Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TAP WITH DRILL
Document Type and Number:
WIPO Patent Application WO/2010/095249
Kind Code:
A1
Abstract:
Disclosed is a tap with a drill wherein three drill blades (26) and three threading edges (24) are respectively provided, three oil holes (28) are provided to penetrate in the axial direction, the core diameter (W) is set in a range of 0.25Dt-0.33Dt, a chip discharge groove (22) is provided with a negative land (22a) swelling into the groove, and since both the radial rake angle (φ1) at the outer circumference of the drill blade (26) and the radial rake angle (φ2) of the threading edge (24) are negative, a female screw (52) can be continuously cut practically while a rough hole (50) is cut under a state of being decentered from a hole-as-cast (46) by synergistic effect thereof even if the pressure of cutting fluid being supplied through the oil hole (28) is as low as 2 MPa or less.

Inventors:
TAKAGI, Akira (149 Miyamae, Ichinomiya-cho Toyokawa-sh, Aichi 31, 44112, JP)
高木 啓 (〒31 愛知県豊川市一宮町宮前149 オーエスジー株式会社内 Aichi, 44112, JP)
NOJIRI, Masatoshi (149 Miyamae, Ichinomiya-cho Toyokawa-sh, Aichi 31, 44112, JP)
野尻 政敏 (〒31 愛知県豊川市一宮町宮前149 オーエスジー株式会社内 Aichi, 44112, JP)
MASUDA, Norihiro (149 Miyamae, Ichinomiya-cho Toyokawa-sh, Aichi 31, 44112, JP)
Application Number:
JP2009/053080
Publication Date:
August 26, 2010
Filing Date:
February 20, 2009
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
OSG CORPORATION (22 Honnogahara 3-chome, Toyokawa-shi Aichi, 05, 44200, JP)
オーエスジー株式会社 (〒05 愛知県豊川市本野ヶ原三丁目22番地 Aichi, 44200, JP)
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 47185, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町1番地 Aichi, 47185, JP)
TAKAGI, Akira (149 Miyamae, Ichinomiya-cho Toyokawa-sh, Aichi 31, 44112, JP)
高木 啓 (〒31 愛知県豊川市一宮町宮前149 オーエスジー株式会社内 Aichi, 44112, JP)
NOJIRI, Masatoshi (149 Miyamae, Ichinomiya-cho Toyokawa-sh, Aichi 31, 44112, JP)
International Classes:
B23G5/20; B23B51/08
Domestic Patent References:
WO2008102445A1
Foreign References:
JPH10118845A
JPH10100020A
JP2006263912A
JPS6389211A
JP2002126926A
JPS50156790A
JPH10100020A
Other References:
See also references of EP 2399700A1
Attorney, Agent or Firm:
IKEDA, Haruyuki (Ikeda Patent Office, Nagoya-Dia. Bldg. No.2 15-1 Meieki 3-chome, Nakamura-ku, Nagoya-sh, Aichi 02, 45000, JP)
Download PDF: