实时无隙钢球精密传动等速啮合副闪温研究  

RESEARCH ON FLASH TEMPERATURE OF CONSTANTLY NO CLEARANCE PRECISION STEEL BALL EQUAL-SPEED TRANSMISSION

作　　者：夏婧琪 安子军[1] 姜威[1] XIA JingQi;AN ZiJun;JIANG Wei(School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]燕山大学机械工程学院,秦皇岛066004

出　　处：《机械强度》2018年第6期1406-1411,共6页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51275440);河北省自然科学基金项目(E2013203085)资助~~

摘　　要：根据机构的结构特点和闪温理论,研究实时无隙精密钢球传动等速啮合副瞬时接触温升规律,推导出啮合副中各接触点的相对滑动速度、最大接触应力和摩擦功率的计算公式,建立了等速啮合副瞬时接触温升的数学分析模型。通过Matlab编程绘制出一个运动周期内啮合副最大接触应力的变化曲线,计算出不同设计参数下机构的额定载荷,得到一个运动周期内啮合副中最大闪温的变化曲线,并分析了设计参数对最大闪温的影响。结果表明:啮合副闪温的最大值出现在环槽内侧钢球位置角为π时,设计参数对机构最大闪温有较明显的影响。研究结果为无隙钢球精密传动等速啮合副胶合强度分析与热力耦合分析奠定了理论基础。On the basis of mechanism structure and the flash temperature theory,the instantaneous contact temperature-rise principle of constantly no clearance precision steel ball equal-speed transmission is studied and the formulas of the spin speed on each contact point,maximum contact stress,and frictional power arc derived.Meantime,the mathematical model of instantaneous contact temperature risen of engagement pairs is established.By the use of MATLAB programming,the change curves of maximum contact stress of engagement pairs in one motion cycle are drawn,the rated loads with different design parameters are calculated,and the instantaneous contact temperature-rise of engagement pairs in one motion cycle are drawn. Besides,the effects on instantaneous contact temperature-rise caused by design parameters llke groove angle and eccentricity are analyzed.It is shown that the maximum value of the instantaneous contact temperature-rise appears when the steel ball position angle is ~and the inner side bears the pressure.The research findings lay a theoretical foundation for the scuffing load capacity calculation of the contact engagement pairs and thermo-mechanical analysis of constantly no clearance precision steel ball transmission.

关 键 词：无隙钢球精密传动 等速啮合副 最大闪温 额定载荷 自旋角速度 

分 类 号：TH132.4[机械工程—机械制造及自动化]