Perfect Countermeasure against Pattern Formation Phenomena Generated in Contact Rotating Systems

针对接触旋转系统中产生的图案形成现象的完美对策

基本信息

批准号：
18360112
负责人：
SUEOKA Atsuo
金额：
$ 9.9万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360112/
关键词：
Self-excited Vibration Stability Modal Analysis Pattern Formation Polygonal Wear Dynamic Absorber Quenching of Pattern Formation BTA Cutting Polonal Wear 振動制御自励振動パターン形成現象接触回転系摩耗多角形摩耗安定性

项目摘要

This investigation deals with a countermeasure by using dynamic absorbers for polygonal wear of work rolls in a hot leveler of steel making machine and proposes the optimal design method of dynamic absorbers. In the case of the actual machine in which the contact rigidity between rolls and plate is comparatively soft, it was shown that the polygonal wear phenomena were all perfectly suppressed by two dynamic absorbers. An experimental equipment of a single degree-of-freedom pattern formation system with a pair of contact rotating rolls and a dynamic absorber are made. According to the results of the experiments without dynamic absorber, it is confirmed that the relation among the natural frequency of the system, the polygonal number and the rotating speed agree with the analytical results qualitatively. According to the results of the experiments using a damped dynamic absorber, the delaying effect of pattern formation is confirmed. Also, a good quantitative agreement between the exper … More imental and analytical results is confirmed. Moreover, it is confirmed that damping of a dynamic absorber is necessary to delay pattern formation phenomena.Next we deals with a countermeasure against pattern formation phenomena generated on film winder using dynamic absorbers. Pattern formation phenomena of the wound sheet sometimes occur in operation because of the viscoelastic characteristics of the film. The pattern formation phenomena lead to a fatal damage on the film. We conducted experiment to generate the pattern formation using experimental apparatus, and theoretically analyzed to clarify the mechanism of the pattern formation phenomena considering the elastic deformation of the rolls. They also theoretically examined the countermeasure to suppress the phenomena by attaching some dynamic absorbers. The effectiveness of the tunable dynamic absorbers was confirmed by the theoretical analysis.The pattern formation phenomena, namely, rifling marks in the BTA deep hole cutting process were treated experimentally and analytically. It was shown that the optimal angles among cutting edge and guides exited and the rifling marks were not generated for the optimally designed BTA. Less

在钢机和SES中使用的吸收器与吸收器的吸收室和动态吸收器的最佳设计方法。全部被两个动态吸收器抑制，以一对触点旋转卷和动态吸收器的单个自由度模式形成系统。旋转的速度与质量分析性ER相吻合。通过动态吸收器产生的胶片，有时是由于胶片的粘膜而进行的。通过理论分析确认了一些动态吸收器