CN107356468A - A kind of wearability test device and method - Google Patents
A kind of wearability test device and method Download PDFInfo
- Publication number
- CN107356468A CN107356468A CN201710571611.5A CN201710571611A CN107356468A CN 107356468 A CN107356468 A CN 107356468A CN 201710571611 A CN201710571611 A CN 201710571611A CN 107356468 A CN107356468 A CN 107356468A
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- China
- Prior art keywords
- friction plate
- spacing hole
- test
- stopping means
- measured
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Classifications
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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
- G01N3/02—Details
-
- 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 present invention provides a kind of wearability test device and method, belongs to wearability test field.The equipment includes stopping means and friction plate；The stopping means is arranged on the top of the friction plate, can be with relative motion with the friction plate；Characterized in that, offer spacing hole on the stopping means；The spacing hole coordinates with the friction plate, for making test specimen to be measured relatively described spacing hole and friction plate random motion in the surface of the friction plate and spacing hole.By the relative motion and cooperation of the spacing hole and the friction plate, make test specimen to be measured in the friction relatively described spacing hole of plate surface and the friction plate random motion, to simulate the actual wear process of test specimen to be measured.
Description
Technical field
The invention belongs to wearability test field, and in particular to a kind of wearability test device and method.
Background technology
Some products (such as wrist-watch, mobile phone, wearing ornament) need and user or other things in use
CONTACT WITH FRICTION repeatedly occurs for body, and this multiplicating contact may cause product surface to wear, so as to influence product it is attractive in appearance very
To performance.Therefore, the anti-wear performance of this kind of product or piece surface is an important quality index, it is necessary to production
The surface abrasion resistance of product or part is tested.
Existing abrasion resistance test method is all to fix test specimen to be measured, is gone to wear test specimen to be measured with measuring head, so as to survey
Obtain the anti-wear performance of product or part.This method can not be well simulation test specimen to be measured actual wear process so that
Tester can not be given intuitively anti-wear performance feeds back.
The content of the invention
In consideration of it, the present invention is intended to provide a kind of wearability test device and method, to simulate the actual mill of test specimen to be measured
Damage process.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of wearability test equipment, including stopping means and friction plate；The stopping means is arranged on the friction plate
Top, can be with relative motion with the friction plate；Spacing hole is offered on the stopping means；The spacing hole rubs with described
Wiping board coordinates, for making test specimen to be measured relatively described spacing hole and described be rubbed in the surface of the friction plate and the spacing hole
Wiping board random motion, to simulate the actual wear process of test specimen to be measured.
According to another embodiment, the equipment also includes supporting plate and power set；The power set with it is described
Stopping means is flexibly connected, for driving the stopping means；The friction plate is detachably arranged in the supporting plate.
According to another embodiment, the equipment also includes supporting plate and power set；The power set with it is described
Friction plate is removably flexibly connected, for driving the friction plate；The stopping means is arranged in the supporting plate.
According to another embodiment, the shape of the spacing hole can be the combination of circular, polygon or both.
According to another embodiment, the equipment also includes spheroid, a diameter of spacing hole depth of the spheroid
1-2 times；The spheroid is placed in the spacing hole, for test specimen random collision to be measured, moved with increasing test specimen to be measured
Randomness.
According to another embodiment, the material of the spheroid is marble, metal or high polymer material.
According to another embodiment, the equipment also includes counter, and the counter is arranged in the supporting plate,
Electrically connected with inductor, for recording the reciprocating number of stopping means or friction plate.
The present invention also provides a kind of abrasion resistance test method using the wearability test equipment, it is characterised in that bag
Include following steps：
S1, make test specimen to be measured relatively described spacing hole and friction in the surface of the friction plate and the spacing hole
Plate random motion；
S2, record the stopping means or the reciprocating number of the friction plate；
S3, the abrasion condition on observation test block surface；
When abrasion occur first in S4, test block surface, stop test；
The reciprocating number is more, and the anti-wear performance on test block surface is better；It is conversely, poorer.
According to another embodiment, the friction plate can be selected and changed as requested.The present invention's is beneficial
Effect：
In the present invention, spacing hole is offered on stopping means, and is arranged at the top of friction plate, spacing hole and friction plate can
With relative motion, in test process, spacing hole coordinates with friction plate causes test specimen to be measured in the surface of friction plate and spacing hole
Interior relative limit hole and friction plate random motion, to simulate the actual wear process of test specimen to be measured, so as to give tester intuitively
Anti-wear performance feeds back.
Further, the friction plate in the present invention can be selected and changed as requested, to simulate actual wear process
The frictional behaviour of middle friction member, is used cooperatively with stopping means, can more really simulate test specimen to be measured in actual life
Actual wear process.
Brief description of the drawings
Fig. 1 is the overall structure figure of wearability test device in the embodiment of the present invention.
Fig. 2 is the cut-away view of wearability test device in the embodiment of the present invention.
Embodiment
Embodiments of the present invention are elaborated below.It is emphasized that what the description below was merely exemplary,
The scope being not intended to be limiting of the invention and its application.
With reference to figure 1 and Fig. 2, the wearability test equipment in the present embodiment include power set, friction plate, stopping means,
Controller and supporting plate 8.
Power set include motor 2, motor connection lever 13, drive link 14, cross bar 15, guide rail 10 and sliding block 9.Motor 2 is fixed
In supporting plate 8, it is connected with one end of motor connection lever 13, the other end of motor connection lever 13 and one end activity of drive link 14
Connection, the other end of drive link 14 are flexibly connected with cross bar 15, and the both ends of cross bar 15 are fixedly installed two sliding blocks 9, sliding block 9
It is used cooperatively with guide rail 10, guide rail 10 is fixedly installed in supporting plate 8.
Friction plate 7 is detachably arranged in supporting plate 8, for abrasion of the simulation test part during actual wear
Part, wear test specimen to be measured.
Friction plate 7 can be selected and changed according to the environment that test specimen to be measured wears in actual life.
In the present embodiment, test specimen to be measured is the Mobile phone mirror head circle of the plated film layer in surface, for the plated film layer of test surfaces
Mobile phone mirror head circle wearability on the table, the surface of friction plate 7 can select have same or similar friction with desktop
The material of performance.
In other embodiments, test specimen to be measured can also be mobile phone, tablet personal computer, wrist-watch, jewellery, cup etc..
In the present embodiment, stopping means is orifice plate 5, offers through hole 4, as spacing hole on orifice plate 5, orifice plate 5 is set
In the top of friction plate 7, it is detachably connected with sliding block 9.In the presence of power set, orifice plate 5 does reciprocal fortune on friction plate 7
It is dynamic.Before testing, test specimen to be measured is placed on to the surface of friction plate 7 by through hole 4；In test process, test specimen to be measured is in orifice plate
Under 5 drive, surface opposing through-bores 4 and the random motion of friction plate 7 in friction plate 7, to simulate the actual wear of test specimen to be measured
Process.
In other embodiments, stopping means can also be the frame of upper and lower opening.
In other embodiments, stopping means is fixedly installed in supporting plate 8, and power set driving friction plate 7 is relative to be limited
The motion of position hole.In test process, test specimen to be measured relative limit hole and friction plate under the collective effect of friction plate 7 and spacing hole
7 motions, it can equally simulate the actual wear process of test specimen to be measured.
In the present embodiment, the quantity of through hole 4 is two；Through hole 4 it is of different sizes；Through hole 4 is shaped as circle.
In other embodiments, the quantity of through hole 4 can also be one or more；The size of through hole 4 can be with identical
Or the existing identical through hole 4 on same orifice plate 5, also there is different through holes 4；The shape of through hole 4 can also be polygon or
The circular combination with polygon of person.Multiple through holes 4 are set to measure the resistance to of multiple test specimens to be measured simultaneously on same orifice plate 5
Performance is ground, sets different size of through hole 4 to be selected according to the size of test specimen to be measured, the scope of application is wider.
In the present embodiment, a marble spheroid 6 is also placed with through hole 4, for test specimen random collision to be measured, with
Increase the randomness of test specimen motion to be measured, so as to preferably simulate movement locus of the test specimen to be measured during actual wear.
In the present embodiment, the deep equality of the diameter of marble ball and through hole 4.In other embodiments, marble ball
Diameter can also be twice of depth of through hole 4.
In other embodiments, the material of spheroid 6 can be with metal or high polymer material, and the quantity of spheroid 6 can be with
For two or more.
In the present embodiment, controller, including power switch 1, counter 11, tune are additionally provided with wearability test equipment
Fast device 12 and inductor 3.Inductor 3 is detachably arranged in supporting plate 8, for monitoring orifice 5 in test process it is reciprocal
The number of motion.Counter 11 is electrically connected with inductor 3, for recording the reciprocating number in test process of orifice plate 5.
Speed regulator 12 is electrically connected with motor 2, for regulating and controlling the rotating speed of motor 2, to control 5 reciprocating frequency of orifice plate.
In other embodiments, stopping means is fixed in supporting plate 8, power set driving friction plate 7 relative limit hole
During motion, inductor 3 is used to monitor the reciprocating number in test process of friction plate 7.Counter 11 and inductor 3 are electrical
Connection, for recording the reciprocating number in test process of friction plate 7.Speed regulator 12 is electrically connected with motor 2, for adjusting
The rotating speed of motor 2 is controlled, to control 7 reciprocating frequency of friction plate.
In the present embodiment, the drive motor connecting rod 13 of motor 2 periodically rotates, and drives cross bar by drive link 14
15 and sliding block 9 do periodic reciprocating motion along guide rail 10, because orifice plate 5 is connected with sliding block 9, so orifice plate 5 is by sliding block 9
Drive moves reciprocatingly, so that through hole 4 drives test block to do random friction on the surface of friction plate 7.
In other embodiments, sliding block 9 is connected with friction plate 7, and under the driving of power set, friction plate 7 is done periodically
Reciprocating motion, by the frictional force between test specimen to be measured, and the mating reaction with spacing hole, test specimen to be measured is being rubbed
Do random friction in the surface of plate 7.
Illustrate wearability test in the present embodiment by taking testing mobile phone camera lens circle anti-wear performance on the table as an example below
Method.
The selection material similar to desktop frictional behaviour is arranged in the wearability test equipment as friction plate 7.
Camera lens circle is fixed on to the camera lens circle installation place of corresponding cell phone rear cover；Then fixed above bonnet one piece with mobile phone shape,
Size is adapted to, and quality is 200g steel disc；The cell phone rear cover of steel disc and camera lens circle will be fixed with, friction is placed on by through hole 4
On plate 7.Turn on the power switch 1, regulation speed regulator 12 make orifice plate 5 with certain frequency band index glass head circle done on friction plate 7 with
Machine friction.At regular intervals, suspend orifice plate 5, take out camera lens circle and observe its abrasion condition, and recording photograph under the microscope,
Then put back in test equipment and continue to test, so repeatedly, peeled off until the block of film layer occurs in camera lens circle rubbing surface, stop surveying
Examination.Read and record 5 reciprocating number of orifice plate, the as abrasion resistance of camera lens circle.Abrasion resistance is bigger, shows camera lens circle
Anti-wear performance it is better；It is otherwise poorer.
In other embodiments, friction plate 7 drives test specimen to be measured to move, and under the cooperation of spacing hole, makes test specimen phase to be measured
To spacing hole and the random motion of friction plate 7, to simulate the actual wear process of test specimen to be measured.
In the present embodiment, through hole 4 is offered on orifice plate 5, and is arranged at the top of friction plate 7, through hole 4 and friction plate 7 can
With relative motion, in test process, through hole 4 coordinates with friction plate 7 causes test specimen to be measured on the surface of friction plate 7 and through hole 4
Interior opposing through-bores 4 and friction plate 7 random motion, to simulate the actual wear process of test specimen to be measured, so as to give tester intuitively
Anti-wear performance feeds back.
Further, in anti-wear performance of the equipment in using the present embodiment come the relative desktop of testing mobile phone camera lens circle,
The surface of friction plate 7 can select the material similar to desktop frictional behaviour as requested, be rubbed with simulating during actual wear
The frictional behaviour of part, it is used cooperatively with orifice plate 5, can more really simulates test specimen to be measured in real-life actual wear
Process.
Above content is to combine specific/preferred embodiment further description made for the present invention, it is impossible to is recognized
The specific implementation of the fixed present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, it can also make some replacements or modification to the embodiment that these have been described,
And these are substituted or variant should all be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of wearability test equipment, including stopping means and friction plate；The stopping means is arranged on the friction plate
Top, can be with relative motion with the friction plate；Characterized in that, offer spacing hole on the stopping means；It is described spacing
Hole and the friction plate coordinate, for make test specimen to be measured in the surface of the friction plate and the spacing hole it is relatively described spacing
Hole and the friction plate random motion, to simulate the actual wear process of test specimen to be measured.
2. wearability test equipment according to claim 1, it is characterised in that also including supporting plate and power set；Institute
State power set to be flexibly connected with the stopping means, for driving the stopping means；The friction plate is removably installed
In the supporting plate.
3. wearability test equipment according to claim 1, it is characterised in that also including supporting plate and power set；Institute
State power set to be removably flexibly connected with the friction plate, for driving the friction plate；The stopping means is arranged on
In the supporting plate.
4. wearability test equipment according to claim 1, it is characterised in that the shape of the spacing hole can be round
The combination of shape, polygon or both.
5. wearability test equipment according to claim 1, it is characterised in that also including spheroid, the diameter of the spheroid
For 1-2 times of the spacing hole depth；The spheroid is placed in the spacing hole, for test specimen random collision to be measured, with
Increase the randomness of test specimen motion to be measured.
6. wearability test equipment according to claim 5, it is characterised in that the material of the spheroid is marble, gold
Category or high polymer material.
7. the wearability test equipment according to Claims 2 or 3, it is characterised in that also including counter, the counter
It is arranged in the supporting plate, is electrically connected with inductor, is moved back and forth for recording the stopping means or the friction plate
Number.
A kind of 8. abrasion resistance test method using any wearability test equipment of claim 1-7, it is characterised in that bag
Include following steps：
S1, make test specimen to be measured in the surface of the friction plate and the spacing hole relatively described spacing hole and the friction plate with
Machine moves；
S2, record the stopping means or the reciprocating number of the friction plate；
S3, the abrasion condition on observation test block surface；
When abrasion occur first in S4, test block surface, stop test.
9. abrasion resistance test method according to claim 8, it is characterised in that the friction plate can be carried out as requested
Selection and replacing.
10. abrasion resistance test method according to claim 8, it is characterised in that the reciprocating number is more, surveys
The anti-wear performance of surface of test piece is better；It is conversely, poorer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710571611.5A CN107356468B (en) | 2017-07-13 | 2017-07-13 | A kind of wearability test device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710571611.5A CN107356468B (en) | 2017-07-13 | 2017-07-13 | A kind of wearability test device and method |
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| CN107356468A true CN107356468A (en) | 2017-11-17 |
| CN107356468B CN107356468B (en) | 2019-10-29 |
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| CN201710571611.5A Active CN107356468B (en) | 2017-07-13 | 2017-07-13 | A kind of wearability test device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900977A (en) * | 2017-12-08 | 2019-06-18 | 鸿准精密模具（昆山）有限公司 | The test method in touch screen service life |
| CN110398432A (en) * | 2019-07-29 | 2019-11-01 | 江西小辣椒通讯技术有限责任公司 | It is a kind of for detecting the device of the wear-resisting property of cell phone rear cover |
| CN112067484A (en) * | 2020-09-10 | 2020-12-11 | 合肥普和普耐磨材料技术有限公司 | Rapid testing device and testing method for wear resistance of plastic product |
| CN112213222A (en) * | 2020-10-23 | 2021-01-12 | 湖北中烟工业有限责任公司 | Cigarette case wear resistance testing device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5557039A (en) * | 1994-06-02 | 1996-09-17 | University Of Georgia Research Foundation, Inc. | Materials evaluator |
| WO2002004923A2 (en) * | 2000-07-07 | 2002-01-17 | Genencor International, Inc. | Repeated impact apparatus and method for characterizing granule strength |
| CN2650117Y (en) * | 2003-09-18 | 2004-10-20 | 佛山塑料集团股份有限公司 | Plastic film wear-resistance measuring device |
| JP2009198276A (en) * | 2008-02-21 | 2009-09-03 | Bridgestone Corp | Rubber testing machine |
| CN201689025U (en) * | 2010-05-10 | 2010-12-29 | 深圳市南和华毅塑胶制品有限公司 | Finger simulation test device |
| JP2011158448A (en) * | 2010-02-04 | 2011-08-18 | Bridgestone Corp | Rubber tester |
| CN202256084U (en) * | 2011-10-24 | 2012-05-30 | 温州意华通讯接插件有限公司 | Abrasion resistance tester for surfaces of electroplated layers |
| CN102621019A (en) * | 2011-01-30 | 2012-08-01 | 纬创资通股份有限公司 | Clamping fixture, friction testing device possessing the same, and friction testing method |
| CN102998103A (en) * | 2012-08-20 | 2013-03-27 | 昆山洺九机电有限公司 | Lift tester for laptop feet |
| CN203941070U (en) * | 2014-06-13 | 2014-11-12 | 永康市鸿基工贸有限公司 | Bowl coating abrasion test equipment |
| CN203981520U (en) * | 2014-07-24 | 2014-12-03 | 安徽省宁国诚信耐磨材料有限公司 | A kind of wear-resistant ball anti-wear performance detects machine |
| CN106501113A (en) * | 2016-11-03 | 2017-03-15 | 北京工商大学 | The equipment of fretting wear between a kind of test food machinery part and processed food |
| CN206258305U (en) * | 2016-11-18 | 2017-06-16 | 盐城工学院 | Detection self-stopping gear and cloth abrasion system safety testing device |
-
2017
- 2017-07-13 CN CN201710571611.5A patent/CN107356468B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5557039A (en) * | 1994-06-02 | 1996-09-17 | University Of Georgia Research Foundation, Inc. | Materials evaluator |
| WO2002004923A2 (en) * | 2000-07-07 | 2002-01-17 | Genencor International, Inc. | Repeated impact apparatus and method for characterizing granule strength |
| CN2650117Y (en) * | 2003-09-18 | 2004-10-20 | 佛山塑料集团股份有限公司 | Plastic film wear-resistance measuring device |
| JP2009198276A (en) * | 2008-02-21 | 2009-09-03 | Bridgestone Corp | Rubber testing machine |
| JP2011158448A (en) * | 2010-02-04 | 2011-08-18 | Bridgestone Corp | Rubber tester |
| CN201689025U (en) * | 2010-05-10 | 2010-12-29 | 深圳市南和华毅塑胶制品有限公司 | Finger simulation test device |
| CN102621019A (en) * | 2011-01-30 | 2012-08-01 | 纬创资通股份有限公司 | Clamping fixture, friction testing device possessing the same, and friction testing method |
| CN202256084U (en) * | 2011-10-24 | 2012-05-30 | 温州意华通讯接插件有限公司 | Abrasion resistance tester for surfaces of electroplated layers |
| CN102998103A (en) * | 2012-08-20 | 2013-03-27 | 昆山洺九机电有限公司 | Lift tester for laptop feet |
| CN203941070U (en) * | 2014-06-13 | 2014-11-12 | 永康市鸿基工贸有限公司 | Bowl coating abrasion test equipment |
| CN203981520U (en) * | 2014-07-24 | 2014-12-03 | 安徽省宁国诚信耐磨材料有限公司 | A kind of wear-resistant ball anti-wear performance detects machine |
| CN106501113A (en) * | 2016-11-03 | 2017-03-15 | 北京工商大学 | The equipment of fretting wear between a kind of test food machinery part and processed food |
| CN206258305U (en) * | 2016-11-18 | 2017-06-16 | 盐城工学院 | Detection self-stopping gear and cloth abrasion system safety testing device |
Non-Patent Citations (1)
| Title |
|---|
| 天恰: "《纺织品检验》", 30 June 2006 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900977A (en) * | 2017-12-08 | 2019-06-18 | 鸿准精密模具（昆山）有限公司 | The test method in touch screen service life |
| CN110398432A (en) * | 2019-07-29 | 2019-11-01 | 江西小辣椒通讯技术有限责任公司 | It is a kind of for detecting the device of the wear-resisting property of cell phone rear cover |
| CN112067484A (en) * | 2020-09-10 | 2020-12-11 | 合肥普和普耐磨材料技术有限公司 | Rapid testing device and testing method for wear resistance of plastic product |
| CN112213222A (en) * | 2020-10-23 | 2021-01-12 | 湖北中烟工业有限责任公司 | Cigarette case wear resistance testing device |
| CN112213222B (en) * | 2020-10-23 | 2023-10-24 | 湖北中烟工业有限责任公司 | Cigarette case wear-resisting testing arrangement |
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|---|---|
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