Generally, the shaft type workpiece is clamped by the spindle and the tailstock top positioning, and the axial dimension is not easy to control due to the different sizes of the center holes at both ends of the spoke. Therefore, we designed the fixture to overcome the above shortcomings. The clamp mandrel 2 (drawing) is directly placed in the taper hole of the lathe main shaft, the tip 4 is floating, and is freely expandable and contractible in the mandrel, and the spring force of the spring 3 is adjusted by adjusting the position of the screw 1. When the lathe main shaft rotates, the bearing housing 7 and the guide ring 10 do not rotate under the action of the brake lever 8. Replacing the guide ring 10 of different inner diameters can clamp shaft workpieces of different diameters. The workpiece is forced by the tip of the tailstock (not shown) to force the tip to inward.
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