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US 11,059,139 B2Granted
Drilling-milling device having a device for evening out the torque and the rotational speed of the spindle
AssigneeWTO Vermoegensverwaltung GmbH
InventorsTobias Fautz, Thomas Kreutzer, Karlheinz Jansen
Life of this patent
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Abstract
A drilling-milling device comprising a housing; a drive shaft; a spindle; and a brake. The drive shaft and the spindle being coupled to one another by a gear mechanism, and the brake being coupled to the spindle and a braking torque of the brake being transmitted to the housing.
Claims18
A drilling or milling device, said device comprising:
- a housing;
- a drive shaft;
- a tool spindle;
- and
- a brake including a first plurality of plates and a second plurality of plates;
- wherein
- the drive shaft and the spindle are coupled to one another by means of a gear mechanism,
- the first plurality of plates are connected to the housing, and
- the second plurality of plates are fastened to the spindle, resulting in a retarding force being applied to the spindle, due to the shear stress created by fluid located in gaps between the first plurality of plates and the second plurality of plates, where the shear stress is created due to rotation of the second plurality of plates relative to the first plurality of plates.
6 more elements
Dependencies are inferred from the claim text.