直线导轨摩擦系数_研磨齿条中的研磨方式

 荣誉资质     |      2019-07-16 16:16

     研磨齿条中的研磨指的是齿条齿面的一种光洁度加工。加工今后精度可达欧标6级精度,外表粗糙度可达1.6。

    研磨齿条齿面研磨时,在研具和工件外表存在涣散的细粒度砂粒(磨料和研磨剂)在两者之间施加一定的压力,并使其发生杂乱的相对运动,这样通过砂粒的磨削和研磨剂的化学、物理效果,在齿面外表上去掉极薄的一层,取得很高的精度和较小的外表粗糙度。

    研磨的办法按研磨剂的运用条件分以下三类:

    1.干研磨  研磨时只需在研具上涂以少量的光滑附加剂。砂粒在研磨过程中基本固定在研具上,它的磨削效果以滑动磨削为主。这种办法生产率不高,但可到达很高的齿面精度和较小的外表粗糙度。

    2.湿研磨  在研磨过程中将研磨剂涂在研具上,用涣散的砂粒进行研磨。研磨剂中除砂粒外还有煤油、机油、油酸、硬脂酸等物质。在研磨过程中,部分砂粒存在于研具与工件之间,如图8-12b所示。此刻砂粒以翻滚磨削为主,生产率高,粗糙度高,作为一般的粗加工运用,但加工外表一般无光泽。

    3.软磨粒研磨

    在研磨过程中,用氧化铬作磨料的研磨剂涂在研具的作业外表,由于磨料比研具和工件软,因此研磨过程中磨料悬浮于工件与研具之间,首要使用研磨剂与工件外表的化学效果,发生很软的一层氧化膜,凸点处的薄膜很简单被磨料磨去。此种办法能得到极细的外表粗糙度。

 

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