Title:
GEAR MANUFACTURING METHOD AND REDUCTION GEAR
Document Type and Number:
WIPO Patent Application WO/2020/116370
Kind Code:
A1
Abstract:
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.
More Like This:
| JPH02192919 | MOLDING METHOD FOR SPHERE |
| JPS62268617 | METHOD AND DEVICE FOR MANUFACTURING THREAD CUTTING TYPE COVER |
Inventors:
KISHINO TATSUYA (JP)
SHIMIZU TAKESHI (JP)
OGAWA TAKAO (JP)
SHIMIZU TAKESHI (JP)
OGAWA TAKAO (JP)
Application Number:
PCT/JP2019/046944
Publication Date:
June 11, 2020
Filing Date:
December 02, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
B29C45/00; B29C71/02; F16H1/46; F16H55/06
Foreign References:
| JP2002213332A | 2002-07-31 | |||
| JP2007246561A | 2007-09-27 | |||
| JP2017214520A | 2017-12-07 | |||
| JP2003253115A | 2003-09-10 | |||
| JP2013010847A | 2013-01-17 |
Download PDF:
Previous Patent: LIQUID CRYSTAL DISPLAY DEVICE
Next Patent: GEARED SHAFT PRODUCTION METHOD, AND DRIVE DEVICE
Next Patent: GEARED SHAFT PRODUCTION METHOD, AND DRIVE DEVICE