Breakaway Force Reduction in Pneumatic Cylinders utilizing Ultrasound

利用超声波降低气缸的起步力

• 批准号: 280032959
• 负责人: Dr.-Ing. Jens Twiefel
• 金额: --
• 依托单位: Institut für Dynamik und Schwingungen (IDS)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/280032959?language=en
• 关键词: Breakaway; Force; Reduction; Pneumatic; Cylinders

Using pneumatic cylinders as actuators is desirable in a variety of applications requiring smooth and accurate start-ups. Though this approach can not be sufficiently realized since high adhesive forces between piston and seal cause high breakaway forces. Exploring different possible solutions has not yet led to an optimal operational behavior. On the contrary, these approaches introduce negative side-effects achieving only limited improvement considering the problem stated above. However, an alternative and innovative technology to reduce the breakaway forces can be found in superimposing the process with high-frequency ultrasonic vibrations. The promising potential of this implementation concept has already been examined at the Institute of Dynamics and Vibration Research by executing several pre-tests. Depiction and validation of the breakaway force reduction by superimposing ultrasonic vibrations thus are to be carried out within the framework of the submitted research project. Own expertise and the pre-tests as well as research work of other academics provide the basis for this intention. Therefore, developing a fundamental proof of technical usefulness is the main project objective. Thus experimental studies as well as model-based description of contact mechanics in consideration of material properties, seal characteristics and ultrasonic vibration attributes will be carried out. Compiling standard procedures for designing friction reduction systems with a plastic-metal-contact will be executed by usage of the gained results and expertise. Development of a fully functional ultrasonic assisted pneumatic cylinder for validation of the design guideline will conclude the research project.

在需要平稳，准确的启动的各种应用中，使用气动缸作为执行器是可取的。尽管这种方法无法充分实现，因为活塞和密封之间的高粘合力会导致高裂隙力。探索不同的解决方案尚未导致最佳的操作行为。相反，考虑到上述问题，这些方法引入了负面副作用，仅实现有限的改进。但是，可以在高频超声振动中叠加过程中可以找到一种减少脱离力的替代和创新技术。该实施概念的有希望的潜力已经在动态与振动研究所进行了检查，通过执行几项预测试。因此，将在提交的研究项目的框架内进行叠加超声振动来描述和验证分离力量减少。自己的专业知识和预测试以及其他学者的研究工作为这一意图提供了基础。因此，开发技术实用性的基本证明是主要项目目标。因此，将进行实验研究以及基于模型的接触力学描述，以考虑材料特性，密封特性和超声振动属性。通过使用获得的结果和专业知识，将执行用于使用塑料金属接触设计摩擦系统的标准程序。开发功能齐全的超声辅助气缸来验证设计指南将结束研究项目。