US2944326A - Method of staking blades - Google Patents

Method of staking blades Download PDF

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Publication number
US2944326A
US2944326A US512702A US51270255A US2944326A US 2944326 A US2944326 A US 2944326A US 512702 A US512702 A US 512702A US 51270255 A US51270255 A US 51270255A US 2944326 A US2944326 A US 2944326A
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Prior art keywords
blade
base
staking
ring
coining
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Expired - Lifetime
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US512702A
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Kurt R Stadthaus
Bobo Melvin
Robert H Schaefer
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General Electric Co
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General Electric Co
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Priority to US512702A priority Critical patent/US2944326A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
    • E01B9/06—Railways spikes
    • E01B9/08—Elastic spikes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49323—Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49934—Inward deformation of aperture or hollow body wall by axially applying force

Definitions

  • This invention relates to a method and means for staking blades and, more particularly, to a method and means for attaching blades such as rotor and stator blades as might be found in compressors and/or turbines. While compressors and turbines are used as an illustration, it is to be understood that the present invention is applicable to any device of a similar nature wherein blades must be attached to a rotating or a stationary member.
  • a further object is to provide a. method and means of attaching blades by staking, using as few parts as possible and still maintaining a secure fastening arrangement that is easily reproduced from blade to blade.
  • the invention consists in upsetting a blade base by coining to give adesired configuration thereto.
  • the memberto which'the blade is attached is formedto exactly match the blade configuration and operation is also done by coining.
  • the blade is held in position by staking it to the base member.
  • the staking consists merely in deforming the base member to cause it to flow and thereby secure the blade in position by reason of the configuration given to the blade base.
  • Figure 1 is a cross-sectional view of the coining operation performed on the blade base
  • FIG. 2 is a perspective view of the blade baseas formed by the coining operation
  • Figure 3 is a partial plan View of a pierced ring in which the blade of Figure 2 is to be mounted;
  • Figure 4 is a cross-sectional view of the ringshowing the coining operation performed thereon;
  • Figure 5 is a partial cross-sectional view of the blade in position in the ring before staking
  • Figure 6 is a view similar to Figure 5 showing the staking operation to join the parts together and;
  • Figure 7 is a partial perspective view of the staked blades.
  • a blade 10 having a generally rectangular-sided shank or baseli (shown in dotted lines) integrally formed therewith. It is not important that the base :11 be of any particular configuration at this stage nor of any particular finish. It is merely necessary that enough material be in the base to fulfill the requirements of the subsequent coining operation.
  • the blade is placed in a coining die which has the con-figuration which is to be formed on the blade base. As shown, die 12 has an aperture 13 therein in which the blade base is placed.
  • the sides of the aper-' 'ture 13 are preferably tapered as at 14 to a desired con-' figuration.
  • the remaining necked-down portion 15 of the die 12 holds the blade in position within .the die.
  • sides14j may be made to any desired dimensiondepending on theparticular 'blade jinvolved.
  • a pair of opposite inwardly' directed. members or bosses 16 are 'providedon the tapered sides. 14.
  • Bosses 16 are preferably symmetrically located with, respect to each other although it is not necessary that they be so located and more than one may be providcdvandj different shapes may housed, and the term groove as produced by bosses 1'6 intended to include all equivalents inasmuch as it is only necessary to create an irregularity,
  • Bosses 16 extend lengthwise of the blade base and are preferably terminated short of the edge of the blade base.
  • the base 11 is angularly deformed to conform to the shape of the die aperture, the metal in the blade base flowing outwardly to fill the aperture.
  • This operation is termed a coining operation to provide a given configuration' to the blade base and may be a punch press or roll coining result of the coining operation, has tapered sides 18 with staking grooves i9therein extending across the bladebase and preferably terminating short of the'edges of the blade of bosses 16 on the blade base as a result of fthe coining operation by punch 17.
  • the formation of the blade base in the aforementioned manner provides for exact duplication from blade to blade so that all the blades so formed are exactly the same. ing the blade base is much cheaper and faster than machining each blade individually.
  • FIG. 3 there is shown a ring member 24 before forming the curve therein such as might be used when the blades are to form the stator as in a compressor.
  • Ring member 20 has pierced therein, either before or-after curving, a series of slots 21 that are directed at a suitable angle across the ring as shown.
  • Figure 4 there is shown a cross-sectional view of the ring member of Figure 3.
  • Slots 21, as a result of the piercing operation may be broached if required to provide smooth sides to the slots Patented July 12, 1960*
  • the blade base as a
  • a slot 24, having continuous tapered sides is produced to exactly match the taperedv sides 18 of the blade base.
  • This coining. operation. may beperformed over and over again to produce formed slots 24. that are exact duplicates oi one another.
  • the blade base 11 and ring member 20 having been prepared, the next step in; the method is to attach the two members together by staking, As shown in Figure 5, the blade is droppedinto the ring, member, the tapered sides of the blade base conforming exactly to the tapered sides oi slot 24 in the ring, member. As shown in Figure 6,
  • a stop member such as 25, is brought against the ring.
  • the finished assembly may be brazed in addition to the staking. by the application of a high temperature braze to the joint between the blade base and the ring.
  • the hraze is. drawn in by capillary action to provide a cementing. bond between the blade base and the ring in. addition. to the securement. obtained by the staking.
  • The; tapered sides. herein shown are ameans of locking. the. blade in position in the ring from movement in one direction.
  • The, upsetting of the ring 2% ⁇ into staking grooves. 19 is an additional locking; means for the blade to. prevent movement in both directions. If brazing is additionally used on the staked blades, the fastening will be even more secure.
  • the staking may be done onthe opposite side ofthe ringirom that shown. In such a case, the staking die 26 may require provision for the blade so the operation. shownain Figure 6 is the preferable way of staking.
  • bases of compressor or turbine blades to: a; base member comprising, coining, the blade base in a die. to provide tapered sides thereon and simultaneously coining. grooves" into said: sides to extend only part: ofthe length-.01.- said sides, piercing, a slot inthe base member, coining the base member to form tapered sides in the slot which exactly match the taper of said blade base sides, assembling said blade base in said slot, and deforming the base member to cause the material of the base member to flow into said grooves to secure the blade base and member together.
  • the method of staking bases of compressor or turbine blades to a ring member comprising, coining. a rough blade base to provide a taper on the sides. thereof extend ing toward the blade, simultaneously coining: a groove in each of said tapered sides to provide parallel grooves ex tending less thanthe extent of the. sides, piercing the ring member to form a slot therein, smoothing the sides of said slot, coining the ring material witha smooth tapered die to form tapered sides in the slot which, exactly match the taper of the blade base sides, fitting. the tapered parts together, staking the ringmember, simultaneously oneach side of the blade base parallel with said grooves to cause the material of said ring ,member to flow into said. grooves and grip the, blade base sides, and flowing brazing. material into the joints between the blade base and ring. member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

y 1960 K. R. STADTHAUS EI'AL 2,944,326
METHOD OF STAKING BLADES Filed June 2, 1955 20 Z/ WW United States Patent METHOD OF STAKING BLADES Kurt R. Stadthaus, Madeira, and Melvin Bobo, Reading,
Ohio, and Robert H. Schaefer, Stratford, Conn, a..- signors to General Electric Company, a corporation of New York Filed June 2, 1955, Sophie. 512,702
3 Claims. (Cl. 29--'156.8)
This invention relates to a method and means for staking blades and, more particularly, to a method and means for attaching blades such as rotor and stator blades as might be found in compressors and/or turbines. While compressors and turbines are used as an illustration, it is to be understood that the present invention is applicable to any device of a similar nature wherein blades must be attached to a rotating or a stationary member.
One of the common ways of attaching blades is by the conventional dovetail arrangement. Many modifications of this have been disclosed in the prior art to solve various problems. The machining required in such a fastening means is considerable, and consequentlythe cost of the in dividual blades is high. The method disclosed herein avoids most of the machining normally required and 7 A further object is to provide a. method and means of attaching blades by staking, using as few parts as possible and still maintaining a secure fastening arrangement that is easily reproduced from blade to blade.
Briefly described, .the invention consists in upsetting a blade base by coining to give adesired configuration thereto. The memberto which'the blade is attached is formedto exactly match the blade configuration and operation is also done by coining. -When the parts are assembled, the blade is held in position by staking it to the base member. The staking consists merely in deforming the base member to cause it to flow and thereby secure the blade in position by reason of the configuration given to the blade base. While the present invention will be illustrated with reference to a staked stator blade, it is applicable to many uses wherein a blade is to be fastened to a base member, and such uses may be apparent to those skilled in the art. Therefore, the staked stator blade application is merely intended to be illustrative of a specific application of the invention.
operation.
My invention will be better understood from the following description taken in connection with the accompanying drawing and its scope will be pointed out in the appended claims.
In the drawings: 7
Figure 1 is a cross-sectional view of the coining operation performed on the blade base;
Figure 2 is a perspective view of the blade baseas formed by the coining operation; 7
Figure 3 is a partial plan View of a pierced ring in which the blade of Figure 2 is to be mounted;
'ice
Figure 4 is a cross-sectional view of the ringshowing the coining operation performed thereon;
Figure 5 is a partial cross-sectional view of the blade in position in the ring before staking;
Figure 6 is a view similar to Figure 5 showing the staking operation to join the parts together and;
Figure 7 is a partial perspective view of the staked blades.
Referring first to Figure 1, there is shown a blade 10 having a generally rectangular-sided shank or baseli (shown in dotted lines) integrally formed therewith. It is not important that the base :11 be of any particular configuration at this stage nor of any particular finish. It is merely necessary that enough material be in the base to fulfill the requirements of the subsequent coining operation. The blade is placed in a coining die which has the con-figuration which is to be formed on the blade base. As shown, die 12 has an aperture 13 therein in which the blade base is placed. The sides of the aper-' 'ture 13 are preferably tapered as at 14 to a desired con-' figuration. The remaining necked-down portion 15 of the die 12 holds the blade in position within .the die. It will be' understood that the taper of sides14jmay be made to any desired dimensiondepending on theparticular 'blade jinvolved. A pair of opposite inwardly' directed. members or bosses 16 are 'providedon the tapered sides. 14. Bosses 16 are preferably symmetrically located with, respect to each other although it is not necessary that they be so located and more than one may be providcdvandj different shapes may housed, and the term groove as produced by bosses 1'6 intended to include all equivalents inasmuch as it is only necessary to create an irregularity,
that the subsequent deforming operation may anchor on as will be apparent hereinafter. Bosses 16 extend lengthwise of the blade base and are preferably terminated short of the edge of the blade base.
When the blade, as located in die 12, is struck. by
punch 17 moving in the direction shown by the arrow,
the base 11 is angularly deformed to conform to the shape of the die aperture, the metal in the blade base flowing outwardly to fill the aperture. This operation is termed a coining operation to provide a given configuration' to the blade base and may be a punch press or roll coining result of the coining operation, has tapered sides 18 with staking grooves i9therein extending across the bladebase and preferably terminating short of the'edges of the blade of bosses 16 on the blade base as a result of fthe coining operation by punch 17. The formation of the blade base in the aforementioned manner provides for exact duplication from blade to blade so that all the blades so formed are exactly the same. ing the blade base is much cheaper and faster than machining each blade individually.
The blade, as it will be used, having been formed, it is now necessary to prepare the member in which the blade is to be mounted. Referring now to Figure 3, there is shown a ring member 24 before forming the curve therein such as might be used when the blades are to form the stator as in a compressor. Ring member 20 has pierced therein, either before or-after curving, a series of slots 21 that are directed at a suitable angle across the ring as shown. Referring next to Figure 4, there is shown a cross-sectional view of the ring member of Figure 3. Slots 21, as a result of the piercing operation, may be broached if required to provide smooth sides to the slots Patented July 12, 1960* As seen in Figure 2,, the blade base, as a In addition, this method. offormmoving in the. direction shown by the arrow, against a stop member 23. By the use of this coining operation, a slot 24, having continuous tapered sides, is produced to exactly match the taperedv sides 18 of the blade base. This coining. operation. may beperformed over and over again to produce formed slots 24. that are exact duplicates oi one another.
The blade base 11 and ring member 20 having been prepared, the next step in; the method is to attach the two members together by staking, As shown in Figure 5, the blade is droppedinto the ring, member, the tapered sides of the blade base conforming exactly to the tapered sides oi slot 24 in the ring, member. As shown in Figure 6,
a stop member, such as 25, is brought against the ring.
20 on one side, and as herein shown it may be brought. against the blade side of the ring. A staking die 26 is forced against the ring. Staking die 26 has pressure applying extensions 17 thereon to straddle the base of the blade. By the application of. pressure to, staking die 26, the; metal of ring. 20 is caused to flow into the staking grooves 19 in the blade base onv both sides thereof. Thus, the blade is securely locked. to the curved ring member 20, to provide av staked bladeassembly as shown in Figure 7.
The finished assembly may be brazed in addition to the staking. by the application of a high temperature braze to the joint between the blade base and the ring. The hraze is. drawn in by capillary action to provide a cementing. bond between the blade base and the ring in. addition. to the securement. obtained by the staking.
The; tapered sides. herein shown are ameans of locking. the. blade in position in the ring from movement in one direction. The, upsetting of the ring 2%} into staking grooves. 19 is an additional locking; means for the blade to. prevent movement in both directions. If brazing is additionally used on the staked blades, the fastening will be even more secure. As shown in Figure 6, it will be obvious that the staking may be done onthe opposite side ofthe ringirom that shown. In such a case, the staking die 26 may require provision for the blade so the operation. shownain Figure 6 is the preferable way of staking.
Whilewehave hereinbefore-showrr an improved method of staking blades. to provide easily reproduced members in lightweight construction, it will be apparent to those skilled the art that the method andv means of. attachmentmay have other uses that fall within the scope of the appended claims...
We claim:
1. The methodof staking. bases of compressor or turbine blades to: a; base member comprising, coining, the blade base in a die. to provide tapered sides thereon and simultaneously coining. grooves" into said: sides to extend only part: ofthe length-.01.- said sides, piercing, a slot inthe base member, coining the base member to form tapered sides in the slot which exactly match the taper of said blade base sides, assembling said blade base in said slot, and deforming the base member to cause the material of the base member to flow into said grooves to secure the blade base and member together.
2. The method of staining bases of compressor or turbine blades to a ring member comprising, coining the blade base ina die to provide tapered sides thereon and simultaneously coining parallel grooves. into said sides to extend only part or the lengthof said sides, piercing a slot in the ring. member, coining the met-abet to form tapered sides in the slot which exactly match the taper of said blade base sides, assembling the blade base in said slot, and deforming the base member with a die straddling the blade base to cause the. material of the base member to flow into said grooves to secure the base and member together.
3. The method of staking bases of compressor or turbine blades to a ring member comprising, coining. a rough blade base to provide a taper on the sides. thereof extend ing toward the blade, simultaneously coining: a groove in each of said tapered sides to provide parallel grooves ex tending less thanthe extent of the. sides, piercing the ring member to form a slot therein, smoothing the sides of said slot, coining the ring material witha smooth tapered die to form tapered sides in the slot which, exactly match the taper of the blade base sides, fitting. the tapered parts together, staking the ringmember, simultaneously oneach side of the blade base parallel with said grooves to cause the material of said ring ,member to flow into said. grooves and grip the, blade base sides, and flowing brazing. material into the joints between the blade base and ring. member.
References Gited in the" file of this patent UNITED STATES PATENTS 868,4;1'9 Oct. 15, 1907" 905,460 Rice Dec. 1 1 908 933,379 Ljungstrom Sept; 7, L909 953,563 Thiel! M arL 29; 1910 958,239-' Emden et al'.- May 17,- 1910 1,101,645 Ljungstrom: June 30} 191% 1,141,190 Kilker J une' 1*, 191$" 1,470,506 Steenstrup Oct; 9; 1923 1,773,410 Selah -Aug.- 19} 1930 2,278,040 Allen Mar: 3&1, 1942 2,279,258 Ailleni s Apr. 7, 1942 2,673,709 Barnes Mar. 30; 1 1 2,680,286 Will'goos June 8 19 54 FOREIGN PKTENTS' 552,290 France Jam 19,.- L923? 334-,0l9 Italy Jam- 20 1966
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Cited By (23)

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US3133644A (en) * 1961-11-13 1964-05-19 Chamberlain Corp Refrigerator shelf structure
US3339833A (en) * 1963-12-04 1967-09-05 Rolls Royce Axial fluid flow machine such as a compressor or turbine
US3378141A (en) * 1963-03-28 1968-04-16 Res & Dev Pty Ltd Froth flotation apparatus
US3922768A (en) * 1973-06-26 1975-12-02 Kiyotelu Takayasu Method of manufacturing a heat exchanger
DE2648637A1 (en) * 1976-07-30 1978-02-02 Stauff Corp METHOD OF ATTACHING A NUT TO A SUPPORT PLATE
US4182012A (en) * 1975-11-05 1980-01-08 Danfoss A/S Method of making a piston with a gudgeon pin
US4212423A (en) * 1978-09-22 1980-07-15 Raytheon Company Magnetron anode manufacture
DE3145469A1 (en) * 1981-11-16 1983-05-19 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Method and apparatus for producing a positive and non-positive connection
US4815192A (en) * 1985-01-23 1989-03-28 Hitachi, Ltd. Method of securing an elongated vibration amplifier member to an annular vibrating reed
EP0350591A1 (en) * 1988-06-23 1990-01-17 Metallbau Koller Ag Heat-insulated composite frame member
FR2671140A1 (en) * 1990-12-27 1992-07-03 Snecma Guide vanes for a turbo machine compressor
FR2695050A1 (en) * 1992-08-31 1994-03-04 Serio Thomas Di Process for manufacturing cast alloy parts with reinforcement zones.
US5406698A (en) * 1993-10-06 1995-04-18 R-Theta Inc. Apparatus for fabricating high fin density heatsinks
US5941651A (en) * 1994-06-10 1999-08-24 Di Serio; Thomas Process for the fabrication of parts made of cast alloys with reinforcement zones
US20080006671A1 (en) * 2006-07-06 2008-01-10 Testo Industry Corp. Piston assembly
US20100158690A1 (en) * 2008-12-24 2010-06-24 Cortequisse Jean-Francois One-Piece Bladed Drum of an Axial Turbomachine Compressor
CN102192186A (en) * 2010-03-12 2011-09-21 航空技术空间股份有限公司 Reduced monobloc multistage drum of axial compressor
EP2706242A1 (en) 2012-09-11 2014-03-12 Techspace Aero S.A. Fixing of blades on an axial compressor drum
US20160130957A1 (en) * 2014-11-12 2016-05-12 Rolls-Royce North American Technologies, Inc. Turbine blisk including ceramic matrix composite blades and methods of manufacture
US9506357B1 (en) 2015-12-08 2016-11-29 General Electric Company Turbomachine staking tool
US20170146020A1 (en) * 2015-11-19 2017-05-25 General Electric Company Rotor assembly for use in a turbofan engine and method of assembling
US10544691B2 (en) * 2018-01-04 2020-01-28 Solar Turbines Incorporated Staking tool assembly
US10576533B2 (en) 2017-02-16 2020-03-03 General Electric Company Staking tool

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US2673709A (en) * 1949-12-28 1954-03-30 Utica Drop Forge & Tool Corp Compounded airfoil blade structure and method of making same
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US1101645A (en) * 1913-01-31 1914-06-30 Ljungstroems Angturbin Ab Method of manufacturing blade-rings for steam and gas turbines.
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US2278040A (en) * 1939-10-23 1942-03-31 Allis Chalmers Mfg Co Turbine blading
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US3378141A (en) * 1963-03-28 1968-04-16 Res & Dev Pty Ltd Froth flotation apparatus
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US3922768A (en) * 1973-06-26 1975-12-02 Kiyotelu Takayasu Method of manufacturing a heat exchanger
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US4095327A (en) * 1976-07-30 1978-06-20 Stauff Corporation Method of securing a nut to a support plate
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DE3145469A1 (en) * 1981-11-16 1983-05-19 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Method and apparatus for producing a positive and non-positive connection
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EP0350591A1 (en) * 1988-06-23 1990-01-17 Metallbau Koller Ag Heat-insulated composite frame member
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FR2695050A1 (en) * 1992-08-31 1994-03-04 Serio Thomas Di Process for manufacturing cast alloy parts with reinforcement zones.
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US20080006671A1 (en) * 2006-07-06 2008-01-10 Testo Industry Corp. Piston assembly
US20100158690A1 (en) * 2008-12-24 2010-06-24 Cortequisse Jean-Francois One-Piece Bladed Drum of an Axial Turbomachine Compressor
EP2204541A1 (en) 2008-12-24 2010-07-07 Techspace Aero S.A. Rotor stage of an integral bladed compressor drum of an axial turbomachine and corresponding manufacturing method.
US8414256B2 (en) * 2008-12-24 2013-04-09 Techspace Aero, S.A. One-piece bladed drum of an axial turbomachine compressor
CN102192186B (en) * 2010-03-12 2015-03-25 航空技术空间股份有限公司 Reduced monoblock multistage drum of axial compressor
CN102192186A (en) * 2010-03-12 2011-09-21 航空技术空间股份有限公司 Reduced monobloc multistage drum of axial compressor
RU2634990C2 (en) * 2012-09-11 2017-11-08 Сафран Аэро Бустерс Са Attachment of blades to drum of axial turbine compressor
US20140079552A1 (en) * 2012-09-11 2014-03-20 Techspace Aero S.A. Attaching The Blades To The Drum Of An Axial Turbocompressor
US9598968B2 (en) * 2012-09-11 2017-03-21 Safran Aero Boosters Sa Attaching the blades to the drum of an axial turbocompressor
EP2706242A1 (en) 2012-09-11 2014-03-12 Techspace Aero S.A. Fixing of blades on an axial compressor drum
US20160130957A1 (en) * 2014-11-12 2016-05-12 Rolls-Royce North American Technologies, Inc. Turbine blisk including ceramic matrix composite blades and methods of manufacture
US10280768B2 (en) * 2014-11-12 2019-05-07 Rolls-Royce North American Technologies Inc. Turbine blisk including ceramic matrix composite blades and methods of manufacture
US20170146020A1 (en) * 2015-11-19 2017-05-25 General Electric Company Rotor assembly for use in a turbofan engine and method of assembling
US10125619B2 (en) * 2015-11-19 2018-11-13 General Electric Company Rotor assembly for use in a turbofan engine and method of assembling
US9506357B1 (en) 2015-12-08 2016-11-29 General Electric Company Turbomachine staking tool
US10576533B2 (en) 2017-02-16 2020-03-03 General Electric Company Staking tool
US10544691B2 (en) * 2018-01-04 2020-01-28 Solar Turbines Incorporated Staking tool assembly

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