CN207366134U - It is a kind of to be used to measure the device that object mass center deviates shaft degree - Google Patents
It is a kind of to be used to measure the device that object mass center deviates shaft degree Download PDFInfo
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- CN207366134U CN207366134U CN201720926737.5U CN201720926737U CN207366134U CN 207366134 U CN207366134 U CN 207366134U CN 201720926737 U CN201720926737 U CN 201720926737U CN 207366134 U CN207366134 U CN 207366134U
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- laser displacement
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Abstract
The utility model discloses a kind of device for being used to measure object mass center deviation shaft degree, including pedestal, rotating module, standard quality block, laser displacement sensor and processing module.The rotating module have by flexible structure be fixed on the bottom plate of the pedestal, the motor for being installed on the bottom plate, set be fixed in the motor output shaft for fixing the clamper of object under test and being fixed on the vibration target bar of the bottom plate, wherein, the clamper has three evenly arranged location divisions at equal intervals；The standard quality block is used to successively be positioned over three location divisions；The laser displacement sensor is used for the vibration amplitude for measuring the vibration target bar；The vibration amplitude for the vibration target bar that the processing module is used to receive and be measured according to the laser displacement sensor calculates the eccentric inertia of the object under test.Thus, described device can realize the quantitative test of object minor eccentricities degree.
Description
Technical field
It the utility model is related to the apparatus field of high-acruracy survey, and in particular to one kind is used to measure object mass center deviation turn
The device of axis degree.
Background technology
In the industry of this area, never the eccentric degree of the direct Measuring plate substrate of a ripe equipment, particularly works as
The eccentric degree very little of disk substrate, i.e., in milligram grade, traditional measurement barycenter equipment can not realize high-precision disk substrate
Eccentric degree measurement.
In existing industrial chain, the control for the eccentric degree of disk substrate is parallel mainly by the circularity of management and control disk substrate
The static parameters such as degree, the uniformity carry out indirect control.In addition, the current measuring method to disk substrate eccentric degree usually requires elder generation
By disk substrate after magnetic treatment is assembled into hard disk, signal disturbance is read come the indirect bias for judging disk substrate by measuring magnetic field
Degree, but the result so measured includes eccentricity component caused by the components such as hard disk, motor, rotor, can not be accurate
Go out the eccentric vibrating itself brought by disk substrate.Moreover, from disk substrate to hard disk is assembled into, the cycle is longer, management and control when being unfavorable for
Assess the eccentric degree of the disk substrate in producing line.
So, it is necessary to a kind of device for being used to measure object mass center deviation shaft degree is designed, to overcome the above problem.
Utility model content
Technical problem to be solved in the utility model is, for the existing above problem of the prior art, there is provided one
Kind is used to measure the device that object mass center deviates shaft degree, it uses high-precision non-contacting Laser Displacement to measure, can
Realize the quantitative test of disk substrate minor eccentricities degree, in addition, the integrated level of described device is high and easy to operate, can on-line checking
Process the disk substrate in producing line.
Technical solution is used by the utility model solves its technical problem：There is provided a kind of inclined for measuring object mass center
From the device of shaft degree, including：
Pedestal；
Rotating module, its have by flexible structure be fixed on the bottom plate of the pedestal, the motor for being installed on the bottom plate,
Set is fixed in being used to fix the clamper of object under test and being fixed on the vibrating target of the bottom plate for the output shaft of the motor
Bar, wherein, the clamper has three evenly arranged location divisions at equal intervals；
Standard quality block, for being successively positioned over three location divisions；
Laser displacement sensor, its laser beam sent are directed at the vibration target bar, for measuring the vibration target bar
Vibration amplitude；
First controller, is electrically connected the motor, for controlling the start and stop of the motor；
Second controller, is electrically connected the laser displacement sensor, for controlling the start and stop of the laser displacement sensor；
Processing module, communicates to connect the laser displacement sensor, for receiving and according to the laser displacement sensor
The vibration amplitude of the vibration target bar measured calculates the eccentric inertia of the object under test.
It is provided by the utility model to be used to measure in the device that object mass center deviates shaft degree, the output shaft of the motor
Rotational frequency and it is described vibration target bar intrinsic frequency match.
It is provided by the utility model to be used to measure in the device that object mass center deviates shaft degree, set on the downside of the pedestal
There is vibration isolator.
Provided by the utility model to be used to measure in the device that object mass center deviates shaft degree, the pedestal is big by density
In equal to 4kg/m3Heavy metal material is made.
Provided by the utility model to be used to measure in the device that object mass center deviates shaft degree, the flexible structure includes
Four Z-shaped metalworks, the metalwork include upper linking arm described in upper linking arm, lower linking arm and vertical connection and described
The support arm of lower linking arm.
It is provided by the utility model to be used to measure in the device that object mass center deviates shaft degree, have on the upside of the pedestal
Be recessed the heavy platform formed, and the compliant mechanism is fixed on the heavy platform.
Provided by the utility model to be used to measure in the device that object mass center deviates shaft degree, the clamper is including being in
Discoid upper disk, the upper surface of the upper disk are equipped with six location divisions, six location divisions circle on described
Spaced 60 degree of settings two-by-two on the circumferencial direction of disk.
Implement provided by the utility model, following beneficial effect can be reached：It is described to be used to measure object mass center deviation turn
The device of axis degree, including：Pedestal；Rotating module, it, which has, is fixed on the bottom plate of the pedestal by flexible structure, is installed on
The motor of the bottom plate, set are fixed in being used to fix the clamper of object under test and being fixed on institute for the output shaft of the motor
The vibration target bar of bottom plate is stated, wherein, the clamper has three evenly arranged location divisions at equal intervals；Standard quality block, is used
In being successively positioned over three location divisions；Laser displacement sensor, its laser beam sent are directed at the vibration target bar, are used for
Measure the vibration amplitude of the vibration target bar；First controller, is electrically connected the motor, for controlling the start and stop of the motor；
Second controller, is electrically connected the laser displacement sensor, for controlling the start and stop of the laser displacement sensor；Handle mould
Block, communicates to connect the laser displacement sensor, for the vibration for receiving and being measured according to the laser displacement sensor
The vibration amplitude of target bar calculates the eccentric inertia of the object under test.Thus, described device can realize that disk substrate is small partially
The quantitative test of heart degree, in addition, the integrated level of described device is high and easy to operate, disk base that can be in on-line checking processing producing line
Piece.
Brief description of the drawings
Fig. 1 is the Three-dimensional combination diagram of the utility model preferred embodiment；
Fig. 2 is the perspective exploded view of the utility model preferred embodiment；
Fig. 3 is the first schematic perspective view of the rotating module of the utility model preferred embodiment；
Fig. 4 is the second schematic perspective view of the rotating module of the utility model preferred embodiment；
Fig. 5 is that the side of the rotating module of the utility model preferred embodiment is intended to；
Fig. 6 is upper disk when standard quality module is not placed in rotating module in the utility model preferred embodiment
Front schematic view；
Fig. 7 is upper disk when standard quality module is placed in rotating module in the utility model preferred embodiment
Front schematic view；
Fig. 8 is the schematic diagram that the line-of-sight course that the processing module of the utility model preferred embodiment uses calculates eccentric vector.
The drawing reference numeral explanation of embodiment：
Embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, it is detailed now to compare attached drawing
Illustrate specific embodiment of the present utility model.Obviously, the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creation
Property work under the premise of all other embodiments obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, Figure 2 and Figure 7, it is the dress provided by the utility model for being used to measure object mass center deviation shaft degree
The preferred embodiment put, described device include pedestal 1, rotating module 2, standard quality block, laser displacement sensor 4, first and control
Device 5, second controller 6 and processing module processed.
The pedestal 1 is flat cuboid platy structure, it is more than or equal to 4kg/m by density3Heavy metal material system
Into for example, copper, iron, lead etc..1 upper table of pedestal downwards concave shape into a heavy platform 11.
As shown in figure 3, the rotating module 2 includes bottom plate 21, motor 22, clamper 23 and vibration target bar 24.
The bottom plate 21 is flat cuboid platy structure, its length and width is less than the length and width of the heavy platform 11, the bottom plate
21 lower surfaces are recessed to form a concave part 211 upwards (referring to Fig. 4).The bottom plate 21 is fixed on the pedestal by flexible structure
1, specifically, the flexible structure includes four Z-shaped metalworks 81, the metalwork 81 includes upper linking arm 811, lower company
Connect described in arm 812 and vertical connection the support arm 813 of linking arm 811 and the lower linking arm 812, the metalwork 81 it is upper
Linking arm 811 is embedded in the upper surface of the concave part 211 of the bottom plate 21, and is fastened by bolts in the bottom plate 21,
The lower linking arm 812 of the metalwork 81 is embedded in the lower surface of the heavy platform 11 of the pedestal 1, and is fastened by bolts in institute
State pedestal 1.
The motor 22 is fixed on the middle part of the bottom plate 21, and the output shaft of the motor 22 is pierced by the bottom plate upwards
21, and it is vertical with the bottom plate 21.
Referring to Fig. 5 and Fig. 6, the clamper 23 includes upper disk 231, lower disc 232 and three clamp screws 233.Institute
It is in the form of annular discs to state disk 231, its upper surface be equipped with six location division 2311a, 2311b, 2311c, 2311d, 2311e,
2311f, the circumference of six location division 2311a, 2311b, 2311c, 2311d, 2311e, 2311f disks 231 on described
Spaced 60 degree of settings two-by-two on direction, the distance in the location division 2311 to upper 231 center of circle of disk is R.This implementation
In example, described location division 2311a, 2311b, 2311c, 2311d, 2311e, 2311f are from upper 231 surface indentation of disk
The notch of formation, the overall size of the standard quality block is designed as matching with the notch, so that the mark
Quasi- mass block can be embedded in described location division 2311a, 2311b, 2311c, 2311d, 2311e, 2311f just.Three folders
Screw 233 is held tightly to pass through the upper disk 231 from top to bottom and fasten with the lower disc 232, three clamp screws 233
On described on the circumferencial direction of disk 231 two-by-two it is spaced 120 degree arrangement.
As shown in figure 3, the vibration target bar 24 includes fixed part 241 and vibration section 242, the fixed part 241 passes through spiral shell
Bolt is anchored on the upper surface of the bottom plate 21.The vibration section 242 is in bar shaped rectangular parallelepiped structure, vertical with the fixed part 241.
The laser displacement sensor 4 is installed on the upper surface of the pedestal 1, its laser beam sent is directed at the vibration
The top point position of the vibration section 242 of target bar 24, to measure the vibration amplitude of the vibration target bar 24.
First controller 5 and the second controller 6 are mounted on the upper surface of the pedestal 1, first control
Device 5 processed is electrically connected with the motor 22, to control the start and stop of the motor 22, the second controller 6 and and the laser
Displacement sensor 4 is electrically connected, to control the start and stop of the laser displacement sensor 4.
The processing module communicates to connect the laser displacement sensor 4, and the processing module uses intelligent movable equipment,
For example, removable computer, smart mobile phone etc., the processing module is built-in with can calculate eccentric position and deviation length according to line-of-sight course
Calculation procedure so that the vibrating target that the processing module can be received and measured according to the laser displacement sensor 4
The vibration amplitude of bar 24 calculates the eccentric inertia of the object under test.
In order to better illustrate described device provided in this embodiment, shaft degree is now deviateed with the barycenter of Measuring plate substrate
Exemplified by, describe the application method of described device in detail.
Carry out the rotating module 2 first and eccentric vector measurement in the case of the disk substrate be not installed, specifically include with
Lower step：
The first step, in the case of not installing the disk substrate and the standard quality block in described device, passes through described
One controller 5 and the second controller 6 drive the motor 22 and the laser displacement sensor 4 respectively.The motor 22
Drive the clamper 23 to rotate, the clamper 23 and then drive the bottom plate 21 to vibrate, the bottom plate 21 and then evoke institute
State vibration section 242 to vibrate, so that the vibration section 242 occurs bending and deformation.The laser displacement sensor 4 measures described at this time
The vibration amplitude of vibration section 242, is denoted as AO.
Second step, the motor 22 and the laser position are closed by first controller 5 and the second controller 6
Displacement sensor 4.The standard quality block is positioned over the location division 2311a, then by first controller 5 and described
Second controller 6 drives the motor 22 and the laser displacement sensor 4 again.The motor 22 drives the clamper 23
Rotation, the clamper 23 and then drives the bottom plate 21 to vibrate, and the bottom plate 21 and then evokes the vibration section 242 and vibrates,
So that the vibration section 242 occurs bending and deformation.The laser displacement sensor 4 measures the vibration of the vibration section 242 at this time
Amplitude, is denoted as R1.
3rd step, the motor 22 and the laser position are closed by first controller 5 and the second controller 6
Displacement sensor 4.The standard quality block is moved to the location division 2311c, then by first controller 5 and described
Second controller 6 drives the motor 22 and the laser displacement sensor 4 again.The motor 22 drives the clamper 23
Rotation, the clamper 23 and then drives the bottom plate 21 to vibrate, and the bottom plate 21 and then evokes the vibration section 242 and vibrates,
So that the vibration section 242 occurs bending and deformation.The laser displacement sensor 4 measures the vibration of the vibration section 242 at this time
Amplitude, is denoted as R2.
4th step, the motor 22 and the laser position are closed by first controller 5 and the second controller 6
Displacement sensor 4.The standard quality block is moved to the location division 2311e, then by first controller 5 and described
Second controller 6 drives the motor 22 and the laser displacement sensor 4 again.The motor 22 drives the clamper 23
Rotation, the clamper 23 and then drives the bottom plate 21 to vibrate, and the bottom plate 21 and then evokes the vibration section 242 and vibrates,
So that the vibration section 242 occurs bending and deformation.The laser displacement sensor 4 measures the vibration of the vibration section 242 at this time
Amplitude, is denoted as R3.
So far, AO, R1, R2 and R3 that the processing module can be measured according to the laser displacement sensor 4, using 3 points
Method calculates the eccentric vector of the rotating module 2.Referring to Fig. 8, specific calculating process is：It is center of circle AO as radius using point O
Circle 101 is done, choose three on the circumference of circle 101 corresponds to the location division 2311a, location division 2311c and location division respectively
Point A, the point B and point C of 2311f, is that radius does circle 102 by center of circle R1 of point A, circle 103 is done by center of circle R2 radius of point B, with
Point C is that center of circle R3 is that radius does circle 104, by two larger circles of radius (i.e. round 102 and circle 104) and in circle 101
Intersection point is denoted as point K, vectorIt can represent that the rotating module 2 does not install eccentric position in the case of the disk substrate and partially
To length.
Then carry out the eccentric vector measurement that the rotating module 2 is provided with the case of the disk substrate, specifically include with
Lower step：
5th step, the motor 22 and the laser position are closed by first controller 5 and the second controller 6
Displacement sensor 4.The standard quality block is removed, and by the disk substrate be fixed on the upper disk 231 of the clamper 23 with
Between lower disc 232, the motor 22 and institute are then driven by first controller 5 and the second controller 6 again
State laser displacement sensor 4.The motor 22 drives the disk substrate to rotate by the clamper 23, the disk substrate and then
Drive the bottom plate 21 to vibrate, the bottom plate 21 and then evoke the vibration section 242 and vibrate, so that the vibration section 242 occurs
Flexural deformation.The laser displacement sensor 4 measures the vibration amplitude of the vibration section 242 at this time, is denoted as AO '.
Second step is repeated in the 4th step, measures the vibration section 242 of the vibration target bar 24 respectively under three circumstances
Vibration amplitude be respectively R1 ', R2 ' and R3 '.
So far, the bias that the rotating module 2 is provided with the case of the disk substrate can be calculated in the processing module
Vector, specific calculating process are same as above, and so it will not be repeated, and the result drawn is denoted as vector
The processing module so can draw by the disk substrate introduce eccentricity component beThe disk base
Eccentric inertia Ψ=M of piecec× R × (OR-OK)/(OR × OK), wherein, McFor the quality of disk substrate.So far, the disk is measured
The barycenter of substrate deviates the output shaft degree of the motor 22.
It should be noted that described device is not limited to the measurement of the eccentric degree of disk substrate, it can be used for other classes pair
The measurement and management and control of the eccentric degree of barycenter and the high precise part of shaft concentricity requirement.
Further, the intrinsic frequency phase of the rotational frequency of the output shaft of the motor 22 and the vibration target bar 24
Match somebody with somebody.That is, when the output shaft of the motor 22 drives the clamper 23 to rotate, so that the bottom plate 21 vibrates
When, the vibration frequency of the bottom plate 21 causes the vibration section 242 of the vibration target bar 24 to be in first-order modal just, that is, this
The vibration frequency of Shi Suoshu bottom plates 21 is equal to the intrinsic frequency of the vibration section 242 of the vibration target bar 24, so as to produce resonance effect
Should so that the vibration of the vibration section 242 is more obvious and is easily caught by the laser displacement sensor 4.
Further, the downside of the pedestal 1 is additionally provided with vibration isolator 12, and the vibration isolator 12 is frame-shaped construction, it can be with
Prevent from having an impact surrounding object when described device from running.
Further, the upside of the pedestal 1 is additionally provided with clamshell 13, and the clamshell 13 is around first controller 5, institute
Second controller 6 and the laser displacement sensor 4 are stated, so that described device appearance looks elegant.The clamshell 13 is located at institute
State and offer through hole at the position between laser displacement sensor 4 and the vibration target bar 24, in order to the laser displacement
Sensor 4 measures the vibration amplitude of the vibration target bar 24.
Implement one kind provided by the utility model, have the advantages that：
1st, it is described to be used to measure the device that object mass center deviates shaft degree, including：Pedestal 1；Rotating module 2, it has
The bottom plate 21 of the pedestal 1, the motor 22 for being installed on the bottom plate 21, set are fixed on by flexible structure and are fixed in the motor 22
Output shaft be used for fix the clamper 23 of object under test and be fixed on the vibration target bar 24 of the bottom plate 21, wherein, institute
Stating clamper 23 has three evenly arranged location divisions 2311 at equal intervals；Standard quality block, for being successively positioned over three institutes
State location division 2311；Laser displacement sensor 4, its laser beam sent alignment vibration target bar 24, for measuring described shake
The vibration amplitude of moving-target bar 24；First controller 5, is electrically connected the motor 22, for controlling the start and stop of the motor 22；Second
Controller 6, is electrically connected the laser displacement sensor 4, for controlling the start and stop of the laser displacement sensor 4；Processing module,
The laser displacement sensor 4 is communicated to connect, for the vibrating target for receiving and being measured according to the laser displacement sensor 4
The vibration amplitude of bar 24 calculates the eccentric inertia of the object under test.Described device is surveyed using the displacement of non-contact laser trigonometry
Amount method, is accurately measured the vibration of the vibration target bar 24, realizes micron order vibration measurement, measured using non-contacting vibration, surveyed
Test mushing error is not introduced during examination, realizes the quantitative test of disk substrate minor eccentricities degree, in addition, the collection of described device
Into Du Gao and easy to operate, disk substrate that can be in on-line checking processing producing line.
2nd, the rotational frequency of the output shaft of the motor 22 and the intrinsic frequency of the vibration target bar 24 match.Namely
Say, when the output shaft of the motor 22 drives the clamper 23 to rotate, so that when the bottom plate 21 vibrates, the bottom plate
21 vibration frequency causes the vibration section 242 of the vibration target bar 24 to be in first-order modal just, that is, the bottom plate 21 at this time
Vibration frequency be equal to it is described vibration target bar 24 vibration section 242 intrinsic frequency, so as to produce resonance effects, realize small level
The amplification of vibration so that the vibration of the vibration section 242 is more obvious and is easily caught by the laser displacement sensor 4.
The embodiment of the utility model is described above in conjunction with attached drawing, but the utility model is not limited to
The embodiment stated, above-mentioned embodiment is only schematical, rather than restricted, this area it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (7)
1. a kind of be used to measure the device that object mass center deviates shaft degree, it is characterised in that including：
Pedestal (1)；
Rotating module (2), it, which has, is fixed on the bottom plate (21) of the pedestal (1) by flexible structure, is installed on the bottom plate
(21) motor (22), set be fixed in the output shaft of the motor (22) the clamper (23) for being used to fix object under test and
The vibration target bar (24) of the bottom plate (21) is fixed on, wherein, the clamper (23) is evenly arranged at equal intervals with three
Location division；
Standard quality block, for being successively positioned over three location divisions；
Laser displacement sensor (4), its laser beam sent alignment vibration target bar (24), for measuring the vibration target bar
(24) vibration amplitude；
First controller (5), is electrically connected the motor (22), for controlling the start and stop of the motor (22)；
Second controller (6), is electrically connected the laser displacement sensor (4), for controlling the laser displacement sensor (4)
Start and stop；
Processing module, communicates to connect the laser displacement sensor (4), for receiving and according to the laser displacement sensor
(4) vibration amplitude of the vibration target bar (24) measured calculates the eccentric inertia of the object under test.
2. according to claim 1 be used to measure the device that object mass center deviates shaft degree, it is characterised in that the electricity
The rotational frequency of the output shaft of machine (22) and the intrinsic frequency of the vibration target bar (24) match.
3. according to claim 1 be used to measure the device that object mass center deviates shaft degree, it is characterised in that the base
The downside of seat (1) is equipped with vibration isolator (12).
4. according to claim 1 be used to measure the device that object mass center deviates shaft degree, it is characterised in that the base
Seat (1) is more than or equal to 4kg/m by density3Heavy metal material is made.
5. according to claim 1 be used to measure the device that object mass center deviates shaft degree, it is characterised in that described soft
Property structure include four Z-shaped metalworks (81), the metalwork (81) includes upper linking arm (811), lower linking arm (812)
With the support arm (813) of upper linking arm (811) and the lower linking arm (812) described in vertical connection.
6. according to claim 1 be used to measure the device that object mass center deviates shaft degree, it is characterised in that the base
There is the heavy platform (11) that depression is formed, the flexible structure is fixed on the heavy platform (11) on the upside of seat (1).
7. according to claim 1 be used to measure the device that object mass center deviates shaft degree, it is characterised in that the folder
Holder (23) includes upper disk (231) in the form of annular discs, and the upper surface of the upper disk (231) is equipped with six location divisions,
The spaced 60 degree of settings two-by-two on the circumferencial direction of disk (231) on described of six location divisions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926737.5U CN207366134U (en) | 2017-07-28 | 2017-07-28 | It is a kind of to be used to measure the device that object mass center deviates shaft degree |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926737.5U CN207366134U (en) | 2017-07-28 | 2017-07-28 | It is a kind of to be used to measure the device that object mass center deviates shaft degree |
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| Publication Number | Publication Date |
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| CN207366134U true CN207366134U (en) | 2018-05-15 |
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ID=62422772
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138069A (en) * | 2021-04-06 | 2021-07-20 | 北京工业大学 | Mechanical indication electric meter main shaft fastening detection device |
-
2017
- 2017-07-28 CN CN201720926737.5U patent/CN207366134U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138069A (en) * | 2021-04-06 | 2021-07-20 | 北京工业大学 | Mechanical indication electric meter main shaft fastening detection device |
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