本文選題：產品族 + 超聲檢測附件　； 參考：《中北大學》2017年碩士論文

【摘要】：“超聲檢測”是無損檢測技術領域里主要的探測手段。隨著科學技術的快速發(fā)展,“超聲自動檢測技術”成為超聲檢測技術發(fā)展的必然趨勢。超聲自動檢測技術已經在航空、航天、核電及高鐵等領域關鍵零部件的檢測中得到了較多的應用,但是在普通零部件的檢測中應用較少,其中檢測設備研發(fā)成本高、開發(fā)周期長、通用性差等一些問題是限制超聲自動檢測技術推廣與應用的主要因素。針對這種情況,提出“車床超聲檢測附件”的概念,旨在通過產品族技術開發(fā)一種適用于車床的超聲檢測附件,該附件安裝在車床上組成車床超聲自動檢測系統(tǒng),以此代替超聲檢測裝置,從而降低超聲自動檢測設備的開發(fā)成本,縮短開發(fā)周期,使其變得更具通用性。本文闡述了車床超聲檢測附件的概念和特點,對整個附件組成結構進行了分析,基于產品族的理念將附件進行了模塊化劃分,設計了車床超聲檢測附件產品平臺,并分別針對超聲耦合模塊、控制系統(tǒng)模塊以及上位機模塊進行了詳細的分析論證和實驗驗證。首先,通過對車床超聲檢測附件中的耦合技術進行研究,提出了薄膜耦合法和水柱溢水法的概念,對耦合結構進行模塊化、參數(shù)化設計,通過仿真求得耦合結構的最佳參數(shù)并完成相應零部件的加工制造,針對不同曲率的工件,在車床上進行檢測實驗,結果表明薄膜耦合法適用于小曲率的工件,水柱溢水法適用于大曲率的工件。其次,通過對工業(yè)中常見控制系統(tǒng)進行對比,選定單片機作為控制器,并對單片機的控制任務進行了分析,完成了車床超聲檢測附件產品族控制系統(tǒng)的硬件和軟件的模塊化設計,在車床上進行了實驗,結果表明單片機控制器和車床數(shù)控系統(tǒng)的協(xié)同控制能夠取得比較好的效果。最后,根據是否將附件運動同車床運動一同編程,將NC代碼的識別提取劃分為時間同步法和直接提取法兩種方式,通過對NC代碼的組成格式和車削加工零件常見輪廓進行分析,完成了車床超聲檢測附件數(shù)控代碼提取器的算法設計和NC代碼的模塊提取,并通過實例驗證了方案的可行性。
[Abstract]:Ultrasonic testing is the main detection method in the field of nondestructive testing technology. With the rapid development of science and technology, automatic ultrasonic detection technology has become an inevitable trend. The ultrasonic automatic testing technology has been widely used in the detection of key parts in the fields of aviation, aerospace, nuclear power and high iron, but it is less used in the detection of ordinary parts, among which the cost of research and development of testing equipment is high. Some problems, such as long development period and poor generality, are the main factors restricting the popularization and application of ultrasonic automatic detection technology. In view of this situation, the concept of "lathe ultrasonic testing accessory" is put forward in order to develop a kind of ultrasonic testing accessory suitable for lathe through product family technology, which is installed on the lathe to form a lathe ultrasonic automatic testing system. In order to reduce the development cost, shorten the development cycle and make it more universal. This paper describes the concept and characteristics of lathe ultrasonic testing accessories, analyzes the structure of the whole accessories, divides the accessories into modules based on the concept of product family, and designs the product platform of lathe ultrasonic testing accessories. The ultrasonic coupling module, the control system module and the upper computer module are analyzed and verified in detail. First of all, by studying the coupling technology in the ultrasonic testing accessory of lathe, the concepts of membrane coupling method and water column overflow method are put forward, and the coupling structure is modularized and parameterized. The optimum parameters of the coupling structure are obtained by simulation and the machining and manufacturing of the corresponding parts are completed. The testing experiments are carried out on the lathe for the workpieces with different curvature. The results show that the film coupling method is suitable for the workpieces with small curvature. The water column overflow method is suitable for large curvature workpieces. Secondly, by comparing the common control systems in industry, the single-chip computer is selected as the controller, and the control task of the single-chip microcomputer is analyzed. The modularization design of hardware and software of the lathe ultrasonic testing accessory product family control system is completed, and the experiment is carried out on the lathe. The results show that the cooperative control between the single-chip microcomputer controller and the lathe numerical control system can achieve better results. Finally, according to whether the accessory motion and lathe motion are programmed together, the identification and extraction of NC code are divided into two ways: time synchronization method and direct extraction method. The composition format of NC code and the common contour of turning parts are analyzed. The algorithm design of numerical control code extractor for ultrasonic testing accessory of lathe and the module extraction of NC code are completed, and the feasibility of the scheme is verified by an example.
【學位授予單位】：中北大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TG51

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本文編號：1885702