【正文】
它還通過PLC將主軸的各種現實工作狀態(tài)通告CNC用以完成對主軸的各項功能控制?! 〔煌瑥S商的PLC有不同的PLC語言和不同的語言表達形式,因此,力求熟悉某一機床PLC程序的前提是先熟悉該機床的PLC語言?! ‘敶鶳LC多集成于數控系統(tǒng)中,這主要是指控制軟件的集成化,而PLC硬件則在規(guī)模較大的系統(tǒng)中往往采取分布式結構?! ?3)可編程邏輯控制器是機床各項功能的邏輯控制中心。 (2)數控系統(tǒng)數控機床的中樞,它將接到的全部功能指令進行解碼、運算,然后有序地發(fā)出各種需要的運動指令和各種機床功能的控制指令,直至運動和功能結束。s information state Jinxing all addresses realtime monitoring interface to the signal according to the present State to analyze and judge, to provide further control mands, plete control of movement or function. Different manufacturers have different PLC PLC language and expressions in different languages, therefore, sought to know the premise of a machine PLC program is to first know the PLC machine language. (4) spindle drive system accepts mands from the CNC driven by the speed and torque (power) control the output drive signals to drive the main motor rotation, while receiving feedback on the implementation rate of speed control. It is also the main axis through the PLC will notice a variety of real working conditions for the pletion of spindle CNC various functions of control. 數控技術(1)數據輸入裝置將指令信息和各種應用數據輸入數控系統(tǒng)的必要裝置。參考文獻1 蔡光起,馮寶富,[J].世界制造技術與裝備市場,2003.2 [D].沈陽:東北大學,2004.3 [J].現代零部件,2005.4 :[博士學位論文].哈爾濱:哈爾濱工業(yè)大學,1994.5 ,19946 曹躍忠,19987 :[博士學位論文].哈爾濱:哈爾濱工業(yè)大學,1999.8 :[碩士學位論文].哈爾濱:哈爾濱工程大學,2000.CNC Technology(1) data input device to mand the various applications of information and the necessary data input device CNC system. It can be perforated with a reader (seldom used), floppy disk drive, CNC keyboard (usually input operation), and numerical control system with hard disk drives (for large amounts of data storage protection), tape drives (less use), PC puters, etc.. (2) the center of NC machine tool numerical control system, it will receive the full functionality of instruction decode, operation, and orderly movement needs to issue instructions and directives to control various machine functions until the end of movement and function. CNC systems have very sound of the selfdiagnostic capabilities, make wider Di yes everyday use strict to follow them to pay attention to, Er routine of Wei Hu Ze yes right hardware to use environmental protection and the damage Fangzhijitong software. (3) programmable logic controller is the function of machine logic control center. It will e from a variety of sports and functions of CNC mands logical order, so that they can accurately coordinated and orderly safe operation。凸、凹模是沖裁模的關鍵零件,其加工時的變形問題不僅影響到制件質量,還會大大降低模具壽命。該系統(tǒng)投資成本低,可以根據工廠規(guī)模的大小選用一臺或多臺計算機,且可以較方便地增加機床,擴展系統(tǒng)。結束語通過這種局域網系統(tǒng)可以實現CAD/CAM一體化的簡單集成,將先進的設計技術直接應用于現有線切割加工機床加工實踐。要承認差距、正視差距。鑒于國內長期發(fā)展高速走絲線切割機床,低速走絲的加工技術與國際先進水平相差甚大。數控線切割加工機床可利用多軸聯動很方便地實現傳統(tǒng)線切割機床難以加工的復雜型腔模具或微小零件的加工,如三維螺旋面、微細齒輪和微細齒條等。,模具工業(yè)和計算機技術的發(fā)展,促進了多軸聯動線切割加工技術的進步。在精加工中很容易發(fā)現因這個原因造成的不穩(wěn)定加工的現象,不穩(wěn)定放電使尺寸不能準確地得到控制且粗糙度值不均勻。加工中采用搖動的方法可獲得側面與底面更均勻的表面粗糙度,更容易控制加工尺寸。,在不同方向上的加工難度和加工面積相差很大,會產生加工不穩(wěn)定、放電間隙不均勻等現象?;旆鄯椒庸ょR面主要技術要求有:線切割機床具有鏡面精加工電路(具有極小的單個脈沖能量);選擇合適的粉末添加劑;進行粉末添加劑的濃度管理;利用擴散裝置來消除濃度的誤差;采用無沖液處理方式。該方法主要應用于復雜模具型腔,尤其是不便于進行拋光作業(yè)的復雜曲面的精密加工。標準化夾具,是一種快速精密定位的工藝方法,它的使用大大減少了數控線切割加工過程中的裝夾定位時間,有效地提升了企業(yè)的競爭力。工藝定位基準附件都統(tǒng)一同心、同位,并且各數控機床都有坐標原點,因此電極在制造完成后,直接取下電極和夾具的組件,裝入數控線切割機床的基準附件上,無需再進行糾正調節(jié)。,要采用快速裝夾的標準化夾具。目前已經開發(fā)出了多種線切割加工工藝,并在生產中取得了一定的經濟效益。一般情況下,合理的切割路線應將工件與其夾持部位分離的切割段安排在總的切割程序末端。由于坯料左右兩側的連接材料很快被割斷,右側工件剛性很差,難以抵抗應力而變形。切割路線應有利于保證工件在切割過程中的剛度并避開應力變形影響,如圖5所示。對于凸模還應留出足夠的夾持余量,一般留出5 8mm即可。采用多穿絲孔加工可解決變形問題,在凸模O, OZ, 03三點處打穿絲孔,并