Tooling for the coating of lips

Patent metadata

Field	Value
Publication number	US-11306385-B2
Application number	US-202016793452-A
Country	US
Kind code	B2
Filing date	Feb 18, 2020
Priority date	Feb 19, 2019
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

Tooling for the coating of lips of a turbomachine rotor sector, comprising a support for a rotor sector, a centering plate adapted to be inserted into a rotor sector, said centering plate having a central housing, a tool, said tool comprising a centering arm, adapted to be inserted into the central housing of the centering plate, a torch, adapted to spray a ceramic material, a machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips.

First claim

The invention claimed is:

1. A tooling for coating lips of a turbomachine rotor sector, comprising a support for a rotor sector, a centering plate adapted to be inserted into a rotor sector, said centering plate having a central housing, a tool, said tool comprising a centering arm, adapted to be inserted into the central housing of the centering plate, a torch, adapted to spray a ceramic material, a machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips;
wherein the centering arm and the centering plate comprise rotating means allowing the relative rotation of the centering arm relative to the centering plate.

2. The tooling according to claim 1 , wherein the torch and the machining tool are positioned on either side of the centering arm.

3. The tooling according to claim 1 , wherein the support is movable in rotation relative to the tool.

4. The tooling according to claim 1 , wherein the machining tool and the torch are each slidably mounted relative to the centering arm.

5. The tooling according to claim 1 , wherein the machining tool has a cutting portion whose shape corresponds to a negative of lips to be machined.

6. A method for forming an abradable coating for lips of a turbomachine rotor sector using the tooling of claim 1 , the method comprising:
providing the turbomachine rotor sector comprising a plurality of lips;
positioning the rotor sector on the support;

securing the centering plate to an open end of the rotor sector, and placing an opposite end of the rotor sector on the support, said centering plate having a central housing, the tool, said tool comprising the centering arm, adapted to be inserted into the central housing of the centering plate, the torch, adapted to spray a ceramic material, the machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips; wherein the centering arm and the centering plate comprise rotating means allowing the relative rotation of the centering arm relative to the centering plate;
positioning the tool relative to the rotor sector, by inserting the centering arm in the central housing of the centering plate, said tool being provided with the torch and the machining tool;
driving the rotor sector in rotation relative to the tool; and
actuating the torch to spray a ceramic material on the lips of the rotor sector, and positioning the machining tool to machine said lips parallel to the spraying of the ceramic material by the torch so that the machining of the lips and the spraying of the ceramic material are performed simultaneously on two distinct sectors of the lips.

7. The method according to claim 6 , further comprising removing the machining tool, and spraying the ceramic material onto the lips.

8. A tooling for coating lips of a turbomachine rotor sector, comprising a support for a rotor sector, a centering plate adapted to be inserted into a rotor sector, said centering plate having a central housing, a tool, said tool comprising a centering arm, adapted to be inserted into the central housing of the centering plate, a torch, adapted to spray a ceramic material, a machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips, wherein the machining tool has a cutting portion whose shape corresponds to a negative of lips to be machined.

Assignees

• Safran Aircraft Engines

Inventors

• Dudon Laurent Paul
• Thiercelin Mickaël

Classifications

• F16J15/445

  with means for adjusting the clearance · CPC title

• B23P23/04 Primary

  for both machining and other metal-working operations · CPC title

• B05B13/0228

  the movement of the objects being rotative (B05B13/0242 takes precedence) · CPC title

• B05B13/02

  Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work (B05B13/06 takes precedence) · CPC title

• F01D5/06

  Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections {(F01D5/022, F01D5/023 take precedence)} · CPC title