CN100377841C - Abrasive wheel for grinding - Google Patents
Abrasive wheel for grinding Download PDFInfo
- Publication number
- CN100377841C CN100377841C CNB021479755A CN02147975A CN100377841C CN 100377841 C CN100377841 C CN 100377841C CN B021479755 A CNB021479755 A CN B021479755A CN 02147975 A CN02147975 A CN 02147975A CN 100377841 C CN100377841 C CN 100377841C
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- CN
- China
- Prior art keywords
- grinding
- layer
- fiber
- emery wheel
- abrasive
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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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
- B24D5/08—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with reinforcing means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The objective of this invention is to provide a grinding wheel that ensures a certain degree of extensibility of a grinding layer along a circumferential direction so as to allow gentle grinding operations and to prevent excessive grinding and abruption of grinding wheel. According to this invention, the grinding wheel is provided with a porous resilient body on a cylindrical core of the grinding wheel. On the outer periphery of the porous resilient body is provided with a reinforcing layer with fibers. On the outer periphery of the reinforcing layer is provided with a grinding layer. The reinforcing layer is preferably provided with more than one fibrous layer within an interior of a rubber layer.
Description
Technical field
The present invention relates to be used in tabular being ground cuts grinding of material and cuts grinding emery wheel with processing grinding (following unified with " grindings " or " grind etc. "); More detailed theory relates to the grinding emery wheel that uses in the grinding of the grinding of printed circuit board (PCB) etc. or metallic plate or non-metal board etc.
Background technology
In existing technology, tabular by grinding of grinding-material, particularly printed circuit board (PCB) etc. in, use so-called abrasive band.
But generally abrasive power is relatively more sufficient in the early stage in the abrasive band, but adheres to lapping rejects easily, and because grinding layer is thinner, can not continue to keep stable abrasive power.Therefore, the shortcoming that must frequently carry out the abrasive band replacing is arranged.
Grinding under the situation of printed circuit board (PCB), requirement can evenly grind tabular by the fluctuation of grinding-material, be so-called have fluctuating by grinding-material, and wish to continue to have stable nonferromagnetic substance.
Summary of the invention
The inventor has studied with keen determination and has guaranteed that in rotating emery wheel but the grinding layer circumferencial direction has stretching, extension soft grinding to a certain degree and can prevent after the peeling off of too much grinding and emery wheel, proposed to finish the present invention accompanying the formation that fiber more than 1 contains layer between porous elastomer and grinding layer.
Promptly, a kind of grinding emery wheel of the present invention is characterized in that, on the core periphery of hollow cylindrical the porous elastomer is set, enhancement Layer with fiber is set on this porous elastomer periphery, the grinding layer that comprises a plurality of block grinding stones is set on the periphery of this enhancement Layer; Aforementioned enhancement Layer has the fibrage that comprises aforementioned fibers more than 1 in rubber layer inside; The aforementioned fibers layer is that aforementioned fibers is reeled and the arlt's strata of formation at circumferencial direction.
With in the emery wheel, aforementioned enhancement Layer preferably has this fibrolaminar formation more than 1 in rubber layer inside in aforementioned grinding.But the material organic material or the inorganic material of aforementioned fibers.The fiber of this organic material can be selected for use from aromatic polyamides (ア ラ ミ De) fiber, polyester fiber, hexanoyl (ケ プ ラ) fiber or nylon fiber series.
Description of drawings
Fig. 1 is the grinding of a invention process form emery wheel sectional drawing.
Fig. 2 is the enlarged drawing of the enhancement Layer periphery of present embodiment.
Fig. 3 is the plane of the grinding of present embodiment with emery wheel.
Fig. 4 is the ideograph that is illustrated in employed test model in the grinding test of embodiment.
Fig. 5 be expression to Fig. 4 test model by grinding-material on the ideograph of the model made.
The specific embodiment
Following with reference to description of drawings one embodiment of the invention.
Fig. 1 is the sectional drawing of the grinding of present embodiment with emery wheel.In the figure, symbol 1 is cylindric core, and symbol 2 is porous elastomers, and symbol 3 is to have fibrolaminar enhancement Layer, and symbol 4 is expression grinding layers.
Establish porous elastomer 2 in the periphery of core 1.The material of porous elastomer 2 is such as being the organic porous material of foaminess.Typical porous elastomer 2 is sponge materials.
On the periphery of porous elastomer 2, establish enhancement Layer 3.As shown in Figure 2, enhancement Layer 3 has the fibrage that is made of fiber 3a.Fiber 3a gives enhancement Layer 3 with desirable hot strength.Such enhancement Layer 3 is sandwiched between porous elastomer 2 and the grinding layer 4, can makes the emery wheel when grinding keep desirable intensity and flexibility.
By the fibrage that fiber 3a constitutes, fiber 3a can be reeled along the circumferencial direction of emery wheel constitutes.In Fig. 2, show helical coil around the equally spaced section of fiber 3a.In addition, fibrolaminar form is not limited to spiral helicine coiling, also can be the netted of braided fiber formation.As typical arlt's strata, can enumerate the fabric or the cloth of the synthetic fibers that are used for dress material.In this case, material is not only cheap, and it is also easy to obtain processing.
As fiber 3a, can use the pencil line that the twisting of many single line shape lines is formed.With respect to this, under the situation of using single line, the short coiling at interval of single line is difficulty very, does also and takes a lot of trouble, and can produce the danger that hinders abrasiveness and security when especially single line cuts off in grinding.Therefore, best fiber condition in the present invention is the wire harness that the single line twisting is got up.
About the material of fiber 3a, the organic material inorganic material is all right; The most handy inorganic material when emphasizing intensity; And when emphasizing the in light weight and flexibility of grinding wheel, the most handy organic material.These are all suitably selected according to grinding condition.
In the fiber of organic material, can use general fibrous material such as aromatic polyamides (ア ラ ミ De) fiber, polyester fiber, hexanoyl (ケ プ ラ-) fiber, nylon fiber.In grinding of printed circuit board (PCB) etc., compare with inorganic material, preferably operating weight has the fiber of the organic material of flexibility gently, again.
The material that uses in grinding layer 4 can use the material of grinding with the general use of emery wheel.
The abrasive material of Shi Yonging in the present invention, generally can from alumina series abrasive material, carborundum be abrasive material, zirconia be abrasive material, CBN abrasive material, with diamond abrasive series select to use more than a kind.Can be according to grinding the condition of cutting etc. and being ground material and suitably select its combination.
Employed in the present invention binding agent can suitably be selected from binding agents such as pottery, thermosetting resin, PVA or silicic acid fat.Burn till or harden after composition, using under the situation of vitrified bonding, the porosity is 10～50%, preferably 15～45%; Abrasive particle percentage is 30～55%, preferably 35～50%.Using under the thermosetting resin binder situation, the porosity is 0～20%, preferably 0～10%, and abrasive particle percentage is 20～45%, preferably 20～40%.Using under the PVA bond situation, the porosity is 20～50%, preferably 30～50%, and abrasive particle percentage is 20～45%, preferably 20～40%.Using under the magnesia binding agent situation, the porosity is 0～20%, preferably 0～10%, and abrasive particle percentage is 20～40%, preferably also is 20～40%.The low then abrasiveness of abrasive particle percentage degenerates, and the danger of the filling of producing is arranged as abrasive particle percentage height.The binding agent rate is the value that deducts behind the porosity and the abrasive particle percentage from 10%.The decision that selection of binder and emery wheel are formed all will be according to grinding condition and by suitably selections such as the materials of grinding-material.
Fig. 3 shows the form example of grinding layer 4.Grinding layer 4 is if the one grinding layer of single ring-type can not get the flexibility corresponding to abradant surface.Therefore, on grinding layer 4, for example can adopt the form that attaches a plurality of secter pat molding sand wheels, or picture as shown in Figure 3, adopt the form that attaches many little block grinding stones.In grinding layer 4, can consider various forms,, not limit particular form as long as can guarantee the flexibility of grinding layer 4.In addition, grinding layer 4 also has such preparation method: on thin rubber layer polishing slate is set and makes, rubber layer is wound in the periphery of enhancement Layer 3, attach like this.
The thickness of aforementioned grinding layer 4,0.5mm～5mm preferably under the situation of using CBN abrasive material or diamond abrasive, under the abrasive material situation of using beyond CBN abrasive material or the diamond abrasive, 3mm～15mm preferably.
Below, embodiments of the invention are described together with comparative example, these also do not mean that any qualification that the present invention is constituted.
Embodiment
The grinding layer material
Abrasive material: friendly silicon carbide grinding materials (GC abrasive material), granularity 600
#
Binding agent: to 13.7: 100 powder phenolic resins of abrasive by weight.
The production order of grinding layer
At the abrasive plate that above-mentioned composite material is evenly mixed back, cooling forming area 60 * 240mm, thick 9mm.After 170 ℃, 8 hours sclerosis, attaching has fibrolaminar rubber layer on the abrasive plate of moulding.With cutting machine the grinding layer on the rubber layer is partly cut into the chessboard trellis, make grinding layer with many small pieces grinding stone pieces.Make the same grinding layer of polylith again.
Grind production order with emery wheel
On the stacked pipe of the phenolic resins of aperture 76.2mm, attach sponge, porous matter elastic layer is set.
Reel and be bonded on the periphery of spongy layer having attached rubber layer curl that abrasive material, inside has the enhancement Layer that is made of polyester fiber above it, make to grind and use emery wheel.
Employed polyester fiber cloth in enhancement Layer is that the fiber bunchy with many diameters 20 μ m is the material that diameter 0.8mm, spacing 0.7mm inweave.
Then, carry out the processing of grinding layer and handle, make the grinding emery wheel of external diameter 150mm, length 610mm, aperture 76.2mm.
Comparative example
As a comparative example, consider with general commercially available abrasive band 650 * 200mm.Abrasive material is alumina series abrasive material (A abrasive material), granularity 600
#
Use the abrasive material of the foregoing description and comparative example, carry out following grinding test.
As by grinding-material, used the glass epoxy resin of the band Copper Foil of thickness 0.6mm, size 510 * 406mm.Following experimental model is set in by grinding-material.As shown in Figure 4, as a test model, be designed to establish at interval with 5mm in the 35mm angle hole of 0.3mm.Then, such model picture is printed as shown in Figure 5 totally 36 of 6 row * 6 row.After through hole plating, imbed with the resin that liquid epoxy resin carries out through hole with the reticulated printing machine, after sclerosis in 150 ℃, 2 hours, on by grinding-material, make test model.
Under following each grinding condition to making being ground of test model by grinding-material.Behind each self-grind, check have or not after the projection remove the resin of imbedding the test model hole inhomogeneous.
The grinding condition of embodiment
Emery wheel size: 150mm (external diameter) * 610mm (length) * 76.2 (aperture)
Grinding machinery: printed circuit board (PCB) grinder
Grinding wheel speed: 2000rpm
By grinding-material feed speed: 2m/min
Vibration: 470cpm
Cycle-index: 1 circulation
The grinding condition of comparative example
Grinding machinery: belt grinding machine
Peripheral speed: 500m/min
By grinding-material feed speed: 2m/min
Grind and press :+1.5～2.0A
Cycle-index: 2 circulations.
In order to estimate emery wheel, bury removing of resin for the hole, count producing grinding layer consumption before the inhomogeneous grinding number of packages before being over by the grinding number of packages of grinding-material and emery wheel.Each is ground being compared as follows of number of packages.
Result of the test
Remove inhomogeneous generation number of packages grinding layer and consume number of packages
Embodiment 300 3000
Comparative example 100 100
As can be seen from the test results, embodiment removes inhomogeneous generation number of packages, with the abrasive band of comparative example relatively be its 3 times.Moreover the emery wheel of embodiment even produce inhomogeneously midway, as still recovering abrasive power to abradant surface finishing, can be ground to and the same number of packages of inhomogeneous situation not take place.To this, in the abrasive band,, be to the life-span when grinding inhomogeneous generation because grinding layer is one deck.In addition, up to the grinding number of packages that grinding layer runs out, the emery wheel of present embodiment is 3000, and comparing with comparative example is its 30 times.
In the abrasive band, grind and to proceed after the inhomogeneous generation to grind the abrasive band that must more renew.Carry out the replacing operation in abrasive band, abrasive band quantity in stock to a certain degree must be arranged.Thereby, to compare with present embodiment, the production efficiency in abrasive band is far short of what is expected.
As mentioned above, grinding emery wheel of the present invention, with the abrasive band relatively, life-cycle is long, and is by grinding-material, particularly very effective to the grinding and the processing grinding of printed circuit board (PCB) to tabular.Like this, the present invention is of great use to the making of high density, high performance printed circuit board (PCB).
Claims (3)
1. grinding emery wheel, it is characterized in that, on the periphery of the core of hollow cylindrical, the porous elastomer is set, the enhancement Layer with fiber is set on this porous elastomer periphery, the grinding layer that comprises a plurality of block grinding stones is set on the periphery of this enhancement Layer; Aforementioned enhancement Layer has the fibrage that comprises aforementioned fibers more than 1 in rubber layer inside; The aforementioned fibers layer is that aforementioned fibers is reeled and the arlt's strata of formation at circumferencial direction.
2. by the described grinding emery wheel of claim 1, it is characterized in that the material of the fiber of aforementioned fibers layer is organic material or inorganic material.
3. by the described grinding emery wheel of claim 2, it is characterized in that the fiber of aforementioned organic material is selected to use from the series that comprises aramid fibre, polyester fiber, hexanoyl fiber or nylon fiber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002152433 | 2002-05-27 | ||
| JP152433/2002 | 2002-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1461687A CN1461687A (en) | 2003-12-17 |
| CN100377841C true CN100377841C (en) | 2008-04-02 |
Family
ID=29769770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021479755A Expired - Fee Related CN100377841C (en) | 2002-05-27 | 2002-10-31 | Abrasive wheel for grinding |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20030091641A (en) |
| CN (1) | CN100377841C (en) |
| TW (1) | TWI239879B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256746B (en) | 2008-12-30 | 2014-04-16 | 圣戈班磨料磨具有限公司 | Reinforced bonded abrasive tools |
| CN102229086A (en) * | 2011-05-20 | 2011-11-02 | 广州市敏嘉制造技术有限公司 | Method for grinding globoid cam by using variable-diameter grinding wheel |
| AR093483A1 (en) * | 2012-11-20 | 2015-06-10 | Saint Gobain Abrasives Inc | ABRASIVE ARTICLE THAT INCLUDES ABRASIVE PARTICLES OF A COMPOSITE COMPOSITION |
| KR101681497B1 (en) | 2015-11-20 | 2016-12-01 | (주)승진기계 | Polishing grindstone |
| DE102015122233A1 (en) * | 2015-12-18 | 2017-06-22 | Thyssenkrupp Ag | Mass reduced grinding base body |
| CN107717765B (en) * | 2017-11-03 | 2019-04-05 | 郑州磨料磨具磨削研究所有限公司 | A kind of grinding wheel and preparation method thereof applied to the grinding of ceramic insertion core concentricity |
| CN112123225A (en) * | 2020-08-26 | 2020-12-25 | 南京航空航天大学 | Elastic milling and polishing tool for machining brittle workpiece and manufacturing method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707950A (en) * | 1986-04-16 | 1987-11-24 | Toho Yogyo Kabushiki Kaisha | Ring grinding tool |
| JPH01301071A (en) * | 1988-05-28 | 1989-12-05 | Noritake Co Ltd | Short fiber reinforced grinding wheel for on-line roll grinding |
| EP0355732A2 (en) * | 1988-08-24 | 1990-02-28 | Fritz Studer AG | Grinding wheel |
| JPH08112767A (en) * | 1994-10-18 | 1996-05-07 | Daido Steel Co Ltd | Steel piece maintenance cleaning grinding wheel and steel piece maintenance cleaning grinding method |
| CN1125413A (en) * | 1993-06-17 | 1996-06-26 | 美国3M公司 | Abrasive belts with an endless, flexible, seamless backing and methods of preparation |
| US5591239A (en) * | 1994-08-30 | 1997-01-07 | Minnesota Mining And Manufacturing Company | Nonwoven abrasive article and method of making same |
| TW333490B (en) * | 1997-09-02 | 1998-06-11 | San Yeong Grinding Materials Co Ltd | Fabrication method and conformation for fiber grinding wheel |
| US6033294A (en) * | 1997-11-13 | 2000-03-07 | Tsai; Chin Yuan | Turntable of nylon fiber grinding wheel |
| JP2000079565A (en) * | 1998-09-02 | 2000-03-21 | Noritake Co Ltd | Double structure vitrified grinding wheel |
| US20010044006A1 (en) * | 2000-01-03 | 2001-11-22 | Kruegler Gerald F. | Nonwoven buffing or polishing material having increased strength and dimensional stability |
-
2002
- 2002-10-30 KR KR1020020066479A patent/KR20030091641A/en active Search and Examination
- 2002-10-31 CN CNB021479755A patent/CN100377841C/en not_active Expired - Fee Related
- 2002-11-29 TW TW091134830A patent/TWI239879B/en not_active IP Right Cessation
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707950A (en) * | 1986-04-16 | 1987-11-24 | Toho Yogyo Kabushiki Kaisha | Ring grinding tool |
| JPH01301071A (en) * | 1988-05-28 | 1989-12-05 | Noritake Co Ltd | Short fiber reinforced grinding wheel for on-line roll grinding |
| EP0355732A2 (en) * | 1988-08-24 | 1990-02-28 | Fritz Studer AG | Grinding wheel |
| CN1125413A (en) * | 1993-06-17 | 1996-06-26 | 美国3M公司 | Abrasive belts with an endless, flexible, seamless backing and methods of preparation |
| US5591239A (en) * | 1994-08-30 | 1997-01-07 | Minnesota Mining And Manufacturing Company | Nonwoven abrasive article and method of making same |
| JPH08112767A (en) * | 1994-10-18 | 1996-05-07 | Daido Steel Co Ltd | Steel piece maintenance cleaning grinding wheel and steel piece maintenance cleaning grinding method |
| TW333490B (en) * | 1997-09-02 | 1998-06-11 | San Yeong Grinding Materials Co Ltd | Fabrication method and conformation for fiber grinding wheel |
| US6033294A (en) * | 1997-11-13 | 2000-03-07 | Tsai; Chin Yuan | Turntable of nylon fiber grinding wheel |
| JP2000079565A (en) * | 1998-09-02 | 2000-03-21 | Noritake Co Ltd | Double structure vitrified grinding wheel |
| US20010044006A1 (en) * | 2000-01-03 | 2001-11-22 | Kruegler Gerald F. | Nonwoven buffing or polishing material having increased strength and dimensional stability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1461687A (en) | 2003-12-17 |
| TWI239879B (en) | 2005-09-21 |
| KR20030091641A (en) | 2003-12-03 |
| TW200306902A (en) | 2003-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WU WHEEL CO., LTD. Free format text: FORMER OWNER: WUNORTON CO., LTD. Effective date: 20080926 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080926 Address after: Tokyo, Japan Patentee after: Kure Grinding Wheel Co. Address before: Tokyo, Japan Patentee before: Kure Norton Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20151031 |
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| EXPY | Termination of patent right or utility model |