JPH02224977A - Low noise resinoid offset grinding wheel - Google Patents
Low noise resinoid offset grinding wheelInfo
- Publication number
- JPH02224977A JPH02224977A JP4475689A JP4475689A JPH02224977A JP H02224977 A JPH02224977 A JP H02224977A JP 4475689 A JP4475689 A JP 4475689A JP 4475689 A JP4475689 A JP 4475689A JP H02224977 A JPH02224977 A JP H02224977A
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- grinding wheel
- resinoid
- natural
- synthetic rubber
- Prior art date
- 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.)
- Pending
Links
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 11
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 5
- 229920001194 natural rubber Polymers 0.000 claims abstract description 5
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 5
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 5
- 239000005011 phenolic resin Substances 0.000 claims abstract description 3
- 239000006061 abrasive grain Substances 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 206010011903 Deafness traumatic Diseases 0.000 description 1
- 208000002946 Noise-Induced Hearing Loss Diseases 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002508 compound effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は研削作業に使用する携帯用グラインダの砥石
、特にレヂノイドオフセット研削砥石の低騒音化に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a grindstone for a portable grinder used in grinding operations, particularly to a noise reduction of a resinoid offset grinding wheel.
従来の技術としては、例えば特公昭５２−４２２６９号
公報がある。As a conventional technique, there is, for example, Japanese Patent Publication No. 52-42269.
レヂノイドオフセノト研削砥石は一般に使用速度（周速
）が毎分４．３００ｍと高速度で使用する為に研削作業
中、被削材の金属類と、砥石の摩擦音及び振動音が合成
され、騒音の原因となり、９５〜９７デシベル（騒音計
の聴感補正回路のＡ特性測定）にもなる。Because resinoid offset grinding wheels are generally used at high speeds (circumferential speeds) of 4.300 m/min, during grinding work, the metals of the workpiece and the frictional and vibrational sounds of the grinding wheel are synthesized. It causes noise, reaching as high as 95 to 97 decibels (measured by A-characteristics of a sound level meter's hearing correction circuit).
この様な騒音環境に長時間さらされると、作業者は不快
感を持つばかりでなく、注意力が散漫となり、作業能率
の低下はもとより、怪我や騒音性難聴などの健康障害に
なることが広く知られている。When workers are exposed to such a noisy environment for a long time, they not only feel uncomfortable, but also become distracted, leading to a decline in work efficiency and a wide range of health problems such as injury and noise-induced hearing loss. Are known.
更に、この様な高騒音環境は作業者自身の被害にとゾま
らす、周囲の作業者や附近の第３者にも騒音公害の形で
広範に被害を及ぼし、現在社会問題化しているのは衆知
のことである。Furthermore, such high-noise environments not only cause damage to the workers themselves, but also cause widespread damage to surrounding workers and third parties in the form of noise pollution, and are currently becoming a social problem. refers to common knowledge.
本発明のレヂノイドオフセット研削砥石は、研削中に発
生する振動を予め砥石中に埋没させた０１〜２．０ ｍ
ｍ厚さの天然又は合成ゴム層で吸収させることによって
騒音を低下させるものである。The resinoid offset grinding wheel of the present invention has a grinding wheel of 01 to 2.0 m that is pre-embedded in the grinding wheel to eliminate vibrations generated during grinding.
Noise is reduced by absorbing it with a natural or synthetic rubber layer of m thickness.
上述のごとく防振、防音の目的でゴム層を埋設すること
により、従来の砥石に比べ約１０デシベル低下させるこ
とに成功した。このことは従来の砥石が９５〜９７デシ
ベルなので凡そ１０％強の低下になるが実感では約５０
％減となります。As mentioned above, by embedding a rubber layer for the purpose of vibration and sound insulation, we succeeded in reducing the noise level by approximately 10 decibels compared to conventional grindstones. This means that conventional grindstones have a level of 95 to 97 decibels, so this is a decrease of about 10%, but in reality it is about 50 decibels.
% reduction.
また、複次的効果として、被削材と砥石の衝撃力が緩和
される為に砥粒の無駄な脱落が少なくなり全砥粒が有効
に研削作用に関与するので従来の砥石と比べて研削性能
も著しく向上した。In addition, as a compound effect, the impact force between the workpiece and the grinding wheel is alleviated, reducing unnecessary drop-off of abrasive grains, and all abrasive grains are effectively involved in the grinding action, which improves grinding compared to conventional grinding wheels. Performance has also improved significantly.
本発明の実施例を以下に記述する。 Examples of the invention are described below.
げ）使用原材料
ゴムシート
（３） フェノール樹脂被膜ガラスクロス（補強材
ガラスクロス）（ロ）成型方法及び条件
（１） 非研削面側用の補強材ガラスクロスを金型に
入れ加熱する。（８０℃で３秒間）（２） 軟融した
補強材ガラスクロスを加圧により金型面に密着させる。(g) Raw material rubber sheet used (3) Phenol resin coated glass cloth (reinforcement glass cloth) (b) Molding method and conditions (1) The reinforcement glass cloth for the non-grinded side is placed in a mold and heated. (3 seconds at 80°C) (2) The softened reinforcing glass cloth is brought into close contact with the mold surface by pressure.
（３） 予め計量した１６０ｇｒの樹脂被膜と粒（研
削材原料）を金型に投入し、回転均し羽根により均一な
層に均す。(3) 160g of pre-weighed resin coating and grains (raw material for abrasive) are placed in a mold and leveled into a uniform layer using a rotating leveling blade.
（４） ゴムシートを入れた後、中層用の補強材ガラ
スクロスを入れ加熱する。(4) After putting in the rubber sheet, add the reinforcing glass cloth for the middle layer and heat it.
（５） 加圧により、研削材原料層に密着させる。(5) Apply pressure to bring it into close contact with the abrasive material layer.
（０，０２ｋｇ／７で３秒間加圧）
（６）研削材料を１８０ｇｒ金型に投入し、（３）と同
様な方法により均一な層に均す。(Press at 0.02 kg/7 for 3 seconds) (6) Put the grinding material into a 180 gr mold and level it into a uniform layer by the same method as in (3).
（７）研削面側用補強材ガラスクロスを入れ、さらに埋
込金具を入れた後５０℃の温度で３０秒間加熱する。(7) After inserting the reinforcing material glass cloth for the grinding surface side and further inserting the embedded metal fittings, heat at a temperature of 50° C. for 30 seconds.
（８１５０ｋｇ／ｃＪの油圧プレスで５秒間加圧する。(Pressure for 5 seconds with a hydraulic press of 8150 kg/cJ.
（９）金型を分解し生型と石を取り出す。(9) Disassemble the mold and take out the raw mold and stone.
研削の条件としては
被削材質及び寸法ニ一般構造用鋼材５Ｓ−４１１５８１
ｘ１品１８ｄｌ１ｍ研削送り速度： ６．７ｍ／ｍ
研削荷重及び研削角度： ４．４ｋｇ（り°ラインタ
ーの自重）、１５度使用騒音計：■テスコ志木製
（２）研削性能比較
フセノト砥石と、従来型（自社製）のレヂノイドオフセ
ソト砥石との研削比較テストを行ったところ以下の結果
となった。The grinding conditions are as follows: Work material and dimensions General structural steel 5S-411581
x 1 item 18 dl 1 m Grinding feed rate: 6.7 m/m Grinding load and grinding angle: 4.4 kg (dead weight of the liner), 15 degrees Noise meter used: ■ Tesco Shiki (2) Grinding performance comparison Fusenote whetstone and When we conducted a grinding comparison test with a conventional (manufactured in-house) resinoid offset grinding wheel, we obtained the following results.
４゜
〔発明の効果〕
上記実施例の比較試験結果で明らかなごとく本発明によ
る研削砥石は、研削時の騒音を大ｒｌＪに低下させると
共に、研削性能を著しく向上させることに成功した。4゜[Effects of the Invention] As is clear from the comparative test results of the above examples, the grinding wheel according to the present invention succeeded in reducing the noise during grinding to a large rlJ and significantly improving the grinding performance.
また、製造するにあたり特別な新規設備を要さず、安価
な砥石を市場に供給することが可能となり、本発明のも
たらす環境改善と経済的効果は大である。In addition, it is possible to supply inexpensive grindstones to the market without requiring special new equipment for production, and the present invention has great environmental improvement and economic effects.
第１図は本発明になるレヂノイドオフセット研削砥石の
断面図、第２図は同Ａ部詳細図である。
１・・・非研削面側の補強材ガラスクロス２・・・中層
の補強材ガラスクロス
３・・・研削面側の補強材ガラスクロス４・・・研削材
原料、５・・・天然又は合成ゴム層６・・・埋込金具FIG. 1 is a sectional view of the resinoid offset grinding wheel according to the present invention, and FIG. 2 is a detailed view of section A thereof. 1... Reinforcement glass cloth on the non-grinding surface side 2... Reinforcement glass cloth in the middle layer 3... Reinforcement glass cloth on the grinding surface side 4... Grinding material raw material, 5... Natural or synthetic Rubber layer 6...embedded metal fittings
Claims (1)
〜２．０ｍｍ厚さの天然又は合成ゴムの層を重ね合せた
状態で、砥石中に埋没させて一体成型させたことを特長
とするレヂノイドオフセット研削砥石。Glass cloth coated with phenol resin in advance and 0.1
A resinoid offset grinding wheel characterized by overlapping layers of natural or synthetic rubber with a thickness of ~2.0 mm, which are embedded in the grindstone and integrally molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4475689A JPH02224977A (en) | 1989-02-23 | 1989-02-23 | Low noise resinoid offset grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4475689A JPH02224977A (en) | 1989-02-23 | 1989-02-23 | Low noise resinoid offset grinding wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02224977A true JPH02224977A (en) | 1990-09-06 |
Family
ID=12700275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4475689A Pending JPH02224977A (en) | 1989-02-23 | 1989-02-23 | Low noise resinoid offset grinding wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02224977A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019511375A (en) * | 2016-03-03 | 2019-04-25 | スリーエム イノベイティブ プロパティズ カンパニー | Concave central grinding wheel |
| US11597059B2 (en) | 2017-11-21 | 2023-03-07 | 3M Innovative Properties Company | Coated abrasive disc and methods of making and using the same |
| US11607775B2 (en) | 2017-11-21 | 2023-03-21 | 3M Innovative Properties Company | Coated abrasive disc and methods of making and using the same |
-
1989
- 1989-02-23 JP JP4475689A patent/JPH02224977A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019511375A (en) * | 2016-03-03 | 2019-04-25 | スリーエム イノベイティブ プロパティズ カンパニー | Concave central grinding wheel |
| US11597059B2 (en) | 2017-11-21 | 2023-03-07 | 3M Innovative Properties Company | Coated abrasive disc and methods of making and using the same |
| US11607775B2 (en) | 2017-11-21 | 2023-03-21 | 3M Innovative Properties Company | Coated abrasive disc and methods of making and using the same |
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