JPH08216003A - Grinding tool for drilling - Google Patents
Grinding tool for drillingInfo
- Publication number
- JPH08216003A JPH08216003A JP5196695A JP5196695A JPH08216003A JP H08216003 A JPH08216003 A JP H08216003A JP 5196695 A JP5196695 A JP 5196695A JP 5196695 A JP5196695 A JP 5196695A JP H08216003 A JPH08216003 A JP H08216003A
- Authority
- JP
- Japan
- Prior art keywords
- grinding tool
- drilling
- tip
- tool
- hole
- 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
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
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/143—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling lens-drilling machines
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光学レンズ等の光学ガ
ラス製品に貫通孔を穿つ研削工具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding tool for punching through holes in optical glass products such as optical lenses.
【０００２】[0002]
【従来の技術】ミラーレンズの中心部に貫通孔を穿ち、
ミラー面での反射光を再び貫通孔に導く光路、あるいは
この逆の光路を設定することにより長い光路長を実現で
き、この結果、焦点距離の長い光学系を設計できるなど
の利点がある。2. Description of the Related Art A through hole is formed in the center of a mirror lens,
A long optical path length can be realized by setting an optical path that guides the light reflected on the mirror surface to the through hole again, or an optical path opposite to this, and as a result, an optical system having a long focal length can be designed.
【０００３】図１はミラーレンズ１１の一例を示す断面
図である。このようなミラーレンズは、研磨によりレン
ズを製造後、その中心部に貫通孔１３を穿ち、さらにミ
ラー面に面取り１５を加工し、ついで、アルミニウム等
の反射材料を凸曲面に真空蒸着して形成していた。FIG. 1 is a sectional view showing an example of a mirror lens 11. Such a mirror lens is formed by manufacturing a lens by polishing, forming a through hole 13 in the center thereof, further processing a chamfer 15 on the mirror surface, and then vacuum-depositing a reflective material such as aluminum on a convex curved surface. Was.
【０００４】図３は、従来の具体的な加工方法を示す説
明断面図である。まず、レンズ１１′の裏面にガラスヤ
トイ２９（捨てガラス板）を貼り付け、レンズ１１′を
チャック２７に固定する。FIG. 3 is an explanatory sectional view showing a conventional specific processing method. First, the glass toy 29 (discarded glass plate) is attached to the back surface of the lens 11 ′, and the lens 11 ′ is fixed to the chuck 27.
【０００５】この状態で、レンズ１１′をゆっくり回し
つつ、高速回転する円筒状のダイヤモンド砥石４１を矢
印Ａ方向（切込み方向）に近付け、切込みを開始する。
切込みを続け、レンズ１１′を貫通し、さらに若干ガラ
スヤトイ２９を切り込んだ状態で孔開け加工を終了す
る。ここで、ガラスヤトイ２９は、レンズ１１′のピリ
（貫通孔１３の端部のカケ）の発生を防止するためのも
のであり、仮りにガラスヤトイ２９を貼り付けずに孔開
け加工を行なうと、大きなピリが発生して不良品を生じ
やすい。しかし、ガラスヤトイ２９は本来必要ない無駄
な消耗部品であり、また、貼り付け作業が必要となり作
業効率が悪かった。In this state, while slowly rotating the lens 11 ', the cylindrical diamond grindstone 41 rotating at high speed is brought closer to the direction of arrow A (cutting direction) to start cutting.
The cutting is continued, the lens 11 'is penetrated, and the glass toy 29 is slightly cut, and the drilling process is completed. Here, the glass toy 29 is for preventing the occurrence of a pili (chip at the end portion of the through hole 13) of the lens 11 ′, and if the glass toy 29 is pierced without being attached, it becomes large. Pills tend to occur, resulting in defective products. However, the glass toy 29 is a wasteful consumable component that is not originally needed, and the work of attaching is required, resulting in poor work efficiency.
【０００６】また、上記の従来法では、孔開け終了後
に、面取り治具と遊離砥粒によって面取り加工し、面取
り１５（図１参照）を形成していた。この作業は手作業
であり、作業効率が非常に悪かった。上記問題点は、レ
ンズ以外のガラス製光学部品においても共通した解決課
題である。Further, in the above-mentioned conventional method, after completion of boring, the chamfering jig (15) (see FIG. 1) is formed by chamfering with a chamfering jig and loose abrasive grains. This work was a manual work, and the work efficiency was very poor. The above problem is a common problem to be solved in glass optical components other than lenses.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、光学ガラス
製品の孔開け加工において、最終貫通面の端部のピリ発
生を防止することを目的とするものである。本発明は、
光学ガラス製品の孔開け加工において、初期切込み面の
面取り作業の効率化を目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to prevent the generation of a fringe at the end of the final penetrating surface in the process of making holes in an optical glass product. The present invention
It is intended to improve the efficiency of the chamfering work of the initial cut surface in the punching process of the optical glass product.
【０００８】[0008]
【課題を解決するための手段】本発明の第１の孔開け用
研削工具は、孔開け用工具に固定され、回転しつつ光学
ガラス製品に押し当てられ、該光学ガラス製品に貫通孔
を穿つ孔開け用研削工具であって、研削工具先端部に、
該先端部が縮径する方向にテーパ部が形成されているこ
とを特徴とする。A first drilling grinding tool of the present invention is fixed to a drilling tool and is pressed against an optical glass product while rotating to form a through hole in the optical glass product. A grinding tool for drilling, at the tip of the grinding tool,
It is characterized in that a taper portion is formed in a direction in which the tip portion is reduced in diameter.
【０００９】本発明の第２の孔開け用研削工具は、孔開
け用工具に固定され、回転しつつ光学ガラス製品に押し
当てられ、該光学ガラス製品に貫通孔を穿つ孔開け用研
削工具であって、研削工具基部に、研削工具先端部の径
に比較して膨径する方向にテーパ部が形成されているこ
とを特徴とする。A second drilling tool for drilling according to the present invention is a drilling tool fixed to a drilling tool, pressed against an optical glass product while rotating, and punching a through hole in the optical glass product. It is characterized in that a taper portion is formed in the base of the grinding tool in a direction in which the diameter of the tip of the grinding tool is larger than that of the tip of the grinding tool.
【００１０】本発明の第３の孔開け用研削工具は、上記
第１および第２の発明の双方の特徴を兼ね備えたもので
あり、両者の研削先端部におけるテーパ構造ならびに研
削工具基部におけるテーパ構造の双方を有している孔開
け用研削工具である。A third grinding tool for boring according to the present invention has the features of both the first and second inventions, and has a taper structure at the grinding tip and a taper structure at the base of the grinding tool. It is a grinding tool for drilling which has both of the above.
【００１１】[0011]
【実施例】図２は、本発明の孔開け用研削工具およびこ
れを用いた孔開け加工方法の実施例を示す説明断面図で
ある。片面が平面、もう一面が凸面の平凸タイプのレン
ズ１１′をチャック２７に固定する。なお、レンズとし
ては、平凹レンズ、凹凸レンズ（メニスカルレンズ）な
どいずれのタイプのものでもよい。EXAMPLE FIG. 2 is an explanatory sectional view showing an example of a drilling tool for drilling and a drilling method using the same according to the present invention. A plano-convex type lens 11 ′, one surface of which is flat and the other surface of which is convex, is fixed to the chuck 27. The lens may be any type such as a plano-concave lens and a concave-convex lens (meniscal lens).
【００１２】孔開け工具２３には、ダイヤモンド砥石３
１（研削工具）が固定されている。ダイヤモンド砥石３
１は、中心部に空胴２５を有し、ここがクーラント液の
流路となる。ダイヤモンド砥石３１は、先端部におい
て、先端部が縮径する方向の先端テーパ部３３が形成さ
れており、一方、孔開け工具２３に固定する側の基部に
おいて基部テーパ部３５を形成している。The drilling tool 23 has a diamond grindstone 3
1 (grinding tool) is fixed. Diamond whetstone 3
No. 1 has a cavity 25 in the center, which serves as a coolant liquid flow path. The diamond grindstone 31 has a tip taper portion 33 formed in the tip portion in a direction in which the tip portion is reduced in diameter, and a base taper portion 35 formed on the base portion on the side fixed to the drilling tool 23.
【００１３】チャック２７に固定したレンズ１１′をゆ
っくりと回転し、孔開け工具２３に固定した研削用のダ
イヤモンド砥石３１を高速回転して矢印Ａ方向に近付け
て切込みを開始し、これと同時に、空胴２５および供給
ノズル２１からクーラント液を切込み面に供給する。The lens 11 'fixed to the chuck 27 is slowly rotated, and the diamond grinding stone 31 for grinding fixed to the drilling tool 23 is rotated at high speed to approach in the direction of arrow A to start cutting. At the same time, Coolant is supplied to the cut surface from the cavity 25 and the supply nozzle 21.
【００１４】徐々に切込みを進め、ついにはダイヤモン
ド砥石３１の先端部がレンズ１１′を突き抜けて貫通孔
１３（図１参照）が形成される。このとき、ダイヤモン
ド砥石３１に先端テーパ部３３が存在すると、最終的な
貫通孔１３の貫通側端面にピリが発生することが防止さ
れる。これは、以下のような作用機構によると考えられ
る。The cutting is gradually advanced, and finally the tip of the diamond grindstone 31 penetrates the lens 11 'to form the through hole 13 (see FIG. 1). At this time, if the tip end taper portion 33 is present in the diamond grindstone 31, it is possible to prevent the final occurrence of the piercing on the through-side end surface of the through hole 13. It is considered that this is due to the following mechanism of action.
【００１５】すなわち、まず、ダイヤモンド砥石３１の
先端面３１ａ（図２参照）がレンズ１１′を突き抜けて
貫通する。このときは一気にガラスが崩壊するため、そ
の衝撃は図３に示した従来例と同様であり、貫通部の周
辺に大きなピリが発生する場合もある。しかし、先端面
３１ａによって形成される貫通孔は、最終的な貫通孔１
３の内径よりも小さいため、その後の先端テーパ部３３
による研削により発生したピリも消失する。また、先端
テーパ部３３により研削時には徐々にガラスを削るため
衝撃が小さく、ピリの発生が抑制される。That is, first, the tip end surface 31a (see FIG. 2) of the diamond grindstone 31 penetrates through the lens 11 '. At this time, the glass collapses all at once, so the impact is the same as in the conventional example shown in FIG. 3, and a large pit may occur around the penetration portion. However, the through hole formed by the tip surface 31a is the final through hole 1
Since it is smaller than the inner diameter of 3, the tip taper portion 33 after that
Pills generated by grinding due to grinding also disappear. Moreover, since the glass is gradually scraped during grinding by the tip tapered portion 33, the impact is small, and the occurrence of pills is suppressed.
【００１６】目的とする貫通孔１３が形成されると同時
に、あるいは形成された後に更に切込み方向Ａにダイヤ
モンド砥石３１を前進させると、基部テーパ部３５がレ
ンズ１１′の貫通孔１３の端面に当たり、面取り１５を
形成する。このような図２に示したダイヤモンド砥石３
１を用いることにより、貫通孔１３の切込みと面取り１
５の形成を一連の作業により行なうことができる。When the diamond grindstone 31 is further advanced in the cutting direction A at the same time that the desired through hole 13 is formed or after the desired through hole 13 is formed, the base taper portion 35 hits the end surface of the through hole 13 of the lens 11 '. The chamfer 15 is formed. Such a diamond grindstone 3 shown in FIG.
1 is used, the notch of the through hole 13 and the chamfering 1
5 can be formed by a series of operations.
【００１７】以上の説明では、レンズないしはミラーレ
ンズの加工方法を中心として説明したが、本発明の孔開
け用砥石（研削工具）および加工方法は、他の光学ガラ
ス製品にも適用できる。In the above description, the method for processing the lens or the mirror lens has been mainly described, but the grindstone for grinding (grinding tool) and the processing method of the present invention can be applied to other optical glass products.
【００１８】[0018]
【発明の効果】本発明によれば、孔開け用研削工具に先
端テーパ部を設けることにより、ピリの発生を防止して
貫通孔を形成することができる。また、本発明によれ
ば、孔開け用研削工具に基部テーパ部を設けることによ
り、貫通孔の形成と同時に面取り加工を行なうことがで
きる。さらに本発明によれば、孔開け用研削工具に先端
テーパ部と基部テーパ部との双方を設けることにより、
ピリの発生を防止して貫通孔を形成すると同時に面取り
加工を行なうことができる。According to the present invention, the through-hole can be formed while preventing the occurrence of pills by providing the tip end tapered portion in the grinding tool for boring. Further, according to the present invention, the chamfering can be performed simultaneously with the formation of the through hole by providing the base taper portion in the grinding tool for boring. Furthermore, according to the present invention, by providing both the tip taper portion and the base taper portion in the drilling grinding tool,
The chamfering process can be performed at the same time as forming the through hole while preventing the generation of the ridge.
【図１】本発明で製造されるレンズの一例を示す断面図
である。FIG. 1 is a cross-sectional view showing an example of a lens manufactured by the present invention.
【図２】本発明の孔開け用研削工具およびこれを用いた
孔開け加工方法を示す説明図である。FIG. 2 is an explanatory view showing a drilling tool for drilling and a drilling method using the same according to the present invention.
【図３】従来の孔開け用砥石およびこれを用いた孔開け
加工方法を示す説明図である。FIG. 3 is an explanatory view showing a conventional whetstone for boring and a boring method using the whetstone.
１１ 孔開きレンズ １１′ レンズ １３ 貫通孔 １５ 面取り ２１ 供給ノズル ２３ 孔開け工具 ２５ 空胴 ２７ チャック ２９ ガラスヤトイ ３１ ダイヤモンド砥石 ３３ 先端テーパ部 ３５ 基部テーパ部 ４１ ダイヤモンド砥石 11 Perforated Lens 11 'Lens 13 Through Hole 15 Chamfer 21 Supply Nozzle 23 Hole Drilling Tool 25 Cavity 27 Chuck 29 Glassy Toy 31 Diamond Grindstone 33 Tip Tapered Section 35 Base Tapered Section 41 Diamond Grindstone
Claims (3)
学ガラス製品に押し当てられ、該光学ガラス製品に貫通
孔を穿つ孔開け用研削工具であって、研削工臭先端部
に、該先端部が縮径する方向にテーパ部が形成されてい
ることを特徴とする孔開け用研削工具。1. A drilling tool fixed to a drilling tool, pressed against an optical glass product while rotating, and having a through hole formed in the optical glass product, wherein the tip of a grinder has a odor. A grinding tool for drilling, wherein a taper portion is formed in a direction in which the tip portion is reduced in diameter.
学ガラス製品に押し当てられ、該ガラス製品に貫通孔を
穿つ孔開け用研削工具であって、研削工具基部に、研削
工具先端部の径に比較して膨径する方向にテーパ部が形
成されていることを特徴とする孔開け用研削工具。2. A drilling tool fixed to a drilling tool, pressed against an optical glass product while rotating, and having a through hole formed in the glass product, wherein the grinding tool base is provided with a grinding tool tip. A grinding tool for drilling, characterized in that a tapered portion is formed in a direction in which the diameter is expanded as compared with the diameter of the hole.
学ガラス製品に押し当てられ、該ガラス製品に貫通孔を
穿つ孔開け用研削工具であって、研削工具先端部に、該
先端部が縮径する方向にテーパ部が形成されるととも
に、研削工具基部に、研削工具先端部の径に比較して膨
径する方向にテーパ部が形成されていることを特徴とす
る孔開け用研削工具。3. A drilling tool fixed to a drilling tool, pressed against an optical glass product while rotating and punching a through hole in the glass product, wherein the tip of the grinding tool is the tip of the grinding tool. A tapered portion is formed in a direction in which the diameter of the grinding tool is reduced, and a tapered portion is formed in the base of the grinding tool in a direction in which the diameter is expanded as compared with the diameter of the tip of the grinding tool. tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196695A JPH08216003A (en) | 1995-02-16 | 1995-02-16 | Grinding tool for drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196695A JPH08216003A (en) | 1995-02-16 | 1995-02-16 | Grinding tool for drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08216003A true JPH08216003A (en) | 1996-08-27 |
Family
ID=12901618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5196695A Pending JPH08216003A (en) | 1995-02-16 | 1995-02-16 | Grinding tool for drilling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08216003A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003094301A (en) * | 2001-09-19 | 2003-04-03 | Tamagawa Seiki Co Ltd | Grinding wheel edge structure for coring |
| FR2856620A1 (en) * | 2003-06-27 | 2004-12-31 | Essilor Int | Drilling synthetic organic ophthalmic lenses to make frameless spectacles, penetrates pile of lenses simultaneously, followed by hole edge-smoothing processes |
| CN103128674A (en) * | 2011-11-22 | 2013-06-05 | 深圳市常兴金刚石磨具有限公司 | Diamond abrasive tool in multilevel various granularity zone and processing technology thereof |
-
1995
- 1995-02-16 JP JP5196695A patent/JPH08216003A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003094301A (en) * | 2001-09-19 | 2003-04-03 | Tamagawa Seiki Co Ltd | Grinding wheel edge structure for coring |
| FR2856620A1 (en) * | 2003-06-27 | 2004-12-31 | Essilor Int | Drilling synthetic organic ophthalmic lenses to make frameless spectacles, penetrates pile of lenses simultaneously, followed by hole edge-smoothing processes |
| CN103128674A (en) * | 2011-11-22 | 2013-06-05 | 深圳市常兴金刚石磨具有限公司 | Diamond abrasive tool in multilevel various granularity zone and processing technology thereof |
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