CN109738284A - Ultrasonic vibration auxiliary compression testing machine and test method - Google Patents
Ultrasonic vibration auxiliary compression testing machine and test method Download PDFInfo
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- CN109738284A CN109738284A CN201910012420.4A CN201910012420A CN109738284A CN 109738284 A CN109738284 A CN 109738284A CN 201910012420 A CN201910012420 A CN 201910012420A CN 109738284 A CN109738284 A CN 109738284A
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Abstract
The present invention provides a kind of ultrasonic vibration auxiliary compression testing machine and test method, testing machine includes: power value observation system, which is equipped with the force snesor of an installation on the base；Lower pressing seat, lower pressing seat is set to the upper surface of force snesor, and the upper surface of the lower pressing seat is for carrying test specimen；Lifting device, installation is on the base；Ultrasonic vibration system, including ultrasonic controller and ultrasonic vibration installation, ultrasonic controller is connected with ultrasonic vibration installation, ultrasonic vibration installation is mounted on the surface on lifting device and being located at lower pressing seat, the ultrasonic vibration installation includes ultrasonic vibration generator and ultrasonic amplitude transformer, and ultrasonic amplitude transformer is secured on ultrasonic vibration generator；Strain monitoring system, the strain monitoring system are equipped with industrial camera；Signal acquisition and processing system are connected with power value observation system and strain monitoring system.Present device structure is simple, and measuring accuracy is high, and simple to operate, working service is low in cost.
Description
Technical field
The present invention relates to the performance tests of metal component, and in particular to arrives a kind of ultrasonic vibration auxiliary compression testing machine and examination
Proved recipe method.
Background technique
Compared with static deformation process, the deformation resistance of metal component can be significant during ultrasonic vibration auxiliary deformation
It reduces, to effectively reduce the tonnage and power of metal component process equipment, reduces power consumption of polymer processing, it is a large amount of to save processing and manufacture
Cost.It is often required to use static compression test machine in metal material static mechanical property and deformational behavior research, and ultrasonic vibration
Then need to use ultrasonic vibration auxiliary compression testing machine in mechanical property and deformational behavior research under auxiliary.But compression at present
Testing machine is mainly static compression test machine, cannot achieve ultrasonic wave added compression function.
Summary of the invention
The present invention to solve the above-mentioned problems, provides a kind of ultrasonic vibration auxiliary compression testing machine, utilizes ultrasonic vibration
Generator provides high frequency controllable vibration, and direction of vibration is consistent with test specimen static compress direction, to realize ultrasonic vibration
The compression verification that load is superimposed with static compress load, while device structure is simple, measuring accuracy is high, and it is simple to operate, make
It is cheap with maintenance cost.Concrete scheme is as follows:
A kind of ultrasonic vibration auxiliary compression testing machine, comprising:
Pedestal；
Power value observation system, the power value observation system are equipped with the force snesor of an installation on the base；
Lower pressing seat, lower pressing seat is set to the upper surface of force snesor, and the upper surface of the lower pressing seat is for carrying
Test specimen；
Lifting device, installation is on the base；
Ultrasonic vibration system, including ultrasonic controller and ultrasonic vibration installation, ultrasonic controller and ultrasonic vibration installation phase
Even, ultrasonic vibration installation is mounted on the surface on lifting device and being located at lower pressing seat, and the ultrasonic vibration installation includes super
Sound vibration generator and ultrasonic amplitude transformer, ultrasonic amplitude transformer are secured on ultrasonic vibration generator；
Strain monitoring system, the strain monitoring system are equipped with industrial camera；
Signal acquisition and processing system are connected with power value observation system and strain monitoring system.
Further, the test specimen be cylindrical body, both ends of the surface parallelism tolerance be not more than 1:0.0005, cylindrical surface with
The squareness tolerance of any end face is not more than 3 ', and both ends of the surface surface roughness is not more than Ra0.4 μm, and cylindrical face surface roughness is not
Greater than Ra0.8 μm, cylindricity tolerance is not more than 0.01 in overall length.
Further, the performance parameter of the force snesor are as follows: dynamometry range -200KN~200KN, dynamometry precision are better than
5N, can monitor six force components simultaneously, and sample frequency is higher than 200KHz；
The performance parameter of the industrial camera are as follows: resolution ratio 162 × 120~2048 × 1536, shooting speed 1000~
300000fps, memory are greater than 128GB.
Further, the performance parameter of the ultrasonic vibration generator are as follows: 15~45KHz of vibration frequency, amplitude range 0~
22μm。
Further, the end face plane degree of the ultrasonic amplitude transformer and lower pressing seat is not more than
0.0002mm/mm, the depth of parallelism between ultrasonic amplitude of fluctuation rod end surface and lower pressing seat end face are not more than 0.0002mm/mm.
Further, lifting device is screw vice mechanism, comprising:
Electric motor, installation is on the base；
Lead screw, it is vertically-mounted on the base；
Crossbeam, crossbeam are provided with threaded hole and are cooperatively connected with lead screw, and ultrasonic vibration installation is mounted on the crossbeam.
Further, the torque of the electric motor is 100Nm~5000Nm；
The position precision that the crossbeam moves up and down is better than 0.1 μm, and positional repeatability is better than 0.1 μm；
The lead screw diameter is 15~40mm.
Further, the crossbeam, ultrasonic vibration generator, ultrasonic amplitude transformer, test specimen, lower pressing seat and power sensing
The whole concentricity in crossbeam total travel of device composition is better than 1:0.001.
Further, the power value observation system further includes charge amplifier and data collecting card, charge amplifier letter
Number connection force snesor, data collecting card signal connect charge amplifier.
A kind of test method using above-mentioned ultrasonic vibration auxiliary compression testing machine, includes the following steps:
Test specimen is placed in lower pressing seat upper surface；
Lifting device is adjusted, makes the bottom end of ultrasonic amplitude transformer close to test specimen upper surface；
Pass through the force value and strain value on power value observation system and strain monitoring system monitoring test specimen；
Start lifting device, lifting device drives ultrasonic vibration installation at the uniform velocity to move down, and realizes test specimen static compress；
After test specimen is surrendered, start ultrasonic vibration installation, be superimposed ultrasonic vibration with static compress, realizes quilt
The compression of test block ultrasonic wave added；
The power in test specimen ultrasonic wave added compression process is obtained by power value observation system and strain monitoring system and is answered
Parameter evidence.
Compared with the prior art, the advantages of the present invention are as follows:
It is controllable to provide high frequency using ultrasonic vibration generator for a kind of ultrasonic vibration auxiliary compression testing machine provided by the invention
Vibration, direction of vibration is consistent with tested test specimen static compress direction, to realize that ultrasonic vibratory loading and static compress carry
The compression verification of lotus superposition, while device structure is simple, measuring accuracy is high, and simple to operate, working service is low in cost.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of schematic diagram of ultrasonic vibration auxiliary compression testing machine provided by the invention；
Fig. 2 is test method flow chart provided by the invention.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Illustrate technical solution of the present invention.Presently preferred embodiments of the present invention is described in detail as follows, however other than these detailed descriptions, this
Invention can also have other embodiments.
The present invention provides a kind of ultrasonic vibration auxiliary compression testing machines, as shown in Figure 1, comprising:
Pedestal 1；
Power value observation system, the power value observation system are equipped with a force snesor 6 being mounted on pedestal 1；
Lower pressing seat 5, lower pressing seat 5 is set to the upper surface of force snesor 6, and the upper surface of the lower pressing seat 5 is used for
Carry test specimen 8；
Lifting device is mounted on pedestal 1；
Ultrasonic vibration system, including ultrasonic controller 13 and ultrasonic vibration installation, ultrasonic controller 13 and ultrasonic vibration fill
Set connected, ultrasonic vibration installation is mounted on lifting device and is located at the surface of lower pressing seat 5, and ultrasonic vibration installation includes super
Sound vibration generator 3 and ultrasonic amplitude transformer 4, ultrasonic amplitude transformer 4 are secured on ultrasonic vibration generator 3；
Strain monitoring system, the strain monitoring system are equipped with industrial camera 7；
Signal acquisition and processing system are connected with power value observation system and strain monitoring system.
Preferably, signal acquisition and processing system can be the computer 11 for carrying respective handling software, pass through signal wire
12 are connected with force snesor 6 and industrial camera 7.In addition, ultrasonic controller 13 and ultrasonic vibration installation are also through 12 phase of signal wire
Even.
Test specimen 8 is cylindrical body, and both ends of the surface parallelism tolerance is not more than 1:0.0005, and cylindrical surface is hung down with any end face
Straight degree tolerance is not more than 3 ', and both ends of the surface surface roughness is not more than Ra0.4 μm, and cylindrical face surface roughness is not more than Ra0.8 μm,
Cylindricity tolerance is not more than 0.01 in overall length.It is further preferred that both ends of the surface parallelism tolerance 1:0.0005, cylindrical surface and any
The squareness tolerance of end face is 3 '
(angle i.e. between any bus in cylindrical surface and tested surface is not more than 3 ' relative to the deviation at 90 ° of right angles), two
End face surface roughness is Ra0.4 μm, and cylindrical face surface roughness is Ra0.8 μm, and cylindricity tolerance is 0.01 in overall length.
The performance parameter of industrial camera 7 are as follows: resolution ratio 162 × 120~2048 × 1536, shooting speed 1000~
300000fps, memory are greater than 128GB.Further preferred performance parameter are as follows: resolution ratio 162 × 120~1024 × 768, shooting
3000~210000fps of speed, memory reach 256GB.
The performance parameter of ultrasonic vibration generator 3 are as follows: 15~45KHz of vibration frequency, 0~22 μm of amplitude range.Further
Preferred performance parameter are as follows: 20~40KHz of vibration frequency, 0~20 μm of amplitude range.
Wherein, the end face plane degree of ultrasonic amplitude transformer 4 and lower pressing seat 5 is not more than 0.0002mm/mm, ultrasonic amplitude transformer 4
The depth of parallelism between 5 end face of end face and lower pressing seat is not more than 0.0002mm/mm.It is further preferred that ultrasonic amplitude transformer 4 and under hold
The end face plane degree of wedge 5 is 0.0002mm/mm, and the depth of parallelism between 5 end face of 4 end face of ultrasonic amplitude transformer and lower pressing seat is
0.0002mm/mm。
In an optional embodiment, lifting device is screw vice mechanism, comprising:
Electric motor 9 is mounted on pedestal 1；
Lead screw 10 is vertically installed on pedestal 1, and lead screw 10 rotates under the driving of electric motor 9, such as electric motor
9 can drive lead screw 10 to rotate by belt pulley or gear set；Crossbeam 2, crossbeam 2 are provided with threaded hole and cooperate with lead screw 10
Connection, ultrasonic vibration installation are mounted on the crossbeam 2.
The torque of electric motor 9 is 100Nm~5000Nm；The position precision that crossbeam 2 moves up and down is better than 0.1 μm, position
Repeatable accuracy is better than 0.1 μm；10 diameter of lead screw is 15~40mm.It is further preferred that the torque of electric motor 9 is 2000Nm；
The position precision that crossbeam 2 moves up and down reaches 0.05 μm, and positional repeatability reaches 0.05 μm；10 diameter of lead screw is 40mm.
It is further preferred that power value observation system further includes charge amplifier and data collecting card, charge amplifier letter
Number connection force snesor 6, data collecting card signal connect charge amplifier.Charge amplifier is used to carry out collected signal
Amplification, is then output to data collecting card signal.
It is further preferred that crossbeam 2, ultrasonic vibration generator 3, ultrasonic amplitude transformer 4, test specimen 8, lower pressing seat 5 and
The whole concentricity in 2 total travel of crossbeam that force snesor 6 forms reaches 1:0.0005.
The present invention drives lead screw 10 to rotate by electric motor 9, and drives crossbeam 2 to move up by the rotation of lead screw 10,
To realize static compress；While static compress, ultrasonic vibration is generated by ultrasonic vibration generator 3, and pass through ultrasound
Amplitude transformer 4 is transferred to test specimen 8, to realize the ultrasonic vibration auxiliary compression of test specimen 8；It is supervised by power value observation system
Survey the force value variation of 8 ultrasonic wave added compression process of test specimen；Pass through 8 ultrasonic wave added pressure of strain monitoring system monitoring test specimen
The strain variation of compression process.
The present invention also provides a kind of test method using above-mentioned ultrasonic vibration auxiliary compression testing machine, such as Fig. 2 simultaneously
It is shown, include the following steps:
Step S1, test specimen 8 is placed in the center position of 5 upper surface disk of lower pressing seat.
Step S2, the position for adjusting crossbeam 2, makes the bottom end of ultrasonic amplitude transformer 4 slowly close to 8 upper surface of test specimen.
Step S3, pass through the force value and strain value on power value observation system and strain monitoring system monitoring test specimen 8.
Step S4, start lifting device, move down crossbeam 2 at the uniform velocity with the speed of 1mm/min, realize that test specimen 8 is static
Compression；
Step S5, after test specimen 8 is surrendered, start ultrasonic vibration installation.Ultrasonic vibration generator 3 drives ultrasound
Amplitude transformer 4 is vibrated, and is superimposed ultrasonic vibration with static compress, realizes the compression of 8 ultrasonic wave added of test specimen；
Step S6, it is obtained in 8 ultrasonic wave added compression process of test specimen by power value observation system and strain monitoring system
Power and strain data.
To sum up, the present invention provides a kind of ultrasonic vibration auxiliary compression testing machine, and device structure is simple, and measuring accuracy is high, behaviour
Make simple and convenient, working service is low in cost, Experimental Mechanics and material science teaching with there is very high reality in scientific research activity
With value and important practical significance.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, devices and structures not described in detail herein should be understood as gives reality with the common mode in this field
It applies；Anyone skilled in the art, without departing from the scope of the technical proposal of the invention, all using the disclosure above
Methods and technical content many possible changes and modifications are made to technical solution of the present invention, or be revised as equivalent variations etc.
Embodiment is imitated, this is not affected the essence of the present invention.Therefore, anything that does not depart from the technical scheme of the invention, foundation
Technical spirit of the invention any simple modifications, equivalents, and modifications made to the above embodiment, still fall within the present invention
In the range of technical solution protection.
Claims (10)
1. a kind of ultrasonic vibration auxiliary compression testing machine characterized by comprising
Pedestal (1)；
Power value observation system, the power value observation system are equipped with a force snesor (6) being mounted on pedestal (1)；
Lower pressing seat (5), lower pressing seat (5) are set to the upper surface of force snesor (6), and the upper surface of the lower pressing seat (5)
For carrying test specimen (8)；
Lifting device is mounted on pedestal (1)；
Ultrasonic vibration system, including ultrasonic controller (13) and ultrasonic vibration installation, ultrasonic controller (13) and ultrasonic vibration fill
Set connected, ultrasonic vibration installation is mounted on lifting device and is located at the surface of lower pressing seat (5), the ultrasonic vibration installation
Including ultrasonic vibration generator (3) and ultrasonic amplitude transformer (4), ultrasonic amplitude transformer (4) is secured to ultrasonic vibration generator (3)
On；
Strain monitoring system, the strain monitoring system are equipped with industrial camera (7)；
Signal acquisition and processing system are connected with power value observation system and strain monitoring system.
2. ultrasonic vibration auxiliary compression testing machine as described in claim 1, which is characterized in that the test specimen (8) is circle
Cylinder, both ends of the surface parallelism tolerance are not more than 1:0.0005, and the squareness tolerance on cylindrical surface and any end face is not more than 3 ', both ends
Face surface roughness is not more than Ra0.4 μm, and cylindrical face surface roughness is not more than Ra0.8 μm, and cylindricity tolerance is little in overall length
In 0.01.
3. ultrasonic vibration auxiliary compression testing machine as described in claim 1, which is characterized in that
The performance parameter of the force snesor (6) are as follows: dynamometry range -200KN~200KN, dynamometry precision are better than 5N, can supervise simultaneously
Six force components are surveyed, sample frequency is higher than 200KHz；
The performance parameter of the industrial camera (7) are as follows: resolution ratio 162 × 120~2048 × 1536, shooting speed 1000~
300000fps, memory are greater than 128GB.
4. ultrasonic vibration auxiliary compression testing machine as described in claim 1, which is characterized in that the ultrasonic vibration generator
(3) performance parameter are as follows: 15~45KHz of vibration frequency, 0~22 μm of amplitude range.
5. ultrasonic vibration auxiliary compression testing machine as described in claim 1, which is characterized in that the ultrasonic amplitude transformer (4) and
The end face plane degree of lower pressing seat (5) is not more than 0.0002mm/mm, between ultrasonic amplitude transformer (4) end face and lower pressing seat (5) end face
The depth of parallelism be not more than 0.0002mm/mm.
6. ultrasonic vibration auxiliary compression testing machine as described in claim 1, which is characterized in that lifting device is screw pair
Mechanism, comprising:
Electric motor (9) is mounted on pedestal (1)；
Lead screw (10) is vertically installed on pedestal (1)；
Crossbeam (2), crossbeam (2) are provided with threaded hole and are cooperatively connected with lead screw (10), and ultrasonic vibration installation is mounted on the crossbeam
(2) on.
7. ultrasonic vibration auxiliary compression testing machine as claimed in claim 6, which is characterized in that the torsion of the electric motor (9)
Square is 100Nm~5000Nm；
The position precision that the crossbeam (2) moves up and down is better than 0.1 μm, and positional repeatability is better than 0.1 μm；
Lead screw (10) diameter is 15~40mm.
8. ultrasonic vibration auxiliary compression testing machine as claimed in claim 6, which is characterized in that the crossbeam (2), ultrasonic vibration
Generator (3), ultrasonic amplitude transformer (4), test specimen (8), lower pressing seat (5) and force snesor (6) form whole in crossbeam
(2) concentricity in total travel is better than 1:0.001.
9. ultrasonic vibration auxiliary compression testing machine as described in claim 1, which is characterized in that the power value observation system also wraps
Charge amplifier and data collecting card are included, which connects force snesor (6), data collecting card signal connection electricity
Lotus amplifier.
10. a kind of test method using any one ultrasonic vibration auxiliary compression testing machine of claim 1-9, feature
It is, includes the following steps:
Test specimen (8) is placed in lower pressing seat (5) upper surface；
Lifting device is adjusted, makes the bottom end of ultrasonic amplitude transformer (4) close to test specimen (8) upper surface；
Pass through the force value and strain value on power value observation system and strain monitoring system monitoring test specimen (8)；
Start lifting device, lifting device drives ultrasonic vibration installation at the uniform velocity to move down, and realizes test specimen (8) static compress；
After test specimen (8) is surrendered, start ultrasonic vibration installation, be superimposed ultrasonic vibration with static compress, realizes quilt
The compression of test block (8) ultrasonic wave added；
The power and strain in test specimen (8) ultrasonic wave added compression process are obtained by power value observation system and strain monitoring system
Data.
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