CN106840558A - Dynamic pressure spindle rigidity testing system - Google Patents
Dynamic pressure spindle rigidity testing system Download PDFInfo
- Publication number
- CN106840558A CN106840558A CN201710053656.3A CN201710053656A CN106840558A CN 106840558 A CN106840558 A CN 106840558A CN 201710053656 A CN201710053656 A CN 201710053656A CN 106840558 A CN106840558 A CN 106840558A
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- module
- dynamic pressure
- pressure spindle
- load
- bearing
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Classifications
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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
-
- 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
Abstract
The invention discloses a kind of dynamic pressure spindle rigidity testing system, including：Stress module, stress module is provided with dynamic pressure spindle, and the periphery of dynamic pressure spindle is arranged with bearing；Fixing axle bearing sleeve, fixing axle bearing sleeve is set in bearing outer ring, and fixing bearing is arranged with hook, links up with for for stress module configures weight；Stuck-module, stuck-module is located at the lower section of stress module；Load module is applied, load module is applied and is arranged at stuck-module for bearing imposed load；Force-measuring module, force-measuring module is located to apply apply load module to bearing imposed load F for measurement in load module；Displacement measurement module, displacement measurement module is oppositely arranged the radial displacement S for measuring dynamic pressure spindle with dynamic pressure spindle；Control module, control module respectively with apply carry module, force-measuring module and displacement measurement module be connected and receive force-measuring module and displacement measurement module output signal calculating dynamic pressure spindle stiffness K=F/S.Dynamic pressure spindle rigidity testing system security according to embodiments of the present invention and the accuracy of measurement are high.
Description
Technical field
The present invention relates to main axis stiffness technical field of measurement and test, more particularly to a kind of dynamic pressure spindle rigidity testing system.
Background technology
The method of traditional measurement main axis stiffness is directly to static main shaft imposed load, while measuring main shaft in force
Deformation on direction, so as to calculate rigidity.For dynamic pressure spindle system, could react actual in main shaft normal rotational
System stiffness, it is contemplated that the rotational characteristic in dynamic pressure spindle rigidity test, general test system cannot be measured accurately safely
Go out its true stiffness.
The content of the invention
It is contemplated that at least solving one of above-mentioned technical problem to a certain extent.
Therefore, the present invention proposes a kind of dynamic pressure spindle rigidity testing system, the dynamic pressure spindle rigidity testing system security
High and measurement is precisely.
Dynamic pressure spindle rigidity testing system according to embodiments of the present invention includes：Stress module, the stress module is provided with
Dynamic pressure spindle, the periphery of the dynamic pressure spindle is arranged with bearing；Fixing axle bearing sleeve, the fixing axle bearing sleeve is set in the bearing
Outer ring, the fixing bearing is arranged with hook, described to link up with for for the stress module configures weight；Stuck-module, it is described
Stuck-module is located at the lower section of the stress module；Apply load module, it is described apply load module and be arranged on the stuck-module be used for
To the bearing imposed load；Force-measuring module, the force-measuring module is located at described applying and described apply load mould for measuring in load module
Block is to the bearing imposed load F；Displacement measurement module, institute's displacement measurement module and the dynamic pressure spindle be oppositely arranged for
Measure the radial displacement S of the dynamic pressure spindle；Control module, the control module applies load module, the dynamometry with described respectively
Module is connected with institute displacement measurement module and receives the output signal of the force-measuring module and institute's displacement measurement module and calculates
Stiffness K=the F/S of the dynamic pressure spindle.
Dynamic pressure spindle rigidity testing system according to embodiments of the present invention, carries module loading on bearing, and lead to by applying
Cross control module control and apply load module loading in bearing load size, receive the output signal of force-measuring module and displacement measurement module
The rigidity of dynamic pressure spindle is drawn, the security of dynamic pressure spindle rigidity testing system and the accuracy of measurement is improve.
In addition, dynamic pressure spindle rigidity testing system according to embodiments of the present invention, can also have following additional technology
Feature：
According to one embodiment of present invention, the bearing is rolling bearing.
According to one embodiment of present invention, the load module of applying includes：Screw-drive mechanism, the screw-drive mechanism
Upper end stop the bottom for being butted on the fixing axle bearing sleeve.
According to one embodiment of present invention, the load module of applying also includes：Servomotor, the servomotor is located at institute
State on stuck-module and the driving that is connected with the control module screw-drive mechanism motion.
According to one embodiment of present invention, the stuck-module includes：Workbench, the servomotor is located at described
On workbench；Magnetic base, the magnetic base is located at the bottom of the workbench.
According to one embodiment of present invention, institute's displacement measurement module includes：Support frame, one end of support frame as described above sets
On the workbench, the other end of support frame as described above is upwardly extended；Laser displacement sensor, the laser displacement sensor
Being located at the other end of support frame as described above is used to detect the radial displacement of the dynamic pressure spindle.
According to one embodiment of present invention, the workbench is movably arranged on the magnetic base.
According to one embodiment of present invention, the load module of applying is bolted on the stuck-module.
According to one embodiment of present invention, the control module is single-chip microcomputer, the single-chip microcomputer and the servomotor,
Force snesor and laser displacement sensor are electrically connected.
According to one embodiment of present invention, the fixing axle bearing sleeve includes：First clip and the second clip, described first
After clip and second clip are set in the bearing outer ring, one end of first clip and second clip passes through spiral shell
Tether and connect.
According to one embodiment of present invention, the dynamic pressure spindle rigidity testing system also includes：Sleeve, the sleeve sets
In first clip and the other end of second clip, the sleeve respectively with first clip and second clip
It is connected by screw, the load module of applying is to the sleeve imposed load.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the front view of dynamic pressure spindle rigidity testing system according to an embodiment of the invention；
Fig. 2 is the side view of dynamic pressure spindle rigidity testing system according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Dynamic pressure spindle rigidity testing system 100 according to embodiments of the present invention, dynamic pressure master are described referring to Fig. 1-Fig. 2
Axle rigidity testing system 100 can measure rigidity of the dynamic pressure spindle 11 in inactive state and rotary state.
As depicted in figs. 1 and 2, dynamic pressure spindle rigidity testing system 100 can substantially include：Stress module 10, stent
Block 20, apply load module 30, force-measuring module 70, displacement measurement module 40 and control module 50.Wherein, force-measuring module 70 can be power
Sensor.
Specifically, stress module 10 is provided with dynamic pressure spindle 11, and the periphery of dynamic pressure spindle 11 is arranged with bearing 12, fixing bearing
Set 13 is located at the outer ring of bearing 12, and fixing axle bearing sleeve 13 is provided with hook 14, and hook 14 is used to configure weight for stress module 10, you can
The actual dynamic pressure spindle 11 of simulation drives emery wheel to rotate formed stiffness characteristics.Stuck-module 20 is located under stress module 10
Side.Applying load module 30 and being arranged on stuck-module 20 is used for the imposed load of bearing 12.Force-measuring module 70 is located at applies load module 30
On for measurement apply load module 30 to the applying power F of bearing 12.Displacement measurement module 40 is oppositely arranged for surveying with dynamic pressure spindle 11
Measure the radial displacement S of dynamic pressure spindle 11.Control module 50 carries module 30, force-measuring module 70 and displacement measurement module 40 with applying respectively
It is connected and receives the stiffness K=F/S of the output signal calculating dynamic pressure spindle 11 of force-measuring module 70 and displacement measurement module 40.Its
In, bearing 12 can be rolling bearing 12.
That is, when the rigidity of dynamic pressure spindle 11 is measured, applying load module 30 and acting on bearing 12, by bearing 12
Dynamic pressure spindle 11 is transferred load to, the security of measurement dynamic pressure spindle 11 is improved.
Load module 30 is applied by the control of control module 50 and loads on the magnitude of load of bearing 12, and receive force-measuring module 70 and position
The output signal of shift measurement module 40, such that it is able to accurately measure the rigidity of dynamic pressure spindle 11.
In short, dynamic pressure spindle rigidity testing system 100 according to embodiments of the present invention, is loaded on by applying load module 30
On bearing 12, and control to apply load module 30 by control module 50 and load on the magnitude of load of bearing 12, receive the He of force-measuring module 70
The output signal of displacement measurement module 40 draws the rigidity of dynamic pressure spindle 11, improves dynamic pressure spindle rigidity testing system 100
Security and the accuracy of measurement.
In some embodiments of the invention, the outer peripheral face of bearing 12 is provided with two clamps for extending downwardly and being oppositely arranged
121, two clamps 121 limit draw-in groove.
Applying load module 30 can include：Screw-drive mechanism 31 and servomotor 32.Stop the upper end of screw-drive mechanism 31
It is against the bottom of fixing axle bearing sleeve 13.
Alternatively, the bottom of fixing axle bearing sleeve can be provided with the clamp (not shown) being oppositely arranged, clamp and clamp it
Between limit draw-in groove, wherein, apply load module 30 can be bolted on stuck-module 20.Load module 30 will be applied and install solid
It is scheduled on before applying load module 30, screw-drive mechanism 31 and draw-in groove matching relationship can be pre-adjusted so that screw-drive mechanism
31 coordinate with draw-in groove gap.Thus, it is possible to ensure that applying the loading load concentration for carrying module 30 acts on bearing 12, it is to avoid be subject to
The interference of clamp 121.
Force-measuring module 70 is located at the upper end of screw-drive mechanism 31.Servomotor 32 be located on stuck-module 20 and with control
Module 50 is connected and drives screw-drive mechanism 31 to move.That is, controlling the power output of servomotor 32 by control module 50
Square, is loaded by screw-drive mechanism 31 to force-measuring module 70 and dynamic pressure spindle 11, such that it is able to pass through force-measuring module 70
Monitoring at any time puts on the load on bearing 12.
Further, as depicted in figs. 1 and 2, stuck-module 20 can include：Workbench 21 and magnetic base 22.Watch
Motor 32 is taken to be located on workbench 21.Magnetic base 22 is located at the bottom of workbench 21.Can be by by magnetic base 22
Stuck-module 20 is fixed on lathe correct position, is easy to carry out rigidity test to dynamic pressure spindle 11.
Alternatively, displacement measurement module 40 includes：Support frame 41 and laser displacement sensor 42.As shown in figure 1, support frame
41 one end is located on workbench 21, and the other end of support frame 41 is upwardly extended.Laser displacement sensor 42 is located at support frame
41 other end is used to detect the radial displacement of dynamic pressure spindle 11.It is understood that after dynamic pressure spindle 11 is subject to external force loading
Elastic deformation can occur, therefore, the radial displacement of dynamic pressure spindle 11 can be accurately measured by laser displacement sensor 42.
Alternatively, control module 50 can be single-chip microcomputer, and single-chip microcomputer is passed with servomotor 32, force snesor and laser displacement
The communication connection of sensor 42.
In a specific embodiment of the invention, dynamic pressure spindle rigidity testing system 100 can substantially include：Stress module
10th, stuck-module 20, apply load module 30, force-measuring module 70, displacement measurement module 40 and control module 50.
Specifically, stress module 10 is provided with dynamic pressure spindle 11, and the periphery of dynamic pressure spindle 11 is arranged with bearing 12.The fixation
Module 20 is located at the lower section of the stress module 10.Wherein, stuck-module 20 includes：Workbench 21 and magnetic base 22.Watch
Motor 32 is taken to be located on workbench 21.Magnetic base 22 is located at the bottom of workbench 21.
Applying load module 30 and being arranged on stuck-module 20 is used for the imposed load of bearing 12.Applying load module 30 includes：Spiral
Transmission mechanism 31 and servomotor 32.Stretch into draw-in groove the upper end of screw-drive mechanism 31.Servomotor 32 is located at stuck-module
The driving screw-drive mechanism 31 that is connected on 20 and with control module 50 is moved.
Force-measuring module 70 is located at described applying and apply for detecting described load 30 pairs of bearings 12 of module of applying in load module 30
Load F.Wherein, force-measuring module 70 can be force snesor.
Displacement measurement module 40 is oppositely arranged the radial displacement S for measuring dynamic pressure spindle 11 with dynamic pressure spindle 11.Displacement
Measurement module 40 can include：Support frame 41 and laser displacement sensor 42.One end of support frame 41 is located on workbench 21,
The other end of support frame 41 is upwardly extended.The other end that laser displacement sensor 42 is located at support frame 41 is used to detect dynamic pressure spindle
11 radial displacement.
Control module 50 carries module 30, force-measuring module 70 and displacement measurement module 40 and is connected and receives dynamometry mould with applying respectively
The output signal of block 70 and displacement measurement module 40 calculates the stiffness K=F/S of dynamic pressure spindle 11.Wherein, control module 50 can be with
It is single-chip microcomputer, single-chip microcomputer is connected with servomotor 32, force snesor and the communication of laser displacement sensor 42.Single-chip microcomputer can be by load
With displacement output to display 60, and calculate the rigidity of dynamic pressure spindle 11.
In one particular embodiment of the present invention, with reference to Fig. 1 and Fig. 2, fixing axle bearing sleeve 13 can include：First clip
131 and second clip 132, after the first clip 131 and the second clip 132 are set in the outer ring of bearing 12, the first clip 131 and second
One end of clip 132 is bolted.Thus, it is possible to improve the cooperation intensity between bearing 12 and dynamic pressure spindle 11, improve
The accuracy of dynamic pressure spindle rigidity testing system measurement.
Shown referring to Figures 1 and 2, dynamic pressure spindle rigidity testing system 100 can also include：Sleeve 15.Sleeve 15 is located at
The other end of the first clip 131 and the second clip 132, sleeve 15 passes through screw with the first clip 131 and the second clip 132 respectively
Connection, applies load module 30 to the imposed load of sleeve 15.
Wherein, applying load module 30 can be bolted on stuck-module 20.Load module 30 will be applied to be fixed on
Before applying load module 30, screw-drive mechanism 31 and the matching relationship of sleeve 15 can be pre-adjusted so that screw-drive mechanism 31
Coordinate with the gap of sleeve 15.Thus, it is possible to ensure that applying the loading load concentration for carrying module 30 acts on bearing 12, it is to avoid be subject to
The interference of sleeve 15.
Force-measuring module 70 is located at the upper end of screw-drive mechanism 31.Servomotor 32 be located on stuck-module 20 and with control
Module 50 is connected and drives screw-drive mechanism 31 to move.That is, control module 50 indicates the output torque of servomotor 32, lead to
Cross screw-drive mechanism 31 to load force-measuring module 70 and dynamic pressure spindle 11, supervised at any time such that it is able to pass through force-measuring module 70
Control puts on the load on bearing 12.
The method of testing of the dynamic pressure spindle rigidity testing system of above-mentioned specific embodiment is described below.
The first step by stress module, apply load module, force-measuring module and displacement measurement module it is mounted in place.
Specifically, stuck-module is fixed on by lathe correct position by magnetic base first, by bolt by Shi Zaimo
Block is fixed on workbench appropriate location, can suitably mobile working platform position in the horizontal direction cause screw-drive mechanism
Upper end and draw-in groove gap coordinate；Then displacement measurement module is fixed on workbench and causes laser displacement sensor and move
Pressure main shaft is oppositely arranged；Finally dynamic pressure spindle is installed on bearing.
Second step measures rigidity of the dynamic pressure spindle in the case of rotating speed high and high-torque.
First by single-chip microcomputer order servomotor output torque, bearing and force snesor are controlled by screw-drive mechanism
Loaded；Single-chip microcomputer connection receives the load signal of force snesor and the displacement signal of laser displacement sensor, when load reaches
During to specified requirement, single-chip microcomputer by load now and displacement output to display, and can calculate the rigidity of dynamic pressure spindle.
In the description of the invention, it is to be understood that term " on ", D score ", bottom ", " interior ", the side of the instruction such as " outward "
Position or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and described with simplified,
Rather than indicate imply signified device or element must have specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be machine
Tool is connected, or electrically connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection inside part.For the ordinary skill in the art, can as the case may be understand above-mentioned term in this hair
Concrete meaning in bright.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included, it is also possible to including the first and second features be not directly contact but by it
Between other characterisation contact.And, fisrt feature second feature " on ", " top " and " above " include that first is special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or be merely representative of
Fisrt feature level height is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from principle of the invention and objective
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (11)
1. a kind of dynamic pressure spindle rigidity testing system, it is characterised in that including：
Stress module, the stress module includes：
Dynamic pressure spindle, the periphery of the dynamic pressure spindle is arranged with bearing；
Fixing axle bearing sleeve, the fixing axle bearing sleeve is set in the bearing outer ring, and the fixing bearing is arranged with hook, the extension
Hook is used to configure weight for the stress module；
Stuck-module, the stuck-module is located at the lower section of the stress module；
Load module is applied, the load module of applying is arranged on the stuck-module for the bearing imposed load；
Force-measuring module, the force-measuring module is located at described applying and the bearing is applied for measuring the load module of applying in load module
Load F；
Displacement measurement module, institute's displacement measurement module is oppositely arranged for measuring the dynamic pressure spindle with the dynamic pressure spindle
Radial displacement S；
Control module, the control module applies load module, the force-measuring module and institute's displacement measurement module phase with described respectively
Connect and receive the stiffness K=F/S of the output signal calculating dynamic pressure spindle of the force-measuring module and institute's displacement measurement module.
2. dynamic pressure spindle rigidity testing system according to claim 1, it is characterised in that the bearing is rolling bearing.
3. dynamic pressure spindle rigidity testing system according to claim 2, it is characterised in that the load module of applying includes：Spiral shell
Rotation transmission mechanism, the bottom for being against the fixing axle bearing sleeve is stopped in the upper end of the screw-drive mechanism.
4. dynamic pressure spindle rigidity testing system according to claim 3, it is characterised in that the load module of applying also includes：
Servomotor, the servomotor is located on the stuck-module and the driving spiral that is connected with the control module is passed
Dynamic mechanism kinematic.
5. dynamic pressure spindle rigidity testing system according to claim 4, it is characterised in that the stuck-module includes：
Workbench, the servomotor is located on the workbench；
Magnetic base, the magnetic base is located at the bottom of the workbench.
6. dynamic pressure spindle rigidity testing system according to claim 5, it is characterised in that institute's displacement measurement module bag
Include：
Support frame, one end of support frame as described above is located on the workbench, and the other end of support frame as described above is upwardly extended；
Laser displacement sensor, the other end that the laser displacement sensor is located at support frame as described above is used to detect the dynamic pressure master
The radial displacement of axle.
7. dynamic pressure spindle rigidity testing system according to claim 5, it is characterised in that the workbench is movably
It is located on the magnetic base.
8. dynamic pressure spindle rigidity testing system according to claim 5, it is characterised in that the load module of applying passes through bolt
It is fixed on the stuck-module.
9. dynamic pressure spindle rigidity testing system according to claim 6, it is characterised in that the control module is monolithic
Machine, the single-chip microcomputer is connected with the communication of the servomotor, force snesor and laser displacement sensor.
10. dynamic pressure spindle rigidity testing system according to claim 1, it is characterised in that the fixing axle bearing sleeve includes：
After first clip and the second clip, first clip and second clip are set in the bearing outer ring, first card
One end of hoop and second clip is bolted.
11. dynamic pressure spindle rigidity testing systems according to claim 10, it is characterised in that also include：Sleeve, the set
Cylinder is located at the other end of first clip and second clip, the sleeve respectively with first clip and described second
Clip is connected by screw, and the load module of applying is to the sleeve imposed load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053656.3A CN106840558B (en) | 2017-01-24 | 2017-01-24 | Dynamic pressure spindle rigidity testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053656.3A CN106840558B (en) | 2017-01-24 | 2017-01-24 | Dynamic pressure spindle rigidity testing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106840558A true CN106840558A (en) | 2017-06-13 |
| CN106840558B CN106840558B (en) | 2019-09-17 |
Family
ID=59119912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710053656.3A Active CN106840558B (en) | 2017-01-24 | 2017-01-24 | Dynamic pressure spindle rigidity testing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106840558B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588187A (en) * | 2021-08-24 | 2021-11-02 | 苏州心擎医疗技术有限公司 | Device and method for testing suspension stiffness of rotor |
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| US6553837B1 (en) * | 1999-08-16 | 2003-04-29 | Pruftechnik Dieter Busch Ag | Process and apparatus device for analysis of roller bearings in machines |
| CN101701868A (en) * | 2009-11-17 | 2010-05-05 | 重庆大学 | High-speed electric main shaft dynamic rigidity test device |
| CN201774356U (en) * | 2010-09-09 | 2011-03-23 | 北京工研精机股份有限公司 | Constant pressure preloading device for main shaft bearings of high-speed built-in motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113588187A (en) * | 2021-08-24 | 2021-11-02 | 苏州心擎医疗技术有限公司 | Device and method for testing suspension stiffness of rotor |
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| Publication number | Publication date |
|---|---|
| CN106840558B (en) | 2019-09-17 |
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