Blisk blade tip grinding method and blisk assembly

Abstract

The invention relates to a blisk blade tip grinding method and a blisk assembly. The method comprises the steps that a blisk is provided; providing a plurality of elastic constraining pieces; any two blades in the m blades of the blisk are respectively surrounded and fastened with the elastic restraining pieces, n layers of elastic restraining pieces are surrounded and fastened along the height direction of the blades, and n is greater than or equal to 1, so that each blade is elastically restrained; and the blade tip of the blade is ground. According to the method, the non-predictive or uncontrollable grinding problem can be effectively avoided, the blade grinding state is stabilized, the rotor blisk grinding qualification rate is increased, and the actual performance requirement of an engine is met.

Description

Technical Field

[0001] This disclosure relates to the field of engine assembly and manufacturing technology, and in particular to a method for grinding the tips of integral bladed disks of aero-engine compressor rotors, which can be applied to industries such as aviation and aerospace. Background Technology

[0002] Aero-engine rotor assembly blade tip grinding is a widely used process technology in various aero-engine manufacturing and maintenance companies. By rotating the rotor at high speed, the blade tips of each stage of the rotor are ground, measured, and deburred while in an outward stretching state (keeping the blades in the working position). This allows for precise control of the blade tip size and runout after the final grinding of the compressor unit rotor during the assembly stage, improving the rotor assembly and balancing quality. In turn, it ensures precise control of the rotor-stator clearance of the compressor components, ultimately improving the working efficiency of the aero-engine compressor components.

[0003] To improve engine efficiency and performance as well as reduce rotor weight, the first few stages of the compressor unit rotor often use advanced titanium alloy integral bladed disk structures. However, the current high-speed tip grinding process of titanium alloy integral bladed disk blades generally suffers from irreversible sudden loss of control and even damage to the blades. Summary of the Invention

[0004] To overcome the problems existing in the related technologies, this disclosure provides a method for grinding the blade tip of an integral bladed disk and an integral bladed disk assembly, which is used to maintain the stability of the rotor and blades as much as possible during the grinding process of the blade tip of the integral bladed disk.

[0005] According to a first aspect of the present disclosure, a method for grinding the tips of an integral bladed disk is provided, comprising: providing an integral bladed disk; providing a plurality of elastic constraint members; wherein any two blades among m blades of the integral bladed disk are respectively tightly bound around the elastic constraint members, and the elastic constraint members are tightly bound around n layers along the height direction of the blades, n≥1, so that each blade is elastically constrained; and grinding the tips of the blades.

[0006] In some embodiments, the plurality of elastic constraint members provided are rubber rings, which are fastened around any two blades in a sleeve manner; or, the plurality of elastic constraint members provided are elastic ropes, which are fastened around any two blades in a winding manner.

[0007] In some embodiments, after grinding the blade tip, the method further includes removing the elastic constraint.

[0008] In some embodiments, two adjacent blades in the m blades are tightly bound together by the elastic constraint.

[0009] In some embodiments, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an even number, the odd-numbered layers in the n-th layer are respectively secured around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-1)# and m# by the elastic constraint members, and the even-numbered layers in the n-th layer are respectively secured around 2# and 3#, 4# and 5#, 6# and 7#, ..., m# and 1# by the elastic constraint members.

[0010] In some embodiments, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively wrapped around and fastened with the elastic constraint members to 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-2)# and (m-1)#, m# and 1#. The even-numbered layers in the nth layer are respectively wrapped around and fastened with the elastic constraint members to 2# and 3#, 4# and 5#, 6# and 7#, ..., (m-1)# and m#.

[0011] In some embodiments, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. Then, each of the n layers is fastened around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-2)# and (m-1)#, and m# and 1# respectively by the elastic constraint members.

[0012] In some embodiments, the elastic constraint is fastened around one or more of the m blades.

[0013] In some embodiments, the m blades are sequentially numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an even number, the odd-numbered layers in the n-th layer are respectively wrapped and fastened around 1# and 3#, 5# and 7#, 9# and 11#, ..., (m-3)# and (m-1)#, 2# and 4#, 6# and 8#, 10# and 12#, ..., (m-2)# and m# by the elastic constraint members. The even-numbered layers in the n-th layer are respectively wrapped and fastened around 3# and 5#, 7# and 9#, 11# and 13#, ..., (m-1)# and 1#, 4# and 6#, 8# and 10#, 12# and 14#, ..., m# and 2# by the elastic constraint members.

[0014] In some embodiments, the m blades are sequentially numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the n-th layer are respectively wrapped and fastened around 1# and 3#, 5# and 7#, 9# and 11#, ..., m# and 2#, 2# and 4#, 6# and 8#, 10# and 12#, ..., (m-3)# and (m-1)# by the elastic constraint members. The even-numbered layers in the n-th layer are respectively wrapped and fastened around 3# and 5#, 7# and 9#, 11# and 13#, ..., (m-2)# and m#, 4# and 6#, 8# and 10#, 12# and 14#, ..., (m-5)# and (m-3)#, (m-1)# and 1# by the elastic constraint members.

[0015] In some embodiments, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the n-th layer are respectively secured around 1# and 3#, 3# and 5#, 5# and 7#, ..., (m-1)# and 1# by the elastic constraint members, and the even-numbered layers in the n-th layer are respectively secured around 2# and 4#, 4# and 6#, 6# and 8#, ..., m# and 2# by the elastic constraint members.

[0016] In some embodiments, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively secured around 1# and 3#, 3# and 5#, 5# and 7#, ..., (m-2)# and m# by the elastic constraint members. The even-numbered layers in the nth layer are respectively secured around 2# and 4#, 4# and 6#, 6# and 8#, ..., (m-1)# and 1#, m# and 2# by the elastic constraint members.

[0017] According to a second aspect of the present disclosure, an integral bladed disk assembly is provided, comprising: an integral bladed disk including m blades; a plurality of elastic constraint members; wherein any two of the m blades of the integral bladed disk are respectively tightly bound around the elastic constraint members, and the plurality of elastic constraint members are tightly bound around n layers along the height direction of the blades, n≥1, so that each blade is elastically constrained.

[0018] In some embodiments, the elastic constraint is detachably wrapped around any two of the m blades fastened to the blades.

[0019] In some embodiments, the elastic constraint is a rubber ring, which is fastened around any two blades in a sleeve manner; or, the elastic constraint is an elastic rope, which is fastened around any two blades in a winding manner.

[0020] In some embodiments, the elastic constraint is tightly secured around two adjacent blades among the m blades; or, the elastic constraint is tightly secured around one or more blades among the m blades.

[0021] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0022] By tightly surrounding any two blades among the m blades of the integral bladed disk with an inherent elastic constraint, each blade is elastically constrained. During high-speed blade tip grinding of the integral bladed disk, the elastic tension restoring force of the elastic constraint can suppress or eliminate the shaking, vibration, or flutter of each blade, increasing the stability of the grinding process. For blades made of titanium alloy, it can also effectively avoid unforeseen or uncontrollable grinding problems, effectively stabilize the blade grinding state, improve the pass rate of integral bladed disk grinding, and meet the actual performance requirements of the engine.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0025] Figure 1 This is a schematic diagram of an integral bladed disk according to an exemplary embodiment;

[0026] Figure 2 This is a schematic diagram illustrating an integral bladed disk with elastic constraints according to an exemplary embodiment;

[0027] Figure 3 This is a schematic diagram illustrating a method for grinding the tip of an integral bladed disk according to an exemplary embodiment;

[0028] Figure 4 This is a schematic diagram illustrating a method for grinding the tip of an integral bladed disk according to another exemplary embodiment. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] To improve engine efficiency and performance while reducing rotor weight, the first few stages of the compressor unit rotor often utilize advanced integral titanium alloy bladed disk structures. However, the current high-speed tip grinding process for integral titanium alloy bladed disks commonly suffers from irreversible sudden loss of control and even blade damage. On one hand, this leads to dimensional deviations, making it difficult to meet design requirements and ensure assembly qualification rates. It may even pose a risk of blade breakage during long-term engine use, directly impacting the engine's structural integrity, performance, and operational safety, resulting in serious consequences. On the other hand, optimizing the high-speed tip grinding process, improving the quality of tip grinding, enhancing process stability, and preventing blade damage are also crucial for advancing the development and mass production of research engine rotors.

[0031] The inventors discovered that the integral bladed disk is made of titanium alloy, which has a high coefficient of friction, generating significant grinding heat during grinding. Furthermore, the metallic elements in titanium alloy are highly chemically reactive at high temperatures, and the high temperatures generated by grinding easily react chemically with the grinding wheel. During the grinding of thin-walled titanium alloy parts, the grinding wheel surface is covered with metal particles, and the gaps between the particles are quickly filled, causing the blade tips to become blunt rapidly, making it difficult to remove material from the titanium alloy blade tip surface. Under the same conditions, the grinding ratio is only tens or even hundreds of percent that of steel parts, indicating very low grinding efficiency for titanium alloys. On the other hand, the integral bladed disk blades have a thin-walled, twisted structure, and the blades are prone to elastic deformation, leading to severe blade retraction during grinding feed. This means that while the grinding wheel is being continuously fed, the blade tips are not being removed but are instead being continuously squeezed by the grinding wheel. Only when the squeezing pressure on the blade tips reaches a critical point can the grinding wheel remove the material from the blade tips. Therefore, in actual grinding, the blades are constantly subjected to a certain amount of squeezing pressure. Furthermore, because the blade tip of the integral bladed disk is a discontinuous surface, the extrusion force exerted by the grinding wheel on the blade tip is a periodically fluctuating force related to the rotor speed. When the feed rate of the grinding wheel matches the speed at which the material is removed from the blade tip, this periodically fluctuating extrusion force is stable. However, once the feed rate of the grinding wheel does not match the speed at which the material is removed from the blade tip, this fluctuating extrusion force will cause the rotor to vibrate, and may even cause the blade to flutter. The vibrating blade tip will suddenly lengthen or shorten briefly, which will lead to the blade tip being unexpectedly or uncontrollably shortened, resulting in out-of-tolerance outer diameter and runout, failing to meet requirements.

[0032] In view of this, this disclosure provides a method for grinding the tip of an integral bladed disk, see [link to relevant documentation]. Figures 1-4 As shown, it includes steps S11, S12, S13, and S14.

[0033] In step S11, an integral bladed disk is provided;

[0034] The integral bladed disk comprises m circumferentially distributed blades 10, where m can be an odd or even number. The blades 10 can be made of titanium alloy.

[0035] In step S12, a plurality of elastic constraint members 20 are provided;

[0036] The elastic constraint 20 is made of elastic material. It deforms under tension and has a certain elastic tension recovery force. The blade is constrained by this elastic tension recovery force and can recover its deformation when the tension is released.

[0037] In step S13, any two blades of the m blades 10 of the overall bladed disk are respectively surrounded by a tight elastic constraint member 20, and multiple elastic constraint members 20 are surrounded by a tight n-layer along the height direction H of the blade, where n≥1, so that each blade is elastically constrained by each blade.

[0038] Any two blades can be adjacent blades or span one or more blades. "Any two blades respectively surrounding the tightly bound elastic constraint member 20" means that every two blades are constrained by the elastic tension restoring force of one elastic constraint member 20. In other words, one elastic constraint member 20 is in elastic contact with two blades, and this elastic constraint member 20 has an elastic constraint force on each of the two blades in the direction of each other. Multiple elastic constraint members 20 are tightly bound together in one or more layers along the height direction H of the blade. The height direction H of the blade is from the blade root to the blade tip.

[0039] In step S14, the blade tip is ground.

[0040] The blade tip can be ground while the entire bladed disk is rotating at high speed.

[0041] This disclosure describes a method that, by tightly surrounding any two blades 10 of the m blades 10 of an integral bladed disk with an inherent elastic constraint 20, each blade is elastically constrained. During high-speed blade tip grinding of the integral bladed disk, the elastic tension restoring force of the elastic constraint 20 can suppress or eliminate the shaking, vibration, or trembling of each blade, thereby increasing the stability of the grinding process. For blades made of titanium alloy materials, it can also effectively avoid unforeseen or uncontrollable grinding problems, effectively stabilize the blade grinding state, improve the pass rate of integral bladed disk grinding, and meet the actual performance requirements of the engine.

[0042] In some embodiments, after step S14, the method may further include: step S15, removing the elastic constraint 20.

[0043] After the blade tip grinding is completed, the elastic constraint 20 is removed. Since the deformation under tension has a certain elastic tension recovery force, the blade is constrained by this elastic tension recovery force. The deformation can be restored when the tension is released. Therefore, it can be reused multiple times, improving assembly efficiency and reducing development costs.

[0044] In some embodiments, the provided multiple elastic constraint elements are rubber rings, which are sleeved and fastened around any two blades.

[0045] The elastic restraint can be made from commercially available rubber rings, such as elastic bands. These rings are ring-shaped and can be directly fitted onto the two blades, making the process simple, cost-effective, and without damaging the blades. The specifications of the rubber rings can be determined based on the overall shape of the bladed disk.

[0046] In some embodiments, the provided multiple elastic restraints are elastic ropes, which are wound around and secured to any two blades. The elastic ropes are not limited by the overall shape of the bladed disk, reducing design costs.

[0047] In some embodiments, in step S13, two adjacent blades among the m blades surround a tight, inherently elastic constraint.

[0048] In some examples, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an even number, the odd-numbered layers in the n-layer are secured by elastic constraints around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-1)# and m# respectively. The even-numbered layers in the n-layer are secured by elastic constraints around 2# and 3#, 4# and 5#, 6# and 7#, ..., m# and 1# respectively.

[0049] In other examples, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the n-th layer are tightly bound around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-2)# and (m-1)#, m# and 1# respectively by the elastic constraint members. The even-numbered layers in the n-th layer are tightly bound around 2# and 3#, 4# and 5#, 6# and 7#, ..., (m-1)# and m# respectively by the elastic constraint members.

[0050] The aforementioned elastic constraint tightly surrounds each pair of adjacent blades, resulting in more uniform stress distribution and improved stability across the blades. n layers of elastic constraint are formed along the height of the blades, with different constraint methods for the odd-numbered and even-numbered layers. This ensures that each pair of adjacent blades is subjected not only to elastic constraint forces towards each other but also to elastic constraint forces away from each other, further enhancing the stability of each blade.

[0051] In some other examples, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. Then, each of the n layers is tightly secured around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-2)# and (m-1)#, and m# and 1# respectively by elastic constraints.

[0052] In some embodiments, a fastening elastic constraint is surrounded across one or more blades in m blades.

[0053] In some examples, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an even number, the odd-numbered layers in the n-th layer are respectively wrapped and fastened around 1# and 3#, 5# and 7#, 9# and 11#, ..., (m-3)# and (m-1)#, 2# and 4#, 6# and 8#, 10# and 12#, ..., (m-2)# and m# by the elastic constraint members. The even-numbered layers in the n-th layer are respectively wrapped and fastened around 3# and 5#, 7# and 9#, 11# and 13#, ..., (m-1)# and 1#, 4# and 6#, 8# and 10#, 12# and 14#, ..., m# and 2# by the elastic constraint members.

[0054] In other examples, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively wrapped and fastened around 1# and 3#, 5# and 7#, 9# and 11#, ..., m# and 2#, 2# and 4#, 6# and 8#, 10# and 12#, ..., (m-3)# and (m-1)# by the elastic constraint members. The even-numbered layers in the nth layer are respectively wrapped and fastened around 3# and 5#, 7# and 9#, 11# and 13#, ..., (m-2)# and m#, 4# and 6#, 8# and 10#, 12# and 14#, ..., (m-5)# and (m-3)#, (m-1)# and 1# by the elastic constraint members.

[0055] In some other examples, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively secured around 1# and 3#, 3# and 5#, 5# and 7#, ..., (m-1)# and 1# by the elastic constraint members. The even-numbered layers in the nth layer are respectively secured around 2# and 4#, 4# and 6#, 6# and 8#, ..., m# and 2# by the elastic constraint members.

[0056] In some embodiments, the m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively secured around 1# and 3#, 3# and 5#, 5# and 7#, ..., (m-2)# and m# by the elastic constraint members. The even-numbered layers in the nth layer are respectively secured around 2# and 4#, 4# and 6#, 6# and 8#, ..., (m-1)# and 1#, m# and 2# by the elastic constraint members.

[0057] The above-mentioned elastic constraint is fastened around one or more blades in m blades. Compared with two adjacent blades, the elastic tension and restoring force of the elastic constraint increases due to the increased spacing between the blades. This maintains the stability of the blades, reduces the risk of the elastic constraint being thrown out during high-speed grinding, and improves grinding reliability.

[0058] Based on the same inventive concept, this disclosure also provides an integral bladed disk assembly, including: an integral bladed disk and a plurality of elastic constraint members 20. The integral bladed disk includes m blades 10. Any two of the m blades of the integral bladed disk are respectively tightly bound around the elastic constraint members, and the plurality of elastic constraint members are tightly bound around n layers along the height direction of the blades, where n≥1, so that each blade is elastically constrained.

[0059] This disclosure describes a method that, by tightly surrounding any two blades 10 of the m blades 10 of an integral bladed disk with an inherent elastic constraint 20, each blade is elastically constrained. During high-speed blade tip grinding of the integral bladed disk, the elastic tension restoring force of the elastic constraint 20 can suppress or eliminate the shaking, vibration, or trembling of each blade, thereby increasing the stability of the grinding process. For blades made of titanium alloy materials, it can also effectively avoid unforeseen or uncontrollable grinding problems, effectively stabilize the blade grinding state, improve the pass rate of integral bladed disk grinding, and meet the actual performance requirements of the engine.

[0060] In some embodiments, the elastic constraint can be detachably wrapped around any two of the m blades fastened to it.

[0061] After the blade tip grinding is completed, the elastic constraint 20 is removed. Since the deformation under tension has a certain elastic tension recovery force, the blade is constrained by this elastic tension recovery force. The deformation can be restored when the tension is released. Therefore, the elastic constraint can be detachably fastened around any two blades among the m blades, and can be reused multiple times, improving assembly efficiency and reducing development costs.

[0062] In some embodiments, the elastic constraint is a rubber ring, which is fastened around any two blades in a sleeve manner.

[0063] The elastic restraint can be made from commercially available rubber rings, such as elastic bands. These rings are ring-shaped and can be directly fitted onto the two blades, making the process simple, cost-effective, and without damaging the blades. The specifications of the rubber rings can be determined based on the overall shape of the bladed disk.

[0064] In some embodiments, the elastic constraint is an elastic rope that is wound around and secured to any two blades.

[0065] The elastic rope is not limited by the overall shape of the impeller, reducing design costs.

[0066] In some embodiments, the elastic constraint is tightly secured around two adjacent blades among the m blades; or, the elastic constraint is tightly secured around one or more blades among the m blades.

[0067] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0068] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0069] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0070] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0071] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for grinding the tip of an integral bladed disk, wherein, include: Provides integrated bladed discs; Provides multiple flexible constraint components; Any two blades out of the m blades of the integral bladed disk are respectively tightly surrounded by the elastic constraint, and the elastic constraint is tightly surrounded by n layers along the height direction of the blade, n≥1, so that each blade is elastically constrained. The blade tip is ground.

2. The method for grinding the tip of an integral bladed disk according to claim 1, wherein, The provided elastic constraint elements are rubber rings, which are fastened around any two blades in a sleeve-like manner; or, The provided elastic constraint elements are elastic ropes, which are wrapped around and fastened to any two blades in a winding manner.

3. The method for grinding the tip of an integral bladed disk according to claim 1, wherein, After grinding the blade tip, the method further includes: Remove the elastic constraint.

4. The method for grinding the tip of an integral bladed disk according to any one of claims 1-3, wherein, Two adjacent blades in the m blades are tightly bound together by the elastic constraint.

5. The method for grinding the tip of an integral bladed disk according to claim 4, wherein, The m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an even number, the odd-numbered layers in the n-th layer are respectively secured around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-1)# and m# by the elastic constraint members, and the even-numbered layers in the n-th layer are respectively secured around 2# and 3#, 4# and 5#, 6# and 7#, ..., m# and 1# by the elastic constraint members.

6. The method for grinding the tip of an integral bladed disk according to claim 4, wherein, The m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively wrapped and fastened around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-2)# and (m-1)#, m# and 1# by the elastic constraint members. The even-numbered layers in the nth layer are respectively wrapped and fastened around 2# and 3#, 4# and 5#, 6# and 7#, ..., (m-1)# and m# by the elastic constraint members.

7. The method for grinding the tip of an integral bladed disk according to claim 4, wherein, The m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. Then, each of the n layers is tightly secured around 1# and 2#, 3# and 4#, 5# and 6#, ..., (m-2)# and (m-1)#, and m# and 1# respectively by the elastic constraint members.

8. The method for grinding the tip of an integral bladed disk according to any one of claims 1-3, wherein, The elastic constraint is fastened around one or more of the m blades.

9. The method for grinding the tip of an integral bladed disk according to claim 8, wherein, The m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an even number, the odd-numbered layers in the nth layer are respectively wrapped and fastened around 1# and 3#, 5# and 7#, 9# and 11#, ..., (m-3)# and (m-1)#, 2# and 4#, 6# and 8#, 10# and 12#, ..., (m-2)# and m# by the elastic constraint members. The even-numbered layers in the nth layer are respectively wrapped and fastened around 3# and 5#, 7# and 9#, 11# and 13#, ..., (m-1)# and 1#, 4# and 6#, 8# and 10#, 12# and 14#, ..., m# and 2# by the elastic constraint members.

10. The method for grinding the tip of an integral bladed disk according to claim 8, wherein, The m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively wrapped and fastened around 1# and 3#, 5# and 7#, 9# and 11#, ..., m# and 2#, 2# and 4#, 6# and 8#, 10# and 12#, ..., (m-3)# and (m-1)# by the elastic constraint members. The even-numbered layers in the nth layer are respectively wrapped and fastened around 3# and 5#, 7# and 9#, 11# and 13#, ..., (m-2)# and m#, 4# and 6#, 8# and 10#, 12# and 14#, ..., (m-5)# and (m-3)#, (m-1)# and 1# by the elastic constraint members.

11. The method for grinding the tip of an integral bladed disk according to claim 8, wherein, The m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively secured around 1# and 3#, 3# and 5#, 5# and 7#, ..., (m-1)# and 1# by the elastic constraint members. The even-numbered layers in the nth layer are respectively secured around 2# and 4#, 4# and 6#, 6# and 8#, ..., m# and 2# by the elastic constraint members.

12. The method for grinding the tip of an integral bladed disk according to claim 8, wherein, The m blades are numbered 1#, 2#, 3#, 4#, ..., m# in the circumferential direction of the overall bladed disk. If m is an odd number, the odd-numbered layers in the nth layer are respectively secured around 1# and 3#, 3# and 5#, 5# and 7#, ..., (m-2)# and m# by the elastic constraint members. The even-numbered layers in the nth layer are respectively secured around 2# and 4#, 4# and 6#, 6# and 8#, ..., (m-1)# and 1#, m# and 2# by the elastic constraint members.

13. An integral bladed disk assembly, wherein, include: An integral bladed disk, wherein the integral bladed disk comprises m blades; Multiple elastic constraint components; In this embodiment, any two of the m blades of the integral bladed disk are respectively surrounded and tightly bound by the elastic constraint member, and a plurality of the elastic constraint members are surrounded and tightly bound by n layers along the height direction of the blade, where n≥1, so that each blade is elastically constrained.

14. The integral bladed disk assembly according to claim 13, wherein, The elastic constraint is detachably wrapped around any two of the m blades that are fastened to it.

15. The integral bladed disk assembly according to claim 13, wherein, The elastic constraint element is a rubber ring, which is fastened to any two blades by means of a sleeve; or... The elastic constraint is an elastic rope, which is wrapped around and fastened to any two blades in a winding manner.

16. The integral bladed disk assembly according to any one of claims 13-15, wherein, Two adjacent blades in the m blades are tightly surrounded by the elastic constraint; or, The elastic constraint is fastened around one or more of the m blades.

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