【单选题】【消耗次数:1】
影响刀具寿命的根本因素是( )。
刀具材料的性能
切削速度
背吃刀量
工件材料的性能
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相关题目
【单选题】 影响( )生成的主要因素有工件材料的加工性能、切削速度、刀具前角和冷却润滑条件。
①  鳞刺
②  振动
③  积屑瘤
【单选题】 ( )是切削速度、进给量和背吃刀量的总称。
①  切削给量
②  切削总量
③  切削用量
【单选题】 ( )包括切削用量、刀具材料、工件材料、切削液等。
①  切削加工影响表面粗糙的因素
②  影响表面粗糙度的工艺因素
③  磨削加工中影响表面粗糙度的因素
【单选题】 切削用量应根据工件材料、硬度、刀具材料及机床等因素来考虑。该说法( )
①  正确
②  错误
【判断题】 背吃刀量决定刀具所承受的负荷和切屑尺寸大小,该说法( )
①  正确
②  错误
【单选题】 切削不锈钢工件材料时,应采用()硬质合金刀具材料。
①  钨钴类
②  钨钴钛类
③  钨钴钛钽类
④  其它类
【单选题】 切削过程中,刀具施加于工件材料生产变形,并使切削层材料变为切削所需的力,称为( )
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②  切削力
③  AB 都不正确
【单选题】 金属切削时,刀具切入工件,使被加工材料发生变形成为切屑所需的力即为
①  背吃刀量
②  切削速度
③  切削力
【判断题】 钻铰刀具切削速度按钻头直径选择,进给量按铰刀直径选择。()
①  正确
②  错误
【判断题】 钻扩复合刀具的进给量按钻头选择,切削速度按扩孔钻选择。()
①  正确
②  错误
随机题目
【单选题】 The linguists’ main interest had been to____ and describe languages.
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③  command
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【单选题】 We should always keep in mind that ____ decisions often lead to bitter regrets.
①  hasty
②  instant
③  promp
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【单选题】 While being questioned on the court, the man denied ____ the old lady’s necklace.
①  having taken
②  taking
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【单选题】 Someone is coming here. Who_____ it be?
①  will
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【单选题】 She will have to find somewhere else to work, for she can’t ____this loud noise any longer.
①  come up with
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①  innovation
②  selection
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【单选题】 The beach is in an ideal ____ to draw tourists.
①  condition
②  situation
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【单选题】 The back garden of our house contains a lawn, ____ very pleasant to sit on in summer.
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【单选题】 —Can you take the day off tomorrow? —Well, I’ll have to get ____ from my boss.
①  permission
②  permit
③  allowance
④  possession