Patent ID: 8383979
Filing Date: 2013-02-26
Classification: B23K,B23P,B23Q,B25B,Y10T

Abstract:
1. A part-holding device in a method for repairing a blade of a monobloc bladed disc in a turbo-machine, through electron-beam welding of a patch onto the blade along a junction plane, the device comprising: a disc supporting device which supports the disc; and an adjustable holding device which holds both the blade and the patch horizontally, the adjustable holding device comprising a platen which supports the adjustable holding device arranged so that a space located above the junction plane allows for an electron beam to pass, wherein the platen includes a supporting plane which supports the adjustable holding device, wherein the adjustable holding device includes a blade pinching device which pinches the blade, a patch adjusting device which adjusts height and slope of the patch, a patch abutting device which abuts the patch against the blade, and a patch latching device which latches the patch in height, wherein the blade pinching device includes first and second blade supporting screws and first and second pegs, the first and second blade supporting screws are provided on the supporting plane and abut under the blade, and the first and second pegs press against the blade from above and are disposed on a pivoting arm connected to the platen, wherein the patch adjusting device includes first, second and third plots provided on the supporting plane which hold the patch from below and adjust the height and slope of the patch, the first, second and third plots are distributed as a triangle so as to support the patch in a vicinity of each corner thereof, the first, second and third plots are adjustable in height, wherein the patch adjusting device includes fourth and fifth plots which are rotationally mounted on the supporting plane and abut edges of the patch that do not form the junction plane such that the patch is pushed towards the blade and is maintained in contact with the blade, the fourth and fifth plots each includes an off-axis bore through which a fixed stem integral with the supporting plane is inserted, and wherein the patch latching device includes a latching screw which abuts the patch from above, the latching screw is supported by a rotating arm disposed on the supporting plane.