JPS5840259A - Spherical face slider for lens - Google Patents
Spherical face slider for lensInfo
- Publication number
- JPS5840259A JPS5840259A JP13718681A JP13718681A JPS5840259A JP S5840259 A JPS5840259 A JP S5840259A JP 13718681 A JP13718681 A JP 13718681A JP 13718681 A JP13718681 A JP 13718681A JP S5840259 A JPS5840259 A JP S5840259A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- axis
- spherical surface
- shaft
- tool
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/04—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses involving grinding wheels controlled by gearing
- B24B13/043—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses involving grinding wheels controlled by gearing using cup-type grinding wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はレンズの球面荒摺機に係り、具体的には被加工
レンズに対する球面創成用工具の設定位置を容易に調整
することができるしンズの球面荒摺機に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lens spherical surface roughening machine, and specifically relates to a lens spherical surface roughening machine that can easily adjust the setting position of a spherical surface creation tool with respect to a lens to be processed. It is something.
先ず最初に、一般に用いられるレンズの球面荒摺機の加
工原理について説明すると、＃１１図ａに示すように、
ワーク軸３に取付けられたレンズホルダー２の先端に被
加工レンズ１を保持せしめ軸線ム−Ａ′を中心に回転す
べく構成されている。會た第１図すに示す斜視図の如く
球面創成用工具であるカップ状に形成された砥石４の先
端は同図１のように上記被加工レンズ１の球面に当設し
軸＠ ｎ −’ｙｚ′を中心に回転しつつ被加工レンズ
を研削できるように構成されている。ここで図中軸線ム
−Ａ゛及び軸＠ Ｂ −！ｌ’は同一平面上にあるが、
その交点をＯ，ムｏｎの大きさを０とし、また当該同一
平面上にあり、かつ砥石４の表面上で交点Ｏの最短距離
にある点をアｌ、Ｐｇ （＊ＩＦｇＪａ＃Ｗ）とすれば
？ 点Ｐ ｚ ｌｉ Ｕ 点Ｐ ｍはそれぞれ軸線１−
Ｂ′において対称に位置し交点０からの距離はＯＰ ｌ
＝ ＯＰ ｊ！となる。First, let us explain the processing principle of a commonly used lens spherical roughening machine, as shown in Figure #11 a.
The lens holder 2 is attached to a work shaft 3, and the lens 1 is held at the tip of the lens holder 2, which is rotated about an axis M-A'. As shown in the perspective view shown in Figure 1, the tip of the cup-shaped grindstone 4, which is a tool for creating a spherical surface, is brought into contact with the spherical surface of the lens 1 to be processed, as shown in Figure 1, and the axis @ n - It is configured so that the lens to be processed can be ground while rotating around 'yz'. Here, in the figure, the axis line M-A゛ and the axis @ B-! l' are on the same plane,
Let the intersection point be O, the size of Muon be 0, and the point on the same plane and the shortest distance from the intersection O on the surface of the grinding wheel 4 be A, Pg (*IFgJa#W). Ba? Point P z li U and point P m are respectively axis 1-
Located symmetrically at B', the distance from the intersection 0 is OP l
= OP j! becomes.
そして、このとき点２３１が軸線ムーム′上にあれば被
加工レンズ３は半径ｏｙｇの球面に創成されることにな
る。If the point 231 is on the axis Moum' at this time, the lens 3 to be processed will be created as a spherical surface with a radius of oyg.
したがって、牛Ｎ翼の球面を創成するためには点１１８
が軸線ムーＸ上に存在し、かつ。Therefore, to create the spherical surface of the cow N wing, the point 118
exists on the axis Mu X, and.
距離０１農；稟の条件を満足させればよいことになる。Distance 01: All you need to do is satisfy the following conditions.
ところで、上記の条件を満足させるべく被加工レンズに
対する球面創成用工具の設定位置を調整するには、上記
する角度−を変化せしめること、及び球面創成用工具で
ある砥石４を軸＠ｓ −ｙｌに対して晶直方向に平行移
動せしめることにより行なうが・１周知の如くレンズの
加工は極めて高い精度が要求され、斯様な調整は容易な
ものでない。即ち、上記角度−を変化させる揚台には９
回転中心が交点Ｏと一致していないために角度−を変化
させることにより本来一定値を維持する必要があるｙ’
ａｔ ”’ ｒの値が変化してし重うのみならず。By the way, in order to adjust the setting position of the spherical surface generation tool with respect to the lens to be processed so as to satisfy the above conditions, it is necessary to change the above-mentioned angle - and to move the grindstone 4, which is the spherical surface generation tool, to the axis @s -yl. However, as is well known, lens processing requires extremely high precision, and such adjustment is not easy. In other words, the platform for changing the above-mentioned angle has 9
Since the center of rotation does not coincide with the intersection O, y' must be maintained at a constant value by changing the angle -.
Not only does the value of at ``' r change, but it also increases.
点ＩＩ禽の位置も軸線ムーＸ上から外れてしまうことに
なる。さらにまた、軸線１−ｍ１’を平行移動させると
点Ｐ１も移動すると同時に交点Ｏも移動し、この結果Ｏ
ＰＩの長さが上記同様変化してしまうことになり、レン
ズに対する球ＷＪ１１成用工具の設定位置を上記所定の
条件下に調整するのは非常な困難を要するものである。The position of point II bird also deviates from the axis line MuX. Furthermore, when the axis 1-m1' is translated in parallel, the point P1 also moves and at the same time the intersection O also moves, resulting in O
The length of the PI changes as described above, and it is extremely difficult to adjust the setting position of the tool for forming the ball WJ11 relative to the lens under the above-mentioned predetermined conditions.
従来、この種の調整は専ら人為的作業に依っており、こ
の結果９段取時間に長時間を要するとともに、その調整
精度も限られたものであるということが実情である。Conventionally, this type of adjustment has relied exclusively on manual work, and as a result, the reality is that it takes a long time to complete nine setups, and the accuracy of the adjustment is also limited.
本発明は係る事情に対処すぺ（、簡単な操作により１段
奉時間を短縮し、しかも常に高精度の調整がなされ得る
ようレンズの球面荒摺機の構成面から改良を加え、上記
種々の利便を担保せんとするものである。。即ち１本発
明は被加工レンズを回転しつつ球面創成用工具にて研削
するレンズの球面荒摺轡において球面創成用工具である
カップ状の砥石を基台に設けた回動輪により被加工レン
ズに対する、対向角を可変可能に設けるとともに、上記
砥石の有するタイル軸と、上記被加工レンズを回転せし
めるワーク軸と、上記回動輪のＳつの軸線を常に一点で
交χするように各部を配設することにより上記調整が精
度よく、シかも簡単にできるようにしたことを特徴とす
るものである。The present invention has been made to address the above-mentioned circumstances by improving the structure of the lens spherical surface roughening machine so as to shorten the first-stage heating time through simple operation and to always be able to perform highly accurate adjustments. It is an object of the present invention to ensure convenience.That is, one aspect of the present invention is to use a cup-shaped grindstone, which is a tool for creating a spherical surface, in rough grinding of the spherical surface of a lens, in which the lens to be processed is rotated and ground with a tool for creating a spherical surface. The opposing angle to the lens to be processed is made variable by a rotating wheel provided on the stand, and the tile axis of the grindstone, the work shaft that rotates the lens to be processed, and the S axes of the rotating wheel are always aligned at one point. This is characterized in that the above adjustments can be made accurately and easily by arranging each part so that they intersect with each other.
以下本発明の＾体的実施例について、第２図を参照して
説明する。同図は本発明に係るレンズの球面荒摺機の正
面一部所面図を示すものである。なお、第１ｗＪ＆と同
一部に相当する部分に槻同−書号を付しである。図中。A specific embodiment of the present invention will be described below with reference to FIG. This figure shows a partial front view of the spherical surface roughening machine for lenses according to the present invention. In addition, the part corresponding to the same part as the 1st wJ& is given the ``Tsukido'' name. In the figure.
１１は荒摺柵の基台８である。この基台１１の所定位置
に−はスライダ５を具備し、図中矢印１−Ｍ′方向に進
退動可能に構成されている。11 is the base 8 of the rough fence. A slider 5 is provided at a predetermined position on the base 11, and is configured to be movable forward and backward in the direction of arrow 1-M' in the figure.
スライダ５にはり一夕軸３が取付けられており、更に、
この７−タ軸３の先端部にはレンズホルダー２を備えて
いる。このレンズホルダー２は上記シータ軸３の軸線上
にあり９回転駆動できるように構成されているとともに
その先端部はレンズ、即ち被加工レンズ１が着脱可能に
構成されている。図中一点鎖線で示すＸ−０″線がワー
ク軸３の軸線を表すものである。一方８は回動軸で基台
１１の所定位置にプル）等の固定具１５にて立設される
。A beam shaft 3 is attached to the slider 5, and further,
A lens holder 2 is provided at the tip of the 7-tassel shaft 3. This lens holder 2 is located on the axis of the theta axis 3 and is configured to be driven nine rotations, and the tip thereof is configured such that a lens, that is, a lens to be processed 1 can be attached and removed. The X-0'' line shown by a dashed line in the figure represents the axis of the workpiece shaft 3. On the other hand, 8 is a rotation shaft which is erected at a predetermined position on the base 11 with a fixing device 15 such as a puller. .
この回動軸８は実施例では固定ビン状に形成−されてお
り、このビン部に軸止された９例えばポールベアリング
等の軸受６を介して取付けられたハウジング９が回動す
ぺ（構成されている。なお７は取付用ナラ）を示す。こ
の回動軸８の軸線は図中一点鎖線Ｙ −Ｙ’線で表わさ
れ、上記ワーク軸の軸線Ｘ −０’線と艦直に交Ｘする
べくその立設位置が設定されている。また１０は回動台
で一端側が上記ハウジング９に固定具１４にて取付けら
れ、他端側即ち載置台１０＆にはスライダ１２を介して
スピンドル１３が載置されている。上記スライダ１２は
、上記したワーク軸３１１１に設けたスライダ５と同様
に載置台１Ｏａに対し進退動可能に構成される。このよ
うな進退動可能な駆動手段は図示しないが９例えばボー
ルネジ、及びこのｌ−ルネジを駆動するパルスモータを
用い、数値制御で迅連且正確に行なうことが銀型しい。In the embodiment, this rotation shaft 8 is formed in the shape of a fixed bottle, and a housing 9 attached via a bearing 6 such as a pole bearing, which is fixed to the bottle part, rotates. Note that 7 indicates the mounting bolt. The axis of this rotating shaft 8 is represented by a dashed line Y-Y' in the figure, and its upright position is set so that it intersects the axis X-0' of the work shaft perpendicularly to the ship. Reference numeral 10 denotes a rotating table, one end of which is attached to the housing 9 with a fixture 14, and a spindle 13 placed on the other end, that is, the mounting table 10&, via a slider 12. The slider 12 is configured to be able to move forward and backward with respect to the mounting table 1Oa, similarly to the slider 5 provided on the work shaft 3111 described above. Although such driving means capable of advancing and retracting is not shown, it is preferable to use a ball screw, for example, and a pulse motor to drive the L-screw, and to perform rapid and accurate movement through numerical control.
勿論ナラシとスクリエー噂を用い、＾ンドル操作により
手動にて行なってもよく、その他種々の手段を利用する
も自由である。なお、この種の駆動手段は９図示しない
が上記回動台１０の回動手段にも同様に実施されること
が銀型しい。Of course, this can be done manually by using the ``Narashi'' and ``Screening Rumors'', or by using a handle operation, or various other methods are also freely available. Although this type of driving means is not shown in FIG. 9, it is preferable that the rotating means of the rotating table 10 be similarly implemented.
盲て、上記したスピンドル１３の先端にはレンズの球面
創成用工員が備えられるが実施例では上記したカップ状
砥石４が取付けられスピンドル１３にて回転駆動される
。このスピンドル１３の回転中心は、その外周に対して
傷心させており、これがタイル軸となる。A worker for creating a spherical surface of the lens is provided at the tip of the spindle 13 described above, but in the embodiment, the cup-shaped grindstone 4 described above is attached and rotated by the spindle 13. The center of rotation of this spindle 13 is centered with respect to its outer periphery, and this becomes the tile axis.
タイル軸（第２ＷＪ中一点鎖線ｏ’−ｘＪ）は上記圃動
輪！−τ′線と−直に交叉するぺ（位置設定されるとと
もに上記ワーク軸の軸線Ｘ−〇′線と高さが一部するべ
（町斎住淀される。The tile axis (dotted chain line o'-xJ in 2nd WJ) is the above-mentioned field wheel! - The line that intersects directly with the -τ' line is set (the position is set, and the height is partially the same as the axis X-〇' line of the work shaft).
これにより上記タイル軸の軸＠ Ｏ’ −１’線とり一
一軸の軸Ｈｘ −ｏ’線は同一平面上に存在することに
なるとともに１ｍ動軸τ−！′線を含めた各軸線５ｉｌ
ｌが０″を交点として一点で交χすることになり９回動
軸８を中心にスピンドル１３が載置された回動台１０を
回動することにより被加工レンズ１に対する砥石４０対
向角を変化せしめても上記Ｓ＠は交点Ｏ′で交叉するの
である。As a result, the axis of the tile axis @O'-1' line and the axis Hx-o' of the tile axis exist on the same plane, and the 1m moving axis τ-! Each axis line including ' line 5il
Since l intersects χ at one point with 0'' as the intersection point, by rotating the rotating table 10 on which the spindle 13 is placed around the rotation axis 8, the opposing angle of the grinding wheel 40 with respect to the lens to be processed 1 can be adjusted. Even if it is changed, the above S@ intersects at the intersection O'.
しかして、上述するレンズの球面荒摺機により被加工レ
ンズに対する球面創成用工具を設定する場合には回動軸
８を中心に回動台１０を回動せしめ被加工レンズに対す
る球面創成用工具の対向角、ＪＩＩも、第１図にて説明
した角度−を可変せしめることができるとともにスピン
ドル１３の進退動及び上記対向角−さらにはり−タ軸３
の進退動による相互調整により当該位置関係が設定され
るのである。Therefore, when setting a tool for creating a spherical surface on a lens to be processed using the above-mentioned lens spherical surface roughening machine, the rotating table 10 is rotated about the rotation axis 8, and the tool for creating a spherical surface on the lens to be processed is set. The opposing angle JII can also be varied as explained in FIG.
The positional relationship is set by mutual adjustment through forward and backward movements of the two.
しかも上記囲動手段及び進退動駆動手段はパルスモータ
を利用した数値制御によりなされるため、予め所定の動
作プ田ダラムな作成しておくこともできる。なお、上記
タイル軸はスピンドルの外周に対し偏心させているが。Moreover, since the surrounding movement means and the advance/retreat driving means are numerically controlled using a pulse motor, predetermined operation patterns can be prepared in advance. Note that the tile axis is eccentric to the outer periphery of the spindle.
この偏心させる手段としては偏心スピンドルを用いる方
法、會たは上下の位置調整機械を設けて偏るのないスピ
ンドルｉ用いる方法等説明したが、実施例に限定される
ものではなく、他の−々の形状を有し、必要に応じた他
の研削材を用いるも本発明の域を逸脱するものてはない
。更に、亭実施例では凸レンズの加工の場合について説
明したが、これに限定されるものではなくプ９スムの一
部に凸球面を有する場合、あるいは凹レンズを加工する
施することができ墨ものであり、１１たレンズの材料も
ガラスは勿論のことプラスチックスその他の種々のレン
ズ材料にも適用できるものである。なお、第４１１中１
＆は被加工レンズを、４ｍはカップ形状の砥石を示すＯ
斯くして１本発明に係るレンズの球面荒摺機によれば被
加工レンズを回転せしめるワーク軸と、この球面創成用
工具の上記被加工レンズに対する対向角θを鮫化させる
回動輪の各軸線が常に一点で交叉するため、第１図の場
合において角度θを変化させてもＯ１’ｌの長さに変化
は生じない。したがって、被加工レンズに対する球面創
成用工具の当接位置調整も極めて容易に、しかも精度よ
（行なうことができ、この結果作業時の段取時間が大幅
に短縮され得るとともにレンズ自体の加工品質向上にも
太き（寄与することができるものである。As means for this eccentricity, a method using an eccentric spindle, a method using a spindle i that is not biased by installing a machine or a vertical position adjustment machine, etc. have been explained, but the method is not limited to the embodiments, and other methods can be used. It does not depart from the scope of the present invention to use other abrasive materials having different shapes as required. Furthermore, although the case of machining a convex lens has been described in the Tei embodiment, the present invention is not limited to this, and it is possible to process a concave lens when a part of the prism has a convex spherical surface, or when machining a concave lens. The material of the 11th lens can be applied not only to glass but also to plastics and other various lens materials. In addition, 1st of the 411th
& indicates the lens to be processed, and 4m indicates the cup-shaped grindstone O.
Thus, according to the spherical surface roughening machine for lenses according to the present invention, the work shaft rotates the lens to be processed, and each axis of the rotation wheel that makes the opposing angle θ of the spherical surface creation tool with respect to the lens to be processed similar to that of the work shaft. Since they always intersect at one point, even if the angle θ is changed in the case of FIG. 1, the length of O1'l does not change. Therefore, it is possible to adjust the contact position of the spherical surface generation tool with respect to the lens to be processed very easily and with high precision.As a result, the setup time during work can be significantly shortened, and the processing quality of the lens itself can be improved. It is also possible to contribute to
更にまた９本発明の実施により、加工途中の曲串苧径の
修正、及びレンズ中央部に生じた突起状の未研削部分の
修正なども容易に行なうことができる利点がある。Furthermore, by carrying out the present invention, there is an advantage that the diameter of the curved skewer can be easily corrected during processing, and the protrusion-like unground portion formed at the center of the lens can be easily corrected.
また、各部の進退動可能な駆動手段、＠動軸の回動手段
にはパルス七−夕を用いることにより数値制御を行なう
ため作業の迅速化。In addition, numerical control is performed by using a pulse tanabata for the driving means that allows each part to move forward and backward, and for the rotating means of the moving shaft, which speeds up the work.
加工精度の向上化をより一層高めることがてきるなど種
々の骨徽を有するものである。It has various merits, such as the ability to further improve machining accuracy.
第ｔＩＩａは一般的なレンズの荒摺機の原理説明図で、
同ｇｂは同ｗｉａで利用される球面創成用工具の一例を
示す斜視図、第２図は本発明に係るレンズの荒摺機の構
成を示す正面一部所面図、第３ｉ！Ｉは本発明に係る他
の実施例を示す要部説明図である。
１・・・被加工レンズ
２・・・レンズホルダー
３・・・ワーク軸
４・嗜・球面創成用工具 （カップ形
状砥石）
５．１２・・・スライダ
６・・・軸受
８・・・回動軸
９・・・ハウジング
１０・・・回動台
１０ａ・・・載置台
１１６・・基台
１３・・・スピンドル
特許出願人 オリンパス光学工業株式（０）
（）Part tIIa is a diagram explaining the principle of a general lens roughening machine,
Fig. 2 is a perspective view showing an example of a spherical surface creation tool used in wia, Fig. 2 is a partial front view showing the configuration of a lens roughening machine according to the present invention, and Fig. 3i! I is a main part explanatory diagram showing another embodiment according to the present invention. 1... Lens to be processed 2... Lens holder 3... Work shaft 4... Tool for creating a spherical surface (cup-shaped grindstone) 5.12... Slider 6... Bearing 8... Rotation Axis 9...Housing 10...Rotating table 10a...Place table 116...Base 13...Spindle Patent applicant Olympus Optical Industry Co., Ltd. (0) ()
Claims (4)
削するレンズの球面荒摺機において１球面創成用工具を
、基台に設けた回動軸により被加工レンズに対する対向
角を可変可能に設けるとともに、上記球面創成用工具の
有するタイル軸と、上記被加工レンズを回転せしめるワ
ーク軸と、上記回動輪の各軸線を常に一点で来夏すべく
配設したことを特徴とするレンズの球面荒摺機。(1) In a lens spherical roughening machine that rotates the lens to be processed and grinds it with a tool for creating a spherical surface, the opposing angle of the tool for creating a spherical surface relative to the lens to be processed can be varied using a rotation axis provided on the base. and a tile axis of the spherical surface creation tool, a work axis for rotating the lens to be processed, and each axis of the rotating wheel are arranged so as to always be at one point next summer. Spherical roughening machine.
可能な駆動一手段を具備することを特徴とする特許請求
の範囲第１項記載のレンズの球面荒摺機。。(2) The spherical surface roughening machine for lenses as set forth in claim 1, wherein the work shaft and the spherical surface generating tool are provided with a drive means capable of moving forward and backward. .
球面創成用工具の進退動可能な駆動手段にパルスモータ
を用いたことを特徴とする特許請求の範囲第１項又は第
２項記載のレンズの球面荒摺機。(3) A pulse motor is used as the rotation means for the rotation shaft and the drive means for moving the work shaft and the spherical surface generation tool forward and backward, as claimed in claim 1 or 2. A spherical surface roughening machine for the lenses mentioned above.
）上記ワーク軸及びタイル軸と上記回動輪は艦直に配設
されていることを特徴とする特許請（６）上記球面創成
用工具はカップ状砥石にて彫成されていることを特徴と
する特許請求の範囲（７）上記タイル軸は上記カップ状
砥石の外周に偏(4) The work axis and tile axis are in the same plane (5
) The work shaft, the tile shaft, and the rotary wheel are disposed directly on the ship. (6) The tool for creating a spherical surface is carved using a cup-shaped grindstone. Claim (7) The tile shaft is biased toward the outer periphery of the cup-shaped grindstone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13718681A JPS5840259A (en) | 1981-09-01 | 1981-09-01 | Spherical face slider for lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13718681A JPS5840259A (en) | 1981-09-01 | 1981-09-01 | Spherical face slider for lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5840259A true JPS5840259A (en) | 1983-03-09 |
| JPS6133665B2 JPS6133665B2 (en) | 1986-08-04 |
Family
ID=15192806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13718681A Granted JPS5840259A (en) | 1981-09-01 | 1981-09-01 | Spherical face slider for lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5840259A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62246471A (en) * | 1986-04-17 | 1987-10-27 | Matsushita Electric Ind Co Ltd | Method and device for precision grinding |
| JPH03294164A (en) * | 1990-04-11 | 1991-12-25 | Toyotetsuku:Kk | Spherical face grinder |
| JPH04322957A (en) * | 1991-04-17 | 1992-11-12 | Terutoshi Yomo | Internal spherical surface honing method |
| JP2016083736A (en) * | 2014-10-28 | 2016-05-19 | 日立建機株式会社 | Spherical surface grinding apparatus and spherical surface grinding method using the same |
-
1981
- 1981-09-01 JP JP13718681A patent/JPS5840259A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62246471A (en) * | 1986-04-17 | 1987-10-27 | Matsushita Electric Ind Co Ltd | Method and device for precision grinding |
| JPH03294164A (en) * | 1990-04-11 | 1991-12-25 | Toyotetsuku:Kk | Spherical face grinder |
| JPH04322957A (en) * | 1991-04-17 | 1992-11-12 | Terutoshi Yomo | Internal spherical surface honing method |
| JP2016083736A (en) * | 2014-10-28 | 2016-05-19 | 日立建機株式会社 | Spherical surface grinding apparatus and spherical surface grinding method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6133665B2 (en) | 1986-08-04 |
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