發(fā)布時(shí)間：2019-01-05 08:29

【摘要】：硅鋼片數(shù)控橫剪線是生產(chǎn)電力變壓器鐵芯的堆疊材料——硅鋼片的專(zhuān)用設(shè)備。硅鋼片按鐵芯結(jié)構(gòu)分為中柱片、鐵(軛)片、邊片,其片形組合豐富,種類(lèi)多。目前我國(guó)硅鋼片數(shù)控橫剪線存在著工藝過(guò)于簡(jiǎn)單、加工效率低、數(shù)控化程度低、制造柔性差等缺點(diǎn)。本文從理論上分析硅鋼片數(shù)控橫剪線及其工藝,通過(guò)數(shù)學(xué)建模得出多剪多沖數(shù)控橫剪線的加工策略,開(kāi)發(fā)了兩剪三沖數(shù)控橫剪線自動(dòng)加工系統(tǒng),并通過(guò)仿真和現(xiàn)場(chǎng)應(yīng)用驗(yàn)證了加工策略的可行性。首先,基于Petri網(wǎng)理論建立了多剪多沖數(shù)控橫剪線的時(shí)間Petri網(wǎng)(TPN)模型。通過(guò)引入特征的概念,將硅鋼片定義成基本特征的集合,提出多剪多沖數(shù)控橫剪線的定義三方面為建立TPN模型奠定基礎(chǔ)。其次,研究加工策略,建立以加工工步為優(yōu)化目標(biāo)的多剪多沖數(shù)控橫剪線的數(shù)學(xué)模型,并對(duì)工步參數(shù)進(jìn)行優(yōu)化。以數(shù)學(xué)模型為基礎(chǔ),從算法總體流程、工步計(jì)算及優(yōu)化、工步參數(shù)優(yōu)化三方面設(shè)計(jì)多剪多沖數(shù)控橫剪線的求解算法。再次,實(shí)現(xiàn)兩剪三沖數(shù)控橫剪線自動(dòng)加工系統(tǒng)。在前面章節(jié)理論研究成果的基礎(chǔ)上,以統(tǒng)一建模語(yǔ)言(UML)建模理論為基礎(chǔ)建立系統(tǒng)的設(shè)計(jì)用例模型和實(shí)體類(lèi)模型;利用微軟基礎(chǔ)類(lèi)庫(kù)(MFC),開(kāi)發(fā)了片形數(shù)據(jù)轉(zhuǎn)化模塊、工藝分析模塊和人機(jī)交互界面(HMI),實(shí)現(xiàn)了兩剪三沖數(shù)控橫剪線加工數(shù)據(jù)的自動(dòng)生成。最后,對(duì)兩剪三沖數(shù)控橫剪線自動(dòng)加工系統(tǒng)進(jìn)行仿真與應(yīng)用。采用SolidWorks系統(tǒng)的參數(shù)化功能,對(duì)系統(tǒng)生成的數(shù)據(jù)進(jìn)行了仿真,驗(yàn)證了數(shù)據(jù)的準(zhǔn)確性和加工策略的可行性。開(kāi)發(fā)的兩剪三沖數(shù)控橫剪線自動(dòng)加工系統(tǒng)安裝在某公司研制的硅鋼片數(shù)控橫剪線上進(jìn)行了現(xiàn)場(chǎng)應(yīng)用,已加工出合格產(chǎn)品。
[Abstract]:The silicon steel sheet numerical control transverse shear line is a special equipment for producing power transformer core stacking material-silicon steel sheet. According to the core structure, silicon steel sheet is divided into middle column sheet, iron (yoke) sheet, edge piece, its sheet shape combination is rich, and there are many kinds. At present, there are some disadvantages such as too simple technology, low machining efficiency, low numerical control degree and poor manufacturing flexibility in the NC transverse shear line of silicon steel sheet in China. In this paper, the numerical control transverse shear line and its technology of silicon steel sheet are analyzed theoretically, and the machining strategy of multi-shear and multi-punch NC transverse shear line is obtained by mathematical modeling, and the automatic machining system of two-shearing and three-punch NC transverse shear line is developed. The feasibility of machining strategy is verified by simulation and field application. Firstly, based on Petri net theory, the time Petri net (TPN) model of multi-shearing and multi-punch NC transverse shear line is established. By introducing the concept of feature, the silicon steel sheet is defined as a set of basic features, and the definition of multi-shear and multi-punch numerical control transverse shear line is proposed to lay the foundation for the establishment of TPN model. Secondly, the processing strategy is studied, and the mathematical model of multi-shearing and multi-punch NC transverse shear line with multi-shearing and multi-punching as the optimization objective is established, and the parameters of the step are optimized. Based on the mathematical model, an algorithm for solving multi-shearing and multi-punching numerical control transverse shear lines is designed from three aspects: the overall flow of the algorithm, the calculation and optimization of the step and the optimization of the parameters of the step. Thirdly, the automatic machining system of two-shears and three-punch NC transverse shear lines is realized. Based on the theoretical research results in the previous chapters, the design case model and entity class model of the system are established based on the unified modeling language (UML) modeling theory. The chip data conversion module is developed by using Microsoft basic class library (MFC),. The process analysis module and man-machine interface (HMI), are used to realize the automatic generation of machining data of two shears and three punch NC transverse shear lines. Finally, the simulation and application of automatic machining system for two-shears and three-punch NC transverse shear lines are carried out. The parameterized function of the SolidWorks system is used to simulate the data generated by the system, and the accuracy of the data and the feasibility of the processing strategy are verified. The automatic machining system of two shear and three punch NC transverse shear line is installed on the NC transverse shear line of silicon steel sheet developed by a company. The qualified product has been machined.
【學(xué)位授予單位】：廣州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TP301.1;TG659

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本文編號(hào)：2401520