Analysis for Coupling Relationship of Oil Pocket under Eccentric Load in Hydrostatic Worktable
The oil pocket of the hydrostatic worktable in the modem heavy numerical control (NC)machine tools is designed under the circumstance that the working load acts equally on the oil pockets.But when the work piece is out of the rotary center of the worktable,the working load acts unequally on the oil pockets,and then the performance indexes for the oil pockets,such as acting force,oil film thickness,hydraulic damping,rated flow,are different.Based on the eccentric working load,under the circumstance that the oil pocket provides the fluid oil with and constant pressure mode,the coupling relationship between the oil pockets is analyzed,and the expression and the relatively bar graphics are presented.To achieve the machining quality and to prevent against the totally worn-out of the machine tools,it is best to adjust one oil pocket in order to keep the oil film of all oil pockets at the same thickness.While one oil pocket is adjusted,the oil pockets are intercoupling,and then the performance indexes change synchronously.According to the characteristics of the oil pocket in the hydrostatic worktable,the expression on the coupling relationship for the oil pocket is derived,then the performance indexes are analyzed qualitatively and the curves are plotted.The proposed research analyzed qualitatively the coupling relationship on the performance indexes for the constant pressure oil pockets separately in the worktable.It can improve the design efficiency and the accuracy with the help of the computer programs,and provides the reference for the practical engineering.
Hydrostatic worktable Constant pressure oil pocket Performance indexes Coupling relationship Computer program
ZHAO Jianhua GAO Dianrong
College of Mechanical Engineering,Yanshan University,Qinhuangdao,P.R.China
国际会议
重庆
英文
28-34
2012-11-10（万方平台首次上网日期，不代表论文的发表时间）