考虑材料形变的旋风铣削螺纹工件表面粗糙度建模  

Surface roughness modeling of thread workpieces in whirlwind milling considering material deformation

作　　者：刘超[1,2,3] 黄尊鹏 黄绍服 LIU Chao;HUANG Zunpeng;HUANG Shaofu(School of Mechanical and Electrical Engineering,Anhui University of Science and Technology,Huainan 232001,China;Institute of Environment-friendly Materials and Occupational Health,Anhui University of Science and Technology,Wuhu 241003,China;State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400030,China)

机构地区：[1]安徽理工大学机电工程学院,安徽淮南232001 [2]安徽理工大学环境友好材料与职业健康研究所,安徽芜湖241003 [3]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《浙江大学学报（工学版）》2024年第4期761-771,共11页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(52205321,52275228);安徽省科技重大专项资助项目(202203f07020008);安徽理工大学环境友好材料与职业健康研究院(芜湖)资助项目(ALW2021YF06)。

摘　　要：表面粗糙度对工件的耐磨性、疲劳强度和接触刚度有重要影响,在金属切削过程中,表面粗糙度受到工件材料形变的影响.根据赫兹弹性接触理论,建立工件材料形变的弹性回复高度模型.基于摩擦磨损计算原理,提出工件材料形变的塑性变形高度模型.分析刀具-工件接触运动,建立工件表面的残留高度模型.结合工件材料形变和残留高度的影响,建立滚珠丝杠旋风铣削表面粗糙度理论模型.通过旋风铣削试验验证表面粗糙度模型,结果表明理论模型值与试验值吻合良好.分析切削参数(切削速度、最大切削深度和刀具个数)对表面粗糙度的影响,揭示工件材料形变与表面粗糙度的关系.Surface roughness has an important influence on wear resistance,fatigue strength and contact stiffness of the workpiece.In the process of metal cutting,the surface roughness is greatly affected by the deformation of the workpiece material.An elastic recovery height model for workpiece material deformation was established based on the Hertz elastic contact theory,and a plastic deformation height model for workpiece material deformation was proposed based on the calculation principle of friction and wear.A residual height model of the workpiece surface was established by analyzing the contact motion between the tool and the workpiece.A theoretical model for surface roughness of ball screw whirlwind milling was established based on the influence of workpiece material deformation and residual height.The surface roughness model was validated through whirlwind milling experiments,and results showed that the theoretical model values were in good agreement with the experimental values.The influence of cutting parameters(cutting speed,maximum cutting depth,and number of tools)on surface roughness was analyzed.The relationship between deformation of workpiece materials and surface roughness was revealed.

关 键 词：表面粗糙度 材料形变 旋风铣削 滚珠丝杠 塑性变形 弹性回复 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]