Title:
METHOD FOR PRODUCING MEMBER HAVING BOTTOMED HOLE, AND WORKING TOOL
Document Type and Number:
WIPO Patent Application WO/2011/093482
Kind Code:
A1
Abstract:
Provided is a method for producing a member having a bottomed hole wherein a two-point supported cutting wire is used to form a hollowed out bottom portion, so that yield of a material is good, durability as a cutting blade can be increased, a force required for the work can be extremely reduced relative to conventional methods; and also provided is a working tool. The production method comprising a process of hollowing a material made of a carbon-based material so as to produce a member having a bottomed hole provided with a hollowed-out side portion and a hollowed-out bottom portion formed by hollowing out the inside of the material; wherein the method comprises a step for forming a cylindrical groove by forwardly drilling the material from the front side end surface while the material is rotated, in order to form the hollowed-out side portion; and a step of forming a hollowed-out bottom portion by supporting, at two points, the cutting wire inserted to the bottom portion of the cylindrical groove and pressing the two-point supported cutting wire in the direction approaching the axis of the material while the material is rotated.
Inventors:
TAKAHASHI, Toshiaki (2791, Matsusaki, Takuma-cho, Mitoyo-sh, Kagawa 02, 〒7691102, JP)
Application Number:
JP2011/051856
Publication Date:
August 04, 2011
Filing Date:
January 31, 2011
Export Citation:
Assignee:
TOYO TANSO CO., LTD. (7-12, Takeshima 5-chome Nishiyodogawa-ku, Osaka-sh, Osaka 11, 〒5550011, JP)
東洋炭素株式会社 (〒11 大阪府大阪市西淀川区竹島５丁目７番１２号 Osaka, 〒5550011, JP)
東洋炭素株式会社 (〒11 大阪府大阪市西淀川区竹島５丁目７番１２号 Osaka, 〒5550011, JP)
International Classes:
B28D5/02; B23B51/04
Attorney, Agent or Firm:
KITADAI, Tetsuo et al. (7-12-5-605, Nishinakajima Yodogawa-ku, Osaka-sh, Osaka 11, 〒5320011, JP)
Claims: