JPS6130861B2 - - Google Patents
Info
- Publication number
- JPS6130861B2 JPS6130861B2 JP11409179A JP11409179A JPS6130861B2 JP S6130861 B2 JPS6130861 B2 JP S6130861B2 JP 11409179 A JP11409179 A JP 11409179A JP 11409179 A JP11409179 A JP 11409179A JP S6130861 B2 JPS6130861 B2 JP S6130861B2
- Authority
- JP
- Japan
- Prior art keywords
- abrasive grains
- cup wheel
- bond material
- tip
- wheel
- 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
Links
- 239000006061 abrasive grain Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000011521 glass Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
【発明の詳細な説明】
本発明はガラスやセラミツク等の硬脆物質用カ
ーブジエネレータのカツプホイールに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cup wheel for a curved generator for hard and brittle materials such as glass and ceramics.
カツプホイールは円筒状の砥石保持台７と、断
面がほぼ半円形の砥石２とから成る。砥石２はダ
イヤモンド等の砥粒をメタルボンドで焼結したも
のである。 The cup wheel consists of a cylindrical grindstone holder 7 and a grindstone 2 having a substantially semicircular cross section. The whetstone 2 is made by sintering abrasive grains such as diamond with a metal bond.
第２図にはこうしたカツプホイールによるガラ
ス３の研削状態が示され、そこではカツプホイー
ル１，２とガラス３とを回転させることにより、
ガラス表面はカツプホイールとガラスの回転軸の
なす角度αとカツプホイールの径とによつて決定
される曲面に研削される。尚、このとき砥石２は
その側面部２ａでガラス３を削り取り、頂点２ｂ
付近で所定の曲率に仕上げている。 FIG. 2 shows the state in which the glass 3 is ground by such a cup wheel, where by rotating the cup wheels 1, 2 and the glass 3,
The glass surface is ground into a curved surface determined by the angle α between the cup wheel and the axis of rotation of the glass and the diameter of the cup wheel. At this time, the grindstone 2 scrapes the glass 3 with its side surface 2a, and the apex 2b
The area is finished to a specified curvature.
この焼結砥石２の断面形状は第３図に示す如く
ほぼ半円形であるが、通常研削に使用される部分
はその頂部で、θ≦90゜の範囲であり、最大に使
用しても≦90゜までの範囲である。（θは研削に
使用される領域の中心角）。従つて、上述のθの
範囲以外はダイヤモンド等の砥粒を含有している
にもかかわらず、使用されていない。上述のθの
範囲が摩耗すると、上述の未使用の砥粒が残存す
るままカツプホイールを廃棄していた。 The cross-sectional shape of this sintered whetstone 2 is approximately semicircular as shown in Fig. 3, but the part normally used for grinding is the top, which is in the range of θ≦90°, and even when used at maximum, ≦ The range is up to 90°. (θ is the central angle of the area used for grinding). Therefore, even though abrasive grains such as diamond are contained, they are not used outside the above-mentioned range of θ. When the above-mentioned range of θ is worn out, the cup wheel is discarded with the above-mentioned unused abrasive grains remaining.
上記事情をもとにしてなされた本発明の目的
は、未使用の砥粒が残存するまま廃棄することの
ない硬脆物質用カツプホイールを提供することで
ある。 An object of the present invention, which was made based on the above circumstances, is to provide a cup wheel for hard and brittle materials that does not have to be discarded with unused abrasive grains remaining.
上記目的を達成するため、本発明においては、
カツプホイールにおいて砥石の頂部付近に砥粒を
高密度に配置し、周辺部には砥粒を殆ど又は全く
配置しないこととしたのである。 In order to achieve the above object, in the present invention,
In the cup wheel, abrasive grains are arranged at a high density near the top of the grinding wheel, and few or no abrasive grains are arranged at the periphery.
以下、本発明の実施例を図面に沿つて説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第４図は鉄や真鍮等の金属製である電鋳砥石保
持台４を示しており、保持台４の先端部４ａはほ
ぼ単一曲率の凸曲面になつている。この先端部４
ａ上に、第５図に示す如く、電鋳砥石５が形成さ
れる。この作製の一例を述べると、先ず先端部４
ａ以外の部分を絶縁材でマスクした保持台４をダ
イヤモンドや立方晶窒化硼素等の砥粒を分散して
含むスミフアミン酸浴の如きニツケル浴等の中に
浸漬配置する。この時先端部４ａが上方を向くよ
うにする。この保持台４を一方の電極とし、この
電極と浴中の他の電極との間に通電する。これに
より先端部４ａにはニツケルボンド材が析出する
と共にこの析出ニツケルボンド材中に砥粒が高密
度に共析し、ボンド材に強固に保持される。こう
して第４図に示す如く先端部４ａに電鋳砥石５が
形成される。もちろん、ボンド材としてはニツケ
ル以外の金属を用いることが出来る。 FIG. 4 shows an electroformed grindstone holder 4 made of metal such as iron or brass, and the tip 4a of the holder 4 has a convex curved surface with a substantially single curvature. This tip 4
As shown in FIG. 5, an electroformed grindstone 5 is formed on the surface a. To describe an example of this fabrication, first, the tip 4
The holder 4, whose parts other than a are masked with an insulating material, is placed immersed in a nickel bath such as a smifamine acid bath containing dispersed abrasive grains such as diamond or cubic boron nitride. At this time, the tip portion 4a should face upward. This holding table 4 is used as one electrode, and current is applied between this electrode and the other electrode in the bath. As a result, the nickel bond material is precipitated at the tip portion 4a, and abrasive grains are eutectoid at a high density in the precipitated nickel bond material, and are firmly held by the bond material. In this way, as shown in FIG. 4, an electroformed grindstone 5 is formed on the tip portion 4a. Of course, metals other than nickel can be used as the bonding material.
こうして形成された電鋳砥石５において、第６
図の拡大図に示す如く、θ＝90゜〜120゜の先端
部４ａの頂部領域に形成されたボンド材５ａ中に
は充分な量の砥粒が分布しているが、それより下
の領域即ち先端部４ａの側部に形成されたボンド
材５ｂ中には砥粒はほとんど存在しない。 In the electroformed grindstone 5 thus formed, the sixth
As shown in the enlarged view of the figure, a sufficient amount of abrasive grains are distributed in the bond material 5a formed in the top region of the tip 4a at θ = 90° to 120°, but in the region below That is, there are almost no abrasive grains in the bond material 5b formed on the side of the tip 4a.
この様なボンド材中の砥粒の分布は上述の如く
浴中に保持台４を先端部４ａを上に向けて配置す
るこにより達成できる。即ち、浴中の砥粒は上述
の先端部４ａの頂部には滞留し、その為にボンド
材中に共析するが、先端部４ａの側部には滞留し
得ないので側部に形成されたボンド材５ｂにはほ
とんど砥粒が含まれない。 Such distribution of abrasive grains in the bond material can be achieved by placing the holder 4 in the bath with the tip 4a facing upward, as described above. That is, the abrasive grains in the bath stay at the top of the tip 4a and are eutectoid in the bond material, but they cannot stay at the sides of the tip 4a, so they are formed on the sides. The bond material 5b contains almost no abrasive grains.
以上の説明において、電鋳砥石の厚さは任意
で、実施例ではその砥石が厚く、その厚さ方向に
多数砥粒を分布させたが、厚さを薄くしその表面
と砥粒が一層のみ存するようにしてもよい。 In the above explanation, the thickness of the electroformed whetstone is arbitrary; in the example, the whetstone is thick and a large number of abrasive grains are distributed in the thickness direction, but when the thickness is made thinner, only one layer of the surface and abrasive grains are distributed. It may be made to exist.
また、電鋳砥石は従来の焼結砥石の比べて砥粒
の保持力が極めて強固であるので、カツプホイー
ルの寿命が飛躍的に増大する。また、砥粒の密度
も従来の焼結砥石に比べ著しく高め得るので、研
削時間を短縮できる。 Furthermore, since the electroformed grindstone has an extremely strong ability to hold abrasive grains compared to a conventional sintered grindstone, the life of the cup wheel is dramatically increased. Furthermore, the density of the abrasive grains can be significantly increased compared to conventional sintered whetstones, so grinding time can be shortened.
以上の通り、本発明においては、通常研削に使
用される頂部付近に砥粒を配置したので、使用後
カツプホイールを廃棄しても、この廃棄したカツ
プホイールには高価な砥粒は含まれていないこと
から、無駄がなく経済的である。また、元々研削
に使用されていない周辺部には砥粒を配置してい
ないので、その分だけカツプホイールが安価に製
造される等の効果が奏されるのである。 As described above, in the present invention, the abrasive grains are placed near the top, which is normally used for grinding, so even if the cup wheel is discarded after use, the discarded cup wheel will not contain expensive abrasive grains. Since there is no waste, there is no waste and it is economical. Furthermore, since abrasive grains are not placed in the peripheral area that is not originally used for grinding, the cup wheel can be produced at a lower cost.
第１図は従来のカツプホイールの断面図、第２
図は第１のカツプホイールによるガラスの研削状
態を示す図、第３図は焼結砥石の断面形状を示す
図、第４図は本発明の一実施例の保持台の断面
図、第５図は本発明の一実施例の断面図、第６図
は第５図の部分拡大図である。
主要部分の符号の説明、４…砥石保持台、５…
電鋳砥石、５ａ…頂部ボンド材、５ｂ…側部ボン
ド材。
Figure 1 is a cross-sectional view of a conventional cup wheel, Figure 2 is a cross-sectional view of a conventional cup wheel.
Figure 3 shows the state of glass being ground by the first cup wheel, Figure 3 shows the cross-sectional shape of the sintered whetstone, Figure 4 is a cross-sectional view of a holding table according to an embodiment of the present invention, and Figure 5. 6 is a sectional view of one embodiment of the present invention, and FIG. 6 is a partially enlarged view of FIG. 5. Explanation of symbols of main parts, 4... Grinding wheel holder, 5...
Electroformed grindstone, 5a...Top bond material, 5b...Side bond material.
Claims (1)
ールにおいて、凸曲面上に形成されて砥石の頂部
においてメタルボンド材中に砥粒が高密度に分布
し、その周辺部においてメタルボンド材中にほと
んど砥粒が分布していないことを特徴とするカツ
プホイール。 ２ 特徴請求の範囲第１項に記載のカツプホイー
ルにおいて、前記頂部がその中心に対して張る中
心角が約90゜乃至120゜であることを特徴とする
カツプホイール。[Scope of Claims] 1. A cup wheel for a curved generator for hard and brittle materials, which is formed on a convex curved surface and has abrasive grains distributed in a metal bond material at a high density at the top of the grinding wheel, and metal bond material in the surrounding area. A cup wheel characterized by almost no abrasive grains distributed in the material. 2. A cup wheel according to claim 1, characterized in that the central angle subtended by the apex with respect to its center is approximately 90° to 120°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11409179A JPS5639869A (en) | 1979-09-07 | 1979-09-07 | Cup wheel for hard brittle substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11409179A JPS5639869A (en) | 1979-09-07 | 1979-09-07 | Cup wheel for hard brittle substance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5639869A JPS5639869A (en) | 1981-04-15 |
| JPS6130861B2 true JPS6130861B2 (en) | 1986-07-16 |
Family
ID=14628869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11409179A Granted JPS5639869A (en) | 1979-09-07 | 1979-09-07 | Cup wheel for hard brittle substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5639869A (en) |
-
1979
- 1979-09-07 JP JP11409179A patent/JPS5639869A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5639869A (en) | 1981-04-15 |
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