过去,在钻铰大孔时,为了省力,常用一根杠杆在手柄上强行旋转,这样常常把尾座套筒内的螺母损坏。现在经过技术改革,在C620、C630车床上设计制作了液压、手动两用尾座。这种尾座在很多情况下,满足了机动和手动操作,保证了产品质量,提高了工作效率,并大大地减轻了劳动强度。C620、C630车床是厂矿中常见的机床,它的尾座后端盖是用三个螺钉 In the past, when drilling a large hole, in order to save effort, a lever was often used to force a rotation on the handle, so that the nut in the tailstock was often damaged. Now through technical reform, designed in the C620, C630 lathe hydraulic, manual dual-purpose tailstock. This tailstock in many cases, to meet the maneuver and manual operation, to ensure product quality, improve work efficiency, and greatly reduce labor intensity. C620, C630 lathe is a common machine tool factory, and its tailstock tailstock is to use three screws