BOLT TIGHTENING METHOD AND BOLT TIGHTENING DEVICE

Title:

BOLT TIGHTENING METHOD AND BOLT TIGHTENING DEVICE

Document Type and Number:

WIPO Patent Application WO/2006/126742

Kind Code:

A1

Abstract:

A bolt tightening method capable of bringing about a same effect without changing the coefficient of friction of the thread surface of a bolt as in a case where the coefficient of friction of the thread surface of the bolt is reduced to increase the axial force of the bolt provided when the bolt is tightened and a bolt tightening device capable of realizing the bolt tightening method. The bolt tightening method using the bolt having a bolt head part and a bolt shaft part with a male screw part for tightening a tightened body is characterized by comprising a step for tightening the bolt by imparting a torque for rotating the male screw part to the bolt head part in such a state that a lateral load parallel with the seat face of the bolt is imparted to the head part of the bolt to intentionally deviate, from each other, the surface pressures on the thread surface and the seat surface of the bolt provided when the bolt is tightened.

Inventors:

FUJIOKA YASUO (JP)
SATO KAZUAKI (JP)
SAKURABAYASHI YASUNORI (JP)
TERANISHI HIROSHI (JP)
TANAKA ATSUO (JP)

Application Number:

PCT/JP2006/311040

Publication Date:

November 30, 2006

Filing Date:

May 26, 2006

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
FUJIOKA YASUO (JP)
SATO KAZUAKI (JP)
SAKURABAYASHI YASUNORI (JP)
TERANISHI HIROSHI (JP)
TANAKA ATSUO (JP)

International Classes:

B23P19/06; B25B23/14; F16B35/00; F16B39/284

Foreign References:

JP2001012432A	2001-01-16
JP2004176901A	2004-06-24
JPS4721648B1	1972-06-19
JP3081174U	2001-10-26
JPH02224934A	1990-09-06
JPH1058248A	1998-03-03
JPH0940991A	1997-02-10
EP0293765A1	1988-12-07
JP2000135636A	2000-05-16

Other References: