JPH0773557B2 - Mirror manufacturing method - Google Patents
Mirror manufacturing methodInfo
- Publication number
- JPH0773557B2 JPH0773557B2 JP1262655A JP26265589A JPH0773557B2 JP H0773557 B2 JPH0773557 B2 JP H0773557B2 JP 1262655 A JP1262655 A JP 1262655A JP 26265589 A JP26265589 A JP 26265589A JP H0773557 B2 JPH0773557 B2 JP H0773557B2
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- latent image
- blank
- groove
- metal plate
- 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 - Fee Related
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Optical Elements Other Than Lenses (AREA)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明は鏡面の一部に凹面鏡を構成する微細溝によって
文字、図柄、模様、絵等の形象（これを潜在形象とい
う）を潜在的に形成しておき、鏡面からの反射光の投射
面に前記潜在形象を結像させるようにした鏡の製造方法
に関するものである。Description: TECHNICAL FIELD The present invention potentially forms a figure (such as a latent figure) such as a character, a pattern, a pattern, or a picture by means of fine grooves forming a concave mirror in a part of a mirror surface. In addition, the present invention relates to a method of manufacturing a mirror in which the latent image is formed on a projection surface of reflected light from the mirror surface.
［従来技術］ この種の鏡は巷間で「魔鏡」と呼ばれている。「魔鏡」
の鏡面は巨視的には普通の鏡と変りがなく、普通の鏡と
して使用できるが、その反射光を鏡面から所定距離（鏡
面の形象を形成する溝の凹面鏡の焦点距離）にある平面
に投射すると、鏡面の反射光による像内に鏡面の潜在形
象が他の部分より明るい像として現われるようにしたも
のである。[Prior Art] This kind of mirror is called "Magic" in the public. "Magic"
Macroscopically, the mirror surface is macroscopically similar to an ordinary mirror and can be used as an ordinary mirror, but the reflected light is projected onto a plane at a certain distance from the mirror surface (focal length of the concave mirror of the groove that forms the mirror image). Then, the latent image of the mirror surface appears as a brighter image than other parts in the image due to the reflected light of the mirror surface.
「魔鏡」の公知の製造方法は、第４図、第５図に示すよ
うに、金属板１の裏面に潜在形象Ｈに対応する形状の金
属製の固い裏打ち部材２を固着し、この金属板を裏打ち
部材２を下にして基台３上に載置し、金属板の表面を特
殊な切削工具４で丹念に切削研磨することにより金属板
の表面に潜在形象Ｈを形成し、この表面を鏡面に仕上げ
る方法である。As shown in FIGS. 4 and 5, a known method of manufacturing a “magic mirror” is to fix a metal hard backing member 2 having a shape corresponding to the latent image H to the back surface of the metal plate 1, The plate is placed on the base 3 with the backing member 2 facing down, and the surface of the metal plate is carefully cut and polished by a special cutting tool 4 to form a latent image H on the surface of the metal plate. Is a method of finishing the mirror surface.
潜在形象は見た目には鏡面中ではほとんど識別できない
が、上記方法によって金属板表面（鏡面）に潜在形象が
形成される理由は、裏打ち部材２に対応する金属板１の
表面部分Ａは裏打ち部材のない表面部分Ｂよりも抵抗が
大きく、従って切削研磨によって部分Ａが部分Ｂよりも
多く摩耗して部分Ａに凹面（円筒状凹面）の溝５が形成
されるからであると考えられている。Although the latent image is virtually unrecognizable on the mirror surface, the reason why the latent image is formed on the metal plate surface (mirror surface) by the above method is that the surface portion A of the metal plate 1 corresponding to the backing member 2 is the backing member. It is considered that the resistance is higher than that of the non-surface portion B, and therefore the portion A is worn more than the portion B by cutting and polishing, and the concave groove 5 (cylindrical concave surface) is formed in the portion A.
このような円筒状凹面の溝によって形成された潜在形象
を含む金属板全面を鏡面となし、これに光を当てれば、
円筒状凹面鏡をなす溝５の部分がその焦点面に潜在形象
を他の鏡面部分の像よりも明るい像として結像させる。If the entire surface of the metal plate including the latent image formed by the groove of such a cylindrical concave surface is made into a mirror surface and light is applied to this,
The portion of the groove 5 forming the cylindrical concave mirror forms a latent image on its focal plane as a brighter image than the images of other mirror surface portions.
［発明が解決しようとする問題点］ 上記従来の製造方法は製作者の専ら経験と勘に依存した
手作業で、製作技術の習得に長い年月と修練を要し、ま
た、熟練者（現在日本で唯一人）にのみ製作可能で、し
かも製作に時間と手間がかかり、大量生産が不可能であ
り、製品の品質にばらつきがあり、また、複雑な潜在形
象を形成するのが極めて困難であるといった問題があ
る。[Problems to be Solved by the Invention] The above-described conventional manufacturing method is a manual work that depends on the experience and intuition of the manufacturer, and requires a long time and training to master the manufacturing technique. Only one person in Japan can make it, and it takes time and effort to make it, mass production is not possible, the quality of the product is uneven, and it is extremely difficult to form a complicated latent image. There is such a problem.
［問題点を解決するための手段および作用］ 本発明は以上の問題点をことごとく解決した「魔鏡」の
製造方法を提供したものである。[Means and Actions for Solving Problems] The present invention provides a method for manufacturing a "magic mirror" that solves all the above problems.
本発明方法は、鏡の素材たる金属板（以下ブランク）の
表面（鏡面となる面）に形成されるべき潜在形象に対応
する平面図形状の刃を有する刻印によって前記ブランク
の裏面（前記鏡面となる面の反対側の面）に前記潜在形
象の楔溝を刻印することによって、この刻印楔溝に対応
する前記ブランクの表面部分に凹面鏡を構成する微細な
凹溝によって潜在形象を形成した後、この凹溝による潜
在形象を含む前記ブランクの前記表面を鏡面に形成する
ことを特徴とするものである。The method of the present invention is the back surface of the blank (the mirror surface and the mirror surface) that is stamped with a blade having a plan view shape corresponding to the latent image to be formed on the surface (surface that becomes the mirror surface) of the metal plate (blank) that is the material of the mirror After forming a latent image by fine groove forming a concave mirror on the surface portion of the blank corresponding to the engraved wedge groove, by engraving a wedge groove of the latent image on the surface opposite to the surface). The surface of the blank including the latent image formed by the groove is formed into a mirror surface.
第１図は本発明の方法を略示したもので、10は油圧プレ
スの基台、11は油圧プレスの可動ヘッド、12は可動ヘッ
ドに固定された刻印、13は刻印の刃、14は基台10上に設
置された金属製ブロック、15はブランク（鏡の素材たる
金属板）で、鏡面となるべき表面が下向きにブロック14
の上面に接して載置される。FIG. 1 schematically shows the method of the present invention. 10 is a base of a hydraulic press, 11 is a movable head of the hydraulic press, 12 is a marking fixed to the movable head, 13 is a marking blade, and 14 is a base. A metal block installed on the table 10, 15 is a blank (metal plate that is the material of the mirror), and the surface that should become the mirror surface is a block facing downward 14
Is placed in contact with the upper surface of.
油圧プレスは直角度0.005以内および平衡度0.005以内の
精度のものをが望ましい。油圧プレスの基台10上に設置
される金属製ブロック14は200×100×60mmの寸法で、６
面平衡度0.005以内で鏡面に磨いた上面を有する。It is desirable that the hydraulic press has a squareness within 0.005 and a balance within 0.005. The metal block 14 installed on the base 10 of the hydraulic press has a size of 200 × 100 × 60 mm.
It has a mirror-polished top surface with a surface equilibrium within 0.005.
ブランク15の材質は、真鋳、ステンレススチール、銅、
鉄、アルミニウム、銀、金、これらの合金など適当なも
のを選択でき、その寸法も自由であるが普通30φ〜100
φ程度であり、その厚さは0.6mm〜2mmである。もちろん
この範囲に限定されない。The material of the blank 15 is brass, stainless steel, copper,
Iron, aluminum, silver, gold, alloys such as these can be selected appropriately, and their dimensions are also free, but usually 30φ ~ 100
It is about φ and its thickness is 0.6 mm to 2 mm. Of course, it is not limited to this range.
刻印12は例えばSKD製のもので、刻印面の大きさはブラ
ンク15の表面または刻印されるべき形象の占める面積に
応じて選定される。形象を表わす刻印の刃13は、刻印さ
れるべき形象に応じてその刃先角度θは７°〜50°、線
幅は0.2mm〜3mm、刃先高さは0.8mm〜1mmが望ましい範囲
である。The marking 12 is made of SKD, for example, and the size of the marking surface is selected according to the surface of the blank 15 or the area occupied by the figure to be marked. The engraved blade 13 representing the shape has a desirable edge angle θ of 7 ° to 50 °, a line width of 0.2 mm to 3 mm, and a blade height of 0.8 mm to 1 mm depending on the shape to be engraved.
上記範囲の刃を有する刻印のブランクに対する押圧力は
ブランクの材質および寸法によって異なるが、直径30
φ、厚さ1mmのブランクについては次表に示す範囲が好
適である。The pressing force against the blank of the stamp with the blade in the above range depends on the material and size of the blank, but the diameter is 30
The ranges shown in the following table are suitable for φ and 1 mm thick blanks.
表１ 材 質 圧力（kg/cm2） 真鋳 45〜55 ステンレススチール 15〜25 銅 10〜15 鉄 ８〜12 アルミニウム ５〜 7 銀 ３〜 5 金 ２〜 4 ブランクの材質、外径、厚みに応じて刻印圧力を表１を
基準に適宜調整する。Table 1 Material Pressure (kg / cm 2 ) True casting 45 to 55 Stainless steel 15 to 25 Copper 10 to 15 Iron 8 to 12 Aluminum 5 to 7 Silver 3 to 5 Gold 2 to 4 Blank material, outer diameter and thickness Accordingly, the marking pressure is appropriately adjusted based on Table 1.
上記条件に従い刻印によってブランクの裏面（鏡面とな
る表面の反対側の面）（図で上面）に潜在形象に対応す
る平面図形状の（断面）楔（状の）溝を刻印することに
より、ブランクの表面（鏡面となる面）（図で下面）に
おいて裏面の刻印楔溝に対応する部分に円筒状凹面鏡と
なる凹溝による潜在形象が形成される。According to the above conditions, the blank is formed by stamping a (cross-section) wedge-shaped groove in a plan view shape (corresponding to a latent image) on the back surface (the surface opposite to the mirror surface) (upper surface in the figure) of the blank by stamping. On the surface (surface serving as a mirror surface) (the lower surface in the figure) of the above, a latent image is formed by a concave groove serving as a cylindrical concave mirror in a portion corresponding to the marking wedge groove on the rear surface.
その理由は次の通りであると考えられる。The reason is considered to be as follows.
第２図に略図的示すように刻印12の刃13を所定の力Ｆで
ブランク15に押圧すると、ブランクの裏面15aには刃13
によって楔溝16が刻まれるが、楔溝の側面には垂直方向
の力Ｖと水平方向の力Ｈが作用し、これによってブロッ
ク14の上面に接触支持されたブランクは刃13の先端
（縁）から下した垂線（垂直面）を中心にしてブランク
材料が左右に伸ばされ、その結果ブランク表面（下面）
15bに刃の先端縁に沿って円筒状凹面を有する窪み（凹
溝）15cが形成される。When the blade 13 of the stamp 12 is pressed against the blank 15 with a predetermined force F as schematically shown in FIG.
The wedge groove 16 is engraved by the wedge groove, but a vertical force V and a horizontal force H act on the side surface of the wedge groove, whereby the blank contacted and supported on the upper surface of the block 14 has a tip (edge) of the blade 13. The blank material is stretched to the left and right around the vertical line (vertical plane) that descends from it, resulting in a blank surface (bottom surface).
A recess (concave groove) 15c having a cylindrical concave surface is formed in 15b along the tip edge of the blade.
凹溝が形成されたブランク表面は通常の方法によりニッ
ケル、クロム等のメッキを施して鏡面に仕上げる。この
凹溝15cの内面はある半径を有する円筒内周面の一部を
なすものと考えられる。この凹溝の内面を鏡面（円筒状
凹面鏡）に形成すれば、この凹面鏡に当った光は第３図
に示すように焦点Ｐに集光される。従って、鏡面全体の
反射光による像Ｉの内部に上記凹溝によって形成された
潜在形象の明るい像ｉが上記焦点の位置に結ばれること
になる。The blank surface on which the groove is formed is plated with nickel, chromium or the like by a conventional method to be a mirror surface. The inner surface of the groove 15c is considered to be a part of the inner peripheral surface of the cylinder having a certain radius. If the inner surface of the concave groove is formed into a mirror surface (cylindrical concave mirror), the light hitting the concave mirror is focused on the focal point P as shown in FIG. Therefore, the bright image i of the latent image formed by the concave groove is formed inside the image I formed by the reflected light on the entire mirror surface at the focal point position.
なお、図において凹溝15cの大きさ（深さ）、曲率は図
示を明瞭にするため誇張して描いてある。In the figure, the size (depth) and curvature of the concave groove 15c are exaggerated for clarity.
上記刻印と上記表の材質のブランク（30φ、1mm厚）を
用い上記表の圧力より得た凹溝の深さは2/1000〜5/1000
mmで、これにより鏡の表面から100mm〜150mmの距離に反
射光による潜在形象の明るい像を結像させることができ
る。The depth of the groove obtained from the pressure in the above table is 2/1000 to 5/1000 using the stamp and the blank of the material in the above table (30φ, 1mm thickness)
mm, which allows a bright image of the latent image due to reflected light to be imaged at a distance of 100 mm to 150 mm from the mirror surface.
［実施例］ 刃先角度38°、刃の線幅0.2mm、刃先高さ0.8mmを油圧プ
レスにセットし、26φ、1.5mm厚の真鋳製ブランクに対
して圧力45kg/cm2で刻印した。ブランクの刻印面（裏
面）と反対側の面（表面）に形成された潜在形象の凹溝
の深さは5/1000mmであった。ブランクの潜在形象形成面
（表面）を軽く炭研ぎした後、軽くパフ加工を行なって
から、常法により厚さ5/1000mm程度のクロムメッキを施
した。[Example] A blade angle of 38 °, a blade line width of 0.2 mm, and a blade height of 0.8 mm were set in a hydraulic press, and stamping was performed at a pressure of 45 kg / cm 2 on a 26 φ, 1.5 mm thick true cast blank. The depth of the recessed groove of the latent image formed on the surface (front surface) opposite to the stamped surface (back surface) of the blank was 5/1000 mm. The blank image forming surface (surface) of the blank was lightly carbonized, lightly puffed, and then chromium-plated to a thickness of about 5/1000 mm by a conventional method.
得られた鏡の鏡面は見た目には潜在形象をほとんど認め
ることができなかったが、太陽光を反射させたところ鏡
面より約15cm離しておいた白紙面に鏡面の反射像の中に
潜在形象の明るい明確な像を得ることができた。On the mirror surface of the obtained mirror, the latent image could hardly be recognized visually, but when sunlight was reflected, the latent image was reflected in the reflection image of the mirror surface on a white paper surface about 15 cm away from the mirror surface. I could get a bright and clear image.
［発明の効果］ 以上のように本発明の方法は従来のように長い経験と勘
によらずともプレス加工技術者であれば実施が容易であ
り、製作に時間と手間がからず、大量生産が可能であ
り、製品の品質にばらつきがなく、複雑な潜在形象も困
難なく製作可能である。[Effects of the Invention] As described above, the method of the present invention can be easily carried out by a press working engineer without requiring a long experience and intuition as in the past, and it does not take time and effort to manufacture, and mass production is possible. It is possible to produce, there is no variation in product quality, and complex latent images can be produced without difficulty.
第１図は本発明の方法を略示した説明図、 第２図は本発明の原理の説明図、 第３図は本発明により製作された鏡の一部の略示的拡大
断面図 第４図は従来方法の説明図、 第５図は第４図のＶ−Ｖ断面図、 第６図は本発明の鏡による投射の様子を示す斜視図であ
る。 10……基台、11……可動ヘッド、12……刻印、13……刻
印の刃、14……金属製ブロック、15……ブランク。FIG. 1 is an explanatory view schematically showing the method of the present invention, FIG. 2 is an explanatory view of the principle of the present invention, and FIG. 3 is a schematic enlarged sectional view of a part of a mirror manufactured according to the present invention. FIG. 5 is an explanatory view of a conventional method, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a perspective view showing a projection state by a mirror of the present invention. 10 …… base, 11 …… movable head, 12 …… marked, 13 …… marked blade, 14 …… metal block, 15 …… blank.
Claims (1)
き潜在形象に対応する平面図形状の突出刃を有する刻印
によって前記金属板の裏面に前記潜在形象の楔溝を刻印
することによって、この刻印楔溝に対応する前記金属板
の表面部分に円筒状凹面鏡を構成する微細な凹溝によっ
て潜在形象を形成した後、この凹溝による潜在形象を含
む前記金属板の前記表面を鏡面に形成することを特徴と
する鏡の製造方法。1. A wedge groove of the latent image is formed on the back surface of the metal plate by an inscription having a protruding blade in a plan view shape corresponding to the latent image to be formed on the surface of the metal plate which is the material of the mirror. , A latent image is formed on the surface portion of the metal plate corresponding to the engraved wedge groove by a fine groove forming a cylindrical concave mirror, and the surface of the metal plate including the latent image formed by the groove is mirror-finished. A method for manufacturing a mirror, which comprises forming the mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262655A JPH0773557B2 (en) | 1989-10-06 | 1989-10-06 | Mirror manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262655A JPH0773557B2 (en) | 1989-10-06 | 1989-10-06 | Mirror manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03123508A JPH03123508A (en) | 1991-05-27 |
| JPH0773557B2 true JPH0773557B2 (en) | 1995-08-09 |
Family
ID=17378795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1262655A Expired - Fee Related JPH0773557B2 (en) | 1989-10-06 | 1989-10-06 | Mirror manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0773557B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045201A1 (en) * | 2001-11-27 | 2003-06-05 | Yugen Kaisha Sanko Seisakusho | Mirror and method for producing the same |
-
1989
- 1989-10-06 JP JP1262655A patent/JPH0773557B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03123508A (en) | 1991-05-27 |
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