to the present invention, in which numeral 10 indicates a toothed portion and numeral 11 indicates a disc portion.
本発明に用いられる補強繊維としてはガラス繊
維、炭素繊維、シリコンカーバイド繊維、芳香族
ポリアミド繊維、ボロン繊維等が挙げられ、これ
らの繊維は単独でまたは２種以上組合せて用いら
れる。 Examples of reinforcing fibers used in the present invention include glass fibers, carbon fibers, silicon carbide fibers, aromatic polyamide fibers, boron fibers, and the like, and these fibers may be used alone or in combination of two or more.
本発明においては、歯形部には、ランダムに配
向された短繊維が用いられるが、その繊維長は、
6.35〜102mm（1/4〜４インチ）の範囲が好まし
い。6.35mmより短かい場合には、繊維による補強
効果が小さくなる傾向があり、102mmを越えると
金型で成形する場合には繊維配向が生じやすく、
あるいは流動し難くなり、成形品の機械的性質が
不均一になる傾向がある。 In the present invention, randomly oriented short fibers are used in the tooth profile, and the fiber length is as follows:
A range of 6.35 to 102 mm (1/4 to 4 inches) is preferred. If the length is shorter than 6.35 mm, the reinforcing effect of the fibers tends to decrease, and if the length exceeds 102 mm, fiber orientation tends to occur when molded.
Alternatively, it becomes difficult to flow, and the mechanical properties of the molded product tend to become non-uniform.
歯形部に短繊維を補強繊維として用いることに
より、短繊維はランダムに配向し、歯形部が均一
に強化される。 By using short fibers as reinforcing fibers in the toothed portion, the short fibers are randomly oriented and the toothed portion is uniformly reinforced.
歯形部は、短繊維で補強されるが、その全部を
短繊維で補強する必要は必ずしもなく、その一部
を円板部の補強に用いた織布で補強してもよい。 Although the tooth-shaped portion is reinforced with short fibers, it is not necessarily necessary to reinforce all of the tooth-shaped portion with short fibers, and a portion thereof may be reinforced with the woven fabric used for reinforcing the disc portion.
円板の補強繊維には織布が用いられ、繊維の方
向が２軸直交方向に配列された織物が好ましい。 A woven fabric is used as the reinforcing fibers of the disk, and a woven fabric in which the fiber directions are arranged perpendicular to two axes is preferable.
歯車に用いられる樹脂組成物には特に制限はな
く、例えばエポキシ樹脂組成物、不飽和ポリエス
テル樹脂組成物、ポリイミド樹脂組成物等の熱硬
化性樹脂組成物もしくはポリスルフオン樹脂、ポ
リエーテルスルフオン樹脂等の熱可塑性樹脂組成
物が用いられる。 There are no particular restrictions on the resin composition used for gears, and examples include thermosetting resin compositions such as epoxy resin compositions, unsaturated polyester resin compositions, and polyimide resin compositions, or polysulfone resins and polyether sulfon resins. A thermoplastic resin composition is used.
本発明になる繊維強化プラスチツク製歯車は、
短繊維または織布に樹脂組成物を含浸させ、つい
でこれを金型内で成形して得られる。歯形部に短
繊維が、円板部に織布が位置するように金型内に
配置して成形するほかその条件等には特に制限は
ない。 The fiber-reinforced plastic gear according to the present invention is
It is obtained by impregnating short fibers or woven fabric with a resin composition and then molding it in a mold. There are no particular restrictions on the conditions, except that the short fibers are placed in the toothed portion and the woven fabric is placed in the disk portion in the mold.
（実施例）
実施例を説明する。部とあるのは重量部であ
る。(Example) An example will be described. Parts are by weight.
実施例
エポキシ樹脂（シエル化学株式会社製商品名エ
ピコート828）100部に硬化剤（橋本化成製商品名
BF3・400）３部を均一に混合した組成物を幅
1100mm、ポリプロピレンフイルム（東レ株式会社
製トーレ40番Type2505）の上に400g／m2として
ロールコータを用いて塗布したのち、この上に幅
1000mmのカーボン繊維の織布、トレカ6341（東レ
株式会社製商品名）を貼り合わせ、さらにその上
に同じポリプロピレンフイルムを貼り合わせてサ
ンドイツチ状にしてロールに巻き取り80℃で48時
間加熱炉中で熟成させて織布プリプレグとした。Example: 100 parts of epoxy resin (trade name Epikote 828 manufactured by Ciel Kagaku Co., Ltd.) and a curing agent (trade name manufactured by Hashimoto Kasei Co., Ltd.)
BF 3・400)
1100mm, coated with a roll coater at 400g/ m2 on polypropylene film (Toray No. 40 Type 2505 manufactured by Toray Industries, Inc.), and then
A 1000mm carbon fiber woven fabric, Torayca 6341 (product name manufactured by Toray Industries, Inc.), was laminated, and then the same polypropylene film was laminated on top of that, formed into a sandwich shape, wound into a roll, and placed in a heating oven at 80℃ for 48 hours. It was aged and made into a woven fabric prepreg.
上記の織布プリプレグの製法と同様にして、同
じエポキシ樹脂組成物を塗布した同じポリプロピ
レンフイルム上にカーボンロービング：トレカＴ
−300A（東レ株式会社製商品名）を１インチに切
断した短繊維を均一に散布し、その上に同じポリ
プロピレンフイルムを貼り合わせてサンドイツチ
状にしてロール状に巻き取り80℃で48時間加熱炉
中で熟成させて短繊維プリプレグとした。 Carbon roving: Trading card T
Short fibers of -300A (product name manufactured by Toray Industries, Inc.) cut into 1-inch pieces are uniformly scattered, the same polypropylene film is laminated on top of the fibers, and the same polypropylene film is laminated on top of the short fibers, made into a sandwich shape, wound into a roll, and heated in a heating oven at 80°C for 48 hours. The fibers were aged in a medium to produce short fiber prepreg.
次に、上記の織布プリプレグの両面からポリプ
ロピレンフイルムをはく離してこれを幅100mmに
切断し、さらに片側に50mm間隔で長さ50mmの切れ
目を入れた後、第２図に示す成形金型の上下のイ
ンサート１，２にそれぞれ12周巻き付けた後、上
下のインサートを合体させた。さらにこの合体さ
せたインサートの外周に上記の両面のポリプロピ
レンフイルムをはく離し、幅100mmに切断した短
繊維プリプレグを５周巻き付けて、第２図に示す
積層構成をもつ予備成形体を作製した。第２図に
おいて、４は上インサートに巻き付けた織布プリ
プレグ、５は下インサートに巻き付けた織布プリ
プレグ、６は短繊維プリプレグである。次に第３
図に示すように下インサート２を下型３に取り付
けた後、９分割された歯型７を予備成形体の周方
向に装てんした後、金型を締めて150℃で３時間、
30Kgｆ／cm2で加熱加圧成形させて繊維強化プラス
チツク製歯車を作製した。 Next, the polypropylene film was peeled off from both sides of the woven fabric prepreg and cut into a width of 100 mm. After making cuts of 50 mm in length on one side at 50 mm intervals, the molding die shown in Figure 2 was cut. After wrapping each of the upper and lower inserts 1 and 2 12 times, the upper and lower inserts were combined. Further, the polypropylene films on both sides were peeled off and short fiber prepreg cut to a width of 100 mm was wrapped five times around the outer circumference of this combined insert to produce a preformed body having the laminated structure shown in FIG. 2. In FIG. 2, 4 is a woven fabric prepreg wrapped around the upper insert, 5 is a woven fabric prepreg wrapped around the lower insert, and 6 is a staple fiber prepreg. Then the third
As shown in the figure, after attaching the lower insert 2 to the lower mold 3, and loading the nine-divided tooth mold 7 in the circumferential direction of the preform, the mold was tightened and heated at 150°C for 3 hours.
A gear made of fiber-reinforced plastic was produced by heat-pressing molding at 30 kgf/cm 2 .
実施例で得られた繊維強化プラスチツク製歯車
は第１図の１部切欠図に示すように歯形部が短繊
維で、円板部が織布で補強された構造になつた。
歯切等の機械加工を不要とし、かつ円板部及び歯
形部の繊維含有率が均一で負荷に対する強度も十
分な軽量で量産性に優れた繊維強化プラスチツク
製歯車が得られた。 The fiber-reinforced plastic gear obtained in the example had a structure in which the tooth section was reinforced with short fibers and the disk section was reinforced with woven fabric, as shown in the partially cutaway view of FIG.
A fiber-reinforced plastic gear that does not require machining such as gear cutting, has a uniform fiber content in the disk portion and tooth profile portion, has sufficient strength against loads, is lightweight, and is excellent in mass production.
（発明の効果）
本発明によれば、軽量で機械的性質及び量産性
に優れた繊維強化プラスチツク製歯車を得ること
ができる。(Effects of the Invention) According to the present invention, it is possible to obtain a fiber-reinforced plastic gear that is lightweight and has excellent mechanical properties and mass productivity.
第１図は本発明の一実施例になる繊維強化プラ
スチツク製歯車の一部切欠図、第２図は実施例で
得た予備成形体の断面図及び第３図は実施例で行
なつた成形法の説明図である。
符号の説明 １…上インサート、２…下インサ
ート、３…下型、４…織布プリプレグ、５…織布
プリプレグ、６…短繊維プリプレグ、７…歯型、
８…織布層、９…短繊維層。
Fig. 1 is a partially cutaway view of a fiber-reinforced plastic gear according to an embodiment of the present invention, Fig. 2 is a sectional view of a preform obtained in the embodiment, and Fig. 3 is a cross-sectional view of a preformed body obtained in the embodiment. It is an explanatory diagram of the law. Explanation of symbols 1...Upper insert, 2...Lower insert, 3...Lower mold, 4...Woven fabric prepreg, 5...Woven fabric prepreg, 6...Short fiber prepreg, 7...Tooth pattern,
8... Woven fabric layer, 9... Short fiber layer.
Claims (1)
る繊維強化プラスチツク製歯車において、歯形部
の補強繊維を短繊維とし、円板部の補強繊維を織
布とした繊維強化プラスチツク製歯車。1. A fiber-reinforced plastic gear consisting of a disc part and a toothed part formed around the disc part, in which the reinforcing fibers in the toothed part are short fibers, and the reinforcing fibers in the disc part are woven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12953984A JPS6110167A (en) | 1984-06-22 | 1984-06-22 | Fiber reinforced plastics pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12953984A JPS6110167A (en) | 1984-06-22 | 1984-06-22 | Fiber reinforced plastics pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6110167A JPS6110167A (en) | 1986-01-17 |
| JPH0456906B2 true JPH0456906B2 (en) | 1992-09-09 |
Family
ID=15012023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12953984A Granted JPS6110167A (en) | 1984-06-22 | 1984-06-22 | Fiber reinforced plastics pulley |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6110167A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0660674B2 (en) * | 1988-08-31 | 1994-08-10 | 光洋精工株式会社 | Resin gear |
| JP2591175B2 (en) * | 1989-08-31 | 1997-03-19 | 新神戸電機株式会社 | Thermosetting resin gear |
| US5172303A (en) * | 1990-11-23 | 1992-12-15 | Motorola, Inc. | Electronic component assembly |
-
1984
- 1984-06-22 JP JP12953984A patent/JPS6110167A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6110167A (en) | 1986-01-17 |
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