JPS625304B2 - - Google Patents

Info

Publication number
JPS625304B2
JPS625304B2 JP5446179A JP5446179A JPS625304B2 JP S625304 B2 JPS625304 B2 JP S625304B2 JP 5446179 A JP5446179 A JP 5446179A JP 5446179 A JP5446179 A JP 5446179A JP S625304 B2 JPS625304 B2 JP S625304B2
Authority
JP
Japan
Prior art keywords
hakama
metal
electroformed
needle
hands
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
Application number
JP5446179A
Other languages
Japanese (ja)
Other versions
JPS55146074A (en
Inventor
Toshio Imai
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP5446179A priority Critical patent/JPS55146074A/en
Publication of JPS55146074A publication Critical patent/JPS55146074A/en
Publication of JPS625304B2 publication Critical patent/JPS625304B2/ja
Granted legal-status Critical Current

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  • Adornments (AREA)
  • Electroplating Methods And Accessories (AREA)

Description

【発明の詳細な説明】 本発明は電鋳技術を応用して成形した時計用針
の製造方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing watch hands formed by applying electroforming technology.

従来よりアナログ表示式時計における時刻表示
部材としては一般に針が用いられており、材質的
には、黄銅、リン青銅等の銅合金をはじめ、アル
ミニウム合金等が多用されている。又その加工方
法としては一般に第1図1の如くプレス抜きで所
定の外形抜きおよび穴抜きを施し、しかる後2の
如く袴部の折り曲げ加工を施した150μ〜200μの
厚みの針が主流をしめていた。
Conventionally, hands have been generally used as time display members in analog display type watches, and materials such as copper alloys such as brass and phosphor bronze, and aluminum alloys are often used. In addition, the most common processing method is to use a needle with a thickness of 150μ to 200μ, in which the predetermined outline and holes are punched out using a press as shown in Figure 1, and then the hakama part is bent as shown in Figure 1. there was.

然るに最近は、消費者の時計に対する要求が、
より薄型、小型化の方向に強まり、時計用針にも
その影響が強く出てきた。そのため時計用針もよ
り強くて薄いものが希求され、更には、時、分、
秒を表示する3種類の針の間隔、あるいは文字板
と針との間隔を0もしくは極めて薄くする事が必
要となつた。
However, recently, consumers' demands for watches have increased.
There has been a strong trend toward thinner and more compact designs, and this has also had a strong influence on watch hands. For this reason, stronger and thinner watch hands are desired, and in addition, hour, minute,
It became necessary to reduce the spacing between the three types of hands that displayed seconds, or the spacing between the dial and the hands, to zero or extremely thin.

しかし、従来の様な加工方法あるいは材料を用
いていたのでは、到底これらの要求を満足する事
は出来なかつた。
However, using conventional processing methods or materials, it has not been possible to satisfy these requirements.

本発明はこれらの問題点を解決するもので針お
よび針の袴部を電鋳技術を応用して一体成形せし
める事により極めて薄く、かつ強度のある針を作
成する事に成功したものである。
The present invention solves these problems and has succeeded in producing an extremely thin and strong needle by integrally molding the needle and the hakama part of the needle by applying electroforming technology.

本発明による袴付き時計針の詳細を図面によつ
て説明すれば代表的な製法としては第2図の1−
a,1−b,1−cがある。第2図について説明
すると、フラツトな母型1の表面に目的とする取
付穴2aと針外形2bを有する指針本体を残すよ
うなパターンにマスキング3を施し(第2図−1
−a)、しかる後任意の金属塩溶液を用いて数μ
mから数10μmの所要の厚さに金属を析出せしめ
る。次にこの電鋳層(針2)の取付穴2aの外周
部のみに袴部2′を残すようなパターンにマスキ
ング3′を施し(第2図−1−b)、再度所要の袴
厚さに異種の金属を析出せしめ(第2図−1−
c)た後、この電鋳層(針2)を母型1よりはく
離すると、袴付きの時計針2が得られる。この方
法は母型の表面状態が、そのまま針の表面状態と
なつて現われるため、鏡面針よりは、任意の模様
を有する針を加工するのに有効である。
The details of the clock hands with hakama according to the present invention will be explained with reference to the drawings.A typical manufacturing method is 1-1 in Fig. 2.
There are a, 1-b, and 1-c. To explain Fig. 2, masking 3 is applied to the surface of the flat mother die 1 in a pattern that leaves the pointer body having the intended attachment hole 2a and needle outer shape 2b (Fig. 2-1).
-a), then several μ using any metal salt solution
The metal is deposited to a required thickness ranging from m to several tens of μm. Next, masking 3' is applied in a pattern that leaves the hakama part 2' only on the outer periphery of the attachment hole 2a of this electroformed layer (needle 2) (Fig. 2-1-b), and the desired hakama thickness is again applied. (Fig. 2-1-
c) After this, when this electroformed layer (hand 2) is peeled off from the matrix 1, a clock hand 2 with a hakama is obtained. In this method, the surface condition of the matrix directly appears as the surface condition of the needle, so it is more effective in processing needles with arbitrary patterns than mirror-finished needles.

なお、第2図に示すような方法においては、指
針本体の電着(b参照)とはかまの電着(c参
照)とを別工程とするため、指針本体とはかま部
の材質を異ならせることができる。例えば、指針
本体をニツケル材とし、はかま部を黄銅材とする
と、はかま部が黄銅材のために指針本体の強度が
大きく、硬いにもかかわらず、回転軸への取り付
けが従来通り容易となる。
In addition, in the method shown in Fig. 2, the electrodeposition of the pointer body (see b) and the electrodeposition of the hook (see c) are separate processes, so the materials of the pointer body and the hook are made of different materials. I can do it. For example, if the pointer body is made of nickel and the hook is made of brass, the pointer body has great strength because the hook is made of brass, and although it is hard, it can be easily attached to the rotating shaft as before.

以上本発明による電鋳針の製法について述べた
が電鋳のプロセスについて更に詳述すると、先ず
第一段階として用いる母型(マスター)の材質に
ついては、耐久型母型(アルミニウム、ステンレ
ス鋼、黄銅、ガラス、ニツケルetc)と消耗型母
型(低溶融合金、プラスチツク、ワツクス、石コ
ウ、粘度等)が考えられいずれを用いても製作は
可能であるが、より精密でしかも経済的に行なう
ためには、耐久型母型の中の黄銅が適当である。
The method for manufacturing electroformed needles according to the present invention has been described above, but to explain the electroforming process in more detail, first, the material of the master mold used in the first step is a durable master mold (aluminum, stainless steel, brass, etc.). , glass, nickel, etc.) and consumable molds (low-melting alloys, plastics, wax, plaster, viscosity, etc.), and it is possible to manufacture using either of them, but in order to do it more precisely and economically. Brass, which is a durable matrix, is suitable for this.

第二段階として該母型材に機械加工あるいはエ
ツチング等の化学処理を施し、所定の形状出しを
し、しかる後ペイント、ラツカー、ワツクス等を
塗布、浸せきにより、あるいは酸化物、硫化物を
化学処理により被覆形成せしめ、電着金属を母型
からはく離し易くする。
In the second step, the matrix material is machined or chemically treated such as etching to form the desired shape, and then paint, lacquer, wax, etc. is applied or immersed, or oxides and sulfides are chemically treated. Forms a coating and makes it easier to peel off the electrodeposited metal from the matrix.

次に第三段階の電着作業に用いる電鋳浴につい
て述べると、各種銅、ニツケル、鉄電鋳をはじ
め、高級品には各種貴金属電鋳との組合わせもし
くは単体を用いる事も可能であるが、強度、コス
ト等から一般的にはニツケル電鋳が有効である。
Next, regarding the electroforming bath used in the third stage of electrodeposition work, it can be used for various types of copper, nickel, and iron electroforming, and for high-end products, it can be used alone or in combination with various noble metal electroforming baths. However, nickel electroforming is generally effective in terms of strength, cost, etc.

次に本発明の特徴を列挙すると、 (1) 電解条件、浴組成、添加剤等を変える事によ
り広範囲の物理的特性を持つた針を容易に得る
事が出来る。例えばニツケル電鋳を用いたもの
はHVで500〜650の硬さを有し、5〜40μm程
度の厚さでも充分使用に耐える強度を有し、従
来の針150〜200μmの約1/40と極めて薄い針を
得る事が出来る。これにより針同志の隙間が0
もしくは数μと極めて僅かで針同志が接触して
も従来と同じトルクで運針には何等影響なく、
スムーズに駆動する。
Next, the features of the present invention are listed: (1) Needles with a wide range of physical properties can be easily obtained by changing electrolytic conditions, bath composition, additives, etc. For example, those using nickel electroforming have a hardness of HV 500 to 650, and are strong enough to withstand use even with a thickness of about 5 to 40 μm, and are about 1/40th of the thickness of conventional needles of 150 to 200 μm. You can get extremely thin needles. This ensures that the gap between the needles is 0.
Or, even if the hands touch each other by a very small amount of a few microns, the torque is the same as before, and there is no effect on the movement of the hands.
Drive smoothly.

(2) 表面状態を正確に複製出来るため、装飾的効
果の高い針をデザイナーの希望に応じて得る事
が出来る。
(2) Since the surface condition can be accurately reproduced, needles with high decorative effects can be obtained according to the designer's wishes.

(3) 寸法精度が高いため、袴付き時計針の一体成
形品でも、筒車や各車軸との嵌合は問題ない。
(3) Due to the high dimensional accuracy, there is no problem fitting the hour wheel or each axle even if the clock hands with hakama are integrally molded.

(4) 大がかりな装置を必要としないため、時計の
如く多種少量生産に好適である。
(4) Since it does not require large-scale equipment, it is suitable for producing a wide variety of products in small quantities, such as watches.

(5) 時計用針に使用する限り大きさ、形状に制限
される事なく時計に適合した針を容易に得る事
が出来る。
(5) As long as it is used for watch hands, it is possible to easily obtain hands that fit the watch without any restrictions on size or shape.

(6) 指針本体と袴部を異種の金属で成形すること
により、指針本体の強度を大きく硬く、袴部を
軟かこすることができ回転軸に取付けやすくま
た薄いにもかかわらず強度のある時計用針が得
られ薄型化、小型化に大きな効果を有するもの
である。
(6) By molding the pointer body and the hakama part from different metals, the strength of the pointer body can be increased and hardened, and the hakama part can be made soft, making it easy to attach to the rotating shaft and creating a watch that is strong despite being thin. This has a great effect on making the needle thinner and smaller.

以上本発明における代表的製法および特徴、効
果について述べたが、電鋳技術を応用して加工し
た針であれば、その製法、使用の何如を問わず、
いずれも本発明の目的を逸脱するものではない。
The typical manufacturing method, features, and effects of the present invention have been described above, but as long as the needle is processed by applying electroforming technology, regardless of the manufacturing method or how it is used,
None of these depart from the purpose of the present invention.

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

第1図は従来の時計用針の製法の一例を示す断
面図、第2図は本発明による時計用針の代表的製
法を示す断面図であり、1はその一例で1−a,
1−b,1−cは各工程を示すものである。 1……母型、2……針、2′……袴部、3……
一次マスキング、3′……二次マスキング。
Fig. 1 is a cross-sectional view showing an example of a conventional method for manufacturing a watch hand, and Fig. 2 is a cross-sectional view showing a typical method for manufacturing a watch hand according to the present invention.
1-b and 1-c indicate each step. 1... Matrix, 2... Needle, 2'... Hakama part, 3...
Primary masking, 3'...secondary masking.

Claims (1)

【特許請求の範囲】[Claims] 1 電鋳技術を用いて行なう時計用針の製造方法
において、フラツトな母型の表面に目的とする取
付穴と針外形を有する指針本体を残すようなパタ
ーンにマスキングを施す工程と、該マスキングさ
れた母型の表面に金属の電鋳層を形成させる工程
と、該金属の電鋳層の取付穴外周部のみに袴部を
残すようなパターンにマスキングを施す工程と、
前記袴部に前記指針本体の金属と異なる金属の電
鋳層を形成させる工程とよりなり、前記袴付きの
金属電鋳層を前記母型よりはく離して成形させた
ことを特徴とする時計用針の製造方法。
1. In a method for manufacturing watch hands using electroforming technology, there is a step of masking the surface of a flat matrix in a pattern that leaves a pointer body with the desired mounting hole and the outer shape of the needle; a step of forming an electroformed metal layer on the surface of the mother mold; a step of masking the electroformed metal layer in a pattern such that a hakama portion is left only on the outer periphery of the attachment hole;
A watch comprising the step of forming an electroformed layer of a metal different from the metal of the pointer body on the hakama portion, the metal electroformed layer with the hakama being peeled off from the mother mold and molded. How to make needles.
JP5446179A 1979-05-02 1979-05-02 Hand for watch Granted JPS55146074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5446179A JPS55146074A (en) 1979-05-02 1979-05-02 Hand for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5446179A JPS55146074A (en) 1979-05-02 1979-05-02 Hand for watch

Publications (2)

Publication Number Publication Date
JPS55146074A JPS55146074A (en) 1980-11-14
JPS625304B2 true JPS625304B2 (en) 1987-02-04

Family

ID=12971304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5446179A Granted JPS55146074A (en) 1979-05-02 1979-05-02 Hand for watch

Country Status (1)

Country Link
JP (1) JPS55146074A (en)

Also Published As

Publication number Publication date
JPS55146074A (en) 1980-11-14

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