摘要目前造船行业通用的制造工艺是对船体进行分段制造、焊接和装配。这些工艺都需要工艺装备来保证精度和效率。胎架的使用保证了船体每个分段外板线型的一致性,为后期焊接和装配提供了有力的保障。本文主要针对支柱式胎架的功能和作用,完成对数控胎架控制系统的设计,来实现胎架支撑的自动化,减少人力成本,保证造船精度,提高效率。83138
本文首先分析了目前造船行业对数控胎架的功能需求,参考了国内外相关研究和报道,对现有的各类数控胎架的结构及工作方式做了总结,提出了符合现代化造船装备要求的胎架。在上述研究的基础上,研发设计了一套基于PLC的胎架控制系统,对胎架目前自动化程度低的问题给出了一种解决方案。
本文对控制系统进行了设计。设计分为硬件平台搭建和控制程序编写。硬件平台包括步进电动机,PLC控制器,模数转换模块的选型确定。软件设计主要包括程序梯形图的编写。最后着重介绍了控制程序中几个比较典型的控制程序原理。
毕业论文关键词:数控胎架;自动化;PLC可编程逻辑控制器;
Abstract At present,the general manufacturing technology of shipbuilding to segment the ship hull is made,welding and assembly。These processes require process equipment to ensure the accuracy and efficiency。The mould bed ensures the consistency of each section of the hull,because it can provide a powerful guarantee for the later welding and assembly。This article mainly aims at the function of the mould bed,then completes the control system of the numerical control to realize the automation of the support,reduce the manpower cost,ensure the shipbuilding precision,improve the efficiency。
This paper first analyzes the currently shipbuilding industry demands on CNC mould bed,summarizes the various types of CNC mould bed of the existing structure and working mode with the domestic and related research reports,then proposed the requirements conforms to the Modern Shipbuilding Equipment。On the basis of the research above,the control system based on PLC is designed and developed, which provides a solution to the low level of automation。
The control system is designed in this paper。 Design is pided into hardware platform and control programs。 The hardware platform consists the selection of the stepping motor, PLC controller, and the analog to digital conversion module。The software design mainly includes the program ladder diagram。At last, the paper introduces the principle of several typical control programs in the control program。
Keywords: the Strutted NC Mould Bed;automation;the PLC programmable logic controller;
目 录
第一章 绪论 1
1。1 引言 1
1。2 国内外的研究现状 1
1。3课题的目的 2
1。4 本课题的主要研究内容 2
第二章 数控胎架控制系统总体方案设计 3
2。1 背景 3
2。2 支柱式胎架内部结构原理 3
2。3 控制系统概述 4
2。3。1 控制系统的分类 4
2。3。2 控制系统的选择 4
2。4 数控胎架控制系统的技术要求 5
2。5 控制系统的总体控制流程及方案 5
2。6 胎架控制系统的控制流程