喜歡就充值下載吧。。資源目錄里展示的文件全都有，，請(qǐng)放心下載，，有疑問咨詢QQ:414951605或者1304139763 ======================== 喜歡就充值下載吧。。資源目錄里展示的文件全都有，，請(qǐng)放心下載，，有疑問咨詢QQ:414951605或者1304139763 ======================== 沈陽化工大學(xué)科亞學(xué)院學(xué)士學(xué)位論文 第五章 液壓系統(tǒng)的PLC控制設(shè)計(jì) 摘要 對(duì)四柱型液壓機(jī)的設(shè)計(jì)，四柱液壓機(jī)主機(jī)由梁，柱，表，動(dòng)梁，主缸，頂出缸，如主機(jī)設(shè)計(jì)最大工作負(fù)荷為1000000牛。通過液壓缸的負(fù)載變化情況分析，制定液壓系統(tǒng)原理圖，對(duì)電磁鐵的工作。主液壓缸的設(shè)計(jì)，主要的尺寸和流量計(jì)算，主缸的交換控制行程開關(guān)、安全極限速度的旅行。根據(jù)技術(shù)要求和液壓泵的設(shè)計(jì)計(jì)算選擇液壓元件，如GE系列電磁閥。通過液壓系統(tǒng)壓力損失和溫升計(jì)算，液壓系統(tǒng)的設(shè)計(jì)可以滿足液壓順序循環(huán)的要求，四柱液壓機(jī)的設(shè)計(jì)可以實(shí)現(xiàn)塑性材料的鍛造，沖壓，冷擠壓，矯直，彎曲成形工藝。用于液壓系統(tǒng)的PLC控制系統(tǒng)，通過泵和油缸及各種液壓閥實(shí)現(xiàn)能量的轉(zhuǎn)換，調(diào)節(jié)和輸送，完成各種工藝動(dòng)作的循環(huán)。 水工結(jié)構(gòu)緊湊，可靠的靈敏度和動(dòng)作速度，能耗小，噪音低，壓力和行程可在規(guī)定的范圍內(nèi)調(diào)整，操作簡單。 關(guān)鍵詞：四柱液壓機(jī)；液壓系統(tǒng)；PLC Abstract To the design of the four-column hydraulic press, four-column hydraulic press is mainly composed of host, beam, column, table, moving beam, master cylinder, from the top of the cylinder. The mainframe design maximum working load of the 1000 kn. Conditions of the hydraulic cylinder hydraulic cylinder load analysis to determine the change of the hydraulic system development plan of action and the electromagnet work in order. And the size of the main hydraulic cylinder design and calculation of main cylinder and the access and security the flow rate of the master cylinder stroke limit switch through the stroke control. Calculated according to the technical requirement and the choice of the design of the hydraulic pump electromagnetic valve other gm series hydraulic components. Hydraulic system pressure loss and temperature rise, the design of the hydraulic system can satisfy the demands of action sequence cycle hydraulic, four-column hydraulic press is developed plastic material, forging, stamping, cold room ion, straightening, bending and forming process. PLC control system, through a variety of hydraulic pump, hydraulic cylinder and valve to realize the energy conversion, the hydraulic system, regulating and allocation, finish all kinds of craft operating cycle. A sensitive and reliable hydraulic machine structure is compact, the movement speed, energy consumption, low noise, pressure and stroke can be adjusted within the prescribed scope, the operation is simple. Keywords: Four-column hydraulic press; hydraulic system; PLC 目錄 第一章 緒論 1 1.1 概述 1 1.2 發(fā)展概況 2 第二章 液壓系統(tǒng)工況分析 3 2.1 載荷的組成和計(jì)算 3 2.1.1 主液壓缸載荷的組成與計(jì)算 3 2.1.2 繪制負(fù)載圖和速度圖 4 2.1.3 初選系統(tǒng)工作壓力 5 2.2 液壓系統(tǒng)及元件的設(shè)計(jì) 5 2.2.1 擬定液壓系統(tǒng)圖 5 2.2.2 電磁鐵動(dòng)作順序 7 第三章 液壓缸的設(shè)計(jì) 9 3.1 液壓缸基本結(jié)構(gòu)設(shè)計(jì) 9 3.1.1 液壓缸的類型 9 3.1.2 缸口部分結(jié)構(gòu) 9 3.1.3 缸底結(jié)構(gòu) 9 3.2 缸體結(jié)構(gòu)設(shè)計(jì) 9 3.2.1 液壓缸主要參數(shù)的確定 9 3.2.2 液壓缸動(dòng)作時(shí)的流量 11 3.2.3 缸的設(shè)計(jì)計(jì)算 11 3.2.4 活塞的設(shè)計(jì) 14 3.2.5 活塞桿的設(shè)計(jì) 16 3.2.6 導(dǎo)向環(huán)的設(shè)計(jì) 18 3.2.7 導(dǎo)向套的設(shè)計(jì) 18 3.2.8 缸蓋的設(shè)計(jì) 20 第四章 液壓元件的選擇及性能驗(yàn)算 22 4.1 液壓元件的選擇 22 4.1.1 液壓泵的選擇 22 4.1.2 GE系列閥簡介及選擇 23 4.1.3 輔助元件的選擇 24 4.1.4 管件的選擇及計(jì)算 25 4.1.5 油箱容量的確定 26 4.2液壓系統(tǒng)性能驗(yàn)算 26 4.2.1 液壓系統(tǒng)壓力損失 27 4.2.2 液壓系統(tǒng)的發(fā)熱溫升計(jì)算 28 第五章 液壓系統(tǒng)的PLC控制設(shè)計(jì) 30 5.1 PLC概述 30 5.2 控制部分設(shè)計(jì) 30 結(jié)論 35 參考文獻(xiàn) 致謝 4