Title:
ねじの製造方法、ワーリングカッタ、及びねじ製造装置
Document Type and Number:
Japanese Patent JP4763862
Kind Code:
B2
Abstract:
A screw manufacturing method by thread whirling machining and others are provided which can solve problems due to thread rolling and cutting and which inhibits moving paths of inserts from interfering with a curved line of a desired screw upon going in and out, thereby providing the screw with a targeted curved line. In the method of manufacturing a screw, a mount angle of the screw is calculated by formulae below in case that a lead angle of the screw is different from the mount angle. mount angle=tan−1{n×pitch/(π×D1)} (1) D1={(screw valley diameter+screw outer diameter)/2}+ΔT (2) screw valley diameter≰D1≰screw outer diameter (3) in case ΔT>0, {(screw outer diameter−screw valley diameter)/2}×0.2<ΔT<{(screw outer diameter−screw valley diameter)/2} (4) in case ΔT<0, −{(screw outer diameter−screw valley diameter)/2}<ΔT<−{(screw outer diameter−screw valley diameter)/2}×0.2 (5) where D1≠0, ΔT≠0, and n indicates a number of threads.
Inventors:
Kenji Isobe
Taku Koike
Ando Giju
Hiromichi Murata
Taku Koike
Ando Giju
Hiromichi Murata
Application Number:
JP2011511181A
Publication Date:
August 31, 2011
Filing Date:
December 24, 2010
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
B23G1/34; A61B17/58
Domestic Patent References:
| JPS63200915A | 1988-08-19 | |||
| JPH1058233A | 1998-03-03 | |||
| JP2008296311A | 2008-12-11 | |||
| JP2004237316A | 2004-08-26 |
Foreign References:
| US20040081519A1 | 2004-04-29 | |||
| DE3532282A1 | 1987-03-19 | |||
| DE4415236A1 | 1995-11-02 | |||
| DE2546262A1 | 1977-04-28 | |||
| US4016801A | 1977-04-12 |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation