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在设备维修过程中,常碰到一些轴承在箱体内很难拆除。以往我们采用的拉拔头是压缩液性塑料,使薄壁套筒变形来夹紧轴承内孔,进行拆卸轴承,但在实际使用中不大理想。为此,我们利用轴承内孔孔口的倒圆处设计并改进了一种拉拔头,使用效果很好。拉拔头的结构如图所示,由弹性外涨套筒1、开口垫圈2、锁紧螺母3;锥形心轴4和拉拔器5组成。弹性外涨套筒1带有内锥,锥角为29°,头部有一微凸缘(一般凸起0.5～1毫米即可),套筒上开有3～4条缺口槽,套筒材料为T8或T10,头部热处理
In the equipment maintenance process, often encounter some bearings in the box is difficult to remove. In the past we used drawing head is compressed liquid plastic, thin-walled sleeve deformation to clamp the bearing bore, the removal of the bearing, but not ideal in actual use. To this end, we use the bearing bore hole round the design and improvement of a drawing head, the use of good results. Drawing head structure shown in the figure, the elastic rise sleeve 1, the opening washer 2, the lock nut 3; tapered mandrel 4 and Puller 5 composition. Elastic outer sleeve 1 with an inner cone, the cone angle of 29 °, the head has a micro-flange (generally raised 0.5 to 1 mm can be), the sleeve opened with 3 to 4 slots, the sleeve material For T8 or T10, head heat treatment