普通车床和铣削

普通车床和铣削
(一) 普通车床
车床是一种通过旋转工件靠着切削刀具来切削材料的机器装备,待加工零件可以夹持在连接在面板上的顶尖之间或夹持在爪式卡盘或固定在爪盘或筒夹上,虽然这种机器装置适用于加工回转体工件,但它也可以有其他的用途,将工件夹持在面板或卡盘上,可以加工出普通表面,工件一这种方式夹持同样也可以打中心孔,钻孔,镗孔或铰孔,此外,车床也可以加工螺纹车削圆锥,若有合适的装置,它也可以用于简单的铣削和磨削,车床在现代生产中不仅是最重要的,而且是最早使用的机床.(优秀毕业设计:www.2bysj.cn)

Engine Lathe and Milling
(一)Engine Lathe
The lathe is a machine that removes material by rotating the work against a cutter .Parts to be machined can be held between centers,attached to a faceplate,supported in a jaw chuck,or it may also be used for many other purposes.Plain surfaces can be obtained by supporting the work on a faceplate or in a chuck.Work held in this manner can likewise be centered,drilled,bored,or reamed.In addition,the lathe can be used for cutting threads and turning tapers;with the proper attachments,it can be adapted to simple milling or grinding operations.It is probably the oldest of all the machine tools as well as the most important machine in modern production.

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