旋转电磁铁多用于电子工业产品分选设备上的自动开门,它的关键零件——定子和转子,是由两个等高等螺距的半螺旋面组成。由于每半圈有一个螺旋面,所以过去不少工厂在车床上加工时,必须由二人操作,一人用手扳动皮带轮,一人负责每半圈的进退刀。在铣床上加工也是手工进退刀。这两种方法精度都不易保证,而且几小时加 Rotary electromagnet used in automatic sorting of equipment for the electronics industry, the key components - the stator and the rotor, is composed of two equal pitch helical surface. Since there is a spiral surface per half turn, in the past many factories in the lathe processing, must be operated by two people, one hand pulling the pulley, one person is responsible for every half turn of the knife. In the milling machine is also a manual advance and retreat knife. The accuracy of these two methods are not easy to guarantee, and a few hours plus