CN105058250B - A kind of conductive flexible grinding tool and preparation method thereof - Google Patents
A kind of conductive flexible grinding tool and preparation method thereof Download PDFInfo
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- CN105058250B CN105058250B CN201510385289.8A CN201510385289A CN105058250B CN 105058250 B CN105058250 B CN 105058250B CN 201510385289 A CN201510385289 A CN 201510385289A CN 105058250 B CN105058250 B CN 105058250B
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Abstract
The invention discloses a kind of conductive flexible grinding tool and its manufacturing methods, with abrasive material, organic bond, conductive filler, crosslinking agent, catalyst etc. for main component.The present invention also provides a kind of methods for preparing the above grinding tool.Compared with prior art, the present invention can be realized the rapid shaping of grinding tool, has good craftsmanship, takes into account the mechanical performance of grinding tool while having good conductive property.Suitable for complex-curved electrolysis Compound Machining, machining accuracy, surface quality and processing efficiency are improved.
Description
Technical field
The present invention relates to electrobrightening Compound Machining field, in particular to a kind of conductive flexible grinding tool and preparation method thereof.
Background technique
With the development of society, the manufacturing fields such as aerospace, precision instrumentation and automobile, precise treatment, the collection of product
It is higher and higher at change and high-performance, the degree of high reliability.A large amount of special shape has all been frequently occurred in corresponding part
A series of typical cases such as micro-structure, including precise fine hole, Fine and Deep Hole, type groove, surface of friction pair dimple hole, surface texture groove are micro-
Fine texture.And the material requirements of these microstructures have specific characteristics can: the performances such as high temperature resistant, high tenacity, high intensity, antifatigue
Alloy material.In addition, for complicated curved surface such as mold cavity, traditional finishing Precision Machining is not only difficult to realize surface
Quality and required precision, and the requirement to system of processing is very high, and it is very low for underhand polish polishing efficiency.
It is electrolysed composite polishing technology, make full use of electrochemical corrosion anode material and the mechanical grinding of abrasive material is combined to make
With realization is some to be unable to reach desired effect with machining process.Compared with single Electrolyzed Processing and mechanical grinding, no
It is only able to achieve better machining accuracy and surface roughness, and is had higher efficiency and processing stability.It is effective comprehensive
The advantages of two kinds of single processing.Now the problem is that: since the structure processed is curved surface or labyrinth, preparation
It is difficult, at high cost to form cathode cutter technique.
In conclusion needing to find a kind of uniform processing effect for both having adapted to each radius of curvature of free form surface, Yi Jirong
Easily molded cathode material.Organic rubber bonding agent has good elasticity and toughness, the bonding agent phase with traditional fixation abrasive grain
Than can be realized complex-curved copying, and reduce the scratch on surface to improve surface roughness and precision.Rubber
Itself it is good insulating body, the formation of grinding tool inner conductive grid is realized by filling conducting medium stainless steel fibre, thus
It can be used as the cathode of Electrolyzed Processing.
Summary of the invention
To solve the above-mentioned problems of the prior art, the purpose of the present invention is to provide a kind of novel conductive flexible mills
Tool, to solve the above problem of the existing technology.Grinding tool in the present invention is using gum cement, so that grinding tool has
Certain flexibility；It joined conductive fiber in grinding tool simultaneously, allow to the cathode material as Electrolyzed Processing.Therefore, it is protecting
Under the advantage for demonstrate,proving Electrolyzed Processing, the quality of surface to be machined and the efficiency of material removal have been improved.
It is a further object to provide a kind of methods for preparing the grinding tool.
In order to achieve the above objectives, the technical solution of the present invention is as follows:
A kind of conductive flexible grinding tool, composed of the following components: abrasive material, conductive filler, bonding agent, curing agent, catalyst,
Be characterized in that: the bonding agent is that molecular weight is greater than 104High-molecular organic material, and have after conductive filler curing molding
Good flexible, electric conductivity and mechanical strength；
The bonding agent is any one of inorganic bonding agent, metallic bond, organic bond；The conductive filler is
Powdery type conductive filler or fiber-like conductive filler.
Further, the inorganic bonding agent is vitrified bond；Metallic bond is plating metal bonding agent；Organic knot
Mixture uses resinoid bond or gum cement；The powdery type conductive filler is conductive carbon powder, carbon nanotube, graphite or gold
Belong to powder, the fiber-like conductive filler is metallic fiber, carbon fiber, inorganic chemical fibres.
Further, the bonding agent is gum cement, and the conductive filler is metallic fiber.
Further, the bonding agent and conductive filler are conductive polymer material, and fiber conductive filler is using diameter
12 μm, length is the conductive fiber of 5mm, and draw ratio is convenient for forming conductive grid, and the smaller property for influencing bonding agent itself for 417
Can, while the intensity of grinding tool can be enhanced.
Further, the grinding tool is using gum cement, and abrasive material is Brown Alundum and white fused alumina, granularity be F80~
F120。
Further, the abrasive material that the grinding tool uses is white fused alumina, granularity F120.
On the basis of rubber, other ingredients are added grinding tool formula by the mass ratio for accounting for gum cement.
Further, the conductive flexible grinding tool, is made of the component of following parts by weight:
Wherein, coupling agent is used to increase the compatibility of abrasive material and bonding agent, improves grinding tool to the holding power of abrasive material；In addition even
Connection agent is also used to prepare coupling agent solution, and solution composition is coupling agent, dehydrated alcohol and distilled water, and its role is to impregnate metal
Fiber, to improve the bond strength with bonding agent, abrasive material.
The method for preparing conductive flexible grinding tool, comprising the following steps:
1) weighing: with gum cement for 100 parts, abrasive material is weighed in proportion, is mixed with bonding agent；
2) silicone oil is handled: silicone oil and coupling agent are weighed in proportion, are added in above-mentioned colloid admixture, it is appropriate to stir, and it stands
For a period of time；
3) fiber treatment: preparing coupling agent solution, weigh fiber in proportion and be put into solution, and carry out fiber dispersion, point
It dissipates uniformly to be placed in baking oven and dry；
4) it stirs: dispersion fiber being put into the colloid in step 2, is stirred until homogeneous；
5) reverse mould: mold is using preceding smearing release agent, reverse mould；
6) crosslinking curing: colloid in step 4 is proportionally added into crosslinking agent and catalyst after mixing, stirs 2 points
Colloid admixture is placed in molding die by clock or so；
7) it demoulds: after normal temperature cure for a period of time, demoulding.
Compared with the existing technology, the invention has the benefit that
The present invention can be realized the rapid shaping of grinding tool, has good craftsmanship, takes into account the mechanical performance of grinding tool simultaneously
It has good conductive property.Suitable for complex-curved electrolysis Compound Machining, machining accuracy, surface quality and processing are improved
Efficiency.
Detailed description of the invention
Fig. 1 is molding die schematic diagram；
Fig. 2 is grinding tool conductive grid microgram.
Wherein, 1- knife bar, 2- briquetting, 3- type chamber, 4- shaping base.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings and detailed description:
A kind of conductive flexible grinding tool, the grinding tool is using abrasive material, filler, bonding agent as main component, wherein bonding agent is organic
Rubber, filler are conducting medium, so that being formed has the multifunctional macromolecule grinding tool for leading performance.
Above-mentioned organic rubber bonding agent uses silicon rubber, relevant parameter are as follows:
Appearance: colorless transparent viscous liquid；
Viscosity (25 DEG C, cs): 1500~1500000；
Volatility (150 DEG C × 3h, %) :≤2；
The surface cure time (h) :≤2.
After solidification, there is good high temperature resistant cryogenic property, be a big advantage compared with the heat resistance of polyurethane is very poor,
Compared with the micro-elasticity of resin, silicon rubber has good elasticity.
Conductive filler is stainless steel fibre, is had the advantage that compared with other conducting mediums
There is biggish major diameter ratio, so that mill has good conductive property；
With good processing performance, do not allow to be also easy to produce surface oxidation in high temperature process；
Smaller, such as molding, elasticity is influenced on the fundamental characteristics of bonding agent；
With preferable metallic luster；
In one embodiment specifically preferred according to the invention, the grinding tool is made of following components in percentage by weight:
Wherein, coupling agent is used to increase the compatibility of abrasive material and bonding agent, improves grinding tool to the holding power of abrasive material；Certain ratio
The coupling agent solution of example improves the bond strength with bonding agent, abrasive material for impregnating metallic fiber.
As shown in Figure 1, the present invention also provides a kind of molding dies for preparing the above grinding tool.
Mold is made of following components:
Type chamber 3；
Shaping base 4；
Knife bar 1；
Briquetting 2.
Shaping base 4 can be processed into different shape such as hemispherical, plane to adapt to different process requirements.
1 one end of knife bar is connect with machine tool chuck, and the other end is connected with grinding tool.
To prevent grinding tool and knife bar 1 from relative motion occurs, stairstepping is processed into knife bar end, and four are outputed on multi-diameter shaft
A uniformly distributed square groove, so as to prevent knife bar and grinding tool from radial rotating and axial movement occurs.
The effect of briquetting 2 is to apply pressure and pressure maintaining during abrasive tool moulding.
The present invention also provides the main indicators and corresponding detection method of detection conductive flexible grinding tool.
The resistivity of grinding tool；
Grade of abrasive tool；
The elasticity modulus of grinding tool；
The intensity of grinding tool；
Grinding tool bonding streng；
Experiment shows resistivity 102~104The requirement of Electrolyzed Processing can be met within the scope of Ω cm.For this purpose, right
Grinding tool adds the stainless steel fibre of different specific weight, to obtain required electric conductivity.The ratio range of stainless steel fibre is 10%
~50%, experiment comparison is carried out to 10%, 20%, 30%, 40%, 50% respectively.In the identical situation of other conditions respectively
Test the volume resistivity ρ of grinding toolv, calculation formula ρv=Rv(S/L).Resistance measurement with voltammetry method: 12V DC power supply, 50K
Ω resistance, digital multimeter VC890C+ measurement grinding tool and resistance both end voltage, can be calculated, actually acquire resistivity 102
~104The range is even lower than in Ω cm.As shown in Fig. 2, micrometer microscope observes grinding tool inner conductive grid protocol situation
And the degree of impairment of stainless steel, the integrity and dispersibility of Stainless Steel fiber can guarantee the stability of Electrolyzed Processing.Experiment
The result shows that being influenced very with preferable electric conductivity when stainless steel fibre specific gravity is 20% and on performance of gum cement itself
It is small.Grinding tool to material remove rate and and curved surface profiling ability be largely dependent on the elasticity of grinding tool, therefore its elasticity modulus
Calculating it is significant.It is calculated according to formula, analysis stress-strain diagram can be found out.Since conductive flexible grinding tool has certain bullet
Property, hardness is using Shore durometer measurement, and specific method is referring to " GBT6031-1998 vulcanized rubber or thermoplastic elastomer hardness
Measurement ".In addition, the intensity and abrasive grain holding power for grinding tool then polish test by lathe to verify.Adjust different range
Lathe revolving speed and the amount of feeding of Z-direction observe the intensity and grinding performance of grinding tool.
The present invention also provides a kind of methods for preparing the above grinding tool comprising following steps:
1) weighing: with gum cement for 100 parts, abrasive material is weighed in proportion, is mixed with bonding agent；
2) silicone oil is handled: silicone oil and coupling agent are weighed in proportion, are added in above-mentioned colloid admixture, it is appropriate to stir, and it stands
For a period of time；
3) fiber treatment: preparing coupling agent solution, weigh fiber in proportion and be put into solution, and carry out fiber dispersion, point
It dissipates uniformly to be placed in baking oven and dry；
4) it stirs: dispersion fiber being put into the colloid in step 2, is stirred until homogeneous；
5) reverse mould: mold is using preceding smearing release agent, reverse mould；
6) crosslinking curing: colloid in step 4 is proportionally added into crosslinking agent and catalyst after mixing, stirs 2 points
Colloid admixture is placed in molding die by clock or so；
7) it demoulds: after normal temperature cure 2 hours, demoulding.
Below by taking silicon rubber binding agent grinder as an example, technical solution of the present invention is described in further detail, but embodiment
The understanding and reference of only easy to read person, does not make any type of limitation to the present invention, the present disclosure applies equally to other
Same type of grinding tool.
Embodiment 1
Prepare each raw material for preparing grinding tool according to formula as below:
Specific preparation the following steps are included:
1) weighing: with gum cement for 100 parts, abrasive material is weighed in proportion, is mixed with bonding agent；
2) silicone oil is handled: silicone oil and coupling agent are weighed in proportion, are added in above-mentioned colloid admixture, it is appropriate to stir, and it stands
For a period of time；
3) fiber treatment: preparing coupling agent solution, weigh fiber in proportion and be put into solution, and carry out fiber dispersion, point
It dissipates uniformly to be placed in baking oven and dry；
4) it stirs: dispersion fiber being put into the colloid in step 2, is stirred until homogeneous；
5) reverse mould: mold is using preceding smearing release agent, reverse mould；
6) crosslinking curing: colloid in step 4 is proportionally added into crosslinking agent and catalyst after mixing, stirs 2 points
Colloid admixture is placed in molding die by clock or so；
7) it demoulds: after normal temperature cure 2 hours, demoulding.
Embodiment 2
Prepare each raw material for preparing grinding tool according to formula as below:
Specific preparation step is the same as embodiment 1.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention
Protection scope should be determined by the scope of protection defined in the claims.
Claims (3)
1. a kind of conductive flexible grinding tool, including following components: abrasive material, conductive filler, bonding agent, curing agent, catalyst, feature
Be: the curing agent is that molecular weight is greater than 104High-molecular organic material, it is good with having after conductive filler curing molding
Flexibility, electric conductivity and mechanical strength；The bonding agent is gum cement；The conductive filler is that fiber-like conduction is filled out
Expect, fiber conductive filler is 12 μm using diameter, and length is the conductive fiber of 5mm, and draw ratio is convenient for forming conductive mesh for 417
Lattice, and the smaller performance for influencing bonding agent itself, while the intensity of grinding tool can be enhanced, abrasive material is Brown Alundum and white fused alumina, grain
Degree is F80~F120.
2. the conductive flexible grinding tool according to claim 1, which is characterized in that be made of the component of following parts by weight:
100 parts of bonding agent；
5 parts of silicone oil；
50~60 parts of abrasive material；
1~3 part of catalyst；
6~20 parts of conductive filler；
5 parts of coupling agent；
5 parts of crosslinking agent；
Wherein, coupling agent is used to increase the compatibility of abrasive material and bonding agent, improves grinding tool to the holding power of abrasive material；In addition coupling agent
It is also used to prepare coupling agent solution, solution composition is coupling agent, dehydrated alcohol and distilled water, and its role is to impregnate metal fibre
Dimension, to improve the bond strength with bonding agent, abrasive material.
3. the method for preparing conductive flexible grinding tool described in claim 2, which comprises the following steps:
1) weighing: with gum cement for 100 parts, weighing abrasive material in proportion, mix with bonding agent, forms colloid admixture；
2) silicone oil is handled: silicone oil and coupling agent are weighed in proportion, are added in above-mentioned colloid admixture, it is appropriate to stir, and stand one section
Time；
3) fiber treatment: preparing coupling agent solution, weigh fiber in proportion and be put into solution, and carry out fiber dispersion, and dispersion is equal
Even be placed in baking oven is dried；
4) it stirs: dispersion fiber being put into the colloid in step 2, is stirred until homogeneous；
5) reverse mould: mold is using preceding smearing release agent, reverse mould；
6) crosslinking curing: the colloid in step 4 is proportionally added into crosslinking agent and catalyst after mixing, stirs 2 minutes,
Colloid admixture is placed in molding die；
7) it demoulds: after normal temperature cure for a period of time, demoulding.
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| US6191681B1 (en) * | 1997-07-21 | 2001-02-20 | General Electric Company | Current limiting device with electrically conductive composite and method of manufacturing the electrically conductive composite |
| US7618529B2 (en) * | 2004-05-25 | 2009-11-17 | Rohm And Haas Electronic Materials Cmp Holdings, Inc | Polishing pad for electrochemical mechanical polishing |
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Effective date of registration: 20230804 Address after: B205, No.179 Chezhan Road, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province, 325600 Patentee after: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd. Address before: 321004 No. 688 Yingbin Road, Zhejiang, Jinhua Patentee before: ZHEJIANG NORMAL University |
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Effective date of registration: 20230826 Address after: 325600 Liu Shi Zhen Zhang Qu Cun, Leqing City, Wenzhou City, Zhejiang Province Patentee after: CHUSUL ELECTRIC Co.,Ltd. Address before: B205, No.179 Chezhan Road, Liushi Town, Leqing City, Wenzhou City, Zhejiang Province, 325600 Patentee before: Zhipu Qiwang (Wenzhou) Electric Power Technology Research Institute Co.,Ltd. |
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