CN102183363B - Dynamic characteristic parameter test device and method of sliding guide rail junction surface - Google Patents

Dynamic characteristic parameter test device and method of sliding guide rail junction surface Download PDF

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CN102183363B
CN102183363B CN 201010622646 CN201010622646A CN102183363B CN 102183363 B CN102183363 B CN 102183363B CN 201010622646 CN201010622646 CN 201010622646 CN 201010622646 A CN201010622646 A CN 201010622646A CN 102183363 B CN102183363 B CN 102183363B
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normal
slide block
acceleration transducer
dynamic characteristic
fixed guide
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CN 201010622646
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CN102183363A (en
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袁军堂
王维友
汪振华
程寓
胡小秋
朱蕴璞
张华�
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南京理工大学
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Abstract

The invention relates to a dynamic characteristic parameter test device of a sliding guide rail junction surface, which can be simplified into a single degree of freedom system. The device comprises a base, an installation platform, a fixed guide rail, a wedge-shaped block, an inlaid strip, a sliding block, a plurality of piezoelectric type acceleration sensors, a vibration exciter, an elastic rope, an impedance head, a stand, a normal force applying bolt, a rubber ring, a charge amplifier, a data acquisition unit, a power amplifier and an electronic computer. Compared with the prior art, the dynamic characteristic parameter test device has the advantages that: the structure is compact, the test principle is distinct, dynamic characteristic parameters of the junction surface under different load states can be measured by adjusting the pretightening force of a normal force applying bolt, the vibration exciting force direction passes through the gravity of the sliding block during measurement so that vibration signals of the sliding block and the base can be measured simultaneously, the influence of the vibration signals of the base is eliminated when a frequency response function of a system is calculated, and the characteristics of high efficiency, high stability and high precision are achieved.

Description

Rail plate faying face dynamic characteristic parameter proving installation and method of testing thereof

Technical field

The present invention relates to a kind of Machine Joint Surfaces dynamic characteristic parameter proving installation and method of testing thereof, particularly a kind of rail plate faying face dynamic characteristic parameter proving installation and method of testing thereof.

Background technology

There are in a large number all kinds of Machine Joint Surfaces in physical construction, the ct clamping of these faying faces has important impact to the performance of physical construction, such as the people such as Burdekin pointed out that in lathe, the contact stiffness of faying face accounted for 60~80% of lathe global stiffness in 1979 in research paper.Therefore, Obtaining Accurate Machine Joint Surfaces dynamic characteristic parameter is the basic guarantee that carries out physical construction overall dynamics specificity analysis.At present, although set up the various kinetic models of Machine Joint Surfaces, also there is certain difficulty in obtaining of basic dynamic characteristic parameter (as rigidity, damping etc.).Rail plate is the functional part of the outstanding middle widespread use of lathe, therefore the be slidably connected mechanical characteristic integrally-built weak link of lathe often of face invents the rail plate faying face dynamic characteristic parameter proving installation that a kind of test philosophy is correct, mechanism is simple and measuring accuracy is high significant.

Document 1: Zhang Guangpeng, topaz is beautiful.Dynamic Analysis method and the application thereof of Machine Tools, mechanical engineering journal, 2002 (10), 38 (10): 114~117.Proposed to set up the kinetic model of guiding rail joint portion take the basic characteristic parameter of faying face as the basis, the analytic method of the dynamic perfromance of research Machine Tools.Try to achieve guide rail faying face dynamic characteristic parameter although analytical method can be more convenient, must possess more accurate Basic Characteristic Parameters of Joint Surfaces, and rail plate faying face contact condition is complicated, influence factor is more, therefore lacks the precision guarantee.

Summary of the invention

Technical matters solved by the invention be to provide a kind of have that test philosophy is correct, mechanism design is simple, measuring accuracy is high and can mensuration to the rail plate faying face dynamic characteristic parameter proving installation of the characteristics such as dynamic characteristic parameter.

The technical solution that realizes the object of the invention is: a kind of rail plate faying face dynamic characteristic parameter proving installation, comprise measuring table, charge amplifier, data acquisition unit, power amplifier, robot calculator, described measuring table comprises pedestal, mounting platform, fixed guide, wedge, panel, slide block, some piezoelectric acceleration transducers, vibrator, elastic threads, reluctance head, shelf, normal direction application of force bolt and rubber ring;

mounting platform is positioned at the top of pedestal, fixed guide is connected on mounting platform, this fixed guide compresses the location by wedge, rectangular shaped slider is set on fixed guide, this slide block is adjusted sideshake by panel, normal direction application of force bolt is pressed on slide block on mounting platform, between normal direction application of force bolt and slide block, rubber ring is set, vibrator hangs on the top of the shelf by elastic threads, the front end of vibrator connects reluctance head, when measuring, reluctance head connects threaded hole and connects with normal direction on slide block by double-screw bolt, described normal direction connects the center that threaded hole is positioned at the slide block upper surface, piezoelectric acceleration transducer is arranged on respectively on slide block and fixed guide by magnetic head, the force signal output terminal of reluctance head is connected with the input end of charge amplifier with the piezoelectric acceleration transducer output terminal, the charge amplifier output terminal is connected with the data acquisition unit input end, the USB port of data acquisition unit is connected by the usb data line with robot calculator, the input end of power amplifier is connected with the output terminal of data acquisition unit, the output terminal of power amplifier is connected with the input end of vibrator.

A kind of measuring method of rail plate faying face dynamic characteristic parameter proving installation comprises the following steps:

Step 1: rail plate, slide block, normal direction application of force bolt are installed, fixed guide to be measured is bolted on mounting platform, then moving slider is to the measuring position, adjust sideshake by panel, install at last normal direction application of force bolt, add rubber ring on the bolt of exerting pressure, regulate normal direction application of force bolt pretightening by torque spanner during measurement the rail plate faying face is applied normal load;

Step 2: piezoelectric acceleration transducer, vibrator and reluctance head are installed, are measured when being slidably connected the face normal dynamic characteristics and lay piezoelectric acceleration transducer at slide block and fixed guide upper surface; When measuring the faying face normal stiffness, reluctance head is arranged on normal direction and connects on threaded hole, then vibrator is connected on reluctance head by push rod;

step 3: to the connection of other proving installation, with piezoelectric acceleration transducer, vibrator, reluctance head, charge amplifier, data acquisition unit, power amplifier and robot calculator link up with corresponding data line and consist of whole test macro, the force signal output terminal that is reluctance head is connected with the input end of charge amplifier with the piezoelectric acceleration transducer output terminal, the charge amplifier output terminal is connected with the data acquisition unit input end, the USB port of data acquisition unit is connected by the usb data line with robot calculator, the input end of power amplifier is connected with the output terminal of data acquisition unit, the output terminal of power amplifier is connected with the input end of vibrator,

Step 4: test parameter setting, Vibration on Start-up and dynamic signal acquisition analytic system in robot calculator, carry out modeling and corresponding parameter setting, determine swept frequency range, the charge amplifier enlargement factor, the electric current of power amplifier and voltage, acceleration transducer and the reluctance head power sensor calibration factor;

Step 5: begin to measure, preserve test figure;

Step 6: test findings is processed and is analyzed, after measuring end, test findings processed and judged, investigating system's vibration shape, see and whether satisfy testing requirements, if system's vibration shape meets the demands, this time measure effectively, preserve test figure, carry out next step calculating, if the vibration shape does not meet the demands, after turning back to step 1 and again changing measurement parameter, check that each rig for testing is whether normal, test again;

Step 7: the bridge plate frequency response function X (ω) and rail plate frequency response function Y (ω) data that measure according to step 6, calculate equivalent single-mode system frequency response function H (ω) in Matlab7.0, so just can obtain according to formula (6) and formula (7) rigidity k and the damping c of the rail plate faying face of surveying.

Principle of the present invention is: the physical construction that rail plate is installed is a many-degrees of freedom system, and it is very difficult to adopt the many-degrees of freedom system theory to test the faying face dynamic characteristic parameter, therefore when design rail plate faying face dynamic characteristic parameter proving installation, it is simplified to single-mode system.Proving installation is mainly to be made of pedestal and rail plate pair, and design concept is: (1) rail plate self slide block has larger rigidity, and the mode sliding block that causes at the face that is slidably connected does not produce moderate finite deformation; (2) appropriate design slide block structure can obtain the steady vibration shape on the exciting force direction when slide block is encouraged.Proving installation just can be reduced to single-mode system like this, and for single-mode system, system stiffness and damping can be asked for by formula (1):

c=2mω nζ????????????????????(1)

Wherein m is mass of system, ω nBe system frequency, ξ is damping ratio.Just can calculate system stiffness and damping according to formula (1), i.e. rolling guide faying face rigidity and damping as long as therefore test out natural frequency and the damping ratio of system.

The present invention compared with prior art, its remarkable advantage is: (1) is reduced to proving installation the complexity that single-mode system greatly reduces test, and proving installation is simple, easily obtains accurately faying face dynamic characteristic test signal; (2) proving installation is carried out normal direction excitation, can this rail plate faying face normal dynamic characteristics parameter of Obtaining Accurate; When (3) carrying out the normal direction excitation at slide block upper surface center, the exciting force direction is by its center of gravity.When encouraging like this, slide block all can obtain the steady vibration shape on the exciting force direction, avoided the vibration shapes such as torsion and rollover, has improved the accuracy of parameter identification; When (4) testing, basic displacement is eliminated, made measurement model more realistic, test result is more accurate.

Description of drawings

Fig. 1 is rail plate faying face dynamic characteristic parameter proving installation overall construction drawing of the present invention.

Fig. 2 is the subssembly drawing of worktable of the present invention.

Fig. 3 is test system structure figure of the present invention.

Fig. 4 is single-degree-of-freedom vibration principle figure under harmonic excitation of the present invention, and wherein figure (a) does the simple harmonic oscillation illustraton of model for the basis, and figure (b) is mass force analysis figure.

Fig. 5 is the bending vibation mode picture of test case of the present invention.

Fig. 6 is test signal phase place of the present invention and amplitude figure, and wherein figure (a) is amplitude figure, and figure (b) is phase diagram.

Embodiment

A kind of rail plate faying face dynamic characteristic parameter proving installation, comprise measuring table, charge amplifier 14, data acquisition unit 15, power amplifier 16, robot calculator 17, described measuring table comprises pedestal 1, mounting platform 2, fixed guide 3, wedge 4, panel 5, slide block 6, some piezoelectric acceleration transducers 7, vibrator 8, elastic threads 9, reluctance head 10, shelf 11, normal direction application of force bolt 12 and rubber ring 13;

mounting platform 2 is positioned at the top of pedestal 1, fixed guide 3 is connected on mounting platform 2, this fixed guide compresses the location by wedge 4, rectangular shaped slider 6 is set on fixed guide 3, this slide block is adjusted sideshake by panel 5, normal direction application of force bolt 12 is pressed on slide block 6 on mounting platform 2, between normal direction application of force bolt 12 and slide block 6, rubber ring 13 is set, vibrator 8 is suspended on shelf 11 by elastic threads 9, the front end of vibrator 8 connects reluctance head 10, when measuring, reluctance head connects threaded hole and connects with normal direction on slide block 6 by double-screw bolt, described normal direction connects the center that threaded hole is positioned at slide block 6 upper surfaces, piezoelectric acceleration transducer 7 is arranged on respectively on slide block 6 and fixed guide 3 by magnetic head, the force signal output terminal of reluctance head 10 is connected with the input end of charge amplifier 14 with piezoelectric acceleration transducer 7 output terminals, charge amplifier 14 output terminals are connected with data acquisition unit 15 input ends, the USB port of data acquisition unit 15 is connected by the usb data line with robot calculator 17, the input end of power amplifier 16 is connected with the output terminal of data acquisition unit 15, the output terminal of power amplifier 16 is connected with the input end of vibrator 8.Described slide block 6 centers of gravity are the intersection point of normal direction exciting force direction and faying face.The quantity of described normal direction application of force bolt 12 is 2, and the line of described two normal direction application of force bolts 12 is parallel with the guide rail direction, and the center of line is positioned at the center of slide block 6 upper surfaces.The prefastening torque of the normal direction application of force bolt 12 of connection sliding block 6 and mounting platform 2 is adjustable.The quantity of the piezoelectric acceleration transducer 7 on slide block 6 is 15, and on rolling guide 3, the quantity of piezoelectric acceleration transducer 7 is 8.

Particularly, pedestal 1 is to be in the same place by a plurality of bolt-connections by two whole ironcastings with mounting platform 2, and fixed guide 3 specifications can require to carry out the selection of certain limit according to measuring.Fixed guide 3 is connected on mounting base 2, and slide block 6 is fixed by panel 4 and application of force bolt 12 and is connected with fixed guide 3, passes through normal direction application of force bolt 12 imposed loads between slide block 6 and mounting platform 2.Vibrator 8 is suspended on shelf 11 by elastic threads 9, and reluctance head 10 is connected with vibrator 8 by push rod, connects threaded hole by normal direction during the normal direction exciting of other end and slide block 6 links.Piezoelectric acceleration transducer 7 is arranged on respectively on slide block 6 and fixed guide 3 by magnetic head, and 15 piezoelectric acceleration transducers 7 are installed on slide block 6, and 8 piezoelectric acceleration transducers 7 are installed on fixed guide 3.Slide block 6 connects its design of centre of gravity the intersection point place of threaded hole axis and the face that is slidably connected by calculating in normal direction.

The force signal output terminal of above-mentioned reluctance head 10 is connected with b with the input end a of charge amplifier 14 respectively with piezoelectric acceleration transducer 7 output terminals, charge amplifier 14 output terminal c are connected with data acquisition unit 15 input ends, generally the force signal with reluctance head 10 accesses charge amplifier 14 first passages, and piezoelectric acceleration transducer 6 output signals access respectively 2~24 passages, wherein charge amplifier 14 is 4 passages, 6 of quantity, data acquisition unit 15 is 32 passages.The port f of data acquisition unit 15 is connected by the usb data line with robot calculator 17, the port f of data acquisition unit 15 both can receive the signal of robot calculator 17, the signal that gathers can be transferred to robot calculator 17 again and process, complete the interactive function of collection signal and operational order.The output port d of data acquisition unit 15 is connected with the input end of power amplifier 16, the swept-frequency signal that robot calculator 17 sends can be transferred to power amplifier 16, the output terminal e of power amplifier 16 is connected with the input end of vibrator 8, vibrator 8 can receive the swept-frequency signal from power amplifier 16, encourages thereby control 8 pairs of slide blocks 6 of vibrator.

In conjunction with Fig. 1 and Fig. 2, the ultimate principle of rail plate faying face dynamic characteristic parameter device for quick testing is based on single free oscillating system, regard mounting platform 2 and fixed guide integral body as basis, slide block 6 is regarded mass as, and regards faying face stiffness and damping between slide block and fixed guide as elasticity and damping element.System is under the effect of harmonic excitation power, and mounting platform 2 and slide block 6 show as translation and do not produce the distortion such as torsion, bending on the vibration shape.

In conjunction with Fig. 4, ultimate principle of the present invention is described, for the vibrational system that is consisted of by basis-spring-dampers-quality, when being subject to harmonic excitation power f, mass m does the used time, and its vibration equation can be expressed as formula (2):

m x · · + c ( x · - y · ) + k ( x - y ) = f - - - ( 2 )

In formula, m is component quality, and formula (2) is done to consist of the single-degree of freedom vibration equation with down conversion:

m ( x · · - y · · ) + c ( x · - y · ) + k ( x - y ) = f - m y · · - - - ( 3 )

When vibrational system is subject to the harmonic excitation masterpiece used time, simple harmonic oscillation all will occur in m and pedestal, therefore can establish f (t)=F (ω) e I ω t, x (t)=X (ω) e I ω t, y (t)=Y (ω) e I ω t, above three substitution formulas (3) can be got formula (4):

1 - mω 2 + jωc + k = X ( ω ) - Y ( ω ) F ( ω ) + m ω 2 Y ( ω ) - - - ( 4 )

The system frequency response function of order is H (ω)=(m ω 2+ j ω c+k) -1, basic frequency response function H Y(ω)=Y (ω)/F (ω), m and basic frequency response function phasor difference H (ω)=(m ω 2+ j ω c+k) -1, formula (4) can be expressed as formula (5):

H ( ω ) = H X - Y ( ω ) 1 + mω 2 H Y ( ω ) - - - ( 5 )

H in formula X-Y(ω) be m frequency response function and basic frequency response function phasor difference, H Y(ω) be basic frequency response function.H X-Y(ω) and H Y(ω) can be by measuring.Obtain like this frequency response function of equivalent single-mode system according to formula (5), then identify its natural frequency f n, dynamic stiffness is:

k eq = 4 mπ 2 f n 2 - - - ( 6 )

Damping c eqCan adopt half-power bandwidth method to ask for according to the frequency response function H of system (ω) that obtains:

c eq=2πmΔf????????????????(7)

In formula, Δ f is half-power bandwidth.

Below in conjunction with Fig. 1-3, a kind of rail plate faying face dynamic characteristic parameter method of testing of the present invention is described, concrete steps are as follows:

Step 1: rolling guide 3, slide block 6, normal direction application of force bolt 12 are installed.With fixed guide to be measured 3 by bolt-connection on mounting platform 2, then moving slider 6 is to the measuring position, adjust sideshake by panel 4, install at last normal direction application of force bolt 12, in order to reduce bolt to measuring the impact of rigidity, add rubber ring 13 on the bolt of exerting pressure, regulate normal direction application of force bolt 12 pretightning forces by torque spanner during measurement the rail plate faying face is applied normal load;

Step 2: piezoelectric acceleration transducer 7, vibrator 8 and reluctance head 10 are installed.When being slidably connected the face normal dynamic characteristics, measurement rationally places piezoelectric acceleration transducer 7 at slide block 6 and fixed guide 3 upper surfaces; When measuring the faying face normal stiffness, reluctance head 10 is arranged on normal direction and connects on threaded hole, then vibrator 8 is connected on reluctance head 10 by push rod; The quantity of the piezoelectric acceleration transducer 7 of placing on slide block 6 is 15, and the quantity of placing piezoelectric acceleration transducer 7 on rolling guide 3 is 8.

step 3: to the connection of other proving installation, with piezoelectric acceleration transducer 7, vibrator 8, reluctance head 10, charge amplifier 14, data acquisition unit 15, power amplifier 16 and the robot calculator 17 corresponding data lines of use link up and consist of whole test macro, the force signal output terminal that is reluctance head 10 is connected with the input end of charge amplifier 14 with piezoelectric acceleration transducer 7 output terminals, charge amplifier 14 output terminals are connected with data acquisition unit 15 input ends, the USB port of data acquisition unit 15 is connected by the usb data line with robot calculator 17, the input end of power amplifier 16 is connected with the output terminal of data acquisition unit 15, the output terminal of power amplifier 16 is connected with the input end of vibrator 8,

Step 4: test parameter setting.Start by vibration and dynamic signal acquisition analytic system in robot calculator 17, carry out modeling and corresponding parameter setting.Determine swept frequency range, charge amplifier enlargement factor, the electric current of power amplifier and voltage, acceleration transducer and the reluctance head power sensor calibration factor etc.;

Step 5: begin to measure, preserve test figure;

Step 6: test findings is processed and is analyzed, after measuring end, test findings processed and judged, investigating system's vibration shape, see and whether satisfy testing requirements, if system's vibration shape meets the demands, this time measure effectively, preserve test figure, carry out next step calculating, if the vibration shape does not meet the demands, after turning back to step 1 and again changing measurement parameter, check that each rig for testing is whether normal, test again;

Step 7: the bridge plate frequency response function X (ω) and rolling guide frequency response function Y (ω) data that measure according to step 6, calculate equivalent single-mode system frequency response function H (ω) in Matlab7.0, so just can obtain according to formula (6) and formula (7) rigidity k and the damping c of institute's survey rolling guide faying face.The required formula of calculated rigidity k is Calculating damping c formula used is c=2m ω nζ, in described formula, m is the quality of slide block 6, ω nBe system frequency, ξ is damping ratio.

Below in conjunction with embodiment, the present invention is done further detailed description:

Adopting the method that proposes in the present invention to rectangle---the rail plate faying face of rectangle cooperation 420mm * 110mm is depressed the normal dynamic characteristics parameter at the 0.1MPa face and is tested.Concrete testing procedure is as follows:

(1) rail plate, slide block, normal direction application of force bolt are installed.Install rail plate, slide block, normal direction application of force bolt by step 1 above, adopt torque spanner to regulate normal direction application of force bolt torque to predetermined value, each normal direction application of force bolt imposed load is 16.6Nm in this test.

(2) piezoelectric acceleration transducer, vibrator and reluctance head are installed, and piezoelectric acceleration transducer, vibrator, reluctance head, charge amplifier, data acquisition unit, power amplifier and robot calculator are linked up with corresponding data line, this experimental measurement be normal dynamic characteristics, therefore reluctance head connects threaded hole with the normal direction of bridge plate and links, and vibrator carries out exciting in normal direction to bridge plate.

(3) machinery and Constructional Modal Analysis MaCras module in Vibration on Start-up and dynamic signal acquisition analytic system V7.1, carry out modeling and measurement parameter setting.Energisation mode is sine sweep excitation and dynamometry, then carries out Geometric Modeling, and correction factor, engineering unit, path marking, fft block size, average time, time window processing function, analysis frequency etc. are set in measurement parameter.This measures sine sweep, and frequency range is made as 100Hz~600Hz, and sweep spacing is 2Hz.

(4) connect the power supply of each surveying instrument, begin to measure the acquisition test data.

(5) after measurement finishes, process in vibration and dynamic signal acquisition analytic system V7.1, by operations such as model frequency initial estimation, direction of measurement processing, equation of constraint processing, Mode Shape normalizing and observation vibration shape animations, can clearly reflect the effect of this measurement.

Fig. 5 is the bending vibation mode picture of this measurement, this is measured at the 368Hz place and obtains the comparatively stable translation vibration shape as seen from the figure, Fig. 6 is for calculating phase place and the amplitude figure of equivalent single-mode system frequency response function H (ω) through formula (5), Fig. 6 is reflected in that system is typical single-degree of freedom vibration in this frequency range, further illustrates thus accuracy and reliability that the present invention tests rolling guide rail joint surface dynamic characteristic parameters.

(6) obtain according to formula (6) and formula (7) that in this test, rolling guide faying face normal dynamic characteristics parameter rigidity and damping are respectively 7.484 * 10 8N/m 3With 8.08 * 10 4Ns/m 3Under this operating mode, the equivalent stiffness of unit area rail plate is 8.1 * 10 9N/m 3, the unit area equivalent damping is 8.75 * 10 5Ns/m 3

By top concrete test example, the method in employing the present invention has realized the measurement of rail plate faying face dynamic characteristic parameter.

Claims (7)

1. rail plate faying face dynamic characteristic parameter proving installation, it is characterized in that, comprise measuring table, charge amplifier [14], data acquisition unit [15], power amplifier [16], robot calculator [17], described measuring table comprises pedestal [1], mounting platform [2], fixed guide [3], wedge [4], panel [5], slide block [6], some piezoelectric acceleration transducers [7], vibrator [8], elastic threads [9], reluctance head [10], shelf [11], normal direction application of force bolt [12] and rubber ring [13];
mounting platform [2] is positioned at the top of pedestal [1], fixed guide [3] is connected on mounting platform [2], this fixed guide compresses the location by wedge [4], rectangular shaped slider [6] is set on fixed guide [3], this slide block is adjusted sideshake by panel [5], normal direction application of force bolt [12] is pressed on slide block [6] on mounting platform [2], between normal direction application of force bolt [12] and slide block [6], rubber ring [13] is set, vibrator [8] is suspended on shelf [11] by elastic threads [9], the front end of vibrator [8] connects reluctance head [10], when measuring, reluctance head connects threaded hole and connects with normal direction on slide block [6] by double-screw bolt, described normal direction connects the center that threaded hole is positioned at slide block [6] upper surface, piezoelectric acceleration transducer [7] is arranged on respectively on slide block [6] and fixed guide [3] by magnetic head, the force signal output terminal of reluctance head [10] is connected with the input end of charge amplifier [14] with piezoelectric acceleration transducer [7] output terminal, charge amplifier [14] output terminal is connected with data acquisition unit [15] input end, the USB port of data acquisition unit [15] is connected by the usb data line with robot calculator [17], the input end of power amplifier [16] is connected with the output terminal of data acquisition unit [15], the output terminal of power amplifier [16] is connected with the input end of vibrator [8].
2. rail plate faying face dynamic characteristic parameter proving installation according to claim 1, is characterized in that, slide block [6] center of gravity is the intersection point of normal direction exciting force direction and faying face.
3. rail plate faying face dynamic characteristic parameter proving installation according to claim 1, it is characterized in that, the quantity of normal direction application of force bolt [12] is 2, the line of described two normal direction application of force bolts [12] is parallel with the guide rail direction, and the center of line is positioned at the center of slide block [6] upper surface.
4. according to claim 1,2 or 3 described rail plate faying face dynamic characteristic parameter proving installations, is characterized in that, the prefastening torque of the normal direction application of force bolt [12] of connection sliding block [6] and mounting platform [2] is adjustable.
5. according to claim 1,2 or 3 described rail plate faying face dynamic characteristic parameter proving installations, it is characterized in that, the quantity of the piezoelectric acceleration transducer [7] on slide block [6] is 15, and the quantity of the upper piezoelectric acceleration transducer [7] of fixed guide [3] is 8.
6. the measuring method based on the described rail plate faying face of claim 1 dynamic characteristic parameter proving installation, is characterized in that, comprises the following steps:
Step 1: fixed guide [3], slide block [6], normal direction application of force bolt [12] are installed, fixed guide to be measured [3] is bolted on mounting platform [2], then moving slider [6] is to the measuring position, adjust sideshake by panel [4], install at last normal direction application of force bolt [12], add rubber ring [13] on normal direction application of force bolt, regulate normal direction application of force bolt [12] pretightning force by torque spanner during measurement the rail plate faying face is applied normal load;
Step 2: piezoelectric acceleration transducer [7], vibrator [8] and reluctance head [10] are installed, are measured when being slidably connected the face normal dynamic characteristics and lay piezoelectric acceleration transducer [7] at slide block [6] and fixed guide [3] upper surface; When measuring the faying face normal stiffness, reluctance head [10] is arranged on normal direction and connects on threaded hole, then vibrator [8] is connected on reluctance head [10] by push rod;
step 3: to the connection of other proving installation, with piezoelectric acceleration transducer [7], vibrator [8], reluctance head [10], charge amplifier [14], data acquisition unit [15], power amplifier [16] and robot calculator [17] link up with corresponding data line and consist of whole test macro, the force signal output terminal that is reluctance head [10] is connected with the input end of charge amplifier [14] with piezoelectric acceleration transducer [7] output terminal, charge amplifier [14] output terminal is connected with data acquisition unit [15] input end, the USB port of data acquisition unit [15] is connected by the usb data line with robot calculator [17], the input end of power amplifier [16] is connected with the output terminal of data acquisition unit [15], the output terminal of power amplifier [16] is connected with the input end of vibrator [8],
Step 4: test parameter setting, Vibration on Start-up and dynamic signal acquisition analytic system in robot calculator [17], carry out modeling and corresponding parameter setting, determine swept frequency range, the charge amplifier enlargement factor, the electric current of power amplifier and voltage, acceleration transducer and the reluctance head power sensor calibration factor;
Step 5: begin to measure, preserve test figure;
Step 6: test findings is processed and is analyzed, after measuring end, test findings processed and judged, investigating system's vibration shape, see and whether satisfy testing requirements, if system's vibration shape meets the demands, this time measure effectively, preserve test figure, carry out next step calculating, if the vibration shape does not meet the demands, after turning back to step 1 and again changing measurement parameter, check that each rig for testing is whether normal, test again;
Step 7: the bridge plate frequency response function X (ω) and rail plate frequency response function Y (ω) data that measure according to step 5, calculate equivalent single-mode system frequency response function H (ω) in Matlab7.0, so just can calculate rigidity k and the damping c of the rail plate faying face of surveying, the required formula of calculated rigidity k is Calculating damping c formula used is c=2m ω nζ, in described formula, m is the quality of slide block [6], ω nBe system frequency, ξ is damping ratio.
7. the measuring method of rail plate faying face dynamic characteristic parameter proving installation according to claim 6, it is characterized in that, quantity at the upper piezoelectric acceleration transducer [7] of placing of slide block [6] in step 2 is 15, is 8 in the upper quantity of placing piezoelectric acceleration transducer [7] of fixed guide [3].
CN 201010622646 2010-12-30 2010-12-30 Dynamic characteristic parameter test device and method of sliding guide rail junction surface CN102183363B (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201037803Y (en) * 2007-03-28 2008-03-19 清华大学 Rolling line guide rail accessory static rigidity experiment platform

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1061664A (en) * 1996-08-15 1998-03-06 Nippon Thompson Co Ltd Direct acting rolling guide unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201037803Y (en) * 2007-03-28 2008-03-19 清华大学 Rolling line guide rail accessory static rigidity experiment platform

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JP特开平10-61664A 1998.03.06
伍良生等.数控机床滚动导轨力学性质的实验研究.《制造技术与机床》.2006,(第7期),26-28. *
杨家华等.平面结合面参数识别的研究.《北京工业大学学报》.2000,第26卷(第3期),20-23. *

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