1、 共 30 页 第 1 页 摘摘 要要 一个国家综合国力的衡量标准就是工业的发达程度。而轴承的性能、寿命及可靠性 又代表着一定的工业发展程度，轴承的质量不仅取决于设计、制造还取决于检测环节。 检测环节中常出现的问题就是检测误差，误差是影响滚珠质量的关键因素。在实际生产 中造成检测误差值的因素有两点，一是测量量大，二是人工测量存在读数误差。为了提 高生产中滚珠的测量精准度，本文中设计了一种由 PLC 控制的滚珠直径分拣系统，通过 机械传送、传感测量的方式完成滚珠的自动检测与分拣，该系统不仅提高测量精度还提 高了分拣的效率。 本设计的要求是，推杆将滚珠推到限位挡板处，到达挡板后，钨钢测头测量直径误
2、 差， 将所得数字信号转换为电模拟信号并经放大电路放大后送到PLC 的模拟量处理模块， 据此打开相应的电磁翻板，再由推杆将滚珠送到不同的分料箱。 此系统既可节约成本、 提高测量精度， 又能提高分拣效率， 有广阔的市场发展前景。 关键词关键词：PLC 精密测量 滚珠分拣 共 30 页 第 2 页 Abstract The measure of a countrys comprehensive national strength is a developed industry.And bearing performance, life and reliability of represents a
3、 certain degree of industrial development, the quality of the bearing depends not only on the design, manufacture also depends on the test link.Inspection processes often appears the problem is error, error is a key factor affecting the quality of ball.Value error caused in the actual production the
4、re are two factors, one is measured quantity is big, the second is artificial measurement reading error exists.In order to improve the measurement accuracy of the production of ball bearing, this article designs a kind of ball diameter sorting system controlled by PLC, completed by means of mechanic
5、al transmission, sensor measuring roller automatic detection and sorting, the system not only improve measurement accuracy but also improve the sorting efficiency. The requirements of this design is that the push rod to push the ball to the limit baffle, arriving at baffle, the tungsten probe diamet
6、er measurement error, proceeds to analog signal and digital signal is converted to electricity by amplifying circuit to enlarge PLC analog processing module, magnetic flap open accordingly, by putting the ball again to different container. This system can not only save costs, improve the measurement precision, and can improve the efficiency of sorting, have broad market prospects. Keywords: PLC precision measuring ball sorting 共 30 页 第 3 页 目目 录录 摘 要 . 1 Abstract . 2 目 录 . 3 第一章 绪论 . 4 1.
