本文選題：工業(yè)閥門(mén) + 裝配生產(chǎn)線　； 參考：《天津理工大學(xué)》2017年碩士論文

【摘要】：在新的時(shí)代背景下,作為基礎(chǔ)型工業(yè)的閥門(mén)制造業(yè)將會(huì)以高技術(shù)支持與高產(chǎn)品質(zhì)量為導(dǎo)向,通過(guò)對(duì)生產(chǎn)工藝進(jìn)一步優(yōu)化,實(shí)現(xiàn)技術(shù)革新。國(guó)內(nèi)的閥門(mén)生產(chǎn)多存在于低端領(lǐng)域,除了對(duì)制造工藝的進(jìn)一步強(qiáng)調(diào),關(guān)于生產(chǎn)線提出了更高要求,希望通過(guò)自動(dòng)化生產(chǎn)逐步取代手工式的勞動(dòng)力輸出。本文中設(shè)計(jì)的蝶形閥門(mén)裝配生產(chǎn)線就是在此背景下得以展開(kāi)的,著力于生產(chǎn)線中核心的裝配環(huán)節(jié),目的是實(shí)現(xiàn)裝配的自動(dòng)化生產(chǎn)。經(jīng)過(guò)對(duì)實(shí)際生產(chǎn)的詳細(xì)了解,結(jié)合主流生產(chǎn)線的理論研究方法,分析得到現(xiàn)有實(shí)際生產(chǎn)的相關(guān)滯后參數(shù),展開(kāi)了對(duì)裝配線的重新布局和工序編定,得到了整條裝配生產(chǎn)線的設(shè)計(jì)方案,在解放勞動(dòng)力的同時(shí),實(shí)現(xiàn)裝配效率的提升,產(chǎn)量的翻倍式增長(zhǎng)。對(duì)整條生產(chǎn)線的結(jié)構(gòu)設(shè)計(jì)包括主裝配線和分裝配線。在分裝配線端,通過(guò)附有多個(gè)“C”型夾具的旋轉(zhuǎn)架轉(zhuǎn)動(dòng),利用上下組合氣缸實(shí)現(xiàn)碟板和膠套組裝。在主裝配線端,通過(guò)機(jī)械手實(shí)現(xiàn)對(duì)支線端組合件的抓取;利用垂直位置的氣缸下壓,把機(jī)械手中的組合件壓入閥體;利用單氣缸在主裝配線的末端的推送,完成最后對(duì)閥桿的組裝。其中主線和直線的推進(jìn)形式為步進(jìn)式,相關(guān)控制結(jié)構(gòu)相同,都是利用滑塊和限位結(jié)構(gòu)組合作用實(shí)現(xiàn)生產(chǎn)線的傳動(dòng)和停止。在動(dòng)力裝置的選用上,按作用可分為傳動(dòng)氣缸、組裝氣缸、控手伺服電機(jī)。通過(guò)CAD、Solidworks與ANSYS Workbench的對(duì)接,實(shí)現(xiàn)對(duì)傳動(dòng)裝置、動(dòng)力裝置的有限元模擬。在對(duì)施加載荷的鏈條和步進(jìn)式推動(dòng)結(jié)構(gòu)進(jìn)行靜力學(xué)分析后,選取了最優(yōu)推動(dòng)工位,通過(guò)推動(dòng)結(jié)構(gòu)的應(yīng)力分布,得到其結(jié)構(gòu)的應(yīng)力值均小于許用應(yīng)力,在安全范圍內(nèi),確定了傳動(dòng)的可行性;在對(duì)伺服電機(jī)控制的機(jī)械手結(jié)構(gòu)進(jìn)行模態(tài)分析后,確定了結(jié)構(gòu)的固有頻率,避免了與電機(jī)的頻率產(chǎn)生共振。此設(shè)計(jì)中各工序的控制由可編輯邏輯控制器(PLC)實(shí)現(xiàn),此過(guò)程結(jié)合了生產(chǎn)要素和工作原理,對(duì)PLC控制程序提出了對(duì)應(yīng)控制要求。
[Abstract]:Under the background of the new era, the valve manufacturing industry as the base industry will be guided by high technology support and high product quality, through the further optimization of production process, technological innovation will be realized. The domestic valve production mostly exists in the low-end field, except for the further emphasis on the manufacturing process, the production line put forward higher requirements, hoping to replace manual labor output step by step through automatic production. The butterfly valve assembly line designed in this paper is carried out under this background, focusing on the core assembly link of the production line, in order to realize the automatic production of assembly. Through the detailed understanding of actual production, combined with the theoretical research method of mainstream production line, the relevant lag parameters of actual production are obtained, and the rearrangement of assembly line and process planning are carried out. The design scheme of the whole assembly line is obtained. The assembly efficiency is improved and the output is doubled while the labor force is liberated. The structural design of the whole production line includes the main assembly line and the distribution assembly line. At the end of the assembly line, the disc and rubber sleeve are assembled by rotating the rotating frame with several "C" jigs and using the upper and lower combined cylinders. At the end of the main assembly line, the assembly of the branch line end is grasped by the manipulator; the assembly of the mechanical hand is pressed into the valve body by the pressure of the cylinder in the vertical position; and the push of the single cylinder at the end of the main assembly line is used. Complete the final assembly of the stem. Among them, the main line and straight line propulsion form is step type, the related control structure is the same, the combination of sliding block and limit structure is used to realize the transmission and stop of the production line. In the selection of power device, according to the role can be divided into transmission cylinder, assembly cylinder, control hand servo motor. The finite element simulation of transmission device and power device is realized through the docking of CAD Solidworks and ANSYS Workbench. After the statics analysis of the chain and stepping propulsion structure under load, the optimal driving station is selected. By the stress distribution of the impelling structure, the stress values of the structure are all less than the allowable stress, which is within the safe range. The feasibility of transmission is determined. After modal analysis of manipulator structure controlled by servo motor, the natural frequency of the structure is determined to avoid resonance with the frequency of motor. In this design, the control of each procedure is realized by PLC, which combines the production elements and the working principle, and puts forward the corresponding control requirements for PLC control program.
【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TH186

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