【摘要】：隨著現(xiàn)代制造業(yè)智能化、數(shù)字化、網(wǎng)絡(luò)化趨勢(shì)的推進(jìn),發(fā)展集成三維設(shè)計(jì)軟件、數(shù)控機(jī)床和原位檢測(cè),實(shí)現(xiàn)產(chǎn)品設(shè)計(jì)—加工—檢測(cè)的閉環(huán)生產(chǎn)結(jié)構(gòu)已成為振興制造業(yè)的重要手段。為提高數(shù)控機(jī)床的原位檢測(cè)精度、實(shí)現(xiàn)可視化效果以及原位檢測(cè)與CAD/CAM軟件的無(wú)縫連接,本文運(yùn)用UG二次開發(fā)技術(shù)對(duì)數(shù)控機(jī)床原位檢測(cè)系統(tǒng)進(jìn)行了研究。首先,本文針對(duì)計(jì)算機(jī)與數(shù)控機(jī)床之間如何交換數(shù)據(jù)信息的問題,進(jìn)行了基于UG的數(shù)控機(jī)床原位檢測(cè)系統(tǒng)串口通訊模塊的研究。概述了Visual C++與串口通訊的優(yōu)點(diǎn)、工作方式及通訊協(xié)議;介紹了串口通訊系統(tǒng)硬件,RS-232協(xié)議標(biāo)準(zhǔn),RS-232串口通訊的基本接線方法,針對(duì)目前多數(shù)計(jì)算機(jī)不能直接連接RS232接口的問題,提出了引入U(xiǎn)SB串口轉(zhuǎn)換的方法,以及判斷接口是否正常的操作方法,從而完成了通訊系統(tǒng)的整體結(jié)構(gòu)界面的設(shè)計(jì)、動(dòng)態(tài)鏈接庫(kù)的搭建,并基于UG平臺(tái),C++語(yǔ)言開發(fā)了基于UG的數(shù)控機(jī)床原位檢測(cè)串口通訊系統(tǒng)模塊。其次,為了實(shí)現(xiàn)數(shù)控機(jī)床原位檢測(cè)的可視化效果和工作效率的提高,本文進(jìn)行了基于UG的數(shù)控機(jī)床原位檢測(cè)仿真系統(tǒng)的研究。分析了通常所用的兩種檢測(cè)測(cè)頭的參數(shù)化設(shè)計(jì)方法的優(yōu)劣,提出了綜合兩種方法的優(yōu)勢(shì)在MFC界面下結(jié)合UG實(shí)現(xiàn)檢測(cè)測(cè)頭的設(shè)計(jì);然后運(yùn)用Ufun運(yùn)動(dòng)函數(shù)以及曲面信息獲取函數(shù),按照數(shù)控機(jī)床原位檢測(cè)的原理實(shí)現(xiàn)曲面檢測(cè)運(yùn)動(dòng)的仿真;并基于UG/Open API、MFC開發(fā)了基于UG的數(shù)控機(jī)床原位檢測(cè)系統(tǒng)仿真模塊。最后,為了提高檢測(cè)精度和簡(jiǎn)化研究方法,本文進(jìn)行了基于UG的數(shù)控機(jī)床原位檢測(cè)系統(tǒng)誤差補(bǔ)償?shù)难芯俊７治隽藴y(cè)頭檢測(cè)誤差產(chǎn)生原理,針對(duì)通常檢測(cè)誤差補(bǔ)償算法繁瑣,精度不高的問題,提出了對(duì)待檢測(cè)點(diǎn)的預(yù)行程進(jìn)行逐一標(biāo)定的方法;為了減少人為誤差的引入,提出了運(yùn)用數(shù)控系統(tǒng)宏程序?qū)崿F(xiàn)工件檢測(cè)坐標(biāo)系的自動(dòng)建立的方法,提高檢測(cè)精度。此外,為了驗(yàn)證本系統(tǒng)開發(fā)方法的執(zhí)行效果,本文進(jìn)行了曲面零件的設(shè)計(jì)—加工—檢測(cè)的實(shí)驗(yàn)驗(yàn)證,實(shí)驗(yàn)表明本文所研究的系統(tǒng)是可行的。
[Abstract]:With the development of modern manufacturing intellectualization, digitalization and networking, the development of integrated three-dimensional design software, numerical control machine tools and in-situ detection, The closed-loop production structure of product design, machining and inspection has become an important means to revitalize the manufacturing industry. In order to improve the precision of in-situ detection of NC machine tool and realize the visualization effect and the seamless connection between in-situ detection and CAD/CAM software, this paper studies the in-situ detection system of NC machine tool by using UG secondary development technology. Firstly, aiming at the problem of how to exchange data information between computer and NC machine tool, the serial communication module of in-situ detection system of NC machine tool based on UG is studied in this paper. The advantages, working mode and communication protocol of communication between Visual C and serial port are summarized. This paper introduces the hardware of serial communication system, the standard of RS-232 protocol and the basic connection method of RS-232 serial communication. Aiming at the problem that most computers can not connect directly to RS232 interface at present, this paper puts forward the method of introducing USB serial port conversion. And judging whether the interface is normal or not, thus completing the design of the whole structure interface of the communication system, the construction of the dynamic link library, and based on the UG platform. C language developed a UG-based NC machine tool in-situ detection serial communication system module. Secondly, in order to improve the visualization effect and work efficiency of NC machine tool in-situ detection, the research of NC machine tool in-situ detection simulation system based on UG is carried out in this paper. This paper analyzes the advantages and disadvantages of the parameterized design method of the two kinds of detection probe commonly used, and puts forward the design of the detection probe based on the MFC interface combined with UG, which combines the advantages of the two methods and puts forward the design of the test probe based on the two methods. Then the Ufun motion function and surface information acquisition function are used to realize the simulation of surface detection motion according to the principle of in-situ detection of NC machine tool, and the simulation module of NC machine tool in-situ detection system based on UG is developed based on UG/Open API,MFC. Finally, in order to improve the detection accuracy and simplify the research method, this paper studies the error compensation of NC machine tool in-situ detection system based on UG. The generating principle of probe detection error is analyzed. Aiming at the problem of tedious detection error compensation algorithm and low precision, a method is put forward to calibrate the pre-stroke of detection point one by one. In order to reduce the man-made error, a method of automatically establishing the coordinate system of workpiece detection by using the macro program of numerical control system is put forward to improve the detection precision. In addition, in order to verify the implementation effect of the system development method, the design-machining-inspection experiment of curved surface parts is carried out in this paper. The experimental results show that the system studied in this paper is feasible.
【學(xué)位授予單位】：廣西科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG659

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本文編號(hào)：2465899