CN112378580A - Multifunctional rotor dynamic balance tool - Google Patents
Multifunctional rotor dynamic balance tool Download PDFInfo
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- CN112378580A CN112378580A CN202011226645.9A CN202011226645A CN112378580A CN 112378580 A CN112378580 A CN 112378580A CN 202011226645 A CN202011226645 A CN 202011226645A CN 112378580 A CN112378580 A CN 112378580A
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- conical
- mandrel
- impeller
- dynamic balance
- hub
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- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 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
- G01M1/14—Determining imbalance
-
- 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
- G01M1/02—Details of balancing machines or devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Testing Of Balance (AREA)
Abstract
The invention discloses a multifunctional rotor dynamic balance tool which comprises a dynamic balance support, a conical core shaft, a conical nut, a locking nut and an impeller, wherein the conical core shaft is longitudinally arranged on the dynamic balance support; the conical mandrel comprises a mandrel front section, a mandrel conical section and a mandrel rear section which are sequentially connected from front to back, and the outer circumferential surface of the mandrel conical section is a first conical surface with a large front part and a small back part; the conical nut and the locking nut are sleeved on the rear section of the mandrel of the conical mandrel in tandem, and the outer circumferential surface of the conical nut is a second conical surface with a small front part and a large rear part; the hub of the impeller is sleeved on the conical mandrel, the hub of the impeller is clamped between the conical section of the mandrel and the conical nut, the first conical surface is inserted into the front end of the hub of the impeller and matched with the front end of the hub of the impeller, and the second conical surface is inserted into the rear end of the hub of the impeller and matched with the rear end of the hub of the impeller. The multifunctional rotor dynamic balance tool is simple to machine, convenient to operate, high in universality and high in adjustment precision, and can ensure the dynamic balance precision of the impeller.
Description
Technical Field
The invention relates to a multifunctional rotor dynamic balance tool.
Background
The impeller is a high-speed rotating part, and dynamic balance check is carried out before assembly so as to reduce the unbalance of the impeller, reduce vibration caused in the working process of the impeller and improve the stability of the operation of the tool.
Referring to fig. 1, a conventional dynamic balance tool includes a dynamic balance support 1 ', a spindle 2' disposed in the middle of a rotor on the dynamic balance support 1 ', and an impeller 3' sleeved on the spindle 2 ', wherein the impeller 3' and the spindle 2 'are connected with a keyway through a key 4' and locked by a nut 5 'and a gasket 6'; due to the assembly clearance between the impeller 3 ' and the mandrel 2 ', the impeller 3 ' is in an eccentric state before dynamic balancing is carried out. After the dynamic balance and the weight removal are finished, the impeller 3' is reassembled, and due to the change of the position and the size of the assembly gap, the impeller is in an unbalanced state again. This phenomenon is particularly evident in devices with high vibration noise requirements.
If an interference fit or a transition fit is adopted between the hub of the impeller 3 ' and the spindle 2 ', great difficulty is brought to the assembly of the impeller 3 '. In addition, the dynamic balance tool is generally poor in universality, and is difficult to recycle for impellers with different hub diameters or lengths.
Therefore, in order to overcome the above disadvantages, a dynamic balance tool with higher universality and higher adjustment precision needs to be invented to ensure the dynamic balance precision of the impeller.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the multifunctional rotor dynamic balance tool which is simple to machine, convenient to operate, higher in universality and higher in adjustment precision, and can ensure the dynamic balance precision of an impeller.
The technical scheme for realizing the purpose is as follows: the utility model provides a multi-functional rotor dynamic balance frock, includes dynamic balance support, toper dabber, cone nut, lock nut and impeller, wherein:
the conical mandrel is longitudinally arranged on the dynamic balance bracket;
the conical mandrel comprises a mandrel front section, a mandrel conical section and a mandrel rear section which are sequentially connected from front to back, and the outer circumferential surface of the mandrel conical section is a first conical surface with a large front part and a small back part; the rear section of the mandrel is provided with an external thread;
the conical nut and the locking nut are sleeved on the rear section of the mandrel of the conical mandrel in tandem, and the outer circumferential surface of the conical nut is a second conical surface with a small front part and a large rear part;
the hub of the impeller is sleeved on the conical mandrel and clamped between the conical section of the mandrel and the conical nut, the first conical surface is inserted into the front end of the hub of the impeller and matched with the front end of the hub of the impeller, and the second conical surface is inserted into the rear end of the hub of the impeller and matched with the rear end of the hub of the impeller.
The multifunctional rotor dynamic balance tool is characterized in that the angles of the first conical surface and the second conical surface are 45 degrees respectively.
The multifunctional rotor dynamic balance tool is characterized in that the front end of the inner surface of the conical nut is a third conical surface with a large front part and a small rear part, and the angle of the third conical surface is 45 degrees.
The multifunctional rotor dynamic balance tool is simple to machine, convenient to operate, high in universality and high in adjustment precision, and can ensure the dynamic balance precision of the impeller.
Drawings
FIG. 1 is a schematic structural diagram of a conventional dynamic balance tool;
FIG. 2 is a structural diagram of the multifunctional rotor dynamic balance tool of the present invention;
FIG. 3 is a structural diagram of a tapered mandrel of the multifunctional rotor dynamic balance tool of the present invention;
fig. 4 is a structural diagram of a cone nut of the multifunctional rotor dynamic balance tool of the invention.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description is given with reference to the accompanying drawings:
referring to fig. 2, 3 and 4, in a preferred embodiment of the present invention, a multifunctional rotor dynamic balance tool includes a dynamic balance bracket 5, a tapered mandrel 1, a tapered nut 3, a lock nut 4 and an impeller 2.
The conical mandrel 1 is longitudinally arranged on the dynamic balance bracket 5; the conical mandrel 1 comprises a mandrel front section 11, a mandrel conical section 12 and a mandrel rear section 13 which are sequentially connected from front to back, the outer circumferential surface of the mandrel conical section 12 is a first conical surface A with a large front part and a small back part, and an external thread is arranged on the mandrel rear section 13; the cone nut 3 and the lock nut 4 are sleeved on the mandrel rear section 13 of the cone mandrel 1 in tandem, and the outer circumferential surface of the cone nut 3 is a second conical surface B with a small front part and a big back part; the front end of the inner surface of the conical nut 3 is a third conical surface C with a large front part and a small rear part, and the angle alpha of the first conical surface A, the angle beta of the second conical surface B and the angle gamma of the third conical surface C are respectively 45 degrees.
The hub of the impeller 2 is sleeved on the conical mandrel 1, the hub of the impeller 2 is clamped between the conical section 12 of the mandrel and the conical nut 3, the first conical surface A is inserted into the front end of the hub of the impeller 2 and matched with the front end of the hub of the impeller 2, and the second conical surface B is inserted into the rear end of the hub of the impeller 1 and matched with the rear end of the hub of the impeller 1. The lock nut 4 is used to tighten the taper nut 3.
According to the multifunctional rotor dynamic balance tool, the conical mandrel 1 is arranged on the mandrel in the middle of the rotor, when the multifunctional rotor dynamic balance tool is used, the rotor is placed on the two side supports of the dynamic balance support 5 through the conical mandrel 1, the precision requirement of the rotor is guaranteed, the impeller is clamped between the conical section 12 of the mandrel and the conical nut 3, the first conical surface A is inserted into the front end of the hub of the impeller 2 and matched with the front end of the hub, the second conical surface B is inserted into the rear end of the hub of the impeller 1 and matched with the rear end of the hub, eccentricity caused by installation gaps can be avoided, impellers with different diameters or lengths are suitable, the test range is wide, and the universality and the applicability are higher.
Under the normal condition, the hub chamfers of the front end surface and the rear end surface of the impeller are 45 degrees, the processing angles of the first conical surface A and the second conical surface B are horizontal included angles alpha and beta which are 45 degrees respectively, the first conical surface A and the second conical surface B are matched with each other, and the mounting stability and the torque transmission effect of the impeller are improved. The third conical surface C is parallel to the first conical surface A, so that the conical nut 3 is prevented from colliding with the first conical surface A when the length of the impeller hub is too small.
When the impeller is installed, the conical core is vertically placed, the shaft impeller is fixed with the second conical surface B of the conical nut 3 through the first conical surface A of the conical core shaft 1, and the first conical surface A and the second conical surface B are respectively matched with the front end hub chamfer and the rear end hub chamfer of the impeller. And under the effect of cone nut 3 and lock nut 4, become an organic whole with whole rotor, avoided the installation eccentricity that causes because of wheel hub and dabber clearance in the impeller installation.
The cone nut 3 is matched with the fine thread on the cone core shaft 1, and a clamping surface which is convenient for clamping and fastening a spanner is processed on the cone nut 3 so as to fix the impeller 2 on the core shaft and fasten the impeller by the locking nut 4. The core shaft is made of 20Cr and the nut is made of 45 steel. Antirust oil is coated on each part during storage, so that corrosion caused by long-term storage is prevented.
And (5) placing the clamped tool on a dynamic balancing machine bracket 5, and performing a dynamic balancing test according to requirements.
After the test is finished, the dynamic balance tool is disassembled, the locking nut 4 is firstly disassembled, the conical nut 3 is then disassembled, and then the impeller is carefully taken out.
The multifunctional rotor dynamic balance tool has the advantages that the diameter of the large end of the first conical surface A of the conical mandrel 1 is D1, the diameter of the large end of the conical nut 3 is D4, and the diameter of the small end of the conical nut is D3, and the multifunctional rotor dynamic balance tool is suitable for the diameter range of a hub impeller: d min { D1, D4} -D3; the length B1 of the impeller hub is determined by the length B2 of the external thread on the mandrel rear section 13 of the conical mandrel, and the application range is wide.
In conclusion, the multifunctional rotor dynamic balance tool is simple to machine, convenient to operate, high in universality and high in adjustment precision, and can guarantee the dynamic balance precision of the impeller.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (3)
1. The utility model provides a multi-functional rotor dynamic balance frock which characterized in that, includes dynamic balance support, toper dabber, cone nut, lock nut and impeller, wherein:
the conical mandrel is longitudinally arranged on the dynamic balance bracket;
the tapered mandrel comprises a mandrel front section, a mandrel tapered section and a mandrel rear section which are sequentially connected from front to back, the outer circumferential surface of the mandrel tapered section is a first conical surface with a large front part and a small back part, and an external thread is arranged on the mandrel rear section;
the conical nut and the locking nut are sleeved on the rear section of the mandrel of the conical mandrel in tandem, and the outer circumferential surface of the conical nut is a second conical surface with a small front part and a large rear part;
the hub of the impeller is sleeved on the conical mandrel and clamped between the conical section of the mandrel and the conical nut, the first conical surface is inserted into the front end of the hub of the impeller and matched with the front end of the hub of the impeller, and the second conical surface is inserted into the rear end of the hub of the impeller and matched with the rear end of the hub of the impeller.
2. The multifunctional rotor dynamic balance tool of claim 1, wherein the angles of the first conical surface and the second conical surface are 45 ° respectively.
3. The multifunctional rotor dynamic balance tool according to claim 1, wherein the front end of the inner surface of the cone nut is a third conical surface with a large front part and a small rear part, and the angle of the third conical surface is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226645.9A CN112378580A (en) | 2020-11-05 | 2020-11-05 | Multifunctional rotor dynamic balance tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226645.9A CN112378580A (en) | 2020-11-05 | 2020-11-05 | Multifunctional rotor dynamic balance tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112378580A true CN112378580A (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011226645.9A Pending CN112378580A (en) | 2020-11-05 | 2020-11-05 | Multifunctional rotor dynamic balance tool |
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| CN (1) | CN112378580A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117804677A (en) * | 2024-02-29 | 2024-04-02 | 中国空气动力研究与发展中心高速空气动力研究所 | Step dynamic balance method of complex compressor shafting |
-
2020
- 2020-11-05 CN CN202011226645.9A patent/CN112378580A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117804677A (en) * | 2024-02-29 | 2024-04-02 | 中国空气动力研究与发展中心高速空气动力研究所 | Step dynamic balance method of complex compressor shafting |
| CN117804677B (en) * | 2024-02-29 | 2024-05-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Step dynamic balance method of complex compressor shafting |
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