CN110132575A - A kind of test platform of ball screw system wear-out life - Google Patents
A kind of test platform of ball screw system wear-out life Download PDFInfo
- Publication number
- CN110132575A CN110132575A CN201910398025.4A CN201910398025A CN110132575A CN 110132575 A CN110132575 A CN 110132575A CN 201910398025 A CN201910398025 A CN 201910398025A CN 110132575 A CN110132575 A CN 110132575A
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- CN
- China
- Prior art keywords
- ball screw
- test platform
- out life
- screw system
- system wear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
-
- 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
- G01N3/56—Investigating resistance to wear or abrasion
Abstract
The invention discloses a kind of test platforms of ball screw system wear-out life, including laser head, further include being correspondingly arranged on reflection unit along the laser direction that the laser head issues, linear interference instrument is set between the reflection unit and laser head, and the reflection unit bottom is connected with mechanism for testing.Previous test platform uses human eye observation, there is no influences situations such as considering material heat, air pressure to the ball screw service life, test platform architecture proposed by the present invention is simple, under the premise of not dismantling ball-screw, abrasion loss is characterized by the backhaul difference of laser, and then the service life of ball screw is tested, it ensure that lead screw is intact and convenient test is easy, as a result reliably.
Description
Technical field
The present invention relates to mechanical test fields, specifically, being related to a kind of test platform of ball screw system wear-out life.
Background technique
Laser has many advantages, such as high intensity, highly directive, space same tone, narrow bandwidth and height monochromaticjty.Often at present
For measuring the interferometer of length, mainly based on Michelson's interferometer, and using frequency stabilization He-Ne Lasers as light source, one is constituted
A measuring system with interference effect.Laser interferometer can cooperate various refracting telescopes, reflecting mirror etc. to make linear position, speed
Degree, angle, true Pingdu, straigheness, the depth of parallelism and verticality etc. measure work, and can be used as precision instrument machine or measuring instrument
Correction work.Laser interferometer be mainly used for 1. geometric accuracy detection, can be used for detecting straightness, verticality, pitching and beat,
Flatness, depth of parallelism etc.；2. the detection of position precision and its automatic compensation；3. the detection of numerical control rotating platform indexing accuracy and its automatic
Compensation；4. the detection of twin shaft positioning accuracy and its automatic compensation；5. numerically-controlled machine tool dynamic property detects.
Precise ball screw pair is the key feature of numerically-controlled machine tool, and the height of manufacture level is largely determined
The accuracy of numerically-controlled machine tool is determined.Ball screw assembly, after a certain period of use time, surfacing have part peeling, ball and
Track generates gap, directly affects the equipment service precision such as lathe.The outer dimension of ball and track, material technology, processing work
Skill, used operating condition are the key that correct understanding lead screw mechanical property, abrasion, service life.Usual people dismantle the lead screw of abrasion
The abrasion loss of region measurement lead screw pair, it is time-consuming and laborious, and being dismounted for multiple times, the abrasion loss of lead screw pair is repeatedly measured, coup injury is easy
Lead screw, repeat assembly there may be new trueness errors, and be easy to cause after dismantling dress unmatch or assemble it is pretty troublesome.
Therefore, the experiment test for realizing that lead screw pair carries out mechanical property entry in the case where not tearing open is very necessary
, and the exploitation of relevant experiment test device is indispensable.As engineering goods, numerically-controlled machine tool are to high speed, high-precision
Degreeization, Composite and environmental protection direction are developed, and propose increasingly higher demands to the performance of ball screw assembly,.Lead screw pair abrasion
Lacking with experimental data is measured, the research of lead screw pair mechanical model is had adverse effect on.Abrasion loss is ball screw assembly,
Important service performance parameter, it directly influence positioning accuracy, the loss of service life energy, the variation of temperature (excessively
Temperature rise will lead to lubricant deteriorate, abrasion aggravation, even result in working surface burn) and noise, vibration variation, therefore
The measurement of wear-out life is that ball screw assembly, is necessary.
Summary of the invention
In view of this, advantage is knot the object of the present invention is to provide the test platform of a kind of ball and screw rod wear-out life
Structure is simple, under the premise of not dismantling ball-screw, characterizes abrasion loss by the backhaul difference of laser, and then test ball screw
Service life ensure that lead screw is intact and convenient test is easy, as a result reliably.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of test platform of ball screw system wear-out life, including laser head further include issuing along the laser head
Laser direction be correspondingly arranged on reflection unit, between the reflection unit and laser head be arranged linear interference instrument, the reflection
Bottom of device is connected with mechanism for testing.
Further, the mechanism for testing includes workbench and catching device, the upper surface of the reflection unit and workbench
The lower surface of connection, the catching device and workbench connects.
Further, the upper surface setting air temperature sensor and material temperature sensor of the workbench, the air
Temperature sensor and material temperature sensor are connect with air pressure and humidity sensor.
Further, the catching device includes the nut connecting with the workbench and movement portion.
Further, the movement portion includes the servo motor being sequentially arranged along the axis direction of the nut, fixing end I
With fixing end II, the fixing end I and fixing end II are separately positioned on the both ends of screw rod.
Further, fixed device I is arranged in the fixing end I, for limiting the axial direction and radial direction of the screw rod
Movement.
Further, fixed device II is arranged in the fixing end II, for limiting the movement of the screw rod radial direction.
Further, the reflection unit include the first reflecting mirror and the second reflecting mirror, one end of first reflecting mirror with
One end of second reflecting mirror abuts.
Further, first reflecting mirror and the angle of horizontal direction are equal to the folder of second reflecting mirror and horizontal direction
Angle.
Further, the linear interference instrument is fixed on one end of machine tool chief axis.
The beneficial effects of the present invention are:
Situations such as previous test platform uses human eye observation, and there is no consideration material heats, air pressure is to ball wire
The influence in bar service life, test platform architecture proposed by the present invention is simple, under the premise of not dismantling ball-screw, passes through laser
Backhaul difference characterizes abrasion loss, and then tests the service life of ball screw, ensure that lead screw is intact and convenient test is easy, as a result
Reliably.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target and other advantages of the invention can be wanted by following specification and right
Book is sought to be achieved and obtained.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, in which:
Attached drawing 1 is schematic structural view of the invention；
Attached drawing 2 is reflection unit structural schematic diagram of the present invention；
Attached drawing 3 is test result of embodiment of the present invention figure.
Specific embodiment
Hereinafter reference will be made to the drawings, and a preferred embodiment of the present invention will be described in detail.It should be appreciated that preferred embodiment
Only for illustrating the present invention, rather than limiting the scope of protection of the present invention.
The invention proposes a kind of test platforms of ball screw system wear-out life, as shown in Figure 1, include laser head 1,
Further include being correspondingly arranged on reflection unit 4 along the laser direction that laser head issues, line is set between reflection unit 4 and laser head 1
Property interferometer 2, linear interference instrument 2 are fixed on one end of machine tool chief axis 7, and 4 bottom of reflection unit is connected with mechanism for testing.Test machine
Structure includes workbench 14 and catching device, and reflection unit 4 is connect with the upper surface of workbench 14, catching device and workbench 14
Lower surface connection, the upper surface setting air temperature sensor 3 and material temperature sensor 5 of workbench 14, air themperature sensing
Device 3 and material temperature sensor 5 are connect with air pressure and humidity sensor 6, and connection type is conducting wire connection.Air themperature
Air themperature, pressure when sensor 3, material temperature sensor 5 and air pressure and humidity sensor 6 are used for collecting test and
The temperature of humidity and workbench 14, brings into and forms correction factor in built-in algorithm, to avoid air themperature, pressure and humidity with
And the temperature of workbench 14 is influenced to test result.When test, backhaul difference and Air Temperature that linear interference instrument 2 is tested out
Air themperature, pressure and humidity that degree sensor 3, material temperature sensor 5 and air pressure and humidity sensor 6 measure and
The temperature of workbench 14 substitutes into the built-in algorithm of PC machine, calculates that final backhaul is poor, by final backhaul difference and testing time
Functional image is shown in PC machine.
As a further improvement, catching device includes the nut 9 connecting with workbench 14 and movement portion, movement portion includes edge
The axis direction servo motor 8, fixing end I10 and the fixing end II 13 that are sequentially arranged of nut 9, fixing end I10 and fixing end
II 13 are separately positioned on the both ends of screw rod, between space be used to that the screw rod of test, servo motor 8 and fixing end I10 to be arranged
Connection type be flanged joint, between screw rod and nut 9 gap setting test ball, the size of nut 9 can root
It is adjusted according to the size of screw rod and ball.Fixed device I11 is arranged in fixing end I10, for limiting the axial direction side of the screw rod
To the movement with radial direction, fixed device II 12 is arranged in fixing end II 13, for limiting the movement of the screw rod radial direction.
It is multiple clamp nuts that device I11 and fixed device II 12 are fixed in the present embodiment, by the position-limiting action of clamp nut, is come
Guarantee that screw rod is reciprocating along the axis direction of screw rod in test.
As a further improvement, as shown in Fig. 2, reflection unit includes the first reflecting mirror 41 and the second reflecting mirror 42.First
Reflecting mirror 41 and the angle of horizontal direction are equal to the angle of the second reflecting mirror 42 and horizontal direction, are 45 °.With this, laser into
The route direction for entering the first reflecting mirror 41 is parallel with the direction of route that laser is returned through the second reflecting mirror 42, convenient for backhaul difference
It calculates.
Testing procedure of the invention is as follows:
1. test block (screw rod and ball) is set in nut 9, fixing end I10 and fixing end II 13 are arranged in screw rod
Both ends, locking locking nut (i.e. fixed device I11 and fixed device II 12)；
2. setting nut 9 in the single distance that test screw rod moves back and forth is 300mm, 600mm and 900mm；
3. installing the components such as laser head 1, linear interference instrument 2, reflection unit 4 by fixed position, 1 power supply of laser head is opened
And servo motor power supply, start to test.
Test results are shown in figure 3, testing time 875h, when test screw rod move back and forth single distance be 300mm,
600mm and 900mm, measured backhaul difference do not occur the trend significantly increased, therefore the silk at 750h, 755h and 760h
The wear-out life of bar and ball is between 750h~760h.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of test platform of ball screw system wear-out life, including laser head, it is characterised in that: further include swashing along described
The laser direction that shaven head issues is correspondingly arranged on reflection unit, and linear interference instrument is arranged between the reflection unit and laser head,
The reflection unit bottom is connected with mechanism for testing.
2. a kind of test platform of ball screw system wear-out life according to claim 1, it is characterised in that: the survey
Test-run a machine structure includes workbench and catching device, and the upper surface of the reflection unit and workbench connects, the catching device and work
Make the lower surface connection of platform.
3. a kind of test platform of ball screw system wear-out life according to claim 2, it is characterised in that: the work
Make the upper surface setting air temperature sensor and material temperature sensor of platform, the air temperature sensor and material temperature pass
Sensor is connect with air pressure and humidity sensor.
4. a kind of test platform of ball screw system wear-out life according to claim 2, it is characterised in that: described to hold
Connection device includes the nut connecting with the workbench and movement portion.
5. a kind of test platform of ball screw system wear-out life according to claim 4, it is characterised in that: the fortune
Dynamic portion includes the servo motor, fixing end I and fixing end II being sequentially arranged along the axis direction of the nut, the fixing end
I and fixing end II are separately positioned on the both ends of screw rod.
6. a kind of test platform of ball screw system wear-out life according to claim 5, it is characterised in that: described solid
Fixed device I is arranged in fixed end I, for limiting the axial direction of the screw rod and the movement of radial direction.
7. a kind of test platform of ball screw system wear-out life according to claim 5, it is characterised in that: described solid
Fixed device II is arranged in fixed end II, for limiting the movement of the screw rod radial direction.
8. a kind of test platform of ball screw system wear-out life according to claim 1, it is characterised in that: described anti-
Injection device includes the first reflecting mirror and the second reflecting mirror, and one end of first reflecting mirror is abutted with one end of the second reflecting mirror.
9. a kind of test platform of ball screw system wear-out life according to claim 8, it is characterised in that: described
One reflecting mirror and the angle of horizontal direction are equal to the angle of second reflecting mirror and horizontal direction.
10. a kind of test platform of ball screw system wear-out life according to claim 1, it is characterised in that: described
Linear interference instrument is fixed on one end of machine tool chief axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910398025.4A CN110132575A (en) | 2019-05-14 | 2019-05-14 | A kind of test platform of ball screw system wear-out life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910398025.4A CN110132575A (en) | 2019-05-14 | 2019-05-14 | A kind of test platform of ball screw system wear-out life |
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| Publication Number | Publication Date |
|---|---|
| CN110132575A true CN110132575A (en) | 2019-08-16 |
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|---|---|---|---|
| CN201910398025.4A Pending CN110132575A (en) | 2019-05-14 | 2019-05-14 | A kind of test platform of ball screw system wear-out life |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014311A (en) * | 2017-05-25 | 2017-08-04 | 南京理工大学 | Raceway Surface inspection devices and methods therefor in a kind of new pattern rolling ball feed screw nut |
| CN206847571U (en) * | 2017-05-25 | 2018-01-05 | 南京理工大学 | Raceway Surface inspection device in a kind of new pattern rolling ball feed screw nut |
| CN107784174A (en) * | 2017-10-26 | 2018-03-09 | 河南科技大学 | A kind of screw support bearings wear-out life computational methods |
| CN108414229A (en) * | 2018-05-04 | 2018-08-17 | 上海大学 | A kind of automatic type deep groove ball bearing wear-out life testing machine |
| CN108490878A (en) * | 2018-03-17 | 2018-09-04 | 北京工业大学 | A kind of numerically-controlled machine tool combination linear feed unit wear law test method |
| CN108645616A (en) * | 2018-06-26 | 2018-10-12 | 北京工业大学 | The random abrasion test method of ball screw assembly, based on preload with feeding rotating speed |
-
2019
- 2019-05-14 CN CN201910398025.4A patent/CN110132575A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014311A (en) * | 2017-05-25 | 2017-08-04 | 南京理工大学 | Raceway Surface inspection devices and methods therefor in a kind of new pattern rolling ball feed screw nut |
| CN206847571U (en) * | 2017-05-25 | 2018-01-05 | 南京理工大学 | Raceway Surface inspection device in a kind of new pattern rolling ball feed screw nut |
| CN107784174A (en) * | 2017-10-26 | 2018-03-09 | 河南科技大学 | A kind of screw support bearings wear-out life computational methods |
| CN108490878A (en) * | 2018-03-17 | 2018-09-04 | 北京工业大学 | A kind of numerically-controlled machine tool combination linear feed unit wear law test method |
| CN108414229A (en) * | 2018-05-04 | 2018-08-17 | 上海大学 | A kind of automatic type deep groove ball bearing wear-out life testing machine |
| CN108645616A (en) * | 2018-06-26 | 2018-10-12 | 北京工业大学 | The random abrasion test method of ball screw assembly, based on preload with feeding rotating speed |
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| PB01 | Publication | ||
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Application publication date: 20190816 |