CN1715857A - Dynamic balance measuring device - Google Patents
Dynamic balance measuring device Download PDFInfo
- Publication number
- CN1715857A CN1715857A CN 200410059128 CN200410059128A CN1715857A CN 1715857 A CN1715857 A CN 1715857A CN 200410059128 CN200410059128 CN 200410059128 CN 200410059128 A CN200410059128 A CN 200410059128A CN 1715857 A CN1715857 A CN 1715857A
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- China
- Prior art keywords
- vibration
- measuring
- dynamic balance
- rocker
- measuring device
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000008093 supporting effect Effects 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 13
- 229920003266 Leaf® Polymers 0.000 claims description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 238000005259 measurement Methods 0.000 abstract description 29
- 238000013016 damping Methods 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001915 proofreading effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Testing Of Balance (AREA)
Abstract
The dynamic balance measuring device includes driving motor, driving belt, vibration measuring support and senor. The vibration measuring support consists of two parallel swinging frames with sensor; the driving belt driven with motor is installed between the two parallel swinging frames and is in the direction parallel to the swinging frames. The swinging frame has vibrator in the upper part, base in the lower part, and two spring sheets as support arm between the vibrator and the base. The present invention features the vibration limiting block below the vibrator, the vibration limiting slot on the base to hold the vibration limiting block and with some interval in between, electromagnetic rheologic liquid or the mixture of iron powder and electromagnetic rheologic liquid filled in the interval, and the exciting coil set outside the vibration limiting slot. The present invention has adjustable swinging frame damping and thus the measurement range and precision of the dynamic balance measuring device.
Description
Technical field
The invention belongs to rotor dynamic balancing alignment technique field, particularly, relate to dynamically balanced measurement mechanism.
Background technology
In the rotation series products, because its rotor can't be accomplished complete equipilibrium, when it rotates, will produce centrifugal force, cause unbalance, vibration, and then cause bigger problem.Therefore dynamically balanced good and bad degree directly determines serviceability, the serviceable life of product, to the quality generation tremendous influence of product.Particularly at present equipment develops to high speed, high efficiency and the high direction of refining, and dynamically balanced problem becomes increasingly conspicuous, becomes the key factor that the whole industry product quality of restriction promotes in some fields.As has an electric tool industry of widespread use occasion and huge market potential, the operating rate of large-tonnage product turns to commentaries on classics up to ten thousand even several ten thousand to change soaring from per minute several thousand, has brought with the directly related vibration severity of rotor dynamic balance performance to increase, use problems such as noise raising and life of product shortening.On the other hand, the mankind have begun to explore as far as the depths, universe, study to the nanometer space for a short time, bring high-tech develop rapidly, wherein be unable to do without the application of slewing equally, the characteristics of these equipment are high speed, precision, and dynamically balanced performance is had higher requirement.Therefore, rotor dynamic balancing is proofreaied and correct and to be one and to have enormous benefits and far-reaching technology.
Dynamic balance calibration is divided into that transient equilibrium is weighed (measurement) and heavily (processing) two basic processes are gone in transient equilibrium, promptly on the basis of finishing amount of unbalance and phase measurement, adopts certain processing mode to finish the elimination of amount of unbalance.Obviously, dynamic balancing measurement is the basis of proofreading and correct, and has only and accurately measures amount of unbalance and phase place thereof, could pass through processing and proofread and correct the dynamic balance performance that improves rotor.
In the prior art, dynamic balance measuring device generally comprises drive motor, driving belt, vibration measuring supporting, vibration-measuring sensor and phase detector, wherein the vibration measuring supporting is the key position of measurement mechanism, and it is made up of two parallel secondary rockers, and vibration-measuring sensor is installed on the rocker; Driving belt is installed between the two secondary rockers by motor-driven, and the belt direction is parallel to rocker; Rotor places between two rockers, fits in driving belt, and its two ends are placed on the rocker respectively.
When carrying out dynamic balancing measurement, the motion of driven by motor driving belt, and and then driving rotor rotation.The amount of unbalance that rotor itself exists can produce vibration when high-speed rotation, and causing vibration measuring supporting vibration, sensor receives this vibration signal, by to its conditioning, analysis and processing, and, finish the measurement of the size and the phase place thereof of amount of unbalance with this in conjunction with phase information.Obviously, the vibration measuring supporting is the key point of measuring, the function served as bridge that the information that plays is transmitted, the measuring accuracy and the scope of application of its sensitivity and the direct decision systems of measurement range, to support the important parameter of sensitivity and measurement range be its stiffness coefficient and ratio of damping and influence vibration measuring.
In the existing dynamic balance measuring instrument, the vibration measuring of employing supporting can be divided into two classes, promptly hard supporting and soft underprop.So-called hard supporting, its rocker panel stiffness is bigger, has the first very high rank natural frequency, be fit to bigger amount of unbalance and measure, but its sensitivity is lower, thereby cause The measuring precision lower; So-called soft underprop, its rocker rigidity is less, has the first lower rank natural frequency, sensitivity is higher, the vibration that rotor is small just can cause the vibration that rocker is bigger, thus this supporting to be suitable for amount of unbalance less, but the applications that measuring accuracy is had relatively high expectations.As seen, the rigidity height of hard vibration measuring supporting, its measurement range is wide, but measuring accuracy is low; And the rigidity of soft vibration measuring supporting is little, its measuring accuracy height then, but measurement range is little.Therefore, the dynamic-balance measuring system that adopts these vibration measuring supportings to realize is difficult to the contradiction between coordinated measurement scope and the measuring accuracy, be subjected to restriction greatly in actual applications, particularly the dynamic balance calibration object develops to many kinds and high-performance direction at present, this restriction has shown as and has been becoming increasingly acute, cause different measuring objects or different measuring phases need change different vibration measuring supportings, can implement the problem of dynamic balancing measurement effectively.At different measurement ranges and measuring accuracy requirement, the method that normal at present employing is repeatedly measured solves this problem, be and satisfy than the wide-measuring range requirement, at first adopt the measuring instrument of the bigger vibration measuring supporting of rigidity to measure, and carry out transient equilibrium processing according to measurement result and proofread and correct, after the amount of unbalance of object to be corrected reduced, less with the rigidity again but measuring instrument vibration measuring supporting that precision is higher was measured, and carries out finishing according to measurement result then.But this step is repeated multiple times also, up to reaching needed precision.Obviously, need many different dynamic balance measuring instrument multi-pass operationss like this, its inefficiency and cost are higher, and fail fundamentally to solve the contradiction between measurement range and the measuring accuracy.
A kind of common dynamic balance measuring instrument is arranged in the prior art, adopt the vibration measuring supporting of elasticity pendulum type rocker, it with spring leaf as support arm radially, the vibration of rotor causes the vibration of spring leaf, and sensor output vibration signal by being attached thereto, to its Treatment Analysis and in conjunction with phase information, finish the measurement of amount of unbalance size and phase place thereof.The measurement range of this vibration measuring supporting and measuring accuracy be fully by being determined as the rigidity of the spring leaf of support arm radially, and the rigidity that changes spring leaf can be coordinated measurement range that vibration measuring supports and the contradiction between the measuring accuracy.Therefore, someone is provided with a trip bolt in the spring leaf side, inconsistent with spring leaf, provide a fulcrum to spring leaf, and by regulating trip bolt, impose on the different acting force of spring leaf at the fulcrum place, take this to change the stiffness coefficient of spring leaf, thereby adjust the measurement range and the measuring accuracy of vibration measuring supporting to a certain extent.This kind adjustment is finished by the stiffness coefficient that changes the vibration measuring supporting, but this mode leans on operator's craft to carry out fully, is difficult to realize automatic control, and the accuracy of this adjustment simultaneously is low, and can only realize the classification adjustment.
The technical problem to be solved in the present invention is the measurement range of dynamic balance measuring instrument and the problem that measuring accuracy can not be taken into account, and the dynamic balance measuring instrument of a kind of program-controlled, step-less adjustment measurement range and measuring accuracy is provided.
Thinking of the present invention is the vibration measuring of aforesaid elasticity pendulum type rocker to be supported make improvements, the inventor wishes that vibration measuring is bearing under the constant condition of stiffness coefficient, the mechanism that adds a program-controlled change damping therein, step-less adjustment influences another important parameter---the ratio of damping of vibration measuring supporting measurement range and measuring accuracy, thereby realizes purpose of the present invention.
Summary of the invention
The technical solution used in the present invention is such: dynamic balance measuring device, comprise drive motor, and driving belt, vibration measuring supporting and sensor, the vibration measuring supporting is made up of two parallel secondary rockers, and sensor is installed on the rocker; Driving belt is installed between the two secondary rockers by motor-driven, and the belt direction is parallel to rocker; Rocker top is vibrating mass, the bottom is a pedestal, between vibrating mass and pedestal with two spring leafs as support arm, it is characterized in that: the vibrating mass below is provided with vibration-limiting block, the pedestal top is provided with vibration-limiting trench, described vibration-limiting block is placed in the vibration-limiting trench, and a space is arranged between the two, is filled with electrorheological and magnetorhelogical fluid in the space; Vibration-limiting trench is provided with field coil outward.
As further technical scheme, the present invention in the space of vibration-limiting block and vibration-limiting trench, the potpourri of filling ferrous powder and electrorheological and magnetorhelogical fluid.
The present invention has filled electrorheological and magnetorhelogical fluid between vibration-limiting trench and vibration-limiting block, it is a kind of intellectual material that can change at ratio of damping under the action of a magnetic field, adds outside under the electromagnetic field effect, and the apparent viscosity of electrorheological and magnetorhelogical fluid changes semisolid rapidly into from fluidised form; Remove add electromagnetic field after, become fluidised form rapidly again from semisolid, thereby realized adding weak electric signal for the on-line continuous of liquid viscosity, rapid and reversible adjusting and control.Be applied on the dynamic balance measuring instrument, when electric current on the field coil was zero, the ratio of damping of electrorheological and magnetorhelogical fluid was less, and this liquid is very little to the damping action that the supporting rocker plays, and the present invention is a common elasticity pendulum type rocker, has higher sensitivity; After the field coil energising, along with electric current on the field coil strengthens, the magnetic field intensity that acts on the electrorheological and magnetorhelogical fluid also strengthens, thereby the corresponding increase of the ratio of damping of electrorheological and magnetorhelogical fluid, makes the sensitivity of vibration measuring supporting reduce, and measurable range increases.Owing to there is certain clear and definite funtcional relationship between the ratio of damping of field coil electric current and magnetic induction density, electrorheological and magnetorhelogical fluid, therefore, regulate the ratio of damping of field coil electric current with regard to scalable vibration measuring supporting, correspondingly regulate measurement range and measuring accuracy.This adjusting is electrified, digitized, and numerical value accurately also can reproduce exactly, and can reach the purpose of step-less adjustment, requirement according to the invention.
Description of drawings
Fig. 1 is the structural representation of a kind of dynamic balance measuring device in the prior art.
Fig. 2 is the synoptic diagram of dynamic balance measuring device rocker of the present invention.
Embodiment
Referring to accompanying drawing 1.This dynamic balance measuring device comprises frame 1, and upper rack is vibration measuring supporting 5, and drive motor 2 and driving belt 3 are housed on the frame, drive motor drives driving belt and rotates, rotor 4 is positioned in the vibration measuring supporting, fits in driving belt 3, and drives its rotation by driving belt 3; The vibration measuring supporting is made up of two secondary parallel rockers, and driving belt 3 is contained between the two secondary rockers, is parallel to rocker; In the vibration measuring supporting sensor 7 is installed.Driving belt 3 rotates during measurement, and drives rotor 4 high-speed rotation, and the amount of unbalance of rotor causes vibration measuring supporting vibration, is delivered on the sensor 7, finishes the measurement of amount of unbalance and phase place thereof.
Referring to accompanying drawing 2.Vibration measuring supporting of the present invention is made up of two secondary parallel rockers, rocker top is vibrating mass 52, the bottom is a pedestal 51, between vibrating mass and pedestal with two spring leafs 56 as support arm, the vibrating mass below is provided with vibration-limiting block 53, and the pedestal top is provided with vibration-limiting trench 54, and its shape matches with vibration-limiting block, vibration-limiting block 53 is placed in the vibration-limiting trench 54, and vibration-limiting trench is provided with field coil 6 outward; Vibration-limiting block 53 has a space between the two with vibration-limiting trench 54, is filled with the potpourri 55 of electrorheological and magnetorhelogical fluid and iron powder in the space.
When present embodiment is not worked at field coil 6, the potpourri 55 of electrorheological and magnetorhelogical fluid and iron powder is liquid, but free movement between vibration-limiting block 53 and the vibration-limiting trench 54, the damping action that rocker is played is very little, present embodiment is an elasticity pendulum type rocker in fact still, and its natural frequency depends on support arm 56; When field coil 6 energising work, under the action of a magnetic field, the potpourri 55 of electrorheological and magnetorhelogical fluid and iron powder becomes semisolid, and rocker is played damping action, and the sensitivity of measurement mechanism is descended.
Claims (2)
1. dynamic balance measuring device comprises drive motor, driving belt, and vibration measuring supporting and sensor, the vibration measuring supporting is made up of two parallel secondary rockers, and sensor is installed on the rocker; Driving belt is installed between the two secondary rockers by motor-driven, and the belt direction is parallel to rocker; Rocker top is vibrating mass, the bottom is a pedestal, between vibrating mass and pedestal with two spring leafs as support arm, it is characterized in that: the vibrating mass below is provided with vibration-limiting block, the pedestal top is provided with vibration-limiting trench, described vibration-limiting block is placed in the vibration-limiting trench, and a space is arranged between the two, is filled with electrorheological and magnetorhelogical fluid in the space; Vibration-limiting trench is provided with field coil outward.
2. dynamic balance measuring device as claimed in claim 1 is characterized in that: in the space of vibration-limiting block and vibration-limiting trench, be filled with the potpourri of iron powder and electrorheological and magnetorhelogical fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410059128 CN1715857A (en) | 2004-08-12 | 2004-08-12 | Dynamic balance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410059128 CN1715857A (en) | 2004-08-12 | 2004-08-12 | Dynamic balance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1715857A true CN1715857A (en) | 2006-01-04 |
Family
ID=35821881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410059128 Pending CN1715857A (en) | 2004-08-12 | 2004-08-12 | Dynamic balance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1715857A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949752A (en) * | 2010-08-02 | 2011-01-19 | 浙江大学 | Triaxial adaptive dynamic-balance execution device for centrifuger |
| CN101738291B (en) * | 2008-11-11 | 2011-11-23 | 上海辛克试验机有限公司 | Electromagnetic sensor for balancing machine and assembling process thereof |
| CN104330214A (en) * | 2014-08-07 | 2015-02-04 | 郑州大学 | Simple field dynamic balancing method |
| CN106525336A (en) * | 2016-10-31 | 2017-03-22 | 石家庄铁道大学 | Rotor system unbalanced quantitative measurement system based on magnetorheological fluid and measurement method |
| CN107588893A (en) * | 2017-09-25 | 2018-01-16 | 杭州集智机电股份有限公司 | For placing the soft support dynamic balance testing device of rotor vertically |
| CN110926699A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Rotor dynamic balance correction method and automation equipment using same |
| CN110926702A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Dynamic balance correction method and automation equipment using same |
| CN115347730A (en) * | 2022-09-21 | 2022-11-15 | 南昌三瑞智能科技有限公司 | Motor rotor capable of quickly and automatically adjusting dynamic balance and dynamic balance adjusting method |
-
2004
- 2004-08-12 CN CN 200410059128 patent/CN1715857A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738291B (en) * | 2008-11-11 | 2011-11-23 | 上海辛克试验机有限公司 | Electromagnetic sensor for balancing machine and assembling process thereof |
| CN101949752B (en) * | 2010-08-02 | 2012-01-25 | 浙江大学 | Triaxial adaptive dynamic-balance execution device for centrifuger |
| CN101949752A (en) * | 2010-08-02 | 2011-01-19 | 浙江大学 | Triaxial adaptive dynamic-balance execution device for centrifuger |
| CN104330214A (en) * | 2014-08-07 | 2015-02-04 | 郑州大学 | Simple field dynamic balancing method |
| CN104330214B (en) * | 2014-08-07 | 2017-04-19 | 郑州大学 | Simple field dynamic balancing method |
| CN106525336B (en) * | 2016-10-31 | 2018-11-02 | 石家庄铁道大学 | Rotor-support-foundation system amount of unbalance quantitative measurement system based on magnetorheological fluid and measurement method |
| CN106525336A (en) * | 2016-10-31 | 2017-03-22 | 石家庄铁道大学 | Rotor system unbalanced quantitative measurement system based on magnetorheological fluid and measurement method |
| CN107588893A (en) * | 2017-09-25 | 2018-01-16 | 杭州集智机电股份有限公司 | For placing the soft support dynamic balance testing device of rotor vertically |
| CN107588893B (en) * | 2017-09-25 | 2023-07-14 | 杭州集智机电股份有限公司 | Soft support dynamic balance testing device for vertically placing rotor |
| CN110926699A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Rotor dynamic balance correction method and automation equipment using same |
| CN110926702A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Dynamic balance correction method and automation equipment using same |
| CN110926702B (en) * | 2019-11-08 | 2021-09-10 | 深圳智源工业互联网创新中心有限公司 | Dynamic balance correction method and automation equipment using same |
| CN115347730A (en) * | 2022-09-21 | 2022-11-15 | 南昌三瑞智能科技有限公司 | Motor rotor capable of quickly and automatically adjusting dynamic balance and dynamic balance adjusting method |
| CN115347730B (en) * | 2022-09-21 | 2024-03-15 | 南昌三瑞智能科技有限公司 | Motor rotor capable of quickly and automatically adjusting dynamic balance and dynamic balance adjusting method |
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