JP2924305B2 - Water-permeable cup type whetstone - Google Patents

Water-permeable cup type whetstone

Info

Publication number
JP2924305B2
JP2924305B2 JP3152038A JP15203891A JP2924305B2 JP 2924305 B2 JP2924305 B2 JP 2924305B2 JP 3152038 A JP3152038 A JP 3152038A JP 15203891 A JP15203891 A JP 15203891A JP 2924305 B2 JP2924305 B2 JP 2924305B2
Authority
JP
Japan
Prior art keywords
grinding
base
layer
grinding fluid
grindstone
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.)
Expired - Lifetime
Application number
JP3152038A
Other languages
Japanese (ja)
Other versions
JPH0569339A (en
Inventor
哲 勝又
務 高橋
尚登 及川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP3152038A priority Critical patent/JP2924305B2/en
Publication of JPH0569339A publication Critical patent/JPH0569339A/en
Application granted granted Critical
Publication of JP2924305B2 publication Critical patent/JP2924305B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Polishing Bodies And Polishing Tools (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、各種被削材の平面研削
等に使用されるカップ型砥石に係わり、特に、砥粒層の
目詰まりや過熱を防ぐための改良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup-type grindstone used for surface grinding of various workpieces, and more particularly to an improvement for preventing clogging and overheating of an abrasive layer.

【0002】[0002]

【従来の技術】一般的なカップ型砥石は、カップ型の台
金(砥石基体)の周壁部の端面に一定厚さの砥粒層を形成
したものであり、前記台金の中心孔に研削盤の回転軸を
固定し、回転させることにより、砥粒層の端面で被削材
を研削する。
2. Description of the Related Art A general cup-type grindstone is one in which an abrasive layer having a constant thickness is formed on an end face of a peripheral wall portion of a cup-shaped base (grinding base), and a center hole of the base is ground. The work material is ground at the end surface of the abrasive grain layer by fixing and rotating the rotating shaft of the board.

【0003】[0003]

【発明が解決しようとする課題】しかし、上記のような
カップ型砥石では、研削につれ砥粒層が目詰まりするこ
とが避けられず、一定量の被削材を処理する毎に研削盤
を停止して、砥粒層の目詰まりを治すためのドレッシン
グを行なわねばならず、その分手間がかかる欠点を有し
ていた。また、重研削を行なう場合には、砥粒層が過熱
して被削材に焼き付く等の支障が生じることがあった。
However, in the cup-type grindstone as described above, it is inevitable that the abrasive layer is clogged with the grinding, and the grinder is stopped every time a fixed amount of work material is processed. Then, dressing must be performed to cure the clogging of the abrasive grain layer, which has the disadvantage of requiring much time. In addition, when heavy grinding is performed, problems such as overheating of the abrasive grain layer and seizure of the work material may occur.

【0004】[0004]

【課題を解決するための手段】本発明は上記課題を解決
するためになされたもので、カップ型の砥石基体と、こ
の砥石基体の周壁部端面に設けられた通水性を有する多
孔性砥粒層とを具備し、前記砥石基体の内部には空洞部
が形成されるとともに、砥石基体の外面にはこの空洞部
に連通する開口部が形成され、この開口部内には砥石基
体の回転につれ外部の空気を吸い込み空洞部内に導入す
る吸入羽根構造が設けられ、さらに、空洞部に連通し前
記砥石基体の端面に開口するとともにその途中で砥石基
体の内側に供給される研削液を前記空気と合流させ前記
端面から導出するガス通路が形成されていることを特徴
とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a cup-shaped grindstone substrate and a porous abrasive having water permeability provided on an end face of a peripheral wall portion of the grindstone substrate. And a cavity is formed inside the grindstone base, and an opening communicating with the cavity is formed on the outer surface of the grindstone base. Inside the opening, an external part is formed as the grindstone base rotates. A suction blade structure for sucking air and introducing the air into the cavity, further opening the end surface of the grinding wheel base which communicates with the cavity and joining the grinding fluid supplied to the inside of the grinding wheel base along the way with the air. The gas passage leading out from the end face is formed.

【0005】なお、前記砥石基体の端面と、前記多孔性
砥粒層との間には、通水性を有する研削液分散層が設け
られていてもよい。
[0005] A grinding fluid dispersion layer having water permeability may be provided between the end face of the grinding wheel base and the porous abrasive layer.

【0006】[0006]

【作用】本発明の通水性カップ型砥石では、砥石の回転
につれ砥石基体の外面に設けられた吸入羽根構造が外部
の空気を吸い込み、空洞部に導入する。導入された空気
は次にガス通路を通じて砥石基体の端面から導出される
が、その途中で、回転軸を通して砥石内側に供給される
研削液が前記空気と合流し、この空気とともに砥石基体
の端面から多孔性砥粒層に供給される。供給された研削
液および空気は多孔性砥粒層の内部を分散しつつ進行
し、研削面から放出されるため、その過程で多孔性砥粒
層は研削液および空気で冷却され、過熱が防止されると
ともに、研削面に付着する切粉が洗い流されて目詰まり
が防止できる。さらに、強制的に充分な量の研削液が研
削点に供給されるため、研削液による良好な潤滑状態が
形成され、研削抵抗の低減が図れ、深切込み等の重研削
が可能となるのみならず、良好な仕上げ面粗さが得られ
る。
In the water-permeable cup-type grindstone of the present invention, as the grindstone rotates, the suction blade structure provided on the outer surface of the grindstone base sucks in external air and introduces it into the cavity. The introduced air is then led out from the end face of the grinding wheel base through the gas passage.On the way, the grinding fluid supplied to the inside of the grinding wheel through the rotating shaft merges with the air, and along with the air, the grinding fluid flows from the end face of the grinding wheel base. It is supplied to the porous abrasive layer. Since the supplied grinding fluid and air travel while dispersing inside the porous abrasive layer and are released from the grinding surface, the porous abrasive layer is cooled by the grinding fluid and air in the process, preventing overheating. In addition, swarf adhering to the ground surface is washed away, so that clogging can be prevented. Furthermore, since a sufficient amount of grinding fluid is forcibly supplied to the grinding point, a good lubrication state is formed by the grinding fluid, the grinding resistance can be reduced, and heavy grinding such as deep cutting can be performed. And a good finished surface roughness is obtained.

【0007】[0007]

【実施例】以下、本発明に係わる通水性カップ型砥石を
具体的に説明する。図1ないし図3は本発明の一実施例
を示す図であり、図中符号1はカップ型の砥石基体、2
は砥石基体1の周壁部端面に固定された研削液分散層、
4は研削液分散層2の端面に固定された多孔性砥粒層で
ある。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a water-permeable cup type grindstone according to the present invention will be described in detail. 1 to 3 show one embodiment of the present invention. In the drawings, reference numeral 1 denotes a cup-shaped grinding wheel base, 2
Is a grinding fluid dispersion layer fixed to the peripheral wall end face of the grinding wheel base 1;
Reference numeral 4 denotes a porous abrasive layer fixed to the end surface of the grinding liquid dispersion layer 2.

【0008】砥石基体1の肩部の内部には、砥石基体1
の全周に亙って延びる円環状の空洞部6が形成されると
ともに、肩部の外周面には、空洞部6に連通する開口部
8が全周に亙って円環状に形成され、さらにこの開口部
8内には、周方向一定間隔毎に、板状の羽根10が砥石
基体1と一体的に多数形成されている。
[0008] Inside the shoulder portion of the grinding wheel base 1, the grinding wheel base 1
An annular cavity 6 extending over the entire circumference is formed, and an opening 8 communicating with the cavity 6 is formed in the outer peripheral surface of the shoulder in an annular shape over the entire circumference. Further, in the opening 8, a large number of plate-like blades 10 are formed integrally with the grindstone base 1 at regular intervals in the circumferential direction.

【0009】これら羽根10は、図3に示すように、全
て周壁部外周面の接線方向に対して一定角度づつ傾斜し
ており、図示の矢印方向へ砥石基体1が回転すると、砥
石基体1の内側に供給される研削液を吸い込んで空洞部
6内に強制的に導入するようになっている。
As shown in FIG. 3, the blades 10 are all inclined at a fixed angle with respect to the tangential direction of the outer peripheral surface of the peripheral wall portion. The grinding fluid supplied inside is sucked and forcedly introduced into the cavity 6.

【0010】また、砥石基体1の内部には、空洞部6か
ら肩部の内面に達するガス導入路(ガス通路の一部)12
が、周方向一定間隔毎に多数形成されている。さらに砥
石基体1の周壁部内には、砥石基体1の内周面に一端が
開口し、他端が周壁部の端面に開口するガス導出路(ガ
ス通路の一部)14が、図2に示すように周方向一定間
隔毎に多数形成されている。このガス導出路14の周壁
部内周面における開口位置は、回転軸Sの研削液噴出孔
Hから噴出される研削液の吹き付けられる位置に設定さ
れる。
Further, inside the grindstone base 1, a gas introduction passage (part of a gas passage) 12 extending from the cavity 6 to the inner surface of the shoulder.
Are formed at regular intervals in the circumferential direction. Further, in the peripheral wall portion of the grindstone base 1, a gas outlet path (a part of a gas passage) 14 having one end opened on the inner peripheral surface of the grindstone base 1 and the other end opened on the end surface of the peripheral wall portion is shown in FIG. Thus, a large number are formed at regular intervals in the circumferential direction. The opening position of the gas outlet passage 14 on the inner peripheral surface of the peripheral wall portion is set to a position at which the grinding fluid ejected from the grinding fluid ejection hole H of the rotating shaft S is blown.

【0011】この実施例における研削液分散層2は、図
4に示すように、内部に3次元網目構造をなす連通気孔
30が無方向的に形成された一定厚さの金属層である。
各連通気孔30は研削液分散層2の両面でそれぞれ開口
しており、これら連通気孔30を通じて無方向的に流体
を通すことができる。
The grinding fluid dispersion layer 2 in this embodiment is, as shown in FIG. 4, a metal layer having a constant thickness in which continuous air holes 30 having a three-dimensional network structure are formed in a non-directional manner.
Each of the communication holes 30 is open on both sides of the grinding fluid dispersion layer 2, and a fluid can flow through the communication holes 30 in a non-directional manner.

【0012】各連通気孔30の内壁面は、全面に亙って
耐熱被覆32により構成されている。この耐熱被覆32
は、Ni,Co,Cu等の比較的高融点の金属や合金、
あるいはアルミナ,マグネシア等のセラミックスで形成
されている。
The inner wall surface of each communication hole 30 is formed of a heat-resistant coating 32 over the entire surface. This heat-resistant coating 32
Are relatively high melting point metals and alloys such as Ni, Co, Cu, etc.
Alternatively, it is formed of ceramics such as alumina and magnesia.

【0013】各耐熱被覆32の周囲には、耐熱被覆32
より低融点の充填金属(あるいは樹脂)34が全域に亙
って満たされ、強度が確保されている。充填金属34の
材質としては、Al合金,Sn合金,Cu合金等が挙げ
られるが、融点および軽量化の点から特にAl合金が好
ましい。また充填樹脂34としてはポリイミド、エポキ
シ、フェノール等の樹脂が使用可能である。
Around each heat-resistant coating 32, a heat-resistant coating 32
The filling metal (or resin) 34 having a lower melting point is filled over the entire area, and the strength is secured. Examples of the material of the filling metal 34 include an Al alloy, a Sn alloy, and a Cu alloy, and an Al alloy is particularly preferable in terms of melting point and weight reduction. Further, as the filling resin 34, a resin such as polyimide, epoxy, or phenol can be used.

【0014】なお、耐熱被覆32が、NiあるいはNi
合金等のように酸に溶解しやすい金属からなり、充填金
属34がAl合金等の酸に溶けにくい金属で構成されて
いる場合には、連通気孔30内に硝酸などを通して耐熱
被覆32のみを溶解除去し、連通気孔30の内径を拡大
してもよい。
The heat-resistant coating 32 is made of Ni or Ni.
When the filler metal 34 is made of a metal that is easily soluble in an acid such as an alloy and the like, and the filling metal 34 is made of a metal that is hardly soluble in an acid such as an Al alloy, only the heat-resistant coating 32 is melted by passing nitric acid or the like into the communicating holes 30. It may be removed and the inner diameter of the continuous ventilation hole 30 may be enlarged.

【0015】一方、多孔性砥粒層4は、ダイヤモンドま
たはCBN等の超砥粒36を、Ni,Co,Cu等の金
属めっき相38中に多層状に分散して固定したものであ
る。超砥粒36の平均粒径と砥粒含有率、並びに多孔性
砥粒層4の厚さは、砥石用途に応じて適宜決定される。
On the other hand, the porous abrasive layer 4 is a layer in which superabrasives 36 such as diamond or CBN are dispersed and fixed in a metal plating phase 38 such as Ni, Co, or Cu. The average particle size and the abrasive content of the superabrasive grains 36 and the thickness of the porous abrasive layer 4 are appropriately determined depending on the use of the grindstone.

【0016】多孔性砥粒層4の内部には垂直な給液孔4
0が間隔を空けて多数形成され、個々の給液孔40の一
端は各連通気孔30のそれぞれと連通するとともに、他
端は多孔性砥粒層4の表面(研削面)で開口している。
A vertical liquid supply hole 4 is provided inside the porous abrasive layer 4.
A large number of zeros are formed at intervals, and one end of each liquid supply hole 40 communicates with each of the communication vents 30, and the other end is opened on the surface (ground surface) of the porous abrasive layer 4. .

【0017】なお、上記の研削液分散層2および多孔性
砥粒層4を形成するには、次のような方法が可能であ
る。まず、図5に示すような樹脂多孔質体42を用意す
る。この樹脂多孔質体42は、発泡剤を用いて樹脂を高
度に発泡させたもので、個々の繊維が無方向性の3次元
網目構造をなしている。
In order to form the above-mentioned grinding fluid dispersion layer 2 and porous abrasive grain layer 4, the following method is possible. First, a resin porous body 42 as shown in FIG. 5 is prepared. The resin porous body 42 is obtained by highly foaming a resin using a foaming agent, and each fiber has a nondirectional three-dimensional network structure.

【0018】次に、樹脂多孔質体42の繊維の全面に亙
って、耐熱被覆32をほぼ一定の厚さに形成する。耐熱
被覆32をNi,Co,Cu等からなる高融点金属また
はその合金で形成する場合には、無電解めっき法が容易
である。
Next, the heat-resistant coating 32 is formed to have a substantially constant thickness over the entire surface of the fiber of the resin porous body 42. When the heat-resistant coating 32 is formed of a high-melting-point metal such as Ni, Co, or Cu or an alloy thereof, the electroless plating method is easy.

【0019】一方、耐熱被覆32として、アルミナ,マ
グネシア,カルシア等のセラミックスを使用する場合に
は、これらの微粉末を水ガラス等に分散させ、この分散
液を樹脂多孔質体42に塗布し、乾燥固化する。この作
業を繰り返した後、焼結することにより、樹脂多孔質体
42が熱分解して除去されるととにもに、連通気孔30
が形成される。
On the other hand, when ceramics such as alumina, magnesia, and calcia are used as the heat-resistant coating 32, these fine powders are dispersed in water glass or the like, and this dispersion is applied to a resin porous body 42. Dry and solidify. After repeating this operation, by sintering, the resin porous body 42 is thermally decomposed and removed.
Is formed.

【0020】耐熱被覆32を形成した樹脂多孔質体42
に、充填金属34の溶湯を充填する。溶湯が十分に固化
したら、この板材の両面を研削し、連通気孔30の端部
を開口させ、研削液分散層2とする。
The resin porous body 42 having the heat-resistant coating 32 formed thereon
Then, the molten metal of the filling metal 34 is filled. When the molten metal is sufficiently solidified, both sides of this plate material are ground, and the end of the continuous ventilation hole 30 is opened to form the grinding liquid dispersion layer 2.

【0021】次いで、この研削液分散層2をめっき液に
浸漬し、裏面側から一定圧力で空気を流しつつ、研削液
分散層2の表面上に多孔性砥粒層4を形成する。する
と、めっき中には各連通気孔30の開口部から常に気泡
が発生するから、この気泡の通り道では金属析出が阻止
され、給液孔40が形成される。
Next, the grinding liquid dispersion layer 2 is immersed in a plating solution, and a porous abrasive layer 4 is formed on the surface of the grinding liquid dispersion layer 2 while flowing air at a constant pressure from the back side. Then, during plating, air bubbles are always generated from the openings of the respective communication holes 30, so that metal deposition is prevented in the passage of the air bubbles and the liquid supply holes 40 are formed.

【0022】上記構成からなる通水性カップ型砥石を使
用するには、図1に示すように給液手段を有する回転軸
Sに砥石基体1をナットNで固定する。この回転軸Sの
中心には給液路Kが形成されるとともに、砥石基体1の
内側に配置されるフランジ部Fには、給液路Kから放射
状に延びてフランジ部Fの外周面に開口する研削液噴出
孔Hが多数形成されている。
In order to use the water-permeable cup type grindstone having the above structure, the grindstone base 1 is fixed to a rotating shaft S having a liquid supply means with a nut N as shown in FIG. A liquid supply path K is formed at the center of the rotation axis S, and a flange portion F disposed inside the grindstone base 1 extends radially from the liquid supply path K and has an opening on the outer peripheral surface of the flange portion F. A large number of grinding fluid ejection holes H are formed.

【0023】次に、回転軸Sを回転させ、給液路Kを通
じて研削液噴出孔Hから研削液を噴出させつつ、砥粒層
4を被削材に当ててこれを研削する。すると、砥石基体
1の回転につれ、羽根10が外部の空気あるいは/およ
び研削液を吸い込み、空洞部6およびガス導入路12を
経て砥石基体1の内側に供給される。多孔性砥粒層4が
その全周に亙って被削材と接触するか、あるいはこれら
の間隙が僅かであれば、砥石基体1の内側は加圧され
て、空気はガス導出路14に流入する。この時、回転軸
Sを通じて研削液噴出孔Hから噴出する研削液の一部が
空気と合流してガス導出路14に流入し、研削液分散層
2に供給される。このため、研削液および空気は分散層
2の各連通気孔30を通じて平面方向にも広がりつつ、
さらに多孔性砥粒層4に導入され、その給液孔40を通
じて研削面から放出される。
Next, the rotating shaft S is rotated, and while the grinding fluid is ejected from the grinding fluid ejection hole H through the liquid supply passage K, the abrasive layer 4 is applied to the work material and ground. Then, as the grindstone base 1 rotates, the blade 10 sucks in external air and / or grinding fluid, and is supplied to the inside of the grindstone base 1 through the cavity 6 and the gas introduction path 12. If the porous abrasive layer 4 is in contact with the workpiece over its entire circumference, or if there is only a small gap between them, the inside of the grinding wheel base 1 is pressurized and air is supplied to the gas outlet 14. Inflow. At this time, a part of the grinding fluid ejected from the grinding fluid ejection hole H through the rotating shaft S merges with the air, flows into the gas outlet path 14, and is supplied to the grinding fluid dispersion layer 2. For this reason, the grinding fluid and the air spread in the plane direction through the respective communication holes 30 of the dispersion layer 2,
Further, it is introduced into the porous abrasive layer 4 and discharged from the ground surface through the liquid supply hole 40.

【0024】この過程で多孔性砥粒層4は研削液および
空気で冷却され、過熱が防止されるとともに、研削面に
付着した切粉が常に洗い流されて目詰まりが防止でき
る。したがって、目詰まりを解消するために研削を停止
する回数が少なくて済み、砥粒層4の過熱による被削材
との焼き付きも生じないし、砥粒層4の熱膨張による研
削精度の低下も防ぐことができる。また、強制的に充分
な量の研削液が研削点に供給されるため、研削液による
良好な潤滑状態が形成され、研削抵抗の低減が図れ、深
切込み等の重研削が可能になるのみならず、被削材の仕
上げ面粗さを向上できる。
In this process, the porous abrasive layer 4 is cooled by the grinding fluid and air, so that overheating is prevented, and chips adhering to the ground surface are constantly washed away, thereby preventing clogging. Therefore, the number of times of stopping the grinding for eliminating the clogging may be reduced, the seizure of the abrasive layer 4 with the work material due to overheating does not occur, and the reduction of the grinding accuracy due to the thermal expansion of the abrasive layer 4 is also prevented. be able to. In addition, since a sufficient amount of grinding fluid is forcibly supplied to the grinding point, a good lubrication state is formed by the grinding fluid, the grinding resistance can be reduced, and heavy grinding such as deep cutting can be performed. And the finished surface roughness of the work material can be improved.

【0025】また、この実施例では、個々の給液孔40
の内径が多孔性砥粒層4の厚さ方向に亙って一定である
から、研削につれて多孔性砥粒層4が摩耗しても給液孔
40の口径は変化しない。このため、給液流量が変わっ
て研削条件に影響を与えるおそれがない。
In this embodiment, the individual liquid supply holes 40
Is constant over the thickness direction of the porous abrasive layer 4, so that the diameter of the liquid supply hole 40 does not change even if the porous abrasive layer 4 wears out during grinding. For this reason, there is no possibility that the flow rate of the liquid supply changes and affects the grinding conditions.

【0026】また、研削液分散層2の内部に、3次元網
目構造をなす連通気孔30がくまなく形成されているた
め、研削液分散層2がクッション性を有する。よって多
孔性砥粒層4の被削材への当たりが柔らかで、被削材へ
の超砥粒36の過剰な食い込みを防いで、仕上げ面粗さ
が向上できる。
Further, since the continuous ventilation holes 30 having a three-dimensional network structure are formed throughout the inside of the grinding fluid dispersion layer 2, the grinding fluid dispersion layer 2 has a cushioning property. Therefore, the contact of the porous abrasive layer 4 with the work material is soft, and the super abrasive grains 36 are prevented from excessively biting into the work material, so that the finished surface roughness can be improved.

【0027】なお、多孔性砥粒層4としては、図6ある
いは図7に示すような構造も可能である。
The porous abrasive layer 4 may have a structure as shown in FIG. 6 or FIG.

【0028】図6の例では、図5に示した樹脂多孔質体
42の内部に砥粒36を分散させつつ金属めっき層38
を析出させ、樹脂多孔質体42の内部に満たした後、全
体を加熱して多孔質体42を除去し、その除去跡に連通
気孔30を形成したものである。この例では、砥粒層4
の内部に3次元網目状構造をなす連通気孔30が全域に
亙って無方向的に形成されるため、内周側から砥粒層4
に供給された研削液は砥粒層4の内部で分散されつつ研
削面に達する。したがって、前記実施例のような研削液
分散層2を設けなくてもよく、図6に示すように砥石基
体1の外周面に直接形成してもよい。
In the example of FIG. 6, the metal plating layer 38 is dispersed while the abrasive grains 36 are dispersed in the resin porous body 42 shown in FIG.
Is deposited and filled in the resin porous body 42, and then the whole is heated to remove the porous body 42, and the communicating vent 30 is formed in the trace of the removal. In this example, the abrasive layer 4
Since the continuous ventilation holes 30 having a three-dimensional network structure are formed in a non-directional manner throughout the inside, the abrasive layer 4 is formed from the inner peripheral side.
Is supplied to the grinding surface while being dispersed inside the abrasive layer 4. Therefore, it is not necessary to provide the grinding fluid dispersion layer 2 as in the above embodiment, and it may be formed directly on the outer peripheral surface of the grinding wheel base 1 as shown in FIG.

【0029】一方、図7の例は、樹脂多孔質体42の表
面に無電解めっき法により金属被覆層を形成した後、こ
の金属被覆層を陰極に接続して、砥粒36を分散させた
めっき液内で対向配置した陽極との間で通電し、電解め
っきを行うことにより、各金属被覆層の表面に、金属め
っき相38により砥粒36を固着させたものである。こ
の例によれば、砥粒層4に形成される連通気孔30が大
きく、気孔率が極めて大きいため、前記各実施例よりも
いっそう目詰まりや過熱が生じにくい。
On the other hand, in the example of FIG. 7, after forming a metal coating layer on the surface of the resin porous body 42 by electroless plating, the metal coating layer is connected to a cathode to disperse the abrasive grains 36. The abrasive grains 36 are fixed to the surface of each metal coating layer by a metal plating phase 38 by applying an electric current between the anode and the anode arranged opposite to each other in the plating solution to perform electrolytic plating. According to this example, since the continuous ventilation holes 30 formed in the abrasive layer 4 are large and the porosity is extremely large, clogging and overheating are less likely to occur than in the above-described embodiments.

【0030】さらに、図8は本発明の他の実施例を示す
縦断面図である。この例では、砥石基体1の周壁部内に
円環状の空洞部16が形成され、この空洞部16から周
壁部端面に達するガス通路18が周方向一定間隔毎に多
数形成されている。また、砥石基体1の周壁部の内周面
には、前記空洞部16に達する研削液導入孔20が周方
向一定間隔毎に多数形成されている。
FIG. 8 is a longitudinal sectional view showing another embodiment of the present invention. In this example, an annular cavity 16 is formed in the peripheral wall of the grindstone base 1, and a large number of gas passages 18 extending from the cavity 16 to the peripheral wall end face are formed at regular intervals in the circumferential direction. On the inner peripheral surface of the peripheral wall portion of the grindstone base 1, a large number of grinding fluid introduction holes 20 reaching the hollow portion 16 are formed at regular intervals in the circumferential direction.

【0031】これら研削液導入孔20は、空洞部16内
におけるガスの流れ方向に対して鋭角をなすように形成
されることが望ましく、これにより回転軸Sを通じて研
削液噴出孔Hから噴出する研削液の一部は、空洞部16
内で空気と合流してガス通路18に流入し、多孔性砥粒
層4に供給される。なお、この例では研削液分散層を設
けていない。
It is desirable that these grinding fluid introduction holes 20 are formed so as to form an acute angle with respect to the gas flow direction in the hollow portion 16, whereby the grinding fluid ejected from the grinding fluid ejection hole H through the rotation axis S is formed. A part of the liquid is
The air merges with the air and flows into the gas passage 18 to be supplied to the porous abrasive layer 4. In this example, no grinding fluid dispersion layer was provided.

【0032】この例によっても前記実施例と同様の効果
が得られるうえ、回転中に砥石基体1の肩部に研削液を
吹きかけることにより、回転軸Sからではなしに外部か
ら直接、研削液を多孔性砥粒層4に供給することもでき
る。
According to this embodiment, the same effects as those of the above embodiment can be obtained. In addition, the grinding fluid is sprayed on the shoulder portion of the grinding wheel base 1 during the rotation, so that the grinding fluid is directly supplied from outside, not from the rotation axis S. It can also be supplied to the porous abrasive layer 4.

【0033】なお、本発明は上記実施例にのみ限定され
るものではなく、例えば砥石基体1の形状や羽根10の
形状等は必要に応じて適宜変更してよい。また、多孔性
砥粒層4としては、前述した構造のものに限らず、予め
金属めっきした超砥粒を使用して通常の電着を行なうこ
とにより、砥粒同士の間に互いに一部連通する気孔を形
成した砥粒層も使用できる。
It should be noted that the present invention is not limited only to the above embodiment, and for example, the shape of the grindstone base 1 and the shape of the blades 10 may be changed as necessary. Further, the porous abrasive layer 4 is not limited to the one having the above-mentioned structure, and a part of the abrasive particles is communicated with each other by performing normal electrodeposition using superabrasive particles plated in advance with metal. An abrasive layer having pores formed therein can also be used.

【0034】[0034]

【発明の効果】以上説明したように、本発明に係わる通
水性カップ型砥石によれば、砥石の回転につれ砥石基体
の外周面に設けられた吸入羽根構造が砥石外部の空気を
吸い込み、空洞部に導入する。導入された空気は次にガ
ス通路を通じて砥石基体の端面から導出されるが、その
途中で、回転軸を通して砥石内側に供給される研削液が
前記空気と合流し、この空気とともに砥石基体の端面か
ら多孔性砥粒層に供給される。供給された研削液および
空気は多孔性砥粒層の内部を分散しつつ進行し、研削面
から放出されるため、その過程で多孔性砥粒層は研削液
および空気で冷却され、過熱が防止されるとともに、研
削面に付着する切粉が洗い流されて目詰まりが防止でき
る。また、研削点に充分な量の研削液が強制的に供給さ
れるため、重研削が可能となる他に、被削材の仕上げ面
粗さの向上も可能となる。
As described above, according to the water-permeable cup-type grindstone according to the present invention, as the grindstone rotates, the suction blade structure provided on the outer peripheral surface of the grindstone base sucks air outside the grindstone, and the cavity portion is formed. To be introduced. The introduced air is then led out from the end face of the grinding wheel base through the gas passage.On the way, the grinding fluid supplied to the inside of the grinding wheel through the rotating shaft merges with the air, and along with the air, the grinding fluid flows from the end face of the grinding wheel base. It is supplied to the porous abrasive layer. Since the supplied grinding fluid and air travel while dispersing inside the porous abrasive layer and are released from the grinding surface, the porous abrasive layer is cooled by the grinding fluid and air in the process, preventing overheating. In addition, swarf adhering to the ground surface is washed away, so that clogging can be prevented. In addition, since a sufficient amount of grinding fluid is forcibly supplied to the grinding point, heavy grinding can be performed and the finished surface roughness of the work material can be improved.

【0035】一方、砥石基体と多孔性砥粒層との間に研
削液分散層を設けた場合には、この多孔性分散層によ
り、砥石基体の端面から流出する研削液を研削面と平行
な方向へ効果的に分散させ、砥粒層の広い範囲に研削液
を流通させることが可能である。
On the other hand, when a grinding fluid dispersion layer is provided between the grinding wheel base and the porous abrasive layer, the grinding fluid flowing out of the end face of the grinding wheel base is parallelized by the porous dispersion layer. It is possible to effectively disperse in the direction and to distribute the grinding fluid over a wide area of the abrasive layer.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係わる通水性カップ型砥石の一実施例
を示す縦断面図である。
FIG. 1 is a longitudinal sectional view showing one embodiment of a water-permeable cup-type grindstone according to the present invention.

【図2】図1のII−II線視断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.

【図3】図1のIII−III線に沿った断面図である。FIG. 3 is a sectional view taken along the line III-III in FIG. 1;

【図4】同砥石の砥粒層および研削液分散層の断面拡大
図である。
FIG. 4 is an enlarged sectional view of an abrasive grain layer and a grinding fluid dispersion layer of the grinding wheel.

【図5】同砥石の製造に使用される樹脂多孔質体を示す
拡大図である。
FIG. 5 is an enlarged view showing a resin porous body used for manufacturing the grinding wheel.

【図6】本発明の第2実施例の多孔性砥粒層を示す断面
拡大図である。
FIG. 6 is an enlarged sectional view showing a porous abrasive layer according to a second embodiment of the present invention.

【図7】本発明の第3実施例の多孔性砥粒層を示す断面
拡大図である。
FIG. 7 is an enlarged sectional view showing a porous abrasive grain layer according to a third embodiment of the present invention.

【図8】本発明の第4実施例の通水性カップ型砥石を示
す縦断面図である。
FIG. 8 is a longitudinal sectional view showing a water-permeable cup-type grindstone according to a fourth embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 砥石基体 2 研削液分散層 4 多孔性砥粒層 6 空洞部 8 開口部 10 羽根(吸入羽根構造) 12 ガス導入路(ガス通路の一部) 14 ガス導出路(ガス通路の一部) 16 空洞部 18 ガス通路 20 研削液導入孔 30 連通気孔 32 耐熱被覆 34 金属充填層 36 超砥粒 38 金属めっき相 40 給液孔 42 樹脂多孔質体 DESCRIPTION OF SYMBOLS 1 Whetstone base 2 Grinding fluid dispersion layer 4 Porous abrasive layer 6 Cavity 8 Opening 10 Blade (suction blade structure) 12 Gas introduction path (part of gas passage) 14 Gas outlet path (part of gas passage) 16 Cavity 18 Gas passage 20 Grinding fluid introduction hole 30 Continuous ventilation hole 32 Heat resistant coating 34 Metal filling layer 36 Super abrasive 38 Metal plating phase 40 Liquid supply hole 42 Resin porous body

フロントページの続き (56)参考文献 実開 昭62−156465(JP,U) (58)調査した分野(Int.Cl.6,DB名) B24D 7/10 B24D 3/10 B24D 7/00 Continuation of the front page (56) References Japanese Utility Model 62-156465 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) B24D 7/10 B24D 3/10 B24D 7/00

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 カップ型の砥石基体と、この砥石基体の
周壁部端面に設けられた通水性を有する多孔性砥粒層と
を具備し、前記砥石基体の内部には空洞部が形成される
とともに、砥石基体の外面にはこの空洞部に連通する開
口部が形成され、この開口部内には砥石基体の回転につ
れ外部の空気を吸い込み空洞部内に導入する吸入羽根構
造が設けられ、さらに、空洞部に連通し前記砥石基体の
端面に開口するとともにその途中で砥石基体の内側に供
給される研削液を前記空気と合流させ前記端面から導出
するガス通路が形成されていることを特徴とする通水性
カップ型砥石。
1. A grindstone base having a cup shape, and a porous abrasive layer having water permeability provided on an end face of a peripheral wall portion of the grindstone base, and a hollow portion is formed inside the grindstone base. At the same time, an opening communicating with the cavity is formed on the outer surface of the grindstone base, and a suction blade structure for sucking external air and introducing into the cavity as the grindstone base rotates is provided in the opening. And a gas passage which is opened to the end face of the grinding wheel base and is joined with the air on the way to join the grinding fluid to the inside of the grinding base, and is derived from the end face. Aqueous cup-type whetstone.
【請求項2】 前記砥石基体の端面と、前記多孔性砥粒
層との間には、通水性を有する研削液分散層が設けられ
ていることを特徴とする請求項1記載の通水性カップ型
砥石。
2. The water-permeable cup according to claim 1, wherein a grinding fluid dispersion layer having water permeability is provided between an end face of the grinding wheel base and the porous abrasive layer. Mold whetstone.
JP3152038A 1991-06-24 1991-06-24 Water-permeable cup type whetstone Expired - Lifetime JP2924305B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3152038A JP2924305B2 (en) 1991-06-24 1991-06-24 Water-permeable cup type whetstone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3152038A JP2924305B2 (en) 1991-06-24 1991-06-24 Water-permeable cup type whetstone

Publications (2)

Publication Number Publication Date
JPH0569339A JPH0569339A (en) 1993-03-23
JP2924305B2 true JP2924305B2 (en) 1999-07-26

Family

ID=15531701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3152038A Expired - Lifetime JP2924305B2 (en) 1991-06-24 1991-06-24 Water-permeable cup type whetstone

Country Status (1)

Country Link
JP (1) JP2924305B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003103469A (en) * 2001-09-27 2003-04-08 Noritake Super Abrasive:Kk Straight cup grinding wheel
JP4266579B2 (en) 2002-06-28 2009-05-20 株式会社ノリタケカンパニーリミテド Polishing body and method for producing the same
JP3978118B2 (en) * 2002-11-19 2007-09-19 株式会社岡本工作機械製作所 Grinding head structure with cup wheel type grindstone
JP4699813B2 (en) * 2005-06-08 2011-06-15 新日本工機株式会社 Rotating tool
JP5689596B2 (en) * 2009-10-28 2015-03-25 株式会社ディスコ Grinding equipment
CN102909666B (en) * 2012-11-20 2014-09-24 无锡威孚精密机械制造有限责任公司 Forced cooling type vertical spring grinding machine grinding wheel device
JP6286196B2 (en) * 2013-11-29 2018-02-28 株式会社ナノテム Grinding wheel and grinding apparatus using the same
CN105563361A (en) * 2015-12-09 2016-05-11 张嵩 Grinding wheel
CN109483418B (en) * 2018-12-28 2023-11-17 西安增材制造国家研究院有限公司 Metal-based micro-lubrication grinding wheel and manufacturing method thereof

Also Published As

Publication number Publication date
JPH0569339A (en) 1993-03-23

Similar Documents

Publication Publication Date Title
JP5105491B2 (en) Patterned polishing tools
US5993297A (en) Superabrasive grinding wheel with integral coolant passage
US20150290771A1 (en) Abrasive article and method for making the same
WO1998014307A1 (en) Superabrasive tool and method of its manufacture
JP2924305B2 (en) Water-permeable cup type whetstone
US5127924A (en) Hard particle coated grinding wheel
EP1100653B1 (en) Rotary dressing tool containing brazed diamond layer
JP4746007B2 (en) Grinding tool, grinding method and grinding system
JPH0569338A (en) Water permeable cup type grinding wheel
JP2929772B2 (en) Water-permeable straight whetstone
JP2976502B2 (en) Whetstone having liquid supply means and method of manufacturing the same
JP2000326234A (en) Super-abrasive grain wheel for deburring
US20020173247A1 (en) Machining device and methods
CN112620633A (en) Surface treatment process for powder metallurgy part
JPS63283866A (en) Superabrasive grain cutting grindstone
JPH11235670A (en) Grinding liquid supplying method for grinding wheel and its grinding wheel
JP2004268238A (en) Electrodeposition tool and its manufacturing method
JP3151705B2 (en) Structure of porous diamond cutting blade and method of manufacturing the same
JP2000084831A (en) Dressing device, polishing device using it, and cmp device
JP3390137B2 (en) A method for manufacturing a superabrasive grain in which dimples are scattered on an outer peripheral surface.
JP2019104079A (en) Metal blade, cutting processing device and manufacturing method for metal blade
JPH0482669A (en) Grindwheel and grinding method using same
JP2641438B2 (en) Centrifugal firing method of metal whetstone with porous part
JP2765172B2 (en) Porous multilayer electrodeposited grinding wheel and method for producing the same
JPH0531674A (en) Water permeable grinding wheel and manufacture thereof

Legal Events

Date Code Title Description
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 19990406