CN107634424A - A kind of brush with abrasive structure - Google Patents
A kind of brush with abrasive structure Download PDFInfo
- Publication number
- CN107634424A CN107634424A CN201610565850.5A CN201610565850A CN107634424A CN 107634424 A CN107634424 A CN 107634424A CN 201610565850 A CN201610565850 A CN 201610565850A CN 107634424 A CN107634424 A CN 107634424A
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- brush
- suspension
- grinding
- waterglass
- conductive
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Abstract
The invention discloses a kind of brush with abrasive structure, the abrasive structure on the contact surface of suspension impregnation to brush by will be made, wherein the suspension includes：Fluent material comprising waterglass and granular solid material, by the way that the fluent material comprising waterglass and granular solid material are homogenously mixed together, suspension is made；Wherein, the solid material includes grinding-material and conductive material.The inventive method by grinding-material come increase dipping after brush contact susface anti-wear performance, electric conductivity is strengthened by conductive material, contact resistance rise when brush contacts with engine commutator after impregnating is avoided, the anti-wear performance and service life of brush are added on the premise of ensureing that properties of brush is unaffected.
Description
Technical field
The invention belongs to machine field, is related to a kind of brush, more particularly to a kind of brush with abrasive structure.
Background technology
Brush is to make sliding contact with motor movement part and form a kind of conductive component for the connection that is powered, as motor
In import and export the contact of electric current, be the important composition part of motor.Brush contact susface and commutator contact surface
The abundant degree of the electrical contact formed has a great influence to motor operation, and brush installs initial stage, it is necessary to when having one section
Between load pre-grinding could form preferably fully contact, therefore generally, motor needs after completing to assemble
Carry out preliminary pre-grinding and ensure that forming sufficient face between brush and commutator contacts.
Reason of both the having of insufficient contact surface, on the one hand it is brush radian face structure inclined in itself
Difference, it is on the other hand then the other defects such as out-of-flatness or the corrosion of commutator face structure.
In order to which the influence of the other defects such as the out-of-flatness of commutator face structure or corrosion is mitigated or eliminated, accelerate electricity
Brush the break-in between commutator, make to be more quickly formed between brush and commutator sufficient face contact, it is necessary to
A kind of abrasive structure is configured on the radian face of brush, the deviation or commutator in brush radian face are eliminated by the structure
The other defects such as the out-of-flatness or corrosion on surface, and then replace motor pre-grinding process.
Patent CN101931157A discloses a kind of carbon brush, and the carbon brush is configured with the contact surface of its brush holder
A kind of abrasive structure, there is the abrasive structure one kind to increase attached dose and a kind of abrasive grains, attached by that will increase first
Agent is adhered on the contact surface, then abrasive grains or the location structure with abrasive grains are adhered into the upper system of attached dose of increasing
The standby carbon brush.Therefore, attached dose of the increasing in the invention is double-layer structure with abrasive grains, and needs to glue respectively
It is attached on the contact surface of carbon brush.
The content of the invention
The purpose of the present invention is the problem of presence for prior art, there is provided a kind of brush with abrasive structure,
The abrasive structure be by by the contact surface of suspension impregnation to brush and be made.
Wherein, the suspension includes：
Fluent material comprising waterglass and granular solid material；
Wherein, by the way that the fluent material comprising waterglass and granular solid material are evenly mixed in into one
Rise, suspension is made.
Wherein, the percentage by weight that the waterglass accounts for the suspension is 50-80%.
Waterglass is liquid sodium silicate, is a kind of colorless and transparent thick liquid, modulus is in 3.10-3.40.
Wherein, the weight of the fluent material comprising waterglass and the granular solid material
For：5-8：2-5.
Particularly, the weight of the fluent material comprising waterglass and the granular solid material
Preferably：6-7：3-4.
Wherein, the solid material includes grinding-material and conductive material.
Particularly, the weight of the grinding-material and the conductive material is 2-7：4-8.
Especially, the weight of the grinding-material and the conductive material is preferably 3-5：5-7.
Wherein, the grinding-material includes the one or more in carborundum, quartz and aluminum oxide.
Particularly, the granule size of the grinding-material is 10-150 μm.
The carborundum is black gray expandable powder, and granularity is 200-300 mesh；Carborundum is hexagonal crystallographic texture material,
Stable chemical performance, thermal coefficient of expansion is small, has preferable anti-wear performance, the addition of carborundum, can increase
The anti-wear performance of suspension, and then increase the service life of carbon brush.
The quartz is off-white powder, has greasy luster, its hard wear resistant and chemical property stabilization；Quartz
Addition, the anti-wear performance of suspension can be increased, and then increase the service life of carbon brush.
The aluminum oxide is α-Al2O3, it is white powder, trigonal system structure, hardness is higher；Aluminum oxide
Add, the anti-wear performance of suspension can be increased, and then increase the service life of carbon brush.
Wherein, the conductive material includes one or more of in graphene, carbon fiber and conductive black.
Particularly, the granule size of the conductive material is about 5-100 μm.
The graphene is the highly conductive type powder of black, and size distribution D50≤20 μm, electric conductivity is excellent, easily
It is scattered.
The carbon fiber is carbon fiber powder, and phosphorus content ＞ 95%, granularity is 200-500 mesh, and electric conductivity is excellent
It is different, it is easily scattered.
The conductive black phosphorus content ＞ 98%, granularity are 300-1000 mesh, and its resistivity is low, and granularity is small,
Specific surface area is big, easily scattered.
Conductive material has preferable electric conductivity, contact resistance when will not cause the brush to be contacted with engine commutator
Rise, it is ensured that properties of brush is unaffected.
Wherein, by the way that the fluent material and solid material are homogenously mixed together, obtained suspension is described
Suspension impregnation forms abrasive structure on the contact surface of brush, disappeared by the structure on the contact surface of brush
The other defect such as the deviation of discharging brush contact surface or the out-of-flatness of commutator face or corrosion, and then replace motor pre-
Grinder sequence.
The advantages of the present invention are as follows：
The present invention is made outstanding by the way that the fluent material comprising waterglass and solid material are uniformly mixed
Supernatant liquid, then on suspension impregnation to brush contact susface, will make that there is abrasive structure on the contact surface of brush；Wherein
Solid material includes grinding-material and conductive material, by grinding-material come increase dipping after brush contact susface it is resistance to
Performance is ground, electric conductivity is strengthened by conductive material, avoids and is connect when brush contacts with engine commutator after impregnating
Resistance of getting an electric shock is raised, and the anti-wear performance of brush is added and using the longevity on the premise of ensureing that properties of brush is unaffected
Life；Waterglass in the present invention is fluent material, but it is solidified into after the contact surface of brush is impregnated into
For solid, the waterglass anti-wear performance after solidification is good, can increase the anti-wear performance of suspension, and it is as liquid
During body material, the solid material solubility property suspension can be made again, be then coated with the contact surface.This
Invention cost of material is cheap, and source is easy to get, and preparation method is simple.
Embodiment
The invention will now be further described with reference to specific embodiments, and advantages of the present invention and feature will be with
Description and it is apparent.But these embodiments are only exemplary, do not form any limit to the scope of the present invention
System.It will be understood by those skilled in the art that without departing from the spirit and scope of the invention can be to this hair
The details and form of bright technical scheme are modified or replaced, but these modifications and replacement each fall within the guarantor of the present invention
In the range of shield.
Embodiment 1
1st, stocked up according to following weight：
Grinding-material 2
Conductive material 4
Waterglass 24
2nd, above-mentioned raw materials are added in stainless steel, stir 15-30min, make it well mixed, be made outstanding
Supernatant liquid.
3rd, brush contact susface is impregnated into above-mentioned suspension, impregnation is carried out to brush contact susface, makes electricity
There is abrasive structure on the contact surface of brush.
Alternatively, the grinding-material in the present embodiment can be carborundum, quartz and aluminum oxide in one kind or
It is several；Conductive material can be one or more of in graphene, carbon fiber and conductive black.
Long duration test controller is loaded using FNC-5 types, in Positec WU715 angle grinder motors
On (230V/810W), the life-span is carried out respectively to the brush after dipping and untreated brush, spark situation is surveyed
Examination, result of the test are shown in Table 1.
Embodiment 2
For the present embodiment in addition to being stocked up according to following weight, remaining step is same as Example 1, wherein,
The weight of each raw material is：
Grinding-material 3
Conductive material 6
Waterglass 18
Alternatively, the grinding-material in the present embodiment can be carborundum, quartz and aluminum oxide in one kind or
It is several；Conductive material can be one or more of in graphene, carbon fiber and conductive black.
Long duration test controller is loaded using FNC-5 types, in Positec WU715 angle grinder motors
On (230V/810W), the life-span is carried out respectively to the brush after dipping and untreated brush, spark situation is surveyed
Examination, result of the test are shown in Table 1.
Embodiment 3
For the present embodiment in addition to being stocked up according to following weight, remaining step is same as Example 1, wherein,
The weight of each raw material is：
Grinding-material 5
Conductive material 7
Waterglass 21
Alternatively, the grinding-material in the present embodiment can be carborundum, quartz and aluminum oxide in one kind or
It is several；Conductive material can be one or more of in graphene, carbon fiber and conductive black.
Long duration test controller is loaded using FNC-5 types, in Positec WU715 angle grinder motors
On (230V/810W), the life-span is carried out respectively to the brush after dipping and untreated brush, spark situation is surveyed
Examination, result of the test are shown in Table 1.
Embodiment 4
For the present embodiment in addition to being stocked up according to following weight, remaining step is same as Example 1, wherein,
The weight of each raw material is：
Grinding-material 6
Conductive material 4.5
Waterglass 19.5
Alternatively, the grinding-material in the present embodiment can be carborundum, quartz and aluminum oxide in one kind or
It is several；Conductive material can be one or more of in graphene, carbon fiber and conductive black.
Long duration test controller is loaded using FNC-5 types, in Positec WU715 angle grinder motors
On (230V/810W), the life-span is carried out respectively to the brush after dipping and untreated brush, spark situation is surveyed
Examination, result of the test are shown in Table 1.
Embodiment 5
For the present embodiment in addition to being stocked up according to following weight, remaining step is same as Example 1, wherein,
The weight of each raw material is：
Grinding-material 7
Conductive material 8
Waterglass 15
Alternatively, the grinding-material in the present embodiment can be carborundum, quartz and aluminum oxide in one kind or
It is several；Conductive material can be one or more of in graphene, carbon fiber and conductive black.
Long duration test controller is loaded using FNC-5 types, in Positec WU715 angle grinder motors
On (230V/810W), the life-span is carried out respectively to the brush after dipping and untreated brush, spark situation is surveyed
Examination, result of the test are shown in Table 1.
1 wear rate of table/spark-testing result
Claims (7)
1. a kind of brush with abrasive structure, it is characterised in that the abrasive structure is by by suspension
It is impregnated on the contact surface of brush and is made, wherein the suspension includes：
Fluent material comprising waterglass and granular solid material；
Wherein, by the way that the fluent material comprising waterglass and granular solid material are evenly mixed in into one
Rise, suspension is made.
2. brush according to claim 1, it is characterised in that the waterglass accounts for the suspension
Percentage by weight is 50-80%.
3. brush according to claim 1, it is characterised in that the fluent material for including waterglass
Weight with the granular solid material is 5-8:2-5.
4. brush according to claim 1, it is characterised in that the solid material includes grinding-material
And conductive material.
5. brush according to claim 4, it is characterised in that the grinding-material and conductive material
Weight is 2-7：4-8.
6. brush according to claim 5, it is characterised in that the grinding-material include carborundum,
One or more in quartz and aluminum oxide.
7. brush according to claim 5, it is characterised in that the conductive material include graphene,
It is one or more of in carbon fiber and conductive black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565850.5A CN107634424A (en) | 2016-07-19 | 2016-07-19 | A kind of brush with abrasive structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565850.5A CN107634424A (en) | 2016-07-19 | 2016-07-19 | A kind of brush with abrasive structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107634424A true CN107634424A (en) | 2018-01-26 |
Family
ID=61112845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610565850.5A Pending CN107634424A (en) | 2016-07-19 | 2016-07-19 | A kind of brush with abrasive structure |
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| CN (1) | CN107634424A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2734749A1 (en) * | 1976-08-05 | 1978-02-09 | Gen Electric | Brush to round off a commutator |
| CN1096313A (en) * | 1993-06-08 | 1994-12-14 | 庞敏慧 | Efficient polishing grinding stone and preparation technology thereof |
| CN1639925A (en) * | 2002-03-04 | 2005-07-13 | 申克碳化技术股份有限公司 | Method for production of a multi-layer carbon brush |
| CN1897418A (en) * | 2005-07-15 | 2007-01-17 | 爱信精机株式会社 | Metal-graphite brush |
| WO2008040684A1 (en) * | 2006-10-02 | 2008-04-10 | Robert Bosch Gmbh | Electric machine |
| CN101237108A (en) * | 2007-02-09 | 2008-08-06 | 黄继林 | Arc extinction brush and method for eliminating electric arc of power generator with this arc-extinction brush |
| CN101320876A (en) * | 2007-06-05 | 2008-12-10 | 格哈特精密压缩技术有限责任公司 | Electirc sliding contact and method for processing the same |
| CN101931157A (en) * | 2009-06-25 | 2010-12-29 | 申克碳化技术股份有限公司 | Carbon brush |
-
2016
- 2016-07-19 CN CN201610565850.5A patent/CN107634424A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2734749A1 (en) * | 1976-08-05 | 1978-02-09 | Gen Electric | Brush to round off a commutator |
| CN1096313A (en) * | 1993-06-08 | 1994-12-14 | 庞敏慧 | Efficient polishing grinding stone and preparation technology thereof |
| CN1639925A (en) * | 2002-03-04 | 2005-07-13 | 申克碳化技术股份有限公司 | Method for production of a multi-layer carbon brush |
| CN1897418A (en) * | 2005-07-15 | 2007-01-17 | 爱信精机株式会社 | Metal-graphite brush |
| WO2008040684A1 (en) * | 2006-10-02 | 2008-04-10 | Robert Bosch Gmbh | Electric machine |
| CN101237108A (en) * | 2007-02-09 | 2008-08-06 | 黄继林 | Arc extinction brush and method for eliminating electric arc of power generator with this arc-extinction brush |
| CN101320876A (en) * | 2007-06-05 | 2008-12-10 | 格哈特精密压缩技术有限责任公司 | Electirc sliding contact and method for processing the same |
| CN101931157A (en) * | 2009-06-25 | 2010-12-29 | 申克碳化技术股份有限公司 | Carbon brush |
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Application publication date: 20180126 |
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