CN112179564B - Balancing device and method for multistage blisk - Google Patents
Balancing device and method for multistage blisk Download PDFInfo
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- CN112179564B CN112179564B CN202011052875.8A CN202011052875A CN112179564B CN 112179564 B CN112179564 B CN 112179564B CN 202011052875 A CN202011052875 A CN 202011052875A CN 112179564 B CN112179564 B CN 112179564B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/30—Compensating imbalance
- G01M1/36—Compensating imbalance by adjusting position of masses built-in the body to be tested
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Abstract
The invention discloses a balancing device and a method for a multistage blisk, wherein a balancing device with an open structure at one end is formed by a positioning ring and a balancing shaft, a balancing shaft mounting hole is arranged in the middle of the positioning ring, one end of the balancing shaft is fixed in the balancing shaft mounting hole of the positioning ring, a plurality of positioning ring spigots are arranged on a positioning table along the circumferential direction of the positioning ring, a blisk positioning ring is arranged on the balancing shaft, the diameter of the blisk positioning ring is the same as the minimum inner ring diameter of the multistage blisk to be balanced, the spigot of the multistage blisk to be balanced is fixedly connected with the positioning ring spigot on the positioning table, the supporting is formed on the multistage blisk to be balanced by the blisk positioning ring, the mounting size precision of the spigot at the mounting edge is ensured and the over-positioning is avoided through the fixed connection of the single-edge spigot, the device is simple in structure, the single-edge fixing is adopted, the other side of the balancing shaft is used for supporting balance, the mounting and the balancing clamp is convenient to disassemble and the balancing clamp is simple when the material is taken out in the balancing process, and the balancing quality and the efficiency are greatly improved.
Description
Technical Field
The invention belongs to a balancing process of a high-pressure gas rotor of an engine, and particularly relates to a balancing device and a balancing method of a multi-stage blisk.
Background
The high-pressure air compression rotor assembly of the aircraft engine comprises a first-stage integral blade disc, a second-stage integral blade disc, a third-stage integral blade disc, a front shaft neck, a grate disc, a connecting piece and the like, wherein in order to ensure that the residual unbalance of the high-pressure rotor assembly meets the design requirement, all stages of disk components of the high-pressure rotor assembly need to be independently distributed and balanced, and then the angular positions for assembling all stages of disk components are reasonably distributed according to the light point (or key point) positions of all stages of disk components and the size of the residual unbalance. In actual production, the balance quality of the high-pressure rotor is always influenced by the balance precision of the three-four-stage blisk.
3. The four-stage disc is formed by welding two-stage blisks as shown in figure 4, because two-stage blisks are integrally balanced without a rotatable supporting shaft, and the front and the rear ends of the blisks are also free of a balance supporting part and cannot be directly connected with a balancing machine, a balance clamp is adopted on site to balance, the existing balance clamp is shown in figure 5, the balance installation process is shown in figure 6, mounting edge rabbets at the two ends of the three-stage blisk and the four-stage blisk are respectively in tight fit with rabbets on a first positioning ring 21 and a second positioning ring 23 of the clamp through cold and hot loading, the first positioning ring 21 and the second positioning ring 23 are connected through a connecting rod 22, the end part of the connecting rod 22 is locked and fixed through a hexagon nut 24, then the two ends are respectively connected through a hexagon bolt 26, after the assembly is completed, the assembly is hoisted onto front and rear roller supports of the balancing machine, and the balance clamp is dynamically balanced by taking the two extending ends as the rabbets. The balancing method neglects the influence of the size precision and the coaxiality precision deviation of the rabbets of the mounting edges at the two ends on the balancing precision, easily leads to over-positioning, is easy to damage the rabbets of the three-stage and four-stage rotor assembly and the balance fixture, has large volume of the balance fixture, is difficult to assemble, influences the balancing precision of the blisk, particularly, the balance fixture needs to be disassembled when materials are removed in the balancing process, and seriously restricts the balancing quality and the delivery cycle of a certain machine high-pressure compressor rotor.
Disclosure of Invention
The invention aims to provide a balancing device and a balancing method of a multi-stage blisk, which are used for solving the problem of balancing of the multi-stage blisk without a supporting shaft.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a balancing unit of multistage blisk, including holding ring and balance shaft, be equipped with the balance shaft mounting hole in the middle of the holding ring, the one end of balance shaft is fixed in the balance shaft mounting hole of holding ring, the periphery of holding ring is equipped with the location platform, the last holding ring tang that is equipped with of location platform along holding ring circumference, the epaxial blisk holding ring that is equipped with of balance, the diameter of blisk holding ring is the same with the minimum inner ring diameter of treating balanced multistage blisk, the tip of blisk holding ring is the same with the minimum inner ring tip of treating balanced multistage blisk to the minimum distance of treating balanced multistage blisk tip tang, the tang of treating balanced multistage blisk is with holding ring tang fixed connection on the location platform.
Furthermore, a plurality of lightening holes are formed in a positioning table of the positioning ring.
Furthermore, the spigot of the multi-stage blisk to be balanced is fixedly connected with the spigot of the positioning ring on the positioning table through a fastening screw.
Furthermore, one end of the balance shaft is in threaded connection with the balance shaft mounting hole of the positioning ring.
Furthermore, the one end of balance shaft is pegged graft with the balance shaft mounting hole cooperation of holding ring, sets up spacing boss on the balance shaft, and the balance shaft mounting hole tip of holding ring carries out axial locking location to the balance shaft through the locking ring.
Furthermore, the locking ring is fixedly connected with the end part of the positioning ring through a screw.
Furthermore, a positioning pin hole for mounting and positioning the multistage blisk to be balanced is formed in the positioning table.
A method of balancing a multi-stage blisk comprising the steps of:
step 1), taking a balance shaft with the diameter of a positioning ring of a blisk being the same as the diameter of the minimum inner ring of a multi-stage blisk to be balanced, and fixing one end of the balance shaft in the positioning ring;
step 2), fixedly connecting the spigot of the multistage blisk to be balanced with the spigot of the positioning ring on the positioning table;
and 3) mounting the integral balancing device of the multistage blisk to be balanced on a front roller support and a rear roller support of the balancing machine, and performing dynamic balance by taking the other end of the balancing shaft and one end of the positioning ring as fulcrums.
Furthermore, after one end of the balance shaft is fixed in the positioning ring, the balance shaft and the positioning ring are dynamically balanced.
Further, before the multi-stage blisk to be balanced is installed, liquid nitrogen is adopted to freeze the spigot of the multi-stage blisk to be balanced.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a balancing device of a multistage blisk, which adopts a positioning ring and a balancing shaft to form the balancing device with one end of an open structure, a balancing shaft mounting hole is arranged in the middle of the positioning ring, one end of the balancing shaft is fixed in the balancing shaft mounting hole of the positioning ring, a positioning table is arranged on the periphery of the positioning ring, a plurality of positioning ring spigots are arranged on the positioning table along the circumferential direction of the positioning ring, a blisk positioning ring is arranged on the balancing shaft, the diameter of the blisk positioning ring is the same as the diameter of the minimum inner ring of the multistage blisk to be balanced, the minimum distance from the end part of the blisk positioning ring to the end part of the positioning table is the same as the minimum distance from the end part of the minimum inner ring of the multistage blisk to be balanced to the spigot of the end part of the multistage blisk to be balanced, the spigot of the blisk to be balanced is fixedly connected with the positioning ring spigot of the positioning table, the supporting of the multistage blisk to be balanced is used for forming a support, the multistage blisk to be balanced, the mounting dimension precision of a unilateral mounting is ensured, over-positioning is avoided, the over-positioning, the balancing device has simple structure, the device, the single side fixing, the single side is adopted for balancing shaft for balancing, the supporting balance, the balancing shaft is convenient for assembly, and the balancing device has the simple decomposition efficiency is greatly improved.
Furthermore, a plurality of lightening holes are formed in the positioning table of the positioning ring, so that the influence of the positioning ring on the multi-stage blisk to be balanced when the positioning ring is used for carrying out dynamic balance on the multi-stage blisk to be balanced is reduced, and the dynamic balance precision of the multi-stage blisk to be balanced is improved.
Further, the spigot of the multistage blisk to be balanced and the positioning ring spigot on the positioning table are fixedly connected through a fastening screw, so that the connection is stable, the balance degree is high, the rocking is not easy to generate, the stability during dynamic balance is improved, and the mounting and positioning precision is improved.
Furthermore, a connecting structure is sleeved, so that the balance shaft is convenient to disassemble and replace, and the coaxiality is high.
A balancing method of a multistage blisk is characterized in that a balancing shaft with the diameter of a locating ring of the blisk being the same as the diameter of a minimum inner ring of the multistage blisk to be balanced is taken, one end of the balancing shaft is fixed in the locating ring, assembling operation of a clamp is simplified, alignment is easy, small-amount unbalance removal is convenient, and the balancing clamp does not need to be disassembled.
Drawings
Fig. 1 is a schematic structural diagram of a balancing apparatus according to an embodiment of the present invention.
Fig. 2 is a left side view of a balancing apparatus in an embodiment of the present invention.
Fig. 3 is a schematic view of an installation structure in the practice of the present invention.
Fig. 4 is a schematic structural diagram of a three-stage and four-stage blisk.
Fig. 5 is a schematic structural view of a conventional balancing jig.
Fig. 6 is a schematic view of a conventional balancing fixture connected to a blisk.
Wherein, 1, a positioning ring; 2. a balance shaft; 3. a lock ring; 4. a screw; 5. a positioning table; 6. a leaf disc positioning ring; 7. fastening screws; 8. a positioning pin hole; 21. a first positioning ring; 22. a connecting rod; 23. a second positioning ring; 24. a hexagonal nut; 25. a hex screw; 26. a hexagon bolt.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, a balancing device for a multi-stage blisk, including a positioning ring 1 and a balancing shaft 2, a balancing shaft mounting hole is arranged in the middle of the positioning ring 1, one end of the balancing shaft 2 is fixed in the balancing shaft mounting hole of the positioning ring 1, a positioning table 5 is arranged on the periphery of the positioning ring 1, a plurality of positioning ring spigots are arranged on the positioning table 5 along the circumferential direction of the positioning ring, a blisk positioning ring 6 is arranged on the balancing shaft 2, the diameter of the blisk positioning ring 6 is the same as the diameter of the minimum inner ring of the multi-stage blisk to be balanced, the minimum distance from the end of the blisk positioning ring 6 to the end of the positioning table 5 is the same as the minimum distance from the end of the minimum inner ring of the multi-stage blisk to be balanced to the end spigot of the multi-stage blisk to be balanced, and the spigots to be balanced are fixedly connected with the positioning ring spigots on the positioning table 5. The other end of the blisk positioning ring 6, which is positioned on the balance shaft 2, is provided with a chamfer, so that the installation of a multistage blisk to be balanced is facilitated.
As shown in fig. 1, the minimum distance from the minimum inner ring end of the multi-stage blisk to be balanced to the end seam allowance of the multi-stage blisk to be balanced in the present application refers to: and the minimum distance from the end part of the minimum inner ring of the multistage blisk to be balanced to the rabbet of the end part of the multistage blisk to be balanced, which is positioned on one side of the minimum inner ring. The axis of the positioning ring spigot is balanced with the axis of the positioning ring 1.
As shown in fig. 2, a plurality of lightening holes are formed on the positioning table 5 of the positioning ring 1 to lighten the whole mass of the positioning ring 1, reduce the influence of the positioning ring 1 when the positioning ring 1 performs dynamic balance on the multistage blisk to be balanced, and improve the dynamic balance precision of the multistage blisk to be balanced.
The spigot of the multi-stage blisk to be balanced is fixedly connected with the spigot of the positioning ring on the positioning table 5 through a fastening screw 7.
The one end of balance shaft 2 and the balance shaft mounting hole threaded connection installation of holding ring 1, it is stable to connect, and the equilibrium is high, and difficult production rocks, and stability when having improved dynamic balance has improved installation positioning accuracy.
One end of the balance shaft 2 is in inserting fit with a balance shaft mounting hole of the positioning ring 1, a limiting boss is arranged on the balance shaft 2, and the end part of the balance shaft mounting hole of the positioning ring 1 axially locks and positions the balance shaft 2 through a locking ring 3; the locking ring 3 is fixedly connected with the end part of the positioning ring 1 through a screw 4. The connecting structure is sleeved, so that the balance shaft is convenient to disassemble and replace, and the coaxiality is high. And a positioning pin hole 8 for mounting and positioning the multistage blisk to be balanced is formed in the positioning table 5 and is positioned and mounted through a positioning pin.
For the diameter of the leaf disc positioning ring 6 and the minimum inner ring diameter micro-difference structure of the multistage blisk to be balanced, the backing ring structure is inserted between the leaf disc positioning ring 6 and the multistage blisk to be balanced to form a supporting and adjusting structure, the whole balancing device does not need to be detached, the structure is simple, and the positioning is accurate.
A method of balancing a multi-stage blisk comprising the steps of:
step 1), taking a balance shaft with the diameter of a positioning ring of the blisk being the same as the diameter of the minimum inner ring of the multi-stage blisk to be balanced, and fixing one end of the balance shaft in the positioning ring;
the balance shaft 2 and the positioning ring 1 which are installed are dynamically balanced, and the rotation precision of a balance device formed by the balance shaft 2 and the positioning ring 1 is ensured.
Step 2), fixedly connecting the spigot of the multistage blisk to be balanced with the spigot of the positioning ring on the positioning table 5; at this time, the smallest inner ring of the multistage blisk to be balanced is in contact with the blisk positioning ring 6, and the multistage blisk to be balanced is supported by the blisk positioning ring 6, as shown in fig. 3;
before the multistage blisk to be balanced is installed, the spigot of the multistage blisk to be balanced is frozen by adopting liquid nitrogen, so that the multistage blisk to be balanced is convenient to install and connect. Aligning the seam allowance of the multistage blisk to be balanced with the positioning ring seam allowance on the positioning table 5, inserting the positioning pin into the positioning pin hole for positioning, and then fixedly connecting through the fastening screw 7.
And 3) mounting the integral balancing device of the multistage blisk to be balanced on the front and rear roller wheel supports of the balancing machine, and performing dynamic balance by taking the other end of the balancing shaft 2 and one end of the positioning ring 1 as fulcrums.
The invention relates to a balancing device of a multistage blisk, which adopts a positioning ring and a balancing shaft to form the balancing device with one end of an opening structure, a balancing shaft mounting hole is arranged in the middle of the positioning ring, one end of the balancing shaft is fixed in the balancing shaft mounting hole of the positioning ring, a positioning table is arranged on the periphery of the positioning ring, a plurality of positioning ring rabbets are arranged on the positioning table along the circumferential direction of the positioning ring, a blisk positioning ring is arranged on the balancing shaft, the diameter of the blisk positioning ring is the same as the diameter of the minimum inner ring of the multistage blisk to be balanced, the minimum distance from the end part of the blisk positioning ring to the end part of the positioning table is the same as the minimum distance from the end part of the minimum inner ring of the multistage blisk to be balanced to the end part of the multistage blisk to be balanced, the rabbets of the blisk to be balanced are fixedly connected with the positioning ring rabbets on the positioning table, the blisk to be balanced is used for forming a support, the multistage blisk to be balanced is fixedly connected through a single-edge rabbets, the mounting dimension precision of the rabbets is ensured, the over-positioning is avoided, the over-positioning, the simple structure, the single-edge-side-fixing is adopted, the balancing shaft is used for balancing, the balance, the balancing shaft is convenient for the easy-removing, the simple disassembling clamp, the simple and the easy-removing of the balance clamp, the balance-removing process, the balance clamp, and the simple disassembling process is convenient, and the easy-removing clamp, and the easy-removing process, and the balance-removing balance clamp, and the simple-removing process is convenient for the balance clamp, and the easy-removing process, and the balance clamp. The balancing method can be popularized and applied to the balancing technological process of the multistage integral blade.
Claims (4)
1. The balancing device for the multistage blisk is characterized by comprising a positioning ring (1) and a balancing shaft (2), wherein a balancing shaft mounting hole is formed in the middle of the positioning ring (1), one end of the balancing shaft (2) is fixed in the balancing shaft mounting hole of the positioning ring (1), a positioning table (5) is arranged on the periphery of the positioning ring (1), a plurality of positioning ring spigots are arranged on the positioning table (5) along the circumferential direction of the positioning ring, a blisk positioning ring (6) is arranged on the balancing shaft (2), the diameter of the blisk positioning ring (6) is the same as the diameter of the minimum inner ring of the multistage blisk to be balanced, the minimum distance from the end part of the blisk positioning ring (6) to the end part of the positioning table (5) is the same as the minimum distance from the end part of the minimum inner ring of the multistage blisk to be balanced to the end spigot of the multistage blisk to be balanced, and the spigot of the positioning ring on the positioning table (5) is fixedly connected; one end of the balance shaft (2) is in plug fit with a balance shaft mounting hole of the positioning ring (1), a limiting boss is arranged on the balance shaft (2), and the end part of the balance shaft mounting hole of the positioning ring (1) is used for axially locking and positioning the balance shaft (2) through the locking ring (3); a plurality of lightening holes are formed in a positioning table (5) of the positioning ring (1), a spigot of a multistage blisk to be balanced and a positioning ring spigot on the positioning table (5) are fixedly connected through a fastening screw (7), one end of the balance shaft (2) is in threaded connection with a balance shaft mounting hole of the positioning ring (1) for mounting, the locking ring (3) is fixedly connected with the end of the positioning ring (1) through a screw (4), and a positioning pin hole (8) used for mounting and positioning the multistage blisk to be balanced is formed in the positioning table (5).
2. A method for balancing a multi-stage blisk, based on the balancing device of a multi-stage blisk according to claim 1, characterized in that it comprises the following steps:
step 1), taking a balance shaft with the diameter of a positioning ring of the blisk being the same as the diameter of the minimum inner ring of the multi-stage blisk to be balanced, and fixing one end of the balance shaft in the positioning ring;
step 2), fixedly connecting the spigot of the multi-stage blisk to be balanced with the spigot of the positioning ring on the positioning table;
and 3) mounting the integral balancing device of the multistage blisk to be balanced on the front and rear roller wheel supports of the balancing machine, and performing dynamic balance by taking the other end of the balancing shaft and one end of the positioning ring as a fulcrum.
3. The method of claim 2, wherein the balancing shaft and the retaining ring are dynamically balanced after the balancing shaft is secured at one end to the retaining ring.
4. The method of claim 2, wherein the spigot of the multi-stage blisk to be balanced is frozen using liquid nitrogen prior to installation of the multi-stage blisk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011052875.8A CN112179564B (en) | 2020-09-29 | 2020-09-29 | Balancing device and method for multistage blisk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011052875.8A CN112179564B (en) | 2020-09-29 | 2020-09-29 | Balancing device and method for multistage blisk |
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| Publication Number | Publication Date |
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| CN112179564A CN112179564A (en) | 2021-01-05 |
| CN112179564B true CN112179564B (en) | 2022-11-15 |
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| CN202011052875.8A Active CN112179564B (en) | 2020-09-29 | 2020-09-29 | Balancing device and method for multistage blisk |
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| CN113211339B (en) * | 2021-03-18 | 2023-03-31 | 中国人民解放军第五七一九工厂 | A frock clamp for horizontal balanced of aviation turboshaft engine single-disk |
| CN113092123B (en) * | 2021-03-25 | 2024-01-23 | 中国航发南方工业有限公司 | Method for assembling a gas generator rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100535625C (en) * | 2007-09-30 | 2009-09-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Compressor- turbine rotor subassembly dynamic balancing jig |
| CN110261036A (en) * | 2019-07-09 | 2019-09-20 | 中国航发哈尔滨东安发动机有限公司 | A kind of small aero multistage axis joint rotor dynamic balance method |
| CN111335966A (en) * | 2020-03-25 | 2020-06-26 | 中国航发哈尔滨东安发动机有限公司 | Variable blade tip size control mounting structure of high-speed engine compressor |
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