JPH03117551A - Lens machining method and core-removing grindstone for lens machining - Google Patents

Lens machining method and core-removing grindstone for lens machining

Info

Publication number
JPH03117551A
JPH03117551A JP25472589A JP25472589A JPH03117551A JP H03117551 A JPH03117551 A JP H03117551A JP 25472589 A JP25472589 A JP 25472589A JP 25472589 A JP25472589 A JP 25472589A JP H03117551 A JPH03117551 A JP H03117551A
Authority
JP
Japan
Prior art keywords
lens
grindstone
grinding
centering
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.)
Granted
Application number
JP25472589A
Other languages
Japanese (ja)
Other versions
JPH072300B2 (en
Inventor
Akihide Wakamiya
若宮 章秀
Masaki Watanabe
正樹 渡辺
Ichiro Ushiyama
牛山 一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP1254725A priority Critical patent/JPH072300B2/en
Publication of JPH03117551A publication Critical patent/JPH03117551A/en
Publication of JPH072300B2 publication Critical patent/JPH072300B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To machine a lens having good core accuracy at a low cost by dividing machining in which grinding of peripheral side section on CG machining face side and grinding of chamfering section are carried out simultaneously into two times machining on the first face side and the second face side of the lens. CONSTITUTION:A lens 5 which is mounted to the tip of a workpiece spindle 4 is rotated to approach the workpiece spindle 4 relatively to a CG tool spindle 8 so that CG machining on a first face side is carried out by a CG grindstone 9. At the same time with this CG machining, a core-removing grindstone 13 is forced to make contact with the lens 5 to perform grinding on a peripheral side section 5a of the first face side and chamfering section. After this, CG machining on a second face side is carried out by matching optical axis of the lens to rotating axis of the workpiece with the spherical section 5c on the already machined first face side and the peripheral side section 5a balanced each other. At the same time with this, a core-removing grindstone 14 is forced to make with the lens 5 to grind a peripheral side section 5d and a chamfering section 5e on the second face side which are left as not ground when the first face side is machined.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、レンズ加工方法およびレンズ加工用芯取り砥
石に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lens processing method and a centering grindstone for lens processing.

〔従来の技術〕[Conventional technology]

従来のレンズ研削加工としては、光学機能面の創成研削
加工(以下、CG加工という)と該CG加工後に行う周
側面研削加工、面取り研削加工等があるが、従来は、C
G加工と周側面研削加工等は単独に別々の工程で行われ
るのが一般的であった。これら加工方法を、同時にもし
くは連続的に行う従来例としては、例えば実公昭51−
47669号公報(従来例1)、特開昭62−1526
64号公報(従来例2)、特開昭59−192449号
公報(従来例3)等に開示されているようなものが知ら
れている。
Conventional lens grinding includes optical functional surface creation grinding (hereinafter referred to as CG processing), circumferential surface grinding performed after CG processing, chamfer grinding, etc.
G machining, circumferential surface grinding, etc. were generally performed independently and in separate processes. Conventional examples of performing these processing methods simultaneously or consecutively include, for example,
Publication No. 47669 (Conventional Example 1), JP-A-62-1526
64 (Conventional Example 2), Japanese Unexamined Patent Publication No. 59-192449 (Conventional Example 3), and the like are known.

従来例1および従来例2のレンズ加工方法は、CG加工
に加えて面取り研削加工を行うものである。
The lens processing methods of Conventional Examples 1 and 2 perform chamfering and grinding in addition to CG processing.

これに対し、従来例3のレンズ研削機は、CG加工に加
えて周側面研削加工を行うもので、CG砥石の他に周側
面研削用砥石をレンズ外周に当接離反自在に設けている
On the other hand, the lens grinding machine of Conventional Example 3 performs circumferential side grinding in addition to CG processing, and in addition to the CG grindstone, a circumferential side grinding wheel is provided on the outer periphery of the lens so as to be able to come into contact with and separate from it.

しかしながら、上記3つの従来例は、CG加工と面取り
研削加工、もしくはCG加工と周側面研削加工とを同時
あるいは連続的に行う加工方法を提案したものである。
However, the above three conventional examples propose processing methods in which CG processing and chamfer grinding, or CG processing and circumferential side grinding are performed simultaneously or continuously.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、特開昭59−192449号(従来例3
)にみられる周側面研削加工は、第1面側、又は、第2
面側のいずれか一方のCG加工と同時あるいは連続的に
行われることにより完結するものである。すなわち、1
回の研削加工により、レンズの全外周部もしくは、全外
周部と両面の面取り部を加工してしまうという趣旨のも
のである。
However, JP-A No. 59-192449 (Conventional Example 3)
) The peripheral side grinding process seen in
This process is completed by performing CG processing on either side simultaneously or continuously. That is, 1
The idea is that the entire outer periphery of the lens, or the entire outer periphery and the chamfered portions on both sides, are processed by the second grinding process.

この方法によると、例えばレンズ保持手段として一般的
に広く行われているチャッキングでは、レンズ周側面部
を利用して保持されるため、上記のような加工では、レ
ンズ保持部材と周側面研削砥石が互いに干渉してしまい
、実施不可能ということになる。従って、レンズ保持手
段として、貼り付は法或いは球面部保持方法を用いざる
を得ないことになるが、これらは、前記のチャッキング
に比較し煩雑で、工数削減の見地から充分でない。
According to this method, for example, in chucking, which is commonly used as a lens holding means, the peripheral side of the lens is used to hold the lens, so in the above processing, the lens holding member and the peripheral side grinding wheel are will interfere with each other, making it impossible to implement. Therefore, as a lens holding means, it is necessary to use a pasting method or a spherical part holding method, but these methods are more complicated than the above-mentioned chucking and are not sufficient from the standpoint of reducing man-hours.

本発明は、かかる従来の問題点に鑑みてなされたもので
、レンズCG加工と周側面部、面取り部研削加工の同時
加工を第1面側、第2面側の2回に分割して行うことに
より、いずれのレンズ保持手段を問わず、加工工程短縮
によるレンズの低コスト化を図ることができるレンズ加
工方法およびレンズ加工用芯取り砥石を提供することを
目的としたものである。
The present invention has been made in view of such conventional problems, and the simultaneous processing of lens CG processing and grinding of the circumferential side surface and chamfered portion is divided into two times, one on the first surface side and one on the second surface side. Thus, the present invention aims to provide a lens processing method and a centering grindstone for lens processing, which can reduce the cost of lenses by shortening the processing steps, regardless of which lens holding means is used.

〔課題を解決するための手段および作用〕上記目的を達
成するために、本発明は、軸先端部に被加工体であるレ
ンズを保持する機構を有した回転自在なワークスピンド
ルユニットと、軸先端部にCG砥石を着脱自在に設ける
と共に、回転自在かつ前記ワークスピンドル先端部に相
対的に近接離反可能なCGツールスピンドルユニットお
よび軸外周部に芯取り砥石を着脱自在に設けると共に回
転自在かつ、砥石研削部が前記ワークスピンドル先端部
に相対的に近接離反可能な芯取りツールスピンドルユニ
ットとから構成されたレンズ加ニジステムにおいて、ワ
ークスピンドル先端部に装着したレンズを回転させなが
らワークスピンドルとCGツールスピンドルとを相対的
に接近させてCG砥石によりに第1面側のCG加工を行
い、このCG加工と同時に芯取り砥石をレンズに当接さ
せて第1面側の周側面部、および面取り部の研削加工を
行った後、次いで既に加工された第1面側の球面部およ
び周側面部を衝(位置決めの基準位置:衝)にして、レ
ンズ光学軸と、ワーク回転軸とを一致させるようにして
、第2面側のCG加工を行いこのCG加工と同時に、芯
取り砥石をレンズに当接させて第1面側加工時に削り残
された第2面側の周側面部および面取り部の研削加工を
行うことを特徴とするものである。
[Means and effects for solving the problem] In order to achieve the above object, the present invention provides a rotatable work spindle unit having a mechanism for holding a lens, which is a workpiece, at the tip of the shaft, and A CG tool spindle unit is provided with a CG grindstone removably attached to the part thereof, and is rotatable and can be moved relatively close to and separated from the tip of the work spindle; In the lens adding system, which is composed of a centering tool spindle unit in which the grinding section can approach and separate from the tip of the work spindle, the work spindle and the CG tool spindle are rotated while rotating the lens attached to the tip of the work spindle. CG processing is performed on the first surface side using a CG grindstone while the CG grindstones are brought relatively close to each other, and at the same time as this CG processing, a centering grindstone is brought into contact with the lens to grind the circumferential side portion and chamfered portion of the first surface side. After machining, the spherical part and circumferential side part on the first surface side which have already been machined are set at opposition (positioning reference position: opposition), so that the lens optical axis and the workpiece rotation axis are aligned. , CG processing is performed on the second surface side, and at the same time as this CG processing, a centering grindstone is brought into contact with the lens to grind the circumferential side portion and chamfered portion of the second surface side that were left uncut during processing on the first surface side. It is characterized by performing the following.

まな、芯取り砥石を円状板体で構成し、該板体の両面の
外周部および端面部にそれぞれ砥石部を設けて、研削時
に砥石数を少なくするようにしてコストの低下を図るよ
うにしたものである。
The centering whetstone is composed of a circular plate, and grindstone parts are provided on the outer periphery and end face of both sides of the plate to reduce the number of grindstones during grinding, thereby reducing costs. This is what I did.

〔実施例〕〔Example〕

(第1実施例) 第1図に本発明の第1実施例を説明するにあたってのレ
ンズ加ニジステムの概略図を示し、第2図aに第1面側
加工、第2図すに第2面側加工の状態をそれぞれ示す。
(First Embodiment) Fig. 1 shows a schematic diagram of a lens adding system for explaining the first embodiment of the present invention, Fig. 2 a shows processing on the first surface side, and Fig. The state of side machining is shown respectively.

第1図において、レンズ加ニジステムは、ワークスピン
ドルユニット1と、CGツールスピンドルユニント2と
、芯取りツールスピンドルユニット3とから概略構成さ
れている。
In FIG. 1, the lens adding system is roughly composed of a work spindle unit 1, a CG tool spindle unit 2, and a centering tool spindle unit 3.

ワークスピンドルユニットlのワークスピンドル4には
、その軸先端部にレンズ5を着脱自在に保持するレンズ
保持具6が設けられている。また、ワークスピンドル4
は、矢印イの方向(軸回り)に回転自在に設けられてい
るとともに、矢印口の方向(軸方向)に移動自在にして
ワークスピンドル支持体7により支持されている。
The work spindle 4 of the work spindle unit 1 is provided with a lens holder 6 that removably holds a lens 5 at its shaft end. Also, work spindle 4
is rotatably provided in the direction of arrow A (around the axis), and is supported by the work spindle support 7 so as to be movable in the direction of the arrow (in the axial direction).

CGツールスピンドルユニット2のCGツールスピンド
ル8には、その軸先端部にレンズ5の光学機能面を研削
する光学機能面研削用砥石9が着脱自在に装着されてい
る。また、CGツールスピンドル8は、矢印ハの方向(
軸回り)に回転自在に設けられていると共に、ワークス
ピンドル4の軸線(レンズ5の光軸と一致)とCGツー
ルスピンドル8の軸線とが常に同一平面内にあるように
、移動自在にCGツールスピンドル支持体10により支
持されている。すなわち、CGツールスピンドル8は、
ワークスピンドル4の軸線を含む平面内(第1図におい
ては水平面内)で、レンズ5の中心を揺動中心として矢
印二の方向に揺動自在であり、また軸と垂直な方向であ
る矢印ホの方向に直線移動自在に設けられている。
An optical functional surface grinding wheel 9 for grinding the optical functional surface of the lens 5 is detachably attached to the CG tool spindle 8 of the CG tool spindle unit 2 at its shaft tip. Further, the CG tool spindle 8 is moved in the direction of arrow C (
The CG tool is provided so that it can rotate freely around the axis (around the axis), and is movable so that the axis of the work spindle 4 (which coincides with the optical axis of the lens 5) and the axis of the CG tool spindle 8 are always in the same plane. It is supported by a spindle support 10. That is, the CG tool spindle 8 is
It is swingable in the direction of arrow 2 with the center of the lens 5 as the swing center within a plane including the axis of the work spindle 4 (in the horizontal plane in FIG. 1), and in the direction of arrow 2, which is perpendicular to the axis. It is provided so that it can move freely in a straight line in the direction of.

なお、光学機能面研削用砥石9は、レンズ5の半径の約
2〜3割増した創成刃先径を有している。
The grindstone 9 for grinding an optical functional surface has a generated cutting edge diameter that is approximately 20 to 30% larger than the radius of the lens 5.

芯取りツールスピンドルユニット3の芯数リツールスピ
ンドル12には、第1図および第2図に示すように、そ
の軸外周部にレンズ5の外周部を研削する円板状の外周
部研削用砥石13が着脱自在に装着されている。また、
芯取りツールスピンドル12は、矢印への方向(軸回り
)に回転自在に設けられているとともに、レンズ5の光
軸と平行にしてかつ矢印トの方向(軸方向)および矢印
チの方向(レンズ5の径方向、本実施例では鉛直方向)
にそれぞれ移動自在に設けられている。
As shown in FIGS. 1 and 2, the core number retooling spindle 12 of the centering tool spindle unit 3 has a disc-shaped outer peripheral grinding wheel for grinding the outer peripheral part of the lens 5 on the outer peripheral part of its axis. 13 is detachably attached. Also,
The centering tool spindle 12 is provided rotatably in the direction of the arrow (around the axis), and is parallel to the optical axis of the lens 5 and in the direction of the arrow G (axial direction) and the direction of the arrow C (the lens 5 in the radial direction, in this example, the vertical direction)
Each is movable.

第2図aに第1面側加工状態を示す。FIG. 2a shows the state of machining on the first side.

芯取り砥石13は、レンズ5の第1面側の周側面部5a
を研削する周側面砥石13aと、平面取り部5bを研削
する平面取り砥石13bとから構成されている。
The centering grindstone 13 is attached to the peripheral side surface portion 5a of the lens 5 on the first surface side.
It is composed of a circumferential side grindstone 13a for grinding the surface, and a flattening grindstone 13b for grinding the flattened portion 5b.

このような構成の芯取り砥石13を備えたレンズ研削機
によりレンズ5の加工を行うには、先ず、ワークスピン
ドル4、CGツールスピンドル8および芯取りツールス
ピンドル12をそれぞれ回転させると共に、ワークスピ
ンドル4を軸方向に前進移動させてレンズ5を光学機能
面研削用砥石9に当接させ、また芯取りツールスピンド
ル12を移動させて芯取り砥石13の周側面砥石13a
および、平面取り砥石13bをレンズ5の周側面部5a
および平面取り部5bに当接させる。そして、加工切り
込みの速度を1〜61111/sinとして、レンズ5
の光学機能面5c、周側面5aおよび平面取り部5bの
研削加工(CG加工および芯取り加工)を行う。
In order to process the lens 5 using the lens grinding machine equipped with the centering grindstone 13 having such a configuration, first, the work spindle 4, the CG tool spindle 8, and the centering tool spindle 12 are rotated, and the work spindle 4 is rotated. is moved forward in the axial direction to bring the lens 5 into contact with the optical functional surface grinding wheel 9, and the centering tool spindle 12 is moved to touch the peripheral side grindstone 13a of the centering grindstone 13.
Then, the flat grinding wheel 13b is attached to the peripheral side surface 5a of the lens 5.
and is brought into contact with the flattened portion 5b. Then, the processing cutting speed is set to 1 to 61111/sin, and the lens 5
Grinding processing (CG processing and centering processing) is performed on the optical functional surface 5c, peripheral side surface 5a, and flattened portion 5b.

その後、所定の切り込み世が終了したら、スパークアウ
ト研削に入る。スパークアウト研削終了後、ワークスピ
ンドル4を軸方向に後退移動させてレンズ5を光学機能
面研削用砥石9から離反させるとともに、芯取りツール
スピンドル12を移動させて芯取り砥石13をレンズ5
から離反させ、第1面側加工を終了する。
After that, when the predetermined cutting process is completed, spark-out grinding begins. After spark-out grinding is completed, the work spindle 4 is moved backward in the axial direction to separate the lens 5 from the grindstone 9 for grinding optical functional surfaces, and the centering tool spindle 12 is moved to move the centering grindstone 13 to the lens 5.
The first surface side machining is completed.

第2図すに第2面側面加工状態を示す。Figure 2 shows the machining state of the second side.

第1面側加工の終了したレンズ5の既に加工された周側
面部5aおよび球面部5Cを衝にして、レンズ保持具で
あるチャック爪6aおよび当て付はリング6bによって
レンズを保持する。上記保持具は、チャックされたレン
ズの光学軸とワーク回転軸が一致するように高精度に作
られている。
The lens is held by the chuck claw 6a and the abutment ring 6b, which are lens holders, with the already processed circumferential side surface 5a and the spherical surface 5C of the lens 5, which has been processed on the first surface side, facing each other. The holder is made with high precision so that the optical axis of the chucked lens and the rotational axis of the workpiece coincide.

芯取り砥石14は、レンズ5の第2面側の周側面部5d
を研削する周側面砥石14dと、面取り部5eを研削す
る面取り砥石14eとから構成されている。
The centering grindstone 14 is attached to the peripheral side surface portion 5d on the second surface side of the lens 5.
It is composed of a circumferential side grindstone 14d for grinding the chamfered portion 5e, and a chamfering grindstone 14e for grinding the chamfered portion 5e.

以下は、第1面側加工と同様の手順により、第2面側の
周側面5d、面取り部5e、球面部5fが加工される。
Hereinafter, the circumferential side surface 5d, chamfered portion 5e, and spherical surface portion 5f on the second surface side are processed using the same procedure as the first surface side processing.

以上のように本実施例によれば、外周を用いるチャック
による保持方法によっても、加工工程および、無駄な工
数を増やすことなく芯精度のよいレンズを研削加工する
ことができる。
As described above, according to this embodiment, a lens with good core accuracy can be ground without increasing processing steps or unnecessary man-hours even by the holding method using a chuck using the outer periphery.

なお、第3図に示すものは、第1面側、第2面側各々に
用いる芯取り砥石の先端形状を一枚の砥石の表面および
裏面に設けたものである。図示する15aが前記の周側
面砥石13aに、15bが平面取り砥石に、15dが周
側面砥石14dに、また、15eが面取り砥石14eに
それぞれ対応する。このような構成の砥石であれば、レ
ンズ一部品毎に一枚の砥石で済むことになり、コスト面
および管理の面で効果的である。
In addition, what is shown in FIG. 3 is one in which the tip shapes of the centering grindstone used for the first surface side and the second surface side are provided on the front and back surfaces of a single grindstone. In the figure, 15a corresponds to the circumferential side grindstone 13a, 15b corresponds to the flat grindstone, 15d corresponds to the circumferential side grindstone 14d, and 15e corresponds to the chamfered grindstone 14e. With a grindstone having such a configuration, one grindstone is required for each lens component, which is effective in terms of cost and management.

(第2実施例) 第4図に本発明の第2実施例を示す。これは、周側面部
に段差をもつレンベの加工方法を示すものである。
(Second Embodiment) FIG. 4 shows a second embodiment of the present invention. This shows a method for machining a rack having a step on its circumferential side.

加工手段は、第1実施例における場合と大体において同
じであるため、概略的に説明する。
The processing means is generally the same as in the first embodiment, and will therefore be briefly described.

まず、第4図aに示すように、第1面側の加工を行う。First, as shown in FIG. 4a, the first surface side is processed.

すなわち、図示省略したCG砥石により、球面部5cを
研削加工し、該研削加工同時に、芯取り砥石13の周側
面砥石13a部、および平面芯取り砥石13b部を第1
面側の周側面部5aおよび5bに当接させ、切り込み速
度1〜6 (m /wr * n )で、第5図に示す
ように、砥石軸方向および砥石軸に垂直な方向の中間の
方向に研削加工する。
That is, the spherical part 5c is ground by a CG grindstone (not shown), and at the same time, the circumferential side grindstone 13a part of the centering grindstone 13 and the plane centering grindstone 13b part are ground by the first grindstone.
It is brought into contact with the circumferential side parts 5a and 5b on the surface side, and at a cutting speed of 1 to 6 (m/wr*n), as shown in FIG. Grind to.

次に第4図すで示すように、第二面側の加工をおこなう
、すなわち、図示しないCG砥石により、球面部5fを
研削加工すると同時に、芯取り砥石14の周側面砥石1
4d部および段着部砥石14g部により、第2面側の周
側面部5dおよび段テーバ部5gを研削加工する。
Next, as already shown in FIG. 4, processing is performed on the second surface side, that is, the spherical surface portion 5f is ground using a CG grindstone (not shown), and at the same time, the circumferential side grindstone 1 of the centering grindstone 14 is processed.
The circumferential side surface portion 5d and the stepped taper portion 5g on the second surface side are ground by the portion 4d and the grinding wheel 14g of the stepped portion.

以上により段差をもつレンズの球面部、周側面部、段テ
ーバ部、面取り部の研削加工をすることができる。
As described above, it is possible to grind the spherical part, circumferential side part, stepped taper part, and chamfered part of a lens having a step.

本実施例のような複雑な形状をした周側面部をもつレン
ズを、1回の周側面研削加工および面取り部研削加工で
おわらせようとすると、芯取り砥石の刃先形状は、相当
複雑なものになることになり、他部品への互換性に乏し
いものとなる。さらに、そのような刃先形状を有した砥
石では、切り込み方向が、砥石軸に垂直な方向のみに限
定されてしまい、そのような加工方法によれば、第5図
に示したイ部、および口部に欠けを生じる可能性が高く
なる。
If we try to finish a lens with a complex-shaped circumferential side surface like the one in this example with one circumferential side grinding process and a chamfer grinding process, the cutting edge shape of the centering grindstone will have to be quite complex. This results in poor compatibility with other parts. Furthermore, with a grindstone having such a cutting edge shape, the cutting direction is limited to only the direction perpendicular to the grindstone axis, and according to such a processing method, the There is a high possibility that the parts will be chipped.

本実施例によれば上記のような問題点を、2回に分割し
て加工を行うことにより砥石先端形状は、平面部および
テーパ部とで構成された簡単なものとなり、他部品への
互換性を有し、切り込み方向への研削が可能となり、欠
けの問題もなく加工を行うことができる。
According to this embodiment, the above-mentioned problem can be solved by dividing the process into two parts, so that the shape of the tip of the grinding wheel is simple, consisting of a flat part and a tapered part, which makes it easy to use with other parts. This makes it possible to grind in the direction of the cut, and processing can be performed without the problem of chipping.

(第3実施例) 第6図は、本発明の第3実施例を示す。本実施例は、本
発明方法において使用する芯取り砥石に関するものであ
る。芯取り砥石13は円状板体で構成し、該円状板体の
周側面研削加工に用いる砥石部13a、13dおよび面
取り研削加工に用いる砥石部13b、 13eを有して
おり、砥石軸に対して垂直方向に切った面に対して対称
な形状をしている。
(Third Embodiment) FIG. 6 shows a third embodiment of the present invention. This example relates to a centering grindstone used in the method of the present invention. The centering whetstone 13 is composed of a circular plate body, and has whetstone parts 13a and 13d used for grinding the circumferential side of the circular plate body and whetstone parts 13b and 13e used for chamfering grinding process. It has a symmetrical shape with respect to the plane cut perpendicular to it.

本砥石を用いたレンズ加工の例を以下に示す。An example of lens processing using this grindstone is shown below.

第6図aにおいてレンズ第1面側加工が施される。In FIG. 6a, processing is performed on the first surface of the lens.

レンズ5には、その凸面側の周側面部の幅を大きくする
た勢に縁肉部15が設けられ、レンズ5はこの縁肉部1
5の周側面部および凸部側外周平面部によっていてレン
ズ保持具であるチャックつめ6a5および当て付はリン
グ6bに保持されている。
The lens 5 is provided with an edge portion 15 to increase the width of the circumferential side portion on the convex side.
A chuck pawl 6a5 and a stopper, which are lens holders, are held by the ring 6b by the circumferential side surface portion of the lens 5 and the outer circumferential plane portion of the convex portion side.

そして、この状態でCG砥石9により、球面部5cを研
削加工し、それと同時に芯取り砥石13の周側面砥石部
t3aおよび平面取り砥石部13bにより、第1面側の
周側面部5aおよび面取り部5bを研削加工する。
Then, in this state, the spherical surface part 5c is ground by the CG grindstone 9, and at the same time, the circumferential side surface part 5a and the chamfered part on the first surface side are ground by the circumferential side grindstone part t3a and the chamfered part 13b of the centering grindstone 13. Grind 5b.

次に、第6図すで示すように、レンズ第2面側加工が施
される。レンズ5は、第1面側加工において研削加工さ
れた周側面部5a、および球面部5Cを用いて、レンズ
保持具6aおよび6bでレンズ5を保持し、CG砥石9
により、球面部5rを研削加工する。このCG加工にお
いて、第1面側加工において残されたレンズ縁肉部15
が除去され、かつ、レンズの第2面側に面取りの必要が
ないため、第2面側加工においては、周側面部および面
取り部研削加工は行われない。
Next, as already shown in FIG. 6, processing is performed on the second surface of the lens. The lens 5 is held by lens holders 6a and 6b using the circumferential side surface portion 5a and the spherical surface portion 5C which were ground in the first surface side processing, and the CG grindstone 9
The spherical portion 5r is ground by the following steps. In this CG processing, the lens edge portion 15 left in the first surface side processing is
is removed and there is no need to chamfer the second surface of the lens, so in the second surface processing, grinding of the circumferential side surface and the chamfer is not performed.

本実施例のように、第1面側加工時に於いて、周側面部
および外周部研削加工が完了するようなレンズにおいて
は、芯取り砥石の表側および裏側を同じ形状のものにし
ておけば、芯取り砥石13を裏返して、砥石部13d、
および13eを用いて上記加工を行うことも可能となり
、砥石の寿命に関して、2倍の効果を得ることになる。
As in this embodiment, in a lens in which the grinding of the peripheral side surface and the outer peripheral part is completed during processing of the first surface, if the front and back sides of the centering grindstone are made to have the same shape, Turn over the centering whetstone 13, and the whetstone part 13d,
It is also possible to carry out the above processing using the grinding wheel 13e, which results in twice the effect on the life of the grindstone.

〔発明の効果〕〔Effect of the invention〕

以上、本発明によるレンズ加工方法によれば、レンズ保
持方法のいかんによらず、CG加工と、周側面および面
取り部器削加工を同時に行うことを可能にし、芯精度の
良いレンズを低コストで加工することができるようにな
った。
As described above, according to the lens processing method according to the present invention, regardless of the lens holding method, it is possible to perform CG processing and machining of the circumferential side and chamfered parts at the same time, and a lens with good center accuracy can be produced at a low cost. It is now possible to process.

また、本発明による、芯取り砥石によれば、上記による
レンズ加工方法においても、レンズ一部品に対し、芯取
り砥石は一枚で済むことになり、コストの面および、管
理の面において効果的である。
Furthermore, according to the centering grindstone of the present invention, even in the lens processing method described above, only one centering grindstone is required for one lens component, which is effective in terms of cost and management. It is.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の実施例を示し、第1図は概略図、第2図
(a)、(ハ)は第1実施例の説明図、第3図は芯取り
砥石の他実施例を示す一部側面図、第4図(a)。 (b)は第2実施例の説明図、第5図はレンズと砥石の
関係を示す説明図、 の説明図である。 第6図(a)。 (b)は第3実施例 1・・・ワークスピンドルユニット 2・・・CGツールスピンドルユニット3・・・芯数リ
ツールスピンドルユニッ4・・・ワークスピンドル 5・・・レンズ 6・・・レンズ保持具 7・・・ワークスピンドル支持体 8・・・CGツールスピンドル 9・・・研削用砥石 10・・・CGツールスピンドル支持体12・・・芯取
りツールスピンドル 13・・・芯取り砥石 ト
The drawings show embodiments of the present invention; FIG. 1 is a schematic diagram, FIGS. 2(a) and (c) are explanatory diagrams of the first embodiment, and FIG. 3 is an illustration showing another embodiment of the centering grindstone. Part side view, FIG. 4(a). (b) is an explanatory diagram of the second embodiment, and FIG. 5 is an explanatory diagram showing the relationship between the lens and the grindstone. Figure 6(a). (b) shows the third embodiment 1...Work spindle unit 2...CG tool spindle unit 3...Number of cores retool spindle unit 4...Work spindle 5...Lens 6...Lens holding Tool 7... Work spindle support 8... CG tool spindle 9... Grinding wheel 10... CG tool spindle support 12... Centering tool spindle 13... Centering grindstone

Claims (2)

【特許請求の範囲】[Claims] (1)軸先端部に被加工体であるレンズを保持する機構
を有した回転自在なワークスピンドルユニットと、軸先
端部に、前記レンズの球面創成用研削砥石を着脱自在に
設け、回転自在かつ前記ワークスピンドル先端部に相対
的に近接離反可能なCGツールスピンドルユニットおよ
び軸外周部にレンズの外周および面取り部研削用砥石(
芯取り砥石)を着脱自在に設けると共に回転自在かつ、
砥石研削部が前記ワークスピンドル先端部に相対的に近
接離反可能な芯取りツールスピンドルユニットとから構
成されるレンズ加工装置を用い、上記球面創成用研削砥
石により行われるレンズの光学機能面の創成研削加工と
、上記芯取り砥石により行われるCG加工面側の周側面
部、面取部研削加工とを同時に行う加工を、レンズ第1
面側および第2面側の2回の加工に分割して行うことを
特徴とするレンズ加工方法。
(1) A rotatable work spindle unit having a mechanism for holding a lens, which is a workpiece, at the tip of the shaft, and a grinding wheel for creating the spherical surface of the lens removably installed at the tip of the shaft, which is rotatable and A CG tool spindle unit that can be moved relatively close to and separated from the tip of the work spindle, and a grindstone for grinding the outer periphery of the lens and the chamfered portion (
A centering grindstone) is provided removably and rotatably,
Generative grinding of the optical functional surface of a lens is performed by the above-mentioned spherical surface generating grinding wheel using a lens processing device comprising a centering tool spindle unit in which a whetstone grinding section can move relatively close to and away from the tip of the work spindle. The first lens
A lens processing method characterized in that processing is carried out in two steps: one on the surface side and one on the second surface side.
(2)レンズ加工における周側面部、面取部研削加工用
砥石(芯取り砥石)を円状板体で構成し、該円状板体状
の片面側の外周部および端面部と、その反対面側外周部
および端面部にそれぞれ砥石部を設けたことを特徴とす
るレンズ加工用芯取り砥石。
(2) The grinding wheel (centering grindstone) for grinding the circumferential side part and chamfer part in lens processing is composed of a circular plate, and the outer peripheral part and end face on one side of the circular plate shape and the opposite side A centering grindstone for lens processing, characterized in that a grindstone part is provided on the outer circumferential part of the surface side and the end face part.
JP1254725A 1989-09-29 1989-09-29 Lens processing method Expired - Fee Related JPH072300B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1254725A JPH072300B2 (en) 1989-09-29 1989-09-29 Lens processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1254725A JPH072300B2 (en) 1989-09-29 1989-09-29 Lens processing method

Publications (2)

Publication Number Publication Date
JPH03117551A true JPH03117551A (en) 1991-05-20
JPH072300B2 JPH072300B2 (en) 1995-01-18

Family

ID=17268983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1254725A Expired - Fee Related JPH072300B2 (en) 1989-09-29 1989-09-29 Lens processing method

Country Status (1)

Country Link
JP (1) JPH072300B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2010058740A1 (en) * 2008-11-19 2012-04-19 コニカミノルタオプト株式会社 Manufacturing method of aspherical lens
JP2014161984A (en) * 2013-02-27 2014-09-08 Olympus Corp Lens processing device, lens processing method, lens processing tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61159378A (en) * 1984-12-28 1986-07-19 Hoya Corp Grinding whetstone

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61159378A (en) * 1984-12-28 1986-07-19 Hoya Corp Grinding whetstone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2010058740A1 (en) * 2008-11-19 2012-04-19 コニカミノルタオプト株式会社 Manufacturing method of aspherical lens
JP2014161984A (en) * 2013-02-27 2014-09-08 Olympus Corp Lens processing device, lens processing method, lens processing tool

Also Published As

Publication number Publication date
JPH072300B2 (en) 1995-01-18

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