CN111015532A - Polishing grinding wheel and manufacturing method thereof - Google Patents
Polishing grinding wheel and manufacturing method thereof Download PDFInfo
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- CN111015532A CN111015532A CN201911415089.7A CN201911415089A CN111015532A CN 111015532 A CN111015532 A CN 111015532A CN 201911415089 A CN201911415089 A CN 201911415089A CN 111015532 A CN111015532 A CN 111015532A
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- parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a polishing grinding wheel and a manufacturing method thereof, wherein the polishing grinding wheel comprises a grinding layer, and the raw materials of the grinding layer comprise, by weight, 34-50 parts of phenolic resin powder, 6-20 parts of diamond powder, 20-30 parts of microcrystalline corundum powder and 13-25 parts of sodium sulfate powder. The manufacturing method comprises a material mixing step, wherein the raw materials are placed in a three-dimensional mixer to be mixed for 1.5 to 2.5 hours to obtain a mixture; and a hot pressing step, namely placing the mixture in a mold, pressing the mixture by the hot press at 170 ℃, and preserving heat, wherein the mixture is placed in the mold and preserved heat for 5-7 hours to obtain a green body. After the proportion of the diamond and the microcrystalline corundum in parts by weight is adjusted, the polishing effect can be effectively improved and the polished surface can be protected when the components and the parts by weight are within the range, and the magnetic material workpiece meets the requirement of inductance consistency.
Description
Technical Field
The invention relates to the technical field of grinding tools, in particular to a polishing grinding wheel and a manufacturing method thereof.
Background
The grinding wheel is the most important grinding tool in grinding processing, and different raw material components and different manufacturing processes make the characteristics of various grinding wheels have larger difference. The prior grinding wheel has a resin bond grinding layer, has the characteristics of small grinding force, good self-sharpening property, less heat productivity and the like, and is mainly used for polishing the surface of a workpiece.
The existing grinding wheel has the problem that certain workpieces have certain physical properties, such as magnetic material workpieces which have inductance consistency requirements, so that the magnetic material workpieces have higher requirements for surface polishing.
Disclosure of Invention
A first object of the present invention is to provide a polishing wheel which improves polishing effect.
A second object of the present invention is to provide a method of manufacturing a buff wheel that improves the buffing effect.
The polishing grinding wheel provided by the first object of the invention comprises a grinding layer, and the raw materials of the grinding layer comprise, by weight, 34-50 parts of phenolic resin powder, 6-20 parts of diamond powder, 20-30 parts of microcrystalline corundum powder and 13-25 parts of sodium sulfate powder.
According to the scheme, the diamond has enough strength and hardness, the microcrystalline corundum material has the characteristics of good toughness, high strength and good self-sharpening performance, and in the grinding process, the polishing grinding wheel takes the diamond as a main grinding material and the microcrystalline corundum as an auxiliary grinding material; the components and the weight part ranges of the components are determined by a large number of experiments, and after the weight part proportion between the diamond and the microcrystalline corundum is adjusted, the polishing effect can be effectively improved and the polished surface can be protected when the components and the weight part ranges are within the range, and the magnetic material workpiece meets the requirement of inductance consistency.
The further scheme is that the raw materials of the grinding layer comprise, by weight, 42-46 parts of phenolic resin powder, 7-12 parts of diamond powder, 28-30 parts of microcrystalline corundum powder and 14-19 parts of sodium sulfate powder.
According to a further scheme, the raw materials of the grinding layer comprise, by weight, 42-44 parts of phenolic resin powder, 10-12 parts of diamond powder, 30 parts of microcrystalline corundum powder and 14-18 parts of sodium sulfate powder.
From the above, it is confirmed through experiments that the service life of the grinding wheel is further improved within the range of the components and the weight parts thereof on the premise of maintaining the requirement of satisfying the polishing.
In another further embodiment, the diamond powder has a particle size of 1200 mesh.
In another further scheme, the grain size of the microcrystalline corundum powder is 1000 meshes.
Therefore, the diamond powder and the microcrystalline corundum powder with the granularity can better ensure the surface grains of the magnetic material, and further ensure that the magnetic material workpiece meets the requirement of inductance consistency.
In another further proposal, the hardness of the grinding layer is between HRF65 and HRF 75.
According to a further scheme, the polishing grinding wheel further comprises a disc base, the grinding layer comprises a first grinding ring, and the first grinding ring is fixed on the surface side of the disc base.
The grinding layer further comprises a second grinding ring, and the second grinding ring is fixed on the surface side of the disc base; the second grinding ring is located on the inner periphery of the first grinding ring.
In a further aspect, an annular groove is formed between the first grinding ring and the second grinding ring.
From the above, this setting is outside guaranteeing grinding area, and the annular groove forms heat dissipation and chip removal space simultaneously, improves the durability of first grinding ring and second grinding ring.
The first object of the present invention is to provide a method for manufacturing a whetstone, which is used for manufacturing the whetstone; the manufacturing method comprises a material mixing step, wherein the raw materials are placed in a three-dimensional mixer to be mixed for 1.5 to 2.5 hours to obtain a mixture; and a hot pressing step, namely placing the mixture in a mold, pressing the mixture by the hot press at 170 ℃, and preserving heat, wherein the mixture is placed in the mold and preserved heat for 5-7 hours to obtain a green body.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of a buffing wheel of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 is a cross-sectional view of an embodiment of a buffing wheel of the present invention. The polishing grinding wheel provided by the invention comprises a disc base 1 made of metal aluminum and a grinding layer fixedly arranged on the axial end face of the disc base 1, wherein the grinding layer comprises a first grinding ring 2 and a second grinding ring 3, the second grinding ring 3 is positioned on the inner periphery of the first grinding ring 2, an annular groove 4 is formed between the first grinding ring 2 and the second grinding ring 3, the widths of the first grinding ring 2 and the second grinding ring 3 are both 5 mm, and the axial heights of the first grinding ring 2 and the second grinding ring 3 are both 10 mm.
The manufacturing method of the polishing grinding wheel comprises a preparation method of a grinding layer, wherein the preparation method of the grinding layer comprises a material mixing step, a hot pressing step, a heat preservation step, an assembling step and a finishing step which are sequentially carried out.
Mixing: weighing phenolic resin powder, diamond powder, microcrystalline corundum powder and sodium sulfate powder according to the specification and the weight parts in the following table 1, and placing the materials into a three-dimensional mixer to mix for 2 hours to obtain a mixture.
Hot pressing: and placing the mixture obtained in the mixing step into a die, and pressing by a hot press at 170 ℃.
A heat preservation step: and (4) preserving the heat of the mixture after hot pressing for 5-7 hours at 170 ℃ in a hot press, and demoulding to obtain a blank.
Assembling: the blank is bonded to the axial end face of the disc base 1.
Finishing: and finishing and grinding the axial end face of the grinding layer to obtain a grinding face, namely, carrying out dynamic balance test on the grinding face.
The hardness of the prepared grinding layer is HRF 65-HRF 75.
TABLE 1 grinding layer composition, content and test results
The polishing service life of the polishing grinding wheel and the polishing effect of the surface of the magnetic material workpiece are tested:
the surfaces of the magnetic material workpieces were polished with a polishing grinding wheel prepared from the raw materials of the components and contents of the respective examples in table 1, and the number of the magnetic material workpieces per disc was 5000.
Test results show that when the raw materials of the grinding layer comprise 38 to 46 parts of phenolic resin powder, 7 to 18 parts of diamond powder, 20 to 30 parts of microcrystalline corundum powder and 14 to 24 parts of sodium sulfate powder, no obvious grinding mark exists on the surface of the polished magnetic material, and the inductance consistency of the magnetic material is good; and the polishing grinding wheels can polish workpieces with more than 500 disks of magnetic materials.
The test result shows that when the raw materials of the grinding layer comprise 42 to 44 parts of phenolic resin powder, 10 to 12 parts of diamond powder, 30 parts of microcrystalline corundum powder and 14 to 18 parts of sodium sulfate powder, the polishing grinding wheel can polish a workpiece made of magnetic materials with more than 600 discs, and the service life of the polishing grinding wheel can be further prolonged.
According to the test result, after the proportion of the diamond to the microcrystalline corundum is adjusted, the polishing effect can be effectively improved and the polished surface can be protected when the proportion of the diamond to the microcrystalline corundum is within the range of the components and the parts by weight, and the magnetic material workpiece meets the requirement of inductance consistency.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.
Claims (10)
1. A polishing grinding wheel, comprising a grinding layer, characterized in that:
the grinding layer comprises, by weight, 34-50 parts of phenolic resin powder, 6-20 parts of diamond powder, 20-30 parts of microcrystalline corundum powder and 13-25 parts of sodium sulfate powder.
2. The buffing wheel of claim 1 wherein:
the grinding layer comprises, by weight, 42-46 parts of phenolic resin powder, 7-12 parts of diamond powder, 28-30 parts of microcrystalline corundum powder and 14-19 parts of sodium sulfate powder.
3. The buffing wheel of claim 2 wherein:
the grinding layer comprises, by weight, 42-44 parts of phenolic resin powder, 10-12 parts of diamond powder, 30 parts of microcrystalline corundum powder and 14-18 parts of sodium sulfate powder.
4. A buffing wheel according to any one of claims 1 to 3, wherein:
the diamond powder has a particle size of 1200 meshes.
5. A buffing wheel according to any one of claims 1 to 3, wherein:
the grain size of the microcrystalline corundum powder is 1000 meshes.
6. A buffing wheel according to any one of claims 1 to 3, wherein:
the hardness of the grinding layer is HRF 65-HRF 75.
7. A buffing wheel according to any one of claims 1 to 3, wherein:
the polishing grinding wheel further comprises a disc base, the grinding layer comprises a first grinding ring, and the first grinding ring is fixed on the surface side of the disc base.
8. The buffing wheel of claim 7 wherein:
the grinding layer further comprises a second grinding ring, and the second grinding ring is fixed on the surface side of the disc base;
the second grinding ring is located at an inner periphery of the first grinding ring.
9. The buffing wheel of claim 8 wherein:
an annular groove is formed between the first grinding ring and the second grinding ring.
10. A method of manufacturing a buff wheel for use in manufacturing a buff wheel according to any one of claims 1 to 9;
the manufacturing method comprises the following steps:
a material mixing step, namely placing the raw materials into a three-dimensional mixer to be mixed for 1.5 to 2.5 hours to obtain a mixture;
a hot pressing step, namely placing the mixture in a mould, and pressing the mixture by a hot press at 170 ℃;
and a heat preservation step, namely placing the mixture in the mold, and preserving heat for 5-7 hours to obtain a blank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415089.7A CN111015532A (en) | 2019-12-31 | 2019-12-31 | Polishing grinding wheel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415089.7A CN111015532A (en) | 2019-12-31 | 2019-12-31 | Polishing grinding wheel and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN111015532A true CN111015532A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911415089.7A Pending CN111015532A (en) | 2019-12-31 | 2019-12-31 | Polishing grinding wheel and manufacturing method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6150772A (en) * | 1984-08-21 | 1986-03-13 | Goei Seisakusho:Kk | Polishing wheel |
| CN205271770U (en) * | 2015-12-15 | 2016-06-01 | 珠海市巨海科技有限公司 | Dicyclo resin bond diamond grinding wheel |
| CN106826587A (en) * | 2015-12-03 | 2017-06-13 | 台山市兰宝磨具有限公司 | A kind of skive and preparation method thereof |
| CN109333389A (en) * | 2018-12-04 | 2019-02-15 | 徐州艾佳机器人科技有限公司 | A kind of high-precision resin wheel and its processing technology |
| CN110303437A (en) * | 2019-06-17 | 2019-10-08 | 郑州磨料磨具磨削研究所有限公司 | A kind of glass-cutting resin wheel and preparation method thereof |
-
2019
- 2019-12-31 CN CN201911415089.7A patent/CN111015532A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6150772A (en) * | 1984-08-21 | 1986-03-13 | Goei Seisakusho:Kk | Polishing wheel |
| CN106826587A (en) * | 2015-12-03 | 2017-06-13 | 台山市兰宝磨具有限公司 | A kind of skive and preparation method thereof |
| CN205271770U (en) * | 2015-12-15 | 2016-06-01 | 珠海市巨海科技有限公司 | Dicyclo resin bond diamond grinding wheel |
| CN109333389A (en) * | 2018-12-04 | 2019-02-15 | 徐州艾佳机器人科技有限公司 | A kind of high-precision resin wheel and its processing technology |
| CN110303437A (en) * | 2019-06-17 | 2019-10-08 | 郑州磨料磨具磨削研究所有限公司 | A kind of glass-cutting resin wheel and preparation method thereof |
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Application publication date: 20200417 |
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