汽车钣金件压力连接质量监控系统的研究与开发

发布时间：2018-02-28 14:37

本文关键词： 汽车钣金件压力连接质量监控系统硬件与软件设计产品化设计　出处：《华南理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：汽车钣金件连接是汽车制造中的一项重要生产工艺，压力连接作为汽车钣金件连接的先进技术，具有很多传统工艺无法比拟的优势。压力连接技术属于冷挤压成型技术，过程简单但成型机理复杂。随着压力连接技术的应用更加广泛，如何有效、快速的控制连接点的质量成为一个亟待解决的问题。目前，，压力连接质量监控系统的市场几乎完全由国外品牌占据，国内对此的研究几乎处于空白状态。本文从实际需求出发，在嵌入式技术的基础上，研究开发出了一套具有自主知识产权的压力连接质量监控系统，可实现对压力连接过程的实时监控，对连接点质量进行有效评估。本文设计的压力连接质量监控系统分为数据采集模块和数据处理模块两部分。数据采集模块的主控制器采用STM32F103VET6，C语言编程，主要实现模拟信号采集、编码器信号采集、数模转换、报警信号输出等功能。数据采集模块可以对工业中常见的信号形式进行采集，尤其是位移信号，即可以采集伺服电机编码器的编码信号，也可以采集位移传感器的输出信号，这是本文的一大亮点。数模转换芯片采用16位的ADS8341。数据采集模块所具备的压力超限报警功能可以有效地保护模具。数据处理模块以TQ210开发板为硬件平台，采用Windows CE嵌入式操作系统，C#语言编程，主要实现数据处理、人机界面显示、数据存储等功能。数据处理模块可以实时显示压力-位移曲线，采用窗口法作为质量评估方法。另外，本文还为数据处理模块与数据采集模块之间设计了可靠的通讯协议。试验表明，本文设计的压力连接质量监控系统可以实现预期的目标，对压力连接过程进行实时监控，并有效评估连接点质量。最后，本文对压力连接质量监控系统进行了产品化设计，产品化设计对系统投入工业使用提供了参考。
[Abstract]:The connection of automobile sheet metal parts is an important production technology in automobile manufacturing. As an advanced technology of automobile sheet metal parts connection, pressure connection technology has many advantages that cannot be compared with traditional technology. Pressure connection technology belongs to cold extrusion forming technology. The process is simple but the forming mechanism is complicated. With the application of the pressure connection technology more widely, how to control the quality of the connection point effectively and quickly becomes an urgent problem to be solved. The market of pressure connection quality monitoring system is almost completely occupied by foreign brands, and the domestic research on it is almost blank. This paper starts from the actual demand, based on the embedded technology, A pressure connection quality monitoring system with independent intellectual property rights is developed, which can realize the real-time monitoring of the pressure connection process and evaluate the quality of the connection point effectively. The pressure connection quality monitoring system designed in this paper is divided into two parts: data acquisition module and data processing module. The main controller of data acquisition module is programmed by STM32F103VET6C language, which mainly realizes analog signal acquisition and encoder signal acquisition. Digital to analog conversion, alarm signal output and other functions. The data acquisition module can collect the common signal forms in industry, especially the displacement signal, that is, the encoding signal of servo motor encoder can be collected. The output signal of the displacement sensor can also be collected, This is one of the highlights of this paper. Digital to analog conversion chip uses 16-bit ADS8341.The data acquisition module has the function of pressure exceeding alarm can effectively protect the mold. The data processing module takes the TQ210 development board as the hardware platform. The Windows CE embedded operating system is used to program in C # language, which mainly realizes the functions of data processing, man-machine interface display, data storage and so on. The data processing module can display the pressure-displacement curve in real time. In addition, a reliable communication protocol between the data processing module and the data acquisition module is designed. The test results show that the pressure connection quality monitoring system designed in this paper can achieve the desired goal, monitor the pressure connection process in real time, and evaluate the connection quality effectively. Finally, In this paper, the production design of the pressure connection quality monitoring system is carried out, which provides a reference for the system to be put into industrial use.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U466

【参考文献】