【正文】 3) Accidental damage must be prevented by protective guards. 。油的粘性也要保護，以免被切削液沖毀。 The adhesive property of oil for use on vertical or inclined slide surface is important。在這種場合，是不可能進入雜物的，例如使用倒 v形的導軌時，那就不可能保存碎屑雜物在導軌上。為了維護導軌處于良好狀態(tài)，必須滿足以下條件： 機械工程專業(yè)英語 課文分析 Lesson 23 Fundamentals of Machine Tools 必須防止外面物質(zhì)，如切屑的進入。 positive location of the slides is thus retained. 課文分析 Lesson 23 Fundamentals of Machine Tools 兩種工藝都可產(chǎn)生微小的表面凹痕，它就成為存油凹坑，相配合的零件就不會處處因“浮起”而發(fā)生完全分離，這樣使拖板確定保持接觸導軌。 Hence in practice slide surfaces are either ground using the edge of a cup wheel, or scraped. 因而在實踐中，拖板滑移表面是用凹面砂輪的刃進行磨削或進行刮研的。用這種方法引入兩表面間的油膜必定是很薄的，目的是避免使拖板“浮起”。這是一種適于運動速度低而不頻繁運動場合的潤滑方法． 機械工程專業(yè)英語 2) Continuously, . by pumping through a metering valve and pipework to the point of application。 and is adjusted by grubscrews secured by lock nuts. 課文分析 Lesson 23 Fundamentals of Machine Tools 這種扁條被叫做“鑲條”。為了便于裝配、保證精度和消除磨損后相對移動構件之間出現(xiàn)的“竄動”，有時在拖板內(nèi)裝入一個扁條。 機械工程專業(yè)英語 The general tolerance for straightness of machine tool slideways is 0~ per 1000mm。導軌的特性如下： 機械工程專業(yè)英語 (a) Accuracy of Movement. Where a slide is to be displaced in a straight line, this line must lie in two mutually perpendicular planes and there must be no slide rotation. 課文分析 Lesson 23 Fundamentals of Machine Tools 運動精確。 機械工程專業(yè)英語 The basic geometric elements of slides are flat, vee, dovetail and cylinder. 課文分析 Lesson 23 Fundamentals of Machine Tools These elements may be used separately or bined in various ways according to the applications. Features of slideways are as follows: 導軌的基本的幾何結構形狀有平導軌、 v型導軌、燕尾導軌和圓柱形導軌。 [sw?:f] n. 細鐵屑 切屑 機械工程專業(yè)英語 The slides and slideways of a machine tool locate and guide members which move relative to each other, usually changing the position of the tool relative to the workpiece. The movement generally takes the form of translation in a straight line, but is sometimes angular rotation, . tilting the wheelhead of a universal threadgrinding machine to an angle corresponding with the helix angle of the workpiece thread. The basic geometric elements of slides are flat, vee, dovetail and cylinder. These elements may be used separately or bined in various ways according to the applications. Features of slideways are as follows: 課文分析 Lesson 23 Fundamentals of Machine Tools 機械工程專業(yè)英語 The slides and slideways of a machine tool locate and guide members which move relative to each other, usually changing the position of the tool relative to the workpiece. 課文分析 Lesson 23 Fundamentals of Machine Tools 機床的拖板箱和導軌是支撐和引導彼此相對運動的零部件，通常是改變刀具和工件的相對位置。 孔徑 片狀斜支撐筋條有較大的抗扭剛度，亦便于排屑。 [’230。ɡ?nl] ,斜線 機械工程專業(yè)英語 The box formation is convenient to produce, apertures in walls permitting the positioning and