外文翻譯--數(shù)控加工工藝

1、<p><b>　　英文原文</b></p><p>　　CNC Machining Process First, our country's history of the development of numerical control system 1. Our country since 1958, by a group of research institute

2、s, colleges and universities and a few started to CNC Machine Tool Plant of the research and development system. At that time, due to the low level of domestic electronic components, such as the department of economic co

3、nstraints, lack of a larger development. 2. In the reform and opening up, China's numerical control technology gradually</p><p>　　1. A reasonable selection cutting for the high-efficiency metal-cutting

4、processing, the processed materials, cutting tools, cutting conditions is the three major elements. These determine the processing time, tool life and processing quality. Cost-effective processing methods must be a reaso

5、nable choice of the cutting conditions. Three elements of cutting conditions: cutting speed, feed rate and cutting depth of the damage directly caused by the tool. With the increase in cutting speed, tool tip</p>

6、<p><b>　　中文譯文</b></p><p>　　數(shù)控加工工藝一，我國(guó)數(shù)控系統(tǒng)的發(fā)展史 1.我國(guó)從1958年起，由一批科研院所，高等學(xué)校和少數(shù)機(jī)床廠起步進(jìn)行數(shù)控系統(tǒng)的研制和開(kāi)發(fā)。由于受到當(dāng)時(shí)國(guó)產(chǎn)電子元器件水平低，部門(mén)經(jīng)濟(jì)等的制約，未能取得較大的發(fā)展。 2.在改革開(kāi)放后，我國(guó)數(shù)控技術(shù)才逐步取得實(shí)質(zhì)性的發(fā)展。經(jīng)過(guò)“六五”(81----85年)的引進(jìn)國(guó)外技術(shù)

7、，“七五”(86------90年)的消化吸收和“八五”(91------95年)國(guó)家組織的科技攻關(guān)，才使得我國(guó)的數(shù)控技術(shù)有了質(zhì)的飛躍，當(dāng)時(shí)通過(guò)國(guó)家攻關(guān)驗(yàn)收和鑒定的產(chǎn)品包括北京珠峰公司的中華I型，華中數(shù)控公司的華中I型和沈陽(yáng)高檔數(shù)控國(guó)家工程研究中心的藍(lán)天I型，以及其他通過(guò)“國(guó)家機(jī)床質(zhì)量監(jiān)督測(cè)試中心”測(cè)試合格的國(guó)產(chǎn)數(shù)控系統(tǒng)如南京四開(kāi)公司的產(chǎn)品。 3.我國(guó)數(shù)控機(jī)床制造業(yè)在80年代曾有過(guò)高速發(fā)展的階段，許多機(jī)床廠從傳統(tǒng)產(chǎn)品實(shí)現(xiàn)向數(shù)控