WO2014171450A1 - 繊維強化樹脂歯車 - Google Patents
繊維強化樹脂歯車 Download PDFInfo
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- WO2014171450A1 WO2014171450A1 PCT/JP2014/060714 JP2014060714W WO2014171450A1 WO 2014171450 A1 WO2014171450 A1 WO 2014171450A1 JP 2014060714 W JP2014060714 W JP 2014060714W WO 2014171450 A1 WO2014171450 A1 WO 2014171450A1
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- Prior art keywords
- fiber
- prototype
- glass wool
- glass
- reinforced resin
- Prior art date
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- 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
- F16H55/17—Toothed wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
- B29K2309/08—Glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/775—Toothed articles
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- 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
- F16H2055/065—Moulded gears, e.g. inserts therefor
Definitions
- This invention relates to a fiber reinforced resin gear containing glass wool.
- an object of the present invention is to provide a fiber-reinforced resin gear with improved wear resistance under high temperature use.
- the present invention relates to a fiber-reinforced resin gear formed by injecting a resin material containing glass wool into a cavity of a mold.
- the glass wool is distributed so that the fiber diameter is widely dispersed in the range of 0.1 to 15 ⁇ m, the mode value of the fiber diameter appears between 2 to 5 ⁇ m, and the average fiber diameter is 3 Those with a thickness of ⁇ 5 ⁇ m are used.
- the wear resistance at high temperature is improved as compared with the conventional fiber reinforced resin gear.
- FIG. 1 is a view showing a fiber reinforced resin gear according to an embodiment of the present invention
- FIG. 1 (a) is a front view of the fiber reinforced resin gear
- FIG. 1 (b) is taken along the line AA in FIG. It is sectional drawing of the fiber reinforced resin gear shown cut.
- It is a figure (histogram) which shows the distribution state of the fiber diameter of the glass wool used for the 1st prototype.
- It is a figure (histogram) which shows the distribution state of the fiber diameter of the glass wool used for the 2nd prototype.
- It is a figure (histogram) which shows the distribution state of the fiber diameter of the glass wool used for the 3rd prototype.
- FIG.5 (a) is a figure which shows the abrasion state of the tooth
- FIG.5 (b) is a figure which shows the abrasion state of the tooth
- FIG. 6A is a diagram showing the tooth wear state of the second prototype
- FIG. 6B is a diagram showing the tooth wear state of the second conventional product.
- FIG. 7A is a diagram showing the tooth wear state of the third prototype
- FIG. 7B is a diagram showing the tooth wear state of the third conventional product.
- FIG. 1 is a view showing a fiber-reinforced resin gear 1 according to the present embodiment.
- This fiber reinforced resin gear 1 is made of a resin material containing glass wool (for example, polyamide (PA), polyacetal (POM), polyphenylene sulfide (PPS), polyphthalamide (PPA), polyetherimide, polyethersulfone, polyketone, Molded by injection of thermoplastic resin such as polyetheretherketone, polysulfone, polyphenylene ether, polyimide, polyamideimide, phenoxy, etc., preferably PA, POM, PPS, PPA, etc.) into the mold cavity
- a rim 3 is formed on the outer peripheral side of the disc-shaped web 2 and a plurality of teeth 4 (only one is shown in FIG. 1) is formed on the outer peripheral side of the rim 3.
- a fitting portion 6 is formed at the center of the web 2.
- Glass wool is obtained by forming glass fiber from C glass or E glass by a centrifugal method and / or a flame method, and is widely dispersed in a fiber diameter range of 0.1 to 15 ⁇ m, preferably 0.5 to 11 ⁇ m.
- the fiber diameter is distributed such that the mode value appears between 2 and 5 ⁇ m, and the average fiber diameter is 3 to 5 ⁇ m, preferably 4 to 5 ⁇ m.
- This glass wool is generally called a short fiber, and is different from chopped strands, milled fibers, and the like obtained by processing long fibers.
- the first prototype is a spur gear that is formed by injecting polyamide (PA66) containing 33% by weight of glass wool (glass made from C glass by centrifugation) into the mold cavity. 1 is formed in the same shape as the fiber-reinforced resin gear shown in FIG.
- the first prototype is a module 1, a standard involute spur gear having a pressure angle of 20 ° and 30 teeth.
- FIG. 2 is a diagram (histogram) showing the fiber diameter distribution of the glass wool used in the first prototype.
- the horizontal axis represents the class of fiber diameter ( ⁇ m) of glass wool
- the vertical axis represents the amount of glass wool belonging to each class relative to the total amount of glass wool (total weight of glass wool belonging to each class 1 to 11). It represents the ratio (%).
- Table 1 below shows the relationship between the class of FIG. 2 and the fiber diameter (d).
- the glass wool used in the prototype is widely dispersed in a fiber diameter range of 0.5 to 11 ⁇ m, and the mode value of the fiber diameter appears between 3 and 4 ⁇ m.
- the average fiber diameter was 4.7 ⁇ m (actual measured value).
- the second prototype is a spur gear formed by injecting polyamide (PA66) containing 43% by weight of glass wool (glass made from C glass by centrifugation) into the mold cavity. 1 is formed in the same shape as the fiber-reinforced resin gear shown in FIG.
- the second prototype is a standard involute spur gear having a module 1, a pressure angle of 20 °, and 30 teeth, like the first prototype.
- FIG. 3 is a diagram (histogram) showing the fiber diameter distribution of the glass wool used in the second prototype.
- the horizontal axis represents the class of fiber diameter ( ⁇ m) of glass wool
- the vertical axis represents the amount of glass wool belonging to each class relative to the total amount of glass wool (total weight of glass wool belonging to each class 1 to 11). It represents the ratio (%).
- the glass wool used in the prototype is widely dispersed in the fiber diameter range of 1 ⁇ m or less to 9 ⁇ m, and the mode value of the fiber diameter appears between 4 and 5 ⁇ m.
- the fiber diameter was 4.8 ⁇ m (actual measurement value).
- the third prototype is a spur gear formed by injecting polyamide (PA66) containing 33% by weight of glass wool (glass made from C glass by centrifugation) into the mold cavity. 1 is formed in the same shape as the fiber-reinforced resin gear shown in FIG.
- the third prototype is a standard involute spur gear having a module 1, a pressure angle of 20 °, and 30 teeth, like the first prototype.
- FIG. 4 is a diagram (histogram) showing the fiber diameter distribution of the glass wool used in the third prototype.
- the horizontal axis represents the class of fiber diameter ( ⁇ m) of glass wool
- the vertical axis represents the amount of glass wool belonging to each class relative to the total amount of glass wool (the total weight of glass wool belonging to each class 1 to 11). It represents the ratio (%).
- the glass wool used in the third prototype is widely dispersed in the fiber diameter range of 1 ⁇ m or less to 11 ⁇ m, and the mode value of the fiber diameter appears between 2 and 3 ⁇ m, and the average The fiber diameter was 4.3 ⁇ m (actual measured value).
- the first conventional product is a spur gear formed by injecting polyamide (PA66) containing 33% by weight of glass long fibers into a cavity of a mold, and the fiber reinforced resin gear 1 shown in FIG. It is formed in the same shape.
- the first conventional product is a standard involute spur gear having a module 1, a pressure angle of 20 °, and 30 teeth as in the first prototype.
- polyamide (PA66) containing 33% by weight of glass long fibers corresponds to Leona (registered trademark) 1300G of Asahi Kasei Corporation.
- the fiber diameter of the long glass fiber used in the first conventional product was 13 ⁇ m (actual value).
- the second conventional product is a spur gear formed by injecting polyamide (PA66) containing 43% by weight of long glass fibers into a cavity of a mold, and the fiber reinforced resin gear 1 shown in FIG. It is formed in the same shape.
- the second conventional product is a standard involute spur gear having a module 1, a pressure angle of 20 °, and 30 teeth as in the second prototype.
- polyamide (PA66) containing 43% by weight of glass long fibers corresponds to Leona (registered trademark) 13G43 of Asahi Kasei Corporation.
- the fiber diameter of the long glass fiber used in the second conventional product was 13 ⁇ m (measured value).
- the third conventional product is a spur gear formed by injecting polyamide (PA66) containing 33% by weight of glass long fibers into a cavity of a mold, and the fiber reinforced resin gear 1 shown in FIG. It is formed in the same shape.
- the third conventional product is a standard involute spur gear having a module 1, a pressure angle of 20 °, and 30 teeth, like the third prototype.
- polyamide (PA66) containing 33% by weight of glass long fibers corresponds to Zytel (registered trademark) 70G33L manufactured by DuPont.
- the fiber diameter of the long glass fiber used in the third conventional product was 10 ⁇ m (measured value).
- Durability test (first durability test) The first durability test is performed in a state where a pair of first prototypes and a pair of first conventional products are engaged with each other, and the number of rotations is 250 rpm in a high temperature environment of 130 ° C. Then, a test torque of 1.5 Nm was applied, and grease was applied to the tooth surface (Toray Dow Corning Co., Ltd .: EM-50L) until the teeth were broken (broken). Table 2 shows the results of the first durability test.
- the durability of the first prototype in a high temperature (130 ° C.) environment is improved as compared with the first conventional product.
- the fiber diameter of the first prototype glass wool is widely dispersed as 0.5 to 11 ⁇ m, and the fiber diameter of the first prototype glass wool is smaller than the average fiber diameter of 4.7 ⁇ m.
- the fiber diameter of the first prototype glass wool (0.5 to 11 ⁇ m) is dispersed in the diameter range (0.5 to 4.7 ⁇ m). If the fiber content of the first prototype is the same as that of the first conventional product, the contact area between the glass wool and the base resin (PA66) of the first prototype is the first.
- the contact area between the long glass fiber of the conventional product and the base resin (PA66) is larger, and the reinforcing effect of the first prototype fiber (glass wool) is the reinforcing effect of the first conventional fiber (glass long fiber). Is thought to be due to being larger than The
- the second durability test is performed in a state where a pair of second prototypes and a pair of second conventional products are engaged with each other, and the number of rotations is 1000 rpm in a high temperature environment of 130 ° C. Then, a test torque of 0.4 Nm was applied, and grease was applied to the tooth surface (Toray Dow Corning Co., Ltd .: EM-50L) until the teeth were broken (broken). Table 3 shows the results of the second durability test.
- the durability of the second prototype in a high temperature (130 ° C.) environment is improved as compared with the second conventional product.
- the fiber diameter of the glass wool of the second prototype is widely dispersed from 1 ⁇ m or less to 9 ⁇ m, and the fiber diameter of the second prototype glass fiber is smaller than the average fiber diameter of 4.8 ⁇ m.
- the fiber diameter of the glass wool of the second prototype (from 1 ⁇ m to 9 ⁇ m) is thinner than the fiber diameter of the second conventional glass fiber (13 ⁇ m)
- the contact area between the glass wool of the second prototype and the base resin (PA66) is the same as that of the second conventional glass long fiber and the base resin (PA66).
- the reinforcing effect of the second prototype fiber (glass wool) is greater than the reinforcing effect of the second conventional fiber (glass long fiber).
- the first wear test is performed in a state in which a pair of first prototypes similar to the first durability test and a pair of first conventional products are engaged with each other, and the temperature is 130 ° C. 48 hours (number of meshing times: 7.) in a high temperature environment with a rotational speed of 250 rpm and a test torque of 1 Nm applied and grease (Toray Dow Corning Co., Ltd .: EM-50L) applied to the tooth surface. 2 ⁇ 10 5 times) continuously.
- FIG. 5 (a) is a diagram showing the state of tooth wear of the first prototype.
- FIG. 5B is a diagram showing the state of wear of the teeth of the first conventional product.
- the maximum wear amount on the tooth surface of the first prototype was 0.03 mm, whereas the maximum wear amount on the tooth surface of the first conventional product. was 0.12 mm, and the teeth of the first prototype had less wear than the teeth of the first conventional product.
- the change in weight due to wear of the pair of first prototypes is that the first prototype on the driving side decreases in weight by 0.011 g and the first prototype on the driven side weighs by 0.014 g. Diminished.
- the weight change accompanying wear of the pair of first conventional products is that the first conventional product on the driving side is reduced in weight by 0.042 g, and the first conventional product on the driven side is only 0.045 g. Weight decreased.
- the weight change accompanying wear of the pair of first prototypes was smaller than the weight change accompanying wear of the pair of first conventional products.
- the first prototype is superior to the first conventional product in wear resistance in a high temperature (130 ° C.) environment.
- the result of the first wear test is as follows if the first prototype and the first conventional product have the same fiber content.
- the contact area between the glass wool of the prototype and the base resin (PA66) is larger than the contact area between the glass long fiber of the first conventional product and the base resin (PA66), and the fiber of the first prototype (glass wool) This is considered to be because the reinforcing effect due to is larger than the reinforcing effect due to the first conventional fiber (glass long fiber).
- the result of the first abrasion test shows that the average fiber diameter (4.7 ⁇ m) of the first prototype is smaller than the fiber diameter (13 ⁇ m) of the first conventional glass fiber, and the first trial The glass wool of the work is dispersed in a large fiber diameter range (0.5 to 4.7 ⁇ m) smaller than the average fiber diameter of 4.7 ⁇ m, so the attacking gear teeth of the mating mating gear are more aggressive than the first conventional product. This is also attributed to the fact that the first prototype is smaller.
- the second wear test is performed in a state where a pair of second prototypes similar to the second endurance test and a pair of second conventional products are meshed with each other, at 130 ° C. 48 hours (number of meshing times: with a test torque of 0.8 Nm applied at a rotational speed of 250 rpm under a high temperature environment and grease (Toray Dow Corning Co., Ltd .: EM-50L) applied to the tooth surface. 7.2 ⁇ 10 5 times) continuously.
- FIG. 6 (a) is a diagram showing the worn state of the teeth of the second prototype.
- FIG. 6B is a diagram showing the state of wear of the teeth of the second conventional product.
- the maximum wear amount of the tooth surface of the second prototype was 0.02 mm, whereas the maximum wear amount of the tooth surface of the second conventional product. was 0.14 mm, and the tooth of the second prototype had less wear than the tooth of the second conventional product.
- the change in weight due to wear of the pair of second prototypes is that the second prototype on the driving side is reduced in weight by 0.006 g, and the second prototype on the driven side is only 0.009 g in weight. Diminished.
- the change in weight due to wear of the pair of second conventional products is that the second conventional product on the driving side is reduced in weight by 0.107 g, and the second conventional product on the driven side is only 0.110 g. Weight decreased.
- the weight change accompanying wear of the pair of second prototypes was smaller than the weight change accompanying wear of the pair of second conventional products.
- the second prototype has better wear resistance in a high temperature (130 ° C.) environment than the second conventional product.
- the result of the second wear test is the second if the fiber content of the second prototype and the second conventional product is the same.
- the contact area between the glass wool of the prototype and the base resin (PA66) is larger than the contact area between the glass long fiber of the second conventional product and the base resin (PA66), and the fiber of the second prototype (glass wool) This is considered to be due to the fact that the reinforcing effect due to the fiber becomes larger than the reinforcing effect due to the fiber (glass long fiber) of the second conventional product.
- the result of the second abrasion test shows that the average fiber diameter (4.8 ⁇ m) of the second prototype is smaller than the fiber diameter (13 ⁇ m) of the glass fiber of the second conventional product. Since the glass wool of the work exists in a large dispersion in the fiber diameter range smaller than the average fiber diameter of 4.8 ⁇ m, the second prototype is more aggressive than the second conventional product because of the aggressiveness to the teeth of the mating gears. This is thought to be due to the small size.
- FIG. 7 (a) is a diagram showing the tooth wear state of the third prototype.
- FIG.7 (b) is a figure which shows the abrasion state of the tooth
- the maximum wear on the tooth surface of the third prototype was 0.03 mm, whereas the maximum wear on the tooth surface of the third conventional product. was 0.18 mm, and the teeth of the third prototype had less wear than the teeth of the third conventional product.
- the change in weight due to wear of the pair of third prototypes is that the third prototype on the driving side is reduced in weight by 0.022 g, and the third prototype on the driven side is only 0.022 g in weight. Diminished.
- the weight change accompanying the wear of the pair of third conventional products is that the weight of the third conventional product on the driving side is reduced by 0.038 g and the weight of the third conventional product on the driven side is only 0.037 g. Weight decreased.
- the weight change accompanying wear of the pair of third prototypes was smaller than the weight change accompanying wear of the pair of third conventional products.
- the third prototype is superior to the third conventional product in wear resistance in a high temperature (130 ° C.) environment.
- the contact area between the glass wool of the third prototype and the base resin (PA66) is The contact area between the third long glass fiber and the base resin (PA66) is larger than the contact area between the third conventional fiber and the third prototype fiber (glass wool). This is thought to be due to the fact that the reinforcing effect is greater.
- the result of the third wear test shows that the average fiber diameter (4.3 ⁇ m) of the third prototype is smaller than the fiber diameter (10 ⁇ m) of the third conventional glass fiber, and the third trial Because the glass wool of the work is dispersed in a large fiber diameter range that is smaller than the average fiber diameter of 4.3 ⁇ m, the third prototype is more aggressive than the third conventional product in terms of attacking the teeth of the mating gear. This is thought to be due to the small size.
- the fiber reinforced resin gear 1 of the present invention is not limited to the spur gear illustrated in the above embodiment, and is applied to a helical gear, a helical gear, a worm wheel, a bevel gear, a face gear, a rack, and the like. it can.
- the fiber reinforced resin gear 1 of the present invention is not limited to the shape of the spur gear in FIG. 1 but can be applied to spur gears of various shapes.
- the fiber reinforced resin gear 1 of the present invention is made of glass wool obtained by making glass fiber of C glass or E glass by a centrifugal method, but it is preferable to use glass wool made of glass fiber of C glass by a centrifugal method. .
- Glass wool made from glass fiber by centrifugation of C glass has a lower elastic modulus than glass wool made from glass fiber from E glass by centrifugal method, and the attack on the mating gear (fiber reinforced resin gear 1) is centrifugal. This is because it is lower than glass wool that is made into glass fiber by the method.
- the glass wool content with respect to the base resin is in the range of 10 to 50% by weight, and the optimum glass wool content according to the use conditions is determined.
- the glass wool content with respect to the base resin is selected in the range of 20 to 50% by weight and 30 to 50% by weight.
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Abstract
Description
図1は、本実施形態に係る繊維強化樹脂歯車1を示す図である。この繊維強化樹脂歯車1は、グラスウールを含有する樹脂材料(例えば、ポリアミド(PA)、ポリアセタール(POM)、ポリフェニレンサルファイド(PPS)、ポリフタルアミド(PPA)、ポリエーテルイミド、ポリエーテルスルフォン、ポリケトン、ポリエーテルエーテルケトン、ポリスルフォン、ポリフェニレンエーテル、ポリイミド、ポリアミドイミド、フェノキシ等の熱可塑性樹脂、好ましくはPA、POM、PPS、PPA等)が金型のキャビティ内に射出されることにより成形されたものであり、円板状のウエブ2の外周側にリム3が形成されると共にリム3の外周側に複数の歯4(図1では一つのみ図示)が形成され、軸穴5を備えた軸嵌合部6がウエブ2の中心部に形成されている。
次に、本実施形態に係る繊維強化樹脂歯車1の試作品の耐久試験及び摩耗試験の結果を、従来品の耐久試験及び摩耗試験の結果と対比して説明する。
(第1の試作品)
第1の試作品は、グラスウール(Cガラスを遠心法でガラス繊維化したもの)を33重量%含有するポリアミド(PA66)が金型のキャビティ内に射出されることにより成形された平歯車であり、図1に示した繊維強化樹脂歯車と同様の形状に形成されている。そして、この第1の試作品は、モジュール1、圧力角20°、歯数30枚の標準インボリュート平歯車である。
第2の試作品は、グラスウール(Cガラスを遠心法でガラス繊維化したもの)を43重量%含有するポリアミド(PA66)が金型のキャビティ内に射出されることにより成形された平歯車であり、図1に示した繊維強化樹脂歯車と同様の形状に形成されている。そして、この第2の試作品は、第1の試作品と同様に、モジュール1、圧力角20°、歯数30枚の標準インボリュート平歯車である。
第3の試作品は、グラスウール(Cガラスを遠心法でガラス繊維化したもの)を33重量%含有するポリアミド(PA66)が金型のキャビティ内に射出されることにより成形された平歯車であり、図1に示した繊維強化樹脂歯車と同様の形状に形成されている。そして、この第3の試作品は、第1の試作品と同様に、モジュール1、圧力角20°、歯数30枚の標準インボリュート平歯車である。
(第1の従来品)
第1の従来品は、ガラス長繊維を33重量%含有するポリアミド(PA66)が金型のキャビティ内に射出されることにより成形された平歯車であり、図1に示した繊維強化樹脂歯車1と同様の形状に形成されている。そして、この第1の従来品は、上記第1の試作品と同様に、モジュール1、圧力角20°、歯数30枚の標準インボリュート平歯車である。なお、この第1の従来品において、ガラス長繊維を33重量%含有するポリアミド(PA66)は、旭化成株式会社のレオナ(登録商標)1300Gに対応する。この第1の従来品に使用されるガラス長繊維の繊維径は、13μm(実測値)であった。
第2の従来品は、ガラス長繊維を43重量%含有するポリアミド(PA66)が金型のキャビティ内に射出されることにより成形された平歯車であり、図1に示した繊維強化樹脂歯車1と同様の形状に形成されている。そして、この第2の従来品は、上記第2の試作品と同様に、モジュール1、圧力角20°、歯数30枚の標準インボリュート平歯車である。なお、この第2の従来品において、ガラス長繊維を43重量%含有するポリアミド(PA66)は、旭化成株式会社のレオナ(登録商標)13G43に対応する。この第2の従来品に使用されるガラス長繊維の繊維径は、13μm(実測値)であった。
第3の従来品は、ガラス長繊維を33重量%含有するポリアミド(PA66)が金型のキャビティ内に射出されることにより成形された平歯車であり、図1に示した繊維強化樹脂歯車1と同様の形状に形成されている。そして、この第3の従来品は、上記第3の試作品と同様に、モジュール1、圧力角20°、歯数30枚の標準インボリュート平歯車である。なお、この第3の従来品において、ガラス長繊維を33重量%含有するポリアミド(PA66)は、デュポン株式会社のザイテル(登録商標)70G33Lに対応する。この第3の従来品に使用されるガラス長繊維の繊維径は、10μm(実測値)であった。
(第1の耐久試験)
この第1の耐久試験は、一対の第1の試作品同士、一対の第1の従来品同士を噛み合わせた状態で行うようになっており、130℃の高温環境下で、250rpmの回転数で、且つ1.5Nmの試験トルクを負荷し、歯面にグリース(東レ・ダウコーニング株式会社:EM-50L)を塗布した状態で、歯が破損(破壊)するまで行った。表2は、この第1の耐久試験の結果を示すものである。
この第2の耐久試験は、一対の第2の試作品同士、一対の第2の従来品同士を噛み合わせた状態で行うようになっており、130℃の高温環境下で、1000rpmの回転数で、且つ0.4Nmの試験トルクを負荷し、歯面にグリース(東レ・ダウコーニング株式会社:EM-50L)を塗布した状態で、歯が破損(破壊)するまで行った。表3は、この第2の耐久試験の結果を示すものである。
(第1の摩耗試験)
この第1の摩耗試験は、上記第1の耐久試験と同様の一対の第1の試作品同士、一対の第1の従来品同士を噛み合わせた状態で行うようになっており、130℃の高温環境下で、250rpmの回転数で、且つ1Nmの試験トルクを負荷し、歯面にグリース(東レ・ダウコーニング株式会社:EM-50L)を塗布した状態で、48時間(噛み合い回数:7.2×105回)連続して行った。
この第2の摩耗試験は、上記第2の耐久試験と同様の一対の第2の試作品同士、一対の第2の従来品同士を噛み合わせた状態で行うようになっており、130℃の高温環境下で、250rpmの回転数で、且つ0.8Nmの試験トルクを負荷し、歯面にグリース(東レ・ダウコーニング株式会社:EM-50L)を塗布した状態で、48時間(噛み合い回数:7.2×105回)連続して行った。
この第3の摩耗試験は、一対の第3の試作品同士、一対の第3の従来品同士を噛み合わせた状態で行うようになっており、130℃の高温環境下で、250rpmの回転数で、且つ1Nmの試験トルクを負荷し、歯面にグリース(東レ・ダウコーニング株式会社:EM-50L)を塗布した状態で、48時間(噛み合い回数:7.2×105回)連続して行った。
Claims (1)
- グラスウールを含有する樹脂材料が金型のキャビティ内に射出されることにより成形された繊維強化樹脂歯車であって、
前記グラスウールは、繊維径が0.1~15μmの範囲で広く分散し、且つ、繊維径の最頻値が2~5μmの間で出現するように分布し、平均繊維径が3~5μmのものが使用された、
ことを特徴とする繊維強化樹脂歯車。
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CN201480020912.3A CN105121909B (zh) | 2013-04-18 | 2014-04-15 | 纤维强化树脂齿轮 |
JP2015512485A JP6161689B2 (ja) | 2013-04-18 | 2014-04-15 | 繊維強化樹脂歯車 |
US14/784,068 US10012303B2 (en) | 2013-04-18 | 2014-04-15 | Fiber-reinforced resin gear |
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JP2013-087115 | 2013-04-18 | ||
JP2013087115 | 2013-04-18 |
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WO2014171450A1 true WO2014171450A1 (ja) | 2014-10-23 |
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PCT/JP2014/060714 WO2014171450A1 (ja) | 2013-04-18 | 2014-04-15 | 繊維強化樹脂歯車 |
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US (1) | US10012303B2 (ja) |
JP (1) | JP6161689B2 (ja) |
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WO (1) | WO2014171450A1 (ja) |
Cited By (1)
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JP2016200185A (ja) * | 2015-04-08 | 2016-12-01 | 株式会社ジェイテクト | ギヤ |
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KR102395672B1 (ko) * | 2015-12-15 | 2022-05-11 | 주식회사 만도 | 전동식 조향장치의 감속기 |
ES2961968T3 (es) * | 2017-09-25 | 2024-03-14 | Ims Gear Se & Co Kgaa | Rueda cilíndrica de dientes rectos para usar en un engranaje recto, par de ruedas dentadas para un engranaje recto, engranaje recto con un par de ruedas dentadas de este tipo, así como un procedimiento para fabricar una rueda cilíndrica de dientes rectos |
CN111971491B (zh) | 2018-04-23 | 2024-01-16 | 旭化成株式会社 | 含有纤维素的齿轮 |
CN109735051A (zh) * | 2019-01-03 | 2019-05-10 | 漳州优普激光科技有限公司 | 一种高强耐磨陶瓷塑料齿轮及其制备方法 |
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- 2014-04-15 US US14/784,068 patent/US10012303B2/en not_active Expired - Fee Related
- 2014-04-15 CN CN201480020912.3A patent/CN105121909B/zh not_active Expired - Fee Related
- 2014-04-15 WO PCT/JP2014/060714 patent/WO2014171450A1/ja active Application Filing
- 2014-04-15 JP JP2015512485A patent/JP6161689B2/ja not_active Expired - Fee Related
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JP6161689B2 (ja) | 2017-07-12 |
US10012303B2 (en) | 2018-07-03 |
CN105121909A (zh) | 2015-12-02 |
JPWO2014171450A1 (ja) | 2017-02-23 |
CN105121909B (zh) | 2019-06-18 |
US20160047453A1 (en) | 2016-02-18 |
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