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1. WO2020116370 - GEAR MANUFACTURING METHOD AND REDUCTION GEAR

Publication Number WO/2020/116370
Publication Date 11.06.2020
International Application No. PCT/JP2019/046944
International Filing Date 02.12.2019
IPC
B29C 45/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
F16H 1/46 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
1Toothed gearings for conveying rotary motion
28with gears having orbital motion
46Systems consisting of a plurality of gear trains, each with orbital gears
B29C 71/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
71After-treatment of articles without altering their shape; Apparatus therefor
02Thermal after-treatment
F16H 55/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
55Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
02Toothed members; Worms
06Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
CPC
B29C 45/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
B29C 71/02
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
71After-treatment of articles without altering their shape; Apparatus therefor
02Thermal after-treatment
F16H 1/46
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
1Toothed gearings for conveying rotary motion
28with gears having orbital motion
46Systems consisting of a plurality of gear trains each with orbital gears, ; i.e. systems having three or more central gears
F16H 55/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
55Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves
02Toothed members; Worms
06Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
Applicants
  • 日本電産株式会社 NIDEC CORPORATION [JP]/[JP]
Inventors
  • 岸野 樹哉 KISHINO,Tatsuya
  • 清水 猛 SHIMIZU,Takeshi
  • 小川 隆雄 OGAWA,Takao
Priority Data
2018-22795005.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) GEAR MANUFACTURING METHOD AND REDUCTION GEAR
(FR) PROCÉDÉ DE FABRICATION D'ENGRENAGE ET ENGRENAGE DE RÉDUCTION
(JA) ギアの製造方法および減速機
Abstract
(EN)
Provided are a gear manufacturing method with which a gear having superior mechanical strength and shape stability can be manufactured with high yield, and a reduction gear comprising a gear manufactured by said gear manufacturing method. In this gear manufacturing method, a gear is manufactured using a resin composition containing a crystalline resin and a filler. The gear manufacturing method comprises: a step for melting the resin composition; a step for supplying the resin composition in a molten state to a molding die set to a temperature 5-25°C lower than the glass transition temperature of the crystalline resin so as to obtain a molded body having a shape corresponding to the gear; and a step for heat treating the molded body at a temperature higher than the crystallization temperature of the crystalline resin so as to obtain the gear.
(FR)
L'invention se rapporte à un procédé de fabrication d'engrenage avec lequel un engrenage ayant une résistance mécanique et une stabilité de forme supérieures peut être fabriqué avec un rendement élevé, ainsi qu'à un engrenage de réduction comprenant un engrenage fabriqué par ledit procédé de fabrication d'engrenage. Dans ce procédé de fabrication d'engrenage, un engrenage est fabriqué à l'aide d'une composition de résine contenant une résine cristalline et une charge. Le procédé de fabrication d'engrenage comprend : une étape consistant à faire fondre la composition de résine ; une étape consistant à amener la composition de résine dans un état fondu à un ensemble de matrices de moulage à une température de 5 à 25 °C inférieure à la température de transition vitreuse de la résine cristalline de façon à obtenir un corps moulé ayant une forme correspondant à l'engrenage ; et une étape de traitement thermique du corps moulé à une température supérieure à la température de cristallisation de la résine cristalline de façon à obtenir l'engrenage.
(JA)
機械的強度および形状安定性に優れるギアを高い歩留まりで製造し得るギアの製造方法、およびかかるギアの製造方法により製造されたギアを備える減速機を提供する。本発明のギアの製造方法は、結晶性樹脂と充填剤とを含有する樹脂組成物を用いてギアを製造する方法である。このギアの製造方法は、前記樹脂組成物を溶融する工程と、前記溶融状態の樹脂組成物を、前記結晶性樹脂のガラス転移温度より5~25℃低い温度に設定した成形型に供給して、前記ギアに対応する形状を有する成形体を得る工程と、前記成形体を、前記結晶性樹脂の結晶化温度より高い温度で熱処理して、前記ギアを得る工程とを有する。
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