NL2032715B1 - Aero-engine compressor disc assembly inertia friction welding device and method - Google Patents

Aero-engine compressor disc assembly inertia friction welding device and method Download PDF

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Publication number
NL2032715B1
NL2032715B1 NL2032715A NL2032715A NL2032715B1 NL 2032715 B1 NL2032715 B1 NL 2032715B1 NL 2032715 A NL2032715 A NL 2032715A NL 2032715 A NL2032715 A NL 2032715A NL 2032715 B1 NL2032715 B1 NL 2032715B1
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Netherlands
Prior art keywords
workpiece
main shaft
tailstock
clamp
welding
Prior art date
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NL2032715A
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Dutch (nl)
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NL2032715A (en
Inventor
Zhai Limin
Yan Hanlin
Wang Qi
Zhou Jun
Lin Yue
Zhang Wenhan
Wu Yanquan
Qin Feng
Zhao Yushan
Liang Wu
Li Rui
Zhang Chunbo
Yang Haifeng
Li Yunlei
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Harbin Welding Inst Co Ltd
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Publication of NL2032715A publication Critical patent/NL2032715A/en
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Publication of NL2032715B1 publication Critical patent/NL2032715B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/121—Control circuits therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/24—Preliminary treatment
    • 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • F01D5/063—Welded rotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/001—Turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/006—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F05D2230/239—Inertia or friction welding

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

An aero-engine compressor disc assembly inertia friction welding device and a method are disclosed, wherein the device comprises a main shaft workpiece mounting system, a tailstock workpiece mounting system, and a control system. A main shaft workpiece mounting system comprises a drive motor, a main shaft assembly, an inertia disc and a main shaft clamp, wherein the main shaft assembly comprises a housing and a main shaft rotatably mounted on the housing, the main shaft is in transmission connection with the drive motor, the inertia disc is secured to the main shaft, the main shaft clamp is secured to the main shaft, and the main shaft clamp is used for clamping a main shaft workpiece, the tailstock workpiece mounting system comprises an upsetting oil cylinder, a tailstock, and a tailstock clamp.

Description

AERO-ENGINE COMPRESSOR DISC ASSEMBLY INERTIA FRICTION
WELDING DEVICE AND METHOD
TECHNICAL FIELD
[OI] The present invention relates to the field of aircraft engine component manufacturing, and more particularly to an aero-engine compressor disc assembly inertia friction welding device and method.
BACKGROUND ART
[02] As an important component of an aero-engine, the compressor is a mechanical device that transmits mechanical energy to the gas to complete the compression of a gas medium in the thermodynamic cycle of the engine, thereby increasing the gas pressure.
Compressors are mainly composed of low-pressure compressors and high-pressure compressors. As an important part of a compressor, the compressor discs are titanium alloy, high-temperature alloy, and powder high-temperature alloy from a one-stage disc to a ten-stage disc. The traditional connections between the compressor discs are mechanical bolt connection and electron beam welding. However, the mechanical connection results in a large thickness and high mass of the compressor disc, which increases the overall weight of the engine and is not conducive to the improvement of thrust-weight ratio and performance of the aero-engine. However, the electron beam welding method has higher heat input, larger welding deformation, higher residual stress after welding, and difficult welding of dissimilar materials, which cannot fully meet the design and manufacturing requirements of the compressor disc of the aero-engine, seriously restricting the overall performance of the aero-engine.
[03] Therefore, how to improve the welding quality between adjacent stage discs of an aero-engine compressor and reduce the overall weight of the engine is a technical problem to be solved urgently by a person skilled in the art.
SUMMARY
[04] It is an object of the present invention to provide an aero-engine compressor disc assembly inertia friction welding device and method for improving the welding quality between adjacent stage discs of a high bypass ratio aircraft engine compressor and reducing the overall weight of the aircraft engine.
[05] In order to achieve the above object, the present invention provides the following scheme:
[06] An aero-engine compressor disc assembly inertia friction welding device is disclosed comprising:
[07] a main shaft workpiece mounting system for driving a main shaft workpiece to rotate, the main shaft workpiece mounting system comprising a drive motor, a main shaft assembly, an inertia disc and a main shaft clamp, the main shaft assembly comprising a housing and a main shaft rotatably mounted on the housing, the main shaft being in transmission connection with the drive motor, the inertia disc being secured to the main shaft, the main shaft clamp being secured to the main shaft, and the main shaft clamp being used for clamping the main shaft workpiece;
[08] a tailstock workpiece mounting system for driving a tailstock workpiece along a straight line close to or far from the main shaft workpiece, the tailstock workpiece mounting system comprising a upsetting oil cylinder, a tailstock and a tailstock clamp, the upsetting oil cylinder being used for pushing the tailstock close to or far from the main shaft clamp, the tailstock clamp being secured to the tailstock, and the tailstock clamp being used for clamping the tailstock workpiece;
[09] a control system respectively electrically connected to the drive motor and the upsetting oil cylinder;
[10] wherein the main shaft workpiece comprises a first stage disc and the tailstock workpiece comprises a second stage disc, and the tailstock workpiece mounting system is capable of contacting the second stage disc with the first stage disc, and the contact surface of the second stage disc with the first stage disc is a welding end surface of two adjacent stage discs in an aero-engine compressor disc assembly.
[11] Preferably, an air cooler is provided adjacent to the drive motor for cooling the drive motor.
[12] Preferably, a lathe bed and a base are further comprised, the drive motor is secured to the lathe bed, the upsetting oil cylinder comprises an oil cylinder body and a piston rod, the protruding end of the piston rod is secured to the base, and the base is secured to the lathe bed.
[13] Preferably, the tailstock is slidably mounted on the lathe bed.
[14] The present invention also discloses an aero-engine compressor disc assembly inertia friction welding method using the above-described lathe bed aero-engine compressor disc assembly inertia friction welding device comprising the steps of:
[15] Sl. wiping a workpiece to be welded with acetone, removing oil stains, oxides, iron filings and burrs on the main shaft workpiece and the tailstock workpiece, clamping the main shaft workpiece to be welded in the main shaft clamp, and clamping the tailstock workpiece to be welded in the tailstock clamp;
[16] S2. driving, by the upsetting oil cylinder, the tailstock workpiece to move, so that the welding end surface of the tailstock workpiece contacts the welding end surface of the main shaft workpiece, and then spacing the tailstock workpiece apart from the main shaft workpiece, and aligning to adjust the tailstock workpiece with respect to the main shaft workpiece;
[17] S3. determining the corresponding main shaft rotation speed, main shaft workpiece moment of inertia, and friction pressure according to the physical, chemical and mechanical properties of the material to be welded, and inputting same into the control system;
[18] S4. driving, by the upsetting oil cylinder, the tailstock workpiece to move, so that the welding end surface of the tailstock workpiece contacts the welding end surface of the main shaft workpiece, and then stopping moving the tailstock workpiece after leaving same a distance from the main shaft workpiece;
[19] SS. driving, by the drive motor, the main shaft workpiece to rotate, and increasing the rotation speed from 0 to the rotation speed of the main shaft and keeping stable;
[20] S6. no longer outputting power from the drive motor, and driving, by the upsetting oil cylinder, the tailstock workpiece to move, so that the welding end surface of the tailstock workpiece is in contact with the welding end surface of the main shaft workpiece, and applying a friction pressure; and
[21] S7, stopping the rotation of the main shaft workpiece, maintaining the friction pressure for a period of time, and then releasing the main shaft clamp and the tailstock clamp, and removing the welding workpiece formed by welding the main shaft workpiece and the tailstock workpiece.
[22] The present invention also discloses another aero-engine compressor disc assembly inertia friction welding method using the above-described lathe bed aero-engine compressor disc assembly inertia friction welding device comprising the steps of:
[23] Sl. wiping a workpiece to be welded with acetone, removing oil stains, oxides, iron filings, and burrs on the main shaft workpiece and the tailstock workpiece, clamping the main shaft workpiece to be welded in the main shaft clamp, and clamping the tailstock workpiece to be welded in the tailstock clamp;
[24] S2. driving, by the upsetting oil cylinder, the tailstock workpiece to move, so that the welding end surface of the tailstock workpiece contacts the welding end surface of the main shaft workpiece, and then spacing the tailstock workpiece apart from the main shaft workpiece, and aligning to adjust the tailstock workpiece with respect to the main shaft workpiece;
[25] S3. determining the corresponding main shaft rotation speed, main shaft workpiece moment of inertia, friction pressure, conversion rotation speed and upsetting pressure according to the physical, chemical and mechanical properties of the material to be welded, and inputting same into the control system, wherein the upsetting pressure is greater than the friction pressure;
[26] S4. driving, by the upsetting oil cylinder, the tailstock workpiece to move, so that the welding end surface of the tailstock workpiece contacts the welding end surface of the main shaft workpiece, and then stopping moving the tailstock workpiece after leaving same a distance from the main shaft workpiece;
[27] S5. driving, by the drive motor, the main shaft workpiece to rotate, and increasing the rotation speed from 0 to the rotation speed of the main shaft and keeping stable;
[28] S6. no longer outputting power from the drive motor, and driving, by the upsetting oil cylinder, the tailstock workpiece to move, so that the welding end surface of the tailstock workpiece is in contact with the welding end surface of the main shaft workpiece, 5 and applying a friction pressure; and
[29] S7. after reducing the rotation speed of the main shaft workpiece to the conversion rotation speed, applying, by the upsetting oil cylinder, an upsetting pressure and maintaining same for a period of time, then releasing the main shaft clamp and the tailstock clamp, and removing the welding workpiece formed by welding the main shaft workpiece and the tailstock workpiece.
[30] The present invention achieves the following technical effects with respect to the prior art:
[31] In the present invention, the inertia friction welding method is used to weld and manufacture an engine compressor disc, after welding, the radial deviation of the center of each stage disc is small, the deviation of the axial shortening amount is small, the welding joint has a high quality, a small deformation and no welding defects such as slag inclusion, air holes, and cracks. It is applicable to the welding of titanium alloy and high-temperature alloy compressor disc as well as the high-quality connection between compressor discs made of different materials. It can effectively reduce the weight of the engine and improve the thrust-weight ratio of the engine.
BRIEF DESCRIPTION OF THE DRAWINGS
[32] In order to more clearly illustrate the embodiments of the present invention or the prior art, reference will now be made to the accompanying drawings which form a part hereof, and in which it will be apparent to a person skilled in the art that the various embodiments of the present invention are shown, by way of illustration only, and that other drawings may be made without departing from the spirit and scope of the invention.
[33] Fig 1 is a schematic diagram of an inertia friction welding device for an aero-engine compressor disc assembly according to the embodiment;
[34] Fig 2 is a schematic diagram of the welding of a nine-stage disc as the main shaft workpiece and a ten-stage disc as the tailstock workpiece;
[35] Fig. 3 is a schematic view of the welding workpiece of Fig. 2;
[36] Fig. 4 is a schematic diagram of the welding of an eight-stage disc as the main shaft workpiece and a nine-stage disc and ten-stage disc assembling unit as the tailstock workpiece;
[37] Fig 51s a schematic view of the welding workpiece of Fig. 4;
[38] Fig. 6 is a schematic diagram of the welding of a seven-stage disc as the main shaft workpiece and an eight-stage disc, a nine-stage disc, and a ten-stage disc assembling unit as the tailstock workpiece;
[39] Fig 71s a schematic view of the welding workpiece of Fig. 6;
[40] Fig. 8 is a schematic diagram of the welding of a six-stage disc as the main shaft workpiece and a seven-stage disc, an eight-stage disc, a nine-stage disc, and a ten-stage disc assembling unit as the tailstock workpiece;
[41] Fig. 9is a schematic view of the welding workpiece of Fig. 8;
[42] Description of reference numerals: 100-inertia friction welding device for an aero-engine compressor disc assembly; 1-lathe bed; 2-air cooler; 3-drive motor; 4-coupling; 5-main shaft assembly; 6-inertia disc; 7-main shaft clamp; 8-main shaft workpiece;
O-tailstock workpiece; 10-tailstock clamp; 11-tailstock; 12-oil cylinder body; 13-piston rod, 14-base; 15-six-stage disc; 16-seven-stage discs; 17-eight-stage disc; 18-nine-stage disc; 19-ten-stage disc; 20-welding seam; 21-locating pad.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[43] The technical solutions in the embodiments of the present invention will be clearly and completely described lathe bed below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described lathe bed embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without involving any inventive effort fall within the scope of protection of the present invention.
[44] It is an object of the present invention to provide an aero-engine compressor disc assembly inertia friction welding device and method for improving the welding quality between adjacent stage discs of a high bypass ratio aircraft engine compressor. |45] The above objects, features, and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.
[46] As shown in Figs. 1-9, the embodiment provides an aero-engine compressor disc assembly inertia friction welding device 100 including a main shaft workpiece mounting system for driving rotation of the main shaft workpiece 8, a tailstock workpiece mounting system for driving the tailstock workpiece 9 in a straight line toward or away from the main shaft workpiece 8, and a control system.
[47] Therein, the main shaft workpiece mounting system comprises a drive motor 3, a main shaft assembly 5, an inertia disc 6, and a main shaft clamp 7. The main shaft assembly 5 comprises a housing and a main shaft rotatably mounted on the housing, the main shaft being drivingly connected to the drive motor 3. The inertia disc 6 is fixed to the main shaft for increasing the moment of inertia of the main shaft. A main shaft clamp 7 is fixed to the main shaft, and the main shaft clamp 7 is used for clamping a main shaft workpiece 8. The tailstock workpiece mounting system includes an upsetting oil cylinder, atailstock 11, and a tailstock clamp 10. The upsetting oil cylinder is used for pushing the tailstock 11 close to or away from the main shaft clamp 7, the tailstock clamp 10 is secured to the tailstock 11, and the tailstock clamp 10 is used for clamping the tailstock workpiece 9. The control system is electrically connected to the drive motor 3 and the upsetting oil cylinder, respectively, for controlling the output rotation speed of the drive motor 3 and the output pressure of the upsetting oil cylinder. In the embodiment, the main shaft is fixedly connected to the output shaft of the drive motor 3 via the coupling 4, and a person skilled in the art would have been able to adopt other common transmission connection manners, for example, the main shaft is drivingly connected to the output shaft of the drive motor 3 via a gear transmission manner. In addition, in order to facilitate the positioning of the tailstock workpiece 9, a locating pad 21 is provided between the tailstock workpiece 9 and the tailstock clamp 10 in this embodiment.
[48] Wherein the main shaft workpiece 8 comprises a first stage disc, the tailstock workpiece 9 comprises a second stage disc, and the tailstock workpiece mounting system enables the second stage disc to contact the first stage disc, and the contact surface between the second stage disc and the first stage disc is a welding end surface of two adjacent stage discs in an aero-engine compressor disc assembly, and the two welding end surfaces form a welding seam 20 after welding is completed. For example, in Fig. 2, the main shaft workpiece 8 is a nine-stage disc 18, and the tailstock workpiece 9 is a ten-stage disc 19; in Fig. 4, the main shaft workpiece 8 is an assembling unit of an eight-stage disc 17, and the tailstock workpiece 9 is an assembling unit of a nine-stage disc 18 and a ten-stage disc 19; in Fig. 6, the main shaft workpiece 8 is a seven-stage disc 16, and the tailstock workpiece 9 is an assembly of an eight-stage disc 17, a nine-stage disc 18 and a ten-stage disc 19; in Fig. 8, the main shaft workpiece 8 is a six-stage disc 15 and the tailstock workpiece 9 is an assembling unit of the seven-stage disc 16, the eight-stage disc 17, the nine-stage discs 18 and the ten-stage disc 19.
[49] In order to prevent the drive motor 3 from being damaged due to overheating, the embodiment further includes an air cooler 2 provided adjacent to the drive motor 3 for cooling the drive motor 3.
[50] Both the drive motor 3 and the upsetting oil cylinder need to be fixed during use.
In this embodiment, a lathe bed 1 and a base 14 are further comprised, and the drive motor 3 is secured to the lathe bed 1. The upsetting oil cylinder comprises an oil cylinder body 12 and a piston rod 13, the protruding end of the piston rod 13 is secured to a base 14, and the base 14 is secured to the lathe bed 1.
[51] In order to avoid the piston rod 13 being subjected to excessive radial forces, the tailstock 11 is slidably mounted on the lathe bed 1 in this embodiment.
[52] This embodiment also discloses an aero-engine compressor disc assembly inertia friction welding method using the above-described lathe bed aero-engine compressor disc assembly inertia friction welding device 100, which comprises the steps of:
[53] Sl. wiping the workpieces to be welded with acetone, removing oil stains, oxides, iron filings, and burrs on the main shaft workpiece 8 and the tailstock workpiece 9, clamping the main shaft workpiece 8 to be welded in the main shaft clamp 7, and clamping the tailstock workpiece 9 to be welded in the tailstock clamp 10. |54] S2. driving, by the upsetting oil cylinder, the tailstock workpiece 9 to move to contact the welding end surface of the tailstock workpiece 9 with the welding end surface of the main shaft workpiece 8, and then spacing the tailstock workpiece 9 apart from the main shaft workpiece 8, and aligning to adjust the tailstock workpiece 9 so that the center runout of the tailstock workpiece 9 is less than 0.05 mm with respect to the main shaft workpiece 8.
[55] S3. determining the corresponding main shaft rotation speed, main shaft workpiece moment of inertia, and friction pressure according to the physical, chemical and mechanical properties of the material to be welded, and inputting same into the control system.
[56] S4. driving, by the upsetting oil cylinder, the tailstock workpiece 9 to move, so that the welding end surface of the tailstock workpiece 9 contacts the welding end surface of the main shaft workpiece 8, and then stopping moving the tailstock workpiece 9 after leaving same at least 2 mm from the main shaft workpiece 8.
[57] SS. driving, by the drive motor 3, the main shaft workpiece 8 to rotate, and increasing the rotation speed from O to the rotation speed of the main shaft and keeping stable.
[58] 56. no longer outputting power from the drive motor 3, and driving, by the upsetting oil cylinder, the tailstock workpiece 9 to move, so that the welding end surface of the tailstock workpiece 9 is in contact with the welding end surface of the main shaft workpiece 8, and applying a friction pressure. Under the action of friction pressure, the rotation speed of the main shaft workpiece 8 decreases, and the welding end surface of the main shaft workpiece 8 and the welding end surface of the tailstock workpiece 9 rub against each other to generate heat, so that the material near the welding end surface is heated to a viscoplastic state, and the energy stored in the inertia disc 6 rotating at a high speed is gradually converted into the heat energy of the welding end surface, so that a layer of high-temperature viscoplastic metal is formed between the welding end surface of the main shaft workpiece 8 and the welding end surface of the tailstock workpiece 9. [S9] S7. stopping the rotation of the main shaft workpiece 8, maintaining the friction pressure for more than 30 s, then releasing the main shaft clamp 7 and the tailstock clamp 10, removing the welding workpiece formed by welding the main shaft workpiece 8 and the tailstock workpiece 9, cleaning the welding site, and ending the whole welding process.
During the pressure holding process, the high-temperature metal at the welding end surface forms a high-quality welding joint through the process of element diffusion and recovery recrystallization under the action of pressure.
[60] This embodiment also discloses another aero-engine compressor disc assembly inertia friction welding method using the above-described lathe bed aero-engine compressor disc assembly inertia friction welding device 100, which comprises the steps of:
[61] Sl. wiping the workpieces to be welded with acetone, removing oil stains, oxides, iron filings and burrs on the main shaft workpiece 8 and the tailstock workpiece 9, clamping the main shaft workpiece 8 to be welded in the main shaft clamp 7, and clamping the tailstock workpiece 9 to be welded in the tailstock clamp 10.
[62] S2. driving, by the upsetting oil cylinder, the tailstock workpiece 9 to move to contact the welding end surface of the tailstock workpiece 9 with the welding end surface of the main shaft workpiece 8, and then spacing the tailstock workpiece 9 apart from the main shaft workpiece 8, and aligning to adjust the tailstock workpiece 9 so that the center runout of the tailstock workpiece 9 is less than 0.05 mm with respect to the main shaft workpiece 8.
[63] S3. determining the corresponding main shaft rotation speed, main shaft workpiece moment of inertia, friction pressure, conversion rotation speed and upsetting pressure according to the physical, chemical and mechanical properties of the material to be welded, and inputting same into the control system, wherein the upsetting pressure is greater than the friction pressure.
[64] S4. driving, by the upsetting oil cylinder, the tailstock workpiece 9 to move, so that the welding end surface of the tailstock workpiece 9 contacts the welding end surface of the main shaft workpiece 8, and then stopping moving the tailstock workpiece 9 after leaving same at least 2 mm from the main shaft workpiece 8. |65] SS. driving, by the drive motor 3, the main shaft workpiece 8 to rotate, and increasing the rotation speed from O to the rotation speed of the main shaft and keeping stable.
[66] S6. no longer outputting power from the drive motor 3, and driving, by the upsetting oil cylinder, the tailstock workpiece 9 to move, so that the welding end surface of the tailstock workpiece 9 is in contact with the welding end surface of the main shaft workpiece 8, and applying a friction pressure. Under the action of friction pressure, the rotation speed of the main shaft workpiece 8 decreases, the welding end surface of the main shaft workpiece 8 and the welding end surface of the tailstock workpiece 9 rub against each other to generate heat, so that the material near the welding end surface is heated to a viscoplastic state, and the energy stored in the inertia disc 6 rotating at a high speed is gradually converted into the heat energy of the welding end surface, so that a layer of high-temperature viscoplastic metal is formed between the welding end surface of the main shaft workpiece 8 and the welding end surface of the tailstock workpiece 9.
[67] S7. after reducing the rotation speed of the main shaft workpiece 8 to the conversion rotation speed, applying, by the upsetting oil cylinder, an upsetting pressure and maintaining same for more than 30 s, then releasing the main shaft clamp 7 and the tailstock clamp 10, and removing the welding workpiece formed by welding the main shaft workpiece 8 and the tailstock workpiece 9. During the pressure holding process, the high-temperature metal at the welding end surface forms a high-quality welding joint through the process of element diffusion and recovery recrystallization under the action of pressure.
[68] It should be noted that the main difference between the above-mentioned two inertia friction welding methods is that in steps S6 to S7, during the process of decelerating the main shaft workpiece 8 from the main shaft rotation speed to stopping rotation, one continuously applies the friction pressure, and the other first applies the friction pressure and then applies the upsetting pressure, wherein the upsetting pressure is greater than the friction pressure.
[69] The principles and embodiments of the description have been described with specific examples, which are presented to aid in the understanding of the methods and core concepts of the present invention; at the same time, changes will occur to a person skilled in the art in light of the teachings of this invention in both the detailed description and the scope of application. In view of the above, this description should not be construed as limiting the invention.

Claims (6)

ConclusiesConclusions 1. Aeromotorcompressorschijfsamenstel-inertiewrijvingslasinrichting die het volgende omvat: een hoofdaswerkstukmonteersysteem voor het aandrijven van een hoofdaswerkstuk om te roteren, waarbij het hoofdaswerkstukmonteersysteem een aandrijfmotor, een hoofdassamenstel, een inertieschijf en een hoofdasklem omvat, het hoofdassamenstel een behuizing en een hoofdas die roteerbaar op de behuizing gemonteerd is, omvat, waarbij de hoofdas in transmissieverbinding is met de aandrijfmotor, de inertieschijf bevestigd is aan de hoofdas, de hoofdasklem bevestigd is aan de hoofdas, en de hoofdasklem gebruikt wordt voor het klemmen van het hoofdaswerkstuk; een lossekopwerkstukmonteersysteem voor het aandrijven van een lossekopwerkstuk langs een rechte lijn die dichtbij of ver weg is van het hoofdaswerkstuk, waarbij het lossekopwerkstukmonteersysteem een stuikoliecilinder, een losse kop en een lossekopklem omvat, waarbij de stuikoliecilinder gebruikt wordt voor het duwen van de losse kop die dichtbij of ver weg is van de hoofdasklem, waarbij de lossekopklem bevestigd is aan de losse kop, en waarbij de lossekopklem gebruikt wordt voor het klemmen van het lossekopwerkstuk; een besturingssysteem dat respectievelijk elektrisch verbonden is met de aandrijfmotor en de stuikoliecilinder; waarbij het hoofdaswerkstuk een eerste faseschijf omvat en het lossekopwerkstuk een tweede faseschijf omvat, en waarbij het lossekopwerkstukmonteersysteem in staat is om de tweede faseschijf in contact te brengen met de eerste faseschijf, en waarbij het contactoppervlak van de tweede faseschijf met de eerste faseschijf een laseindoppervlak van twee aangrenzende faseschijven in een aeromotorcompressorschijfsamenstel is.1. Aeromotor compressor disk assembly inertial friction welding apparatus comprising: a main shaft workpiece mounting system for driving a main shaft workpiece to rotate, the main shaft workpiece mounting system comprising a drive motor, a main shaft assembly, an inertial disk and a main shaft clamp, the main shaft assembly a housing and a main shaft rotatable on the housing mounted, wherein the main shaft is in transmission connection with the driving motor, the inertia disk is fixed to the main shaft, the main shaft clamp is fixed to the main shaft, and the main shaft clamp is used for clamping the main shaft workpiece; a tailstock workpiece mounting system for driving a tailstock workpiece along a straight line that is near or far from the main axis workpiece, the tailstock workpiece mounting system comprising an upset oil cylinder, a tailstock and a tailstock clamp, the upset oil cylinder being used to push the tailstock which is close to or is far from the main shaft clamp, the tailstock clamp being attached to the tailstock, and the tailstock clamp being used for clamping the tailstock workpiece; a control system electrically connected to the drive motor and the upset oil cylinder, respectively; wherein the main shaft workpiece includes a first phase disk and the tailstock workpiece includes a second phase disk, and wherein the tailstock workpiece mounting system is capable of contacting the second phase disk with the first phase disk, and wherein the contact surface of the second phase disk with the first phase disk has a weld end surface of two adjacent phase sheaves in an aeromotor compressor sheave assembly. 2. Aeromotorcompressorschijfsamenstel-inertiewrijvingslasinrichting volgens conclusie 1, met het kenmerk dat het verder een luchtkoeler omvat die aangrenzend met de aandrijfmotor aangebracht is voor het koelen van de aandrijfmotor.The aeromotor compressor disc assembly inertial friction welding apparatus according to claim 1, characterized in that it further comprises an air cooler disposed adjacent the drive motor for cooling the drive motor. 3. Aeromotorcompressorschijfsamenstel-inertiewrijvingslasinrichting volgens conclusie 1, met het kenmerk dat het verder een draaibankbed en een basis omvat, waarbij de aandrijfmotor bevestigd is aan het draaibankbed, de stuikoliecilinder een oliecilinderlichaam en een zuigerstang omvat, waarbij het uitstekende eind van de zuigerstang aan de basis bevestigd is, en de basis bevestigd is aan het draaibankbed.The aeromotor compressor disk assembly inertial friction welding device according to claim 1, characterized in that it further comprises a lathe bed and a base, the driving motor being attached to the lathe bed, the upset oil cylinder comprising an oil cylinder body and a piston rod, the protruding end of the piston rod being attached to the base attached, and the base attached to the lathe bed. 4. Aeromotorcompressorschijfsamenstel-inertiewrijvingslasinrichting volgens conclusie 3, met het kenmerk dat de losse kop schuifbaar gemonteerd is op het draaibankbed.The aeromotor compressor disc assembly inertial friction welding apparatus according to claim 3, characterized in that the tailstock is slidably mounted on the lathe bed. 5. Aeromotorcompressorschijfsamenstel-inertiewrijvingslaswerkwijze die de aeromotorcompressorschijfsamenstel-inertiewrijvingslasinrichting gebruikt volgens een van conclusies 1-4, met het kenmerk dat de werkwijze de volgende stappen omvat: S1: het met aceton vegen van een werkstuk dat gelast dient te worden, het verwijderen van olievlekken, oxides, ijzervijlsel en bramen op het hoofdaswerkstuk en het lossekopwerkstuk, het in de hoofdasklem klemmen van het hoofdaswerkstuk dat gelast dient te worden, en het in de hoofdasklem klemmen van het lossekopwerkstuk dat gelast dient te worden; S2: het aandrijven door de stuikoliecilinder van het lossekopwerkstuk om te bewegen, zodanig dat het laseindoppervlak van het lossekopwerkstuk in contact staat met het laseindoppervlak van het hoofdaswerkstuk, en daarna het plaatsen van het lossekopwerkstuk op afstand van het hoofdaswerkstuk, en het uitlijnen om het lossekopwerkstuk bij te stellen ten opzichte van het hoofdaswerkstuk; S3: het bepalen van de overeenkomstige hoofdasrotatiesnelheid, hoofdaswerkstuktraagheidsmoment en wrijvingsdruk volgens de fysieke, chemische en mechanische eigenschappen van het materiaal dat gelast dient te worden, en het invoeren daarvan in het besturingssysteem; S4: het aandrijven door de stuikoliecilinder van het lossekopwerkstuk om te bewegen, zodanig dat het laseindoppervlak van het lossekopwerkstuk in contact staat met het laseindoppervlak van het hoofdaswerkstuk, en daarna het stoppen met bewegen van het lossekopwerkstuk na het laten van dezelfde afstand van het hoofdaswerkstuk; S5: het aandrijven door de aandrijfmotor van het hoofdaswerkstuk om te roteren en het verhogen van de rotatiesnelheid van 0 tot de rotatiesnelheid van de hoofdas en het stabiel blijven;The aeromotor compressor disc assembly inertial friction welding method using the aeromotor compressor disc assembly inertial friction welding device according to any one of claims 1 to 4, characterized in that the method comprises the following steps: S1: wiping a workpiece to be welded with acetone, removing oil stains, oxides, iron filings, and burrs on the main shaft workpiece and the tailstock workpiece, clamping the mainshaft workpiece to be welded into the mainshaft clamp, and clamping the tailstock workpiece to be welded into the mainshaft clamp; S2: driving by the upset oil cylinder of the tailstock workpiece to move, so that the welding end surface of the tailstock workpiece is in contact with the welding end surface of the main shaft workpiece, and then placing the tailstock workpiece away from the main shaft workpiece, and aligning it around the tailstock workpiece adjustable relative to the main shaft workpiece; S3: Determine the corresponding main shaft rotation speed, main shaft workpiece moment of inertia and friction pressure according to the physical, chemical and mechanical properties of the material to be welded, and input them into the control system; S4: driving by the upsetting oil cylinder of the tailstock workpiece to move so that the welding end surface of the tailstock workpiece is in contact with the welding end surface of the main shaft workpiece, and then stopping the movement of the tailstock workpiece after leaving the same distance from the main shaft workpiece; S5: Driving the main shaft workpiece by the drive motor to rotate and increase the rotation speed from 0 to the main shaft rotation speed and keep stable; S6: het niet langer uitvoeren van vermogen van de aandrijfmotor, en het aandrijven door de stuikoliecilinder van het lossekopwerkstuk om te bewegen zodanig dat het laseindoppervlak van het lossekopwerkstuk in contact staat met het laseindoppervlak van het hoofdaswerkstuk, en het uitoefenen van een wrijvingsdruk; en S7: het stoppen van de rotatie van het hoofdaswerkstuk, het behouden van de wrijvingsdruk gedurende een tijdsperiode, en daarna het loslaten van de hoofdasklem en de lossekopklem, en het verwijderen van het laswerkstuk dat gevormd is door het lassen van het hoofdaswerkstuk en het lossekopwerkstuk.S6: no longer output power from the driving motor, and driving by the upset oil cylinder of the tailstock workpiece to move so that the welding end surface of the tailstock workpiece is in contact with the welding end surface of the main shaft workpiece, and applying a frictional pressure; and S7: stopping the rotation of the main shaft workpiece, maintaining the friction pressure for a period of time, and then releasing the main shaft clamp and the tailstock clamp, and removing the welding workpiece formed by welding the mainshaft workpiece and the tailstock workpiece . 6. Aeromotorcompressorschijfsamenstel-inertiewrijvingslaswerkwijze die de aeromotorcompressorschijfsamenstel-inertiewrijvingslasinrichting gebruikt volgens een van conclusies 1-4, met het kenmerk dat de werkwijze de volgende stappen omvat: S3: het bepalen van de overeenkomstige hoofdasrotatiesnelheid, hoofdaswerkstuktraagheidsmoment, wrijvingsdruk, conversierotatiesnelheid en stuikdruk volgens de fysieke, chemische en mechanische eigenschappen van het materiaal dat gelast dient te worden, en het invoeren daarvan in het besturingssysteem, waarbij de stuikdruk groter is dan de wrijvingsdruk; S7: na het verminderen van de rotatiesnelheid van het hoofdaswerkstuk tot de conversierotatiesnelheid, het uitoefenen door de stuikoliecilinder van een stuikdruk en het behouden ervan gedurende een tijdsperiode, daarna het loslaten van de hoofdasklem en de lossekopklem, en het verwijderen van het laswerkstuk dat gevormd is door het lassen van het hoofdaswerkstuk en het lossekopwerkstuk.The aeromotor compressor disc assembly inertial friction welding method using the aeromotor compressor disc assembly inertial friction welding device according to any one of claims 1-4, characterized in that the method comprises the following steps: S3: determining the corresponding main shaft rotation speed, main shaft workpiece moment of inertia, friction pressure, conversion rotation speed and strain pressure according to the physical, chemical and mechanical properties of the material to be welded, and their input into the control system, where the upsetting pressure is greater than the friction pressure; S7: After reducing the rotational speed of the main shaft workpiece to the conversion rotational speed, applying an upsetting pressure by the upsetting oil cylinder and maintaining it for a period of time, then releasing the main shaft clamp and the tailstock clamp, and removing the weld workpiece that has been formed by welding the main shaft workpiece and the tailstock workpiece.
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