Method for producing a cylindrical component

Patent metadata

Field	Value
Publication number	US-9821368-B2
Application number	US-201414563300-A
Country	US
Kind code	B2
Filing date	Dec 8, 2014
Priority date	Dec 16, 2013
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

The invention relates to a method for producing a cylindrical component, particularly of turbomachines. In the process, a heated blank is provided. The blank is then formed to create a flat blank ( 2 ). The flat blank ( 2 ) is next bent and/or rolled to form a cylindrical half-shell ( 40 ).

First claim

What is claimed is:

1. A method for producing a cylindrical component for turbomachines, comprising the steps of:
(a) providing a heated blank;
(b) press forming the heated blank to form a flat blank;
(c) bending or rolling the flat blank into a cylindrical half-shell;
(d) forming at least two half-cylindrical-shells with steps (a) through (c); and
(e) configuring and arranging the at least two half-cylindrical-shells formed in step (d) into a housing.

2. The method according to claim 1 , wherein the flat blank is substantially rectangular in shape.

3. The method according to claim 1 , wherein the flat blank has a machining allowance on at least one of its contours.

4. The method according to claim 3 , wherein the machining allowance is between 0 and 10 mm.

5. The method according to claim 1 , wherein at least one rib and/or one eyelet is formed in at least one surface of the blank.

6. The method according to claim 1 , wherein at least one contact surface of each of the half-cylindrical-shells is machined to a final dimension.

7. The method according to claim 1 , wherein the step of press forming is accomplished by drop forging.

8. The method according to claim 1 , wherein the at least two half-cylindrical-shells have identical outer contours after the step of press forming is complete.

9. The method according to claim 8 , further comprising the step of:
(f) providing the housing as a cylindrical component in a turbomachine.

10. The method according to claim 8 , further comprising the step of:
providing the housing as a cylindrical component in a turbomachine.

11. A method for producing a cylindrical component for turbomachines, comprising the steps of:
providing a heated blank;
press forming the heated blank to form a flat blank;
bending or rolling the flat blank into a half-cylindrical-shell;
forming at least two half-cylindrcal-shells; and
configuring and arranging the at least two half-cylindrical-shells into a housing, the at least two cylindrical half-shells having identical outer contours after the step of press forming is complete.

Assignees

• MTU Aero Engines AG

Inventors

• Eibl Helmut

Classifications

• Y10T29/4932

  Turbomachine making · CPC title

• B21D22/26

  for making peculiarly, e.g. irregularly, shaped articles · CPC title

• B21J5/06

  for performing particular operations · CPC title

• B21K1/26 Primary

  housings or supporting parts, e.g. axle housings, engine mountings · CPC title

• F01D25/24 Primary

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title