摘要
在构建旋回流非接触式气爪几何模型和控制方程的前提下,对气爪内部流场特征及影响其吸附性能的关键参数进行数值分析。结果表明:单进气口的气爪,负压中心与气爪的几何中心存在偏移,并且,在回旋流向下运动的同时,负压中心也会随之发生迁移;当气爪的几何参数、工作条件为定值时,存在最适宜的气膜间隙,可使负压值和吸附力达到峰值;双进气口的气爪比单进气口的气爪具备更好的吸附稳定性;在单进气口气爪的气室内增加螺纹式凹槽,可在一定程度上提高吸附稳定性。
The numerical analysis of the gripper internal flow field characteristics and the key parameters affecting its absorption performance was conducted by constructing the geometry model and the governing equation of the noncontact vortex gripper.The results show that：to the single air-inlet gripper,the negative pressure center coincides with its geometric center.Besides,the negative pressure center will migrate with the downward motion of the swirling flow; when the geometric parameter and working condition of the gripper are fixed,there exists the most suitable gap of the gas film,which can make the negative pressure value and adsorption capacity reach the peak ; compared with the singe air-inlet gripper,the double air-inlet gripper has the better adsorption stability; increasing the thread groove inside the gripper chamber can improve the adsorption stability to a certain extent.
出处
《液压与气动》
北大核心
2014年第4期7-10,共4页
Chinese Hydraulics & Pneumatics
基金
宁波市自然科学基金(2013A610049)
宁波市科技服务业示范项目(2012F1101)
关键词
气爪
旋回流
非接触式搬运
吸附性能
数值分析
gripper
swirling flow
non-contact handling
adsorption performance
numerical analysis
作者简介
郭丽丽（1979-）,女,陕西扶风人,工程师,学士,主要从事气动、液压系统的数值模拟、优化设计及监督检验工作.
