BTA深孔连接器设计及油膜压力研究  

BTA Deep Hole Connector Design and Oil Film Pressure Study

作　　者：陈振亚[1,2] 马卓强 李翔 苗鸿宾[1,3] 杨尚进[1,3] 李建 CHEN Zhenya;MA Zhuoqiang;LI Xiang;MIAO Hongbin;YANG Shangjin;LI Jian(School of Mechanical Engineering,North University of China,Taiyuan Shanxi 030051,China;713 Research Institute of China Shipbuilding Industry Corporation,Zhengzhou Henan 450015,China;Shanxi Provincial Key Laboratory of Intelligent Equipment Technology in Harsh Environment,North University of China,Taiyuan Shanxi 030051,China;Nanjing R&D Center,Inner Mongolia North Heavy Industry Group Co.,Ltd.,Nanjing Jiangsu 211100,China)

机构地区：[1]中北大学机械工程学院,山西太原030051 [2]中国船舶重工集团公司第七一三研究所,河南郑州450015 [3]中北大学,恶劣环境下智能装备技术山西省重点实验室,山西太原030051 [4]内蒙古北方重工业集团有限公司南京研发中心,江苏南京211100

出　　处：《机床与液压》2024年第19期59-64,共6页Machine Tool & Hydraulics

基　　金：国家自然科学基金青年科学基金项目(52005456);山西省基础研究计划面上项目(202303021221109);山西省专利转化专项计划项目(202305006);中央引导地方科技发展专项(YDZJSX2022A032);XXXX特性研究项目(XX01)。

摘　　要：针对BTA加工过程中刀具系统刚性不足和径向受力不平衡的问题,基于流体动压润滑原理设计一种BTA深孔连接器。连接器包括双桥应变片和可倾瓦块,利用油膜支撑刚度增大刀具系统的刚性,并通过实时调整油膜压力抵消同步检测的不平衡径向力。建立可倾瓦块的数学模型,推导出油膜厚度公式,进一步得出油膜压力的计算公式。基于Fluent软件对连接器进行流体仿真,采用单因素实验法,分析不同条件下可倾瓦块受到的油膜压力的变化规律。结果表明:BTA加工过程中,通过调节工件转速、切削液黏度、瓦块倾角和瓦块包角等参数调整油膜压力,进而实现增大刀具系统刚性和抵消不平衡径向力的目的。Aiming at the problem of insufficient rigidity of the tool system and unbalanced radial force during BTA machining process,a BTA deep hole connector was designed based on the fluid dynamic pressure lubrication principle.The connector included double-bridge strain gauges and tiltable tiles,which could increase the rigidity of the tool system by using the oil film support stiffness and offset the unbalanced radial force of synchronous detection by adjusting the oil film pressure in real time.The mathematical model of the tiltable tile was established,the oil film thickness equation was derived,and the oil film pressure calculation equation was further derived.The fluid simulation of the connector was carried out based on Fluent software,and the single factor experiment method was used to analyze the change law of the oil film pressure of tilting tile under different conditions.The results show that the oil film pressure can be adjusted by adjusting the parameters of workpiece speed,cutting fluid viscosity,tile tilt angle and tile wrap angle during BTA machining,so as to achieve the purpose of increasing the rigidity of the tool system and offsetting the unbalanced radial force.

关 键 词：BTA深孔连接器 油膜压力 系统刚性 径向力 流体仿真 

分 类 号：TH122[机械工程—机械设计及理论] TG523[金属学及工艺—金属切削加工及机床]