| 摘要 |
The fastening shell has a teeth structure arranged in an external side of a semi shell, and a milling tool for forming a shape of teeth flanks (21). The equator-side oriented flanks of the individual teeth form an angle of less than 90 degrees with a component axis such that barbed hook effect is developed in an equator. A path of the tool is curved for forming teeth gaps and formed such that the teeth of a teeth row are consecutively arranged in the teeth gaps and cutting edges of the teeth from the equator towards a pole do not overlap or have a gap of around 2mm. |
