High-speed spindle unit for machine tools
AssigneeDeckel Maho Pfronten GmbH
InventorAlfred Geissler
Life of this patent
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Abstract
A high-speed spindle unit for milling and drilling machines. The spindle unit has a spindle housing on the front end portion of which a terminating ring detachably mounted and a rotationally driven tool spindle which is supported in at least a front roller bearing inside the spindle housing, a ring nut being attached to the front end portion of said spindle. Between the terminating ring and the ring nut a pre-dimensioned ring-shaped gap extending in the radial direction is formed, the gap width of the gap being decreasable to zero with increasing axial load acting on the spindle.
Claims11
A high-speed spindle unit for milling and drilling machines, said unit comprising:
- a spindle housing having a front end portion;
- a terminating ring detachably mounted on said front end portion;
- a ring nut fixed on said front end portion;
- a front roller bearing in said housing;
- and
- a rotationally driven tool spindle supported in the spindle housing by at least said front roller bearing;
- the terminating ring and the ring nut being mutually configured and dimensioned to form a pre-dimensioned ring-shaped gap between them, the gap extending in the radial direction, the structure of said spindle unit being configured to permit the width of said gap to decrease with an increasing axial load acting on the spindle.
Dependencies are inferred from the claim text.