本文選題：PLC + 精益生產�。� 參考：《沈陽航空航天大學》2011年碩士論文

【摘要】：本課題來源于某化油器生產線的改造項目。原生產線的加工工藝和控制系統(tǒng)落后,已不能適應企業(yè)的發(fā)展要求。為了提高生產效率和加工質量,設計和開發(fā)了基于PLC控制的化油器自動化生產線。 首先,分析生產線的加工工藝流程,確定生產線的總體設計思路;結合精益生產的設計思想,設計了能實現快速換模的工件定位板;然后,提出PLC控制系統(tǒng)總體設計的要求、步驟和基本結構。 PLC控制系統(tǒng)的設計主要包括硬件設計和軟件設計兩部分;硬件設計主要有控制系統(tǒng)電路的設計、電器元件的選型、PLC的選型以及PLC輸入/輸出模塊的設計。其中,控制系統(tǒng)選用性能優(yōu)良的三菱FX系列PLC作為控制器,保證了系統(tǒng)的穩(wěn)定性和擴展性。軟件設計部分是PLC控制系統(tǒng)設計的核心,PLC程序的總體結構采用模塊化設計和跳轉設計;模塊化設計使各程序模塊的功能相對對立,結構清晰,而跳轉設計可實現各程序模塊之間的有選擇地執(zhí)行。各單元的自動控制程序采用順序控制設計法,程序簡潔易懂,提高了程序的設計效率。以上的程序設計方法都增強了程序的可讀性和可維護性,便于進行再次的修改升級。 最后,本控制系統(tǒng)組裝、調試成功后投入使用。生產實踐證明,該控制系統(tǒng)運行效果良好,使生產效率和加工質量都得到大幅度提高。
[Abstract]:This subject comes from the revamping project of a carburetor production line. The processing technology and control system of the original production line are backward and can not meet the development requirements of the enterprise. In order to improve production efficiency and processing quality, a carburetor automation production line based on PLC control was designed and developed. First of all, the processing process of the production line is analyzed, and the overall design idea of the production line is determined. In combination with the design idea of lean production, a workpiece positioning board is designed to realize rapid die changing. Then, the requirements of the overall design of the PLC control system are put forward. Steps and basic structure. The design of PLC control system mainly includes two parts: hardware design and software design. The hardware design mainly includes the design of control system circuit, the selection of electrical components and the design of PLC input / output module. In the control system, Mitsubishi FX series PLC is chosen as the controller, which ensures the stability and expansibility of the system. The software design part is the core of PLC control system design, which adopts modularization design and jump design, which makes the function of each program module relatively opposite, and the structure is clear. The jump design can realize the selective execution among the program modules. The automatic control program of each unit adopts sequential control design method, which is simple and easy to understand, and improves the efficiency of program design. The above program design methods enhance the readability and maintainability of the program, so it is easy to modify and upgrade again. Finally, the control system is assembled and successfully debugged and put into use. The production practice shows that the control system works well and the production efficiency and processing quality are greatly improved.
【學位授予單位】：沈陽航空航天大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH165

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