Hub step drill
The utility model belongs to the machining field, and relates to a step drill, in particular to a hub step drill. The utility model discloses the hub step drill which comprises a cutter handle 3. A two-level cutter edge 2 is arranged below the cutter handle 3. A first-level cutter edge 1 is arranged...
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| Hauptverfasser: | , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model belongs to the machining field, and relates to a step drill, in particular to a hub step drill. The utility model discloses the hub step drill which comprises a cutter handle 3. A two-level cutter edge 2 is arranged below the cutter handle 3. A first-level cutter edge 1 is arranged below the two-level edge 2. In the process of machining and producing a hub, the step drill is adopted to remove a dead head, technological requirements are met, secondary machining is avoided, production efficiency is improved, unnecessary dead heads are drilled, the process of heat treatment frame up is convenient, machining allowance is reduced, and efficient production is guaranteed. |
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