FIELD: process engineering.
SUBSTANCE: composite drill tool consists of, at least, body and drilling head attached thereto. To add to accuracy of rotation drill tool incorporates support element arranged between said body and drilling hear to make sliding section made up of annular section extending beyond body side surface and drilling head.
EFFECT: higher accuracy of rotation.
10 cl, 11 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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RU2644470C2 |
