基于相对速度瞬心不同型号测头升程与转角折算算法的研究  

Research on Different Type of Probe Conversion and Equivalent Angle/rise Based on Relative Instantaneous Center of Velocity

作　　者：隋振[1] 李琳[1] 王勋龙[2] 田彦涛[1] 王静[1] 房磊[1] 

机构地区：[1]吉林大学通信工程学院,长春130022 [2]吉林大学汽车工程学院,长春130022

出　　处：《机械工程学报》2014年第6期206-212,共7页Journal of Mechanical Engineering

基　　金：吉林大学基本科研业务费-科学前沿与交叉学科创新资助项目(201003056)

摘　　要：测头的选择受到凸轮设计要求的严格限制,严重制约检测仪器检测效率的提高。为解决不符合设计要求的滚柱测头难以检测相应凸轮片的问题,扩大凸轮轴检测仪的检测范围,提出基于相对速度瞬心的不同型号滚柱测头升程与转角之间转换关系的折算算法。介绍凸轮轴检测设备的测绘原理,分析不同型号滚柱测头升程及转角之间能够相互折算的条件及场合。通过检测实例,分别采用正向验证及由理论测头检测数据反求凸轮测量数据两种方法对不同型号滚柱测头的折算算法进行验证。对折算修正后离散的凸轮轮廓数据进行三次参数样条插值拟合,去'毛刺'等处理。对比分析非理论测头的折算数据与理论滚柱测头所测凸轮轮廓数据:经该算法修正优化后的非理论测头升程的最大误差是1.4μm,满足凸轮机构高精度运动分析的要求。The choice of the probe is strictly limited by the cam design requirements so that the detection efficiency of camshaft detector is severely restricted.Therefore,in order to solve the Problem the roller probe does not meet the design requirements that the CAM piece cannot be detected and expand the serviceable range of camshaft detector,the algorithm about different type of probe conversion and equivalent angle/rise based on relative instantaneous center of velocity which can correct and optimize the measurement data by non-theoretical roller probe is studied.The detection principle of camshaft detector and the conversion conditions also is introduced.Through the experiment,forward simulation and reverse calculation algorithm of the measurement data converted from the theoretical cam profile data collected by the theoretical roller probe are adopted to verify the algorithm of different type of roller probe conversion and equivalent.Numerical analysis comparison between the theoretical data and the reversed measured data by parametric cubic spline curve fitting method and eliminating burr is conducted.The analysis results indicate that the maximum error of the data optimized can reach 1.4 μm meeting the analysis requirements of high-precision movement of the cam mechanism.

关 键 词：修正与优化 速度瞬心 凸轮轮廓 滚柱测头 数据反求 

分 类 号：TH112[机械工程—机械设计及理论]