【正文】 d system and control system were designed in details. The design focuses on the design of feed system design and PLC control system. The design of hydraulic system is based on the known conditions, to determine the design of hydraulic project, hydraulic pump, hydraulic cylinder structure, control circuit. The design of PLC control system is mainly the design of electrical control system of hardware and software, including the choice of PLC models, the I\/O port assignment, I\/O hardware wiring diagram, ladder diagram of PLC program design. Finally, the programmable controller of the hydraulic circuit is controlled by PLCKey words: Automatic drilling machine；Hydraulic feed system ； PLCI目 錄第 1 章 緒論 ..................................................................................................................1 研究的目的意義 ................................................................................................1 問(wèn)題的提出、分析以及解決方案 ....................................................................1第 2 章 自動(dòng)鉆床的總體設(shè)計(jì)方案 ..............................................................................3 自動(dòng)鉆床的改造方案的確定 ..........................................................................3 執(zhí)行系統(tǒng)的方案設(shè)計(jì) ........................................................................................3 執(zhí)行系統(tǒng)的功能原理設(shè)計(jì) ..........................................................................4 執(zhí)行系統(tǒng)的運(yùn)動(dòng)規(guī)律 ..................................................................................4 執(zhí)行系統(tǒng)的協(xié)調(diào)設(shè)計(jì)原則 ...........................................................................5 執(zhí)行系統(tǒng)的方案評(píng)價(jià) ...................................................................................5 傳動(dòng)系統(tǒng)方案設(shè)計(jì)和原動(dòng)機(jī)選擇 ...................................................................5 傳動(dòng)系統(tǒng)方案設(shè)計(jì) ...........................................................................................5 控制方案設(shè)計(jì) ..................................................................................................6 本 章小結(jié) ...........................................................................................................7第 3 章 鉆床進(jìn)給系統(tǒng)的設(shè)計(jì) ......................................................................................8 進(jìn)給系統(tǒng)概述與分析 ......................................................................................8 進(jìn)給系統(tǒng)方案圖的確定 ..................................................................................9 工況分析 ..........................................................................................................9 切削力的計(jì)算 ................................................................................................10 切削刀具及相關(guān)參數(shù)的選擇 ....................................................................10 主軸轉(zhuǎn)速及鉆孔時(shí)間的計(jì)算 ....................................................................10 切削力的計(jì)算 ............................................................................................11 鉆床主軸設(shè)計(jì) ................................................................................................12 主軸材料的選擇 ........................................................................................12 軸的結(jié)構(gòu)設(shè)計(jì) ............................................................................................12 軸強(qiáng)度的校核 ..........................................................................................13II 進(jìn)給液壓系統(tǒng)設(shè)計(jì) ........................................................................................14 負(fù)載分析 ....................................................................................................14 液壓缸執(zhí)行元件主要參數(shù)的確定 ............................................................16 本章小結(jié) ........................................................................................................22第 4 章 自動(dòng)鉆床控制系統(tǒng)設(shè)計(jì) ................................................................................23 自動(dòng)鉆床的自動(dòng)化控制要求 ........................................................................23 可編程控制器 PLC 的簡(jiǎn)述 ............................................................................23 自動(dòng)鉆床主軸進(jìn)給系統(tǒng)控制流程 ................................................................24 鉆床進(jìn)給系統(tǒng)電氣原理圖 .............................................................................26 PLC 控制系統(tǒng)程序設(shè)計(jì)如下圖 .....................................................................27 本章小結(jié) .........................................................................................................28第 5 章 設(shè)計(jì)總結(jié) ........................................................................................................29參考文獻(xiàn) ......................................................................................................................30致謝 ..............................................................................................................................31基于 PLC 的臺(tái)式鉆床控制系統(tǒng)改造及其進(jìn)給系統(tǒng)設(shè)計(jì) 作者：田素坤 第 1 頁(yè) 共 31 頁(yè)第 1 章 緒論 研究的目的意義當(dāng)今社會(huì)，在現(xiàn)實(shí)生產(chǎn)中，存在自動(dòng)化程度不高，難以進(jìn)行大批量的生產(chǎn)；工作效率低，且工人的工作環(huán)境惡劣；占用人力較多，操作固定不變易出錯(cuò)；精度不高，工件裝夾費(fèi)時(shí)，加工產(chǎn)品質(zhì)量不高問(wèn)題，因此，我們要在實(shí)現(xiàn)鉆床加工的自動(dòng)化、減少生產(chǎn)力的投入生產(chǎn)和與其它工藝流程相結(jié)合等問(wèn)題上來(lái)解決這些問(wèn)題，同時(shí)也要考慮經(jīng)濟(jì)問(wèn)題。 問(wèn)題的提出、分析以及解決方案鉆床指主要是用鉆頭在工件上加工孔的機(jī)床。機(jī)床加工時(shí)，旋轉(zhuǎn)運(yùn)動(dòng)由花鍵傳入，而進(jìn)給運(yùn)動(dòng)則由齒輪通過(guò)齒條帶動(dòng)套筒在鑲套內(nèi)運(yùn)動(dòng)。鉆床執(zhí)行系統(tǒng)的運(yùn)動(dòng)規(guī)律如下