【正文】 一般大型機床改造，只花新機床購置費用的 1/3，交貨期短。在美國、日本、德國，用數控技術改造機床和生產線具有廣闊的市場，已形成了機床和生產線數控改造的新的行業(yè)。數控技術已經成為制造業(yè)自動化的核心技術和基礎技術。 由于計 機有記憶和存儲能力，可以將輸入的程序記住和存儲下來，然后按程序規(guī)定的順序自動 去執(zhí)行，從而實現(xiàn)自動化。 隨著人工智能在計 機領域的不斷滲透和發(fā)展，數控系統(tǒng)的智能化程度將不斷提高。 到了 1990 年， PC 機的性能已發(fā)展到很高的階段，可以滿 作為數控系統(tǒng)核心部件的要求。 到 1970 年，通用小型計 機業(yè)已出現(xiàn)并成批生產。 1946 年誕生了世界上第一臺電子計 機，這表明人類創(chuàng)造了可增強和部分代替腦力勞動的工具。從系統(tǒng)的結構得知，油缸有桿腔與排油管間有一很大的容積，如圖 6a 所示?？梢姴捎米哉{背莊調速系統(tǒng)作為驅動系統(tǒng)的滑臺在抑制前沖方面具有良好的特性，其中自調背壓閥起了很大作用。本論文中所使用的符號： s1流源，即調速閥出口流量； Sel— 滑臺滑動摩擦力 R 一滑臺等效粘性摩擦系數 I1— 滑臺與油缸的質量 12— 自調背壓閥閥心質量 C c2— 油缸無桿腔及有桿腔的液容 11 C2— 自調背壓閥彈簧柔度 R1, R2 自調背壓閥阻尼孔液阻， R9— 自調背壓閥閥口液阻 Se2— 自調背壓閥彈簧的初始預緊力； I4, I5— 管路的等效液感 C C6— 管路的等效液容： R5, R7管路的等效液阻； V3, V4— 油缸無桿腔及有桿腔內容積； P3, P4— 油缸無桿腔及有桿腔的壓力 F— 滑臺承受負載， 滑臺前沖現(xiàn)象是作用在滑臺上的負載突然消失（如鉆透工作情況 )引起的。 2動態(tài)數學模型 組合機床滑臺的液壓驅動系統(tǒng)一自調背壓調速系統(tǒng)的工作原理圖如圖 I所示。通過計算機數字仿真，分析了滑臺產生前沖和運動不平穩(wěn)的原 及主要影響 素。s experience, the processing general rule and the special rule store in the system, take the craft parameter database as the strut, the establishment has the artificial intelligence the expert system. introduces the breakdown to diagnose the expert system intellectualized numeral servo drive May through the automatic diagnosis load, but the automatic control parameter, causes the actuation system to obtain the best movement. Second, engine bed numerical control transformation necessity From on microscopic looked below that, the numerical control engine bed has the prominent superiority pared to the traditional engine bed, moreover these superiority e from the puter might which the numerical control system contains. may process the traditional engine bed cannot process the curve, the curvedsurface and so on the plex ponents. Because the puter has the excellent operation ability, may the instant accurately calculate each coordinate axis instant to be supposed the movement physiological load of exercise, therefore may turn round the synthesis plex curve or the curved surface. may realize the processing automation, moreover is the flexible automation, thus the efficiency may enhance 3 ~ 7 times pared to the traditional engine bed. Because the puter has the memory and the memory property, may the procedure which inputs remember and save, then the order which stipulated according to the procedure automatic carries out, thus realization automation. The numerical control engine bed so long as replaces a procedure, may realize another work piece processing automation, thus causes the single unit and the small batch of production can automate, therefore is called has realized flexible automation. From on macroscopic looked that, the industry developed country armed forces, the airplane weapon industry, in the end of the 7039。t big, oil urn two chamber pressures also more and greatly didn39。 V3, the V4oil urn has no pole chamber and has a pole chamber the contents to accumulate。 1 附 錄 附錄 1 英文原文 Combine tool machine a slippery pedestal the research of the dynamic state characteristic 【 Summary】 this text make use of power key to match diagram and appearance space analyticalthe method hurtle and exercise a steady sex problem to carry on analysis and study towards bining tool machine slip pedestal of exly, the liquid which builds up a slippery pedestalpresses to drive system a from adjust to carry on the back to press to adjust soon dynamic statemathematics model of a calculator numeral to imitate really, hurtle and exercise notsteady reason and main impact factor before analyzing a slippery pedestal a in get, if reasonably design a liquid to press an urn with from adjust to carry on the back to press toadjust structure size of press the valve, can make the dynamic state characteristic of slipperypedestal shown a Zhao improvement. One, preface Combine a tool machine work in, the varieties which slip a size of sport speed and direction andthe load bear all influence degree differently it work in the work enter the on the stage load of suddenly disappear causable of ex hurtle and load ofthe period variety cause of the sport gravamen be steady, all is processed the surface quality ofpiece the influence, severity hour will cause the knife according to tool machinefactory in Dalian, the author adopts power key to match diagram and the analytical method establishment of the appearance space to bine the new liquid that the tool machine slips apedestal to press to drive system a from adjust to carry on the back to press to adjust soon dynamic state mathematics model of a calculator numeral to imitate really and slippery the pedestal produce ago hurtle and exercise not steady reason and main impact factor, in order to improvement slippery the dynamic state characteristic of pedestal. Two, dynamic state mathematics model The liquid which bines tool machine to slip a pedestal presses to drive system a from adjustto carry on the back to press to adjust soon the work principle diagram of system,such as diagram I, to system is the work circulation which uses to plete the work enter a stop a back quickly.When slippery pedestal work enter, 34 change to be placed in diagram to show a right toward the valve, the oil pump of provide hydraulicpneumatic dint under thefunction which over flows valve look like ground to keep Heng settle, the oil39。 P3, the pressure which have no pole chamber and have a pole chamber of the P4oil urn Fthe slippery set bear a load, Vslip a pedestal sport this literary grace hard working rate key matches diagram and appearance space to fold a method establishment sport mathematics model of the system for cent. Power key39。t change, end cause from adjust to carry on the back a function of press the valve not enough obvious. Five, improve measure Study result enunciation, with from adjust to carry on the back to press to adjust soon system for dr