透镜磨边后的倒边,一般常在由机械抽气泵和单轴研磨机组成的专用设备上进行。机械抽气泵上引出一管道,管道中装有一开关空气阀,透镜靠上管道的末端,关闭开关阀与外界空气隔绝。由机械抽气泵的作用,管道内压力低于外部的大气压力,镜片被吸住。然后在凹球模内加砂或在金刚石丸片拼制成的凹球模内倒边。倒好后开启开关,使空气进入管道,透镜即可取下。一般中小光学工厂,生产量不十分大的情况下,不必添一台专用倒边设备,可用如图所 Beveling after the lens edging, usually by the mechanical suction pump and uniaxial grinding machine composed of special equipment. Mechanical suction pump leads to a pipe, the pipeline is equipped with a switch air valve, the lens by the end of the pipe, close the switch valve and the outside world isolated. By the role of mechanical suction pump, the pressure inside the pipe lower than the external atmospheric pressure, the lens is sucked. Then add the sand in the concave ball mold or in the diamond pellet made of concave ball mold inverted bead. Turn on the switch after pouring, so that the air into the pipe, the lens can be removed. General small and medium optical factory, production is not very large, do not have to add a dedicated edge device, available as shown