JPS62251077A - Vitrifide grinding element - Google Patents
Vitrifide grinding elementInfo
- Publication number
- JPS62251077A JPS62251077A JP9008386A JP9008386A JPS62251077A JP S62251077 A JPS62251077 A JP S62251077A JP 9008386 A JP9008386 A JP 9008386A JP 9008386 A JP9008386 A JP 9008386A JP S62251077 A JPS62251077 A JP S62251077A
- Authority
- JP
- Japan
- Prior art keywords
- vitrified
- grinding
- grinding wheel
- baking
- vitrifide
- 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.)
- Granted
Links
- 238000010304 firing Methods 0.000 claims description 25
- 239000011796 hollow space material Substances 0.000 claims description 22
- 239000003082 abrasive agent Substances 0.000 claims description 11
- 239000010883 coal ash Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000006061 abrasive grain Substances 0.000 abstract description 16
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 8
- 239000011148 porous material Substances 0.000 abstract description 5
- 230000014759 maintenance of location Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 229910003460 diamond Inorganic materials 0.000 description 5
- 239000010432 diamond Substances 0.000 description 5
- 239000011256 inorganic filler Substances 0.000 description 4
- 229910003475 inorganic filler Inorganic materials 0.000 description 4
- 229910001562 pearlite Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、砥材をビトリファイドボンドで結合してなる
ビトリファイド砥石に関し、特に砥料として超砥粒を用
いてなるビトリファイド砥石に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vitrified grindstone formed by bonding abrasive materials with a vitrified bond, and particularly to a vitrified grindstone formed by using superabrasive grains as an abrasive.
［従来技術および問題点］
ビトリファイド砥石には、有機質の気孔形成剤を含有し
、これによって気孔を形成させたものがある。しかしな
がら、この種のビトリファイド砥石は焼成時において気
孔形成剤が除去されてしまう関係上、砥材の保持力が低
下し、また砥石の焼成収縮が大きい等の問題がある。[Prior Art and Problems] Some vitrified grindstones contain an organic pore-forming agent to form pores. However, this type of vitrified whetstone has problems such as a decrease in the holding power of the abrasive material and a large shrinkage of the whetstone during firing because the pore forming agent is removed during firing.
そのため、気孔形成剤として天然ガラス質岩石を原料と
するパーライトを使用し、パーライトが結合剤としての
機能を兼備することを利用して。Therefore, we use pearlite, which is made from natural glassy rock, as a pore-forming agent, and take advantage of the fact that pearlite also functions as a binder.
砥材の保持力を高めたビトリファイド砥石が存在する（
特公昭３７−７４６号）。しかしながら。There are vitrified whetstones that have increased retention of abrasive materials (
Special Publication No. 37-746). however.
このビトリファイド砥石にあっては、焼成時においてパ
ーライトが軟化溶融することに基づいて結合作用を果た
すものであるため、必然的に砥石の焼成収縮をきたし、
所期の形状を維持し得なくなるほか、砥石構造（気孔率
、砥料率など）の制御が困難であり、製品管理上問題で
あった。In this vitrified whetstone, since the pearlite performs a bonding action based on softening and melting during firing, the whetstone inevitably shrinks during firing.
In addition to not being able to maintain the desired shape, it was difficult to control the whetstone structure (porosity, abrasive rate, etc.), which was a problem in terms of product management.
さらに、これら従来のビトリファイド砥石（有機質また
はパーライトを気孔形成剤として利用してなるもの）に
あっては、燃抜けまたは軟化溶融に基づく砥石の焼成収
縮が不可避であることから、ホットプレス等によって高
気孔率の砥石を得ることは不可能であった。Furthermore, with these conventional vitrified grinding wheels (made using organic materials or pearlite as a pore-forming agent), shrinkage during firing of the grinding wheel due to burnout or softening and melting is unavoidable. It was impossible to obtain a grindstone with high porosity.
ところで、ビトリファイド砥石（特に、高気孔率のもの
）は、目立て（ドレス）が容易であるという利点を有す
る。しかるに、このビトリファイド砥石に近時砥材とし
て多用されつつある超砥粒（ダイヤモンドまたはＣＢＮ
）を適用する場合には、経済的量産性の見地から、無機
質の充Ｊ！Ｒ月（たとえば、アルミナ質系成分、炭化ケ
イ素質系成分）を混入することにより集中度を低下させ
ることになる。しかしながら、この場合には研削条件に
よっては充填材が磨減り摩耗して研削に支障をきたすの
で、目立てが頻繁に必要になりビトリファイドの上記利
点を充分に活用できない事態を生じていた。By the way, vitrified grindstones (especially those with high porosity) have the advantage of being easy to dress. However, superabrasive grains (diamond or CBN), which are increasingly being used as abrasive materials, are used in this vitrified whetstone.
), from the viewpoint of economical mass production, it is necessary to apply J! By mixing R (eg, alumina-based component, silicon carbide-based component), the degree of concentration is reduced. However, in this case, depending on the grinding conditions, the filler may wear down and wear out, causing problems in grinding, so that sharpening is required frequently, making it impossible to fully utilize the above-mentioned advantages of vitrified material.
本発明の目的は、かかる技術背景下において。It is against this technical background that the object of the present invention is achieved.
砥材の保持力を低下させることなく任意の気孔率の気孔
を維持し、焼成時の寸法収縮が極めて少なく、目立てを
簡易化するビトリファイド砥石を提供することにある。To provide a vitrified whetstone that maintains pores of arbitrary porosity without reducing the holding power of the abrasive material, exhibits extremely little dimensional shrinkage during firing, and simplifies sharpening.
［問題点を解決するための手段］ 本発明者等は、ビトリファイド砥石について。[Means for solving problems] The inventors of the present invention describe vitrified grinding wheels.
砥材として超砥粒を採用して気孔率を変化すべく種々研
究を重ねた結果、特定の物質を含有せしめたところ、ビ
トリファイド砥石として極めて優れた結果を得たため、
ここに提案するものである。As a result of various studies to change the porosity by using super abrasive grains as the abrasive material, we found that when we added a specific substance, we obtained extremely excellent results as a vitrified whetstone.
This is what I propose here.
本発明のビトリファイド砥石は、砥材が超砥粒であり、
無機質中空状物質を含有し、前記中空状物質の軟化点が
前記超砥粒用ビトリファイドボンドの固有焼成温度より
も高いことを特徴とする。In the vitrified grindstone of the present invention, the abrasive material is superabrasive grains,
It is characterized in that it contains an inorganic hollow material, and the softening point of the hollow material is higher than the specific firing temperature of the vitrified bond for superabrasive grains.
［好適な実施態様］
本発明のビトリファイド砥石に含有される無機＝ ３
−
質中空状物質は、その軟化点が超砥粒用ビトリファイド
ボンドの固有焼成温度よりも５０℃以」二、より好まし
くは１００℃以上高いことが好ましい。焼成時において
、無機質中空状物質の軟化または異常膨張などによる砥
石の変形を極力発生させないためである。ここで、超砥
粒用ビトリファイドボンドの固有焼成温度は、一般砥粒
を砥材として使用したときにおけるビトリファイドボン
ドの固有焼成温度よりも低温で、一般的には６５０〜１
０００℃、より好ましくは７００〜９５０℃の範囲の焼
成温度である。上限を超えると超砥粒に劣化が起こり、
下限未満であると強度発現に支障をきたす。より具体的
には、使用されるビトリファイドの種類に応じて採択さ
れる。[Preferred embodiment] Inorganic content contained in the vitrified grindstone of the present invention = 3
- It is preferable that the softening point of the hollow material is 50° C. or more, more preferably 100° C. or more higher than the specific firing temperature of the vitrified bond for superabrasive grains. This is to minimize deformation of the grindstone due to softening or abnormal expansion of the inorganic hollow material during firing. Here, the specific firing temperature of vitrified bond for superabrasive grains is lower than the specific firing temperature of vitrified bond when general abrasive grains are used as abrasive material, and is generally 650 to 1
000°C, more preferably 700-950°C. If the upper limit is exceeded, the superabrasive grains will deteriorate,
If it is less than the lower limit, strength development will be hindered. More specifically, it is selected depending on the type of vitrified material used.
無機質中空状物質としては、下記のものが挙げられる（
なお、括弧内の温度は軟化点である）：・ガラスバルー
ン （１０００℃）
・シラスバルーン （９００℃）
・炭素系バルーン （９００℃）
・アルミナ系バルーン（１５００℃）
・石炭灰バルーン （１３００℃）
無機質中空状物質の直径および壁厚は、研削時に容易に
破壊されて自生作用を阻害しない程度のものであること
が好ましい。Examples of inorganic hollow substances include the following (
The temperature in parentheses is the softening point): - Glass balloon (1000°C) - Shirasu balloon (900°C) - Carbon-based balloon (900°C) - Alumina-based balloon (1500°C) - Coal ash balloon (1300°C) ) The diameter and wall thickness of the inorganic hollow material are preferably such that they are easily destroyed during grinding and do not inhibit self-growth.
無機質中空状物質の熱膨張係数は１粒子間応力によって
ボンドブリッジにクラックを発生させないために、ビト
リファイドボンドのそれ（たとえば、４〜６ Ｘ １０
−６／’Ｃ）とほぼ同程度のものであることが好ましい
。石炭灰バルーンは、その熱膨張係数が超砥粒およびビ
トリファイドボンドのそれに近いことから、好適である
。The coefficient of thermal expansion of the inorganic hollow material is that of vitrified bond (for example, 4 to 6 x 10
-6/'C) is preferably approximately the same. Coal ash balloons are preferred because their coefficient of thermal expansion is close to that of superabrasives and vitrified bonds.
無機質中空状物質の粒度は、焼成収縮を極力抑止させる
観点から、超砥粒の平均粒径の１／２〜２倍程度、より
好ましくはほぼ一致させることが好ましい。From the viewpoint of suppressing firing shrinkage as much as possible, the particle size of the inorganic hollow material is preferably about 1/2 to 2 times, more preferably approximately equal to, the average particle size of the superabrasive grains.
無機質中空状物質は、好ましくは原料組成で４５％〜５
５％（容量％、以以下上）まで含有させ得る。The inorganic hollow material preferably has a raw material composition of 45% to 5%.
It can be contained up to 5% (volume %, below or above).
本発明のビトリファイド砥石は、高度な精密部品の研削
用として好適なものである。被削材としては、一般の鉄
系材料（鋳鉄・鋼など）およびアルミニウム・プラスチ
ックなどの非鉄系材料のほか、セラミックス・ＦＲＭな
どの難削性の新材料をも対象とする。The vitrified grindstone of the present invention is suitable for grinding highly precise parts. Work materials include general ferrous materials (cast iron, steel, etc.) and non-ferrous materials such as aluminum and plastic, as well as new difficult-to-cut materials such as ceramics and FRM.
なお、参考のために１本発明砥石の模式図を第１図に示
しておく。同図において、１は超砥粒。For reference, a schematic diagram of a grindstone according to the present invention is shown in FIG. 1. In the figure, 1 is super abrasive grain.
２はビトリファイドボンド、３は気孔および４は無機質
中空状物質をそれぞれ示す。2 represents a vitrified bond, 3 represents a pore, and 4 represents an inorganic hollow material.
［発明の効果］
本発明のビトリファイド砥石にあっては、前述したよう
な構成にしたことから１次のような種々の効果を奏する
。[Effects of the Invention] Since the vitrified grindstone of the present invention has the above-described structure, it has various effects as described below.
■ 無機質中空状物質が気孔形成剤として機能するので
、その含有量を調整することによって、気孔率を容易に
調節できる。(2) Since the inorganic hollow material functions as a pore-forming agent, the porosity can be easily adjusted by adjusting its content.
■ 無機質中空状物質が焼成時においても除去されるこ
となく砥石中に残存するので、砥材の保持力低下ひいて
は砥石の強度低下が極めて少ない。- Since the inorganic hollow material remains in the whetstone without being removed even during firing, there is very little reduction in the holding power of the abrasive material and hence in the strength of the whetstone.
■ 無機質中空状物質は超砥粒用ビトリファイドボンド
の固有焼成温度よりも高い軟化点を有するので、焼成時
において軟化せず、したがって、焼成収縮を極力抑止で
きる。そのため、砥石構造を所期のものに維持でき、製
品管理が容易である。(2) Since the inorganic hollow material has a softening point higher than the specific firing temperature of the vitrified bond for superabrasive grains, it does not soften during firing, and therefore firing shrinkage can be suppressed as much as possible. Therefore, the grindstone structure can be maintained as desired, and product management is easy.
気孔率について云えば、最大７０％程度の砥石を得るこ
とができる（従来の有機系気孔形成剤にあっては最大４
０％程度である）。Regarding the porosity, it is possible to obtain grindstones with a maximum porosity of about 70% (with conventional organic pore-forming agents, it is up to 4%).
(approximately 0%).
加えて、無機質中空状物質が軟化しないので。In addition, the inorganic hollow material does not soften.
ホットプレス等によっても任意の気孔率の砥石を得るこ
とができる。A grindstone with an arbitrary porosity can also be obtained by hot pressing or the like.
■ 無機質中空状物質が気孔形成剤として機能するとと
もに、それ自体が無機質充填材としても機能するので、
別途に無機質充填材を添加することなく砥石の集中度を
変化させ得る。したがって。■ The inorganic hollow material functions as a pore-forming agent and also functions as an inorganic filler itself.
The degree of concentration of the grindstone can be changed without adding a separate inorganic filler. therefore.
本発明のように砥材として超砥粒を用いる場合には好都
合である。This is advantageous when using superabrasive grains as the abrasive material as in the present invention.
加えて、無機質中空状物質はその隔壁が研削時において
容易に破壊されるので、焼けを殆んど発生せず、研削不
良に陥らない。したがって、目立てをしなくても良好な
自生作用を発揮でき、研削効率の観点から好都合である
。In addition, since the partition walls of the inorganic hollow material are easily destroyed during grinding, burns hardly occur and grinding defects do not occur. Therefore, a good self-sharpening effect can be exhibited without sharpening, which is advantageous from the viewpoint of grinding efficiency.
［実施例］ 以下２本発明を実施例に基づいて説明する。[Example] The present invention will be described below based on two examples.
実施例１〜３ （ＣＢＮ砥粒：集中度１００）・ＣＢＮ
砥粒（＃８０／１００） ２５容量部・無機質中空状
物質（１５１〜１６５μｌ１１）２７′・ビトリファイ
ドボンド １８ ′・糊料
６ ″砥石成分を上記割合で配合し、無機質
中空状物質として第１表に示したものを用いた（ビトリ
ファイドボンドは特公昭５２−２７３９４号に準する）
。なお、比較例１．２として無機質中空状物質に代えて
有機質気孔形成剤またはパーライト（焼成によって軟化
溶融させる。）を配合したものを用いた。Examples 1 to 3 (CBN abrasive grains: concentration 100)・CBN
Abrasive grains (#80/100) 25 parts by volume・Inorganic hollow material (151-165μl11) 27′・Vitrified bond 18′・Glue
6" Grinding wheel components were mixed in the above proportions, and the inorganic hollow material shown in Table 1 was used (Vitrified bond is based on Japanese Patent Publication No. 52-27394)
. In Comparative Example 1.2, an organic pore-forming agent or perlite (softened and melted by firing) was used instead of the inorganic hollow material.
実施例および比較例の各配合物を角柱型にプレス成形し
、９５０℃で５時間焼成して砥石を得た。その焼成収縮
の結果を同じく第１表に示す。Each of the formulations of Examples and Comparative Examples was press-molded into a prismatic shape and fired at 950° C. for 5 hours to obtain a grindstone. The results of the firing shrinkage are also shown in Table 1.
第 １ 表
この表から明らかなように、実施例１〜３の砥石は、い
ずれも比較例１．２の砥石に比して焼成収縮が少ない。Table 1 As is clear from this table, the grindstones of Examples 1 to 3 all have less firing shrinkage than the grindstones of Comparative Examples 1.2.
特に９石炭灰バルーン、アルミナバルーンを使用した場
合（実施例１．３）に顕著である。This is particularly noticeable when using 9 coal ash balloons and alumina balloons (Example 1.3).
また、実施例１に係る配合例について、プレス成形し、
９００℃で５時間焼成して、外径：３０５、厚さ＝１５
．穴径ニア６．２（關）の砥石を作成し、平面研削を行
ない、研削性能すなわち（ａ）砥石摩耗寸法、（ｂ）研
削比および（ｃ）消費電力について調べた。その結果を
第２〜４図に示す。Further, regarding the formulation example according to Example 1, press molding was performed,
Baked at 900℃ for 5 hours, outer diameter: 305, thickness = 15
．． A grindstone with a hole diameter of near 6.2 was prepared, surface grinding was performed, and the grinding performance, namely (a) grindstone wear size, (b) grinding ratio, and (c) power consumption, was investigated. The results are shown in Figures 2-4.
なお、比較例３として石炭灰バルーンに代えてムライト
（無機質充填材）を配合したものを用い、研削条件は下
記の通りである：
砥石周速度 １５００ ｍ／ｍｉｎテーブル送り
速度 ２０ｍ／ｍｉｎ切 込 量
１０ μｍ／ｐａｓｓ被 削 材
５ＫＨ５１被削材寸法 長さ３０
０×幅１０（龍）比較例３の砥石では目立てを行なわな
い場合焼けが発生した（第４図）。これに対して、実施
例１の砥石においては目立てを施すことなく使用するこ
とができる。さらに実施例１の砥石は比較例３の砥石に
目立てを施したものと比較しても、砥石摩耗寸法および
消費電力がともに小さく、シかも研削比が高く、優れた
研削性能を示した（第２図〜第４図）。As Comparative Example 3, a material containing mullite (inorganic filler) instead of coal ash balloons was used, and the grinding conditions were as follows: Grinding wheel peripheral speed: 1500 m/min Table feed speed: 20 m/min Depth of cut
10 μm/pass cut material
5KH51 Work material dimensions Length 30
With the whetstone of Comparative Example 3 (0×width 10 (dragon)), burns occurred when sharpening was not performed (FIG. 4). On the other hand, the grindstone of Example 1 can be used without dressing. Furthermore, the grinding wheel of Example 1 exhibited excellent grinding performance, with smaller wear dimensions and power consumption, and a higher grinding ratio than the grinding wheel of Comparative Example 3. Figures 2 to 4).
実施例４（ダイヤモンド砥粒）
次に、超砥粒としてダイヤモンド砥粒（＃８０／１００
）を使用し、その他は前述したＣＢＮ砥粒の実施例と同
様にして成形・焼成した。その焼成収縮についての結果
を第２表に示す（なお、比較例としてダイヤモンド砥粒
とともに、有機質気孔形成剤を配合したものを使用した
）。Example 4 (Diamond abrasive grains) Next, diamond abrasive grains (#80/100
), and otherwise molded and fired in the same manner as in the example of CBN abrasive grains described above. The results of the firing shrinkage are shown in Table 2 (as a comparative example, an organic pore-forming agent was used along with diamond abrasive grains).
第２表
この実施例にあっても、比較例に比して焼成収縮が少な
くなることが認められた。すなわち。Table 2 In this example as well, it was observed that the firing shrinkage was smaller than in the comparative example. Namely.
ＣＢＮと同様ダイヤモンド砥粒においても、無機質中空
状物質は有効であった。Similar to CBN, inorganic hollow materials were also effective for diamond abrasive grains.
実施例５ （ＣＢＮ砥粒：集中度１５０）−ＣＢＮ砥粒
（＃ １７０／２００） ３７．５ 容量部・
石炭灰バルーン １４．５ ’・ビト
リファイドボンド １８′
・糊料 ６ ′砥石成分を
上記割合で配合し、前記実施例１〜３と同様に成形・焼
成して砥石を作成しくただし、砥石寸法は外径：１５．
厚さ：１０．穴径＝６（ＩＩＩＩｌｌ）とした。）、内
面研削を行ない、研削性能等について調べた。その結果
を第５図〜第８図に示す。Example 5 (CBN abrasive grains: concentration 150) - CBN abrasive grains (# 170/200) 37.5 parts by volume・
Coal ash balloon 14.5', Vitrified bond 18', Glue 6' Grinding wheel components were mixed in the above proportions, and a grinding wheel was prepared by molding and firing in the same manner as in Examples 1 to 3, except that the dimensions of the grinding wheel were not the same. Diameter: 15.
Thickness: 10. The hole diameter was set to 6 (IIIll). ), internal grinding was performed and the grinding performance etc. was investigated. The results are shown in FIGS. 5 to 8.
なお、比較例５として石炭灰バルーンに代えてムライト
（無機質充填材）を配合したものを用い、研削条件は下
記の通りである：
機 械 東洋工内面研削盤（Ｔ−１１１）砥石周速
１７００ ｍ／ｍｉｎワーク ’
５０ｍ／ｍｉｎストローク量 ２
ｍｍ
切込み速度 粗研 φ２０μｍ／ｓｅｅ精研 φ ５
μｍ／ｓｅｃ
取 代 φ ０．２ｍｎ＋
スパーファウト ５ストローク被 削 材
５ＵＪ２（ＨＲＣ［ｉ２） φ５０Ｘ ＩＯＸ
φ２０クーラント ノリタケクール ５Ａ−０２ド
レス条件 ドレッサー単石ｆ／２ｃｔ（八面体）切込
み φ４（μｍ／パス）
ドレス送りリード
０．０７ ｍｍ／ｒｅｖ ｏｆ ｗｈｅｅｌ上記条件の
ドレスにより、実施例５の砥石はその研削面が全幅にわ
たって略平坦面（０，３μｍ程度）を維持しているのに
対し、比較例５の砥石はうねり（１μｍ程度）を発生し
ており（第８図（ａ）（ｂ））、実施例５の砥石が非常
にドレス性に優れていることが認められた。In addition, as Comparative Example 5, a material containing mullite (inorganic filler) instead of coal ash balloons was used, and the grinding conditions were as follows: Machine Toyo Ko internal grinder (T-111) Grinding wheel peripheral speed 1700 m/min work'
50m/min stroke amount 2
mm Cutting speed Coarse grinding φ20μm/see Fine grinding φ 5
μm/sec Machining allowance φ 0.2mm+
Sparfout 5 stroke work material 5UJ2 (HRC [i2) φ50X IOX
φ20 coolant Noritake Cool 5A-02 Dressing conditions Dresser single stone f/2ct (octahedral) cut φ4 (μm/pass) Dressing feed lead 0.07 mm/rev of wheel By dressing under the above conditions, the grinding wheel of Example 5 While the grinding surface maintained a substantially flat surface (about 0.3 μm) over the entire width, the grinding wheel of Comparative Example 5 generated undulations (about 1 μm) (Fig. 8 (a) and (b)). It was found that the grindstone of Example 5 had excellent dressing properties.
また、実施例５の砥石は比較例５の砥石に比して、砥石
摩耗寸法、研削比および消費電力についても優れた結果
を示した（第５図〜第７図）。Furthermore, the grindstone of Example 5 showed superior results in terms of grindstone wear size, grinding ratio, and power consumption as compared to the grindstone of Comparative Example 5 (FIGS. 5 to 7).
第１図は１本発明のビトリファイド砥石を示す模式図。
第２図〜第４図は、実施例１の砥石と比較例３の砥石に
ついて研削性能を対比したグラフであって、第２図は研
削摩耗寸法、第３図は研削比、第４図は消費電力に係る
もの。
第５図〜第７図は、実施例５の砥石と比較例５の砥石に
ついて研削性能を対比したグラフであって、第５図は研
削摩耗寸法、第６図は研削比、第７図は消費電力に係る
もの、および
第８図は、目立て後における砥石研削面の断面形状を示
した図（倍率Ｘ５０００）であって。
（ａ）は実施例５．（ｂ）は比較例５に係るもの。
を表わす。
１・・・超砥粒、 ２・・・ビトリファイドボンド。
４・・・無機質中空状物質。
出願人 株式会社ノリタケカンパニーリミテド代理人
弁理士 加 藤 朝 道 （他１名）第１図
第３図
第２図
′第４図
！５ 蟇 沢
５律−Ｒミ
ε
岨４≦ｔ−曳くFIG. 1 is a schematic diagram showing a vitrified grindstone of the present invention. Figures 2 to 4 are graphs comparing the grinding performance of the grindstone of Example 1 and Comparative Example 3, where Figure 2 is the grinding wear dimension, Figure 3 is the grinding ratio, and Figure 4 is the grinding performance. Items related to power consumption. Figures 5 to 7 are graphs comparing the grinding performance of the grindstone of Example 5 and Comparative Example 5, in which Figure 5 shows the grinding wear dimension, Figure 6 shows the grinding ratio, and Figure 7 shows the grinding performance. Regarding power consumption, FIG. 8 is a diagram (magnification: X5000) showing the cross-sectional shape of the grinding surface of the whetstone after sharpening. (a) is Example 5. (b) is related to Comparative Example 5. represents. 1... Super abrasive grain, 2... Vitrified bond. 4...Inorganic hollow substance. Applicant Noritake Co., Ltd. Agent
Patent Attorney Asami Kato (and 1 other person) Figure 1 Figure 3 Figure 2' Figure 4! 5 Toad Sawa 5 Rhythm-Rmiε 岨4≦t-Hikiku
Claims (4)
、前記中空状物質の軟化点が前記超砥粒用ビトリファイ
ドボンドの固有焼成温度よりも高い、ことを特徴とする
ビトリファイド砥石。(1) A vitrified grinding wheel characterized in that the abrasive material is a superabrasive grain, contains an inorganic hollow material, and the softening point of the hollow material is higher than the specific firing temperature of the vitrified bond for the superabrasive grain. .
も５０℃以上である特許請求の範囲第１項記載のビトリ
ファイド砥石。(2) The vitrified grindstone according to claim 1, wherein the difference between the softening point and the specific firing temperature is at least 50°C or more.
の範囲内にある特許請求の範囲第１項または第２項記載
のビトリファイド砥石。(3) The vitrified grindstone according to claim 1 or 2, wherein the specific firing temperature is within a range of 650°C or more and 1000°C or less.
ン、炭素系バルーン、アルミナ系バルーンまたは石炭灰
バルーンの少なくとも一種である特許請求の範囲第１項
ないし第３項のいずれか一に記載のビトリファイド砥石
。(4) The vitrified grindstone according to any one of claims 1 to 3, wherein the hollow material is at least one of a glass balloon, a glass balloon, a carbon-based balloon, an alumina-based balloon, or a coal ash balloon. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61090083A JPH0624700B2 (en) | 1986-04-21 | 1986-04-21 | Vitrified grindstone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61090083A JPH0624700B2 (en) | 1986-04-21 | 1986-04-21 | Vitrified grindstone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62251077A true JPS62251077A (en) | 1987-10-31 |
| JPH0624700B2 JPH0624700B2 (en) | 1994-04-06 |
Family
ID=13988626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61090083A Expired - Fee Related JPH0624700B2 (en) | 1986-04-21 | 1986-04-21 | Vitrified grindstone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624700B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316174A (en) * | 1988-06-16 | 1989-12-21 | Noritake Co Ltd | Vitrified super grain grindstone |
| EP0577805A1 (en) * | 1992-01-23 | 1994-01-12 | Cincinnati Milacron Inc | Shrinkage reducing composition for bonded abrasive article. |
| WO2005072912A1 (en) * | 2004-01-28 | 2005-08-11 | Kure-Norton Co., Ltd. | Method for producing vitrified diamond whetstone |
| JP2006247837A (en) * | 2001-08-21 | 2006-09-21 | Saint-Gobain Abrasives Inc | Vitrified super-abrasive working tool and manufacturing method |
| JP2007030110A (en) * | 2005-07-28 | 2007-02-08 | Honda Motor Co Ltd | Vitrified grinding stone and its manufacturing method, and method for grinding cast iron workpiece using the same grinding tool |
| CN103358408A (en) * | 2012-04-10 | 2013-10-23 | 株式会社迪思科 | Processing method for sapphire wafer |
| US9387554B2 (en) | 2012-08-17 | 2016-07-12 | Disco Corporation | Laser processing apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721270A (en) * | 1980-07-09 | 1982-02-03 | Asahi Daiyamondo Kogyo Kk | Grinder stone having diamond or cbn as granules |
| JPS57178667A (en) * | 1981-04-23 | 1982-11-02 | Noritake Co Ltd | Vitrified grindstone of super abrasive grain and manufacture |
| JPS59107859A (en) * | 1982-12-09 | 1984-06-22 | Inoue Japax Res Inc | Grindstone |
-
1986
- 1986-04-21 JP JP61090083A patent/JPH0624700B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721270A (en) * | 1980-07-09 | 1982-02-03 | Asahi Daiyamondo Kogyo Kk | Grinder stone having diamond or cbn as granules |
| JPS57178667A (en) * | 1981-04-23 | 1982-11-02 | Noritake Co Ltd | Vitrified grindstone of super abrasive grain and manufacture |
| JPS59107859A (en) * | 1982-12-09 | 1984-06-22 | Inoue Japax Res Inc | Grindstone |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316174A (en) * | 1988-06-16 | 1989-12-21 | Noritake Co Ltd | Vitrified super grain grindstone |
| EP0577805A1 (en) * | 1992-01-23 | 1994-01-12 | Cincinnati Milacron Inc | Shrinkage reducing composition for bonded abrasive article. |
| EP0577805A4 (en) * | 1992-01-23 | 1994-06-08 | Cincinnati Milacron Inc | Shrinkage reducing composition for bonded abrasive article |
| JP2006247837A (en) * | 2001-08-21 | 2006-09-21 | Saint-Gobain Abrasives Inc | Vitrified super-abrasive working tool and manufacturing method |
| WO2005072912A1 (en) * | 2004-01-28 | 2005-08-11 | Kure-Norton Co., Ltd. | Method for producing vitrified diamond whetstone |
| JP2007030110A (en) * | 2005-07-28 | 2007-02-08 | Honda Motor Co Ltd | Vitrified grinding stone and its manufacturing method, and method for grinding cast iron workpiece using the same grinding tool |
| JP4562609B2 (en) * | 2005-07-28 | 2010-10-13 | 本田技研工業株式会社 | Vitrified grinding wheel, method of manufacturing the same, and cast iron workpiece grinding method using the same |
| CN103358408A (en) * | 2012-04-10 | 2013-10-23 | 株式会社迪思科 | Processing method for sapphire wafer |
| US9387554B2 (en) | 2012-08-17 | 2016-07-12 | Disco Corporation | Laser processing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624700B2 (en) | 1994-04-06 |
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