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Patent Searching and Data


Title:
ROTARY TOOL BIT AND ROTARY TOOL BIT MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2011/105558
Kind Code:
A1
Abstract:
Provided is a rotary tool bit such that a soft core body having hardness lower than that of a hardened layer formed by applying plasma carburization to the entire surface of the bit, is disposed inside said hardened layer, and that thereby while wear resistance is improved, local stress concentration can be prevented, with the internal soft core body used as a cushion. In other words the rotary tool bit (1) is such that there is formed the hardened layer (2), which is formed by applying plasma carburization to the entire surface (S) of the bit, and that the soft core body (3) having hardness lower than that of the hardened layer (2) is made to exist inside the hardened layer (2), with the result that it became possible to improve wear resistance.

Inventors:
TAGUCHI Yasuaki (14-22, Suwa 2-chome, Joto-ku, Osaka-sh, Osaka 21, 〒5360021, JP)
田口 康明 (〒21 大阪府大阪市城東区諏訪2丁目14番22号 株式会社ベッセル工業内 Osaka, 〒5360021, JP)
Application Number:
JP2011/054322
Publication Date:
September 01, 2011
Filing Date:
February 25, 2011
Export Citation:
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Assignee:
VESSEL INDUSTRIAL CO., LTD. (17-25, Fukaekita 2-chome Higashinari-ku, Osaka-sh, Osaka 01, 〒5370001, JP)
株式会社ベッセル工業 (〒01 大阪府大阪市東成区深江北2丁目17番25号 Osaka, 〒5370001, JP)
TAGUCHI Yasuaki (14-22, Suwa 2-chome, Joto-ku, Osaka-sh, Osaka 21, 〒5360021, JP)
International Classes:
B25B21/00; B25B15/00
Foreign References:
JP2002036135A2002-02-05
JP2002294396A2002-10-09
JP2004010979A2004-01-15
Attorney, Agent or Firm:
YASUDA Toshio et al. (YASUDA & OKAMOTO, 7 & 6th Floor Shori Building, 7-19, Takaida-hondori 7-chome, Higashi-Osaka-sh, Osaka 66, 〒5770066, JP)
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Claims: