TOOL AND METHOD FOR SHAPING A HOLLOW CONDUCTOR BAR

1 . A tool for shaping a conductor bar for an electric machine, with a hammer or a movable wheel supported by arms, the hammer or the movable wheel are suitable for engaging and exerting force to the conductor bar to modify the height h and/or the surface structure of the conductor bar, whereas the hammer is adapted to conduct a bidirectional movement in the axial direction of the tool, whereas the wheel is adapted to conduct a bidirectional movement in the axial direction of the tool and/or a rotating movement, whereas the tool applies heat to the conductor bar by friction of the hammer or the movable wheel.

2 . The tool according to claim 1 , wherein the tool with the hammer or the wheel is movable in a direction along the conductor bar and in a direction perpendicular to the conductor bar along the axis of the wheel.

3 . The tool according to claim 1 , wherein a heat source produces and applies additional heat to the conductor bar in the range from 250° C. to 900° C., preferably approximately 500° C.

4 . The tool according to claim 3 , wherein the tool comprises a heat source operated by high frequency induction, high current resistive, or a flame.

5 . The tool according to claim 1 , wherein the hammer or the movable wheel oscillate in the axial direction of the tool creating a hammering effect to the conductor bar due to the oscillation.

6 . The tool according to claim 1 , wherein the tool is part of a robotized automation system.

7 . The tool according to claim 1 , wherein the tool is a handheld tool to be operated by an operator.

8 . The tool according to claim 1 , wherein the tool comprises a counterpart to create a counterforce to the conductor bar at the opposite side of the movable wheel.

9 . The tool according to claim 8 , wherein the counterpart is a second movable wheel.

10 . The tool according to claim 1 , wherein the surface of the hammer comprises rills or templates to be imprinted into the conductor bar.

11 . The tool according to claim 10 , wherein the rills in the surface structure of the hammer imprint rills into the conductor bar suitable to engage to spacers placed longitudinal between two conductor bars.

12 . Method for shaping a conductor bar for an electric machine, the method comprising placing a conductor bar between supports, engaging at least one side of the conductor bar with a moving hammer or moving wheel, and shaping the conductor bar by means of the force applied by the moving hammer or moving wheel.

13 . Method for shaping a conductor bar for an electric machine according to claim 12 , wherein the shaping of the conductor bar is supported by heat generated by friction of the hammer or the movable wheel.

14 . Method for shaping a conductor bar for an electric machine according to claim 12 , wherein the conductor bar is fixed and the moving hammer or moving wheel is connected to and moved by a robot arm of a robot device along the conductor bar.

15 . Method for shaping a conductor bar for an electric machine according to claim 12 , wherein placing a counterpart at the opposite side of the conductor bar to apply a counterforce to the force applied by the moving hammer or moving wheel.

16 . Method for shaping a conductor bar for an electric machine according to claim 13 , wherein shaping the opposite side of the conductor bar with a second moving wheel at the same time.

17 . Use of a tool according to claim 1 for shaping a conductor bar for an electric machine.