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在生产过程中,精加工外圆、端面及台阶孔时,经常需要以内孔定位。为此,我设计了一种工件靠自锁力夹紧,且快速装卸的心轴(见图)。心轴1的直径D与工件内孔的尺寸一致,其公差根据工件的精度要求制定,若工件被加工表面与内孔的位置精度高,则心轴与工件内孔的配合间隙应小些;反之,则可适当大些,以便装卸工件。长度L根据工
In the production process, finishing cylindrical, face and step holes, often need to locate the hole. To this end, I designed a workpiece by self-locking clamping force, and quick loading and unloading of the mandrel (see photo). The diameter D of the mandrel 1 is consistent with the size of the hole in the workpiece. The tolerance of the mandrel 1 is determined according to the accuracy requirement of the workpiece. If the position of the workpiece to be machined and the position of the inner hole is high, the clearance between the mandrel and the inner hole of the workpiece should be smaller; On the contrary, it may be appropriate larger, in order to load and unload the workpiece. Length L according to work