JPH08112768A - Regenerating method for grinding wheel - Google Patents
Regenerating method for grinding wheelInfo
- Publication number
- JPH08112768A JPH08112768A JP6249392A JP24939294A JPH08112768A JP H08112768 A JPH08112768 A JP H08112768A JP 6249392 A JP6249392 A JP 6249392A JP 24939294 A JP24939294 A JP 24939294A JP H08112768 A JPH08112768 A JP H08112768A
- Authority
- JP
- Japan
- Prior art keywords
- grindstone
- grinding wheel
- base material
- adhesive
- peripheral surface
- 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.)
- Withdrawn
Links
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、砥石母材に砥石チップ
を接着した砥石において、砥石母材の再利用を図った砥
石の再生方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of reclaiming a grindstone in which a grindstone base material is reused in a grindstone in which a grindstone tip is bonded to a grindstone base material.
【０００２】[0002]
【従来の技術】従来、例えば特開平６−７１５６８号の
ように、砥石母材の外周面にショット加工或いはローレ
ット加工を施して粗面化し、この粗面化した外周面に接
着剤を介して砥石チップを接着することで砥石チップの
接着強度を高めるような技術が知られている。2. Description of the Related Art Conventionally, as in JP-A-6-71568, for example, the outer peripheral surface of a grindstone base material is roughened by shot processing or knurling, and the roughened outer peripheral surface is bonded with an adhesive. There is known a technique of increasing the bonding strength of the grindstone chip by bonding the grindstone chips.
【０００３】また、例えば特開平６−９９３５８号のよ
うな砥石の再生方法も知られている。この方法は、基台
（本案の砥石母材に相当）に固着した焼結層（本案の砥
石チップに相当）を研削加工、切削加工、レーザー加
工、或いは化学的溶解により除去し、その加工面に新し
い焼結層を固着することで基台の再利用を図るようにし
ている。A method of reclaiming a grindstone is also known, for example, as disclosed in JP-A-6-99358. This method removes the sintered layer (corresponding to the grinding wheel tip of the present invention) fixed to the base (corresponding to the grinding wheel base material of the present invention) by grinding, cutting, laser machining, or chemical dissolution, and the processed surface The base is reused by fixing a new sintered layer on the base.
【０００４】[0004]
【発明が解決しようとする課題】ところで、前者のよう
に砥石母材の外周面を粗面化して砥石チップを固着して
いる場合、後者のような技術を採用して砥石母材の再利
用を図ろうとすると不都合が生じていた。すなわち、砥
石チップを剥がし取っても粗面化した外周面の凹部内に
接着剤が残留し、これを機械加工にて除去しようとする
と砥石母材の表面を削り取る必要が生じて砥石径が変化
したり、又は化学的溶解にて除去しようとすると廃液等
の処理が必要になるという問題があった。By the way, when the outer peripheral surface of the grindstone base material is roughened and the grindstone tips are fixed as in the former case, the latter technique is adopted to reuse the grindstone base material. There was an inconvenience when trying to achieve. That is, even if the grindstone tip is peeled off, the adhesive remains in the recessed portion of the roughened outer peripheral surface, and if it is attempted to remove this by machining, it is necessary to scrape the surface of the grindstone base material and the grindstone diameter changes. However, there is a problem that a waste liquid or the like needs to be treated if it is removed by chemical dissolution or chemical dissolution.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
本発明は、粗面化された砥石母材の外周面に接着剤を介
して砥石チップを固着してなる砥石の再生方法におい
て、加熱工程にて使用済み砥石の砥石母材を加熱して接
着剤を軟化させ、除去工程にて砥石母材の外周面から使
用済みの砥石チップと接着剤層を除去するとともに、こ
の除去工程で除去しきれなかった砥石母材表面の残留接
着剤をブラスト加工工程にて除去し、固着工程にてブラ
スト加工後の砥石母材の外周面に新たな砥石チップを固
着するようにした。そして、砥石母材の当初の外周面の
粗面化をブラスト加工にて行い、再生処理に伴うブラス
ト加工工程のブラスト加工条件を当初のブラスト加工条
件と同一にした。In order to solve the above-mentioned problems, the present invention provides a method for reclaiming a grindstone in which a grindstone tip is fixed to an outer peripheral surface of a roughened grindstone base material with an adhesive. The grindstone base material of the used grindstone in the process is heated to soften the adhesive, and the used grindstone chip and the adhesive layer are removed from the outer peripheral surface of the grindstone base material in the removal process and also removed in this removal process. Residual adhesive on the surface of the grinding stone base material that could not be completely removed was removed in the blasting process, and a new grinding stone chip was fixed to the outer peripheral surface of the grinding stone base material after the blasting processing in the fixing process. Then, the initial roughening of the outer peripheral surface of the grindstone base material was performed by blasting, and the blasting conditions in the blasting process accompanying the regeneration treatment were made the same as the initial blasting conditions.
【０００６】[0006]
【作用】加熱工程で接着剤を軟化させた後、除去工程で
使用済みの砥石チップと接着剤を剥がすと容易に除去す
ることが出来る。この際、主に砥石母材の外周面の凹部
等に接着剤が残留するため、砥石母材を冷却した後外周
面にブラスト加工を行うと、接着剤は加熱によって劣化
しているため簡単に除去される。また、ブラスト加工に
て砥石母材の外周面に新たな凹凸面が形成され、新たな
砥石チップの接着効果が高まる。この際、ブラスト加工
は、砥石母材の外周面を機械加工する場合に較べて砥石
の寸法管理が楽になる。また、当初のブラスト条件と再
生処理に伴うブラスト条件を同一にすることで、残留接
着剤を綺麗に除去することが出来、しかも新たな砥石チ
ップの接着効果が高まる表面粗さに加工出来る。After the adhesive is softened in the heating step, the used grindstone chips and the adhesive are peeled off in the removing step, whereby the adhesive can be easily removed. At this time, since the adhesive remains mainly in the recesses on the outer peripheral surface of the grindstone base material, if the blast processing is performed on the outer peripheral surface after cooling the grindstone base material, the adhesive deteriorates due to heating, so it is easy. To be removed. In addition, a new uneven surface is formed on the outer peripheral surface of the grinding stone base material by blasting, and the effect of adhering a new grinding stone tip is increased. At this time, the blasting process makes it easier to control the size of the grindstone as compared with the case of machining the outer peripheral surface of the grindstone base material. Further, by making the initial blasting condition and the blasting condition associated with the regeneration treatment the same, it is possible to cleanly remove the residual adhesive and to process the surface roughness so that the adhesive effect of a new grindstone tip is enhanced.
【０００７】[0007]
【実施例】本発明の実施例について添付した図面に基づ
き説明する。ここで、図１は砥石の斜視図、図２は同正
面からみた部分図、図３は使用済み砥石の部分図であ
る。本発明の砥石の再生方法は、図１に示すような研削
砥石１において、例えば金属又はセラミックス製の円盤
状の砥石母材２の外周面に例えばエポキシ系等の接着剤
３を介して固着された円弧状の複数の砥石チップ４、…
が所定の厚みまで使い古されると、この使用済みの砥石
チップ４、…と接着剤３層を剥がし取った後、砥石母材
２の外周面に新しい砥石チップ４、…を固着して砥石母
材２を再利用しようとするものである。Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a perspective view of a grindstone, FIG. 2 is a partial view seen from the front, and FIG. 3 is a partial view of a used grindstone. The method for reclaiming a grindstone of the present invention is such that, in a grindstone 1 as shown in FIG. Multiple arcuate whetstone chips 4, ...
When it has been used up to a predetermined thickness, the used grindstone chips 4, ... And three layers of the adhesive are peeled off, and new grindstone chips 4 ,. 2 is to be reused.
【０００８】この際、砥石母材２の外周面は、接着剤３
の接着効果を高めるため後述するブラスト加工にて粗面
化されている。また、砥石チップ４は、例えば立方晶窒
化硼素（ＣＢＮ）またはダイヤモンドのような硬度の高
い砥粒をビトリファイドボンド等の結合剤で結合保持せ
しめたものであり、例えば使用前において図２に示す厚
みｔが３mm程度であり、この厚みｔが図３に示すように
約０．５mm程度まで減ったら使用済みとして処理する。
尚、接着剤３層の厚みｓも約０．５mm程度に形成されて
いる。At this time, the outer peripheral surface of the grindstone base material 2 is coated with the adhesive 3
The surface is roughened by blasting, which will be described later, in order to enhance the adhesive effect. Further, the grindstone tip 4 is made of abrasive grains having high hardness, such as cubic boron nitride (CBN) or diamond, which are bonded and held by a binder such as vitrified bond, and has a thickness shown in FIG. 2 before use, for example. When t is about 3 mm and the thickness t is reduced to about 0.5 mm as shown in FIG. 3, it is treated as used.
The thickness s of the three layers of adhesive is also set to about 0.5 mm.
【０００９】そこで、図４及び図５に基づき本案の再処
理方法について説明する。ここで図４は使用済みの砥石
チップ４と接着剤３層を剥がし取る要領を示す一例図で
あり、図５は砥石母剤２の表面の拡大図である。使用済
みの砥石については、洗浄した後検査を行う。この検査
は砥石母材２の亀裂等の有無、または寸法異常の有無等
について行われ、砥石母材２の再利用が可能か否かが判
断される。Therefore, the reprocessing method of the present invention will be described with reference to FIGS. 4 and 5. Here, FIG. 4 is an example view showing a procedure for peeling the used grindstone tip 4 and the adhesive 3 layer, and FIG. 5 is an enlarged view of the surface of the grindstone base material 2. The used grindstone is inspected after cleaning. This inspection is performed for the presence / absence of cracks in the grinding stone base material 2 or the presence / absence of dimensional abnormality, and it is determined whether or not the grinding stone base material 2 can be reused.
【００１０】異常がなければ砥石母材２を加熱して接着
剤３層の接着剤を軟化させる。この加熱温度は、接着剤
を軟化させることが出来、且つ砥石母材２に熱負担を与
えない温度、例えば約１５０℃程度とし、この温度に加
熱することで使用済み砥石チップ４を容易に剥がし取る
ことが出来、且つその後自然冷却させた時に接着剤３を
劣化させることが出来る。If there is no abnormality, the grinding stone base material 2 is heated to soften the adhesive of the three layers of adhesive. This heating temperature is a temperature that can soften the adhesive and does not give a heat load to the grinding stone base material 2, for example, about 150 ° C., and the used grinding stone chips 4 can be easily peeled off by heating to this temperature. It can be removed, and the adhesive 3 can be deteriorated when it is naturally cooled thereafter.
【００１１】加熱によって接着剤３を軟化させると、図
４に示すように、例えばタガネ、或いはカッター等の剥
がし具５を使用して使用済み砥石チップ４と接着剤３層
を除去する。この際、接着剤３層は軟化しているため容
易に剥がし取ることが出来る。ところが、砥石母材２の
外周面は図５に示すように凹凸状に粗面化されているた
め、剥がし具５にて除去する前に図５（Ａ）の状態にあ
った接着剤３層は、剥がし具５で除去した後も（Ｂ）に
示すように主として凹部内に残留接着剤３として残り、
剥がし具５だけでは完全に除去することが出来ない。When the adhesive 3 is softened by heating, as shown in FIG. 4, the used grindstone tip 4 and the adhesive 3 layer are removed by using a peeling tool 5 such as a chisel or a cutter. At this time, since the three layers of the adhesive are softened, they can be easily peeled off. However, since the outer peripheral surface of the grindstone base material 2 is roughened in a concavo-convex shape as shown in FIG. 5, the three-layered adhesive agent in the state shown in FIG. 5A before being removed by the peeling tool 5 is used. Remains as the residual adhesive 3 mainly in the recess as shown in (B) even after being removed by the peeling tool 5,
It cannot be completely removed only by the peeling tool 5.
【００１２】そこで、本案では上記除去作業が完了する
と自然冷却させ、次いで（Ｃ）に示すように、砥石母材
２の外周面に向けて投射材６を噴射するブラスト加工を
施し残留接着剤３を取り除く。この投射材６は、例えば
モース硬さ７以上、及び衝撃に対して破砕し難い靭性を
持つ溶融アルミナ砥材を用い、また、粒度はメッシュサ
イズ２４番程度としている。Therefore, in the present invention, after the removal work is completed, it is naturally cooled, and then, as shown in (C), a blasting process is performed to spray the shot material 6 toward the outer peripheral surface of the grindstone base material 2 and the residual adhesive 3 is applied. Get rid of. The shot material 6 is, for example, a fused alumina abrasive material having a Mohs hardness of 7 or more and a toughness that is hard to be crushed by an impact, and the grain size is about 24 mesh size.
【００１３】ところで、このブラスト加工のブラスト条
件（投射材の種類、粒度、ブラスト速度等）は、当初の
砥石母材２の外周面を粗面化した時のブラスト加工条件
と同一にしている。すなわち、当初のブラスト加工でも
メッシュサイズ２４番程度の溶融アルミナ砥材を用い、
砥石母材２の外周面を表面粗さ１０μ〜５０μで粗面化
している。そして、この表面粗さの範囲は接着剤３の接
着強度をほぼ最強に高め得ることが確認されている。因
みにメッシュサイズ１５０番程度の粒度の小さい砥材を
用いた場合は、表面粗さが約７μ程度となって接着効果
は表面粗さを１０μ〜５０μにする場合より劣る。By the way, the blasting conditions (type of blast material, grain size, blasting speed, etc.) of this blasting are the same as the blasting conditions when the outer peripheral surface of the grindstone base material 2 was roughened. That is, in the initial blasting process, a fused alumina abrasive with a mesh size of about 24 was used,
The outer peripheral surface of the grinding stone base material 2 is roughened to have a surface roughness of 10 μ to 50 μ. It has been confirmed that the range of the surface roughness can substantially increase the adhesive strength of the adhesive 3. By the way, when an abrasive material having a mesh size of about 150 and a small grain size is used, the surface roughness is about 7 μ, and the adhesive effect is inferior to the case where the surface roughness is 10 μ to 50 μ.
【００１４】また、残留接着剤３を除去するためのブラ
スト加工において、投射材６等の条件を当初の条件と同
一にするのは、投射材６のメッシュサイズを大きくする
と凹部内に残留する残留接着剤３が凹部底部等に残留し
やすくなり、メッシュサイズを小さくすると表面が平滑
化する傾向となってその後の接着効果が低下するからで
ある。このため、メッシュサイズの他、その他のブラス
ト加工条件を当初のブラスト加工条件と同一条件で加工
すれば、（Ｄ）に示すように残留接着剤３が綺麗に除去
され、しかも元の表面粗さと同じ表面粗さ（１０μ〜５
０μ）で粗面化することが出来る。In the blasting process for removing the residual adhesive 3, the conditions of the shot material 6 and the like are made to be the same as the initial conditions. That is, when the mesh size of the shot material 6 is increased, the residual material remains in the recess. This is because the adhesive 3 is likely to remain on the bottom of the recess, etc., and if the mesh size is reduced, the surface tends to be smooth, and the subsequent adhesive effect is reduced. Therefore, if the other blasting conditions other than the mesh size are processed under the same conditions as the original blasting conditions, the residual adhesive 3 is removed cleanly as shown in (D), and the original surface roughness Same surface roughness (10 ~ 5
0 μ) can be used for roughening.
【００１５】ブラスト加工が終えると、砥石母材２を洗
浄して新しい砥石チップ４を接着剤３で固着する。この
接着は例えば砥石母材２の外周面に塗布した接着剤３の
上から砥石チップ４を圧着し、これを例えば９０℃で６
時間程度加熱して硬化させる。そして、このような接着
法にて例えば接着強度５５０kg/cm2以上の新品砥石同様
の強度を得ることが出来る。After the blasting is finished, the grindstone base material 2 is washed and a new grindstone tip 4 is fixed with the adhesive 3. For this adhesion, for example, the grindstone chip 4 is pressure-bonded onto the adhesive 3 applied to the outer peripheral surface of the grindstone base material 2, and this is bonded at 90 ° C. for 6
Heat for about an hour to cure. With such an adhesion method, it is possible to obtain the same strength as a new grindstone with an adhesion strength of 550 kg / cm 2 or more.
【００１６】以上のような方法で処理すると、機械加工
に較べて砥石径の寸法管理が容易であり、ブラスト加工
にて残留接着剤３を綺麗に除去出来るとともに、砥石母
材２の外周面に形成された新たな凹凸面にて新品と接着
効果が得られる。しかも化学的に溶解処理するような廃
液の問題も生じない。When the above-mentioned method is used, it is easier to control the size of the grindstone diameter as compared with machining, the residual adhesive 3 can be removed cleanly by blasting, and the outer peripheral surface of the grindstone base material 2 can be removed. The new concavo-convex surface thus formed provides a new and adhesive effect. Moreover, there is no problem of waste liquid that is chemically dissolved.
【００１７】[0017]
【発明の効果】以上のように本発明の砥石の再生方法
は、粗面化した砥石母材の外周面に砥石チップを接着し
た砥石を再生するにあたり、砥石母材を加熱して接着剤
を軟化させ砥石チップと接着剤を除去した後、ブラスト
加工にて残留接着剤を除去すると同時に新たな砥石チッ
プの接着強度が保たれる粗面化を行うようにしたため、
効率的で且つ性能の良い砥石の再生処理を行うことが出
来る。また、砥石母材の外周面を機械加工して再生処理
することに較べて砥石径の寸法管理が楽である。この
際、ブラスト加工条件を当初のブラスト加工条件と同一
にすることで、残留接着剤を綺麗に除去することが出来
ることに加え、新たな砥石チップを強固に接着出来ると
いう効果を奏する。As described above, in the method for reclaiming a grindstone of the present invention, when reclaiming a grindstone in which a grindstone chip is bonded to the outer peripheral surface of a roughened grindstone base material, the grindstone base material is heated to remove the adhesive. After softening and removing the grindstone tip and the adhesive, the residual adhesive was removed by blasting, and at the same time the roughening was performed to maintain the adhesive strength of the new grindstone tip.
It is possible to efficiently and efficiently perform the reclaiming process of the grindstone. Further, it is easier to control the diameter of the grindstone as compared with the case where the outer peripheral surface of the grindstone base material is machined and regenerated. At this time, by making the blasting conditions the same as the initial blasting conditions, it is possible to cleanly remove the residual adhesive and to firmly bond a new grindstone tip.
【図１】砥石の斜視図1] Perspective view of a grindstone
【図２】正面からみた砥石の部分図[Figure 2] Partial view of the whetstone seen from the front
【図３】使用済み砥石の部分図[Fig. 3] Partial view of used grindstone
【図４】砥石チップを除去する時の一例図FIG. 4 is an example of removing a grindstone tip.
【図５】粗面化した砥石母材の外表面の拡大図であり、
（Ａ）は砥石チップを除去する前の状態図、（Ｂ）は残
留接着剤が残った状態図、（Ｃ）はブラスト加工前の状
態図、（Ｄ）はブラスト加工後の状態図FIG. 5 is an enlarged view of an outer surface of a roughened grinding stone base material,
(A) is a state diagram before removing the grindstone tip, (B) is a state diagram in which residual adhesive remains, (C) is a state diagram before blasting, and (D) is a state diagram after blasting
１…砥石、２…砥石母材、３…接着剤、４…砥石チッ
プ。1 ... Whetstone, 2 ... Whetstone base material, 3 ... Adhesive, 4 ... Whetstone tip
Claims (2)
を介して砥石チップを固着してなる砥石の再生方法にお
いて、使用済み砥石の砥石母材を加熱して接着剤を軟化
させる加熱工程と、砥石母材の外周面から使用済みの砥
石チップと接着剤層を除去する除去工程と、前記除去工
程で除去しきれなかった砥石母材表面の残留接着剤をブ
ラスト加工により除去するブラスト加工工程と、ブラス
ト加工後の砥石母材の外周面に新たな砥石チップを固着
する固着工程からなることを特徴とする砥石の再生方
法。1. A method of reclaiming a grindstone in which a grindstone tip is fixed to an outer peripheral surface of a roughened grindstone base material with an adhesive, whereby the grindstone base material of a used grindstone is heated to soften the adhesive. Heating process, removing step to remove used grindstone chips and adhesive layer from the outer peripheral surface of the grindstone base material, and removing residual adhesive on the surface of the grindstone base material that could not be completely removed by the removing step by blasting A method of reclaiming a grindstone, comprising: a blasting step of: and a fixing step of fixing a new grindstone tip to an outer peripheral surface of the grindstone base material after the blasting.
て、前記砥石母材の当初の外周面の粗面化はブラスト加
工によるものであり、再生処理に伴う前記ブラスト加工
工程のブラスト加工条件を当初のブラスト加工条件と同
一にしたことを特徴とする砥石の再生方法。2. The method for reclaiming a grindstone according to claim 1, wherein the roughening of the initial outer peripheral surface of the grindstone base material is performed by blasting, and the blasting conditions of the blasting step associated with reclaiming are set. A method for reclaiming a whetstone, which is characterized in that the initial blasting conditions are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6249392A JPH08112768A (en) | 1994-10-14 | 1994-10-14 | Regenerating method for grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6249392A JPH08112768A (en) | 1994-10-14 | 1994-10-14 | Regenerating method for grinding wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08112768A true JPH08112768A (en) | 1996-05-07 |
Family
ID=17192318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6249392A Withdrawn JPH08112768A (en) | 1994-10-14 | 1994-10-14 | Regenerating method for grinding wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08112768A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002034468A1 (en) * | 2000-10-26 | 2002-05-02 | Noritake Co.,Limited | Method of regenerating grinding wheel |
| US6846233B2 (en) | 2002-02-12 | 2005-01-25 | Noritake Co., Limited | Segmental type grinding wheel |
| WO2017157789A1 (en) * | 2016-03-18 | 2017-09-21 | Thyssenkrupp Ag | Method for reusing an abrasive tool |
| CN111993300A (en) * | 2020-09-22 | 2020-11-27 | 苏州浩耐特磨具有限公司 | Abrasive layer separation device and method applied to abrasive grinding tool |
-
1994
- 1994-10-14 JP JP6249392A patent/JPH08112768A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002034468A1 (en) * | 2000-10-26 | 2002-05-02 | Noritake Co.,Limited | Method of regenerating grinding wheel |
| US6846233B2 (en) | 2002-02-12 | 2005-01-25 | Noritake Co., Limited | Segmental type grinding wheel |
| WO2017157789A1 (en) * | 2016-03-18 | 2017-09-21 | Thyssenkrupp Ag | Method for reusing an abrasive tool |
| DE102016105049B4 (en) * | 2016-03-18 | 2018-09-06 | Thyssenkrupp Ag | Method for reposting a grinding tool and wiederabregbares grinding tool this |
| CN108778628A (en) * | 2016-03-18 | 2018-11-09 | 蒂森克虏伯股份公司 | The method for reusing milling tool |
| CN111993300A (en) * | 2020-09-22 | 2020-11-27 | 苏州浩耐特磨具有限公司 | Abrasive layer separation device and method applied to abrasive grinding tool |
| CN111993300B (en) * | 2020-09-22 | 2021-08-10 | 苏州浩耐特磨具有限公司 | Abrasive layer separation device and method applied to abrasive grinding tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020115 |