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车削中等长度以上的多台阶轴类工件时,做一如图所示的回转托架,能给装卸工件和调头工作带来方便。回转托架由上下压板和紧固螺栓(图中未画出)紧固定在床面上。车削时,使滚轮离开工件,调头或装卸工件肘,用手搬动手柄,带动丝杠旋转,使托架上升,直至滚轮与工件接触。这时,可根据需要松开或紧上后顶尖。当工件中心孔与后顶尖中心不等高时,可扳动手柄微稠工件的高度。当需要调头加工工件另一端时,可松开顶尖手扶工件,借助滚轮的滚动和托架的蒋动,使工件轻便而灵巧地在任意方位活
Turning a multi-step shaft with medium length or more makes it possible to load and unload workpieces and turn heads easily, as shown in the figure. Swivel bracket by the upper and lower plate and fastening bolts (not shown) fastened on the bed. Turning, the wheel to leave the workpiece, turn or load and unload work elbows, hand-moving handle, drive screw rotation, the bracket up until the wheel and the workpiece contact. At this time, according to the need to release or close the top of the top. When the workpiece center hole and the top center is not high, you can pull the handle slightly thick workpiece height. When you need to turn the other end of the workpiece, you can release the top hand-held workpieces, with the scroll wheel and the carriage of Jiang move so that the workpiece light and clever in any direction live