JPH07195261A - Spherical grinding method and device thereof - Google Patents
Spherical grinding method and device thereofInfo
- Publication number
- JPH07195261A JPH07195261A JP35202393A JP35202393A JPH07195261A JP H07195261 A JPH07195261 A JP H07195261A JP 35202393 A JP35202393 A JP 35202393A JP 35202393 A JP35202393 A JP 35202393A JP H07195261 A JPH07195261 A JP H07195261A
- Authority
- JP
- Japan
- Prior art keywords
- grinding wheel
- grinding
- work
- grindstone
- processing
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガラス，セラミックス
等の光学素子用高脆材料を曲面加工する方法および装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for processing curved surfaces of highly brittle materials for optical elements such as glass and ceramics.
【０００２】[0002]
【従来の技術】レンズ等の光学素子の加工方法として、
刊行物「光学素子加工技術」（光学工業技術協会Ｓ５
６．１０．１０発行）の第１９７頁「５．１ レンズ生
産工程」欄には、「リセスばり高速研磨」が記載されて
いる。ここには、球面加工工程として、球面研削、精研
削、みがきの３工程が示されている。図７および図８は
適用されるＣＧ（カーブジェネレーター）によるガラス
レンズの従来の球面研削方法を示す。図８はＣＧによる
球面研削装置の機構の概略を示すものであり、かかる球
面研削装置の既知の例としては、特公昭６１−３３６６
５公報および「光学素子加工技術」（光学工業技術協会
Ｓ５６．１０．１０発行）第１８２頁「４．３．１．２
球面研削盤」に示されている。2. Description of the Related Art As a method for processing an optical element such as a lens,
Publication "Optical element processing technology" (Optical Technology Association S5
"Recessed flash high-speed polishing" is described in the section "5.1 Lens production process" on page 197 (issued 6.10.10.). Here, as the spherical surface processing step, three steps of spherical surface grinding, fine grinding and polishing are shown. 7 and 8 show a conventional spherical grinding method for a glass lens by a CG (curve generator) applied. FIG. 8 shows the outline of the mechanism of a CG-based spherical grinding device. As a known example of such a spherical grinding device, Japanese Patent Publication No. 61-3366 can be used.
5 publication and "Optical element processing technology" (published by the Optical Industry Technical Association S56.10.10), page 182, "4.3.1.2".
Spherical grinder ".
【０００３】図８および図９において、２０は曲面半径
Ｒに創成されるワークであり、コレットチャック２２に
よりワーク軸に保持されている。２３はワーク軸本体で
あり、ワーク２０を２〜１０ｒｐｍで回転させながら切
込みｅ′を行うように図示しない機構が組み込まれてい
る。また、ワーク２０の肉厚調整のために、ワーク軸部
本体２３は図示しないハンドルによりｅ方向に移動調整
できるようになっている。２４は砥石であり、２１は砥
石軸である。ワーク２０と砥石２４との間には図示しな
いクーラント（冷却媒体）が供給される。In FIG. 8 and FIG. 9, reference numeral 20 denotes a work created with a curved surface radius R, which is held on the work shaft by a collet chuck 22. Reference numeral 23 denotes a work shaft main body, which has a mechanism (not shown) incorporated therein for performing the cutting e'while rotating the work 20 at 2 to 10 rpm. Further, in order to adjust the wall thickness of the work 20, the work shaft main body 23 can be moved and adjusted in the e direction by a handle (not shown). Reference numeral 24 is a grindstone, and 21 is a grindstone shaft. A coolant (cooling medium) (not shown) is supplied between the work 20 and the grindstone 24.
【０００４】上記構成では、曲率半径Ｒのワーク２０を
創成する砥石２４の加工直径をｄとした場合、砥石軸２
１をｓｉｎθ＝ｄ／２Ｒに相当する角度θだけ傾けた状
態で、加工直径ｄがワーク軸中心線とＰ点で一致するよ
うに、砥石軸２１を図示しないハンドルによる砥石軸に
対して直角なｂ方向に移動調整することにより、所望の
曲率半径Ｒ＝ＯＰを有した球面を創成できる。In the above structure, when the machining diameter of the grindstone 24 for creating the work 20 having the radius of curvature R is d, the grindstone shaft 2
1 is tilted by an angle θ corresponding to sin θ = d / 2R, the grindstone shaft 21 is perpendicular to the grindstone shaft by a handle (not shown) so that the machining diameter d coincides with the work shaft centerline at point P. By adjusting the movement in the b direction, a spherical surface having a desired radius of curvature R = OP can be created.
【０００５】[0005]
【発明が解決しようとする課題】上述した従来の方法で
は、みがき工程へ投入可能な高品位な研削仕上面を得る
ために２つの工程が存在することから、加工コスト削減
ニーズへの対応には限界があった。図９，図１０，図１
１は上述した従来研削装置におけるワークと砥石の接触
部を説明しており、図９は砥石軸方向からワーク軸方向
を見た図であり、図１０は図９のＬ−Ｌ線断面図、図１
１は図９のＭ−Ｍ線断面図であり、２５は研削砥石の加
工面、２６はワークを示す。この球面加工は、砥石加工
面の外側面ａ、内側面ｂによる加工と、砥石加工面の底
面ｃによる加工の複合で行われる。また、従来の加工法
においては、加工砥石のメッシュとして通常＃２００〜
４００を使用し、例えばワーク外径φ３０ｍｍ、砥石外
径φ２０ｍｍ、図７におけるｅ′方向の切込み速度を２
ｍｍ／ｍｉｎ、ワークの回転速度を１０ｒｐｍとした場
合、砥石の加工面に要求される研削加工能率は、砥石加
工面の底面ｃに対して砥石外側面ａは約６倍、砥石内側
面部ｂは約２倍の能率が要求され、砥石外側面部ａのワ
ークに対する切込み深さは０．１５ｍｍ、砥石内側面部
ｂのワークに対する切込み深さは０．０５ｍｍとなる。In the above-mentioned conventional method, there are two processes for obtaining a high-quality grinding surface that can be applied to the polishing process, and therefore, there is a need for processing cost reduction. There was a limit. 9, 10, and 1
1 illustrates a contact portion between a work and a grindstone in the above-described conventional grinding apparatus, FIG. 9 is a view of the grindstone as viewed from the grindstone axis direction, and FIG. 10 is a cross-sectional view taken along line LL of FIG. Figure 1
1 is a sectional view taken along the line MM of FIG. 9, 25 is a processed surface of a grinding wheel, and 26 is a work. This spherical surface processing is performed by a combination of processing by the outer side surface a and the inner side surface b of the grindstone processing surface and processing by the bottom surface c of the grindstone processing surface. Further, in the conventional processing method, the mesh of the processing grindstone is usually # 200-
400 is used, for example, the workpiece outer diameter is 30 mm, the grindstone outer diameter is 20 mm, and the cutting speed in the e ′ direction in FIG. 7 is 2
mm / min, when the rotation speed of the workpiece is 10 rpm, the grinding efficiency required for the grindstone machining surface is about 6 times as large as the bottom surface c of the grindstone machining surface, and about 6 times as much as the grindstone inner surface portion b. About twice the efficiency is required, and the cutting depth of the outer surface a of the grindstone to the work is 0.15 mm, and the cutting depth of the inner surface b of the grindstone to the work is 0.05 mm.
【０００６】したがって加工面の品質を高くするために
高メッシュな仕上げ研削用砥石を適用しても、砥粒の微
細化にともない研削加工能力が低下するため、砥石加工
面の側面ａおよびｂで焼き付きが発生する。これにより
加工速度が必然的に低下するため、従来の２工程によっ
て加工を行うよりも加工時間が長くなり、後工程を省略
することによりコスト的なメリットを得ることはできな
かった。Therefore, even if a high-mesh grindstone for finish grinding is used to improve the quality of the machined surface, the grinding capacity decreases as the abrasive grains become finer. Burn-in occurs. Since this inevitably reduces the processing speed, the processing time becomes longer than the conventional two-step processing, and the cost advantage cannot be obtained by omitting the subsequent steps.
【０００７】本発明はこのような問題点を考慮しなされ
たものであり、高速で且つ高精度な球面加工を１工程で
短時間に行うことを目的とする。The present invention has been made in consideration of such problems, and an object thereof is to perform high-speed and highly accurate spherical surface processing in one step in a short time.
【０００８】[0008]
【課題を解決するための手段および作用】本発明の球面
加工方法は、外輪帯に粗研削用砥石を、内輪帯に仕上げ
研削用砥石を配した２層構造のカップ型研削砥石を用
い、この研削砥石の加工面をワークに当接させ、５０〜
５０００ｒｐｍの回転数でワークを回転させながら加工
するものである。このため本発明の球面加工装置は、ワ
ークを回転させる回転駆動機構と、上述した構造のカッ
プ型研削砥石とを備えるものである。The spherical processing method of the present invention uses a cup-type grinding wheel having a two-layer structure in which a grindstone for rough grinding is arranged on the outer ring zone and a grindstone for finish grinding is arranged on the inner ring zone. Touch the work surface of the grinding wheel to the workpiece,
The processing is performed while rotating the work at a rotation speed of 5000 rpm. Therefore, the spherical surface processing apparatus of the present invention is provided with the rotation drive mechanism for rotating the work and the cup-type grinding wheel having the above-described structure.
【０００９】図１は上記構成を砥石側からワークを見た
平面図、図２および図３は図１のＡ−Ａ′断面図および
Ｂ−Ｂ′断面図を示す。カップ型研削砥石１はその加工
部内輪帯に仕上げ研削用砥石２、外輪帯に粗研削用砥石
３が配されている。一般に研削加工においては、ワーク
との接触による加工負荷の大きい部分ほど砥石加工面の
摩耗の進行が早いため、研削砥石１の外側面部と内側面
部には図２および図３のａ，ｂで示すような偏摩耗部が
存在している。このため研削砥石１の外側面部の偏摩耗
部ａにおいて、粗研削用砥石３の加工面先端に対して仕
上げ研削用砥石２の加工面先端が、図２のｄ2 で示す量
だけ突出した状態が維持されている。FIG. 1 is a plan view of the above construction when the work is viewed from the grindstone side, and FIGS. 2 and 3 are sectional views taken along the lines AA 'and BB' of FIG. The cup-shaped grinding wheel 1 has a grinding wheel 2 for finish grinding on the inner ring zone of the machined portion and a grinding wheel 3 for rough grinding on the outer ring zone. Generally, in the grinding process, the wear of the grindstone processed surface progresses faster in the part where the processing load due to the contact with the work is larger, so that the outer side surface and the inner side surface of the grinding wheel 1 are shown by a and b in FIGS. 2 and 3. There is such an uneven wear portion. Therefore, in the uneven wear portion a on the outer side surface of the grinding wheel 1, the processing surface tip of the finishing grinding wheel 2 is projected from the processing surface tip of the rough grinding wheel 3 by an amount indicated by d 2 in FIG. Has been maintained.
【００１０】また研削砥石１は回転軸Ｏを中心として矢
印Ｘ方向に回転駆動する構成となっている。一方、ワー
ク４は回転軸Ｐを中心に矢印Ｙ方向に回転駆動する構成
となっており、５０〜５００ｒｐｍの回転速度で加工が
行われる。研削加工はワーク４と研削砥石１を当接する
ことによって行われる。Further, the grinding wheel 1 is configured to be rotationally driven in the direction of arrow X about the rotation axis O. On the other hand, the work 4 is configured to be rotationally driven in the direction of the arrow Y around the rotation axis P, and processing is performed at a rotation speed of 50 to 500 rpm. The grinding process is performed by bringing the work 4 and the grinding wheel 1 into contact with each other.
【００１１】上記構成によれば、研削加工中、研削砥石
１の底面と、図３に示すように内側面においては仕上げ
研削用砥石２のみが研削加工に寄与し、図２に示すよう
に研削砥石１の外側面においては、ワーク４に対する研
削砥石１の切込み量Ｄの内、大部分の切込み量ｄ1 は粗
研削用砥石３によって加工が行われる。したがって、研
削加工中最も高い加工能率が要求される砥石外側面にお
いては、おもに加工能率の高い粗研削加工用砥石３で加
工が行われ、ワークの加工面精度を決定する砥石底面に
よる加工は仕上げ研削用砥石２によって加工が行われる
ため、高精度な球面創成加工が可能となる。According to the above construction, during the grinding process, only the bottom surface of the grinding wheel 1 and the inner surface of the grinding wheel 2 as shown in FIG. 3 contribute to the grinding process, and as shown in FIG. in the outer surface of the grinding 1, of the depth of cut D of the grinding wheel 1 relative to the workpiece 4, the cutting amount d 1 most processing is done by rough grinding grindstone 3. Therefore, during the grinding process, the outer surface of the grindstone that requires the highest machining efficiency is processed mainly by the grindstone 3 for rough grinding, which has a high machining efficiency, and the grinding wheel bottom surface that determines the machining surface accuracy of the workpiece is finished. Since the grinding stone 2 is used for processing, highly accurate spherical surface creation processing is possible.
【００１２】図４はワーク４の外径をφ３０ｍｍ、研削
砥石１の外径をφ２０ｍｍ、ワーク４に対する研削砥石
１の切込み速度を２ｍｍ／ｍｉｎとしたときの、ワーク
４の回転速度と、砥石内側面のワーク４に対する切込み
深さ（図３におけるｄ3 ）の関係を示す。これによれば
研削砥石内側面による切込み深さはワーク４が５０ｒｐ
ｍ以上で回転する場合、０．０１ｍｍ以下となり、仕上
げ研削用砥石２でも十分に安定して加工できる切込み深
さである。また切込み速度としてはワークの破損を避け
るために通常４ｍｍ／ｍｉｎ以下で加工を行うが、切込
み速度４ｍｍ／ｍｉｎでもワークの回転数が５００ｒｐ
ｍのとき、砥石内側面の切込み深さは０．００２ｍｍま
で低減される。したがって仕上げ研削用砥石として＃８
００〜２０００のメッシュのものを使用する場合でも安
定した加工が可能となり、ワーク回転数の上限は５００
ｒｐｍで充分である。FIG. 4 shows the rotational speed of the work 4 and the inside of the grindstone when the outer diameter of the work 4 is 30 mm, the outer diameter of the grinding wheel 1 is 20 mm, and the cutting speed of the grinding wheel 1 with respect to the work 4 is 2 mm / min. The relationship of the cutting depth (d 3 in FIG. 3 ) with respect to the work 4 on the side surface is shown. According to this, the work 4 has a cutting depth of 50 rp due to the inner surface of the grinding wheel.
When rotating at m or more, the cutting depth becomes 0.01 mm or less, which is a cutting depth that can be sufficiently and stably processed by the finish grinding wheel 2. The cutting speed is usually 4 mm / min or less in order to avoid damage to the work. However, even if the cutting speed is 4 mm / min, the rotation speed of the work is 500 rp.
When m, the cutting depth of the inner surface of the grindstone is reduced to 0.002 mm. Therefore, as a grinding wheel for finish grinding, # 8
Stable machining is possible even when using a mesh of 00 to 2000, and the upper limit of the work rotation speed is 500.
rpm is sufficient.
【００１３】[0013]
【実施例１】図５は本発明の一実施例の加工装置を示
す。表１は切込み速度３ｍｍ／ｍｉｎで加工する場合
の、砥石側面部切込み深さと、適用する砥石メッシュ、
加工結果の一覧を示す。[Embodiment 1] FIG. 5 shows a processing apparatus according to an embodiment of the present invention. Table 1 shows the cutting depth on the side surface of the grindstone and the grindstone mesh to be applied when machining at a cutting speed of 3 mm / min.
A list of processing results is shown.
【００１４】[0014]
【表１】 [Table 1]
【００１５】ワーク５はホルダー６に保持されており、
回転軸Ｃを中心として図示しない駆動装置によって５０
〜５００ｒｐｍの任意の設定で回転駆動自在となってい
る。カップ型の研削砥石７はスピンドル８を介して図示
しない駆動装置により回転軸Ｄを中心として回転自在と
なっている。The work 5 is held by a holder 6,
A drive device (not shown) rotates about the rotation axis C as a center.
Rotational drive is possible at any setting of up to 500 rpm. The cup-shaped grinding wheel 7 is rotatable about a rotation axis D by a driving device (not shown) via a spindle 8.
【００１６】カップ型の研削砥石７の加工面はダイヤモ
ンド粉末からなる砥粒と樹脂材料を配合し熱処理を施し
た研削工具からなり、その内輪帯が＃８００〜２０００
の高メッシュな仕上げ研削用砥石１０によって構成さ
れ、外輪帯は＃４００の低メッシュな粗研削用砥石９に
よって構成されている。また、矢印Ｅ方向のワーク６の
移動と矢印Ｆ方向のスピンドル８の移動は、図示しない
駆動装置によって任意に設定、移動が可能となってい
る。The machined surface of the cup-shaped grinding wheel 7 is composed of abrasive grains made of diamond powder and a grinding tool which is heat-treated by mixing a resin material, and its inner ring zone is # 800-2000.
Of the high-mesh finish grinding wheel 10 and the outer ring zone of the # 400 low-mesh rough grinding wheel 9. The movement of the work 6 in the direction of arrow E and the movement of the spindle 8 in the direction of arrow F can be arbitrarily set and moved by a driving device (not shown).
【００１７】上記装置による研削加工は、研削砥石７と
ワーク５を回動し、ワーク５を矢印Ｅの方向に、または
スピンドル８を矢印Ｆの方向へ移動することにより研削
砥石７に対してワーク５を当接させて行う。仕上げ研削
用砥石１０はメッシュが高くなるほど加工能率が低下す
るため、安定した加工を行うために砥石側面による切込
み深さを少なく設定する必要がある。In the grinding process by the above-mentioned apparatus, the grinding grindstone 7 and the work 5 are rotated, and the work 5 is moved in the direction of arrow E or the spindle 8 is moved in the direction of arrow F, with respect to the grindstone 7. 5 are brought into contact with each other. Since the grinding wheel 10 for finish grinding has a lower machining efficiency as the mesh becomes higher, it is necessary to set the depth of cut by the side surface of the grinding wheel to be small in order to perform stable machining.
【００１８】したがって、表１に示すように研削仕上げ
面としてそれほど高品位な面を必要としない場合はワー
クの回転数を５０ｒｐｍに設定し、仕上げ研削用砥石と
して＃８００メッシュの砥石を用いて研削砥石を形成す
る。さらに高品位な研削仕上げ面を必要とする場合、ワ
ークの回転数を５００ｒｐｍに設定し、仕上げ研削用砥
石として＃２０００メッシュの砥石を用いて研削砥石を
形成することにより、１工程で従来の球面創成加工と同
様の加工時間で高品位な球面創成加工を安定して行うこ
とが可能である。Therefore, as shown in Table 1, when a high quality surface is not required as the grinding finish surface, the number of revolutions of the work is set to 50 rpm and the grinding wheel for finish grinding is ground with a # 800 mesh grindstone. Form a whetstone. When a higher quality grinding finish surface is required, the number of revolutions of the work is set to 500 rpm and a grinding stone of # 2000 mesh is used as the grinding stone for finish grinding to form the grinding stone, and the conventional spherical surface is formed in one step. It is possible to stably perform high-quality spherical surface generation processing in the same processing time as the generation processing.
【００１９】本実施例においては、仕上げ研削用砥石に
適用する砥石のメッシュを、求める加工面精度に併せて
更に細かく選定することも可能であり、またワークの材
質に併せてボンド材質を変更（ブロンズ系メタルボンド
等）しても同様の効果が得られる。In this embodiment, it is possible to further finely select the mesh of the grindstone applied to the grindstone for finish grinding in accordance with the required surface finish accuracy, and to change the bond material in accordance with the material of the work ( The same effect can be obtained by using a bronze-based metal bond, etc.).
【００２０】[0020]
【実施例２】図６は本発明の実施例２を示し、実施例１
と同じ部材には同一符号を記しその説明は省略する。本
実施例においては、カップ型の研削砥石１１に対して電
解インプロセスドレッシングを用いて加工を行うもので
ある。このため、導電性を有する研削砥石１１の加工面
は、ダイヤモンド粉末などの砥粒と、Ｃｕ，Ｓｎ，Ｆｅ
等の金属粉末とを配合し、熱処理した焼結合金により構
成されており、その内輪帯が＃４０００などの高メッシ
ュの仕上げ研削用砥石１９からなり、外輪帯が＃４００
などの低メッシュの粗研削用砥石１８からなっている。[Embodiment 2] FIG. 6 shows Embodiment 2 of the present invention, and Embodiment 1
The same members as those of 1 are indicated by the same reference numerals and the description thereof will be omitted. In the present embodiment, the cup-shaped grinding wheel 11 is processed using electrolytic in-process dressing. For this reason, the processed surface of the grinding wheel 11 having conductivity is formed of abrasive grains such as diamond powder and Cu, Sn, Fe.
It is composed of a sintered alloy that has been mixed with a metal powder such as, and heat-treated, the inner ring of which is made of a high mesh finish grinding wheel 19 such as # 4000, and the outer ring of which is # 400.
And a low-mesh rough grinding wheel 18.
【００２１】また、装置外に設けた電源装置１２の
（＋）極はブラシ１３を介して研削砥石１１の外周部に
電気的に接続されている。ドレス電極１４は研削砥石１
１の加工面と近似形状に形成され、ドレス電極１４と研
削砥石１１の加工面との隙間が０．１〜０．３ｍｍとな
るようにドレス電極保持部材１５により保持されてい
る。１６は、図示しないクーラント供給装置によって、
加工域に弱電性クーラント１７を供給するためのノズル
である。The (+) pole of the power supply device 12 provided outside the device is electrically connected to the outer peripheral portion of the grinding wheel 11 via the brush 13. The dress electrode 14 is the grinding wheel 1
The dressing electrode holding member 15 is formed to have a shape similar to that of the processed surface of No. 1 and has a gap between the dressing electrode 14 and the processed surface of the grinding wheel 11 of 0.1 to 0.3 mm. 16 is a coolant supply device (not shown)
It is a nozzle for supplying the weak electric coolant 17 to the processing area.
【００２２】上記加工装置による加工は、実施例１と同
様に研削砥石１１、ワーク５を駆動させて研削加工を行
うと同時に、ノズル１６から弱電性クーラント１７を供
給し、電源装置１２によってドレス電極１４と研削砥石
１１の加工面の間に弱電性クーラント１７を介して電圧
を印加する。In the processing by the above-described processing apparatus, the grinding wheel 11 and the work 5 are driven to perform the grinding processing in the same manner as in the first embodiment, and at the same time, the weak electric coolant 17 is supplied from the nozzle 16 and the dressing electrode is supplied by the power supply device 12. A voltage is applied between the processing surface of the grinding wheel 11 and the grinding wheel 14 via the weakly electric coolant 17.
【００２３】本実施例においては、従来の研削加工にお
いて目詰まりのため使用できなかったような、＃数千メ
ッシュ以上の超細粒砥石を仕上げ研削用砥石１９に用い
ることが可能となり、また従来のドレッシング方法で
は、ドレッシングが困難であった鉄系あるいはニッケル
系のボンド材により構成される高能率加工が可能な砥石
を粗研削用砥石に用いることが可能となる。したがって
本実施例によれば、更に短時間で品質の高い高精度な球
面創成加工を安定して行うことが可能となる。In the present embodiment, it is possible to use, as the finishing grinding wheel 19, an ultra-fine grained grinding wheel of # several thousand mesh or more, which cannot be used due to clogging in the conventional grinding process. In the dressing method of (1), it is possible to use a grindstone which is made of an iron-based or nickel-based bond material, which has been difficult to be dressed, and which enables high-efficiency processing, as a grindstone for rough grinding. Therefore, according to the present embodiment, it is possible to stably perform high-quality, high-precision spherical surface creation processing in a shorter time.
【００２４】[0024]
【発明の効果】以上説明したように本発明によれば、光
学素子などに対する高速且つ、高精度な研削加工が１工
程で、しかも従来加工と同様の加工速度で行えるため、
加工工程のサイクルタイムの短縮、および次工程の廃止
による工程簡素化が可能となる。As described above, according to the present invention, high-speed and high-precision grinding of optical elements and the like can be performed in one step and at the same processing speed as conventional processing.
It is possible to shorten the cycle time of the machining process and simplify the process by eliminating the next process.
【図１】本発明の基本構成の平面図。FIG. 1 is a plan view of the basic configuration of the present invention.
【図２】図１のＡ−Ａ′線断面図。FIG. 2 is a sectional view taken along the line AA ′ of FIG.
【図３】図１のＢ−Ｂ′線断面図。FIG. 3 is a sectional view taken along line BB ′ of FIG.
【図４】ワークの回転数に対する切込み深さを示す特性
図。FIG. 4 is a characteristic diagram showing a cutting depth with respect to a rotation speed of a work.
【図５】実施例１の部分破断側面図。FIG. 5 is a partially cutaway side view of the first embodiment.
【図６】実施例２の部分破断側面図。FIG. 6 is a partially cutaway side view of the second embodiment.
【図７】従来装置の部分破断側面図。FIG. 7 is a partially cutaway side view of a conventional device.
【図８】従来装置の研削を説明する側面図。FIG. 8 is a side view illustrating grinding of a conventional device.
【図９】従来技術の研削の平面図。FIG. 9 is a plan view of conventional grinding.
【図１０】図９のＬ−Ｌ線断面図。10 is a sectional view taken along line LL in FIG.
【図１１】図９のＭ−Ｍ線断面図。11 is a sectional view taken along line MM of FIG.
１ カップ型研削砥石 ２ 仕上げ研削用砥石 ３ 粗研削用砥石 ４ ワーク 1 Cup type grinding wheel 2 Finishing grinding wheel 3 Rough grinding wheel 4 Workpiece
Claims (2)
自在なワークホルダに保持されたワーク表面に当接して
加工を行う方法において、加工面の外輪帯に粗研削用砥
石、内輪帯に仕上げ用研削砥石を配設した２層の砥石に
より前記カップ型研削砥石を形成し、前記ワークを５０
〜５００ｒｐｍの回転数で回転させなから加工すること
を特徴とする球面加工方法。1. A method in which a cup-type grinding wheel that is driven to rotate is brought into contact with a surface of a work held by a rotatable work holder to perform processing, and a grinding wheel for rough grinding is finished on the outer ring zone of the machined surface and an inner ring zone is finished. The cup-shaped grinding wheel is formed by two layers of grinding wheels provided with a grinding wheel for use,
A spherical surface processing method, characterized in that processing is carried out without rotating at a rotation speed of up to 500 rpm.
ダと、前記ワークの表面に当接した状態で回転駆動され
るカップ型研削砥石とを備え、前記カップ型研削砥石は
外輪帯に粗研削砥石、内輪帯に仕上げ研削砥石を配設し
た２層の砥石構造となっていることを特徴とする球面加
工装置。2. A rotatable work holder that holds a work, and a cup-type grinding wheel that is driven to rotate while being in contact with the surface of the work, the cup-type grinding wheel having a rough grinding wheel on an outer ring zone. A spherical surface processing device having a two-layer grindstone structure in which a finish grinding grindstone is arranged in the inner ring zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35202393A JPH07195261A (en) | 1993-12-28 | 1993-12-28 | Spherical grinding method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35202393A JPH07195261A (en) | 1993-12-28 | 1993-12-28 | Spherical grinding method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07195261A true JPH07195261A (en) | 1995-08-01 |
Family
ID=18421255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35202393A Pending JPH07195261A (en) | 1993-12-28 | 1993-12-28 | Spherical grinding method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07195261A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809353A1 (en) * | 1998-03-05 | 1999-09-09 | Optotech Optikmasch Gmbh | Method for grinding and centering optical lenses |
| JP2016093866A (en) * | 2014-11-14 | 2016-05-26 | オリンパス株式会社 | Processing device for optical element, grindstone member and processing method for optical element |
| CN113084599A (en) * | 2021-04-02 | 2021-07-09 | 成都光明光电股份有限公司 | Processing method of glass rod |
-
1993
- 1993-12-28 JP JP35202393A patent/JPH07195261A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809353A1 (en) * | 1998-03-05 | 1999-09-09 | Optotech Optikmasch Gmbh | Method for grinding and centering optical lenses |
| DE19809353C2 (en) * | 1998-03-05 | 2001-04-26 | Optotech Optikmasch Gmbh | Method for double-sided grinding of lenses and device for carrying out the method |
| JP2016093866A (en) * | 2014-11-14 | 2016-05-26 | オリンパス株式会社 | Processing device for optical element, grindstone member and processing method for optical element |
| CN113084599A (en) * | 2021-04-02 | 2021-07-09 | 成都光明光电股份有限公司 | Processing method of glass rod |
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