英语翻译不要机翻 我自己会查Chapter5 Machine ToolsText:The oldest and most

英语翻译
不要机翻 我自己会查
Chapter5 Machine Tools
Text:
The oldest and most common machine tool is the lathe,which removes material by rotating the workpiece against a single-point cutter.Lathes used in manufacturing can be classified as speed lathes,engine lathes,toolroom lathes,turret,automatic lathes,tracer lathes and numerical control turning centers.
Engine lathe.The engine lathe is so named because it was originally powered by the steam “engine” if the eighteenth and nineteenth century where the lathe is connected to pulley power from overhead line shafts or connected directly to the steam engine.Today lathes are equipped with electric motors.Although simple and versatile,an engine lathe requires a skilled machinist because all controls are manipulated by hand.Consequently,it is inefficient for repetitive operations and for large production runs.
“the essential components of an engine lathe(figure 5-1-1) are the bed,headstock assembly,tailstock assembly,carriage assembly,quick-change gearbox,and the lead screw and feed rod.The bed supports all the major components of the lathe.Beds have a large mass and are rigidly built,usually from grey or nodular cast iron.The top portion of the bed has two ways,with various cross-sections,that are surface-hardened and precision-machined for wear resistance and dimensional accuracy during use.

The oldest and most common machine tool is the lathe, which removes material by rotating the workpiece against a single-point cutter. Lathes used in manufacturing can be classified as speed lathes, engine lathes, toolroom lathes, turret, automatic lathes, tracer lathes and numerical control turning centers.
古老和最常见的机床是车床,它将删除由旋转工件材料对单点刀.车床用于生产可分为速度车床、蒸汽机车床、炮筒镗床、六角车床工具室、自动车床、示踪车床和数控车削中心.

Engine lathe. The engine lathe is so named because it was originally powered by the steam “engine” if the eighteenth and nineteenth century where the lathe is connected to pulley power from overhead line shafts or connected directly to the steam engine. Today lathes are equipped with electric motors. Although simple and versatile, an engine lathe requires a skilled machinist because all controls are manipulated by hand. Consequently, it is inefficient for repetitive operations and for large production runs.
普通车床.蒸汽机车床之所以这样命名是因为它最初是由蒸汽驱动的引擎,十八和十九世纪的
车床与皮带轮的动力由架空管道竖井连接或直接连接到蒸汽引擎提供.而如今的车床配备的则是电动机作为原动机.车床的操作虽然简单而且通用性强,因为所有的控件都是手工操作,所以一个引擎车床必须配备一个熟练的机械师来操作它.因此它适合低效的重复和大批量生产.

“the essential components of an engine lathe(figure 5-1-1) are the bed, headstock assembly, tailstock assembly, carriage assembly, quick-change gearbox, and the lead screw and feed rod. The bed supports all the major components of the lathe. Beds have a large mass and are rigidly built, usually from grey or nodular cast iron. The top portion of the bed has two ways, with various cross-sections, that are surface-hardened and precision-machined for wear resistance and dimensional accuracy during use.
蒸汽机车床的重要组成部分（5-1-1）为床身、床头组件、尾架组件、箱体组件、能够快速换挡的变速箱、丝杠和进给轴.床支持所有车床的主要部件,床身质量大,刚性强,通常由灰口铸铁或球墨铸铁制成.在床的顶部部分有两个滑轨,表面分别经过各种硬化处理,确保了使用过程中的耐磨损性和精密加工过程中的尺寸精度.

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