CN101694411A - Dynamic balance test method and device thereof - Google Patents
Dynamic balance test method and device thereof Download PDFInfo
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- CN101694411A CN101694411A CN200910235439A CN200910235439A CN101694411A CN 101694411 A CN101694411 A CN 101694411A CN 200910235439 A CN200910235439 A CN 200910235439A CN 200910235439 A CN200910235439 A CN 200910235439A CN 101694411 A CN101694411 A CN 101694411A
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Abstract
The invention provides a dynamic balance test method and a device thereof. The dynamic balance test method is used for testing workpieces with peripheries distributed with grooves uniformly and includes steps as follows: axially rotating a workpiece; utilizing a non-contact sensor to test the grooves on the workpiece at a fixed position and generate a pulse signal, wherein the pulse signal generated by the non-contact sensor when the workpiece begins to rotate is used as an unbalance datum zero-degree signal; dividing frequency of the pulse signal, wherein multiple of frequency dividing is equal to the amount of the grooves on the workpiece; and defining unbalance amount and unbalance angle according to the pulse signal after frequency dividing, wherein a first pulse front edge of the unbalance datum zero-degree signal is used as a zero-angle position of the workpiece when defining the unbalance angle. The dynamic balance test method and the device thereof remove special processes on the surface of the workpiece and save working procedures, thereby increasing positioning accuracy of unbalance angle tests. The dynamic balance test method and the device thereof are adoptable to automation of dynamic balance.
Description
Technical field
The present invention relates to dynamic balance test method and device, relate in particular to and be used for dynamic balance test method and the device that periphery is evenly distributed with the workpiece of groove.
Background technology
There is a class workpiece on its excircle, to be evenly distributed with groove, for example various small-sized armature rotors.Normally by making around enameled wire on siliconized plate, wherein siliconized plate, fan blade and commutative ring etc. all are assembled by stamping machine for this class armature rotor.When the armature rotor high speed rotating, can produce very big vibration, not only bring bigger noise, and can shorten the life-span of electric tool itself, therefore must carry out dynamic balance calibration.When transient equilibrium detected, the sensor that equilibrator carries need be used to calculate uneven angle from being balanced one of workpiece identification and the angle reference signal of workpiece with frequency.Existing angle reference signal generating method is a kind of to be to coat the mark that colour contrast is arranged with surface of the work on excircle of workpiece, adopts electro-optical pickoff to discern again, to produce the angle reference signal; Another kind is that the axle head at workpiece puts an angle dial, adopts electro-optical pickoff to discern again, to produce the angle reference signal.
All there is defective in two kinds of angle reference signal generating methods of prior art, and they all need do special processing on workpiece, add sign, have not only increased operation, and are easy to generate angular error, influence the result that transient equilibrium detects.
Summary of the invention
Need do special processing and increase operation, produce the problem of error the surface of the work that passive equilibrium detects at what exist in the correlation technique, the object of the present invention is to provide a kind of surface of the work feature of directly utilizing to obtain uneven angle and then dynamic balance test method and device that find non-equilibrium site, with in addressing the above problem one of at least.
For achieving the above object, according to an aspect of the present invention, provide a kind of dynamic balance test method, be used to detect the workpiece that periphery is evenly distributed with groove, may further comprise the steps: workpiece is axially rotated; Non-contacting sensor detects the groove on the workpiece and produces pulse signal in the fixed position, wherein the pulse signal that produces when workpiece begins to rotate most of non-contacting sensor is as uneven benchmark zero degree signal, and the pulse signal that non-contacting sensor produces behind the Workpiece Rotating velocity-stabilization is as the angle reference signal; Pulse signals is carried out frequency division, and the multiple of frequency division equals the quantity of the groove on the workpiece; Utilizing the pulse signal behind the frequency division to determine amount of unbalance and uneven angle, is the zero degree position of first pulse front edge of uneven benchmark zero degree signal as workpiece when determining uneven angle.
The Workpiece Rotating velocity-stabilization is meant that the angle reference signal carries out behind the frequency division rotational speed with workpiece with frequently.
When definite amount of unbalance and uneven angle, be by with the relevant multiplication filtering circuit of the input of the angle reference signal behind unbalanced signal and the frequency division, wherein unbalanced signal is that vibration by the detection workpiece draws.
After definite amount of unbalance and uneven angle, as zero cross signal control Workpiece Rotating special angle, the number of degrees of special angle equal the number of degrees of uneven angle with the forward position of the pulse signal that receives.
Non-contacting sensor is a magnetoelectric induction sensor, and frequency division can adopt hardware approach or software approach.
Correspondingly, the invention provides a kind of dynamic balance detecting device, be used to detect the workpiece that periphery is evenly distributed with groove, comprise: non-contacting sensor, be used for detecting the groove on the workpiece and producing pulse signal in the fixed position, wherein the pulse signal that produces when workpiece begins to rotate most of non-contacting sensor is as uneven benchmark zero degree signal; Frequency divider is used for pulse signals and carries out frequency division, and the multiple of frequency division equals the quantity of groove; Electronic controller is used to receive the pulse signal behind the frequency division and determines amount of unbalance and uneven angle, is the zero degree position of first pulse front edge of uneven benchmark zero degree signal as workpiece when determining uneven angle.
Also comprise servomotor or stepper motor, be used to drive Workpiece Rotating.
Non-contacting sensor is a magnetoelectric induction sensor, and the focal length diameter of magnetoelectric induction sensor is less than the distance between the groove adjacent on the workpiece.
Frequency divider adopts programmable logic device (PLD).
Electronic controller comprises relevant multiplication filtering circuit, and relevant multiplication filtering circuit is used for determining amount of unbalance and uneven angle.
By above-mentioned at least one technical scheme of the present invention, utilization is balanced and detects the equally distributed groove that the workpiece periphery carries and in the Workpiece Rotating process groove is detected the generation pulse signal by adopting magnetoelectric induction sensor, then frequency division, determine amount of unbalance and uneven angle, and control Workpiece Rotating to non-equilibrium site.Method and apparatus of the present invention need not surface of the work is done special processing, saves operation, has improved uneven angle detection and location precision, and has been suitable for dynamically balanced robotization.
Description of drawings
Fig. 1 is the process flow diagram of a kind of dynamic balance test method of the present invention;
Fig. 2 is the structural representation of a kind of dynamic balance detecting device of the present invention.
1-workpiece, 2-magnetoelectric induction sensor, 3-frequency divider, 4-electronic controller, 5-servomotor.
Embodiment
As shown in Figure 1, the dynamic balance test method of present embodiment is used to detect the workpiece that periphery is evenly distributed with groove, may further comprise the steps: S110 axially rotates workpiece; S120, non-contacting sensor detects the groove on the workpiece and produces pulse signal in the fixed position, wherein the pulse signal that produces when workpiece begins to rotate most of non-contacting sensor is as uneven benchmark zero degree signal, and the pulse signal that non-contacting sensor produces behind the Workpiece Rotating velocity-stabilization is as the angle reference signal; S130, pulse signals is carried out frequency division, and the multiple of frequency division equals the quantity of the groove on the workpiece; S140 utilizes the pulse signal behind the frequency division to determine amount of unbalance and uneven angle, is the zero degree position of first pulse front edge of uneven benchmark zero degree signal as workpiece when determining uneven angle.
In step S110, workpiece is axially to rotate under the driving of servomotor.
In step S120, non-contacting sensor is a magnetoelectric induction sensor, and magnetoelectric induction sensor is near the stationkeeping of workpiece, and alignment pieces, but do not contact with workpiece adopts induced field to detect groove on the workpiece.Workpiece is in rotary course, when each groove on the workpiece forwards the position of corresponding magnetoelectric induction sensor to, magnetoelectric induction sensor will produce a pulse, because be evenly distributed with a plurality of grooves on the workpiece, so workpiece is in rotary course constantly, magnetoelectric induction sensor will produce the pulse train signal.The pulse signal that magnetoelectric induction sensor produces most when workpiece begins to rotate is as uneven benchmark zero degree signal.And behind the Workpiece Rotating velocity-stabilization, the pulse signal that magnetoelectric induction sensor produces is as the angle reference signal.
In step S130, the pulse signal that magnetoelectric induction sensor produces all will carry out frequency division through frequency divider, the multiple of frequency division will equal the quantity of the groove on the workpiece, and the method for frequency division is taked the hardware divider method, promptly uses programmable logic device (PLD) that the frequency division multiple is set.The angle reference signal behind frequency division with the rotational speed of workpiece with frequently, also be workpiece corresponding pulse that whenever rotates a circle behind the frequency division, this also is to judge the speed stable standard of Workpiece Rotating.
In step S140, be that the angle reference signal behind unbalanced signal and the frequency division is input in the relevant multiplication filtering circuit, relevant multiplication filtering circuit output amount of unbalance and uneven angle.Wherein, when determining uneven angle, be uneven benchmark zero degree signal first pulse front edge as the zero degree position of workpiece.Unbalanced signal is to draw by the vibration that detects workpiece by the another one sensor, and it is a simulating signal.
After definite amount of unbalance and uneven angle, stop after with the forward position of the pulse signal that receives as zero cross signal control driven by servomotor Workpiece Rotating special angle, the number of degrees of special angle equal the number of degrees of uneven angle.At this moment, the position that is parked in of workpiece is exactly the non-equilibrium site of workpiece.Next, just can be in this position, according to the amount of unbalance that draws before manually or automatically workpiece is carried out the correction of amount of unbalance.
Certainly, in other embodiment, workpiece also can be by step motor drive.And in another embodiment, frequency division in step S130 adopts the method for software to carry out frequency division, is specially to adopt counter to overflow the output pulse, and the overflow value that the initial value of counter is set at counter deducts the groove number of workpiece.
Correspondingly, the invention provides a kind of dynamic balance detecting device, be used to detect the workpiece that periphery is evenly distributed with groove.As shown in Figure 2, the dynamic balance detecting device of present embodiment comprises: magnetoelectric induction sensor 2, be used for detecting the groove on the workpiece 1 and producing pulse signal in the fixed position, wherein the pulse signal that produces when workpiece begins to rotate most of magnetoelectric induction sensor 2 is as uneven benchmark zero degree signal; Frequency divider 3 is used for pulse signals and carries out frequency division, and the multiple of frequency division equals the quantity of groove; Electronic controller 4 is used to receive the pulse signal behind the frequency division and determines amount of unbalance and uneven angle, is the zero degree position of first pulse front edge of uneven benchmark zero degree signal as workpiece when determining uneven angle; Servomotor 5 is used to drive workpiece 1 rotation.Wherein also comprise relevant multiplication filtering circuit in the electronic controller 4, relevant multiplication filtering circuit is used for determining amount of unbalance and uneven angle.
Magnetoelectric induction sensor 2 usabilities are answered the groove on the magnetic field detection workpiece 1.The focal length diameter of magnetoelectric induction sensor 2 should be less than the distance between two adjacent on the workpiece 1 grooves.At present magnetoelectric induction sensor 2 can detect the adjacent grooves distance effectively greater than 1 millimeter workpiece, and this sensor does not influence the identification to groove yet under the situation that the groove on workpiece 1 surface is filled by plastics.
Electronic controller 4 is selected for use has the PLC that puts number, numeration, zero clearing and pulse generation function.
The course of work of the dynamic balance detecting device of present embodiment is: servomotor 5 drives workpiece 1 rotation; Magnetoelectric induction sensor 2 is fixed on the position near workpiece 1, detect the groove on the workpiece 1, when each groove on the workpiece 1 forwards the position of corresponding magnetoelectric induction sensor 2 to, magnetoelectric induction sensor 2 will produce a pulse, because be evenly distributed with a plurality of grooves on the workpiece 1, magnetoelectric induction sensor 2 will produce the pulse train signal; The pulse signal that 3 pairs of magnetoelectric induction sensor of frequency divider 2 produce carries out frequency division; Signal behind the frequency division is input in the electronic controller 4, wherein the pulse signal that produces when workpiece 1 begins to rotate most of magnetoelectric induction sensor 2 is called uneven benchmark zero degree signal, electronic controller 4 is the zero degree position of first pulse front edge of uneven benchmark zero degree signal as workpiece, the pulse signal that produces behind workpiece 1 spin stabilization is called the angle reference signal, the angle reference signal is identical through the rotational speed frequency with workpiece 1 behind the frequency division of frequency divider 3, another sensor obtains unbalanced signal by the vibration that detects workpiece 1, this unbalanced signal is a simulating signal, with the relevant multiplication filtering circuit of the input of the angle reference signal behind unbalanced signal and the frequency division, relevant multiplication filtering circuit output amount of unbalance and uneven angle are the zero degree position of first pulse front edge of uneven benchmark zero degree signal as workpiece 1 when determining uneven angle; Electronic controller 4 is according to detected uneven angle, stop after driving the corresponding angle of the workpiece 1 uneven angle of rotation with the forward position of the pulse signal received as zero cross signal control servomotor 5, thereby determine the non-equilibrium site of workpiece 1, can revise workpiece 1 according to amount of unbalance more then.
Certainly, in other embodiment, workpiece 1 also can be by step motor drive.And in another embodiment, electronic controller 4 also can be selected for use has the servo controlling card of putting number, numeration, zero clearing and pulse generation function.
Dynamic balance test method of the present invention and device, utilization is balanced and detects the groove that workpiece 1 periphery carries and in workpiece 1 rotary course groove is detected the generation pulse signal by adopting magnetoelectric induction sensor 2, then frequency division, determine amount of unbalance and uneven angle, and control workpiece 1 rotate to non-equilibrium site.Method and apparatus of the present invention need not special processing is done on workpiece 1 surface, saves operation, has improved uneven angle detection and location precision, and has been suitable for dynamically balanced robotization.The heavy position of going that is particularly suited for workpiece 1 must guarantee situation in the middle of two adjacent grooves of workpiece 1.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a dynamic balance test method is used to detect the workpiece that periphery is evenly distributed with groove, it is characterized in that, may further comprise the steps:
Described workpiece is axially rotated;
Non-contacting sensor detects the described groove on the described workpiece and produces pulse signal in the fixed position, the pulse signal that wherein said non-contacting sensor produces most when described workpiece begins to rotate is as uneven benchmark zero degree signal, and the pulse signal that described non-contacting sensor produces behind described Workpiece Rotating velocity-stabilization is as the angle reference signal;
Described pulse signal is carried out frequency division, and the multiple of described frequency division equals the quantity of the described groove on the described workpiece;
Utilizing the described pulse signal behind the frequency division to determine amount of unbalance and uneven angle, is the zero degree position of first pulse front edge of described uneven benchmark zero degree signal as described workpiece when determining described uneven angle.
2. detection method according to claim 1 is characterized in that, described Workpiece Rotating velocity-stabilization is meant that described angle reference signal carries out behind the described frequency division rotational speed with described workpiece with frequently.
3. detection method according to claim 2, it is characterized in that, when definite described amount of unbalance and described uneven angle, be by with the relevant multiplication filtering circuit of described angle reference signal input behind unbalanced signal and the described frequency division, wherein said unbalanced signal is to draw by the vibration that detects described workpiece.
4. detection method according to claim 2, it is characterized in that, after definite described amount of unbalance and described uneven angle, described Workpiece Rotating special angle is controlled as zero cross signal in forward position with the described pulse signal that receives, and the number of degrees of described special angle equal the number of degrees of described uneven angle.
5. detection method according to claim 2 is characterized in that, described non-contacting sensor is a magnetoelectric induction sensor, and described frequency division can adopt hardware approach or software approach.
6. a dynamic balance detecting device is used to detect the workpiece that periphery is evenly distributed with groove, it is characterized in that, comprising:
Non-contacting sensor is used for detecting in the fixed position the described groove on the described workpiece and produces pulse signal, and the pulse signal that wherein said non-contacting sensor produces most when described workpiece begins to rotate is as uneven benchmark zero degree signal;
Frequency divider is used for described pulse signal is carried out frequency division, and the multiple of described frequency division equals the quantity of described groove;
Electronic controller is used to receive the described pulse signal behind the frequency division and determines amount of unbalance and uneven angle, is the zero degree position of first pulse front edge of described uneven benchmark zero degree signal as described workpiece when determining described uneven angle.
7. dynamic balance detecting device according to claim 6 is characterized in that, also comprises servomotor or stepper motor, is used to drive described Workpiece Rotating.
8. dynamic balance detecting device according to claim 6 is characterized in that, described non-contacting sensor is a magnetoelectric induction sensor, and the focal length diameter of described magnetoelectric induction sensor is less than the distance between the described groove adjacent on the described workpiece.
9. dynamic balance detecting device according to claim 6 is characterized in that, described frequency divider adopts programmable logic device (PLD).
10. dynamic balance detecting device according to claim 6 is characterized in that, described electronic controller comprises relevant multiplication filtering circuit, and described relevant multiplication filtering circuit is used for determining described amount of unbalance and described uneven angle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102354391A CN101694411B (en) | 2009-10-14 | 2009-10-14 | Dynamic balance test method and device thereof |
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| CN2009102354391A CN101694411B (en) | 2009-10-14 | 2009-10-14 | Dynamic balance test method and device thereof |
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| CN101694411A true CN101694411A (en) | 2010-04-14 |
| CN101694411B CN101694411B (en) | 2011-05-18 |
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| CN2009102354391A Expired - Fee Related CN101694411B (en) | 2009-10-14 | 2009-10-14 | Dynamic balance test method and device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912825A (en) * | 2010-08-02 | 2010-12-15 | 浙江大学 | Two-axial adaptive dynamic balance execution device for centrifuge |
| CN103134639A (en) * | 2013-01-31 | 2013-06-05 | 河南科技大学 | Super-miniature rotor dynamic balancing measuring method and equipment for complementing the same |
| CN106925800A (en) * | 2017-03-08 | 2017-07-07 | 北京海普瑞森科技发展有限公司 | A kind of dynamic balance analysis method and apparatus of single-point diamond lathe |
| CN108195514A (en) * | 2018-02-09 | 2018-06-22 | 广州市艾派克智能激光科技有限公司 | Automatically the device and method that uneven point position is searched after vertical dynamic balance detection |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4134303A (en) * | 1977-07-20 | 1979-01-16 | Spectral Dynamics Corporation | Method and circuit for providing electrical runout reduction in rotating shaft vibration detection systems |
| DE3421845A1 (en) * | 1984-06-13 | 1985-12-19 | Robert Bosch Gmbh, 7000 Stuttgart | Device for detecting the unbalance of a rotating body |
| CN101435733B (en) * | 2007-11-14 | 2011-06-22 | 深圳市大族激光科技股份有限公司 | Laser balance adjusting device |
-
2009
- 2009-10-14 CN CN2009102354391A patent/CN101694411B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912825A (en) * | 2010-08-02 | 2010-12-15 | 浙江大学 | Two-axial adaptive dynamic balance execution device for centrifuge |
| CN103134639A (en) * | 2013-01-31 | 2013-06-05 | 河南科技大学 | Super-miniature rotor dynamic balancing measuring method and equipment for complementing the same |
| CN103134639B (en) * | 2013-01-31 | 2015-07-15 | 河南科技大学 | Super-miniature rotor dynamic balancing measuring method and equipment for complementing the same |
| CN106925800A (en) * | 2017-03-08 | 2017-07-07 | 北京海普瑞森科技发展有限公司 | A kind of dynamic balance analysis method and apparatus of single-point diamond lathe |
| CN106925800B (en) * | 2017-03-08 | 2019-12-24 | 北京海普瑞森超精密技术有限公司 | Dynamic balance analysis method and device for single-point diamond lathe |
| CN108195514A (en) * | 2018-02-09 | 2018-06-22 | 广州市艾派克智能激光科技有限公司 | Automatically the device and method that uneven point position is searched after vertical dynamic balance detection |
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| CN101694411B (en) | 2011-05-18 |
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Owner name: QINGYUN AVIATION INSTRUMENT + METER CO., LTD., BEI Effective date: 20120629 |
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Effective date of registration: 20120629 Address after: 100086, No. 43 West Third Ring Road, Beijing, Haidian District Co-patentee after: AVIC Beijing Keeven Aviation Instrument Co., Ltd. Patentee after: Beijing Keeven Precision Machinery Co., Ltd. Address before: 100086, No. 43 West Third Ring Road, Beijing, Haidian District Patentee before: Beijing Keeven Precision Machinery Co., Ltd. |
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Granted publication date: 20110518 Termination date: 20181014 |
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