【正文】 有接觸，電化學(xué)加工是加工薄壁、易變形零件及表面容易破裂的脆性材料的首選。由于這個(gè)原因，激光切削所產(chǎn)生的切口非常窄。激光加工適用于任何可以很好地吸收激光輻射的材料，而傳統(tǒng)加工工藝必須針對(duì)不同硬度和耐磨性的材料選擇合適的刀具。超聲加工超聲加工為日益增長(zhǎng)的對(duì)脆性材料如單晶體、玻璃、多晶陶瓷材料的加工需求及不斷提高的工件復(fù)雜形狀和輪廓加工提供了解決手段。超聲加工系統(tǒng)包括音極組件、超聲發(fā)生器、磨料供給系統(tǒng)及操作人員的控制。另外，除了提供磨粒進(jìn)行切削外，漿料還可對(duì)音極進(jìn)行冷卻，并將切削區(qū)的磨粒和切屑帶走。 types of nontraditional machining processes have been developed to meet extra required machining these processes are employed properly, they offer many advantages over traditional machining mon nontraditional machining processes are described in the following Discharge Machining(EDM)Electrical discharge machining(EDM)sometimes is colloquially referred to as spark machining, spark eroding, burning, die sinking or wire is one of the most widely used nontraditional machining main attraction of EDM over traditional machining processes such as metal cutting using different tools and grinding is that this technique utilizes thermoelectric process to erode undesired materials from the workpiece by a series of rapidly recurring discrete electrical sparks between workpiece and traditional machining processes rely on harder tool or abrasive material to remove softer material whereas nontraditional machining processes such as EDM uses electrical spark or thermal energy to erode unwanted material in order to create desired , the hardness of the material is no longer a dominating factor for EDM removes material by discharging an electrical current, normally stored in a capacitor bank, across a small gap between the tool(cathode)and the workpiece(anode)typically in the order of 50 volts/ shown in , at the beginning of EDM operation, a high voltage is applied across the narrow gap between the electrode and the high voltage induces an electric field in the insulating dielectric that is present in narrow gap between electrode and causes conducting particles suspended in the dielectric to concentrate at the points of strongest electrical the potential difference between the electrode and the workpiece is sufficiently high, the dielectric breaks down and a transient spark discharges through the dielectric fluid, removing small amount of material from the workpiece volume of the material removed per spark discharge is typically in the range of 105 to 106 gap is only a few thousandths of an inch, which is maintained at a constant value by the servomechanism that actuates and controls the tool Machining(CM)Chemical machining(CM)is a well known nontraditional machining process in which metal is removed from a workpiece by immersing it into a chemical process is the oldest of the nontraditional processes and has been used to produce pockets and contours and to remove materials from parts having a high strengthtoweight , the chemical machining method is widely used to produce microponents for various industrial applications such as microelectromechanical systems(MEMS)and semiconductor CM material is removed from selected areas of workpiece by immersing it in a chemical reagents or etchants, such as acids and alkaline is removed by microscopic electrochemical cell action which occurs in corrosion or chemical dissolution of a coatings called maskants protect areas from which the metal is not to be controlled chemical dissolution will simultaneously etch all exposed surfaces even though the penetration rates of the material removed may be only : chemical milling of pockets, contours, overall metal removal, chemical blanking for etching through thin sheets。the three main forms of energy used in nontraditional machining processes are as follows: energy。工具的振幅通常與所使用的磨粒直徑大致相等。成形工具本身并不磨蝕工件，是受激振動(dòng)的工具通過激勵(lì)漿料液流中的磨料不斷緩和而均勻地磨損工件，從而在工件表面留下與工具相對(duì)應(yīng)的精確形狀。激光加工不會(huì)掛渣，沒有毛邊，可以精確控制幾何精度。激光加工中的熱影響區(qū)相對(duì)較窄，其重鑄層只有幾微米。激光加工（）可以實(shí)現(xiàn)局部的非接觸加工，而且對(duì)加工件幾乎沒有作用力。特別是在電化學(xué)加工中，材料去除率與被加工件的硬度、韌性及其他特性無關(guān)。金屬的去除由一個(gè)合適形狀的工具電極來完成，最終加工出來的零件具有給定的形狀、尺寸和表面光潔度。通過改變蝕刻劑和控制工件加工環(huán)境，這種尺寸改變可以減小到最小。而被稱為保護(hù)層的特殊涂層所保護(hù)下的區(qū)域中的材料則不會(huì)被去除。這就會(huì)使懸浮在電介質(zhì)中的導(dǎo)電粒子聚集在電場(chǎng)最強(qiáng)處。常見的特種加工工藝描述如下。傳統(tǒng)加工如車削、鉆削、刨削、銑削和磨削，都難以加工特別硬的或脆性材料。s existing electrical equipment, such as lamps and lanterns, telephone and home appliances to kinds of electrical appliances and other intelligent subsystem can be control in the home, also can fully meet the remote extensibility Smart home system is the system can be extended, initially, your smart home system can only with lighting or the current monly used electrical equipment connection, can connect to other devices in the future, in order to adapt to the new intelligent life when your home is decorated also can be easily upgraded to a smart control of smart home system can not destroy original decoration, as long as the corresponding module can be installed in the place such as some outlet to realize intelligent control, much less damage to the original building main function a remote control You can use the remote control to control the lighting in the home, water heater, electric curtain, water dispensers, air conditioning equipment such as opening and closing。因?yàn)橐曇纛l信息在傳輸?shù)那昂蠖加幸欢ǖ奶幚?如信號(hào)的壓縮和編碼/解壓縮和解碼)，這些處理都有一定的容錯(cuò)能力，而且即使有瞬時(shí)的錯(cuò)誤，也只是影響瞬時(shí)的聲音或圖像的錯(cuò)誤，而對(duì)設(shè)備以后的運(yùn)行幾乎沒有影響。蓋茨在深圳宣布了“維納斯計(jì)劃”。是家庭娛樂的多媒體平臺(tái)，它運(yùn)用先進(jìn)的微電腦技術(shù)、無線遙控技術(shù)和紅外遙控技術(shù)，在程序指令的精確控制下，把機(jī)頂盒、衛(wèi)星接收機(jī)、DVD、電腦等多路信號(hào)源，能夠根據(jù)用戶的需要，發(fā)送到每一個(gè)房間的電視機(jī)、音響等終端設(shè)備上 , 實(shí)現(xiàn)一機(jī)共享客廳的多種視聽設(shè)備?？刂婆P室的柜櫥對(duì)衣物、鞋子、被褥等殺菌、晾曬等。 簡(jiǎn)單安裝智能家居系統(tǒng)可以實(shí)現(xiàn)簡(jiǎn)單地進(jìn)行安裝，而不必破壞隔墻，不必購(gòu)買新的電氣設(shè)備，系統(tǒng)完全可與你家中現(xiàn)有的電氣設(shè)備，如燈具、電話和家電等進(jìn)行連接?；窘榻B智能家居是人們的一種居住環(huán)境，其以住宅為平臺(tái)安裝有智能家居系統(tǒng)，實(shí)現(xiàn)家庭生活更加安全，節(jié)能，智能，便利和舒適。既便您的家居已裝修也可輕松升級(jí)為智能家居。 四 集中控制您可以在進(jìn)門的玄關(guān)處就同時(shí)打開客廳，餐廳和廚房的燈光，廚寶等電器，尤其是在夜晚您可以在臥室控制客廳和衛(wèi)生間的燈光電器，既方便又安全，還可以查詢他們的工作狀態(tài)。 十 背景音樂系統(tǒng)簡(jiǎn)單地說，就在任何一間房子里，包括客廳、臥室、廚房或衛(wèi)生間，均可布上背景音樂線，通過 1 個(gè)或多個(gè)音源，(CD/TV/FM/MP3 音源)可以讓每個(gè)房間都能聽到美妙的背景音樂配合AV影視交換產(chǎn)品，可以用最低的成本，不僅實(shí)現(xiàn)了每個(gè)房間音頻和視頻信號(hào)的共享，而且可以各房間獨(dú)立的遙控選擇背景音樂信號(hào)源，可以遠(yuǎn)程開機(jī)、關(guān)機(jī)、換臺(tái)、快進(jìn)、快退等，是音視頻、背景音樂共享和遠(yuǎn)程控制的最佳的性價(jià)比設(shè)計(jì)方案！ 十一 數(shù)字家庭娛樂系統(tǒng)“數(shù)字娛樂”則是利用書房電腦作為家庭娛樂的播放中心，客廳或主臥大屏幕電視機(jī)上播放和顯示的內(nèi)容來源于互聯(lián)網(wǎng)上海量的音樂資源、影視資源、電視資源、游戲資源、信息資源等等。其產(chǎn)品最大的特點(diǎn)是價(jià)格便宜,易學(xué)易用,可滿足非PC(個(gè)人電腦、微機(jī))用戶使用電腦和上網(wǎng)的需求。目前智能家居的發(fā)展趨勢(shì)是由集中控制到分布控制，與集中式控制相比，分布式控制不僅能減少布線，而且能提高系統(tǒng)的可靠性，當(dāng)某一個(gè)節(jié)點(diǎn)出現(xiàn)故障時(shí)，只需將該節(jié)點(diǎn)從網(wǎng)絡(luò)中拿走，而其它節(jié)點(diǎn)不受影響。(such as bedroom, study room, toilet room optional second plus a sitting room)for you