2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、a face of it flat or smooth.平面磨床中英文外文翻譯文獻(文檔含英文原文和申文翻譯)Surface grindingSurface grinding is used to produce a smooth finish on flat surfaces . It is a widelyused abrasive machining process in which a spinning wheel cov

2、ered in rough particles (grinding wheel) cuts chips of metallic or non metallic substance from a workpiece , makingSpark out is a term used when precision values are sought and literally means “until thesparks are

3、 out (no more)“. It involves passing the workpiece under the wheel, withoutresetting the depth of cut, more than once and generally multiple times. This ensures that any inconsistencies in the machine or workpiece are el

4、iminated.EquipmentSurface Grinder with electromagnetic chuck , inset shows a Manual magnetic chuckA surface grinder is a machine tool used to provide precision ground surfaces , either to a critical size or for the sur

5、face finish.The typical precision of a surface grinder depends on the type and usage , however +/-0.002 mm (+/- 0.0001“) should be achievable on most surface grinders .The machine consists of a table that traverses bot

6、h longitudinally and across the face of the whee l.The longitudina l feed is usually powered by hydraulics , as may the cross feed,however any mixture of hand, electrical or hydraulic may be used depending on the ult

7、imate usage of the machine (i. e.: production, wor kshop, cost) . The grinding wheel rotates in the spindle head and is also adjustable for height, by any of the methodsdescribed previously. Modern surface grinders

8、are semi-automa ted, depth of cut and spark-out may be preset as to the number of passes and once setup the machiningprocess requires very little operator intervention.Depending on the workpiece material, the work is ge

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