CN103134639B - Super-miniature rotor dynamic balancing measuring method and equipment for complementing the same - Google Patents
Super-miniature rotor dynamic balancing measuring method and equipment for complementing the same Download PDFInfo
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- CN103134639B CN103134639B CN201310038844.0A CN201310038844A CN103134639B CN 103134639 B CN103134639 B CN 103134639B CN 201310038844 A CN201310038844 A CN 201310038844A CN 103134639 B CN103134639 B CN 103134639B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000013016 damping Methods 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 10
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- 238000004458 analytical method Methods 0.000 claims description 6
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- 238000009434 installation Methods 0.000 description 3
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Abstract
The invention relates to the technical fields of machinery dynamics and vibration measurements, in particular to a super-miniature rotor dynamic balancing measuring method and equipment for complementing the super-miniature rotor dynamic balancing measuring method. The method includes the following steps: (1) arranging a damping device on a bearing device, wherein the damping device is a single freedom degree damping device, and arranging the bearing device at the position of a resonance point of a dynamic balancer through a bearing piece; (2) arranging a to-be-tested super-miniature rotor on the bearing device; (3) driving and connecting a motor for the to-be-tested super-miniature rotor; (4) starting the dynamic balancer and the motor; (5) adjusting a damping coefficient of the damping device, stiffness of the bearing device, and balance revolving speed of the to-be-tested super-miniature rotor so as to enable resonance frequency and amplitude of the to-be-tested super-miniature rotor to reach a set value; (6) measuring a vibration signal of the to-be-tested super-miniature rotor and then after the vibration signal is amplified, analyzed and processed, transmitting the vibration signal to a computer; and (7) obtaining a measured result processed by the computer. The method and the equipment can achieve measurement to dynamic balance of the super-miniature rotor under the lower speed.
Description
Technical field
The present invention relates to mechanical kinetics and vibration test technology field, the equipment of especially a kind of superminiature rotor dynamic balancing measuring method and enforcement the method.
Background technology
Superminiature rotor is because its quality little (being less than 10g), size little (diameter is less than 10mm), length-diameter ratio are close to 1, and its transient equilibrium is very difficult.Because working speed is high, high to aequum accuracy requirement, the dynamic balance method of existing soft underprop and hard bearing all invalidly cannot realize the measurement of the amount of unbalance of superminiature rotor.
For soft-bearing dynamic balance machine, balancing speed, more than the resonance point of system, requires that balancing speed is high.Except easy damaged rotor bearing surface, also can cause the autovibration of system because of the change of friction factor.Because amount of unbalance is minimum, by the impact of the factor such as frame, belt gear, signal to noise ratio (S/N ratio) is low, is difficult to be separated unbalanced signal.
For hard bearing dynamic balancing machine, balancing speed, below the resonance point of system, requires that balancing speed is low.Because balancing speed is low, the signal gets too small that amount of unbalance causes, signal to noise ratio (S/N ratio) is little, is difficult to equally be separated unbalanced signal.
In sum, market also do not have the device that can carry out dynamic balancing measurement to superminiature rotor at present.
Summary of the invention
The object of the present invention is to provide a kind of superminiature rotor dynamic balancing measuring method, to realize the dynamically balanced measurement to superminiature rotor under lower rotating speed.
Meanwhile, the present invention also aims to provide the superminiature rotor dynamic balancing measuring equipment implementing said method.
In order to solve the problem, superminiature rotor dynamic balancing measuring method of the present invention is by the following technical solutions: superminiature rotor dynamic balancing measuring method, comprise the following steps: 1) damping unit is set on the fulcrum arrangement for supporting superminiature rotor to be measured, that fulcrum arrangement comprises rest pad and is located at rest pad bottom, that rigidity is adjustable supporting member, damping unit is single-degree-of-freedom damping unit, described fulcrum arrangement is placed in the resonance point place of dynamic balancing machine by supporting member; 2) superminiature rotor to be measured is placed on described fulcrum arrangement; 3) for superminiature rotor to be measured is in transmission connection motor; 4) dynamic balancing machine and motor is opened; 5) adjust the ratio of damping of damping unit and adjust the rigidity of fulcrum arrangement by adjustment supporting member, being adjusted the balancing speed of superminiature rotor to be measured by motor, make the resonant frequency of superminiature rotor to be measured and amplitude reach setting value; 6) measure the vibration signal of superminiature rotor to be measured by vibration transducer and by data acquisition module, described vibration signal amplified, be uploaded to computing machine after treatment and analysis; 7) draw measurement result by computer disposal, its computation process is as follows:
Wherein Fe is the centrifugal force of superminiature rotor to be measured, and e is the eccentric throw of superminiature rotor to be measured, and ω is the angular velocity of rotor, and n is the rotating speed of rotor;
Wherein X0 is the radial vibration displacement of superminiature rotor to be measured at two ends place, k is the rigidity of fulcrum arrangement, and M is the gross mass of fulcrum arrangement and damping unit, and m is the quality of superminiature rotor to be measured, c is the ratio of damping of damping unit, then the vibration acceleration between superminiature two ends of rotor to be measured:
Described motor is connected with frequency converter, and frequency converter is connected with data acquisition module, and data acquisition module is also connected with the speed probe of the rotating speed measuring superminiature rotor to be measured.
Described rest pad is V-shaped, and damping unit is the oil damper being located at fulcrum arrangement both sides.
Described supporting member is support spring.
Described vibration transducer is contactless vibration transducer.
Superminiature rotor dynamic balancing measuring equipment of the present invention is by the following technical solutions: for implementing the equipment of above-mentioned method, comprise dynamic balancing machine, dynamic balancing machine comprises frame and is located at the fulcrum arrangement in frame, fulcrum arrangement comprises rest pad and is located at rest pad bottom, the supporting member that rigidity is adjustable, fulcrum arrangement is positioned at the resonance point place of dynamic balancing machine and this fulcrum arrangement is provided with single-degree-of-freedom damping unit, frame is provided with for providing the motor of rotary power and the vibration transducer for the vibration signal of measuring superminiature rotor to be measured for superminiature rotor to be measured, vibration transducer is connected with for amplifying, vibration signal described in treatment and analysis is also uploaded to the data acquisition module of corresponding computing machine.
Described motor is connected with frequency converter, and frequency converter is connected with data acquisition module, and data acquisition module is also connected with the speed probe of the rotating speed measuring superminiature rotor to be measured.
Described motor is connected with frequency converter, and described rest pad is V-shaped, and damping unit is the oil damper being located at fulcrum arrangement both sides.
Described supporting member is support spring.
Described vibration transducer is contactless vibration transducer.
Because superminiature rotor dynamic balancing measuring method of the present invention is placed near the resonance point of dynamic balancing machine by superminiature rotor to be measured, and on the fulcrum arrangement for supporting superminiature rotor to be measured, be provided with described damping unit, by the amplification factor during adjustment System resonance of adjustment damping size, fulcrum arrangement is made to become the mechanical amplifier of superminiature rotor unbalance value to be measured, the measuring system vibration caused by the small amount of unbalance of superminiature rotor to be measured is amplified, thus reduction dynamic balancing machine, the impact on unbalanced signal such as motor and data acquisition environment factor, thus the signal to noise ratio (S/N ratio) of unbalanced signal is improved from source.Owing to there being the existence of above-mentioned mechan-amplifier effect, the balancing speed of reduction superminiature rotor to be measured when testing that therefore can be suitable, thus achieve the dynamically balanced measurement to superminiature rotor under lower rotating speed.
Further, described frequency converter achieves and regulates the convenient of rotating speed of motor speed and even superminiature rotor to be measured; Fulcrum arrangement lower end is provided with mounting hole, can facilitate the installation of damping unit; Two fulcrum arrangements are adopted to pass through adjustment distance therebetween to adapt to the superminiature rotor to be measured of different size; Adopt contactless vibration transducer to reduce the additional mass of dynamic-balance measuring system, can measuring accuracy be improved, ensure that fulcrum arrangement dynamic perfromance is stablized.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment 1 of superminiature rotor dynamic balancing measuring method of the present invention;
Fig. 2 is the scheme of installation of superminiature rotor to be measured;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is single-freedom vibration system amplitude-versus-frequency curve and phase-frequency characteristic curve;
Fig. 5 is the curve map of the one group of data measured according to the embodiment 1 of superminiature rotor dynamic balancing measuring method;
Fig. 6 is the structure principle chart of the embodiment 1 of superminiature rotor dynamic balancing measuring equipment of the present invention;
Fig. 7 is the scheme of installation of superminiature rotor to be measured;
Fig. 8 is the vertical view of Fig. 7.
Embodiment
The embodiment 1 of superminiature rotor dynamic balancing measuring method of the present invention, as Figure 1-5, comprise the following steps: the damping unit that 1) single-degree-of-freedom is set on the fulcrum arrangement for supporting superminiature rotor to be measured, described fulcrum arrangement is placed in the resonance point place of dynamic balancing machine, in the present embodiment, fulcrum arrangement comprises V-shaped rest pad 11 and is located at the supporting member 12 of rest pad bottom, the rigidity of supporting member 12 is adjustable, in the present embodiment, what supporting member 12 adopted is thin slice soft spring, fulcrum arrangement has two, two fulcrum arrangements set gradually along the axis of superminiature rotor 13 to be measured, in the present embodiment, damping unit adopts oil damper 14, damping unit lays respectively at the both sides place of fulcrum arrangement, in Fig. 2-3, fulcrum arrangement and damping unit are reduced to two springs, thus the one end can regarding spring as is fixed, the other end connects superminiature rotor 13 to be measured, 2) superminiature rotor 13 to be measured is placed on fulcrum arrangement, as shown in Figure 3, the superminiature rotor 13 to be measured in the present embodiment by frame on two fulcrum arrangements, 3) for superminiature rotor 13 to be measured is in transmission connection motor 15, motor 15 is connected with frequency converter 16, frequency converter 16 is in order to control the rotating speed of motor 15, motor 15 by belt 17 for superminiature rotor 13 to be measured provides rotary power, when motor 15 works, measured the rotating speed of superminiature rotor 13 to be measured by a speed probe 18, 4) dynamic balancing machine and motor is opened, 5) rigidity of fulcrum arrangement and the ratio of damping of damping unit is adjusted, wherein by realizing the stiffness tuning of supporting member 12 to the adjustment of the rigidity of fulcrum arrangement, adjusted the balancing speed of superminiature rotor 13 to be measured by motor, make the resonant frequency of superminiature rotor 13 to be measured and amplitude reach setting value, 6) measure the vibration signal of superminiature rotor 13 to be measured by vibration transducer 21 and by data acquisition module 19, described vibration signal amplified, be uploaded to computing machine 20 after treatment and analysis, wherein frequency converter 16 and speed probe 18 are also connected with this data acquisition module 19, in the present embodiment, vibration transducer 21 adopts contactless vibration transducer, is specially laser feeler, 7) draw measurement result by computer disposal, its computation process is as follows:
Wherein Fe is the centrifugal force of superminiature rotor to be measured, and e is the eccentric throw of superminiature rotor to be measured, and ω is the angular velocity of rotor, and n is the rotating speed of rotor;
Wherein X
0for superminiature rotor to be measured vibration displacement between the ends, k is the rigidity of fulcrum arrangement, and M is the gross mass of fulcrum arrangement, and m is the quality of superminiature rotor to be measured, and c is the ratio of damping of damping unit, then the vibration acceleration at superminiature two ends of rotor place to be measured:
The typical curve of single-freedom vibration system is shown in Fig. 4.Rotor and v-shaped bearing device are exactly a typical single-freedom vibration system, and the vibration of rotor meets the vibration trend shown in Fig. 4, visible according to figure, and in the left-half of curve, oscillating curve amplitude of variation is larger, have an obvious resonance region to occur.Adopt resonant method, be placed in resonance region by the balancing speed of equilibrator exactly, adjustment damper makes the value of the dynamic magnifier β of system be 1 ~ 2, and now the sensitivity of system is higher, avoided the significantly reduction of the rear system sensitivity of resonance, also ensured that system can steady operation simultaneously.
When the balancing speed of superminiature rotor to be measured is near resonance point, its amplitude is the function of damping and balancing speed.Control balancing speed and damping just can realize the Measurement accuracy of amount of unbalance.Therefore, select the v-shaped bearing device with appropriate mass and rigidity, make fulcrum arrangement have suitable resonant frequency and ratio of damping.The sensitivity of rotor dynamic balancing detection system then just can be adjusted by adjustment balancing speed.
It is the curve map of the one group of data measured according to the embodiment 1 of superminiature rotor dynamic balancing measuring method shown in Fig. 5, as shown in the figure, article two, one in curve is the curve (not increasing the weight of) obtained after adopting method of the present invention to measure standard superminiature rotor (not having amount of unbalance in theory), another carries out increasing the weight of and make it have carrying out measuring the curve (increasing the weight of) obtained after aequum scarcely at standard superminiature rotor, can see out from figure, when rotating speed is between 1000-1300, just the amount of unbalance drawing standard superminiature rotor can clearly be measured.
The embodiment 1 of superminiature rotor dynamic balancing measuring equipment of the present invention, as shown in figs 6-8, comprise dynamic balancing machine, the fulcrum arrangement that dynamic balancing machine comprises frame 51 and is located in frame 51, in the present embodiment, fulcrum arrangement comprises V-shaped rest pad 52 and is located at the supporting member 53 of rest pad bottom, the rigidity of supporting member 53 can regulate, in the present embodiment, supporting member 53 adopts support spring, fulcrum arrangement has two, two fulcrum arrangements set gradually along the axis of superminiature rotor 54 to be measured, fulcrum arrangement is positioned at the resonance point place of dynamic balancing machine and this fulcrum arrangement is provided with the damping unit of single-degree-of-freedom, damping unit adopts oil damper 55, damping unit lays respectively at the both sides place of fulcrum arrangement, frame 51 is also provided with for providing the motor 56 of rotary power and the vibration transducer 57 for the vibration signal of measuring superminiature rotor 54 to be measured for superminiature rotor 54 to be measured, motor 56 is connected with frequency converter 58, frequency converter 58 is in order to control the rotating speed of motor 56, motor 56 operationally by belt 59 for superminiature rotor 54 to be measured provides rotary power, in the present embodiment, vibration transducer 57 adopts contactless vibration transducer, be specially laser feeler, vibration transducer 57 is connected with for amplifying, vibration signal described in treatment and analysis is also uploaded to the data acquisition module 61 of corresponding computing machine 60, frame 51 is also provided with the speed probe 62 of the rotating speed for measuring superminiature rotor to be measured, frequency converter 58 and speed probe 62 are also connected with data acquisition module.
Claims (10)
1. superminiature rotor dynamic balancing measuring method, it is characterized in that, comprise the following steps: 1) damping unit is set on the fulcrum arrangement for supporting superminiature rotor to be measured, that fulcrum arrangement comprises rest pad and is located at rest pad bottom, that rigidity is adjustable supporting member, damping unit is single-degree-of-freedom damping unit, described fulcrum arrangement is placed in the resonance point place of dynamic balancing machine by supporting member, by the amplification factor during adjustment System resonance of adjustment damping size, fulcrum arrangement is made to become the mechanical amplifier of superminiature rotor unbalance value to be measured; 2) superminiature rotor to be measured is placed on described fulcrum arrangement; 3) for superminiature rotor to be measured is in transmission connection motor; 4) dynamic balancing machine and motor is opened; 5) adjust the ratio of damping of damping unit and adjust the rigidity of fulcrum arrangement by adjustment supporting member, being adjusted the balancing speed of superminiature rotor to be measured by motor, make the resonant frequency of superminiature rotor to be measured and amplitude reach setting value; 6) measure the vibration signal of superminiature rotor to be measured by vibration transducer and by data acquisition module, described vibration signal amplified, be uploaded to computing machine after treatment and analysis; 7) draw measurement result by computer disposal, its computation process is as follows:
Wherein F
efor the centrifugal force of superminiature rotor to be measured, e is the eccentric throw of superminiature rotor to be measured, and ω is the angular velocity of rotor, and n is the rotating speed of rotor;
Wherein X
0for superminiature rotor to be measured is in the radial vibration displacement at two ends place, k is the rigidity of fulcrum arrangement, and M is the gross mass of fulcrum arrangement and damping unit, and m is the quality of superminiature rotor to be measured, c is the ratio of damping of damping unit, then the vibration acceleration between superminiature two ends of rotor to be measured:
2. superminiature rotor dynamic balancing measuring method according to claim 1, it is characterized in that, described motor is connected with frequency converter, and frequency converter is connected with data acquisition module, and data acquisition module is also connected with the speed probe of the rotating speed measuring superminiature rotor to be measured.
3. superminiature rotor dynamic balancing measuring method according to claim 1, it is characterized in that, described rest pad is V-shaped, and damping unit is the oil damper being located at fulcrum arrangement both sides.
4. superminiature rotor dynamic balancing measuring method according to claim 3, is characterized in that, described supporting member is support spring.
5. superminiature rotor dynamic balancing measuring method according to claim 1, is characterized in that, described vibration transducer is contactless vibration transducer.
6. for implementing the equipment of the method for claim 1, it is characterized in that, comprise dynamic balancing machine, dynamic balancing machine comprises frame and is located at the fulcrum arrangement in frame, fulcrum arrangement comprises rest pad and is located at rest pad bottom, the supporting member that rigidity is adjustable, fulcrum arrangement is positioned at the resonance point place of dynamic balancing machine and this fulcrum arrangement is provided with single-degree-of-freedom damping unit, frame is provided with for providing the motor of rotary power and the vibration transducer for the vibration signal of measuring superminiature rotor to be measured for superminiature rotor to be measured, vibration transducer is connected with for amplifying, vibration signal described in treatment and analysis is also uploaded to the data acquisition module of corresponding computing machine, by the amplification factor during adjustment System resonance of adjustment damping size, fulcrum arrangement is made to become the mechanical amplifier of superminiature rotor unbalance value to be measured.
7. equipment according to claim 6, is characterized in that, described motor is connected with frequency converter, and frequency converter is connected with data acquisition module, and data acquisition module is also connected with the speed probe of the rotating speed measuring superminiature rotor to be measured.
8. equipment according to claim 6, is characterized in that, described motor is connected with frequency converter, and described rest pad is V-shaped, and damping unit is the oil damper being located at fulcrum arrangement both sides.
9. equipment according to claim 8, is characterized in that, described supporting member is support spring.
10. equipment according to claim 6, is characterized in that, described vibration transducer is contactless vibration transducer.
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| CN201310038844.0A CN103134639B (en) | 2013-01-31 | 2013-01-31 | Super-miniature rotor dynamic balancing measuring method and equipment for complementing the same |
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| CN201310038844.0A CN103134639B (en) | 2013-01-31 | 2013-01-31 | Super-miniature rotor dynamic balancing measuring method and equipment for complementing the same |
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| CN103134639B true CN103134639B (en) | 2015-07-15 |
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| CN103759892A (en) * | 2014-01-27 | 2014-04-30 | 杭州集智机电股份有限公司 | Soft supporting balance test machine with oil mixing damping mechanisms |
| CN105021350B (en) * | 2015-08-06 | 2017-11-24 | 华北电力大学（保定） | A kind of rotor of steam turbo generator mass unbalance appraisal procedure |
| CN105571783B (en) * | 2016-01-12 | 2018-01-02 | 西安电子科技大学 | A kind of rotor high accuracy dynamic poise device based on differential type capacitance sensing principle |
| CN106953482B (en) * | 2017-05-12 | 2019-01-22 | 中国石油大学(华东) | The control device and phasing method of full-automatic dynamic balancing transfer matic rotor |
| CN108627301A (en) * | 2018-05-31 | 2018-10-09 | 东北大学 | A kind of adjustable structure changes rotor dynamic balancing Online Transaction Processing and test method |
| CN108956012B (en) * | 2018-10-10 | 2020-04-24 | 安徽正华电气有限公司 | Dynamic balance device for detecting motor fan blades in batches |
| CN109374209B (en) * | 2018-12-19 | 2024-02-09 | 华电电力科学研究院有限公司 | Low-speed dynamic balance table for rotor and critical rotation speed prediction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058429A (en) * | 1990-02-13 | 1991-10-22 | Gebruder Hofmann Gmbh & Co. Kg Maschinenfabrik | Apparatus for measuring an unbalance of a rotary member |
| CN1566914A (en) * | 2003-06-27 | 2005-01-19 | 盛德恩 | Dynamic balancing measuring method and high-frequency ratio hard support dynamic balancing arrangement |
| CN101694411A (en) * | 2009-10-14 | 2010-04-14 | 北京青云精益检测设备有限公司 | Dynamic balance test method and device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11153505A (en) * | 1997-11-20 | 1999-06-08 | Denso Corp | Rotor positioning device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058429A (en) * | 1990-02-13 | 1991-10-22 | Gebruder Hofmann Gmbh & Co. Kg Maschinenfabrik | Apparatus for measuring an unbalance of a rotary member |
| CN1566914A (en) * | 2003-06-27 | 2005-01-19 | 盛德恩 | Dynamic balancing measuring method and high-frequency ratio hard support dynamic balancing arrangement |
| CN101694411A (en) * | 2009-10-14 | 2010-04-14 | 北京青云精益检测设备有限公司 | Dynamic balance test method and device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 超微型转子动平衡机设计;郑建彬等;《机电一体化》;20021231(第6期);第19-22页 * |
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