CN106885662B - Diameter-axial composite-rotor Non-contact loader and machine tool chief axis rigidity testing system - Google Patents
Diameter-axial composite-rotor Non-contact loader and machine tool chief axis rigidity testing system Download PDFInfo
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- CN106885662B CN106885662B CN201710093566.7A CN201710093566A CN106885662B CN 106885662 B CN106885662 B CN 106885662B CN 201710093566 A CN201710093566 A CN 201710093566A CN 106885662 B CN106885662 B CN 106885662B
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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 diameter-axial composite-rotor Non-contact loader and with a kind of machine tool chief axis rigidity testing system of the Non-contact loader, the Non-contact loader includes radial loaded part and axially loaded part, the radial loaded part includes the radial coil for being fixed on radial core, the axially loaded part includes the axial coil for being fixed on axial iron core, prod in the test macro is arranged in a non contact fashion with the radial coil and the axial coil, the radial coil and the prod form closed magnetic circuit, the axial direction coil and the prod form closed magnetic circuit, three-dimensional dynamometer in the test macro tests the radial force of the prod with axial force；The experimental provision that the present invention provides a set of to influence machine tool running main shaft bending stiffness for studying axial cutting force provides laboratory facilities and method to improve the dynamic property of machine tool chief axis.
Description
Technical field
The present invention relates to machine dynamic performance detection fields, more particularly to a kind of contactless load of diameter-axial composite-rotor
Device and machine tool chief axis rigidity testing system.
Background technique
High speed, machining high-precision are the developing direction of machinery manufacturing industry, and the raising of Workpiece Machining Accuracy depends on
Research to machining Affecting Factors of Accuracy.Currently, the main reason for restricting machine cut machining accuracy is vibration, including master
Outer vibration source of forced vibration caused by the mass unbalance of axis, the regenerative chatter being relatively also easy to produce in cutting process and machine etc..It is right
In the important channel that the prediction of machine tool chief axis forced vibration is raising cutting precision, and the precision predicted often is limited to fail to examine
Consider the variations of the factors under motion state such as main axis stiffness, damping.Machine tool chief axis is in rotation due to the influence of centrifugal force, main shaft
It can weaken with the pressure of knife handle faying face, the contact stiffness of faying face weakens, so that the bending stiffness of spindle unit can be weakened, this
Outside, due to the weak link that bearing is spindle unit rigidity, bearings at both ends is in inside and outside centrifugal force and gyro power when main axis
Under the action of square, bearing rigidity can also change, to also will affect the bending stiffness of spindle unit.Main shaft is warm during rotation
Rising the influence to main shaft bending stiffness also can not be ignored.
As described above, machine tool spindles bend stiffness in the case where operating is variation, and influence bending stiffness
Principal element has: revolving speed, temperature etc..Due in machine cut process main shaft by radially, axially, tangentially three-dimensional cut
Power, the study found that axial dynamic cutting force suffered by main shaft can enhance the ct clamping of knife handle Yu main shaft faying face, it is right
Bending stiffness under machine tool chief axis working order generates large effect, how to test the machine tool chief axis of rotation by diameter-axial direction
When combined cut power, the variation of Machine Tool Spindle Bending Stiffness is a problem to be solved.
Summary of the invention
When the object of the invention is exactly how solution tests the machine tool chief axis of rotation by diameter-axial composite-rotor cutting force, lathe
This problem of the variation of main shaft bending stiffness.
Technical problem of the invention is resolved by technical solution below:
A kind of diameter-axial composite-rotor Non-contact loader, including cover board, pedestal, mounting plate, radial loaded part and axial direction
Loading section, the radial loaded part and axially loaded part are separately positioned on pedestal, and the cover board adds with the radial direction
It carries part to connect, the mounting plate connect with axially loaded part, the radial loaded part and axially loaded is partially installed on
On the pedestal.
Technical problem of the invention is also resolved by technical solution below:
A kind of machine tool chief axis rigidity testing system, including platen, diameter-axial composite-rotor Non-contact loader, survey
Coupon, displacement sensor component, three-dimensional dynamometer；The diameter-axial composite-rotor Non-contact loader is mounted on the lathe worker
Make on platform, the diameter-axial composite-rotor Non-contact loader inner cavity, institute's displacement sensors group is arranged in the prod
Part, the three-dimensional dynamometer are installed on the platen.
Preferably, the radial loaded part includes radial coil, radial core and base, and the radial coil is located at institute
It states in radial core, the radial core is mounted on the base.
Preferably, the radial coil includes four discrete parts, and the radial coil is mounted in the radial core；
The radial core is with the first fixing piece on the base；First fixing piece is flat key；
The radial core is by silicon steel sheet stack at mutual insulating between the silicon steel sheet.
Preferably, the axially loaded part includes axial coil, axial iron core and axially mounted plate, the axial direction coil
It is fixed in axial iron core, the axial direction iron core is mounted on the axially mounted plate.
Preferably, the axial iron core and the radial core are respectively disk-like accessory.
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 include displacement sensor, it is displacement sensor mounting plate, fine adjustment stage, micro-
Platform mounting plate is leveled, the fine adjustment stage is mounted on institute for accurately adjusting the position of displacement sensor, institute's displacement sensors
On displacement sensors mounting plate, institute's displacement sensors mounting plate is mounted in the fine adjustment stage, the fine adjustment stage peace
On the fine adjustment stage mounting plate, the fine adjustment stage mounting plate is mounted 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 close to the end of prod.
Preferably, described three-dimensional dynamometer one end is connected with diameter-axial composite-rotor load, and the other end is fixed on lathe work
It is connected on platform with the loader mounting plate, for measuring radial force suffered by prod and axial force.
Preferably, one end of the prod is connected with machine tool chief axis, and the other end is placed in diameter-axial composite-rotor loader
Inner cavity center position, it is non-contact with diameter-axial composite-rotor loader.
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 further includes signal acquisition and conditioning system, the signal acquisition
It is connected respectively with institute displacement sensors, three-dimensional dynamometer with conditioning system, the signal acquisition and conditioning system are received and be displaced
The signal of sensor and three-dimensional dynamometer, and collected data are transferred in computer and are handled.
The beneficial effect of the present invention compared with the prior art is:
A kind of diameter-axial composite-rotor Non-contact loader of the invention and machine tool chief axis rigidity testing system, provide one
Cover the experimental provision influenced for studying axial cutting force 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 force, available main shaft institute
Main shaft bending stiffness is influenced by dynamic axial power, tachometer value, provides experiment hand to improve the dynamic property of machine tool chief axis
Section and method.
Detailed description of the invention
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 sensor scheme of installation of machine tool chief axis rigidity testing system of the present invention；
Fig. 4 is diameter of the present invention-axial composite-rotor Non-contact loader structural decomposition diagram；
Fig. 5 is the axially loaded structural schematic diagram of machine tool chief axis rigidity testing system of the present invention；
Fig. 6 is the radial 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 processing 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 is as shown in Figure 1, 2, including platen 5, diameter-
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；
Diameter-axial composite-rotor loader 4 is mounted on the workbench 5 of vertical machine 1, one end of prod 3 and machine tool chief axis 2
It is connected, the other end is placed in diameter-axial composite-rotor loader 4 inner cavity center position, does not contact with diameter-axial composite-rotor loader 4.
Displacement sensor component is mounted on the workbench 5 of lathe 1 by sensor displacement 6, the probe of displacement sensor 6
Should be close to the cylindrical surface of test lead 3, and guarantee that displacement measurement direction is consistent with prod force in radial direction as far as possible.
7 one end of three-dimensional dynamometer component is connected with diameter-axial composite-rotor loader 4 loader mounting plate, and the other end is solid
It is scheduled on platen 5, for measuring radial force suffered by prod 3 and axial force.
Displacement sensor component is as shown in Figure 3, comprising: displacement sensor mounting plate 18, fine adjustment stage 19, fine adjustment stage peace
Loading board 20, fine adjustment stage 19 can do small movement in the x, y, z-directions, for accurately adjusting the position of displacement sensor 6,
Displacement sensor 6 is mounted on displacement sensor mounting plate 18, and displacement sensor mounting plate 18 is mounted in fine adjustment stage 19, micro-
Leveling platform 19 is mounted on fine adjustment stage mounting plate 20, and the fine adjustment stage mounting plate 20 is mounted on platen 5.Displacement
The probe of sensor 6 is in the end of prod 3, measurement process by adjusting fine adjustment stage 19 to obtain optimal measurement
Point.
Displacement sensor 6 is laser displacement sensor.
Diameter -4 structural schematic diagram of axial composite-rotor Non-contact loader is as shown in figure 4, including cover board 8, radial coil 9, putting down
Key 10, radial core 11, base 12, pedestal 13, axially mounted plate 14, axial coil 15, axial iron core 16, mounting plate 17, diameter
Radial loaded component is formed to coil 9, radial core 11, base 12.
Cover board 8, radial core 11, base 12, pedestal 13, axially mounted plate 14, axial coil 15, axial iron core 16, peace
Loading board 17 is all disk-like accessory, and cover board 8, pedestal 13, axially mounted plate 14, axial iron core 16, is all set on mounting plate 17 base 12
There is mounting hole, radial coil 9 is made of identical four part, four uniformly distributed bossy bodies are distributed with inside radial core 11, point
Not Yong Yu coiling radial coil 9, base 12 be disk-like accessory, inner hole aperture be equal to radial core 11 outer diameter, which is provided with
Mounting hole, one end and base is distributed in the both ends of the connecting hole connecting with cover board 8 and the connecting hole connecting with pedestal 13, pedestal 13
12 are connected, and the other end is connected with mounting plate 17, and axial iron core 16 is also wound in axial iron core 16 for disk-like accessory axial direction coil 15
On the cylindrical body in portion, axial iron core 16 is mounted 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, axially
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 mounted on axially mounted plate 14 by mounting hole, and axially mounted plate 14 is fixed on pedestal 13, and pedestal 13 is mounted on installation
On plate 17；Radial coil 9 moves into radial core 11 and then radial core 11 is inserted in base 12, and flat key 10 is for preventing radial direction
Relative rotation of the iron core 11 in base 12, cover board 8 are mounted on base 12, then base 12 is installed on pedestal 13.
Assemble sequence is first loader mounting plate 17 to be mounted on three-dimensional dynamometer 7, then axially mounted plate 14 is installed
On pedestal 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 mounted on axially mounted plate 14 according to direction as shown in the figure, then pedestal 13 is mounted on loader mounting plate 17；
The above-mentioned installation for completing axially loaded part, here are the installations of radial loaded part: radial coil 9 is moved into radial core
Then 11 are inserted in radial core 11 in base 12, flat key 10 to prevent relative rotation of the radial core 11 in base 12,
Base 12 is installed on pedestal 13 again, finally cover board 8 is mounted on base 12.
Radial coil 9 moves into radial core 11, to apply radial force；15 sets of axial coil on axial iron core 16, are 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 that radial loaded structural schematic diagram is kept between the two as shown, prod 3 protrudes into radial core 11
Uniform gap.It is excessive to will lead to electromagnetism loading force too since gap width is a key factor for influencing electromagnetism loading force size
It is small, it is too small to will lead to centering difficulty.
In order to guarantee load effectively, the loading surface of radial core 9 and the spacing of prod 3 should be in 0.8mm-1.2mm, to protect
The uniform of gap is demonstrate,proved, the iron core surface opposite with prod 3 should be machined with certain radian.When being powered to radial coil 9, diameter
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
Generate the magnetic force F an of radial directionr, the radial cutting force suffered in actual cut of simulated machine tool main shaft 2.
Axial coil 15 is wound on axial iron core 16, the shaft end interplanar of the loading surface and prod 3 of axial iron core 16
Distance will also be controlled in 0.5mm-2.5mm.When being powered to axial coil 15, axial iron core 16, gap, shape between prod 3
At the magnetic line of force 21 of a branch of closure, the magnetic force F of an axial direction is generated between axial iron core 16 and prod 3a, the direction of magnetic force is such as
Shown in Fig. 8, the axial cutting force suffered in actual cut of simulated machine tool main shaft 2.
It is generated since eddy current effect can be generated in changing magnetic field, 11 stress surface of radial core will form current vortex, electricity
Vortex, which is formed by magnetic field, can not only weaken former magnetic field, and its fuel factor will limit the revolving 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 various
Reason, the force-bearing surfaces application silicon steel sheet stack of radial core 11 is at mutual insulating between steel disc.
In order to make that magnetic force can be generated between prod 3 and radial direction and axial composite-rotor load and measuring device 4, prod is needed
It selects ferromagnetic material (iron, cobalt, nickel or its alloy).
Plug, i.e. prod 3 can be examined according to different main shaft type selection criteria, common type has: BT, HSK, SK
Deng this selection BT prod.It is required that prod circularity with higher and concentricity.
The signal processing schematic diagram of main axis stiffness test macro as shown in figure 9, data Collection & Processing System 23 respectively with
Laser displacement sensor 6, three axis force dynamometer 7 are connected, and acquire force signal and displacement signal and are input in computer 24 and carry out
Data processing is to measure the influence of axial force, the speed of mainshaft to main shaft bending deformation.
The signal of laser displacement sensor and three-dimensional force measuring instrument is connected to data acquisition and procession system by data line
System 23, is acquired signal and handles, will be collected by being drivingly connected the software section and hardware components of test macro
Data are transferred in computer 24 and handle.
The test flow chart of machine tool chief axis rigidity testing system is as shown in Figure 10, comprising the following steps:
S1, it is powered to diameter-axial composite-rotor Non-contact loader；
After S2, energization in radial coil, radial core, estimate and form a closed magnetic circuit between stick, generate radial electromagnetic force,
In axial coil, axial iron core, estimate and form another closed magnetic circuit between stick, generates axial electromagnetic force；S3, S4 two is carried out simultaneously
Step；
S3, three-dimensional dynamometer detect lathe main shaft diameter-axial direction force value；
Machine tool chief axis under S4, rotary state generates deformation, and displacement sensor detects the radial displacement value of machine tool chief axis；
Diameter-axial direction force value, the radial displacement value that S5, basis detect, are calculated according to Rigidity Calculation formula, are obtained
Main shaft bending stiffness.
Diameter according to an embodiment of the present invention-axial composite-rotor Non-contact loader and machine tool chief axis rigidity is detailed below
The appraisal procedure that axial force influences bending deformation in test macro.
Wherein, it should be noted that appraisal procedure is the committed step of machine tool capability assessment, assessment mode and experimentation
Used concrete scheme is closely related.
Firstly, prod 3 is impossible to be an ideal cylinder in actual use, always there are one for own
Fixed rough surface, and always there is certain turn error in practical turning course, and these problems can all be made
At the measurement error in test process.The precision of general laser displacement sensor is relatively high, and (general resolution ratio is several micro-
Rice), it is sufficient to wherein rough feature is measured, but needs to carry out corresponding calculate to eliminate manufacturing and fixing error.In addition,
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) different rotating speeds in the case of, machine tool chief axis only plus in the case of radial force
The measurement of bending deformation；2) in the case of different rotating speeds, while applying the survey of radial force with machine tool chief axis bending deformation when axial force
Amount.
1) in the case of different rotating speeds, the measurement of machine tool chief axis bending deformation only plus in the case of radial force
The revolving speed of machine tool chief axis is gradually adjusted to n by 0r/min1It is logical to coil (radial direction) after r/min, the 30min that dallies
Electricity changes the size of coil (radial direction) current value, in order to obtain multi-group data to apply the diameter of different amplitudes and frequency to main shaft
Xiang Li obtains multiple groups radial force and radial displacement value { F by signal acquisition and conditioning systemw1k},{δw1k, k=1,2,
3m, sample frequency are greater than 2 times of signal frequency, generally take 5-10 times, also same below；To { Fw1k},{δw1kSequence
Column 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)/δw1kIt (w) is frequency
Rigidity value under rate domain, it may be assumed that Kw1k(w)=Fw1k(w)/δw1k(w), k=1,2,3...m change tachometer value, when revolving 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 common cutting speed section.5 tachometric survey points of this experimental selection,
It can obtain:
{Fwλk(w)},{δwλk(w) }, λ=1,2,3,4,5, k=1,2,3m corresponding rigidity values are as follows:
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, at the same apply radial force and when axial force machine tool chief axis bending deformation measurement similarly,
The revolving speed of machine tool chief axis is gradually adjusted to n by 0r/min1To coil (radial direction) and coil (axial direction) after r/min, the 30min that dallies
It is powered simultaneously, in order to study influence of the axial force to bending deformation, and in view of radial force and axial direction in tool cutting process
The variation of power is consistent, so obtaining axial force when passing to certain current value to coil (axial direction) is M1Change coil
To obtain the radial forces of different amplitudes and frequency, the frequency of radial force and the frequency of axial force are consistent the electric current of (radial direction),
If cambered axle at this time is to recombination coefficientMeasurement can obtain: (M1,Ff11k,δ11k), k=1,2,
3m, to { Ff11k}{δ11k, i=1,2,3m progress DTFT transformation can obtain { Ff11k(w)}{δ11k(w) }, k=1,
2,3m, the rigidity calculated under frequency domain can obtain:
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) there is comparability, 2) frequency of radial force that is applied and amplitude and turn
The selection of fast measurement point with it is 1) identical；Similarly, when revolving speed is n2, apply same axial force in the case of, can obtain: Kf2jk(w)=
Ff2jk(w)/δ2jk(w), j=1,2,3,4,5, k=1,2,3...m successively measure 5 groups of data and can obtain: Kfλjk(w)=Ffλjk(w)/
δλjk(w), λ=1,2,3,4,5, j=1,2,3,4,5, k=1,2,3...m
With KwλkIt (w) is comparative run, with Kfλjk(w) compare, is analyzed under same rotating speed (i.e. same λ), axial when changing
Force value (changesjValue) when, the size relation of two values, it can be found that Kwλk(w)≤Kfλjk(w) you can get it, and axial force enhances
Bending stiffness reduces bending deformation, while the variation that can research and analyse axial force and velocity variations are to this enhancing
The influence of effect.
To sum up, the diameter of the embodiment of the present invention-axial composite-rotor Non-contact loader and machine tool chief axis rigidity test system
System provides a set of experimental provision for influencing on main shaft bending deformation of solution machine tool chief axis axial force, can measure the speed of mainshaft,
Apply influence of the axial force to main shaft bending deformation, is conducive to the improvement of machine dynamic performance.
The above content is combine it is specific/further detailed description of the invention for preferred embodiment, cannot
Assert that specific implementation of the invention is only limited to these instructions.General technical staff of the technical field of the invention is come
It says, without departing from the inventive concept of the premise, some replacements or modifications can also be made to the embodiment that these have been described,
And these substitutions or variant all shall be regarded as belonging to protection scope of the present invention.
Claims (10)
1. a kind of diameter-axial composite-rotor Non-contact loader, it is characterised in that: including cover board, pedestal, mounting plate, radial loaded
Part and axially loaded part, the radial loaded part and axially loaded part be separately positioned on pedestal, the cover board with
The radial loaded part connection, the mounting plate are connect with axially loaded part, and the radial loaded part includes radial line
Circle, radial core and base, the radial coil are located in the radial core, and the radial core is inserted in the base；
The axially loaded part includes axial coil, axial iron core and axially mounted plate, and the axial direction coil is fixed on axial direction
In iron core, the axial direction iron core is mounted on the axially mounted plate by mounting hole, and axially mounted plate is fixed on the base, bottom
Seat installation is on a mounting board；
Mounting hole is distributed in the both ends of the pedestal, and one end is connected with the base, and the other end is connected with the mounting plate.
2. Non-contact loader according to claim 1, it is characterised in that: the cover board, radial core, base, bottom
Seat, axially mounted plate, axial coil, axial iron core, mounting plate are all disk-like accessories.
3. Non-contact loader according to claim 1, it is characterised in that: the radial coil includes discrete four
Point, the radial coil is mounted in the radial core；
The radial core is with the first fixing piece on the base；First fixing piece is flat key；
The radial core is by silicon steel sheet stack at mutual insulating between the silicon steel sheet；
The loading surface of the axial direction iron core is plane, and the loading surface of the radial core is the inner arc surface with certain curvature.
4. a kind of machine tool chief axis rigidity testing system of any one of the application claim 1-3 Non-contact loader,
It is characterized in that: including platen, diameter-axial composite-rotor Non-contact loader, prod, displacement sensor component, three-dimensional
Dynamometer；The diameter-axial composite-rotor Non-contact loader is mounted on the platen, and the prod is arranged in institute
Diameter-axial composite-rotor Non-contact loader inner cavity is stated, the displacement sensor component, the three-dimensional dynamometer are installed in institute
It states on platen.
5. test macro according to claim 4, it is characterised in that: the displacement sensor component includes displacement sensing
Device, displacement sensor mounting plate, fine adjustment stage, fine adjustment stage mounting plate, the fine adjustment stage is for accurately adjusting displacement sensing
The position of device, institute's displacement sensors are mounted on institute's displacement sensors mounting plate, the installation of institute's displacement sensors mounting plate
In the fine adjustment stage, the fine adjustment stage is mounted on the fine adjustment stage mounting plate, the fine adjustment stage mounting plate peace
On platen.
6. test macro 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 sensor 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 macro according to claim 4, it is characterised in that: described three-dimensional dynamometer one end and diameter-axial composite-rotor
Load is connected, and the other end is fixed on platen to be connected with the loader mounting plate, for measuring suffered by prod
Radial force and axial force.
8. test macro 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 diameter-axial composite-rotor loader inner cavity center position, non-contact with diameter-axial composite-rotor loader.
9. test macro according to claim 8, it is characterised in that: the loading surface of the radial core and the test
Stick, the axial iron core loading surface and the prod between all have uniform gap, the gap is 0.5mm-2.5mm.
10. test macro according to claim 4, it is characterised in that: the machine tool chief axis rigidity testing system further 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 and conditioning system receive the signal of displacement sensor and three-dimensional dynamometer, and collected data are transferred to
It is handled in computer.
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| 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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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107764537B (en) * | 2017-11-08 | 2019-08-27 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of non-contact axial force loading device and method of feeling relieved |
| CN108692896B (en) * | 2018-05-07 | 2019-05-07 | 北京科技大学 | A kind of non-contact air film loading device suitable for high-speed main spindle rigidity test |
| CN109632218B (en) * | 2018-12-17 | 2020-11-20 | 清华大学深圳研究生院 | Main shaft radial force non-contact loader and loading system under machine tool running state |
| CN110967129B (en) * | 2019-12-05 | 2021-11-12 | 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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