论文部分内容阅读
对数学模型未知的凸轮轮廓测量,通常采用均匀分度测量法,测量时间较长、精度差、数据量大,为后期数据分析带来不便。凸轮曲线为规律曲线,有着严格的数学模型,没有必要对轮廓上全部点位进行测量。基于以上原因,为了提高凸轮轮廓曲线的检测速度和精度,较好的反应凸轮轮廓信息,提出了基于三坐标测量机(Coordinate Measuring Machine,CMM)的凸轮轮廓自适应测量方法。测点分布及数量由凸轮轮廓本身物理特性决定,测点数量明显降低,测量结果可反映轮廓光顺度,测量过程成闭环形式,自动计算探测矢量。实际测量结果表明,自适应测量法操作简便,效率高,精度可控,具有较高的应用推广价值。
For the cam profile measurement with unknown mathematical model, the uniform indexing method is usually adopted. The measurement time is long, the precision is poor, and the data amount is large, which brings inconvenience to the later data analysis. The cam curve is a regular curve with a rigorous mathematical model and it is not necessary to measure all the points on the profile. For the above reasons, in order to improve the detection speed and accuracy of the cam profile curve and to better reflect the cam profile information, a cam contour adaptive measurement method based on Coordinate Measuring Machine (CMM) is proposed. The distribution and quantity of measuring points are determined by the physical characteristics of the cam profile itself. The number of measuring points is significantly reduced. The measurement results reflect the smoothness of the profile. The measuring process is in the form of a closed loop and the detection vector is automatically calculated. The actual measurement results show that the adaptive measurement method is easy to operate, high efficiency and controllable precision, and has a high value for application and popularization.