JPS618270A - Curved-face polishing apparatus - Google Patents
Curved-face polishing apparatusInfo
- Publication number
- JPS618270A JPS618270A JP13034784A JP13034784A JPS618270A JP S618270 A JPS618270 A JP S618270A JP 13034784 A JP13034784 A JP 13034784A JP 13034784 A JP13034784 A JP 13034784A JP S618270 A JPS618270 A JP S618270A
- Authority
- JP
- Japan
- Prior art keywords
- machining
- workpiece
- curved
- rotary
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/182—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by the machine tool function, e.g. thread cutting, cam making, tool direction control
- G05B19/184—Generation of cam-like surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、光学レンズ、ミラー等の曲面創成研磨装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a curved surface creation polishing apparatus for optical lenses, mirrors, and the like.
従来例の構成とその問題点
従来の曲面の創成装置、特に非球面レンズの創２ ペー
ジ
成装置の被加工物及び加工工具の動作を示す概念図を第
１図に示す。回転スピンドルに取り付けられ、被加工物
１の接線方向ａ方向に回転する加工工具２は、被加工物
１を加工するポイントに於て常に創成曲面３に対して垂
直に位置する機制御され、又、被加工物１は、直交２軸
の移動機構により、加工工具２の加工ポイントに対して
所定の曲面を創成する機制御され運動するとともに、さ
らに、この被加工物１は、ｂ方向に回転することにより
、回転対象曲面が創成される。 ・しかしながら、上記
のような構成では、加工工具２の形状による誤差を抑え
る為、加工工具２を被加工物１の創成曲面３に対し、垂
直に位置する機制御することが必要となり、制御内容及
び機械的構成が複雑になり、加工精度の確保が困難であ
るという欠点を有していた。Structure of a conventional example and its problems FIG. 1 is a conceptual diagram showing the operation of a workpiece and a machining tool of a conventional curved surface generating apparatus, particularly an aspherical lens generating apparatus. A machining tool 2 attached to a rotating spindle and rotating in the tangential direction a of the workpiece 1 is machine-controlled so that it is always positioned perpendicular to the generating curved surface 3 at the point where the workpiece 1 is machined. , the workpiece 1 moves under machine control to create a predetermined curved surface with respect to the processing point of the processing tool 2 by a movement mechanism of two orthogonal axes, and furthermore, the workpiece 1 rotates in the b direction. By doing so, a rotation target curved surface is created. -However, in the above configuration, in order to suppress errors due to the shape of the processing tool 2, it is necessary to control the processing tool 2 so that it is positioned perpendicular to the generated curved surface 3 of the workpiece 1, and the control content Also, the mechanical structure is complicated, and it is difficult to ensure machining accuracy.
発明の目的
本発明は、上記従来の欠点を解消するものであり、装置
の構成を簡素化するとともに、加工工具の偏摩耗をなく
シ、シたがって加工形状誤差の発３へ７
生を防止した超精密加工を実現するものである。Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and simplifies the configuration of the device and eliminates uneven wear of machining tools, thus preventing the occurrence of machining shape errors. This enables ultra-precision machining.
発明の構成
本発明の曲面創成研磨装置は、回転スピンドルに取り付
けられ、高速回転し、被加工物を所定の曲面に創成加工
する加工工具と、前記回転軸と直交する方向に所定の曲
面断面形状をたどるごとく被加工物、或は、前記加工工
具を運動させ得る直交する２軸の移動機構と、前記曲面
断面形状を被加工物の回転方向に創成し、回転対象の曲
面を加工する為の被加工物回転機構と、前記回転スピン
ドルに取り付けられた加工工具を回転軸方向へ揺動させ
得る揺動機構とをそれぞれ備えており、装置の構成が簡
素化できると共に、加工工具の偏摩耗が解消出来、創成
研磨曲面の品質が向上するという特有の効果を有する。Composition of the Invention The curved surface generation polishing apparatus of the present invention includes a processing tool that is attached to a rotating spindle, rotates at high speed, and generates a predetermined curved surface on a workpiece, and a processing tool that generates a predetermined curved surface cross-sectional shape in a direction orthogonal to the rotation axis. a moving mechanism with orthogonal two axes capable of moving the workpiece or the machining tool according to the direction of rotation; It is equipped with a workpiece rotation mechanism and a swing mechanism that can swing the processing tool attached to the rotating spindle in the direction of the rotation axis, which simplifies the configuration of the device and prevents uneven wear of the processing tool. It has the unique effect of improving the quality of the generated polished curved surface.
実施例の説明
以下、本発明の一実施例について、図面を参照しながら
説明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
第２図人は、本発明の実施例に於ける、被加工物及び加
工工具の動作を示す正面概念図であり、第２図Ｂは、同
側面概念図である。４は回転スピンドルに取り付けられ
、被加工物６の半径方向にＣ方向に回転する粗加工用加
工工具であり、５は同じく粗加工用加工工具である。被
加工物６の半径方向、即ち加工工具４，５の回転軸と直
交する方向ｄ方向に、加工工具４，５或は、被加工物６
が相対的に移動する。被加工物６は、回転対象曲面を得
る為、ｅ方向に回転する。又、加工時加工工具４，６は
、回転スピンドル７の回転軸方向ｆ方向に揺動する。さ
らに、用途、プロセスに応じ粗加工用工具４、粗加工用
工具６を適時、前記同様ｆ方向に移動させ、加工に供す
る。FIG. 2 is a conceptual front view showing the operation of a workpiece and a processing tool in an embodiment of the present invention, and FIG. 2B is a conceptual side view of the same. 4 is a rough machining tool that is attached to a rotating spindle and rotates in the C direction in the radial direction of the workpiece 6; 5 is also a rough machining tool. The processing tools 4 and 5 or the workpiece 6
moves relatively. The workpiece 6 is rotated in the e direction to obtain a rotation target curved surface. Further, during machining, the machining tools 4 and 6 swing in the direction f of the rotation axis of the rotary spindle 7. Furthermore, the rough machining tool 4 and the rough machining tool 6 are moved in the f direction as described above at appropriate times depending on the purpose and process, and are used for machining.
第３図は、本発明の実施例に於ける曲面創成研磨装置を
示す斜視図である。４は静圧空気軸受等の高精度軸受を
用いた回転スピンドル７に取り付けられ３０，００ ｃ
） ｒｐｍ〜１００．ＯＯＯｒｐｍの高速回転するダイ
ヤモンド砥石等の粗加工用工具であり、５は同じく、粗
加工用工具である。８は回転スピンドル７を保持し、ボ
ールネジ等の駆動ネジと駆動モーター９により、加工中
上下方向、ｆ方６ べ−７
向に揺動運動し、さらには加工に供するダイヤモンド砥
石を切り替える為に移動するス、ライドテーブルである
。FIG. 3 is a perspective view showing a curved surface generating polishing apparatus in an embodiment of the present invention. 4 is attached to a rotating spindle 7 using a high-precision bearing such as a hydrostatic air bearing and has a rotation speed of 30,00 c.
) rpm~100. It is a rough machining tool such as a diamond grindstone that rotates at a high speed of 00 rpm, and 5 is a rough machining tool as well. Reference numeral 8 holds a rotating spindle 7, which is driven by a drive screw such as a ball screw and a drive motor 9 to oscillate in the vertical direction and in the f direction during machining, and is also moved to switch the diamond grindstone used for machining. It's a ride table.
６は光学ガラス等の被加工物で、被加工物回転スピンド
ル１ｏに固定されている。１ｏの被加工物回転スピンド
ルは、静圧空気軸受を用いた高精度スピンドルであり、
駆動モータ１１により０．２〜２０ Ｏｒｐｍに回転速
度制御される。１２は前記被加工物回転スピンドル１０
を載せ、これを、加工工具４，５の回転軸に対し、直交
する面内で、所定の非球面断面形状を加工工具４、或は
５の接点を描くごとく動作する直交２軸の高精度スライ
ドテーブルであり、１３．１４は各々の直交２軸を駆動
するＤＣサーボモーターである。さらに、前記直交２軸
の動作方向ｇ、ｈの移動量を検出し、Ｎｏ閉ループ制御
を行なう為のレーザ測長システムが組み込まれており、
１６はレーザー光源であり、１６は干渉系光学システム
である。１７は本体ベースであろうなお、この曲面創成
研磨装置は図示せぬ制御装置によって、前記閉ループ動
作側６ ページ
御も含め制御される。Reference numeral 6 denotes a workpiece such as optical glass, which is fixed to a workpiece rotating spindle 1o. The workpiece rotation spindle of 1o is a high-precision spindle using a hydrostatic air bearing.
The rotational speed is controlled by the drive motor 11 to 0.2 to 20 Orpm. 12 is the workpiece rotation spindle 10
This is a high-precision machine with two orthogonal axes that operates to draw a predetermined aspherical cross-sectional shape in a plane orthogonal to the rotation axis of the processing tools 4 or 5, as if drawing the contact point of the processing tools 4 or 5. It is a slide table, and 13 and 14 are DC servo motors that drive each of the two orthogonal axes. Furthermore, a laser length measurement system for detecting the amount of movement in the operating directions g and h of the two orthogonal axes and performing No closed loop control is incorporated,
16 is a laser light source, and 16 is an interference optical system. Reference numeral 17 indicates a main body base, and this curved surface generation polishing apparatus is controlled by a control device (not shown), including the closed loop operation side 6 page control.
以上のように構成された曲面創成研磨装置について以下
、その動作を説明する。The operation of the curved surface generating polishing apparatus configured as described above will be described below.
まず、所定の曲面を創成研磨を行なうに当たり高速回転
する加工工具４，６の回転運動半径をもとに、被加工物
６を所定の曲面形状に研削加工する如く、被加工物６を
Ｃ方向、ｈ方向に動作させる為に、あらかじめ組み込ま
れたプログラムに従って動作制御データーをコンピュー
ターで演算スる。次に被加工物６を被加工物回転スピン
ドル１゜に固定し、被加工物６の回転速度、加工工具４
゜６の切り込み深さ、曲面形状創成研磨速度、ｆ方向の
揺動量、揺動速度等、加工条件の設定を行ない加工を開
始すると、前記のあらかじめ演算された動作制御データ
ーに基づいて、被加工物６を所定の曲面形状に粗加工す
る様加工工具４及び、被加工物６は動作する。この時、
加工工具４は、偏摩耗を防止する為、駆動モーター９に
よりｆ方向に揺動しながら加工に供される。又、１２の
直交２軸のスライドテーブルの動作は、１５．．１６の
７ｔ・
レーザー測長システムからのｇ方向、ｈ方向のデーター
がフィードバックされ閉ループ制御される。First, when performing generating polishing on a predetermined curved surface, the workpiece 6 is ground in the C direction based on the rotational motion radius of the processing tools 4 and 6 that rotate at high speed. , h directions, the computer calculates motion control data according to a pre-installed program. Next, the workpiece 6 is fixed to the workpiece rotation spindle 1°, and the rotational speed of the workpiece 6 and the processing tool 4 are
When machining conditions are set, such as depth of cut of ゜6, curved surface shape generation polishing speed, amount of oscillation in the f direction, oscillation speed, etc., and machining is started, the workpiece is adjusted based on the previously calculated motion control data. The processing tool 4 and the workpiece 6 operate so as to roughly machine the object 6 into a predetermined curved shape. At this time,
The machining tool 4 is used for machining while being oscillated in the f direction by a drive motor 9 in order to prevent uneven wear. The operation of the 12 orthogonal two-axis slide table is described in 15. ．． 16 of 7t・G direction and h direction data from the laser length measurement system is fed back and closed loop control is performed.
その後、精加工に移るが、この為、砥石回転スピンドル
はｆ方向に所定量移動し、精加工用工具を加工に供し得
る位置に割り出し、この状態で前記同様加工工具５及び
被加工物６は動作する。After that, the process moves to precision machining, but for this purpose, the grindstone rotating spindle moves a predetermined amount in the f direction, and the precision machining tool is indexed to a position where it can be used for machining.In this state, the machining tool 5 and workpiece 6 are Operate.
以上の様に、本実施例によれば、制御要素が簡素化でき
、又、ダイヤモンド砥石の偏摩耗が解消し、創成曲面形
状精度０．１μｍ、面粗さＲａ Ｏ，００４μｍが達成
出来、φ５０程度の非球面ガラスレンズが、約４ｍ１ｎ
程度のタクトタイムで加工可能となる。As described above, according to this embodiment, the control elements can be simplified, the uneven wear of the diamond grinding wheel can be eliminated, and a generated curved surface shape accuracy of 0.1 μm, surface roughness Ra of 0.004 μm, and a diameter of φ50 The aspherical glass lens is about 4m1n.
Processing is possible with a takt time of about 100 yen.
発明の効果
以上のように本発明では、回転加工工具を被加工物に対
して４１１対的に加工工具の回転軸と直交する方向にた
どらせることにより曲面形状を創成する様にした事、又
、加工工具を回転軸方向に揺動し、加工工具先端部の偏
摩耗を解消したことから少ない制御要素で、加工工具の
先端形状の影響を受けず、又、加工工具の回転運動半径
が正確に把握出来る様になり、高精度の曲面形状が確保
されその実用的効果は犬なるものがある。Effects of the Invention As described above, in the present invention, a curved surface shape is created by causing a rotary processing tool to trace the workpiece in a direction perpendicular to the rotation axis of the processing tool, and Since the machining tool is swung in the direction of the rotation axis, eliminating uneven wear on the tip of the machining tool, there are fewer control elements, it is not affected by the shape of the tip of the machining tool, and the radius of rotational motion of the machining tool is accurate. It has become possible to grasp the curved surface shape with high precision, and the practical effects of this are impressive.
第１図は従来の曲面創成装置に於ける被加工物及び加工
工具の動作を示す［企図、第２図Ａは本発明の一実施例
の曲面創成研磨装置に於ける被加工物及び加工工具の動
作を示す正面概念図、第２図Ｂは同側面概念図、第３図
は本発明の一実施例に於ける曲面創成研磨装置の斜視図
である。
１．６・・・・・・被加工物、２，４．５・・・・・・
加工工具、７・・・・・・回転スピンドル、８・・・・
・・スライドテーブル、９．１３．１４・・・・・・Ｄ
Ｃサーボモーター、１ｏ・・・・・・被加工物回転スピ
ンドル、１１・・・・・・駆動モーター、１２・・・・
・・直交２軸スライドテーブル、１６・・・・・・ｖ
−サ−光源、１６・・・・・・干渉系光学システム、１
７・・・・・・本体ベース。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名画
ＩＦＩＩＪ
第２図
（ハ） （Ｂ）第３図FIG. 1 shows the operation of a workpiece and a processing tool in a conventional curved surface generating device [see Figure 2A]. FIG. 2B is a conceptual front view showing the operation of the same, FIG. 3 is a perspective view of a curved surface generating polishing apparatus in an embodiment of the present invention. 1.6...Workpiece, 2,4.5...
Processing tool, 7...Rotating spindle, 8...
...Slide table, 9.13.14...D
C Servo motor, 1o... Workpiece rotation spindle, 11... Drive motor, 12...
...Orthogonal 2-axis slide table, 16...v
-Sar light source, 16...Interference optical system, 1
7...Body base. Name of agent: Patent attorney Toshio Nakao and 1 other artist
IFIIJ Figure 2 (C) (B) Figure 3
Claims (1)
を所定の曲面に創成研磨加工する加工工具と前記回転軸
と直交する方向に所定の曲面断面形状をたどるごとく被
加工物、或は、前記加工工具を運転させ得る、直交する
２軸の移動機構と、前記曲面断面形状を被加工物の回転
方向に創成し回転対象の曲面を加工する為の被加工物回
転機構と前記回転スピンドルに取り付けられた加工工具
を回転軸方向へ揺動させ得る揺動機構とを備えた曲面創
成研磨装置。A processing tool that is attached to a rotating spindle, rotates at high speed, and generates and polishes a workpiece into a predetermined curved surface; a moving mechanism with orthogonal two axes capable of driving a tool; a workpiece rotation mechanism for creating the curved cross-sectional shape in the rotational direction of the workpiece and machining the curved surface to be rotated; and a workpiece rotation mechanism attached to the rotating spindle. A curved surface creation polishing device equipped with a swing mechanism capable of swinging a processed tool in the direction of a rotation axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13034784A JPS618270A (en) | 1984-06-25 | 1984-06-25 | Curved-face polishing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13034784A JPS618270A (en) | 1984-06-25 | 1984-06-25 | Curved-face polishing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS618270A true JPS618270A (en) | 1986-01-14 |
Family
ID=15032215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13034784A Pending JPS618270A (en) | 1984-06-25 | 1984-06-25 | Curved-face polishing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS618270A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63179705A (en) * | 1987-01-21 | 1988-07-23 | 松下電器産業株式会社 | Grinder |
| JPH03111161A (en) * | 1989-09-25 | 1991-05-10 | Olympus Optical Co Ltd | Grinding method |
| US5982404A (en) * | 1995-09-29 | 1999-11-09 | Toshiba Tec Kabushiki Kaisha | Thermal transfer type color printer |
| CN104781042A (en) * | 2012-10-29 | 2015-07-15 | 埃西勒国际通用光学公司 | Method for machining a surface of an optical lens |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4233784A (en) * | 1979-03-12 | 1980-11-18 | Ait Industries, Inc. | Lens edging apparatus |
| JPS57173449A (en) * | 1981-04-16 | 1982-10-25 | Minolta Camera Co Ltd | Method and apparatus for working aspheric surface of lens and the like |
-
1984
- 1984-06-25 JP JP13034784A patent/JPS618270A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4233784A (en) * | 1979-03-12 | 1980-11-18 | Ait Industries, Inc. | Lens edging apparatus |
| JPS57173449A (en) * | 1981-04-16 | 1982-10-25 | Minolta Camera Co Ltd | Method and apparatus for working aspheric surface of lens and the like |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63179705A (en) * | 1987-01-21 | 1988-07-23 | 松下電器産業株式会社 | Grinder |
| JPH03111161A (en) * | 1989-09-25 | 1991-05-10 | Olympus Optical Co Ltd | Grinding method |
| US5982404A (en) * | 1995-09-29 | 1999-11-09 | Toshiba Tec Kabushiki Kaisha | Thermal transfer type color printer |
| CN104781042A (en) * | 2012-10-29 | 2015-07-15 | 埃西勒国际通用光学公司 | Method for machining a surface of an optical lens |
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