- 专利标题: METHOD FOR MANUFACTURING MAGNETIC ENCODER
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申请号: US15311379申请日: 2015-05-18
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公开(公告)号: US20170082456A1公开(公告)日: 2017-03-23
- 发明人: Kazushi SAKATE , Tadashi KASAMOTO , Tatsuo KATAYAMA
- 申请人: UCHIYAMA MANUFACTURING CORP.
- 申请人地址: JP Okayama-shi, Okayama
- 专利权人: UCHIYAMA MANUFACTURING CORP.
- 当前专利权人: UCHIYAMA MANUFACTURING CORP.
- 当前专利权人地址: JP Okayama-shi, Okayama
- 优先权: JP2014-102827 20140516
- 国际申请: PCT/JP2015/064243 WO 20150518
- 主分类号: G01D5/14
- IPC分类号: G01D5/14 ; B29C35/02 ; B29C45/00
摘要:
Provided is a method for a magnetic encoder having a magnetic body comprised of a magnetic rubber molded article, comprising a mixing step of mixing and then kneading a nitrile rubber (A), a ferrite magnetic powder (B) and a vulcanizing agent (C) to provide a magnetic rubber composition; and a molding step of molding and vulcanizing the magnetic rubber composition in a mold to which a magnetic field is applied to provide the magnetic rubber molded article, wherein a content of the ferrite magnetic powder (B) is 700 to 1500 parts by mass based on 100 parts by mass of the nitrile rubber (A); and a compressed density of the ferrite magnetic powder (B) is 3.5 g/cm3 or more. According to this method, a magnetic encoder having a magnetic body with high coercivity and residual magnetic flux density can be produced by vulcanizing a magnetic rubber composition having favorable moldability.
公开/授权文献
- US10203222B2 Method for manufacturing magnetic encoder 公开/授权日:2019-02-12