CN206515029U - A kind of axial dynamic stiffness tester of machine tool chief axis - Google Patents
A kind of axial dynamic stiffness tester of machine tool chief axis Download PDFInfo
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- CN206515029U CN206515029U CN201720113785.2U CN201720113785U CN206515029U CN 206515029 U CN206515029 U CN 206515029U CN 201720113785 U CN201720113785 U CN 201720113785U CN 206515029 U CN206515029 U CN 206515029U
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- force snesor
- main shaft
- dynamic stiffness
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Abstract
The utility model is related to a kind of axial dynamic stiffness tester of machine tool chief axis, it is characterised in that the tester includes force snesor sleeve, shaft position sensor, fore-lying device, charge amplifier, data collecting card, data processing end, force snesor and magnet base；The force snesor sleeve set is on main shaft, and positioned between main shaft upper forepart and two bearings at middle part, force snesor sleeve is annular shape, on annulus medial surface, it has been distributed uniformly and circumferentially four foil gauges, the force-bearing types of two neighboring foil gauge are on the contrary, i.e. one foil gauge is horizontally disposed, and adjacent foil gauge is arranged vertically；Four foil gauges are attached according to full-bridge circuit mode, constitute a force snesor, the output end of full-bridge circuit is drawn from force snesor cartridges sides, and is connected by signal wire with placing the input of charge amplifier on the table, and the output end of charge amplifier is connected with data collecting card.
Description
Technical field
The utility model belongs to mechanical oscillation and testing field, more particularly to a kind of axial dynamic stiffness tester of machine tool chief axis
And method of testing.The tester and method are used for the survey of the axial dynamic rate of main shaft of the Digit Control Machine Tool under actual cut state
Examination.
Background technology
The ability of the dynamic external applied load of dynamic property reflection lathe resistance of lathe, with load-bearing capacity and the close phase of vibration resistance
Close, directly affect the machining accuracy of lathe and the crudy of part, wherein dynamic stiffness is the important of measurement machine dynamic performance
Index.The dynamic stiffness of lathe refers to the rigidity that lathe is shown under the sinusoidal alternating load effect changed with certain frequency,
The ability that lathe bears resistance dynamic displacement change during alternation dynamic loading is characterized, lathe is numerically equal to and produces unit amplitude institute
The dynamic excitation power needed, is the leading indicator for weighing vibration resistance, and Dynamic Stiffness of Machine Tools is bigger, and amplitude is got under Dynamic Loading
Small, lathe vibration resistance is better, and machining accuracy is higher.Conversely, dynamic stiffness is smaller, amplitude is bigger, and machining accuracy is lower.
Research at present to main shaft dynamic stiffness is main based on modeling and simulating, finite element analysis, and method of testing also focuses mostly on
Turn in conventional hammering method, vibrator exciting, torque in no-load running test and test experiment method of testing, no-load running testing engineering
Fast instrument method and the utilization kind of drive load test after slowing down, and such method is contact exciting and loading, unstable, Er Qiechang
Complicated assistive device is often needed, cost is high, and wear and tear in machines is serious；Test experiment method of testing typically uses hydraulic system or electromagnetism
System carries out static loading to main shaft, and the force-bearing situation of analog main shaft is disadvantageous in that loading device complexity, space-consuming
Greatly, generally require and build Special test platform, main shaft is disassembled into progress test experiment detection, and be only applicable to special main shaft,
Without versatility, also there is a big difference for this true stressing conditions with tested main shaft under actual cut state.
The Chinese patent of Application No. 201310215687.6 discloses a kind of contactless machine tool chief axis operating dynamic stiffness
Detecting system, the system includes electromagnetic loading device, prod, force snesor and displacement detector；Wherein, loading device is set
Put on platen, prod one end is connected with main shaft, the other end closes on the electromagnet in loading device, electromagnetism loading
Device is powered by electromagnet to be produced electromagnetic force and prod is loaded to drive prod to deflect, and force snesor and displacement are passed
Sensor is respectively intended to detect the loading effect power and yaw displacement that prod is subject to, so as to obtain the dynamic firm of machine tool chief axis operating
Degree.The test system by electromagnetic loading device can only force in prod in main shaft free-runing operation, and main shaft is obtained indirectly and is moved
Rigidity, it is impossible to be used in actual cut state lower main axis dynamic stiffness is tested, and loading device is complicated, space-consuming is big.
Application number 201310102571.1 discloses a kind of Digit Control Machine Tool complete machine stiffness test system, and the system includes swashing
Subsystem, power acquisition subsystem, displacement acquisition subsystem, data acquisition front and data processor are encouraged, wherein, encourage subsystem
Output end, the input of power acquisition subsystem, the input of displacement acquisition subsystem be connected with lathe detected part respectively；Power
Acquisition subsystem, the output end of displacement acquisition subsystem are connected by data acquisition front with data processor.The test system
System can provide stable sinusoidal excitation signal by signal generator, drive vibrator to produce dynamic excitation after power amplifier
Power, and dynamic displacement data of the machine tool chief axis with respect to workbench are measured by laser displacement sensor, calculating obtains complete machine tool and moved
Rigidity, though the test system, which can be tested, obtains dynamic displacement of the machine tool chief axis under dynamic excitation power with respect to workbench, due to machine
Fluctuation occurs in cutting force in bed process, and larger error easily occurs in test result.
Accordingly, it would be desirable to invent a kind of novel built-in type main shaft device for testing dynamic stiffness, detection is main under actual cut state
The stress and deformation situation of axle, are main shaft Intellisense, intelligence inspection to meet the main shaft dynamic stiffness test request under actual condition
Survey, adjustment control parameter provides foundation.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art to test there is provided a kind of axial dynamic stiffness of machine tool chief axis
Instrument and method of testing.The tester measures lathe in actual cut in real time by the force snesor and displacement transducer that are built in main shaft
Axially loaded and deformation under state, the axial dynamic stiffness for obtaining main shaft is calculated through data processing section, machine tool chief axis is solved
Dynamic characteristic be difficult under actual cut state test the problem of, and for future main shaft Intellisense, Intelligent Measurement, intelligence adjust
Whole control parameter, parameter optimization provide foundation.The method of testing is simple and reliable, be easy to operation, it is not necessary to special driving, pass
The operation of the units such as dynamic, control, it is easy to which left-hand seat, the dynamic characteristic for solving machine tool chief axis is difficult to test under actual cut state
The problem of, realize test of the lathe in actual cut state lower main axis dynamic stiffness.
The utility model is achieved through the following technical solutions：
The axial dynamic stiffness tester of a kind of machine tool chief axis, it is characterised in that the tester includes force snesor sleeve, axial direction
Displacement transducer, fore-lying device, charge amplifier, data collecting card, data processing end, force snesor and magnet base；The power is passed
Sensor sleeve set is on main shaft, and positioned between main shaft upper forepart and two bearings at middle part, and force snesor sleeve is annulus
Shape, on annulus medial surface, has been distributed uniformly and circumferentially four foil gauges, the force-bearing types phase of two neighboring foil gauge
Instead, i.e., one foil gauge is horizontally disposed, and adjacent foil gauge is arranged vertically；Four foil gauges are connected according to full-bridge circuit mode
Connect, constitute a force snesor, the output end of full-bridge circuit is drawn from force snesor cartridges sides, and by signal wire with placing
The input connection of charge amplifier on the table, the output end of charge amplifier is connected with data collecting card；The axle
Front-end of spindle face is installed on by support to displacement transducer, support fixes absorption on thrust flange disk by magnet base, axially
Front end face of the probe of displacement transducer towards main shaft；The output end of shaft position sensor is by signal wire and is placed on work
The input of fore-lying device on platform is connected, and the output end of fore-lying device is also connected with data collecting card, the output end of data collecting card
It is connected with data processing end；Dynamic stiffness test software is loaded with the data processing end.
A kind of axial dynamic stiffness method of testing of machine tool chief axis, the method for testing uses above-mentioned tester, comprised the concrete steps that：
1) according to above-mentioned connected mode connecting test instrument each several part, four foil gauges are arranged in force snesor sleeve, axle
To displacement transducer probe towards main shaft front end face, adjust shaft position sensor probe it is relative with front-end of spindle face
Position, makes the bright and clean calibration tape of front end face of the alignment probe main shaft of shaft position sensor, and ensures that shaft position sensor exists
In the range of useful range；Start all parts in tester, be at normal operating conditions；
2) Digit Control Machine Tool is run, workpiece is processed by the technological process of workpiece to be added；
3) in Computerized Numerical Control Cutting Processes, user is arranged as required to sample frequency, sampling number, number of buffer
Amount, acquisition channel, maximum voltage value and minimum voltage value, set after above-mentioned parameter, start collection button；Axial displacement is sensed
Device gathers axial displacement signal, and is transmitted by fore-lying device into data collecting card, obtains the dynamic displacement signal x of main shaft axial direction
(t)；Force snesor gathers pressure signal, and transmits into data collecting card after being amplified by charge amplifier, obtains spindle shaft
To dynamic stress signal f (t), and force signal, displacement signal are shown in the waveform display interface in dynamic stiffness test software
In；
4) in data processing end dynamic stiffness test software by the force signal f (t) collected and displacement signal x (t) according to
Formula (1) and formula (2) carry out Fourier transformation, obtain frequency-region signal, and in interface display；
In formula：X (ω) is dynamic displacement signal x (t) Fourier transformation, and F (ω) is dynamic stress signal f (t) Fu
In leaf transformation, according toCalculate the dynamic stiffness for obtaining main shaft of numerical control machine tool axial direction.
Compared with prior art, the beneficial effects of the utility model are：
The force snesor of the utility model machine tool chief axis axial direction dynamic stiffness tester uses built-in manner, i.e., by four strains
Piece is arranged in force snesor sleeve, and four foil gauges constitute force snesor, and the force snesor sleeve can be enclosed on main shaft i.e.
It is built in main shaft cabinet, the influence to machine tooling process such as tester, wire can be prevented effectively from, plays axially position and make
With can realize and the measurement to main shaft dynamic stiffness is completed under actual cut work status；It is sharp under lathe actual cut state
Firmly sensor test goes out the axial stress suffered by main shaft, while testing out axial stress correspondence using shaft position sensor
Axial displacement size, and then analyzed by dynamic stiffness test software and show that main shaft of the lathe under actual cut state is axially dynamic
Rigidity.
The utility model method of testing is the axial direction directly tested in working angles in lathe actual cut workpiece fabrication
Pressure signal and axial displacement signal, and the dynamic stiffness of machine tool chief axis is drawn after signal processing analysis, it can truly reflect master
(dynamic property is primarily referred to as the ability that it resists vibration to dynamic characteristic of the axle during actual processing, including vibration resistance and steady
Qualitative two aspect, dynamic stiffness can reflect that vibration resistance can reflect that cutting is stable or unstable in process indirectly again
State or cutting be from the development for being stabilized to unstable state), can test or judge indirectly the vibration resistance of main shaft, so
The lathe that the dynamic stiffenss ratio measured by the utility model tester and method is measured under exciting or static loading state is dynamic firm
Degree more can scientifically reflect the dynamic characteristic of main shaft.
The utility model does not need any loading device, and machine tool structure will not be damaged, interior in the tester in addition
The force snesor of different inside/outside diameter sizes can be set according to main shaft diameter of axle size and fit precision requirement by putting force snesor
Sleeve, is configured between main shaft upper forepart and two bearings at middle part, can replace the axle sleeve in existing axis system, structure letter
Single, easy to operate, it is easy to control, wide using scope, measuring accuracy is high, can more meet actual test requirement.The tester structure
Simply, it is easy to use, occupy little space, can truly reflect main shaft in actual cut state lower stress and deformation situation.
Brief description of the drawings
Fig. 1 is the attachment structure schematic diagram of the axial dynamic stiffness tester of the utility model machine tool chief axis；
Fig. 2 is that the front view structure of force snesor sleeve 1 in the axial dynamic stiffness tester of the utility model machine tool chief axis is shown
It is intended to；
Fig. 3 is along A-A to cross section structure diagram in Fig. 2；
Fig. 4 is force snesor installation position in force snesor sleeve in the axial dynamic stiffness tester of the utility model machine tool chief axis
Put schematic diagram；
Fig. 5 is the full-bridge type connection circuit signal of force snesor in the axial dynamic stiffness tester of the utility model machine tool chief axis
Figure；
Fig. 6 is shaft position sensor scheme of installation in the axial dynamic stiffness tester of the utility model machine tool chief axis；
Fig. 7 is a kind of dynamic stiffness test software of embodiment of the axial dynamic stiffness tester of the utility model machine tool chief axis
Software flow pattern；
In figure：1st, force snesor sleeve, 2, bearing, 3, thrust flange disk, 4, main shaft, 5, shaft position sensor, 6, preceding
Put device, 7, charge amplifier, 8, data collecting card, 9, data processing end, 10, foil gauge, 11, magnet base.
Embodiment
The utility model is further described with reference to embodiment and accompanying drawing, but is not wanted in this, as to the application right
Ask the restriction of protection domain.
The utility model machine tool chief axis axial direction dynamic stiffness tester (abbreviation tester, referring to Fig. 1-6) includes force snesor
Sleeve 1, shaft position sensor 5, fore-lying device 6, charge amplifier 7, data collecting card 8, data processing end 9, force snesor 10
With magnet base 11；The force snesor sleeve 1 is sleeved on main shaft 4, and positioned at main shaft upper forepart and middle part two bearings 2 it
Between, force snesor sleeve 1 is annular shape, on annulus medial surface, has been distributed uniformly and circumferentially four foil gauges 10, adjacent
The force-bearing types of two foil gauges are on the contrary, i.e. one foil gauge is horizontally disposed, and adjacent foil gauge is arranged vertically；Four foil gauges
It is attached according to full-bridge circuit mode, constitutes a force snesor, the output end of full-bridge circuit is from the side of force snesor sleeve 1
Draw, and be connected by signal wire with placing the input of charge amplifier 7 on the table, the output of charge amplifier 7
End is connected with data collecting card 8；The shaft position sensor 5 is installed on front-end of spindle face by support, and support is by magnet base
11 fix absorption on thrust flange disk 3, the front end face of the probe of shaft position sensor 5 towards main shaft；Axial displacement is sensed
The output end of device 5 is connected by signal wire with placing the input of fore-lying device 6 on the table, the output end of fore-lying device 6
It is connected with data collecting card 8, the output end of data collecting card 8 is connected with data processing end 9；Loaded in the data processing end 9
There is dynamic stiffness test software.
On the one hand force snesor sleeve replaces the axle sleeve in axis system, plays axially position, on the other hand as inspection
Device is surveyed, for detection lathe in real time in actual cut state lower main axis axial force.
The data processing end 9 is desktop computer, notebook computer or ipad, smart mobile phone etc..
It is of the present utility model be further characterized by the shaft position sensor 5 use 85811 serial probe diameters for
25 current vortex sensor, range is 10mm, and sensitivity is 0.8mv/ μm, and resolution ratio is 10 μm, and working frequency is 0-4000Hz,
The linearity is 1.5%FS.
The dynamic stiffness test software of loading can use existing dynamic stiffness to survey in data processing end 9 in the utility model
Software is tried, part of data acquisition, data can also be included according to dynamic stiffness test software described herein, the software interface
Playback section, data processing section, wherein part of data acquisition receive the force snesor exported in data collecting card 8 and displacement
The pressure signal and displacement signal of sensor, and the data of collection are preserved；Wherein part of data acquisition includes collection ginseng
Number sets interface, control collection button, waveform display interface and data storage interface, and acquisition parameter is set can be to adopting in interface
Sample frequency, sampling number, number, acquisition channel, maximum voltage value, minimum voltage value are selected；User sets
Collection button can just be started after above-mentioned parameter, and the force sensor signals of collection, displacement transducer signal are shown in waveform
In display interface；Can just data be saved as the data file in data processing end 9 by clicking on save button, and the form of support is text
This document * .txt and Excel file * .xls；Data readback part is used for reading the data file stored, by data with waveform
Form or array form are shown to user and checked, carry out later stage offline statistical analysis；Selection needs the text of data storage called
Part, clicks on playback button, it is possible to the waveform of data file is seen in waveform display interface, while with two in array is shown
Dimension table case form display data, for the offline statistical analysis of user's later stage；In data processing section by the force signal collected and
Displacement signal makees fft analysis (fast Fourier transform), respectively obtains power-frequency and displacement-frequency diagram (continuous time-domain signal warp
Discrete frequency amplitude figure is obtained after Fourier transformation), and in interface display, calculating obtains spindle shaft to dynamic stiffness.
The software flow (referring to Fig. 7) of dynamic stiffness test software described in the utility model is：
1) start, check whether Digit Control Machine Tool equipment is normalIf normally, opening lathe；If abnormal, diagnosed and located
Whether normal reason, continue checking for Digit Control Machine Tool equipment；
2) log-on data processing end, force snesor, shaft position sensor, fore-lying device, charge amplifier, data acquisition
Card, and test data processing end, force snesor, shaft position sensor, fore-lying device, charge amplifier and data collecting card whether
In normal operating conditionsIf, normal work, into step 3), if irregular working, it is adjusted, corrects, continues to sentence
Breaking, whether it is in normal operating conditions；
3) setting machine cut parameter, input machine cutting program code, set power to sense respectively in data processing end
Device, the sampling configuration of shaft position sensor, acquisition channel, sample frequency, number etc., then judge whether that triggering is adopted
Collection, enters step 4 if triggering collection), if not triggering, return and force snesor, the sampling mould of shaft position sensor are set
Formula, acquisition channel, sample frequency, number etc.；
4) machining is carried out, and shows in dynamic stiffness test software interface displacement signal, the force signal of collection, and is painted
Axial displacement-time graph and force-time curve processed；
5) judge whether save button is pressedIf save button has been pressed, the data of collection are saved as into * .txt
Or * .xls file formats, for follow-up processed offline；Judge whether to press playback button againIf pressing, call what is stored
Data file, into step 6), if not pressing, continue to determine whether to press playback button；If save button is not pressed,
Then enter step 6)；
6) axial displacement signal of collection, force signal are subjected to Fourier transformation respectively, obtain displacement-frequency diagram and power-
Frequency diagram, and shown in dynamic stiffness test software；
7) calculate and obtain spindle shaft to dynamic stiffness；
8) judge whether that change cutting parameter and acquisition parameter continue to test againIf, change cutting parameter and acquisition parameter
Continue to test, then rotate back into step 3)；If cutting parameter and acquisition parameter need not be changed, test device (tester) is closed
And Digit Control Machine Tool, terminate test.
The utility model machine tool chief axis axial direction dynamic stiffness method of testing (abbreviation method), the method for testing uses above-mentioned survey
Instrument is tried, is comprised the concrete steps that：
1) according to above-mentioned connected mode connecting test instrument each several part, four foil gauges are arranged in force snesor sleeve, axle
To the probe of displacement transducer 5 towards the front end face of main shaft 4, the probe and the front end face of main shaft 4 of shaft position sensor 5 are adjusted
Relative position, makes the bright and clean calibration tape of front end face of the alignment probe main shaft 4 of shaft position sensor 5, and ensures that axial displacement is passed
Sensor 5 is in the range of useful range；Start all parts in tester, be at normal operating conditions；
2) operation Digit Control Machine Tool (or lathe), workpiece is processed by the normal process flow of workpiece to be added；
3) in Computerized Numerical Control Cutting Processes, user is arranged as required to sample frequency, sampling number, number of buffer
Amount, acquisition channel, maximum voltage value, minimum voltage value etc., collection button can just be started by setting after above-mentioned parameter, axial position
Displacement sensor 5 gathers displacement signal, and is transmitted by fore-lying device 6 into data collecting card 8, obtains the dynamic displacement of main shaft axial direction
Signal x (t)；Force snesor gathers pressure signal, and by being transmitted after the amplification of charge amplifier 7 into data collecting card 8, obtains
The dynamic stress signal f (t) of main shaft axial direction, and the waveform that force signal, displacement signal are shown in dynamic stiffness test software shows
Show in interface；
4) in data processing end 9 dynamic stiffness test software by the force signal f (t) collected and displacement signal x (t) according to
Formula (1) and formula (2) carry out Fourier transformation, obtain frequency-region signal, and in interface display；
In formula：X (ω) is dynamic displacement signal x (t) Fourier transformation, and F (ω) is dynamic stress signal f (t) Fu
In leaf transformation, according toCalculate the dynamic stiffness for obtaining main shaft of numerical control machine tool axial direction, the machine that K (ω) obtains for calculating
The dynamic stiffness of bed main shaft axial direction, the dynamic stiffness that this method is obtained is a function with the frequency change of cutting pumping signal,
The situation that main shaft dynamic stiffness changes with frequency can be expressed, the ability that lathe resists alternate load can be reflected.
Built-in force snesor can require to set not according to main shaft diameter of axle size and fit precision in the utility model
With the force snesor sleeve of inside/outside diameter size, four foil gauges selection full-bridge circuit mode in internal structure is attached, essence
Degree is high, and the linearity is good, can effectively suppress drift.Four foil gauges are divided into two groups, and two horizontally disposed foil gauges are one group,
Two foil gauges for arranging vertically are one group, four foil gauges using four identical foil gauges, four foil gauges according to
Full-bridge circuit mode is attached.One group of horizontally disposed foil gauge of guarantee and arrange vertically one are needed using full bridge circuit
Group foil gauge force-bearing types on the contrary, i.e. stress later group foil gauge is stretched and another group of foil gauge is compressed, four foil gauges
Placement mode in force snesor sleeve 1 is ensured that in force snesor sleeve by axle as shown in Figure 3 and Figure 4, so
To after stress, during one group of foil gauge tension, another group is squeezed, and both occur opposite polarity equivalent change.
The operation principle of the utility model tester is：In lathe actual cut workpiece fabrication, cutting can be directly tested
During axial force signal and displacement signal, and draw after signal processing analysis the dynamic stiffness of machine tool chief axis.Enter in lathe
During row machining, workpiece is processed according to the technological process normally cut, main shaft can be acted on by axial stress, and will axially
Stress passes to the foil gauge in force snesor sleeve, and axial displacement deformation occurs in the presence of axial stress for main shaft, the position
Shifting signal by the shaft position sensor pickup installed in front-end of spindle face, the force signal that is then obtained by force snesor and by
The displacement signal that shaft position sensor is obtained is transferred in charge amplifier and fore-lying device by signal wire respectively, is passed again afterwards
The defeated axial dynamic stiffness information for drawing machine tool chief axis after being analyzed finally by dynamic stiffness test software into data collecting card, should
Information is main shaft real stress and deformation situation under actual cut state, and the information is more accurately and reliably.
The utility model does not address part and is applied to prior art, and involved component can be by commercially available.
Claims (3)
1. the axial dynamic stiffness tester of a kind of machine tool chief axis, it is characterised in that the tester includes force snesor sleeve, axial position
Displacement sensor, fore-lying device, charge amplifier, data collecting card, data processing end, force snesor and magnet base；The power sensing
Device sleeve set is on main shaft, and positioned between main shaft upper forepart and two bearings at middle part, and force snesor sleeve is annular shape,
On annulus medial surface, four foil gauges are distributed uniformly and circumferentially, the force-bearing types of two neighboring foil gauge are on the contrary, i.e.
One foil gauge is horizontally disposed, and adjacent foil gauge is arranged vertically；Four foil gauges are attached according to full-bridge circuit mode, structure
Into a force snesor, the output end of full-bridge circuit is drawn from force snesor cartridges sides, and by signal wire and is placed on work
Make the input connection of the charge amplifier on platform, the output end of charge amplifier is connected with data collecting card；The axial position
Displacement sensor is installed on front-end of spindle face by support, and support fixes absorption on thrust flange disk by magnet base, axial displacement
Front end face of the probe of sensor towards main shaft；The output end of shaft position sensor is by signal wire with placing on the table
Fore-lying device input be connected, the output end of fore-lying device is also connected with data collecting card, the output end and number of data collecting card
Connected according to processing end.
2. the axial dynamic stiffness tester of machine tool chief axis according to claim 1, it is characterised in that the data processing end is
Desktop computer, notebook computer, ipad or smart mobile phone.
3. the axial dynamic stiffness tester of machine tool chief axis according to claim 1, it is characterised in that the axial displacement sensing
Device use 85811 serial probe diameters for 25 current vortex sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720113785.2U CN206515029U (en) | 2017-02-07 | 2017-02-07 | A kind of axial dynamic stiffness tester of machine tool chief axis |
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| CN201720113785.2U CN206515029U (en) | 2017-02-07 | 2017-02-07 | A kind of axial dynamic stiffness tester of machine tool chief axis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362452A (en) * | 2018-02-04 | 2018-08-03 | 西北工业大学 | A kind of measurement method for the axial static dynamic stiffness measurement can be used for planetary roller screw |
| 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 |
| CN110375938A (en) * | 2019-07-05 | 2019-10-25 | 上海理工大学 | Headstock for cylindrical grinding machine dynamic stiffness measurement device and method |
-
2017
- 2017-02-07 CN CN201720113785.2U patent/CN206515029U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362452A (en) * | 2018-02-04 | 2018-08-03 | 西北工业大学 | A kind of measurement method for the axial static dynamic stiffness measurement can be used for planetary roller screw |
| CN108362452B (en) * | 2018-02-04 | 2020-04-24 | 西北工业大学 | Measuring method for axial static and dynamic stiffness measurement of planetary roller screw |
| 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 |
| CN110375938A (en) * | 2019-07-05 | 2019-10-25 | 上海理工大学 | Headstock for cylindrical grinding machine dynamic stiffness measurement device and method |
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