JPS62246474A - Manufacture of super abrasive grain grindstone for mirror-like surface finishing - Google Patents

Manufacture of super abrasive grain grindstone for mirror-like surface finishing

Info

Publication number
JPS62246474A
JPS62246474A JP8766486A JP8766486A JPS62246474A JP S62246474 A JPS62246474 A JP S62246474A JP 8766486 A JP8766486 A JP 8766486A JP 8766486 A JP8766486 A JP 8766486A JP S62246474 A JPS62246474 A JP S62246474A
Authority
JP
Japan
Prior art keywords
grindstone
diamond
abrasive
powder
abrasive grain
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
Application number
JP8766486A
Other languages
Japanese (ja)
Inventor
Masanori Yoshikawa
吉川 昌範
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.)
Goei Seisakusyo Co Ltd
Original Assignee
Goei Seisakusyo Co Ltd
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 Goei Seisakusyo Co Ltd filed Critical Goei Seisakusyo Co Ltd
Priority to JP8766486A priority Critical patent/JPS62246474A/en
Publication of JPS62246474A publication Critical patent/JPS62246474A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a grindstone which can do finishing with flatness of high degree and without producing flaws on the surface of a work piece by using the manufacturing method of mixing abrasive grains of diamond or the like with an abrasive support such as iron powder, copper powder or the like and a bonding material such as phenol resin or the like and forming under pressure and caking. CONSTITUTION:First, copper powder is added and mixed with liquid phenol resin and then diamond grains are annexed and further is added powder phenol resin, and after mixing them well, the mixture is formed under pressure by means of dies and then is hot-baked. The grindstone produced under this manufacture has the structure wherein diamond grains 1 are scattered around copper powders 2 and in contact with them and blow holes 3 are mingled at an appropriate proportion, the state of which is bonded by means of phenol resin 4. When the grindstone is used to finish a specular face, jutting diamond grains are embedded with plasticity into metal powders which are abrasive grain support, and diamond grain cutting blades are almost evenly arranged, so that deep cutting flaws can not be produced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は焼入鋼などの高硬度合金材料や、ガラス、セラ
ミックス、超硬合金などの高硬度非金属材などの高硬度
材料を平面度、仕上げ面あらさの極めて高い鏡面に仕上
げる鏡面仕上げ用超砥粒砥石の製造法に関するものであ
る。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention is capable of flattening high-hardness materials such as high-hardness alloy materials such as hardened steel, and high-hardness nonmetallic materials such as glass, ceramics, and cemented carbide. , relates to a method for manufacturing a superabrasive grindstone for mirror finishing that produces a mirror finish with extremely high surface roughness.

〔従来の技術〕[Conventional technology]

従来、高硬度材料を鏡面仕上げにする砥石には、ダイヤ
モンド砥石或いは立方晶窒化ほう素砥石として使用され
ているメタルポンド砥石、レジノイドボンド砥石及びゴ
ム砥石などが知られている。
Conventionally, known grindstones for mirror-finishing high-hardness materials include diamond grindstones, metal pound grindstones used as cubic boron nitride grindstones, resinoid bond grindstones, and rubber grindstones.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、ダイヤモンド砥石或いは立方晶窒化ほう
素砥石として使用されているメタルボンド砥石及びレジ
ノイドボンド砥石では、砥石に気孔がないことから切屑
の砥石面への目詰まりが著しく、砥石面に目詰まりした
切屑と仕上げを行うべき工作物材料表面との間でかじり
が生じ、該工作物材料表面に深い疵を生成させやすいと
いう問題点があった。また、ゴム砥石のような弾性砥石
では結合剤としての剛性が不足するために切れ味が劣り
、且つ砥石面自身の平面度を維持することが困難であっ
て、工作物材料表面を平面度の高い仕上面にすることが
できなかった。
However, metal bonded grinding wheels and resinoid bonded grinding wheels used as diamond grinding wheels or cubic boron nitride grinding wheels have no pores in the grinding wheels, so chips can clog the grinding wheel surface significantly. There is a problem in that galling occurs between the surface of the workpiece and the surface of the workpiece to be finished, and deep scratches are likely to be formed on the surface of the workpiece. In addition, elastic grinding wheels such as rubber grinding wheels have poor sharpness due to lack of rigidity as a binder, and it is difficult to maintain the flatness of the grinding wheel surface itself. It was not possible to achieve a finished surface.

本発明は上記の点に鑑み創案されたもので、工作物材料
表面に深い疵を生成させることがないと共に、平面度の
高い仕上面を得ることができる鏡面仕上げ用超砥粒砥石
の製造法を提供するにある。
The present invention was devised in view of the above points, and is a method for manufacturing a super-abrasive grindstone for mirror finishing, which does not cause deep scratches on the surface of the workpiece material and can provide a finished surface with high flatness. is to provide.

〔問題点を解決するための手段及びその作用〕上記の問
題点を解決するため、本発明においては、砥粒に砥粒保
持体及び結合剤を混和して加圧成形し、該成形物を固化
させて製造することを特徴とする。
[Means for solving the problems and their effects] In order to solve the above problems, in the present invention, abrasive grains are mixed with an abrasive grain holder and a binder, and the molded product is molded under pressure. It is characterized by being manufactured by solidifying it.

前記砥粒はダイヤモンド或いは立方晶窒化ほう素であれ
ば好適である。
The abrasive grains are preferably diamond or cubic boron nitride.

前記砥粒保持体は鉄粉、銅粉、アルミニウム粉。The abrasive grain holder is iron powder, copper powder, or aluminum powder.

或いは錫粉であれば好適である。Alternatively, tin powder is suitable.

前記結合剤は170〜230℃の温度で硬化させるフェ
ノール樹脂であるか、常温で硬化させるエポキシ樹脂と
硬化剤であれば好適である。
The binder is preferably a phenol resin that is cured at a temperature of 170 to 230°C, or an epoxy resin and a curing agent that is cured at room temperature.

上記製造法により鏡面仕上げ用超砥粒砥石を製造すれば
、砥粒保持体に砥粒が塑性的に埋め込まれ砥粒の切刃が
一平面上に揃うと共に気孔が20〜40%含まれるため
脱落砥粒や切屑等が気孔内に侵入するので、工作物材料
表面に深い疵を生成させる惧れがないと共に、平面度の
高い仕上面を得ることができる。
If a super-abrasive grindstone for mirror finishing is manufactured using the above manufacturing method, the abrasive grains will be plastically embedded in the abrasive grain holder, the cutting edges of the abrasive grains will be aligned on one plane, and 20 to 40% of pores will be included. Since fallen abrasive grains, chips, etc. enter the pores, there is no risk of forming deep scratches on the surface of the workpiece material, and a finished surface with high flatness can be obtained.

〔実施例〕〔Example〕

以下本発明の実施例について詳細に説明する。 Examples of the present invention will be described in detail below.

第1実施例の砥粒、砥粒保持体及び結合剤の配合割合を
示す。
The blending ratios of abrasive grains, abrasive grain holders, and binders in the first example are shown.

砥粒     ダイヤモンド粒   30g砥粒保持体
  銅粉        85g結合剤    液状フ
ェノール樹脂  5g粉末フェノール樹脂  5g 第1実施例の鏡面仕上げ用超砥粒砥石は次のようにして
製造される。まず銅粉に液状フェノール樹脂を加えて混
和し、これにダイヤモンド粒を添加し、更に粉末フェノ
ール樹脂を加えてよく混和し、この混和物を所要形状の
空所をもつダイスで約200krf/calの圧力で加
圧成型し、この成型物を230℃で20分間加熱焼成し
て製造する。
Abrasive grains Diamond grains 30g Abrasive grain holder Copper powder 85g Binder Liquid phenolic resin 5g Powdered phenolic resin 5g The superabrasive grindstone for mirror finishing of the first example is manufactured as follows. First, liquid phenolic resin is added to copper powder and mixed, diamond grains are added to this, powdered phenolic resin is added and mixed well, and this mixture is passed through a die with a cavity of the desired shape at a rate of about 200krf/cal. The molded product is manufactured by pressure molding and baking the molded product at 230° C. for 20 minutes.

この製造法によって製造された砥石は第1図に示すよう
な構造となる。即ち、ダイヤモンド粒1は銅粉2の周囲
に該銅粉2と接触して散在し、適当な割合で気孔3が混
在する状態にフェノール樹脂4で結合される。
A grindstone manufactured by this manufacturing method has a structure as shown in FIG. That is, the diamond grains 1 are scattered around the copper powder 2 in contact with the copper powder 2, and are bonded with the phenol resin 4 in a state in which pores 3 are mixed at an appropriate ratio.

製造法における成型物の加熱はフェノール樹脂を固化さ
せるものであるから、適度な温度に選定する必要がある
。砥石に敏速な切削性を与える場合には加熱温度を高く
230℃にし、砥石に高寿命を与える場合には加熱温度
を低く170℃に選定するとよい。いずれの場合も、こ
の加熱温度は低いので、砥粒保持体の金属粉を溶解する
ことなく、そのままの形で砥石中に残存させる。この金
・属粉はいわゆるメタルボンド砥石のように結合剤とし
ての作用をするのでなく、結合剤によってその周囲に結
合されたダイヤモンド粒の保持体としての作用をする。
Since the heating of the molded product in the manufacturing method solidifies the phenolic resin, it is necessary to select an appropriate temperature. In order to provide the grindstone with quick cutting performance, it is preferable to set the heating temperature to a high value of 230°C, and to provide the grindstone with a long service life, the heating temperature may be selected as low as 170°C. In either case, since the heating temperature is low, the metal powder in the abrasive grain holder is not dissolved and remains in the grindstone as it is. This metal/metal powder does not act as a binder like a so-called metal bond grindstone, but acts as a holder for the diamond grains bound around it by the binder.

また、この砥石は鏡面仕上げする時の金属粉の作用に特
徴がある。砥石に加工圧が加わると平均ダイヤモンド粒
切刃面より突出したダイヤモンド粒はその保持体である
金属粉に塑性的に埋め込まれ、ダイヤモンド粒切刃はほ
ぼ一平面上に揃い、一様卒切削を行うから深い切削疵を
生ずることがない、更に、熱伝導率及び熱容量の大きな
金属粉を混在させたので、工作物表面を切削することに
よって生ず・る加工熱による工作物表面の温度上昇が阻
止され、いわゆる加工変質層が生成しないことから良質
の仕上面が得られる。
Additionally, this whetstone is characterized by the action of metal powder when creating a mirror finish. When processing pressure is applied to the grinding wheel, the diamond grains that protrude from the average diamond grain cutting edge surface are plastically embedded in the metal powder that holds them, and the diamond grain cutting edges are aligned almost on one plane, allowing uniform grain cutting. Because of the cutting process, deep cutting scratches do not occur.Furthermore, since metal powder with high thermal conductivity and heat capacity is mixed, the temperature of the workpiece surface does not rise due to machining heat generated by cutting the workpiece surface. This prevents the formation of a so-called process-affected layer, resulting in a high-quality finished surface.

また、この砥石は気孔を多くもち、この気孔が工作物表
面を鏡面に仕上げることに有効に作用する。即ち、切削
加工時に生ずる微細な切屑、外部から混入するほこり、
脱落砥粒などが砥石と工作物との間に介入しても、それ
らは直ちに気孔中に侵入するので、大きな切削疵を生ず
ることがなく平滑な鏡面が得られる。
In addition, this grindstone has many pores, and these pores effectively work to finish the surface of the workpiece into a mirror finish. In other words, fine chips generated during cutting, dust mixed in from the outside,
Even if fallen abrasive grains etc. intervene between the grinding wheel and the workpiece, they immediately enter the pores, so a smooth mirror surface can be obtained without causing large cutting flaws.

次に、本実施例の砥石の気孔率、硬さ、及び曲げ強度を
測定した結果を第2図及び第3Mに示す。
Next, the results of measuring the porosity, hardness, and bending strength of the grindstone of this example are shown in FIGS. 2 and 3M.

第2図はフェノール樹脂の策との関係で、硬さ及び曲げ
強度はフェノール樹脂量が多いほどその値が大きくなり
、気孔率はフェノール樹脂量が増るほど小さくなってい
る。しかし、いずれの場合も気孔率は20〜40%にな
っている。第3図はダイヤモンド粒の大きさとの関係で
、硬さ及び曲げ強度はダイヤモンド粒の大きさが大きい
ほどその値が小さくなり、気孔率はほぼ横ばいで30〜
40%を示している。
FIG. 2 shows the relationship with the phenol resin, and the hardness and bending strength increase as the amount of phenol resin increases, and the porosity decreases as the amount of phenol resin increases. However, in both cases, the porosity is 20 to 40%. Figure 3 shows the relationship with the size of the diamond grains. The larger the diamond grain size, the smaller the values of hardness and bending strength, and the porosity remains almost constant at 30~30.
It shows 40%.

以上のような製造法によって得られたダイヤモンド砥石
は焼入鋼などの高硬度合金材料やガラス。
Diamond whetstones obtained using the above manufacturing method can be made of high-hardness alloy materials such as hardened steel or glass.

セラミックス、超硬合金などの高硬度非金属材料などの
高硬度材料を平面度及び仕上面あらさの掻めて高い鏡面
に仕上げる砥石に適している。
Suitable for use as a grindstone for polishing high-hardness materials such as ceramics, cemented carbide, and other hard non-metallic materials to a mirror-like surface with excellent flatness and surface roughness.

次に第2実施例について説明する。第2実施例の第1実
施例との差異は結合剤にフェノール樹脂の代わりにエポ
キシ樹脂と硬化剤を用いたところに特徴がある。即ち、
第2実施例の砥粒、砥粒保持体及び結合剤の配合割合は
次の如くである。
Next, a second embodiment will be explained. The difference between the second embodiment and the first embodiment is that an epoxy resin and a curing agent are used as the binder instead of a phenol resin. That is,
The blending ratios of the abrasive grains, abrasive grain holder, and binder in the second example are as follows.

砥粒     ダイヤモンド粒  30g砥粒保持体 
 アルミニウム粉  25[結合剤    エポキシ樹
脂    8g硬化剤       8g 第2実施例の鏡面仕上げ用超砥粒砥石は次のようにして
製造される。まず、アルミニウム粉にエポキシ樹脂を加
えて混和し、これにダイヤモンド粒を添加し、更に硬化
剤を加えてよく混和し、この混和物を所要形状の空所を
もつダイスで約100kgf/cdの圧力で加圧成型し
、この成型物を放置して硬化させ製造する。この製造法
によって製造された砥石は第1図とほぼ同様な構造とな
る。
Abrasive grain Diamond grain 30g abrasive grain holder
Aluminum powder 25 [Binder: Epoxy resin: 8g Hardening agent: 8g The superabrasive grindstone for mirror finishing of the second embodiment is manufactured as follows. First, epoxy resin is added to aluminum powder and mixed, diamond particles are added to this, a hardening agent is added and mixed well, and this mixture is passed through a die with a cavity of the desired shape at a pressure of approximately 100 kgf/cd. The product is manufactured by pressure molding and leaving the molded product to harden. A grindstone manufactured by this manufacturing method has a structure substantially similar to that shown in FIG.

即ち、ダイヤモンド粒はアルミニウム粉の周囲に該アル
ミニウム粉と接触して散在し、適当な割合で気孔が混在
する状態にエポキシ樹脂と硬化剤とによって結合される
That is, the diamond grains are scattered around the aluminum powder in contact with the aluminum powder, and are bonded by the epoxy resin and the hardening agent in a state in which pores are mixed at an appropriate ratio.

従って、第2実施例の砥石も第1実施例の砥石と同様な
作用をもち、同様な効果を上げることができる。
Therefore, the grindstone of the second embodiment has the same function as the grindstone of the first embodiment, and can achieve similar effects.

なお、第1.第2実施例では砥粒としてダイヤモンド粒
を使用したが立方晶窒化ほう素粒でもよいことは勿論で
ある。また、砥粒保持体として実施例には銅粉及びアル
ミニウム粉を使用したが、これに限定されず、鉄粉、錫
粉等であってもよい。
In addition, 1. In the second embodiment, diamond grains were used as the abrasive grains, but it goes without saying that cubic boron nitride grains may also be used. In addition, although copper powder and aluminum powder were used as the abrasive grain holder in the examples, the present invention is not limited thereto, and iron powder, tin powder, etc. may also be used.

〔発明の効果〕〔Effect of the invention〕

以上説明した如く、本発明の製造法により鏡面仕上げ用
超砥粒砥石を製造すれば、工作物材料表面に深い疵を生
成させる慣れがないと共に、平面度の高い仕上面を得る
ことができる。
As explained above, by manufacturing a superabrasive grindstone for mirror finishing using the manufacturing method of the present invention, it is possible to obtain a finished surface with high flatness while eliminating the habit of forming deep scratches on the surface of the workpiece material.

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

第1図は本発明の砥石の構造を示す説明図、第2図は本
発明の砥石の硬さ1曲げ強度及び気孔率とフェノール樹
脂量との関係を示す線図、第3図は同じく砥石の硬さ1
曲げ強度及び気孔率とダイヤモンド粒の粒径との関係を
示す線図である。 1・・・ダイヤモンド粒  2・・・銅粉3・・・気孔
       4・・・フェノール樹脂特許出願人  
株式会社 呉英製作所 第2図 粉末#を脂 液状樹脂量9
Fig. 1 is an explanatory diagram showing the structure of the grinding wheel of the present invention, Fig. 2 is a diagram showing the relationship between the hardness 1 bending strength and porosity of the grinding wheel of the invention, and the amount of phenolic resin. hardness of 1
FIG. 2 is a diagram showing the relationship between bending strength and porosity and the particle size of diamond grains. 1... Diamond grains 2... Copper powder 3... Pores 4... Phenol resin patent applicant
Kure Seisakusho Co., Ltd. Figure 2 Powder No. Liquid resin amount 9

Claims (9)

【特許請求の範囲】[Claims] (1)砥粒に砥粒保持体及び結合剤を混和して加圧成形
し、該成形物を固化させて製造することを特徴とする鏡
面仕上げ用超砥粒砥石の製造法。
(1) A method for manufacturing a super-abrasive grindstone for mirror finishing, which comprises mixing abrasive grains with an abrasive grain holder and a binder, press-molding the mixture, and solidifying the molded product.
(2)前記砥粒がダイヤモンドである特許請求の範囲第
1項記載の鏡面仕上げ用超砥粒砥石の製造法。
(2) The method for manufacturing a superabrasive grindstone for mirror finishing according to claim 1, wherein the abrasive grains are diamond.
(3)前記砥粒が立方晶窒化ほう素である特許請求の範
囲第1項記載の鏡面仕上げ用超砥粒砥石の製造法。
(3) The method for manufacturing a superabrasive grindstone for mirror finishing according to claim 1, wherein the abrasive grains are cubic boron nitride.
(4)前記砥粒保持体が鉄粉である特許請求の範囲第1
項記載の鏡面仕上げ用超砥粒砥石の製造法。
(4) Claim 1, wherein the abrasive grain holder is iron powder.
A method for producing a superabrasive grindstone for mirror finishing as described in Section 1.
(5)前記砥粒保持体が銅粉である特許請求の範囲第1
項記載の鏡面仕上げ用超砥粒砥石の製造法。
(5) Claim 1, wherein the abrasive grain holder is copper powder.
A method for producing a superabrasive grindstone for mirror finishing as described in Section 1.
(6)前記砥粒保持体がアルミニウム粉である特許請求
の範囲第1項記載の鏡面仕上げ用超砥粒砥石の製造法。
(6) The method for manufacturing a superabrasive grindstone for mirror finishing according to claim 1, wherein the abrasive grain holder is aluminum powder.
(7)前記砥粒保持体が錫粉である特許請求の範囲第1
項記載の鏡面仕上げ用超砥粒砥石の製造法。
(7) Claim 1, wherein the abrasive grain holder is tin powder.
A method for producing a superabrasive grindstone for mirror finishing as described in Section 1.
(8)前記結合剤が170〜230℃の温度で固化させ
るフェノール樹脂である特許請求の範囲第1項記載の鏡
面仕上げ用超砥粒砥石の製造法。
(8) The method for producing a superabrasive grindstone for mirror finishing according to claim 1, wherein the binder is a phenolic resin that is solidified at a temperature of 170 to 230°C.
(9)前記結合剤が常温で固化させるエポキシ樹脂と硬
化剤である特許請求の範囲第1項記載の鏡面仕上げ用超
砥粒砥石の製造法。
(9) The method for producing a superabrasive grindstone for mirror finishing according to claim 1, wherein the binder is an epoxy resin that solidifies at room temperature and a curing agent.
JP8766486A 1986-04-16 1986-04-16 Manufacture of super abrasive grain grindstone for mirror-like surface finishing Pending JPS62246474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8766486A JPS62246474A (en) 1986-04-16 1986-04-16 Manufacture of super abrasive grain grindstone for mirror-like surface finishing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8766486A JPS62246474A (en) 1986-04-16 1986-04-16 Manufacture of super abrasive grain grindstone for mirror-like surface finishing

Publications (1)

Publication Number Publication Date
JPS62246474A true JPS62246474A (en) 1987-10-27

Family

ID=13921211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8766486A Pending JPS62246474A (en) 1986-04-16 1986-04-16 Manufacture of super abrasive grain grindstone for mirror-like surface finishing

Country Status (1)

Country Link
JP (1) JPS62246474A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360978A (en) * 1989-07-25 1991-03-15 Kanebo Ltd Diamond grinding stone and manufacture thereof
JPH03234472A (en) * 1990-02-05 1991-10-18 Tokyo Jiki Insatsu Kk Polishing tool
WO1996014187A1 (en) * 1994-11-02 1996-05-17 Norton Company Improved abrasive articles and method for preparing them
US6514302B2 (en) 2001-05-15 2003-02-04 Saint-Gobain Abrasives, Inc. Methods for producing granular molding materials for abrasive articles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5537239A (en) * 1978-09-05 1980-03-15 Asahi Glass Co Ltd Manufacturing method of resin-bonded diamond wheel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5537239A (en) * 1978-09-05 1980-03-15 Asahi Glass Co Ltd Manufacturing method of resin-bonded diamond wheel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360978A (en) * 1989-07-25 1991-03-15 Kanebo Ltd Diamond grinding stone and manufacture thereof
JPH03234472A (en) * 1990-02-05 1991-10-18 Tokyo Jiki Insatsu Kk Polishing tool
WO1996014187A1 (en) * 1994-11-02 1996-05-17 Norton Company Improved abrasive articles and method for preparing them
US5611827A (en) * 1994-11-02 1997-03-18 Norton Company Method for preparing mixtures for abrasive articles
US5976204A (en) * 1994-11-02 1999-11-02 Norton Company Abrasive articles and method for preparing them
US6514302B2 (en) 2001-05-15 2003-02-04 Saint-Gobain Abrasives, Inc. Methods for producing granular molding materials for abrasive articles

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