【正文】
ctly from the CAD/CAM software developed( an enhanced CATIA system) and no prototypes or mockups were built , such as were required for previous models. CAD/CAM 的出現(xiàn)對制造業(yè)產(chǎn)生了重大影響,通過產(chǎn)品開發(fā)的標(biāo)準(zhǔn)化和減少設(shè)計(jì)工作量,試用,和原型的工作;它有可能大大降低成本和提高生產(chǎn)力。刀具路徑可以隨時修改,以適應(yīng)其他部分的形狀被加工。利用這些信息,設(shè)計(jì)師可以分析備選設(shè)計(jì)的經(jīng)濟(jì)性。它可以從圖形庫中恢復(fù),可以被復(fù)制,拉伸,改變大小,和其他許多方面的改變而無需重新繪制。計(jì)算機(jī)輔助設(shè)計(jì)系統(tǒng)是功能強(qiáng)大的工具,被用于在機(jī)械設(shè)計(jì)以及產(chǎn)品和零件的幾何建模。因而設(shè)計(jì)者可以提供多種工程分析并且可以識別潛在的問題(如過負(fù)荷或變形)。它使機(jī)械工程師有能力放大甚至最小的部件來確定構(gòu)件是否裝配合適。 This bination allow the transfer of information from the design stage into the stage of planning for the manufacture of a product,without the need to reenter the data on part geometry manually. The database developed during CAD is stored; then it is processed further,by CAM, into the necessary data and instructions for operating and controlling production machinery, materialhandling equipment, and automated testing and inspection for product quality. 這種組合允許一個產(chǎn)品的信息從設(shè)計(jì)階段傳遞到加工規(guī)劃階段,而不需要手動重新輸入幾何部件的數(shù)據(jù)。例如雙引擎的波音 777 客機(jī)就是由計(jì)算機(jī)設(shè)計(jì)完成(無紙化設(shè)計(jì))。工程師或技術(shù)員可以顯示和檢查刀具路徑可能與夾具或其他干擾工具碰撞。 In addition to the design’s geometric and dimensional features,other information ( such as a list of materials, specification , and manufacturing instructions) is stored in the CAD database. Using such