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工具结构铸铁制的底座1上装有主轴和齿轮传动机构。主轴19、轴承21、27及轴承盖22装在底座1上,用垫圈29、背帽30并紧。棘轮6和齿轮10分别用键固定在轴7的两端。跟齿轮10啮合的小齿轮11和双头蜗杆3都装在轴4上。蜗轮2用键固定在主轴10上,并跟蜗杆3啮合。法兰盘18旋在主轴头上,它上面有压板42,调节螺钉14及支持弹簧41等一套夹紧工件用的装置。梢轴35固定在摆动叉17上,它上面套着活动的棘爪5,用弹簧片34把它
Tool Construction Cast iron base 1 is equipped with a spindle and gear drive. Spindle 19, bearing 21, 27 and bearing cap 22 mounted on the base 1, with gasket 29, the back cap 30 and tight. The ratchet 6 and the gear 10 are keyed to both ends of the shaft 7, respectively. The pinion 11 meshed with the gear 10 and the double-headed worm 3 are mounted on the shaft 4. The worm wheel 2 is keyed to the main shaft 10 and meshes with the worm 3. The flange 18 is screwed onto the spindle head and has a set of means for clamping the workpiece, such as the pressure plate 42, the adjusting screw 14 and the supporting spring 41. Tip shaft 35 is fixed on the swing fork 17, which is covered with a movable pawl 5, with a spring piece 34 it