【正文】
對數(shù)控加工技術(shù)提出了更高的要求。同時,采用超大規(guī)模的集成電路和多微處理器結(jié)構(gòu),以提高系統(tǒng)的數(shù)據(jù)處理能力,即提高插補運算的速度和精度。目前,陶瓷刀具和金 剛石涂層刀具已開始得到應(yīng)用。 ( 3) .智能化現(xiàn)代數(shù)控機床將引進自適應(yīng)控制技術(shù),根據(jù)切削條件的變化,自動調(diào)節(jié)工作參數(shù),使加工過程中能保持最佳工作狀態(tài),從而得到較高的加工精度和較小的表面粗糙度,同時也能提高刀具的使用壽命和設(shè)備的生產(chǎn)效率。為實現(xiàn)更 高的故障診斷要求,其發(fā)展趨勢是采用人工智能專家診斷系統(tǒng)。 ( 5) .可靠性最大化數(shù)控機床的可靠性一直是用戶最關(guān)心的主要指標。利用報警提示,及時排除故障;利用容錯技術(shù),5 對重要部件采用“冗 余”設(shè)計,以實現(xiàn)故障自恢復(fù);利用各種測試、監(jiān)控技術(shù),當生產(chǎn)超程、刀損、干擾、斷電等各種意外時,自動進行相應(yīng)的保護。這樣可以方便地將它安裝在機床設(shè)備上,更便于對數(shù)控機床的操作使用。 There are such research of the respect as intelligent automatic programming , intelligent manmachine interface , intelligence diagnosing , intelligent monitoring ,etc.. B、 The numerical control system melts and studies open Mainly showing in the following aspects: The development of the numerical control system is on unified operation platform, face the lathe producer and support finally, through changing, increasing or cutting out the structure target(numerical control target ), form the seriation, and can use users specially conveniently and the technical knowhow is integrated in the control system, realize the open numerical 8 control system of different variety , different grade fast, form leading brand products with distinct distinction. System structure norm of the open numerical control system at present, norm , disposing the norm , operation platform , numerical control systematic function storehouse and numerical control systematic function software developing instrument ,etc. are the core of present research to pass through. C、 Meeting the manufacture system of the production line , demand for the information integration of the manufacturing pany workedly greatly of numerical control equipment, it is a basic unit of realizing the new manufacture mode too. Classification of the machining center ( 1) Process according to main shaft space position when it classifies to be as follows, horizontal and vertical machining center. Horizontal machining center, refer to the machining center that the axis level of the main shaft is set up . Horizontal machining center for 35 sport coordinate axis, a mon one three rectilinear motion coordinate axis and one turn the coordinate axis of sports round (turn the workingbench round), it can one is it is it finish other 4 Taxi processing besides installing surfaces and top surfaces to insert to install in work piece, most suitable for processing the case body work piece . Compared with strength type machining center it, the structure is plicated, the floor space is large, quality is large, the price is high. Vertical machining center, the axis of the main shaft of the vertical machining center, in order to set up vertically, its structure is mostly the regular post type, the workingbench is suitable for processing parts for the slippery one of cross, have 3 rectilinear motion coordinate axis generally , can find a room for one horizontal numerical control revolving stage (the 4th axle ) of axle process the spiral part at workingbench. The vertical machining center is of simple structure, the floor space is small, the price is low, after allocating various kinds of enclosures , can carry on the processing of most work pieces . Largescale gantry machining center, the main shafts are mostly set up vertically, is especially used in the largescale or with plicated form work piece , is it spend 9 the many coordinate gantry machining center to need like aviation , aerospace industry , some processing of part of largescale steam turbine. Five machining centers, this kind of machining center has function of the vertical and horizontal machining center, one is it after inserting , can finish all five Taxi processing besides installing the surface to install in work piece, the processing way can make form of work piece error lowest , save 2 times install and insert working, thus improve production efficiency , reduce the process cost. (2)Classify by craft use Is it mill machining center to bore, is it mill for vertical door frame machining center , horizontal door frame mill the machining center and Longmen door frame mill the machining center to divide into. Processing technology its rely mainly on the fact that the door frame is milled, used in case body, shell and various kinds of plicated part special curve and large processes , curved surface of outline process, suitable for many varieties to produce in batches small. Complex machining center, point five times and pound and process mainly, the main shaft head can be turned round automatically, stand, lie and process, after the main shaft is turned round automatically, realize knowing that varies in the horizontal and vertical direction. (3)Classify by special function Single workingbench , a pair of workingbench machining center。 One hundred sheets of storehouses connects and writes hands to add the main shaft and change one hundred sheets of machining centers。 Utilize various kinds of test , control technology , exceed Cheng , one one hundred sheets of damages , interfering , cutting out ,etc. at the time of various kinds of accidents as production, carry on corresponding protection automatically. ( 6) . Control system miniaturization systematic miniaturization of numerical control benefit and bine the machine , electric device for an anic whole. Adopt the super largescale integrated ponent , multilayer printed circuit board mainly at present, adopt the threedimensional installation method , make the electronic devices and ponents must use the high density to install, narrow systematic occupying the space on a larger scale. And utilize the newtype slim display of colored liquid crystal to substitute the traditional cathode ray tube, will make the operating system of numerical control miniaturize further. So can install it on the machine tool conveniently, benefit the operation of the numerical control lathe 13 correctly even