CN106885736B - A kind of spindle rotor dynamic stiffness Performance Test System - Google Patents
A kind of spindle rotor dynamic stiffness Performance Test System Download PDFInfo
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- CN106885736B CN106885736B CN201710178599.1A CN201710178599A CN106885736B CN 106885736 B CN106885736 B CN 106885736B CN 201710178599 A CN201710178599 A CN 201710178599A CN 106885736 B CN106885736 B CN 106885736B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0266—Cylindrical specimens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
A kind of spindle rotor dynamic stiffness Performance Test System, including main shaft damping clamp assay platform, damping device is connected with below main shaft damping clamp assay platform, packaged type main shaft clamping device is connected with above main shaft damping clamp assay platform, the spindle rotor interference fit of packaged type main shaft gripping apparatus grips is set with load transfer means, electric vortex type displacement sensor is connected at load transfer means, main shaft damping clamp assay platform is equipped with load cylinder by vertically arranged mode, the front end for loading cylinder connects force sensor, the output shaft top for loading cylinder passes through the top and load transfer means cooperation that exerts a force, electric vortex type displacement sensor, the signal output end of force snesor passes through signal conditioning module, four-way data collecting card is connected with middle control workbench, the test of present invention realization main shaft radial direction dynamic stiffness, it can be effective Solve the problems, such as that main shaft dynamically load and dynamic deformation amount pick up problem, improve main shaft design level of processing.
Description
Technical field
The present invention relates to main shaft dynamic stiffness the field of test technology, and in particular to a kind of spindle rotor dynamic stiffness performance test system
System.
Background technique
High-grade, digitally controlled machine tools are the basic equipments of high-precision digital manufacture, are the important fingers for reacting national manufacture level
Mark.High-speed high-precision main shaft is the core functional components of high-grade, digitally controlled machine tools, and the dynamic characteristic of main shaft will directly affect processing effect
Rate and machining accuracy.Main shaft dynamic characteristic and spindle design and level of processing have direct relationship, therefore, to improve main shaft
Dynamic characteristic must just improve main shaft design processing and manufacturing ability, and main shaft dynamic characteristic may be implemented by main shaft means of testing
Detection, and it is counter push away design level of processing, the processing and manufacturing for effectively improving main shaft is horizontal.Dynamic stiffness is that reaction main shaft dynamic is special
Property important parameter, it is carried out test being of great significance.
After main shaft consigns to user, user can add in conjunction with the processing request of work piece and the working ability of main shaft
The setting of work parameter, due to not having dynamic stiffness parameter, user can not judge the ability that main shaft resists cutting exciting force, be arranged excessive
Processing capacity will cause spindle vibration it is excessive, fever it is serious the problems such as, the serious curtailment main shaft service life；Too small processing capacity is set then
Processing efficiency can seriously be limited.It can be seen that dynamic stiffness parameter carries out work with great for client's normal use electro spindle
Meaning is the important parameter for having to consider and be supplied to client.
The existing mature rigidity test equipment of main shaft industry is unfolded both for Static stiffness, and principle is applied to main shaft
Permanent load picks up the displacement of rotor-support-foundation system corresponding position by sensor or amesdial, then seeks power and deflection
Ratio indicates Static stiffness.Due to being difficult to noiseless load under main shaft current intelligence, so being caused to the test of main shaft dynamic stiffness
Difficulty, the mode that existing idler wheel applies load can cause to wear to spindle rotor surface, and have revolving speed loss, influence test essence
Degree；Although electromagnetism loading method realizes contactless load, but since structure is complicated, high volume applications have certain be stranded
It is difficult.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the object of the present invention is to provide a kind of spindle rotor dynamic stiffness
Energy test macro, realizes the test of main shaft radial direction dynamic stiffness, can be effectively solved main shaft dynamically load problem and dynamic deformation
Pickup problem is measured, main shaft design level of processing is improved.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of spindle rotor dynamic stiffness Performance Test System, including main shaft damping clamp assay platform 2, main shaft damping clamping examination
It tests below platform 2 and is connected with damping device 1, be connected with packaged type main shaft clamping device 3 above main shaft damping clamp assay platform 2,
Load transfer means 9 are set with by interference fit on the spindle rotor 6 that packaged type main shaft clamping device 3 clamps, load passes
Electric vortex type displacement sensor is connected at delivery device 9, the signal output end of electric vortex type displacement sensor passes through the first signal
Conditioning module 5-1 is connected with the first input end of four-way data collecting card 10；
Main shaft damping clamp assay platform 2 is equipped with load cylinder 13 by vertically arranged mode, before loading cylinder 13
End connection force sensor 11, the output shaft top of load cylinder 13 are cooperated by force top 12 and load transfer means 9, are led to
It crosses to exert a force and top 12 apply force in load transfer means 9, the signal output end of force snesor 11 improves mould by second signal
Block 5-2 is connected with the second input terminal of four-way data collecting card 10；
The output end of four-way data collecting card 10 is connected with the input terminal of middle control workbench 14, is taken on middle control workbench 14
Be loaded with signal processing and analysis software, signal processing and analysis Integrated Simulation signal acquisition, signal reject algorithm, Fourier transformation with
And the program of Rigidity Calculation.
The load transfer means 9 include cylinder roller bearing 9-2, are connected with load on the outside of cylinder roller bearing 9-2
It is provided with what fastening screw 9-4 linked into an integrated entity on the outside of lotus transfer device inner ring 9-3, load transfer means inner ring 9-3
Load device outer ring 9-1, cylinder roller bearing 9-2 is more order of magnitude greater than the rigidity of main shaft support bearing angular contact ball bearing.
A kind of test method of spindle rotor dynamic stiffness Performance Test System, comprising the following steps:
1) the distance between packaged type main shaft clamping device 3 and load cylinder 13 are adjusted, tested main shaft is mounted on can
On mobile main shaft clamping device 3, load transfer means 9 are installed to 6 front end of spindle rotor, so that load transfer means 9
Load device outer ring 9-1 faces force top 12, and load transfer means 9 should test to obtain its quality m before the mounting first；
2) eddy current displacement sensor is mounted on the corresponding test position of load transfer means 9, finely tunes current vortex displacement
In sensor to range, signal conditioning module, capture card 10 and middle control workbench 14 are connected；When starting test, middle control work
Platform 14 applies one by control load cylinder 13 and preloads F=mg to load transfer means 9, guarantees the frictional force generated in diameter
The starting moment of friction that cylinder roller bearing 9-2 can be offset upwards collects force signal F by the control of middle control workbench 141
With the displacement signal S of eddy current displacement sensor position1(t), it controls tested main shaft to operate in the case where testing revolving speed, continues control and add
Carrier gas cylinder 13 applies load to F2, synchronous acquisition displacement signal S2(t)；
3) the control collected displacement signal of workbench 14 is time-domain signal in, and signal processing and analysis software carries out FFT to it
Transformation obtains frequency domain amplitude S1(ω) and S2(ω), the then dynamic stiffness under the test revolving speedChange
Test revolving speed is the dynamic stiffness curve for obtaining being distributed with revolving speed.
The invention has the benefit that load cylinder 13 applies load to load transfer means 9, passed by current vortex displacement
Sensor, force snesor 11 and middle control workbench 14 realize the test of main shaft radial direction dynamic stiffness, and the present invention can be effectively solved master
Axis dynamically load problem and dynamic deformation amount pick up problem, improve main shaft design level of processing.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is load transmission cellular construction schematic diagram of the invention.
Specific embodiment
Further details of elaboration is done to the present invention with reference to the accompanying drawings and examples.
Referring to Fig.1, a kind of spindle rotor dynamic stiffness Performance Test System, including main shaft damping clamp assay platform 2, main shaft subtracts
It is connected with damping device 1 below shake clamp assay platform 2, packaged type main shaft folder is connected with above main shaft damping clamp assay platform 2
Device 3 is held, packaged type main shaft clamping device 3 is connect with 2 surface grooves of main shaft damping clamp assay platform by bolt, can be adjusted
It saves different model main shaft and tests the position adjusting of loading section；On the spindle rotor 6 that packaged type main shaft clamping device 3 clamps
Load transfer means 9 are set with by interference fit, and realize load transfer means 9 in master by adjusting sleeve 8 and locking nut 7
Radial positioning on axis rotor 6, the two sides and surface of load transfer means 9 are connected with the first electric vortex type displacement by magnetic support
Sensor 4-1, the second electric vortex type displacement sensor 4-2 and third electric vortex type displacement sensor 4-3, the first electric vortex type
The signal of displacement sensor 4-1, the second electric vortex type displacement sensor 4-2 and third electric vortex type displacement sensor 4-3 are defeated
Outlet is connected by the first signal conditioning module 5-1 with the first input end of four-way data collecting card 10, using three electric whirlpools
Streaming displacement sensor can acquire 9 left, center, right of load transfer means, three item data, take the most useful signal by signal processing
It is calculated；
Load cylinder 13 is equipped with by vertically arranged mode at the mesoporous of main shaft damping clamp assay platform 2, loads gas
The front end of cylinder 13 connects force sensor 11, and the output shaft top of load cylinder 13 passes through force top 12 and load transfer means
9 cooperations, are applied force in load transfer means 9 by force top 12, and load cylinder 13 applies the mode preloaded and offsets load
The gravity of lotus transfer device 9 itself, so that test load is more accurate, the signal output end of force snesor 11 passes through second signal
Conditioning module 5-2 is connected with the second input terminal of four-way data collecting card 10；
The output end of four-way data collecting card 10 is connected with the input terminal of middle control workbench 14, is taken on middle control workbench 14
Be loaded with signal processing and analysis software, signal processing and analysis Integrated Simulation signal acquisition, signal reject algorithm, Fourier transformation with
And the program of Rigidity Calculation.
Referring to Fig. 2, the load transfer means 9 include cylinder roller bearing 9-2, the outside of cylinder roller bearing 9-2
It is connected with load transfer means inner ring 9-3, fastening screw 9-4 connection is provided on the outside of load transfer means inner ring 9-3
Integral load device outer ring 9-1, cylinder roller bearing 9-2 is one bigger than the rigidity of main shaft support bearing angular contact ball bearing
The order of magnitude, this adjustable cylinder roller bearing 9-2 clearance of connection, convenient for effective transmitting of power.
A kind of test method of spindle rotor dynamic stiffness Performance Test System, comprising the following steps:
1) the distance between packaged type main shaft clamping device 3 and load cylinder 13 are adjusted, tested main shaft is mounted on can
On mobile main shaft clamping device 3, load transfer means 9 are installed to 6 front end of spindle rotor using plunging, so that load passes
The load device outer ring 9-1 of delivery device 9 faces force top 12, then installs corresponding adjustment sleeve 8 and locking nut 7,
It should be noted that load transfer means 9 should test to obtain its quality m before the mounting first, in case subsequent calculating uses；It carries
The lower surface of lotus device outer ring 9-1 needs to do roughening treatment, in order to which increasing friction force offsets cylinder roller bearing 9-2's
Pivoting friction torque, the upper surface of load device outer ring 9-1 does fine grinding processing and improves surface smoothness, and flatness is required to reach
To 2 μm, guarantee measuring accuracy；
2) three eddy current displacement sensors are mounted on the corresponding test position of load transfer means 9 with magnetic support, finely tuned
In eddy current displacement sensor to range, signal conditioning module, capture card 10 and middle control workbench 14 are connected；Start to test
When, middle control workbench 14 applies one by control load cylinder 13 and preloads F=mg to load transfer means 9, guarantees to generate
Frictional force can offset the starting moment of friction of cylinder roller bearing 9-2 radially, adopted by the control of middle control workbench 14
Collect force signal F1With the displacement signal S of three eddy current displacement sensor positions1(t), main shaft is tested using Frequency Converter Control to exist
It is operated under test revolving speed, continues control load cylinder 13 and apply load to F2, synchronous acquisition displacement signal S2(t)；
3) the control collected displacement signal of workbench 14 is time-domain signal in, and signal processing and analysis software carries out FFT to it
Transformation obtains frequency domain amplitude S1(ω) and S2(ω), the then dynamic stiffness under the test revolving speedChange
Test revolving speed is the dynamic stiffness curve for obtaining being distributed with revolving speed.
Claims (2)
1. a kind of test method of spindle rotor dynamic stiffness Performance Test System, including main shaft damping clamp assay platform (2), special
Sign is: being connected with damping device (1) below main shaft damping clamp assay platform (2), connects above main shaft damping clamp assay platform (2)
It is connected to packaged type main shaft clamping device (3), the spindle rotor (6) of packaged type main shaft clamping device (3) clamping passes through interference
Engagement sleeves are equipped with load transfer means (9), and load transfer means are connected with electric vortex type displacement sensor, electric vortex type at (9)
The signal output end of displacement sensor is first defeated by the first signal conditioning module (5-1) and four-way data collecting card (10)
Enter end connection；
Main shaft damping clamp assay platform (2) is equipped with load cylinder (13) by vertically arranged mode, load cylinder (13)
Front end connects force sensor (11), and the output shaft top of load cylinder (13) passes through top (12) and the load transfer means of exerting a force
(9) cooperate, by exerting a force, top (12) are applied force on load transfer means (9), and the signal output end of force snesor (11) is logical
Second signal conditioning module (5-2) is crossed to connect with the second input terminal of four-way data collecting card (10)；
The output end of four-way data collecting card (10) is connected with the input terminal of middle control workbench (14), on middle control workbench (14)
Equipped with signal processing and analysis software, signal processing and analysis Integrated Simulation signal acquisition, signal reject algorithm, Fourier transformation
And the program of Rigidity Calculation；
A kind of test method of the spindle rotor dynamic stiffness Performance Test System, comprising the following steps:
1) the distance between packaged type main shaft clamping device (3) and load cylinder (13) are adjusted, tested main shaft is mounted on can
On mobile main shaft clamping device (3), load transfer means (9) are installed to spindle rotor (6) front end, so that load transmission fills
The load device outer ring (9-1) for setting (9), which faces, to exert a force top (12), and load transfer means (9) should be surveyed first before the mounting
Examination obtains its quality m；
2) eddy current displacement sensor is mounted on the corresponding test position of load transfer means (9), fine tuning current vortex displacement passes
In sensor to range, signal conditioning module, four-way data collecting card (10) and middle control workbench (14) are connected；Start to test
When, middle control workbench (14) preloads F=mg by control load cylinder (13) application one and gives load transfer means (9), protects
The frictional force that card generates can offset the starting moment of friction of cylinder roller bearing (9-2) radially, pass through middle control workbench
(14) control collects force signal F1With the displacement signal S of eddy current displacement sensor position1(t), tested main shaft is controlled to test
It is operated under revolving speed, continues control load cylinder (13) and apply load to F2, synchronous acquisition displacement signal S2(t)；
3) control workbench (14) collected displacement signal is time-domain signal in, and signal processing and analysis software carries out FFT change to it
Get frequency domain amplitude S in return1(ω) and S2(ω), the then dynamic stiffness under the test revolving speedChange and surveys
Preliminary operation speed is the dynamic stiffness curve for obtaining being distributed with revolving speed.
2. a kind of test method of spindle rotor dynamic stiffness Performance Test System according to claim 1, it is characterised in that:
The load transfer means (9) include cylinder roller bearing (9-2), are connected with load on the outside of cylinder roller bearing (9-2)
Transfer device inner ring (9-3) is provided with fastening screw (9-4) on the outside of load transfer means inner ring (9-3) and connects into one
The load device outer ring (9-1) of body, cylinder roller bearing (9-2) are one bigger than the rigidity of main shaft support bearing angular contact ball bearing
The order of magnitude.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710178599.1A CN106885736B (en) | 2017-03-23 | 2017-03-23 | A kind of spindle rotor dynamic stiffness Performance Test System |
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| CN201710178599.1A CN106885736B (en) | 2017-03-23 | 2017-03-23 | A kind of spindle rotor dynamic stiffness Performance Test System |
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| CN106885736B true CN106885736B (en) | 2019-08-13 |
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| JP6502976B2 (en) | 2017-02-15 | 2019-04-17 | ファナック株式会社 | Numerical control device |
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| CN108031870A (en) * | 2017-12-04 | 2018-05-15 | 上海理工大学 | A kind of main shaft of numerical control machine tool loading performance test device and test evaluation method |
| CN109175417B (en) * | 2018-09-26 | 2020-07-03 | 江苏师范大学 | Theoretical calculation and actual measurement method for quasi-static deformation of turning workpiece |
| CN109855865A (en) * | 2018-12-27 | 2019-06-07 | 广东省智能制造研究所 | A kind of high-speed electric main shaft accelerating lifetime testing equipment and its test method |
| CN111044242B (en) * | 2019-12-30 | 2021-09-28 | 哈尔滨工业大学 | Rigidity detection device and detection method for main shaft and guide rail of ultra-precise fly-cutting machine tool |
| CN112255579B (en) * | 2020-10-16 | 2023-09-19 | 西华大学 | Test bed |
| CN113188906B (en) * | 2021-04-25 | 2022-05-20 | 重庆科技学院 | Rock uniaxial tension test device and method |
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Effective date of registration: 20210607 Address after: Room 1807, building 3, 311 Yanxin Road, Huishan Economic Development Zone, Wuxi City, Jiangsu Province, 214000 Patentee after: Wuxi Chaotong Intelligent Manufacturing Technology Research Institute Co.,Ltd. Address before: 710000 No.2, 6th floor, unit 1, building 3, No.76 Xiying Road, Yanta District, Xi'an City, Shaanxi Province Patentee before: Yun Xielun |
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