外文翻譯---現(xiàn)代計(jì)算機(jī)輔助零件編程

1、<p><b>　　相關(guān)專(zhuān)業(yè)英文翻譯</b></p><p>　　Modern Computer-Aided Part Programming</p><p>　　Modern development in the process of CNC programming</p><p>　　In the past, programmin

2、g was performed manually. The program was written in word address and was tailored to run on a particular controller. Trigonometry was a must for determining tool paths. The CNC machine needed to be halted while the oper

3、ator keyed the program into the machine control unit. The CNC machine was further tied up for program verification, which involved machining a test part and inspecting the results.</p><p>　　The digital compu

4、ter, however, has change the way programs are written, checked, and run. Some of the most dramatic improvements provided by the computer include off-line programming, the use of computer-aided programming language, and t

5、he application of CAD/CAM to programming.</p><p>　　CNC machines operate at optimization when turning part programs and machining parts. This goal is achieved when new programs are written and tested at an of

6、f-line computer terminal. The program can be composed directly in word address (G codes and M codes) with the aid of text editing software. It can be tested and then stored on punched tapes, diskettes, Zip diskettes, or

7、CD-ROM media. If the remote computer has a communication line to the CNC machine, the program can be downloaded directly to </p><p>　　An Introduction to Computer-Aided Programming Language</p><p&g

8、t;　　The controller of a CNC machine can only operate on word address (G codes and M codes). Furthermore, these codes must be entered according to a specific format acceptable to the particular controller. </p><

9、;p>　　A computer-aided programming language is meant to address some of these problems. A computer-aided programming language allows the programmer to unite the program using English-like command, not G and M codes. Be

10、cause the tool path is described in terms of these commands, trigonometric computations are not needed. All tool parameters such as tool diameter, tool speeds, and feeds are easily specific. Furthermore, the programmer n

11、eedn’t be concerned with tailoring the program to a particular contr</p><p>　　The most popular computer-aided programming language still in use is APT. APT is short for Automatically Programmed Tools. It was

12、 the first and still is the most powerful computer programming language. APT can be used to program the machining of complex surfaces on four-axis and five-axis machine centers. It was originally restricted to run on lar

13、ge mainframe computers. Advances in microprocessor technology have allowed it to be available on workstations and personal computers.</p><p>　　Introduction to CAD/CAM Technology</p><p>　　CAD/CAM

14、 stands for Computer-Aided Design and Computer-Aided Manufacturing. Experienced programmers use this powerful tool to simplify the task of writing and testing part programs. In the right hand, CAD/CAM can dramatically bo

15、ost the productivity of CNC shops. The CAD/CAM approach is superior to the technique of using a computer-aided programming language to program part programs. Some of the advantages of using CAD/CAM are:</p><p&

16、gt;　?、?The system can be used for off-line checking of the program. Resulting tool paths can be graphically displayed on the computer screen. The user can zoom in and view the tool paths at various orientations. The syst

17、em can generate real time material removal displays and flag tool breakthrough or part violation problem:</p><p>　?、?Time and cost of machining the part can be quickly determined</p><p>　?、?The

18、system can determine optimum tooling speeds and feeds for the material selected.</p><p><b>　　譯文：</b></p><p>　　現(xiàn)代計(jì)算機(jī)輔助零件編程</p><p>　　CNC編程過(guò)程中的新發(fā)展</p><p>　　過(guò)去，

19、編程都是手工進(jìn)行的。程序由一個(gè)個(gè)字地址寫(xiě)成，這些程序往往是為了在某特定控制器上運(yùn)行而編寫(xiě)。確定刀具軌跡時(shí)必須用到三角計(jì)算。當(dāng)操作者向機(jī)床控制單元輸入程序的時(shí)候，CNC機(jī)床需要停止。</p><p>　　然而，數(shù)字計(jì)算機(jī)改變了程序編寫(xiě)、檢測(cè)和運(yùn)行的方式。計(jì)算機(jī)提供的最顯著的提高包括離線(xiàn)編程，計(jì)算機(jī)輔助編程語(yǔ)言的應(yīng)用以及CAD/CAM在編程中的應(yīng)用。</p><p>　　運(yùn)行工件程序和加工工件

20、時(shí)，CNC機(jī)床應(yīng)工作在最佳狀態(tài)。當(dāng)新程序在離線(xiàn)的終端機(jī)上寫(xiě)好并通過(guò)檢測(cè)的時(shí)候，這個(gè)目標(biāo)就實(shí)現(xiàn)了。這個(gè)程序在文件編輯軟件的幫助下，能直接由字地址（G代碼和M代碼）組成。程序通過(guò)檢測(cè)后就可以?xún)?chǔ)存在穿孔紙帶上、磁盤(pán)上、ZIP磁盤(pán)上或者CD-ROM上。如果遠(yuǎn)程計(jì)算機(jī)與CNC機(jī)床之間有傳輸線(xiàn)的話(huà)，這個(gè)程序就可以直接被下載到機(jī)床的控制單元。這個(gè)技術(shù)就是公認(rèn)的離線(xiàn)編程。</p><p>　　計(jì)算機(jī)輔助編程語(yǔ)言簡(jiǎn)介</p&

21、gt;<p>　　CNC機(jī)床的控制單元只能在字地址（G代碼和M代碼）上運(yùn)行。此外，這些代碼必須以可接受的特定格式輸入至特定的控制器。</p><p>　　計(jì)算機(jī)輔助編程語(yǔ)言就是著手解決其中的一些問(wèn)題。計(jì)算機(jī)輔助編程語(yǔ)言允許編程者用類(lèi)似于英文字母的命令，而不是G代碼和M代碼。因?yàn)榈毒叩能壽E是以這樣的命令描寫(xiě)的，三角計(jì)算法就不需要了。所用的刀具參數(shù)如刀具半徑、切削速度和進(jìn)給量都比較容易確定。此外，編程人

22、員就不必為了使程序滿(mǎn)足某個(gè)特定控制器的要求而調(diào)整程序了。一種名為后信息處理機(jī)的程序可以自動(dòng)將用計(jì)算機(jī)輔助編程語(yǔ)言編寫(xiě)的程序轉(zhuǎn)換成相應(yīng)的字地址程序。每一臺(tái)機(jī)床控制器都有一個(gè)寫(xiě)好的特殊后信息處理機(jī)。這就允許一個(gè)單一的計(jì)算機(jī)輔助編程語(yǔ)言可以用于許多不同類(lèi)型的機(jī)床控制器。</p><p>　　現(xiàn)在最常用的計(jì)算機(jī)輔助變成語(yǔ)言仍舊是APT。APT是Automatically Programmed Tool(自動(dòng)編程工具)的縮

23、略。它是最早出現(xiàn)也是至今最有用的計(jì)算機(jī)輔助編程語(yǔ)言。APT能夠用于在四軸或五軸加工中心上加工復(fù)雜表面時(shí)編程。它原來(lái)只限制在主機(jī)上運(yùn)行。先進(jìn)的微處理技術(shù)已經(jīng)允許它在工作站或個(gè)人計(jì)算機(jī)上使用。</p><p>　　CAD/CAM技術(shù)簡(jiǎn)介</p><p>　　CAD/CAM代表Computer-Aided Design（計(jì)算機(jī)輔助設(shè)計(jì)）和Computer-Aided Manufacturing(

24、計(jì)算機(jī)輔助制造)。有經(jīng)驗(yàn)的編程人員能使用這個(gè)有效的工具來(lái)簡(jiǎn)化編寫(xiě)和檢測(cè)零件程序的任務(wù)。另外，CAD/CAM能顯著提高CNC工廠的生產(chǎn)率。CAD/CAM技術(shù)在準(zhǔn)備零件編程時(shí)比計(jì)算機(jī)輔助編程語(yǔ)言要優(yōu)越的多。使用CAD/CAM的一些優(yōu)點(diǎn)如下：</p><p>　　①系統(tǒng)可以用來(lái)離線(xiàn)檢查程序。刀具的軌跡能以圖示的方式顯示在計(jì)算機(jī)屏幕上。使用者可以從不同的方向來(lái)放大和觀察刀具的軌跡。系統(tǒng)能實(shí)時(shí)顯示材料切除的情況，并標(biāo)記刀具