【正文】 ,可用作負載電源。 CPU 226 DC/DC/DC 端子連接可知，CPU 226集成24輸入/16輸出共40個數(shù)字量I/O 點。可連接7個擴展模塊，最大擴展至248路數(shù)字量I/O 點或35路模擬量I/O 點。13K字節(jié)程序和數(shù)據(jù)存儲空間。6個獨立的30kHz高速計數(shù)器，2路獨立的20kHz高速脈沖輸出，具有PID控制器。2個RS485通訊/編程口，具有PPI通訊協(xié)議、MPI通訊協(xié)議和自由方式通訊能力。I/O端子排可很容易地整體拆卸。用于較高要求的控制系統(tǒng)，具有更多的輸入/輸出點，更強的模塊擴展能力，更快的運行速度和功能更強的內(nèi)部集成特殊功能?？赏耆m應(yīng)于一些復(fù)雜的中小型控制系統(tǒng)。CPU ～。 CPU 226 DC/DC/DC 端子連接圖 CPU 226技術(shù)數(shù)據(jù) CPU 226技術(shù)數(shù)據(jù) CPU技術(shù)數(shù)據(jù)本次設(shè)計的銑方機采用PLC控制，由液壓夾緊及定位裝置、刀具滑臺、動力頭等部分組成，其控制部分采用S7—200系列CPU226型號控制器。銑方機工作臺用步進電機控制，該電動機屬于三項交流電機，規(guī)格為55BF003。其主軸電機選用型號為123BL(3)C22030(ST)的交流伺服電機控制。 銑方機硬件電路圖 步進電機驅(qū)動電路圖 伺服電機驅(qū)動電路圖對銑方機硬件電路圖（）的基本情況說明如下：1。油泵電機（）啟動，風(fēng)冷電機（30w）啟動，卡爪張開，人工將工件插進主軸夾頭內(nèi)；2。啟動自動工作按鈕SB1,YV1a得電，夾緊油缸工作將工件夾緊，延時T1約為1秒鐘后，主電機（）旋轉(zhuǎn)；YV2a得電，切深油缸工作將滑臺前推到位；3。伺服電機啟動，切削進給至尺寸為止；4。YV2a斷電、YV2b得電,切深油缸工作將滑臺后拉到位；5。主電機制動，伺服電機反轉(zhuǎn)快速退回到原始位置；6。YV1a失電、YV1b得電，夾緊油缸工作將工件松開，人工卸下已加工好的工件；7。YV1b斷電，恢復(fù)初始狀態(tài)；8。開始下一個循環(huán)操作。根據(jù)控制電路圖可知輸入/。 輸入地址單元分配表 輸出地址單元分配表 控制系統(tǒng)流程圖第6章 總結(jié)至此，按照指導(dǎo)教師布置的任務(wù)，銑方機的機械與控制部分基本完成，所得到的結(jié)果歸納如下：通過方案比較最終決定選擇銑方機，通過計算確定外形、電動機功率的計算及電動機的選擇、傳動裝置的運動和動力參數(shù)、同步帶的選擇、滾珠絲杠的設(shè)計、液壓系統(tǒng)的設(shè)計，并經(jīng)過嚴格校核，設(shè)計的零件基本符合要求。在CAXA的環(huán)境下完成了整個設(shè)計的共七張圖紙，利用CAXA進行改造設(shè)計可以直觀地顯示各種結(jié)構(gòu)，了解結(jié)構(gòu)的合理性，以節(jié)約成本，提高效率并且已基本掌握在CAXA專業(yè)軟件環(huán)境下的簡單操作，基本掌握畫圖的方法，為今后的工作打下了良好的基礎(chǔ)。在液壓系統(tǒng)設(shè)計過程中能了解液壓缸與各個液壓元件的選用，功能和特點，加強了液壓知識的學(xué)習(xí)，對知識進行了鞏固。選用PLC作為控制系統(tǒng)，明白了其中原理，了解其優(yōu)點和不足，并能靈活運用其編程，也為以后打下了基礎(chǔ)。不足之處是所學(xué)軟件時間有限，沒有完全的掌握CAD設(shè)計軟件的精華，尚不能很快捷的使用。通過本設(shè)計的的學(xué)習(xí)，對從整機的角度和系統(tǒng)的觀點了解一般機械一體化產(chǎn)品設(shè)計的規(guī)律和特點，擴展了我對機械結(jié)構(gòu)知識，增強了機械設(shè)計能力，此次設(shè)計過程使我受益匪淺。參考文獻[1][S].北京：國防工業(yè)出版社,2006,5.[2][S].北京：機械工業(yè)出版社，1999,4.[3][S].北京：化工工業(yè)出版社，2003,6.[4][S].北京：化工工業(yè)出版社，2004,1.[5][M].沈陽：東北大學(xué)出版社，2000,12.[6][S].北京：機械工業(yè)出版社，1996,11.[7][M].沈陽：東北大學(xué)出版社，2000,9.[8]章宏甲《液壓傳動》,(06).[9] 鐘肇新,：華南理工大學(xué)出版社,1999.[10][M].哈爾濱：哈爾濱工業(yè)大學(xué)出版社，1999,8.[11]孫桓,[M].北京：高等教育出版社,2001,1[12][M].北京：高等教育出版社,2006,8.[13]：.[14]：[15]吳宗澤，[M].高等教育出版社，[16]蔡春源，機電液設(shè)計手冊[S].東北大學(xué)出版社，[17]朱輝，曹桄，唐保寧，:.[18][M].機械工業(yè)出版社，.[19]Mechanical Drive(Reference Issue).Machine Design[M].54(14),2002.[20] Vishay Siliconix. 3Phase Brushless DC Motor .附錄1：英文及翻譯Pressure transient theoryBefore embarking on the analysis of pressure transient phenomena and the derivation of the appropriate wave equations,it will be usefull to describe the general mechanism of pressure propagation by reference to the events fllowing the instantaneous closure of a value postioned at the medlength point of a frictionless pipeline carrying fluid between two two pipeline sections upstream and downstream of the value are identical in all pressure waves will be propagated in both pipes by valve operation and it will be assumed that rate of value closure precludes the use of rigid column theory.As the valve is closed,so the fluide approaching its upstream face is retarded with a consequent pression of the flude and an expansion od the pipe increase in pressure at the valve results in a pressure wave being propagated upstream which conveys the retardation of flow to the column of fluid approaching the valve along the upstream pressure wave travels through the fluid at the appropriate sonic velocity,which will be shown to depend on the properties of the fluid and the pipe material.Similarly,on the downstream side of the valve the retardation of flow results in a reduction in pressure at the valve,with the result that a negative pressure waves is propagated along the downstream pipe which,in turn,retards the fluid will be assumed that this pressure drop in the downstream pipe is insufficient to reduce the fluid pressure to either its vapour pressure or its dissolved gas release pressure,which may be considerable different.Thus,closure of the valve results in propagation of pressure waves along both pipes and,although these waves are of different sign relative to the steady pressure in the pipe prior to valve operation,the effect is to retard the flow in both pipe pipe itself is affected by the wave propagation as the upstream pipe swells as the pressure rise wave passes along it,while the downstream pipe contracts due to the passage of the pressure reducting magnitude of the deformation of the pipe crosssection depends on the pipe material and can be well demonstrated if,for example,thinwalled rubber tubing is passage of the pressure wave through the fluid is preceded,in practice,by a strain wave propagating along the pipe wall at a velocity close to the sonic velocity in the pipe ,this is a secondary effect and,while knowledge of its existence can explain some parts of a pressuretime trace following valve closure,it has little effect on the pressure levels generated in practical transient situations.Following valve closure,the subsequent pressuretime history will depend on the conditions prevailing at the boundaries of the order to describe the events following valve closure in the simple pipe system outlined above,it will be easier to refer to a series of diagrams illustrating conditions in the pipe at a number of time steps.Assuming that valve closure was instantaneous,the fluid adjacent to the valve in each pipe would have been brought to rest and pressure waves conveying this information would have been propagated at each pipe at the appropriate sonic velocity a later time t,the situation is as shown in wavefronts having moved a distance 1=ct,in each pipe,the deformation of the pipe crosssection will also have traveled a distancel as shown.The pressure waves reach the reservoirs terminating the pipes at a time t=1/ this instant,an unbalanced situation arises at the pipereservior junction,as it is clearly impossible for the layer of fluid adjacent to the reservoir inlet to maintain a pressure different to that prevailing at that depth in the ,a restoring pressure wave having a magnitude suffcient to bring the pipeline pressure