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US 12,233,499 B2Granted
Damper
AssigneeGKN Aerospace Sweden AB
InventorsChrister Zackrisson, James Gladh, Martin Lundstedt
Life of this patent
Estimating the term…
Abstract
A milling machine includes a spindle which is arranged to receive a tool holder and in use to cause rotation of the tool holder within the spindle. A portion of the spindle housing surrounding the tool holder is provided with at least one pair of opposing damping units.
Claims10
A multi-axis milling machine, comprising:
- a spindle having a spindle housing;
- and
- a damper,
- wherein the spindle is configured to receive a tool holder and to cause rotation of the tool holder within the spindle,
- wherein a portion of the spindle housing surrounding the tool holder is provided with the damper,
- wherein the damper comprises an outer housing enclosing a damping mass, the damping mass being movable within and with respect to the outer housing and spaced from the outer housing by a plurality of elastomeric or rubber elements, and
- wherein the elastomeric or rubber elements are continuous and portions of an inner surface of end faces of the outer housing and/or portions of end faces of the damping mass are provided with recesses in alignment with a line of contact of the elastomeric elements and the end faces.
4 more elements
A damping unit, comprising:
- a damper configured to be coupled to a spindle of a multi-axis machining center or milling machine, the damper further including:
- a damping mass;
- and
- an outer housing enclosing the damping mass,
- wherein the damping mass is movable within and with respect to the outer housing,
- wherein the damping mass is spaced from the outer housing by a plurality of elastomeric or rubber elements, and
- wherein the elastomeric or rubber elements are continuous and portions of an inner surface of end faces of the outer housing and/or portions of end faces of the damping mass are provided with recesses in alignment with a line of contact of the elastomeric elements and the end faces.
4 more elements
A machining center, comprising:
- a spindle having a spindle housing, the spindle configured to receive a tool holder and to cause rotation of the tool holder within the spindle;
- and
- a damper having a damping mass that is disposed within a damper housing and spaced therefrom by a plurality of elastomeric portions,
- wherein the damper is provided on a portion of the spindle housing surrounding the tool holder, and
- wherein each elastomeric portion is in contact with the damping mass on a first side and with the damper housing on an opposing side, and
- wherein portions of the damper housing and/or damping mass are provided with one or more recesses arranged along a line of contact between each elastomeric portion and the damping mass/damper housing so as to prevent contact between each elastomeric portion and the damping mass/damper housing across the one or more recesses.
3 more elements
Dependencies are inferred from the claim text.