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US 2011/0120281 A1Published application
Counter-rotating spindle transmission
AssigneeTRUMPF Werkzeugmaschinen GmbH + Co. KG
InventorFrank Schmauder
Life of this patent
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Abstract
A punch machine that includes a tool bearing configured to move along a lifting axis and to rotate about the lifting axis, first and second motors coupled to the tool bearing, a sensor for detecting rotation of the tool bearing, and a drive controller configured to adjust a rotational speed of either the first motor or the second motor to substantially eliminate rotation of the tool bearing detected by the sensor while the first and second motors are operated in a first manner.
Claims19
A punch machine comprising:
- a tool bearing configured to move along a lifting axis and to rotate about the lifting axis, the tool bearing being configured such that a tool can be connected to the tool bearing in a manner that causes the tool to move along the lifting axis when the tool bearing moves along the lifting axis and to rotate about the lifting axis when the tool bearing rotates about the lifting axis;
- a first motor configured to rotate at a rotational speed in opposite directions of rotation and coupled to the tool bearing;
- a second motor configured to rotate at a rotational speed in opposite directions of rotation and coupled to the tool bearing;
- a sensor for detecting rotation of the tool bearing relative to the lifting axis;
- and
- a drive controller configured to control the first motor and the second motor,
- wherein the punch machine is configured such that rotation of the first and second motors causes axial forces to be simultaneously applied to the tool bearing in a manner causing the tool bearing and tool to move along the lifting axis when the first and second motors are operated in a first manner,
- wherein the punch machine is configured such that rotation of the first and second motors cause rotational forces to be simultaneously applied to the tool bearing about the lifting axis in a manner causing the tool bearing and tool to rotate about the lifting axis when the first and second motors are operated in a second manner, and
- wherein the drive controller is configured to control the rotational speed and/or the direction of rotation of the first and second motors based on the rotation of the tool bearing detected by the sensor.
6 more elements
Dependencies are inferred from the claim text.