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關(guān)于龍門(mén)加工車(chē)件時(shí)出現錐度的原因

發(fā)布日期:2019-04-08 14:09:39 作者:admin 點(diǎn)擊:1303

1、由于主軸箱溫升過(guò)高,引起機床熱變形。

2、車(chē)床安裝時(shí)使龍門(mén)加工中心床身扭曲,或調整墊鐵松動(dòng),引起車(chē)床的導軌精度發(fā)生變化。

3、床身導軌面嚴重磨損,說(shuō)明三項精度超差:導軌在龍門(mén)加工中心水平面設備內的直線(xiàn)度超差;導軌在垂直設備內的直線(xiàn)度超差。

4、用小滑板車(chē)外圓時(shí)產(chǎn)生錐度,是小滑板的位置不正,即小滑板的刻線(xiàn)滑與中滑板的零件對準。

5、用一夾一頂或兩**安裝工件時(shí),由于后**不在主軸的軸線(xiàn)上,或前、后**不等高及前后偏移。

6、工件安裝時(shí)懸臂較長(cháng),車(chē)削時(shí)因徑向切削力影響使用前端讓開(kāi),產(chǎn)生錐度。

7、用卡盤(pán)安裝工件縱進(jìn)給車(chē)削時(shí),產(chǎn)生錐度主要是由于龍門(mén)加工中心主軸軸心,線(xiàn)在水平面和垂直面上相對溜板移動(dòng)導軌的平行度超差。

8、切削刀不耐磨,中途逐漸磨損,引起工件呈錐形。刀具的影響雖不屬于車(chē)床本身原因,但這個(gè)因素絕不可忽視。


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