The computation results show that there exists serious stress concentration on the fractured section of the shaft . The main reasons of high frequency fatigue fracture of the shaft are that the small transition radius and the tensile stress caused by the tightening torque of the bolt .

结果表明，花键轴断裂处存在严重的应力集中，花键轴断裂处过渡圆弧半径过小以及未对 螺栓 拧紧力进行控制是导致轴产生高周疲劳破坏的主要原因。

Control on Abnormal Bolt Tightening in Bolt Torque Tightening Method

螺栓力矩拧紧法 拧紧异常的控制

Research of tightening technology for cylinder head bolt

发动机缸盖 螺栓 拧紧工艺研究

This paper mainly discusses the design and development of the intelligent controlling system that is used in screw tightening . Introduction to construction method of fastening bolt on the lap surface of duralumin busbar

介绍了电动螺栓 紧固机-单片机控制装置的开发与设计。硬铝母线搭接面 螺栓紧固的施工方法探讨

Study on Tightening Moment Test of Joint Bolt in Sandwich of Composites

复合材料夹层连接 螺栓 拧紧力矩试验研究

Generally through tightening torque to control the preload of bolt but this method produces large error and can not be precise controlled .

一般通过 调整力矩来控制 螺栓的预紧力，但是这种方法误差较大，不能实现精确控制。

The Calculation of the Pre tightening Force of Ordinary Bolt Connections with Lateral Load and Torsional Moment

普通 螺栓组（R和T作用）联接预 紧力计算方法

The purpose of research on the technology of tightening bolts on engines is to identify if the specified bolt pre-tightening requirement can be met when the bolts are tightened by different methods with the special equipment ( such as automatic bolt tightening machine ) .

发动机螺栓 拧紧技术的研究是指在使用专门设备（如螺栓自动拧紧机）的情况下，对采用不同的拧紧方法紧固螺栓，能否达到规定预紧 力要求的研究。

Tightening Midsplit Bolt of Turbo-Blower Casing by Hydraulic Stretch Method

液压拉伸法 紧固透平风机机壳中分面 螺栓

Finally the stability of friction coefficient and the tightening attribute of bolt fastening were improved which based on the results of theoretical analysis and experimental research .

最后利用理论分析和实验研究成果，提高了电镀锌 螺栓摩擦系数稳定性，同时改善了电镀锌 螺栓紧固性能。

Application of Ultrasonic Detector to Testing and Measuring the Axial Force of Bolt in the Operation of Tightening the High Strength Bolt

超声 螺栓轴力测试仪在螺栓施 拧检验中的应用

The utility model is not easy to loose and rotate after tightening so as to effectively improve the service life of the hub bolt and the hub .

本实用新型在 拧 固后不易松动旋转，有效地提高了轮毂 螺栓和轮毂的使用寿命。

The value of tightening torque is relative not only to the nominal diameter and quality class of the bolt but also to the security of the threaded fastener .

指出 螺栓 联接 的 扭紧力矩值不仅与 螺栓的公称直径及性能等级有关，还与能否保证联接可靠工作有关。

Through the analysis to the test re-sults how to set up a reasonable tightening process for cylinder head bolt is expounded .

通过试验分析，阐述了如何合理地制定缸盖 螺栓 的 拧紧工艺。