Machine tool for the robot-supported machining of workpieces with two rotatable tools
View Patent ↗Various embodiments relate to a machine tool, in particular for the robot-assisted machining of workpieces. The machine tool comprises a drive and a first shaft with a mounting point for a first tool and a second shaft with a mounting point for a second tool. The drive is coupled to the first shaft directly or indirectly via a first freewheel coupling and to the second shaft directly or indirectly via a second freewheel coupling such that the drive drives the first or second shaft on the basis of the rotational direction. The invention additionally relates to a corresponding method for the robot-assisted machining of a workpiece using machine tool.
1 . A machine tool for machining on a workpiece, the machine tool comprising:
a support;
a first shaft mounted on the support and comprising a holder for a first tool;
a second shaft mounted on the support and comprising a holder for a second tool;
a first element asymmetrically protruding from the second shaft; and
a second element which is unmovable with respect to the support and which is configured to hold the first element and the second shaft in a reference position when the second shaft is not being actively driven; and
a first drive shaft directly or indirectly mechanically coupled to the first shaft by a first freewheeling clutch and directly or indirectly mechanically coupled to the second shaft by a second freewheeling clutch,
wherein the first shaft and the second shaft are located coaxially to the first drive shaft.
2 . The machine tool of claim 1 , wherein the first freewheeling clutch and the second freewheeling clutch are constructed such that the first shaft is driven when the first drive shaft rotates in a first direction, and the second shaft is driven when the first drive shaft rotates in a second direction.
3 . The machine tool of claim 1 , further comprising:
a motor directly or indirectly coupled to the first drive shaft and configured to drive the first drive shaft.
4 . The machine tool of claim 1 , further comprising:
a motor connected to a second drive shaft; and
at least one belt which couples the second drive shaft and the first drive shaft.
5 . The machine tool of claim 4 , wherein the second drive shaft is a telescopic shaft.
6 . The machine tool of claim 1 , further comprising:
an actuator coupled to the holder of the first shaft or the second shaft and configured to exert a force onto the holder.
7 . The machine tool of claim 1 , wherein the first element is ferromagnetic and the second element is a magnet.
8 . The machine tool of claim 1 , wherein the first element is a magnet and the second element is ferromagnetic.
9 . The machine tool of claim 1 , wherein the holder for the first tool at the first shaft and the holder for the second tool at the second shaft are located on two opposite sides of the machine tool.