毕业论文-基于PLC控制的刮板式花生去壳机系统设计.doc

PAGE IV 基于PLC控制的刮板式花生去壳机系统设计 摘 要 本次毕业设计的题目是刮板式花生去壳机的设计。本设计采用PLC编程控制系统，根据花生湿度的变化，来调节电机的转速，从而实现对花生的脱壳，以达预期的目的。本论文主要介绍的是刮板式花生去壳机的整体设计过程，设计过程共分以下机个部分： 1、 机械结构部分。刮板式花生去壳机机械机构的设计与计算，主要分为两大部分，箱体内刮板部分和壳仁分离部分。分别介绍了传动机构的工作原理、选型计算、校核等。 2、 传动部分。主要包括传动方案的拟定和V带的选择，根据机械结构的设计选择相应的辅助元件。 3、 控制部分。其中包括控制器PLC的选用、硬件电路图的绘制、控制流程图的绘制、控制程序的编写等，在硬件电路图的设计中根据机械部分设计时所选的电机来确定其驱动芯片 通过分析刮板式花生去壳机的整体结构和控制系统的特点、应用条件，设计要求等，并结合刮板式花生去壳机在自动化生产线中的需要，实现了提高生产效率的目的。 关键词：PLC；花生去壳机；自动化 Abstract The graduation project is the subject of shelled peanuts scraper machine design. This design uses a PLC control system, according to the peanut and humidity changes, to adjust the motor speed in order to achieve the shelling of peanuts, to achieve the intended purpose. This paper focuses on the peanut shell scraper machine;s overall design process, machine design process is divided into the following parts: 1, mechanical parts. Peanut shelling machine scraper body design and mechanical calculations, is divided into two parts, cabinets and shell scraper part of the separation part of the kernel. Each section describes the transmission mechanism works, sizing, checking and so on. 2, the transmission part. Program includes the development and transmission V-belt selection, selection based on the design of mechanical structure corresponding auxiliary components. 3, the control part. Including the selection of the PLC controller, the hardware circuit of the drawing, the control flow diagrams, control program development, and so, in the design of hardware circuit design under the mechanical part of the selected motor to determine the driver chip By analyzing the peanut shell scraper machine;s overall structure and control system characteristics, application conditions, design requirements, fully embodies the scraper-type peanut shelling machine in the automated production line in a wide range of applications, to improve production efficiency. Keywords: PLC; peanut shelling machine; automated 目 录 TOC \o 1-3 \f \h \z 第