论文部分内容阅读
在外围磨床上,常常会碰到内孔与外园要求同心的工件。如果工件的孔比较特殊,并且外园与内孔的同心度达0.01～0.005公厘,就很难保证达到要求了。我车间最近制造一批快换卡头,其中一些零件,如丝锥用钻套(图1)等,它们的孔径都小于8公厘,因为孔径小,不能用磨削的方法来加工,只好在淬火前把孔铰光,淬火后再研磨。但研出的孔与原来的中心孔(或60°
In the peripheral grinder, often encountered in the hole and the park requirements concentric workpieces. If the workpiece hole is rather special, and the outer garden and the inner hole of concentricity of 0.01 to 0.005 mm, it is difficult to ensure that meet the requirements. Recently, a batch of quick-change chuck heads were made in our workshop. Some of the parts, such as tapping sleeves (Figure 1), all have an aperture of less than 8 mm. Because of their small diameter, they can not be machined by grinding Holes before reaming light hinge, and then grinding after quenching. However, the hole with the original center hole (or 60 °