薄膜反馈式节流器的结构设计
Structure Design Simulation and Verification of Thin-Film Feedback Choke
张楚鹏 1梅子进 1汤迎港1
作者信息
- 1. 湖北工业大学现代制造质量工程湖北省重点实验室,武汉 430068
- 折叠
摘要
薄膜反馈式节流器因反馈精度高,常被用于液体静压转台中.目前,国内液体静压转台高精度缺乏、需求激增,为了提高转台精度,设计了一种新型薄膜反馈式节流器,以获得稳定的高刚度油膜,并采用Ansys进行双向流固耦合分析,获得液压油的流速和压力分布;然后,对比PM流量控制器,结果表明随着入口压力的增加,两者的薄膜最大变形量均呈近似线性关系递增,其递增率仅相差0.11,因此证明所设计的节流器是合理可行的;最后,对基于薄膜反馈式节流的液体静压转台进行性能测试,结果表明转台的各项性能指标均能达到要求:承载力大于 1000 kg、刚度大于 2077 N/μm、轴向跳动小于1 μm,表明设计的节流器是合理可行的.
Abstract
Due to high feedback accuracy,film feedback restrictor is often used in hydrostatic rotary table.In response to the current domestic hydrostatic rotary table lack of high precision and surge in demand,in order to improve the accuracy of the hydrostatic rotary table,a new type of film feedback restrictor is de-signed in this article to obtain a stable high-rigid oil film,and uses Ansys to perform bidirectional fluid-structure interaction analysis to obtain the flow rate and pressure distribution of hydraulic oil.Then,com-pared with PM flow control device,the results show that with the increase of inlet pressure,the maximum a-mount of deformation of the film of the two films increases in an approximate linear relationship,and the increase rate is only 0.11,which proves that the designed flow restrictor is reasonable and feasible.Finally,the performance test of the hydrostatic rotary table based on film feedback restrictor shows that the perform-ance indicators of the turntable can meet the requirements:the carrier capacity is greater than 1000 kg,the stiffness is greater than 2077 N/μm,and the axial beating is less than 1 μm,which further shows that the designed restrictor is reasonable and feasible.
关键词
液体静压转台/薄膜反馈式节流器/双向流固耦合/变形量Key words
hydrostatic rotary table/film feedback restrictor/bidirectional fluid-structure interaction/a-mount of deformation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据