首页>
外国专利>
NUT AND BOLT TIGHTENING METHOD AND TIGHTENING DEVICE
NUT AND BOLT TIGHTENING METHOD AND TIGHTENING DEVICE
展开▼
机译：螺母和螺栓拧紧方法和拧紧装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
[Problem] To make the tightening force resulting from a nut and bolt to have a target tightening force.[Solution] Provided is a nut and a bolt tightening method for fastening an object, wherein a tightening force is applied on the object by rotating a nut or a bolt in a state in which a predetermined tension force is applied on the bolt in the axial direction of the bolt. When the tensile force exerted on the bolt decreases as the tightening force increases and after a timing when an inflection point occurs in a time course change in a ratio of an amount of change in the tensile force exerted on the bolt to an amount of change in an angle of rotation of the nut or the bolt, the tightening resulting from the rotation of the nut or bolt is terminated and the tensile force applied on the bolt is removed.
展开▼
