Turning tool for manufacturing Chinese ball, has drill aligned on screw-in depth or core and on tips to be rotated, round holes designed as passage holes or as holes with thread, and longitudinal holes designed only as passage holes

摘要

The tool has two longitudinal holes (5, 6), four round holes (1-4) and a drill that is aligned on screw-in depth and/or a core and on tips to be rotated. The round holes are designed as passage holes or as holes with thread, and the longitudinal holes are designed only as the passage holes. The longitudinal holes exhibit length of 20 mm and a width of 4.5 mm. The longitudinal holes are designed in round shape at an end with a radius of 2.25 mm. The round holes are arranged between the longitudinal holes in a distance of 7.5 mm to each other.