JP2723158B2 - Processing method of toroidal surface - Google Patents
Processing method of toroidal surfaceInfo
- Publication number
- JP2723158B2 JP2723158B2 JP4023131A JP2313192A JP2723158B2 JP 2723158 B2 JP2723158 B2 JP 2723158B2 JP 4023131 A JP4023131 A JP 4023131A JP 2313192 A JP2313192 A JP 2313192A JP 2723158 B2 JP2723158 B2 JP 2723158B2
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- JP
- Japan
- Prior art keywords
- axis
- curvature
- rotating
- toroidal surface
- radius
- 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 - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明はトロイダル面をもった光
学部品などを加工するトロイダル面の加工方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing a toroidal surface for processing an optical component having a toroidal surface.
【０００２】[0002]
【従来の技術】トロイダル面とは、図７に示す如く円柱
の軸を、円１２に沿って曲げた場合に生ずる表面１０を
いい、トロイダル面を有するレンズは、トロイダル・レ
ンズ、トーリック・レンズまたはｆθレンズと呼ばれ
る。このようなレンズはレーザビーム・プリンタなどに
面倒れ補正レンズとしてよく使用される。なお、図７で
１４は母線平面、１８は子線平面であって、母線平面１
４と交わる表面１０により形成される曲線１６，１６ａ
の曲率半径を母線曲率半径といい、子線平面１８と交わ
る表面１０により形成される曲線２０の曲率半径を子線
曲率半径という。2. Description of the Related Art A toroidal surface refers to a surface 10 that is formed when a cylinder axis is bent along a circle 12 as shown in FIG. 7, and a lens having a toroidal surface is a toroidal lens, a toric lens or a toric lens. It is called an fθ lens. Such a lens is often used as a tilt correction lens in a laser beam printer or the like. In FIG. 7, 14 is a bus plane, 18 is a sagittal plane, and the bus plane 1
Curve 16, 16a formed by surface 10 intersecting
Is called a generatrix radius of curvature, and the radius of curvature of a curve 20 formed by the surface 10 intersecting with the sagittal plane 18 is called a sagittal radius of curvature.
【０００３】従来のトロイダル・レンズの加工装置２２
は、図８に示す如く旋盤の回転主軸２４に円筒状のレン
ズ基材２６を取付け、この基材２６をＮＣ制御により駆
動されるＸＹテーブル２８に取付けたバイト３０によっ
て切削していく。この際、基材２６の内周面２６ａの内
径は母線半径になり、軸線を含む水平面と内周面２６ａ
との交線の曲率半径は子線半径になる。ＸＹテーブル２
８はバイト３０の先端を前記水平面に維持しつつ子線曲
率を描きながら水平移動することになる。A conventional toroidal lens processing apparatus 22
As shown in FIG. 8, a cylindrical lens substrate 26 is mounted on a rotary main shaft 24 of a lathe, and the substrate 26 is cut by a cutting tool 30 mounted on an XY table 28 driven by NC control. At this time, the inner diameter of the inner peripheral surface 26a of the base 26 is the radius of the generatrix, and the horizontal plane including the axis and the inner peripheral surface 26a
The radius of curvature of the line of intersection with is the sagittal radius. XY table 2
8 moves horizontally while drawing the sagittal curvature while maintaining the tip of the cutting tool 30 in the horizontal plane.
【０００４】基材２６は切削加工終了後に半径方向に取
り外され、図５（ａ）に示すレンズ要素３２を複数個得
る。このレンズ要素３２は子線曲率半径がＲ、母線曲率
半径が両端部のｒ1から中央部のｒ2へと連続的に減少変
化する形状をなす。[0004] The base material 26 is removed in the radial direction after the completion of the cutting process to obtain a plurality of lens elements 32 shown in FIG. The lens element 32 has a shape in which the sagittal radius of curvature is R and the radius of curvature of the generatrix continuously decreases from r 1 at both ends to r 2 at the center.
【０００５】[0005]
【発明が解決しようとする課題】前記した従来の加工方
法では、図５（ｂ）に示すような中央部の母線曲率半径
ｒ2が極端に小さいレンズ要素３４を加工しようとする
と、図８から分かるように基材２６の穴が中央部で狭く
括れた形となり、バイト３０が穴と干渉して奥まで進む
ことができない。このため、この種のレンズ要素３４の
加工は従来不可能とされてきた。According to the above-mentioned conventional processing method, if it is attempted to process a lens element having an extremely small generatrix radius of curvature r2 at the center as shown in FIG. Thus, the hole of the base material 26 is narrowly narrowed at the center, and the cutting tool 30 interferes with the hole and cannot proceed to the back. For this reason, processing of this type of lens element 34 has conventionally been impossible.
【０００６】 また、従来はバイト３０を挿入するため
に基材２６の穴の端部の半径（母線曲率半径）は所定の
大きさが必要であった。従って図６（ａ）に示すような
子線曲率半径Ｒが比較的小さく、母線曲率半径が中央部
のr2から端部のr1へ行くにつれて非常に小さくなってい
る形状のレンズ要素３３の加工も不可能とされてきた。
さらに、従来はＸＹテーブル２８を使用していたの
で、ＸＹテーブル２８を往動から復動に切り替える際、
すなわち図５（ａ）のようなレンズ要素３２を加工する
場合では、レンズ要素３２のトロイダル面４２の中央部
を越えた時、すなわち図８でＸＹテーブル２８をＹ方向
に戻す時、その送り機構のバックラッシュ分だけテーブ
ルがＹ方向に瞬間的に動かない状態が生ずるのを避ける
ことができなかった。従ってレンズ要素３２の加工精度
には限界があった。Conventionally, the radius of the end of the hole (generating radius of curvature) of the hole of the base material 26 for inserting the cutting tool 30 has to be a predetermined size. Thus FIGS. 6 (a) to sagittal curvature radius R is relatively small as shown, bus radius of curvature from the r 2 of the central portion of the shape is extremely small as going to r 1 of the end portion of the lens element 33 Processing has also been considered impossible.
Further, since the XY table 28 was conventionally used, when switching the XY table 28 from the forward movement to the backward movement,
That is, in the case of processing the lens element 32 as shown in FIG. 5A, when the XY table 28 is returned to the Y direction when the XY table 28 is returned beyond the center of the toroidal surface 42 of the lens element 32 in FIG. It cannot be avoided that the table does not move momentarily in the Y direction by the amount of the backlash. Therefore, the processing accuracy of the lens element 32 is limited.
【０００７】またさらに、従来はレンズ基材２６が軸線
方向に長尺のとき、バイト３０を延ばすにしても加工中
にビビリが発生しやすく、基材２６の重量も大きくなる
から実質的に長尺レンズ基材ないし長尺レンズ要素の加
工は不可能であった。Further, conventionally, when the lens substrate 26 is long in the axial direction, even if the cutting tool 30 is extended, chattering is likely to occur during processing and the weight of the substrate 26 increases, so that the lens substrate 26 is substantially long. Processing of a long lens substrate or a long lens element was impossible.
【０００８】[0008]
【課題を解決するための手段】本発明は、子線曲率半径
が一定であるが母線曲率半径は変化するトロイダル面を
加工する方法において、回転主軸の先端に、前記回転主
軸の軸線から一定の子線曲率半径分だけ刃先を離間させ
たバイトを取付け、軸線が前記回転主軸の軸線と直角を
なして配設された回動テーブル上にレンズ基材を取付
け、かつ、前記回転主軸と回動テーブルの軸線相互間距
離を、前記回動テーブルの軸線に対する前記バイトの刃
先の最接近距離が最小母線曲率半径と一致するように設
定し、前記回転主軸と回動テーブルを回転させながら、
前記バイトの刃先で前記レンズ基材の表面を切削してト
ロイダル面を形成するようにしたトロイダル面の加工方
法である。また本発明は、前記バイトを刃先を内向きに
して前記回転主軸の先端に取付け、前記レンズ基材の切
削面を前記回転主軸を背後にして前記回動テーブルの軸
線側に臨ませた請求項１記載のトロイダル面の加工方法
である。また本発明は、前記バイトを刃先を外向きにし
て前記回転主軸の先端に取付け、前記レンズ基材の切削
面を前記回動テーブルの軸線を背後にして前記回転主軸
側に臨ませた請求項１記載のトロイダル面の加工方法で
ある。According to the present invention, there is provided a method of processing a toroidal surface having a constant sagittal radius of curvature but a varying radius of curvature of a bus bar, comprising the steps of: Attach a cutting tool whose cutting edge is separated by the radius of curvature of the sagittal wire, attach the lens base material on a rotating table whose axis is perpendicular to the axis of the rotating spindle, and rotate with the rotating spindle. The distance between the axes of the table is set such that the closest approach distance of the cutting edge of the cutting tool to the axis of the rotating table matches the minimum radius of curvature of the bus bar, while rotating the rotating main shaft and the rotating table,
A toroidal surface processing method in which a surface of the lens substrate is cut with a cutting edge of the cutting tool to form a toroidal surface. Further, in the present invention, the cutting tool is attached to the tip of the rotating spindle with the cutting edge facing inward, and the cutting surface of the lens substrate faces the axis of the rotating table behind the rotating spindle. 1. The method for processing a toroidal surface according to 1. Further, in the present invention, the cutting tool is attached to the tip of the rotary spindle with the cutting edge facing outward, and the cut surface of the lens base is facing the rotary spindle with the axis of the rotary table behind. 1. The method for processing a toroidal surface according to 1.
【０００９】[0009]
【作用】バイトを子線曲率半径位置で回転主軸に取付け
て回転させ基材に当てると、基材の表面に細い子線曲率
面が形成される。この状態で回動テーブルを回動させる
と、回動テーブルの軸線を中心とする前記子線曲率面の
回転形状すなわちトロイダル面が基材表面に形成され
る。このトロイダル面の任意の点と回動テーブルの軸線
との距離は母線曲率半径をなす。バイトの刃先を内向き
とし、基材の切削面を回転主軸と同じ側において回動テ
ーブルの軸線側に臨ませることにより、母線曲率面が凹
で子線曲率面が凸のトロイダル面が形成される。またバ
イトの刃先を外向きとし、基材の切削面を回転主軸と反
対側において回動テーブルの軸線側に臨ませることによ
り、母線曲率面と子線曲率面が共に凹のトロイダル面が
形成される。この種のトロイダル面は、従来の円筒状基
材の内周面をバイトで切削する方法では、特に母線曲率
半径が小さい箇所より深くバイトを挿入することが不可
能なため実現することができなかったものである。When the cutting tool is attached to the rotating main shaft at the sagittal radius radius position and rotated to hit the base material, a thin sagittal curvature surface is formed on the surface of the base material. When the rotating table is rotated in this state, the rotational shape of the sagittal curvature surface around the axis of the rotating table, that is, a toroidal surface is formed on the base material surface. The distance between any point on the toroidal surface and the axis of the rotary table forms a generatrix radius of curvature. With the cutting edge of the cutting tool facing inward and the cutting surface of the base material facing the axis side of the rotary table on the same side as the rotating spindle, a toroidal surface having a concave curvature in the generatrix and a convex curvature in the sagittal curve is formed. You. In addition, the cutting edge of the cutting tool is directed outward, and the cutting surface of the base material faces the axis side of the rotary table on the opposite side to the rotating spindle, thereby forming a toroidal surface in which both the generatrix and the sagittal curvature are concave. You. This type of toroidal surface cannot be realized by the conventional method of cutting the inner peripheral surface of a cylindrical base material with a cutting tool, because it is impossible to insert a cutting tool deeper particularly at a location where the bus curvature radius is small. It is a thing.
【００１０】[0010]
【実施例】以下、本発明の実施例につき説明する。Embodiments of the present invention will be described below.
【００１１】図１および２は本発明の第１実施例に係る
トロイダル面の加工装置３５を示す。バイト３０は旋盤
の水平な回転主軸２４に刃先を内側にして取付けられて
いる。回転主軸の軸線Ｌ１からバイト３０の刃先までの
距離Ｒは子線曲率半径に設定されている。一方、レンズ
等の基材３６は水平な回動テーブル３８の上に固定的に
配設された取付け治具４０に取付けられている。回転主
軸２４の軸線Ｌ１と回動テーブル３８の軸線Ｌ２とは直
角をなしており、回動テーブル３８は回転主軸２４と同
期して矢印ａ方向に連続的に回動するように構成されて
いる。FIGS. 1 and 2 show a toroidal surface processing apparatus 35 according to a first embodiment of the present invention. The cutting tool 30 is mounted on the horizontal rotary spindle 24 of the lathe with its cutting edge inside. The distance R from the axis L1 of the rotary spindle to the cutting edge of the cutting tool 30 is set to the sagittal radius of curvature. On the other hand, a substrate 36 such as a lens is mounted on a mounting jig 40 fixedly disposed on a horizontal rotating table 38. The axis L1 of the rotary main shaft 24 and the axis L2 of the rotary table 38 are perpendicular to each other, and the rotary table 38 is configured to rotate continuously in the direction of arrow a in synchronization with the rotary main shaft 24. .
【００１２】 次に前記加工装置３５の作用について説
明する。回転主軸２４を回転させ基材３６にバイト３０
の刃先を当てると、基材３６の表面に半径Ｒの細い子線
曲率面が形成される。この状態で回動テーブル３８をゆ
っくりと回動させると、基材３６が切削されてその表面
に前記子線曲率面の軸線Ｌ２を中心とする回転面、すな
わちトロイダル面４２が形成される。このトロイダル面
４２の母線曲率半径を最大でr1、最小でr2とする場合
は、軸線Ｌ２からトロイダル面４２の上下両端部までの
距離がr1、中央部までの距離がr2となるまで回動テーブ
ル３８を図１でＸ方向に移動させる。Next, the operation of the processing device 35 will be described. The rotating spindle 24 is rotated so that the cutting tool 30
When the cutting edge is applied, a small sagittal curved surface having a radius R is formed on the surface of the base material 36. When the rotation table 38 is slowly rotated in this state, the base material 36 is cut, and a rotation surface around the axis L2 of the sagittal curvature surface, that is, a toroidal surface 42 is formed on the surface. When the generatrix radius of curvature of the toroidal surface 42 is r 1 at the maximum and r 2 at the minimum, the distance from the axis L2 to the upper and lower ends of the toroidal surface 42 is r 1 , and the distance from the center to r 2 is r 2. The rotation table 38 is moved in the X direction in FIG.
【００１３】図２から分かるように、本装置３５では基
材３６を軸線Ｌ２に対し限りなく近接させることができ
る。このため図５（ｂ）に示すような、トロイダル面４
２の中央部において母線曲率半径r2が非常に小さいレン
ズ要素３４でも加工することができる。極端に言えば、
母線半径r2が実質的に０となるレンズ要素でも加工可能
である。As can be seen from FIG. 2, in the present apparatus 35, the substrate 36 can be brought as close as possible to the axis L2. For this reason, the toroidal surface 4 as shown in FIG.
The lens element 34 having a very small radius of curvature r 2 at the center of the lens element 2 can be machined. Extremely speaking,
Even a lens element having a generatrix radius r2 of substantially 0 can be processed.
【００１４】従来の技術では曲率半径r2の位置でＸＹテ
ーブル２８の送り機構のバックラッシュの影響が出てい
たが、本装置では回動テーブル３８を使用するためこの
ようなバックラッシュの影響が全くない。従ってトロイ
ダル面４２を全面に亘り高精度に仕上げることができ
る。In the prior art, the influence of the backlash of the feed mechanism of the XY table 28 appears at the position of the radius of curvature r2. However, in the present apparatus, since the rotary table 38 is used, the influence of such backlash is completely lost. Absent. Therefore, the toroidal surface 42 can be finished with high accuracy over the entire surface.
【００１５】また、本装置はバイト３０で基材３６に穴
をあけて切削するのではなく、基材３６の外面を切削す
るから、長尺な基材３６でも切削加工可能である。また
回動テーブル３８はゆっくりと回動するから、比較的重
量のある大型の基材３６でも安定切削が可能である。In addition, since the present apparatus cuts the outer surface of the base material 36 instead of cutting the base material 36 with the cutting tool 30 by cutting a hole, the long base material 36 can be cut. Further, since the rotation table 38 rotates slowly, stable cutting can be performed even for a relatively large and large base material 36.
【００１６】 次に、本発明の第２実施例に係るトロイ
ダル面４６の加工装置４４を図３および４に示す。なお
図１および２と同一部分には同一符号を付してその説明
を省略する。この装置４４はバイト３０の刃先を外側に
向け、基材３６の加工面を軸線Ｌ２よりもバイト３０側
に位置させているので、基材３６の表面に子線曲率面が
凹面、母線曲率面が凸面のトロイダル面を加工する。加
工されたレンズ要素３７は図５（ｃ）に示す如く、両端
部の母線曲率半径がr1、中央部の母線曲率半径がr2、子
線曲率半径がＲのトロイダル面４６を有する。Next, an apparatus 44 for processing a toroidal surface 46 according to a second embodiment of the present invention is shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. In this device 44, the cutting edge of the cutting tool 30 faces outward and the processing surface of the base material 36 is located closer to the cutting tool 30 than the axis L2, so that the sagittal curvature surface is concave on the surface of the base material 36, and the generatrix curvature surface. Machine the convex toroidal surface. Machined lens element 37 is as shown in FIG. 5 (c), the generatrix curvature radius r 1 of the two ends, the generatrix curvature radius of the central portion is r 2, the sagittal curvature radius having a toroidal surface 46 of the R.
【００１７】なお、回動テーブル３８と共に、または回
動テーブル３８に代えてＸ−Ｙテーブルを使用すれば、
トロイダル面以外に、種々の非球面も加工可能となる。If an XY table is used together with or instead of the rotating table 38,
In addition to the toroidal surface, various aspheric surfaces can be processed.
【００１８】以上の実施例から分かるように、本発明は
バイト３０の刃先の向きと、回動テーブル３８に取付け
られる基材３６加工面の位置によって、出来上がるトロ
イダル面の形状が異なってくる。次の表１はバイト３０
の刃先の向き、基材３６加工面の位置およびトロイダル
面の形状の関係をまとめたものである。As can be seen from the above embodiment, in the present invention, the shape of the toroidal surface to be formed differs depending on the direction of the cutting edge of the cutting tool 30 and the position of the processing surface of the base material 36 attached to the rotary table 38. Table 1 below shows byte 30
Of the cutting edge, the position of the processing surface of the base material 36, and the shape of the toroidal surface.
【００１９】[0019]
【表１】 同表の(1) が図５（ａ），（ｂ）のレンズ要素３２，３
４に、(2) が図６（ｂ）のレンズ要素４８に、(3) が図
５（ｃ）のレンズ要素３７に、(4) が図６（ａ）のレン
ズ要素３３にそれぞれ対応する。[Table 1] (1) in the table is the lens element 32, 3 in FIGS. 5 (a) and 5 (b).
4, (2) corresponds to the lens element 48 of FIG. 6B, (3) corresponds to the lens element 37 of FIG. 5C, and (4) corresponds to the lens element 33 of FIG. .
【００２０】以上、本発明の実施例につき説明したが、
本発明は前記実施例に限定されることなく種々の変形が
可能である。例えば前記実施例では基材からレンズ要素
を加工する場合を説明したが、トロイダル面を有する金
型の製作にも本発明を応用することができる。The embodiments of the present invention have been described above.
The present invention can be variously modified without being limited to the above embodiment. For example, in the above-described embodiment, the case where the lens element is processed from the base material has been described. However, the present invention can be applied to the manufacture of a mold having a toroidal surface.
【００２１】[0021]
【発明の効果】本発明は前述の如く、回転主軸に取付け
たバイトによって回動テーブル上の基材を加工するの
で、バイト刃先の向きおよび回動テーブル上での基材加
工面の位置を変えることにより、従来不可能とされてい
た形状のトロイダル面を含む、色々な種類のトロイダル
面の加工が可能となる。例えば、従来不可能とされてい
た凸の子線曲率面を有し凹の母線曲率面の半径が中央部
で極めて小さいトロイダル面や、凹の子線曲率面を有し
母線曲率半径が端に行くほど小さくなっているトロイダ
ル面の加工が可能となる。また本発明はＸＹテーブルを
使用しないので、バックラッシュに起因する加工誤差を
排除することができる。また本発明は基材に穴を形成す
ることなくトロイダル面を加工するから、長尺基材から
長尺のトロイダル面を容易に加工することができる。ま
た基材を回動テーブル上に支持しているから、比較的重
量のある長尺基材でも安定的に加工できる。As described above, according to the present invention, the base material on the rotary table is processed by the tool attached to the rotary spindle, so that the direction of the cutting edge and the position of the base material processing surface on the rotary table are changed. Accordingly, it is possible to process various types of toroidal surfaces including a toroidal surface having a shape that has been impossible in the past. For example, the radius of the concave busbar curvature surface having a convex sagittal curvature surface which has been considered impossible in the past, the radius of the concave busbar curvature surface is extremely small at the center, or the busbar curvature radius having the concave sagittal curvature surface is at the end. It becomes possible to process toroidal surfaces that become smaller as they go. Further, since the present invention does not use the XY table, it is possible to eliminate a processing error caused by backlash. Further, according to the present invention, since the toroidal surface is processed without forming a hole in the base material, a long toroidal surface can be easily processed from a long base material. Further, since the base material is supported on the rotating table, a relatively heavy long base material can be stably processed.
【図１】本発明の第１実施例に係るトロイダル面の加工
装置の平面図。FIG. 1 is a plan view of a toroidal surface processing apparatus according to a first embodiment of the present invention.
【図２】図１の加工装置の正面図。FIG. 2 is a front view of the processing apparatus of FIG. 1;
【図３】本発明の第２実施例に係るトロイダル面の加工
装置の平面図。FIG. 3 is a plan view of a toroidal surface processing apparatus according to a second embodiment of the present invention.
【図４】図３の加工装置の正面図。FIG. 4 is a front view of the processing apparatus of FIG. 3;
【図５】（ａ）、（ｂ）および（ｃ）はそれぞれトロイ
ダル面を有するレンズ要素の斜視図。5 (a), (b) and (c) are perspective views of lens elements each having a toroidal surface.
【図６】（ａ）および（ｂ）はそれぞれトロイダル面を
有するレンズ要素の斜視図。FIGS. 6A and 6B are perspective views of lens elements each having a toroidal surface.
【図７】トロイダル面を説明するための斜視図。FIG. 7 is a perspective view illustrating a toroidal surface.
【図８】従来のトロイダル面の加工装置の斜視図。FIG. 8 is a perspective view of a conventional toroidal surface processing apparatus.
２４ 回転主軸 ３０ バイト 32,33,34,37,48,50 レンズ要素 35,44 トロイダル面の加工装置 ３６ 基材 ３８ 回動テーブル 42,46 トロイダル面 24 Rotating spindle 30 bytes 32,33,34,37,48,50 Lens element 35,44 Toroidal surface processing device 36 Base material 38 Rotating table 42,46 Toroidal surface
Claims (3)
は変化するトロイダル面を加工する方法において、 回転主軸の先端に、前記回転主軸の軸線から一定の子線
曲率半径分だけ刃先を離間させたバイトを取付け、 軸線が前記回転主軸の軸線と直角をなして配設された回
動テーブル上にレンズ基材を取付け、かつ、 前記回転主軸と回動テーブルの軸線相互間距離を、前記
回動テーブルの軸線に対する前記バイトの刃先の最接近
距離が最小母線曲率半径と一致するように設定し、 前記回転主軸と回動テーブルを回転させながら、前記バ
イトの刃先で前記レンズ基材の表面を切削してトロイダ
ル面を形成するようにしたトロイダル面の加工方法。1. A method for machining a toroidal surface having a constant radius of curvature of a sagittal line but a variable radius of curvature of a generatrix, comprising the steps of: Attach the separated cutting tool, mount the lens substrate on a rotating table whose axis is perpendicular to the axis of the rotating main shaft, and determine the distance between the axes of the rotating main shaft and the rotating table. The closest approach distance of the cutting edge of the cutting tool with respect to the axis of the rotating table is set so as to match the minimum radius of curvature of the tool bar. A toroidal surface processing method in which the surface is cut to form a toroidal surface.
に向けて前記回転主軸の先端に取付け、 前記レンズ基材の切削面を前記回転主軸の軸線を背後に
して前記回動テーブルの軸線側に臨ませた請求項１記載
のトロイダル面の加工方法。2. A cutting edge of the cutting tool is set on the axis side of the rotating spindle.
2. The method of processing a toroidal surface according to claim 1, wherein the cutting surface of the lens base material is located on the axis side of the rotary table with the axis of the rotary spindle behind the axis of the rotary spindle. 3.
反対側に向けて前記回転主軸の先端に取付け、 前記レンズ基材の切削面を前記回動テーブルの軸線を背
後にして前記回転主軸側に臨ませた請求項１記載のトロ
イダル面の加工方法。3. The cutting tool has a cutting edge aligned with the axis of the rotating spindle.
2. The method for processing a toroidal surface according to claim 1, wherein the cutting surface of the lens substrate is attached to a tip of the rotating spindle toward an opposite side, and the cut surface of the lens base is made to face the rotating spindle with the axis of the rotating table behind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4023131A JP2723158B2 (en) | 1992-02-10 | 1992-02-10 | Processing method of toroidal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4023131A JP2723158B2 (en) | 1992-02-10 | 1992-02-10 | Processing method of toroidal surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05220649A JPH05220649A (en) | 1993-08-31 |
| JP2723158B2 true JP2723158B2 (en) | 1998-03-09 |
Family
ID=12101978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4023131A Expired - Lifetime JP2723158B2 (en) | 1992-02-10 | 1992-02-10 | Processing method of toroidal surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2723158B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5968963B2 (en) * | 2014-08-28 | 2016-08-10 | Idec株式会社 | Optical information reader |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4855475A (en) * | 1971-11-15 | 1973-08-03 |
-
1992
- 1992-02-10 JP JP4023131A patent/JP2723158B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05220649A (en) | 1993-08-31 |
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