JP2003071727A - Grinding wheel flange for high speed grinding and working method using the same - Google Patents
Grinding wheel flange for high speed grinding and working method using the sameInfo
- Publication number
- JP2003071727A JP2003071727A JP2001263419A JP2001263419A JP2003071727A JP 2003071727 A JP2003071727 A JP 2003071727A JP 2001263419 A JP2001263419 A JP 2001263419A JP 2001263419 A JP2001263419 A JP 2001263419A JP 2003071727 A JP2003071727 A JP 2003071727A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- grindstone
- base
- grinding
- high speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、高速研削加工に用
いる砥石を装置に取り付けて固定するためのフランジに
関するものであり、特に、高速研削切断用砥石に用いる
フランジに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flange for mounting and fixing a grindstone used for high-speed grinding on an apparatus, and more particularly to a flange used for a grindstone for high-speed grinding and cutting.
【０００２】[0002]
【従来の技術】従来より、研削や切断に用いられる砥石
を研削装置あるいは切断装置の主軸に取り付け保持する
ためにフランジが用いられる。このフランジは、砥石側
面を両側から挟むようにして主軸に取り付けられるのが
一般的である。フランジの素材としては、一般的には鋼
や鋳鉄、軽量化が必要な場合はアルミニウム合金などが
用いられ、特殊なものとして、純チタン、マグネシウム
合金などが使用されることがある。軽量なフランジは、
砥石回転時のモータへの負荷などを軽減するために使用
される。フランジを使用するのは、切断精度を確保する
ことが目的であり、砥石が軸方向に歪みを生じないよう
に保持することにより、切断精度が確保できる。また、
高精度加工を達成するために、素材は高強度であること
が重要であり、さらに比強度（引張強度／密度）が高い
ことが重要視される。2. Description of the Related Art Conventionally, a flange has been used to mount and hold a grindstone used for grinding or cutting on a spindle of a grinding device or a cutting device. This flange is generally attached to the spindle so that the side surface of the grindstone is sandwiched from both sides. As the material of the flange, steel or cast iron is generally used, and when weight reduction is required, an aluminum alloy or the like is used, and as a special material, pure titanium, magnesium alloy, or the like may be used. The lightweight flange is
It is used to reduce the load on the motor when the grindstone rotates. The purpose of using the flange is to ensure cutting accuracy, and the cutting accuracy can be ensured by holding the grindstone so as not to cause axial distortion. Also,
In order to achieve high-precision processing, it is important that the material has high strength, and further that high specific strength (tensile strength / density) is important.
【０００３】[0003]
【発明が解決しようとする課題】砥石を使用する際、そ
の周速度が高速になると、基台の材料として引張強度が
高く、かつ密度が小さい、つまり比強度の高い素材が求
められる。例えば、鋼のような材料のフランジでは密度
が大きく重いため、高周速度で回転させるのはあまり適
当でない。また、高周速度で使用する砥石は、回転中に
遠心力により外径が伸び、遠心破壊する恐れがある。そ
のため、回転中の外径の伸びをいかに小さくするかが、
遠心破壊強度を高め、安全性を高めるための課題とな
る。この解決方法として、本出願人が提案した特開２０
０１−１０５３２８号公報に記載される高速研削用超砥
粒砥石がある。この砥石は、高周速度で使用するための
砥石であり、基台の素材としてチタン合金を採用したも
のである。When using a grindstone, when the peripheral speed becomes high, a material having a high tensile strength and a low density, that is, a material having a high specific strength is required as a material for the base. For example, flanges made of materials such as steel are not suitable for rotation at high peripheral speeds due to their high density and heavy weight. Further, a grindstone used at a high peripheral speed may be centrifugally broken due to an increase in outer diameter due to centrifugal force during rotation. Therefore, how to reduce the extension of the outer diameter during rotation is
This is an issue for enhancing the centrifugal breaking strength and enhancing safety. As a solution to this problem, Japanese Unexamined Patent Application Publication No.
There is a superabrasive grindstone for high-speed grinding described in JP-A No. 01-105328. This grindstone is a grindstone for use at a high peripheral speed, and employs a titanium alloy as a material for the base.
【０００４】一方、前述のように上記の砥石を研削ある
いは切断装置に取り付けて保持するためにフランジを使
用するが、砥石の基台と同様の理由によりフランジの素
材にも砥石の基台と同等以上の比強度を有する素材が求
められる。また、上記のようなフランジを用いたタイプ
の砥石は、砥石の外径の伸びを抑えるために、砥石とそ
れを保持するフランジとの接触面における摩擦力を利用
し、遠心力がかかっても基台が伸びにくいようにして、
遠心破壊を防止することが考えられる。したがって、フ
ランジの素材は、比強度や比ヤング率（ヤング率／密
度）が砥石基台より高く、かつ、ヤング率が高いものが
望ましい。On the other hand, as described above, a flange is used to attach and hold the above-mentioned grindstone to a grinding or cutting device, but the flange material is also equivalent to the grindstone base for the same reason as the grindstone base. Materials having the above specific strength are required. Further, the type of grindstone using the flange as described above, in order to suppress the elongation of the outer diameter of the grindstone, utilizing the frictional force at the contact surface between the grindstone and the flange holding it, even if centrifugal force is applied. Make the base difficult to stretch,
It is possible to prevent centrifugal breakdown. Therefore, it is desirable that the material of the flange has a higher specific strength and a specific Young's modulus (Young's modulus / density) than the grindstone base and has a higher Young's modulus.
【０００５】比強度が高い材料としては、Ｃ−ＦＲＰが
ある。この素材は、密度が低く軽量であるが、ヤング率
が低く、さらには非常にコストが高くなるという問題が
ある。比ヤング率が高い材料としては、アルミニウム合
金、マグネシウム合金、チタンなどがある。しかしなが
ら、これらの材料は、軽量ではあるが比強度が小さいた
めに遠心破壊強度が小さく、高速回転には不向きであ
る。その上、アルミニウム合金とマグネシウム合金は、
ヤング率が小さく、砥石の外径の伸びを抑えるには不十
分である。本発明は以上のような問題を解決するもので
あり、高速研削切断加工を行う時に、砥石の基台の伸び
を抑えることができ、遠心破壊強度の高いフランジを提
供するものである。C-FRP is a material having a high specific strength. This material has a low density and is lightweight, but has a problem that the Young's modulus is low and the cost is very high. Examples of materials having a high specific Young's modulus include aluminum alloys, magnesium alloys, and titanium. However, these materials are lightweight but have low specific strength, and therefore have low centrifugal rupture strength and are not suitable for high speed rotation. Moreover, aluminum alloys and magnesium alloys
It has a small Young's modulus and is insufficient to suppress the elongation of the outer diameter of the grindstone. The present invention solves the above problems, and provides a flange having a high centrifugal fracture strength that can suppress the elongation of the base of a grindstone when performing high-speed grinding and cutting.
【０００６】[0006]
【課題を解決するための手段】本発明の高速研削加工用
砥石フランジの第１の特徴は、砥石周速度が１２０ｍ／
ｓｅｃ以上の研削条件下で用いられる砥石を固定するた
めのフランジであって、その素材をチタン合金としたこ
とである。純度の高いチタンは引張強度が高くないが、
チタン合金は引張強度の高いものが存在する。しかもチ
タン合金のヤング率と密度は、純チタンと同等である。
そのため、フランジの素材をチタン合金とすることは、
高速研削切断用砥石を保持する上で極めて有効である。The first feature of the grinding wheel flange for high speed grinding of the present invention is that the grinding wheel peripheral speed is 120 m /
It is a flange for fixing a grindstone used under a grinding condition of sec or more, and its material is a titanium alloy. High-purity titanium does not have high tensile strength,
Some titanium alloys have high tensile strength. Moreover, the Young's modulus and density of the titanium alloy are equivalent to those of pure titanium.
Therefore, using titanium alloy as the material for the flange
It is extremely effective in holding a grindstone for high-speed grinding and cutting.
【０００７】第２の特徴は、引張強度４００ＭＰａ以
上、ヤング率１００〜１２０ＭＰａ、密度４〜５ｇ／ｃ
ｍ３の機械的特性を有するチタン合金としたことであ
る。このような物性のチタン合金とすることでより遠心
破壊に対して強くなる。当該チタン合金の組成は、Ｔｉ
−６Ａｌ−４Ｖか、Ｔｉ−６ＡＬ−６Ｖ−２Ｓｎとする
のが良いが、それと同等以上の引張強度を有するもの
で、かつ、前記のヤング率や密度と同等であれば差し支
えない。The second characteristic is that the tensile strength is 400 MPa or more, the Young's modulus is 100 to 120 MPa, and the density is 4 to 5 g / c.
That is, the titanium alloy has a mechanical property of m 3 . By using a titanium alloy having such physical properties, it becomes stronger against centrifugal damage. The composition of the titanium alloy is Ti
It is preferable to use -6Al-4V or Ti-6AL-6V-2Sn, but there is no problem as long as it has a tensile strength equal to or higher than that and is equivalent to the above Young's modulus and density.
【０００８】また、本発明の高速研削加工用砥石フラン
ジの使用方法の特徴は、基台がチタン合金からなる砥石
を前述のフランジを用いて装置に取り付け、高速研削加
工または高速研削切断加工を行うことである。A feature of the method of using the grindstone flange for high-speed grinding of the present invention is that a grindstone whose base is made of titanium alloy is attached to the apparatus using the above-mentioned flange to perform high-speed grinding or high-speed grinding cutting. That is.
【０００９】[0009]
【発明の実施の形態】本発明の実施の形態は、実施例の
項で詳しく説明する。DETAILED DESCRIPTION OF THE INVENTION The embodiments of the present invention will be described in detail in the section of Examples.
【００１０】[0010]
【実施例】図１に、本発明のフランジを砥石に取り付け
た状態を示す。
（実施例１）外径２５０ｍｍ、穴径２５．４ｍｍ、超砥
粒層の厚み１ｍｍ、基台の厚み０．８ｍｍ、基台の材質
はＳＫＤの砥石を用意し、外径２２０ｍｍ、厚み１０ｍ
ｍ、材質がＴｉ−６Ａｌ−６Ｖ−２Ｓｎのフランジを図
１のように組み、砥石の周速度を４００ｍ／ｓで回転さ
せたときの砥石の基台に発生する半径方向の応力を解析
し、実際に前述の条件で高速回転させて砥石およびフラ
ンジの状態を確認した。EXAMPLE FIG. 1 shows a state in which the flange of the present invention is attached to a grindstone. (Example 1) Outer diameter 250 mm, hole diameter 25.4 mm, superabrasive grain layer thickness 1 mm, base thickness 0.8 mm, base material made of SKD grindstone, outer diameter 220 mm, thickness 10 m
m, a flange made of Ti-6Al-6V-2Sn is assembled as shown in FIG. 1, and the radial stress generated on the base of the grindstone when the peripheral speed of the grindstone is rotated at 400 m / s is analyzed, Actually, the state of the grindstone and the flange was confirmed by rotating at high speed under the above conditions.
【００１１】（実施例２）外径２５０ｍｍ、穴径２５．
４ｍｍ、超砥粒層の厚み１ｍｍ、基台の厚み０．８ｍ
ｍ、基台の材質はＴｉ−６Ａｌ−６Ｖ−２Ｓｎの砥石を
用意し、外径２２０ｍｍ、厚み１０ｍｍ、材質がＴｉ−
６Ａｌ−６Ｖ−２Ｓｎのフランジを図１のように組み、
砥石の周速度を４００ｍ／ｓで回転させたときの砥石の
基台に発生する半径方向の応力を解析し、実際に前述の
条件で高速回転させて砥石およびフランジの状態を確認
した。(Embodiment 2) Outer diameter 250 mm, hole diameter 25.
4 mm, superabrasive layer thickness 1 mm, base thickness 0.8 m
m, the material of the base is a Ti-6Al-6V-2Sn grindstone, the outer diameter is 220 mm, the thickness is 10 mm, and the material is Ti-
Assemble the flange of 6Al-6V-2Sn as shown in Fig. 1,
The radial stress generated on the base of the grindstone when the peripheral speed of the grindstone was rotated at 400 m / s was analyzed, and the state of the grindstone and the flange was confirmed by actually rotating the grindstone at high speed under the above conditions.
【００１２】（比較例１）外径２５０ｍｍ、穴径２５．
４ｍｍ、超砥粒層の厚み１ｍｍ、基台の厚み０．８ｍ
ｍ、基台の材質はＳＫＤの砥石を用意し、外径２２０ｍ
ｍ、厚み１０ｍｍ、材質がＣ−ＦＲＰのフランジを図１
のように組み、砥石の周速度を４００ｍ／ｓで回転させ
たときの砥石の基台に発生する半径方向の応力を解析
し、実際に前述の条件で高速回転させて砥石およびフラ
ンジの状態を確認した。(Comparative Example 1) Outer diameter 250 mm, hole diameter 25.
4 mm, superabrasive layer thickness 1 mm, base thickness 0.8 m
m, the material of the base is SKD grindstone, outer diameter 220m
m, thickness 10 mm, material C-FRP flange Fig. 1
As shown in the above, the radial stress generated on the base of the grindstone when the grindstone's peripheral speed is rotated at 400 m / s is analyzed, and the grindstone and the flange are actually rotated at high speed under the above conditions. confirmed.
【００１３】（比較例２）外径２５０ｍｍ、穴径２５．
４ｍｍ、超砥粒層の厚み１ｍｍ、基台の厚み０．８ｍ
ｍ、基台の材質はＴｉ−６Ａｌ−６Ｖ−２Ｓｎの砥石を
用意し、外径２２０ｍｍ、厚み１０ｍｍ、材質がＣ−Ｆ
ＲＰのフランジを図１のように組み、砥石の周速度を４
００ｍ／ｓで回転させたときの砥石の基台に発生する半
径方向の応力を解析し、実際に前述の条件で高速回転さ
せて砥石およびフランジの状態を確認した。(Comparative Example 2) Outer diameter 250 mm, hole diameter 25.
4 mm, superabrasive layer thickness 1 mm, base thickness 0.8 m
m, the material of the base is a Ti-6Al-6V-2Sn grindstone, the outer diameter is 220 mm, the thickness is 10 mm, and the material is C-F.
Assemble the RP flange as shown in Fig. 1 and set the grinding wheel peripheral speed to 4
The stress in the radial direction generated on the base of the grindstone when rotated at 00 m / s was analyzed, and the state of the grindstone and the flange was confirmed by actually rotating at high speed under the above-mentioned conditions.
【００１４】（解析試験）表１に各材料の機械的性質を
示す。(Analysis test) Table 1 shows the mechanical properties of each material.
【００１５】[0015]
【表１】 [Table 1]
【００１６】解析した結果を図２に示す。前述の条件で
砥石を高速回転させたときの基台にかかる半径方向応力
の最大値を縦軸に示す。この結果より、実施例１と比較
例１の比較、実施例２と比較例２の比較をすると、基台
の材質がＳＫＤ、チタン合金のいずれの場合も、フラン
ジをＣ−ＦＲＰとするよりチタン合金とするほうが、基
台に発生する応力を低減できることがわかった。チタン
合金は、Ｃ−ＦＲＰより比ヤング率が小さいにもかかわ
らず、基台の応力を低減する効果が高くなっている。こ
の理由として、Ｃ−ＦＲＰよりもチタン合金の方がヤン
グ率が高いことが考えられる。基台とフランジを固定す
るためにボルトによって固定している。そのため、砥石
を高速回転させて基台が外周方向に伸びる力がかかった
時に、フランジにはボルトおよび基台との摩擦力を介し
て外周方向に伸ばそうとする力がかかる。しかし、チタ
ン合金のフランジはヤング率が高いので変形量が小さく
なり、基台が伸びようとする力を抑えることができ、基
台が遠心破壊するのを防止できる。The results of the analysis are shown in FIG. The maximum value of the radial stress applied to the base when the grindstone is rotated at high speed under the above conditions is shown on the vertical axis. From these results, when comparing Example 1 with Comparative Example 1 and comparing Example 2 with Comparative Example 2, titanium was used rather than C-FRP for the flange, regardless of whether the base material was SKD or titanium alloy. It was found that the alloy can reduce the stress generated in the base. Although the titanium alloy has a smaller specific Young's modulus than C-FRP, the effect of reducing the stress of the base is high. It is considered that the reason for this is that the titanium alloy has a higher Young's modulus than C-FRP. It is fixed by bolts to fix the base and flange. Therefore, when the grindstone is rotated at a high speed and a force is applied to the base so as to extend in the outer peripheral direction, a force is applied to the flange so as to extend in the outer peripheral direction through frictional force between the flange and the base. However, since the flange of titanium alloy has a high Young's modulus, the amount of deformation is small, the force that the base is trying to extend can be suppressed, and the base can be prevented from being fractured by centrifugal force.
【００１７】上記の各実施例および各比較例の条件にお
いて、それぞれの基台の引張強度に対する基台に発生す
る応力の大きさを図３に示す。縦軸は、基台に発生する
応力と引張強度との比率を表しており、この数値が高い
ほど基台は遠心破壊しやすいことを表す。この結果よ
り、実施例１と比較例１の比較、実施例２と比較例２の
比較をすると、基台の材質がＳＫＤ、チタン合金のいず
れの場合もフランジをＣ−ＦＲＰとするより、チタン合
金とするほうが、基台が遠心破壊しにくくなることがわ
かる。基台が遠心破壊するかどうかは、基台に発生する
応力と引張強度との比率が１を超えるかどうかが目安に
なる。FIG. 3 shows the magnitude of the stress generated in the base with respect to the tensile strength of each base under the conditions of each of the examples and the comparative examples. The vertical axis represents the ratio of the stress generated in the base to the tensile strength, and the higher this value is, the easier the base is to break due to centrifugal force. From these results, comparing Example 1 with Comparative Example 1 and comparing Example 2 with Comparative Example 2, it was found that titanium was used in the case where the base material was SKD or titanium alloy rather than the flange being C-FRP. It can be seen that the alloy makes it more difficult for the base to be centrifugally broken. Whether or not the base is subjected to centrifugal failure depends on whether or not the ratio of the stress generated in the base to the tensile strength exceeds 1.
【００１８】（破壊試験）次に、上記各実施例および各
比較例について、実際に高速回転させて基台が永久歪み
を発生するかどうかの試験を行った。図１に示すよう
に、２枚のフランジで砥石を挟み込むように固定し、砥
石周速度２００ｍ／ｓｅｃ、２５０ｍ／ｓｅｃ、３００
ｍ／ｓｅｃ、３５０ｍ／ｓｅｃ、４００ｍ／ｓｅｃ、４
５０ｍ／ｓｅｃにて各１０分間連続で回転させ、フラン
ジを取り除いた時の基台の歪み量を測定した。その測定
結果を表２に示す。(Destruction Test) Next, with respect to each of the above-mentioned Examples and Comparative Examples, a test was conducted by actually rotating at a high speed to determine whether or not the base would cause permanent set. As shown in FIG. 1, two flanges are fixed so that the grindstone is sandwiched, and the grindstone peripheral speed is 200 m / sec, 250 m / sec, 300
m / sec, 350 m / sec, 400 m / sec, 4
It was continuously rotated at 50 m / sec for 10 minutes each, and the strain amount of the base when the flange was removed was measured. The measurement results are shown in Table 2.
【００１９】[0019]
【表２】 [Table 2]
【００２０】実施例１と比較例１を比較して、基台がＳ
ＫＤの場合、チタン合金のフランジを使用したものであ
れば、３００ｍ／ｓｅｃでも歪みが発生せず、高速回転
させることが可能になる。また、実施例２と比較例２を
比較して、基台がチタン合金の場合、チタン合金のフラ
ンジを使用すればＣ−ＦＲＰのフランジと比較して、４
５０ｍ／ｓｅｃでも歪みが発生せず、高速研削切断加工
により適していることがわかった。Comparing Example 1 and Comparative Example 1, the base is S
In the case of KD, if a flange made of a titanium alloy is used, distortion does not occur even at 300 m / sec, and it becomes possible to rotate at high speed. In addition, comparing Example 2 and Comparative Example 2, when the base is a titanium alloy, if a flange of titanium alloy is used, compared with the flange of C-FRP, 4
It was found that no distortion was generated even at 50 m / sec and it was more suitable for high-speed grinding and cutting.
【００２１】[0021]
【発明の効果】以上説明したように、高速研削切断加工
用の砥石フランジとして、チタン合金を素材とするフラ
ンジにすることで、砥石の外径の伸びを抑えることがで
き、砥石の破壊を防止することができる。また、基台が
チタン合金からなる砥石を上記のフランジと組み合わせ
て使用することにより、砥石の外径の伸びを抑えること
ができ、砥石の遠心破壊を防止することができる。As described above, by using a flange made of titanium alloy as the grindstone flange for high-speed grinding and cutting, it is possible to prevent the outer diameter of the grindstone from expanding and prevent the grindstone from breaking. can do. Further, by using a grindstone whose base is made of titanium alloy in combination with the above-mentioned flange, it is possible to suppress the elongation of the outer diameter of the grindstone and prevent the centrifugal destruction of the grindstone.
【図１】本発明のフランジを砥石に取り付けた状態を示
す斜視図。FIG. 1 is a perspective view showing a state in which a flange of the present invention is attached to a grindstone.
【図２】解析結果を示すグラフ。FIG. 2 is a graph showing analysis results.
【図３】基台の引張強度に対する基台に発生する応力の
大きさを示すグラフ。FIG. 3 is a graph showing the magnitude of stress generated in the base with respect to the tensile strength of the base.
１ 砥石 ２ フランジ ３ フランジ締め付け穴 Ｄｃ 砥石外径 Ｄｆ フランジ外径 1 whetstone 2 flange 3 Flange tightening holes Dc whetstone outer diameter Df flange outer diameter
Claims (4)
削条件下で用いられる砥石を固定するためのフランジで
あって、 チタン合金を素材とすることを特徴とする高速研削加工
用砥石フランジ。1. A grindstone flange for high-speed grinding, which is a flange for fixing a grindstone used under grinding conditions with a grindstone peripheral speed of 120 m / sec or more, and is made of a titanium alloy.
００〜１２０ＭＰａ、密度４〜５ｇ／ｃｍ３の機械的特
性を有するチタン合金を素材とする請求項１記載の高速
研削加工用砥石フランジ。2. A tensile strength of 400 MPa or more and a Young's modulus of 1
The grindstone flange for high speed grinding according to claim 1, which is made of a titanium alloy having mechanical properties of 0 to 120 MPa and a density of 4 to 5 g / cm 3 .
−４ＶまたはＴｉ−６Ａｌ−６Ｖ−２Ｓｎである請求項
１または２記載の高速研削加工用砥石フランジ。3. The composition of the titanium alloy is Ti-6Al.
-4V or Ti-6Al-6V-2Sn, The grindstone flange for high-speed grinding according to claim 1 or 2.
１〜３のいずれかに記載のフランジを用いて装置に取り
付け、高速研削加工または高速研削切断加工を行う方
法。4. A method in which a grindstone whose base is made of a titanium alloy is attached to an apparatus using the flange according to any one of claims 1 to 3, and high-speed grinding or high-speed grinding cutting is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001263419A JP2003071727A (en) | 2001-08-31 | 2001-08-31 | Grinding wheel flange for high speed grinding and working method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001263419A JP2003071727A (en) | 2001-08-31 | 2001-08-31 | Grinding wheel flange for high speed grinding and working method using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003071727A true JP2003071727A (en) | 2003-03-12 |
Family
ID=19090176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001263419A Pending JP2003071727A (en) | 2001-08-31 | 2001-08-31 | Grinding wheel flange for high speed grinding and working method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003071727A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000301483A (en) * | 1999-04-16 | 2000-10-31 | Asahi Diamond Industrial Co Ltd | Blade with hub and manufacture thereof |
| JP2001105328A (en) * | 1999-08-02 | 2001-04-17 | Allied Material Corp | Super-abrasive grinding wheel for high-speed grinding |
| JP2001105342A (en) * | 1999-10-05 | 2001-04-17 | Sekisui Chem Co Ltd | Drain trap fixing jig and method of mounting the same |
| JP2001105310A (en) * | 1999-09-30 | 2001-04-17 | Toyoda Mach Works Ltd | Grinding wheel locking structure to rotary main spindle |
-
2001
- 2001-08-31 JP JP2001263419A patent/JP2003071727A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000301483A (en) * | 1999-04-16 | 2000-10-31 | Asahi Diamond Industrial Co Ltd | Blade with hub and manufacture thereof |
| JP2001105328A (en) * | 1999-08-02 | 2001-04-17 | Allied Material Corp | Super-abrasive grinding wheel for high-speed grinding |
| JP2001105310A (en) * | 1999-09-30 | 2001-04-17 | Toyoda Mach Works Ltd | Grinding wheel locking structure to rotary main spindle |
| JP2001105342A (en) * | 1999-10-05 | 2001-04-17 | Sekisui Chem Co Ltd | Drain trap fixing jig and method of mounting the same |
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