NC machine tools

Japanese: NC 工作機械 - えぬしーこうさくきかい
NC machine tools

…Numerical control technology, which emerged in the 1950s to precisely machine complex aircraft parts, enabled unmanned operation of machine tools that had previously been operated by humans, and had a major impact on machine tool technology. Developed in the United States, this technology numerically encodes the information about the machine's movements required to machine parts, allowing automatic operation. Machine tools that use numerical control are called numerically controlled machine tools, or NC machine tools (NC stands for numerical control). This technology was later introduced to Japan, where it made great strides in terms of labor-saving in the machining of parts with simple shapes, and became the driving force behind the promotion of unmanned factories. …

From [Numerical Control]

…Aircraft body components require strength and light weight, so complex cutting processes are used to remove unnecessary material, but to avoid mistakes along the way, precise and reliable processing methods are required. NC machine tools were developed to meet these demands, and were made possible only by the organic combination of digital circuit technology and servo technology. Conventional machine tools were operated by hand to process each part one by one. …

*Some of the terminology that refers to "NC machine tools" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…航空機の複雑な部品を精度よく加工するために,1950年代になって登場した数値制御技術は,それまで人間が操作することを前提としていた工作機械の無人運転を可能にし,工作機械技術に大きな影響を及ぼした。アメリカで開発されたこの数値制御技術は,部品を加工するのに必要な機械の運動に関する情報を数値符号化して自動運転を行わせるもので,数値制御を利用した工作機械を数値制御工作機械,あるいはNC工作機械(NCはnumerical controlの略)と呼ぶ。この技術はその後日本に導入され,簡単な形状の部品加工における省力化の面で大きな発展を遂げ,工場無人化を推進する原動力となっている。…

【数値制御】より

…航空機の機体部材は強度と軽量を必要とするので,むだな肉を削る複雑な切削加工が行われているが,途中のミスを避けるには,精度,信頼性のある加工手段が要求される。これらの要求にこたえて開発されたのがNC工作機械で,ディジタル回路技術とサーボ技術の有機的結合によってはじめて可能になった。 従来の工作機械では人間が手で操作して一つずつ加工していた。…

※「NC 工作機械」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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