【正文】 給運動。所以，本文研究的是基于 PLC 的臺式鉆床控制系統(tǒng)改造及其進給系統(tǒng)設計。關鍵詞：自動鉆床；液壓進給系統(tǒng)；PLCAbstractThe bench drill is the metal cutting tools in mechanical machining, this paper is transformation and design of the desktop machine, mainly through the introduction of hydraulic system and PLC control system will be transformed into the automatic drilling machine.The design process is first carried out in accordance with the general machine design steps, and then the feed 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 問題的提出、分析以及解決方案 ....................................................................1第 2 章 自動鉆床的總體設計方案 ..............................................................................3 自動鉆床的改造方案的確定 ..........................................................................3 執(zhí)行系統(tǒng)的方案設計 ........................................................................................3 執(zhí)行系統(tǒng)的功能原理設計 ..........................................................................4 執(zhí)行系統(tǒng)的運動規(guī)律 ..................................................................................4 執(zhí)行系統(tǒng)的協(xié)調(diào)設計原則 ...........................................................................5 執(zhí)行系統(tǒng)的方案評價 ...................................................................................5 傳動系統(tǒng)方案設計和原動機選擇 ...................................................................5 傳動系統(tǒng)方案設計 ...........................................................................................5 控制方案設計 ..................................................................................................6 本 章小結 ...........................................................................................................7第 3 章 鉆床進給系統(tǒng)的設計 ......................................................................................8 進給系統(tǒng)概述與分析 ......................................................................................8 進給系統(tǒng)方案圖的確定 ..................................................................................9 工況分析 ..........................................................................................................9 切削力的計算 ................................................................................................10 切削刀具及相關參數(shù)的選擇 ....................................................................10 主軸轉(zhuǎn)速及鉆孔時間的計算 ....................................................................10 切削力的計算 ............................................................................................11 鉆床主軸設計 ................................................................................................12 主軸材料的選擇 ........................................................................................12 軸的結構設計 ............................................................................................12 軸強度的校核 ..........................................................................................13II 進給液壓系統(tǒng)設計 ........................................................................................14 負載分析 ....................................................................................................14 液壓缸執(zhí)行元件主要參數(shù)的確定 ............................................................16 本章小結 ........................................................................................................22第 4 章 自動鉆床控制系統(tǒng)設計 ................................................................................23 自動鉆床的自動化控制要求 ........................................................................23 可編程控制器 PLC 的簡述 ............................................................................23 自動鉆床主軸進給系統(tǒng)控制流程 ................................................................24 鉆床進給系統(tǒng)電氣原理圖 .............................................................................26 PLC 控制系統(tǒng)程序設計如下圖 .....................................................................27 本章小結 .........................................................................................................28第 5 章 設計總結 ........................................................................................................29參考文獻 ......................................................................................................................30致謝 ....................................................................................................