BOLT TIGHTENING METHOD AND BOLT TIGHTENING DEVICE

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...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIOKA, YASUO, SAKURABAYASHI, YASUNORI, TERANISHI, HIROSHI, TANAKA, ATSUO, SATO, KAZUAKI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING COMBINED OPERATIONS DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAND TOOLS HEATING LIGHTING MACHINE TOOLS MANIPULATORS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS THERMAL INSULATION IN GENERAL TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS
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Beschreibung
Zusammenfassung:	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.