CN106885662A - Footpath axial composite-rotor Non-contact loader and machine tool chief axis rigidity testing system - Google Patents
Footpath axial composite-rotor Non-contact loader and machine tool chief axis rigidity testing system Download PDFInfo
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- CN106885662A CN106885662A CN201710093566.7A CN201710093566A CN106885662A CN 106885662 A CN106885662 A CN 106885662A CN 201710093566 A CN201710093566 A CN 201710093566A CN 106885662 A CN106885662 A CN 106885662A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
- G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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Abstract
The invention discloses a kind of footpath axial composite-rotor Non-contact loader and a kind of machine tool chief axis rigidity testing system with the Non-contact loader, the Non-contact loader includes radial loaded part and axially loaded part, the radial loaded part includes being fixed on the radial coil of radial core, the axially loaded part includes being fixed on the axial coil of axial iron core, prod in the test system is set in a non contact fashion with the radial coil and the axial coil, the radial coil forms closed magnetic circuit with the prod, the axial coil forms closed magnetic circuit with the prod, three-dimensional dynamometer in the test system is tested the radial load of the prod with axial force；The invention provides a set of for studying the experimental provision that axial cutting force influences on machine tool running main shaft bending stiffness, for the dynamic property for improving machine tool chief axis provides laboratory facilities and method.
Description
Technical field
The present invention relates to machine dynamic performance detection field, more particularly to a kind of contactless loading of footpath-axial composite-rotor
Device and machine tool chief axis rigidity testing system.
Background technology
High speed, machining high-precision are the developing direction of machinery manufacturing industry, and the raising of Workpiece Machining Accuracy is depended on
Research to machining Affecting Factors of Accuracy.At present, the main cause of restriction machine cut machining accuracy is to vibrate, including master
Outer vibration source of regenerative chatter and machine being relatively also easy to produce in forced vibration, working angles that the mass unbalance of axle causes etc..It is right
It is the important channel for improving cutting precision in the prediction of machine tool chief axis forced vibration, and the precision predicted often is limited to fail to examine
Consider the changes of the factor under motion state such as main axis stiffness, damping.Machine tool chief axis are when rotating due to the influence of centrifugal force, main shaft
Pressure with handle of a knife faying face can weaken, and the contact stiffness of faying face weakens, so that the bending stiffness of spindle unit can be weakened, this
Outward, because bearing is the weak link of spindle unit rigidity, bearings at both ends is in inside and outside centrifugal force and gyro power during main axis
In the presence of square, bearing rigidity can also change, so as to can also influence the bending stiffness of spindle unit.Main shaft is in the middle temperature of rotation process
The influence to main shaft bending stiffness is risen also to can not be ignored.
As described above, machine tool spindles bend stiffness in the case of operating is change, and influence bending stiffness
Principal element has：Rotating speed, temperature etc..Due in machine cut process main shaft by radially, axially, tangential three-dimensional cutting
Power, research finds that the axial dynamic cutting force suffered by main shaft can strengthen the ct clamping of handle of a knife and main shaft faying face, right
Bending stiffness under machine tool chief axis working order produces large effect, and the machine tool chief axis for how testing rotation are subject to footpath-axial direction
During combined cut power, the change of Machine Tool Spindle Bending Stiffness is problem demanding prompt solution.
The content of the invention
The object of the invention is exactly lathe when solving how to test the machine tool chief axis of rotation by footpath-axial composite-rotor cutting force
The change of main shaft bending stiffness this problem.
Technical problem of the invention is solved by following technical scheme：
A kind of footpath-axial composite-rotor Non-contact loader, including cover plate, base, installing plate, radial loaded part and axial direction
Loading section, the radial loaded part and axially loaded part are separately positioned on base, and the cover plate adds with the radial direction
Carry part to connect, the installing plate is connected with axially loaded part, the radial loaded part and axially loaded be partially installed on
On the base.
Technical problem of the invention is also solved by following technical scheme：
A kind of machine tool chief axis rigidity testing system, including platen, footpath-axial composite-rotor Non-contact loader, survey
Coupon, displacement sensor component, three-dimensional dynamometer；The footpath-axial composite-rotor Non-contact loader is arranged on the lathe worker
Make on platform, the prod is arranged on the inner chamber of the footpath-axial composite-rotor Non-contact loader, institute's displacement sensors group
Part, the three-dimensional dynamometer are installed on the platen.
Preferably, the radial loaded part includes radial coil, radial core and support, and the radial coil is located at institute
State in radial core, the radial core is arranged on the support.
Preferably, the radial coil includes four discrete parts, and the radial coil is arranged in the radial core；
The first fixture of the radial core is on the support；First fixture is flat key；
The radial core is by silicon steel sheet stack into mutual insulating between the silicon steel sheet.
Preferably, the axially loaded part includes axial coil, axial iron core and axially mounted plate, the axial coil
It is fixed in axial iron core, the axial iron core is arranged on the axially mounted plate.
Preferably, the axial iron core is respectively disk-like accessory with the radial core.
Preferably, the loading surface of the axial iron core is plane, and the loading surface of the radial core is with certain curvature
Inner arc surface.
Preferably, the displacement sensor component includes displacement transducer, displacement transducer installing plate, fine adjustment stage, micro-
Leveling platform installing plate, the fine adjustment stage is used for the position of accurate adjustment displacement transducer, and institute's displacement sensors are arranged on institute
On displacement sensors installing plate, institute's displacement sensors installing plate is arranged in the fine adjustment stage, the fine adjustment stage peace
On the fine adjustment stage installing plate, the fine adjustment stage installing plate is arranged on platen.
Preferably, institute's displacement sensors are laser displacement sensor, and the fine adjustment stage can make the displacement sensing
Device does small movement in the x, y, z-directions, and the probe of institute's displacement sensors is near the end of prod.
Preferably, described three-dimensional dynamometer one end is connected with footpath-axial composite-rotor loading, and the other end is fixed on lathe work
It is connected with the loader installing plate on platform, for measuring radial load and axial force suffered by prod.
Preferably, one end of the prod is connected with machine tool chief axis, and the other end is placed in footpath-axial composite-rotor loader
Inner chamber center position, with footpath-axial composite-rotor loader noncontact.
Preferably, the loading surface of the radial core and the prod, the loading surface of the axial iron core and the survey
There is uniform gap, the gap is 0.8mm-1.2mm between coupon.
Preferably, the machine tool chief axis rigidity testing system also includes signal acquisition and conditioning system, the signal acquisition
It is connected with institute displacement sensors, three-dimensional dynamometer respectively with conditioning system, the signal acquisition receives displacement with conditioning system
The signal of sensor and three-dimensional dynamometer, and the data transfer that will be collected is to being processed in computer.
The beneficial effect that the present invention is compared with the prior art is：
A kind of footpath-axial composite-rotor Non-contact loader of the invention and machine tool chief axis rigidity testing system, there is provided one
Cover for studying the experimental provision that axial cutting force influences on machine tool running main shaft bending stiffness, simulated machine tool actual cut process
Apply a controllable contactless axial force to main shaft, while applying a contactless radial load, main shaft institute can be obtained
Main shaft bending stiffness is influenceed by dynamic axial power, tachometer value, for the dynamic property for improving machine tool chief axis provides experiment hand
Section and method.
Brief description of the drawings
Fig. 1, Fig. 2 are the overall assembling figures of machine tool chief axis rigidity testing system of the present invention；
Fig. 3 is the displacement transducer scheme of installation of machine tool chief axis rigidity testing system of the present invention；
Fig. 4 is footpath of the present invention-axial composite-rotor Non-contact loader structural decomposition diagram；
Fig. 5 is the axially loaded structural representation of machine tool chief axis rigidity testing system of the present invention；
Fig. 6 is the radial direction assembling structure schematic diagram of machine tool chief axis rigidity testing system of the present invention；
Fig. 7 is the radial loaded schematic diagram of machine tool chief axis rigidity testing system of the present invention；
Fig. 8 is the axially loaded schematic diagram of machine tool chief axis rigidity testing system of the present invention；
Fig. 9 is the signal transacting schematic diagram of machine tool chief axis rigidity testing system of the present invention；
Figure 10 is the testing process block diagram of machine tool chief axis rigidity testing system of the present invention.
Specific embodiment
The overall assembling figure of machine tool chief axis rigidity testing system of the present invention as shown in Figure 1, 2, including platen 5, footpath-
Axial composite-rotor Non-contact loader 4, prod 3, displacement sensor component, three-dimensional dynamometer component 7；
The working portion of prod 3 is cylindric；
Footpath-axial composite-rotor loader 4 is arranged on the workbench 5 of vertical machine 1, one end and the machine tool chief axis 2 of prod 3
It is connected, the other end is placed in the inner chamber center position of footpath-axial composite-rotor loader 4, is not contacted with footpath-axial composite-rotor loader 4.
Displacement sensor component is arranged on the workbench 5 of lathe 1 by sensor displacement 6, the probe of displacement transducer 6
The face of cylinder of test lead 3 should be close to, and ensures that displacement measurement direction is consistent with prod force in radial direction as far as possible.
The one end of three-dimensional dynamometer component 7 is connected with the loader installing plate of footpath-axial composite-rotor loader 4, and the other end is solid
It is scheduled on platen 5, for measuring radial load and axial force suffered by prod 3.
Displacement sensor component as shown in figure 3, including：Displacement transducer installing plate 18, fine adjustment stage 19, fine adjustment stage peace
Dress plate 20, fine adjustment stage 19 can in the x, y, z-directions do small movement, for the position of accurate adjustment displacement transducer 6,
Displacement transducer 6 is arranged on displacement transducer installing plate 18, and displacement transducer installing plate 18 is arranged in fine adjustment stage 19, micro-
Leveling platform 19 is arranged on fine adjustment stage installing plate 20, and the fine adjustment stage installing plate 20 is arranged on platen 5.Displacement
The probe of sensor 6 is close to the end of prod 3, by adjusting fine adjustment stage 19 to obtain optimal measurement in measurement process
Point.
Displacement transducer 6 is laser displacement sensor.
Footpath-structural representation of axial composite-rotor Non-contact loader 4 is as shown in figure 4, including cover plate 8, radial coil 9, put down
Key 10, radial core 11, support 12, base 13, axially mounted plate 14, axial coil 15, axial iron core 16, installing plate 17, footpath
To coil 9, radial core 11, the composition radial loaded part of support 12.
Cover plate 8, radial core 11, support 12, base 13, axially mounted plate 14, axial coil 15, axial iron core 16, peace
Dress plate 17 is all disk-like accessory, is all set on cover plate 8, support 12, base 13, axially mounted plate 14, axial iron core 16, installing plate 17
There is mounting hole, radial coil 9 is made up of the part of identical four, and four uniform bossy bodies are distributed with inside radial core 11, point
Not Yong Yu coiling radial coil 9, support 12 be disk-like accessory, its endoporus aperture be equal to radial core 11 external diameter, which is provided with
The connecting hole being connected with cover plate 8 and the connecting hole being connected with base 13, the two ends of base 13 are distributed with mounting hole, one end and support
12 are connected, and the other end is connected with installing plate 17, and axial iron core 16 is also for disk-like accessory axial direction coil 15 is wound in axial iron core 16
On the cylinder in portion, axial iron core 16 is arranged on axially mounted plate 14.
Axially loaded modular construction is as shown in figure 5, including axially mounted plate 14, axial coil 15, axial iron core 16, axial direction
Coil 15 is inserted in axial iron core 16, and fixes axial coil 15 with epoxide-resin glue, will package the axial iron core of axial coil 15
16 are arranged on axially mounted plate 14 by mounting hole, and axially mounted plate 14 is fixed on base 13, and base 13 is arranged on to be installed
On plate 17；Radial coil 9 moves into radial core 11 and then radial core 11 is inserted in support 12, and flat key 10 is used to prevent radially
Relative rotation of the iron core 11 in support 12, cover plate 8 is arranged on support 12, then support 12 is installed on base 13.
Assemble sequence is that first loader installing plate 17 is arranged on three-dimensional dynamometer 7, then axially mounted plate 14 is installed
On base 13, axial coil 15 is inserted in axial iron core 16, and is fixed with epoxide-resin glue, will package the axial direction of axial coil 15
Iron core 16 is arranged on axially mounted plate 14 according to direction as shown in the figure, then base 13 is arranged on loader installing plate 17；
The above-mentioned installation for completing axially loaded part, here is the installation of radial loaded part：Radial coil 9 is moved into radial core
Then 11 be inserted in support 12 radial core 11, and flat key 10 is used to prevent relative rotation of the radial core 11 in support 12,
Support 12 is installed on base 13 again, finally cover plate 8 is arranged on support 12.
Radial coil 9 moves into radial core 11, is used to apply radial load；Axial coil 15 is enclosed within axial iron core 16, is used
To apply axial force；The loading surface of radial core 11 is the inner arc surface with certain curvature, and the loading surface of axial iron core 16 is
Plane.
Fig. 6 is radial loaded structural representation, as illustrated, during prod 3 stretches into radial core 11, keeping between the two
Uniform gap.Because gap width is a key factor of influence electromagnetism loading force size, crossing conference causes electromagnetism loading force too
It is small, it is too small that centering can be caused difficult.
In order to ensure that loading is effective, the loading surface of radial core 9 should be in 0.8mm-1.2mm, to protect with the spacing of prod 3
The uniform of gap is demonstrate,proved, the iron core surface relative with prod 3 should be machined with certain radian.When being powered to radial coil 9, footpath
The magnetic line of force 22 of a branch of closure is formed to iron core 11, gap, prod 3.As shown in fig. 7, between radial core 11 and prod 3
Produce a magnetic force F for radial directionr, the suffered radial cutting force in actual cut of simulated machine tool main shaft 2.
Axial coil 15 is wound on axial iron core 16, the loading surface of axial iron core 16 and the shaft end interplanar of prod 3
Distance will be also controlled in 0.5mm-2.5mm.When being powered to axial coil 15, shape between axial iron core 16, gap, prod 3
Into the magnetic line of force 21 of a branch of closure, a magnetic force F for axial direction is produced between axial iron core 16 and prod 3a, the direction of magnetic force is such as
Shown in Fig. 8, the suffered axial cutting force in actual cut of simulated machine tool main shaft 2.
Due to that in the magnetic field of change eddy current effect can be produced to produce, the stress surface of radial core 11 can form current vortex, electricity
The formed magnetic field of vortex can not only weaken former magnetic field, and its fuel factor can limit the rotating speed of radial core 11, this external magnetic field
What can also be become in the environment of high temperature is unstable, and permeability magnetic material may lose magnetism suddenly moment.In view of above-mentioned a variety of
Reason, the force-bearing surfaces application silicon steel sheet stack of radial core 11 is into mutual insulating between steel disc.
In order that can produce magnetic force between prod 3 and radial direction and axial composite-rotor loading and measurement apparatus 4, prod need to
From ferromagnetic material (iron, cobalt, nickel or its alloy).
Can be had according to different main shaft type selecting standard test plugs, i.e. prod 3, its common type：BT、HSK、SK
Deng, this select BT prods.It is required that prod has circularity and concentricity higher.
The signal transacting schematic diagram of main axis stiffness test system as shown in figure 9, data Collection ＆ Processing System 23 respectively with
Laser displacement sensor 6, three axis force dynamometer 7 are connected, and collection force signal and displacement signal and being input in computer 24 is carried out
Data processing is measuring the influence of axial force, the speed of mainshaft to main shaft flexural deformation.
Laser displacement sensor is connected to data acquisition and procession system with the signal of three-dimensional force measuring instrument by data line
System 23, is acquired and processes to signal, by the software section and hardware components of drive connection test system, by what is collected
Data transfer is processed in computer 24.
The test flow chart of machine tool chief axis rigidity testing system as shown in Figure 10, is comprised the following steps：
S1, it is powered to footpath-axial composite-rotor Non-contact loader；
S2, be powered after in radial coil, radial core, estimate rod between form a closed magnetic circuit, produce radial electromagnetic force,
In axial coil, axial iron core, estimate rod between form another closed magnetic circuit, produce axial electromagnetic force；Carry out S3, S4 two simultaneously
Step；
S3, the force value of three-dimensional dynamometer detection lathe main shaft diameter-axial direction；
Machine tool chief axis under S4, rotary state produce deformation, and displacement transducer detects the radial displacement value of machine tool chief axis；
S5, force value, radial displacement value according to the footpath-axial direction for detecting, are calculated according to Rigidity Calculation formula, are obtained
Main shaft bending stiffness.
Footpath-axial composite-rotor Non-contact loader and machine tool chief axis rigidity according to embodiments of the present invention is detailed below
The appraisal procedure that axial force influences on flexural deformation in test system.
, wherein it is desired to explanation, appraisal procedure is the committed step of machine tool capability assessment, assessment mode and experimentation
The concrete scheme for being used is closely related.
First, prod 3 is impossible to be a preferable cylinder that its own always has one in actual use
Fixed rough surface, and always there is certain turn error in actual turning course, and these problems can all be made
Into the measurement error in test process.The precision of general laser displacement sensor is all higher, and (general resolution ratio is several micro-
Rice), it is sufficient to wherein rough feature is measured, but needs to carry out to calculate to eliminate manufacturing and fixing error accordingly.Additionally,
In order to reduce influence of the machine tool chief axis thermal stress to experimental result, need to carry out 30min or so to machine tool chief axis before measurement data
Idle warm-up.
This experimental procedure is broadly divided into two parts：1) in the case of different rotating speeds, machine tool chief axis in the case of radial load are only added
The measurement of flexural deformation；2) in the case of different rotating speeds, while applying the survey of machine tool chief axis flexural deformation when radial load and axial force
Amount.
1) in the case of different rotating speeds, the measurement of machine tool chief axis flexural deformation in the case of radial load is only added
The rotating speed of machine tool chief axis is gradually adjusted to n by 0r/min1R/min is logical to coil (radial direction) after idle running 30min
Electricity, in order to obtain multi-group data, changes the size of coil (radial direction) current value, to apply the footpath of different amplitudes and frequency to main shaft
Xiang Li, multigroup radial load and radial displacement value { F are obtained by signal acquisition and conditioning systemw1k},{δw1k, k=1,2,
3m, sample frequency is greater than 2 times of signal frequency, typically takes 5-10 times, also same below；To { Fw1k},{δw1kSequence
Row carry out discrete Fourier transform (DTFT) respectively, can obtain：
{Fw1k(w)},{δw1k(w) }, k=1, the ratio of 2,3m power and displacement：Fw1k(w)/δw1kW () is frequency
Rigidity value under rate domain, i.e.,：Kw1k(w)=Fw1k(w)/δw1k(w), k=1,2,3...m change tachometer value, when rotating speed is n2
Measurement above Shi Chongfu can obtain Kw2k(w)=Fw2k(w)/δw2k(w), k=1,2,3...m；It should be noted that each speed
The spacing of measurement point will be evenly distributed, and measurement range covers conventional cutting speed section.5 tachometric survey points of this experimental selection,
Can obtain：
{Fwλk(w)},{δwλk(w) }, λ=1,2,3,4,5, k=1,2,3m corresponding rigidity values are：
Kwλk(w)=Fw2k(w)/δw2k(w), λ=1,2,3,4,5, k=1,2,3...m
2) in the case of different rotating speeds, while apply the measurement of machine tool chief axis flexural deformation when radial load and axial force similarly,
The rotating speed of machine tool chief axis is gradually adjusted to n by 0r/min1R/min, coil (radial direction) and coil (axial direction) are given after idle running 30min
It is powered simultaneously, in order to study influence of the axial force to flexural deformation, and in view of radial load in tool cutting process and axial direction
The change of power is consistent, so it is M that axial force is obtained when certain current value is passed to coil (axial direction)1Change coil
To obtain the radial load of different amplitudes and frequency, the frequency of radial load is consistent the electric current of (radial direction) with the frequency of axial force,
If cambered axle now is to recombination coefficientMeasurement can be obtained：(M1,Ff11k,δ11k), k=1,2,
3m, to { Ff11k}{δ11k, i=1,2,3m carry out DTFT conversion can obtain { Ff11k(w)}{δ11k(w) }, k=1,
2,3m, the rigidity calculated under frequency domain can be obtained：
Kf11k(w)=Ff11k(w)/δ11k(w), k=1,2,3...m
Change axial force is M2, can similarly obtain：Kf12k(w)=Ff12k(w)/δ12k(w), k=1,2,3...m
Measuring 5 groups of data can obtain：Kf1jk(w)=Ff1jk(w)/δ1jk(w), j=1,2,3,4,5, k=1,2,3...m
It should be noted that in order to 1) with comparability, 2) frequency of radial load that is applied and amplitude and turn
The selection of fast measurement point with it is 1) identical；Similarly, when rotating speed is n2, apply same axial force in the case of, can obtain：Kf2jk(w)=
Ff2jk(w)/δ2jkW (), j=1,2,3,4,5, k=1,2,3...m measure 5 groups of data and can obtain successively：Kfλjk(w)=Ffλjk(w)/
δλjk(w), λ=1,2,3,4,5, j=1,2,3,4,5, k=1,2,3...m
With KwλkW () is comparative run, with KfλjkW comparing for (), analyzes under same rotating speed (i.e. same λ), when change axial direction
Force value (changesjValue) when, two magnitude relationships of value, it can be found that Kwλk(w)≤KfλjkW () can show that axial force is enhanced
Bending stiffness, reduces flexural deformation, at the same can research and analyse axial force change and velocity variations to this enhancing
The influence of effect.
Sum it up, the footpath of the embodiment of the present invention-axial composite-rotor Non-contact loader and machine tool chief axis rigidity test system
System there is provided a set of solution experimental provision for being influenceed on main shaft flexural deformation of machine tool chief axis axial force, can measure the speed of mainshaft,
Apply influence of the axial force to main shaft flexural deformation, be conducive to the improvement of machine dynamic performance.
Above content is to combine specific/preferred embodiment further description made for the present invention, it is impossible to
Assert that specific implementation of the invention is confined to these explanations.Come for general technical staff of the technical field of the invention
Say, without departing from the inventive concept of the premise, its embodiment that can also have been described to these makes some replacements or modification,
And these are substituted or variant should all be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of footpath-axial composite-rotor Non-contact loader, it is characterised in that：Including cover plate, base, installing plate, radial loaded
Part and axially loaded part, the radial loaded part and axially loaded part be separately positioned on base, the cover plate with
Radial loaded part connection, the installing plate is connected with axially loaded part, the radial loaded part and axially loaded
It is partially installed on the base.
2. Non-contact loader according to claim 1, it is characterised in that：The radial loaded part includes RADIAL
Circle, radial core and support, the radial coil are located in the radial core, and the radial core is arranged on the support
On；
The axially loaded part includes axial coil, axial iron core and axially mounted plate, and the axial coil is fixed on axial direction
In iron core, the axial iron core is arranged on the axially mounted plate.
3. Non-contact loader according to claim 2, it is characterised in that：The radial coil includes discrete four
Point, the radial coil is arranged in the radial core；
The first fixture of the radial core is on the support；First fixture is flat key；
The radial core is by silicon steel sheet stack into mutual insulating between the silicon steel sheet；
The axial iron core is respectively disk-like accessory with the radial core；
The loading surface of the axial iron core is plane, and the loading surface of the radial core is the inner arc surface with certain curvature.
4. according to claim 1-3 any one Non-contact loader a kind of machine tool chief axis rigidity testing system, its
It is characterised by：Including platen, footpath-axial composite-rotor Non-contact loader, prod, displacement sensor component, three-dimensional
Dynamometer；The footpath-axial composite-rotor Non-contact loader is arranged on the platen, and the prod is arranged on institute
The inner chamber of footpath-axial composite-rotor Non-contact loader is stated, the displacement sensor component, the three-dimensional dynamometer are installed in institute
State on platen.
5. test system according to claim 4, it is characterised in that：The displacement sensor component includes displacement sensing
Device, displacement transducer installing plate, fine adjustment stage, fine adjustment stage installing plate, the fine adjustment stage are used for accurate adjustment displacement sensing
The position of device, institute's displacement sensors are arranged on institute's displacement sensors installing plate, and institute's displacement sensors installing plate is installed
In the fine adjustment stage, the fine adjustment stage is arranged on the fine adjustment stage installing plate, the fine adjustment stage installing plate peace
On platen.
6. test system according to claim 5, it is characterised in that：Institute's displacement sensors are laser displacement sensor；
The fine adjustment stage can make the displacement transducer do small movement, the spy of institute's displacement sensors in the x, y, z-directions
The end of the nearly prod of head rest.
7. test system according to claim 4, it is characterised in that：Described three-dimensional dynamometer one end and footpath-axial composite-rotor
Loading is connected, and the other end is fixed on platen and is connected with the loader installing plate, for measuring suffered by prod
Radial load and axial force.
8. test system according to claim 4, it is characterised in that：Described prod one end is connected with machine tool chief axis,
The other end is placed in the inner chamber center position of footpath-axial composite-rotor loader, with footpath-axial composite-rotor loader noncontact.
9. test system according to claim 8, it is characterised in that：The loading surface of the radial core and the test
Uniform gap is respectively provided between rod, the loading surface of the axial iron core and the prod, the gap is 0.5mm-2.5mm.
10. test system according to claim 4, it is characterised in that：The machine tool chief axis rigidity testing system also includes
Signal acquisition and conditioning system, the signal acquisition and conditioning system are connected with institute displacement sensors, three-dimensional dynamometer respectively,
The signal acquisition receives the signal of displacement transducer and three-dimensional dynamometer with conditioning system, and the data transfer that will be collected is arrived
Processed in computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710093566.7A CN106885662B (en) | 2017-02-21 | 2017-02-21 | Diameter-axial composite-rotor Non-contact loader and machine tool chief axis rigidity testing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710093566.7A CN106885662B (en) | 2017-02-21 | 2017-02-21 | Diameter-axial composite-rotor Non-contact loader and machine tool chief axis rigidity testing system |
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| CN106885662A true CN106885662A (en) | 2017-06-23 |
| CN106885662B CN106885662B (en) | 2019-05-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764537A (en) * | 2017-11-08 | 2018-03-06 | 中国航空工业集团公司金城南京机电液压工程研究中心 | The non-contact axial force loading device of one kind centering and method |
| CN108692896A (en) * | 2018-05-07 | 2018-10-23 | 北京科技大学 | A kind of non-contact air film loading device suitable for high-speed main spindle rigidity test |
| CN109632218A (en) * | 2018-12-17 | 2019-04-16 | 清华大学深圳研究生院 | The non-contact loader of main shaft radial force and loading system under a kind of machine tool running state |
| CN110967129A (en) * | 2019-12-05 | 2020-04-07 | 中国航发四川燃气涡轮研究院 | High-temperature rotor system axial force testing system and method |
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