游标卡尺示值检定装置设计  

Design of a device for the indication verification of vernier calipers

作　　者：鲍承德 徐志玲[2] 王鹏峰[2] 陈旺达[2] 于雷[2] 

机构地区：[1]中国计量大学计量测试工程学院,浙江杭州310018 [2]中国计量大学现代科技学院,浙江杭州310018

出　　处：《中国计量学院学报》2016年第2期138-143,共6页Journal of China Jiliang University

摘　　要：游标卡尺示值一直采用人工目视检定方法,效率低下.设计了一种游标卡尺示值检定装置,其中精密基座系统设计采用弹性力学理论,建立动态力学特性模型.基于模型分析计算刚度等参数,确定精密基座系统的设计结构.为了有效减少系统阿贝误差,检定装置系统控制其允许出现的最大倾斜角.根据步进电机速度曲线原理,设计电机驱动器有效的细分数.在符合JJG30-2012《通用卡尺检定规程》要求下,采用高精密度光栅尺替代标准量块,步进电机代替人工操作,图像识别技术代替人眼,提高了游标卡尺的检定效率,实现了计管控一体.Vernier caliper calibration with eyesight is inefficient. We designed a vernier caliper indication verification device. The precision pedestal system was developed to establish a dynamic mechanical properties model by using the elasticity theory. The parameters such as rigidity were analyzed and calculated and the structure of the precision pedestal system was determined. In order to reduce the Abbe error of the system effectively, the maximum allowable tilt angle was controlled by the verification device system. According to the principle of the stepper motor speed curve, the effective subdivision number of the motor driver was obtained. In conformity with the requirements of JJG30-2012 《Universal Caliper Test Procedures》, high- precision grating was adopted to instead of the standard gauge block. Artificial operation was replaced by the stepper motor and image recognition technology was substituted for human eyes. The primary test results showed that the verification efficieney of the vernier caliper was improved and the integration of measurement, management and control was realized.

关 键 词：游标卡尺 示值检定 阿贝误差 图像识别 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]