【正文】 he necessary calculation to determine the parameters of hydraulic system which determine to choose hydraulic ponents and system structure of the specification. The hydraulic system of CNC milling machine is new and original beautiful, the driving force system adopts hydraulic pressure system that makes the structure simple and pact, the action quick and reliable. This paper analyzed the operation condition of the CNC milling machine, and gives the analysis for average clamping device to improve the method, manufacturing quality, the actual production has certain directive significance Key words： Modern machinery； CNC milling machine； Clamping device； Hydraulic system design 畢業(yè)設(shè)計(jì)（論文） III 目錄 摘要 .................................................................................................................................................................. I ABSTRACT .................................................................................................................................................. II 目錄 ............................................................................................................................................................... III 1 液壓傳動(dòng)的發(fā)展?fàn)顩r以及優(yōu)缺點(diǎn) ............................................................................................................1 國內(nèi)液壓傳動(dòng)的發(fā)展?fàn)顩r ................................................. 1 國外液壓傳動(dòng)的發(fā)展?fàn)顩r ................................................. 1 液壓傳動(dòng)的優(yōu)缺點(diǎn) ...................................................... 1 .......................................................................................................1 ........................................................................................................................2 2 液壓系統(tǒng)的設(shè)計(jì) ..........................................................................................................................................3 設(shè)計(jì)要求 ...................................................................................................................................................3 .............................................................. 3 Ⅰ工位夾緊缸的負(fù)載計(jì)算 ........................................................................................................3 Ⅱ工位夾緊缸的負(fù)載計(jì)算 ......................................................................................................4 液壓系統(tǒng)主要參數(shù)的確定 ................................................. 4 1p 的確定 .........................................................................................................4 ............................................ 5 Ⅰ工位夾緊缸主要結(jié)構(gòu)參數(shù)的確定 .........................................................................................5 Ⅱ工位夾緊缸主要結(jié)構(gòu)參數(shù)的確定 .......................................................................................6 液壓缸工作循環(huán)中各階段的各項(xiàng)參數(shù) ....................................................................................7 3液壓系統(tǒng)原理圖的擬定和方案論證 ........................................................................................................9 ............................................... 9 ................................................... 9 ................................................ 10 、選擇與合成 ............................................ 11 ................................................ 11 4 液壓元件的計(jì)算和選擇 .......................................................................................................................... 13 液壓泵的確定 ......................................................... 13 閥類的選擇 ........................................................... 16 選擇依據(jù) ................................................................................................................................ 16 選擇閥類元件應(yīng)注意的問題 ............................................................................................... 16 液壓附件的計(jì)算和選擇 .................................................. 17 確定管件的尺寸 ................................................................................................................... 17 確定油箱容積 ........................................................................................................................ 18 5估算液壓系統(tǒng)性能 ................................................................................................................................... 20 .................................................. 20 畢業(yè)設(shè)計(jì)（論文） IV 系統(tǒng)的發(fā)熱和溫升 ..................................................... 21 6結(jié)論 ............................................................................................................................................................ 24 致謝 ............................................................................................................................................................... 25 參考文獻(xiàn) ...................................................................................................................................................... 26 畢業(yè)設(shè)計(jì)（論文） 1 1 液壓傳動(dòng)的發(fā)展?fàn)顩r以及優(yōu)缺點(diǎn) 國內(nèi)液壓傳動(dòng)的發(fā)展?fàn)顩r 近年來，我國液壓氣動(dòng)密封行業(yè)堅(jiān)持技術(shù)進(jìn)步，加快新產(chǎn)品開發(fā)，取得良好成效，涌現(xiàn)出一批各具特色的高新技術(shù)產(chǎn)品。數(shù)控銑床的液壓系統(tǒng)，外形新穎美觀，動(dòng)力系統(tǒng)采用液壓系統(tǒng)，結(jié)構(gòu)簡單、緊湊、動(dòng)作靈敏可靠。畢業(yè)設(shè)計(jì)（論文） I 摘要 作為現(xiàn)代機(jī)械設(shè)備實(shí)現(xiàn)傳動(dòng)與控制的重要技術(shù)手段，液壓技術(shù)在國民經(jīng)濟(jì)各領(lǐng)域得到了廣泛的應(yīng)用 .與其他傳動(dòng)方式相比較，液壓傳動(dòng)具有其獨(dú)特的技術(shù)優(yōu)勢(shì)，其應(yīng)用領(lǐng)域幾乎囊括了國民經(jīng)濟(jì)各工業(yè)部門。 本文根據(jù)數(shù)控銑床的用途﹑特點(diǎn)和要求，利用液壓傳動(dòng)的基本原理，擬定出合理的液壓系統(tǒng)圖，再經(jīng)過必要的計(jì)算來確定液壓系統(tǒng)的參數(shù)，然后按照這些參數(shù)來選用液壓元件的規(guī)格和進(jìn)行系統(tǒng)的結(jié)構(gòu)設(shè)計(jì)。 本文通過對(duì)數(shù)控銑床的工況分析 , 給出了 對(duì)于一般夾緊裝置分析的方法 , 對(duì)于提高制造質(zhì)量、實(shí)際生產(chǎn)具有一定的指導(dǎo)意義。北京機(jī)床所的直動(dòng)式電液伺服閥、杭州精工液壓機(jī)電公司的低噪聲比例溢流閥（擁有專利）、寧波華液公司的電液比例壓力流量閥（已申請(qǐng)專利），均為機(jī)電一體化的高新技術(shù)產(chǎn)品，并已投入批量生產(chǎn)，取得了較好的經(jīng)濟(jì)效益。天津特精液壓股份有限公司的三種齒輪泵，具有結(jié)構(gòu)新穎、體積小、耐高壓、噪聲低、性能指標(biāo)先進(jìn)等特點(diǎn)。另外，還有廣東廣液公司的高壓高性能葉片泵、寧波永華公司的超高壓軟管總成、無錫氣動(dòng)技術(shù)研究所有限公司為各種自控設(shè)備配套的 WPI 新型氣缸系列都是很有特色的新產(chǎn)品。 國外液壓傳動(dòng)的發(fā)展?fàn)顩r 20 世紀(jì) 80 年代以來，逐步完善和普及的計(jì)算機(jī)控制技術(shù)和集成傳感技術(shù)為液壓技術(shù)與電子技術(shù)相結(jié)合創(chuàng)造了條