《关于肠衣长度测量仪器的设计说明书》-毕业论文.docVIP

PAGE w 河北农业大学 本科毕业设计说明书 题目：肠衣测量仪器的机构设计 学 院： 机电工程学院 专业班级：机械设计制造及其自动化 学 号：************ 学生姓名：************ 指导教师姓名： ************ 指导教师职称： 教授 讲师 讲师 肠衣测量仪器的机构设计 摘要：当前正在研究推广阶段的肠衣测量仪器使用PLC控制，这种肠衣机的工作原理很简单，也是利用轮（包括主动轮和测量轮）的旋转运动测量长度。主动轮由电机通过轴带动，测量轮则由主动轮通过肠衣带动其旋转，测量轮后接有编码器可以计数，单根肠衣的长度即是测量轮的周长与转数的乘积。基于这种原理的肠衣测量仪器大体上由四部分构成：操控装置，控制器，动力装置，测量装置。操控装置是肠衣测量仪器上供工人操作的那一部分，即人机对话平台，工人师傅通过该平台将信息输入机器，操控机器的运行。控制器主要由PLC组成，它是仪器的中枢大脑，控制着整个仪器的运行，其具体作用是对输入信号分析处理后，将输出信号传给执行元件，而且在达到程序规定的条件时自动停止运行并向工人发出提醒。动力装置包括必要的动力源即电机、传动轴、主动轮和必要的连接部件。它的作用即是带动肠衣移动，从而使测量轮旋转计数。测量装置则向控制器反馈数据信息，然后控制器根据反馈信息计算测量结果。PLC的应用使得这种仪器的自动化程度进一步提高，操作较以往也更加方便。本文介绍的测量仪器便是以PLC做控制器，光电传感器做计数开关，一次可测量多根肠衣长度的新型自动化肠衣测量仪器，其最高测量速度可以达到4.4m/s。 关键词：肠衣测量仪器 纯滚动 PLC 自动化 Design specification of Casing Measuring Instrument Abstract: Currently Casing Measuring Instrument on a stage of research and promotion is controlled by PLC. The way of working for this instrument is simple: making use of the rotation movement of the wheel (including the driving wheel and measuring wheel) for measuring the length. Driving wheel is driven by the motor through the shaft, measuring wheel is driven by the driving wheel to rotate through the casing. Measuring wheel connects with the encoder to count. Then the length of one casing is equal to the product of the perimeter and the number of revolutions of the measuring wheel. The Casing Measuring Instrument base on this principle consists of four parts: operation device, controller, power device, measuring device. Operation device is the part reference by workers to operate, it is the man-machine dialogue platform of the instrument. Workers input information through the platform into the machine to control the operation of the machine. Controller mainly consists of PlC, and it is the central brain of the instrument, controls the operation of the machine. And its specific role is to analyze the input signal proce