车床在大修过程中,都必须重新铲刮小拖板燕尾。由于铲刮后的小拖板侧母线发生偏移变化,小拖板丝杆的中心位置与小拖板下滑座圆柱螺母装配孔就不同心。为保证丝杆与圆柱螺母的同心度要求,确保车床大修后小拖板的正常精度。我厂宋师傅利用一个报废的三爪自动卡盘革新成功加工圆柱螺母专用车具,如图示。 Lathe in the overhaul process, have to re-scraping small pallet dovetail. As a result of scraping the small side of the bus after the offset change, a small carriage screw the center of the position and the small carriage sliding cylinder nut mounting hole is not the same heart. In order to ensure the concentricity between the screw rod and the cylindrical nut, the normal precision of the small carriage after the overhaul of the lathe is ensured. Our factory Song master use a scrapped three-jaw automatic chuck innovation successful processing of cylindrical nut special vehicles, as shown.