Direct Control and Measurement of Clamp Force for Bolted Joint
ボルト締結体の締付け軸力の直接管理
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20224254
- Paper/Info type
- Journal of Society of Automotive Engineers of Japan
Vol.76 No.4
- Pages
- 64-71(Total 8 p)
- Date of publication
- Apr 2022
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | くるまは「ねじ」で出来ている Translation |
|---|---|
| Category(E) | Cars are made with Screws! |
| Author(J) | 1) 橋村 真治 |
| Author(E) | 1) Shinji Hashimura |
| Affiliation(J) | 1) 芝浦工業大学 |
| Abstract(J) | ボルト締結体における疲労破壊とゆるみは締付け軸力に大きく依存する．したがって，ボルト締結体の信頼性を確保するためには，締付け軸力を正確に管理することが最も重要である．本稿では，これまでに著者らが提案したボルト・ナット締結体の締付け軸力検出法と，その原理を応用した締付け法について紹介する． Translation |
| Abstract(E) | In bolted joints and bolt/nut assemblies, the most important parameter is clamp force because bolt fatigue failures and bolt loosening significantly depend on the clamp force. However, it is not easy to control and maintain the clamp force in the tightening process and in service because we cannot measure the clamp force for each bolt during the tightening process and after tightening. In our laboratory, we proposed two methods to measure the clamp force after tightening and to tighten the bolt/nut assembly with the appropriate clamp force. In these methods, a protruding bolt thread portion from a nut is pulled with the nut upper surface supported. The method to measure the clamp force after tightening uses the relationship between the pulling force and the displacement at the loading point, and the clamp force is detected by an inclination change of the pulling force against the displacement. In the method to tighten the bolt/nut assembly with the appropriate the clamp force, after the protruding bolt thread portion is pulled with the target clamp force, the nut is tightened while measuring the relationship between the pulling force and the displacement at the loading point. Here, I explain the introductions of the methods and these experimental results. |
