JPS58151976A - Manufacture of exterior parts of timepiece - Google Patents

Abstract

PURPOSE:To manufacture well designed exterior parts of a timepiece at low cost, by welding specific exterior parts to another exterior parts under specific welding pressure with a peak welding current. CONSTITUTION:A member 5 for band fitting is provided with two projections which has 0.07-0.4mm.<4> area and 0.05-0.2mm. height and the peak welding current of 700-2,000A is fed under 10-50kg pressure for projection welding, completing a timepiece side. Consequently, the shape of a timepiece middle is simplified, design variations are increased, and the material cost and the number of work stages are decreased to reduce the manufacturing cost.

Description

【発明の詳細な説明】 本発明は、溶接可能な材質の胴に、バンド取付用部材を
プロジェクション溶接した時計側、バンド等の外装部品
の製造方法にかかるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing exterior parts such as a watch side and a band by projection welding a band attachment member to a body made of a weldable material.

最近の時計には、デザイン性に優れた高級品質なものが
強く指向され、時計側材質においても半永久的に傷が付
かず、研摩品質が良好で初期の鏡面光沢や各種仕上げを
維持できる硬質材料が多く使われている。Recently, there is a strong preference for high-quality watches with excellent design, and the material on the watch side is also made of hard materials that are semi-permanently scratch-free, have good polishing quality, and can maintain the initial specular luster and various finishes. is often used.

バンド取付方法においても、バンドを時計側に直接ロー
付は等により接合する方法、又はバネ、ピン等により機
械的に取付ける方法等があるが、これに代わる方法がデ
ザインを高めているために強く要望されている。There are several ways to attach the band, such as joining the band directly to the watch side by brazing, etc., or mechanically attaching it with springs, pins, etc., but the alternative method is stronger because it enhances the design. It is requested.

本発明は上記要求に対し、安価でデザイン性に優れた時
計外装部品の製造方法を提供するものである。The present invention satisfies the above requirements by providing a method for manufacturing watch exterior parts that are inexpensive and have excellent design.

従来、第１図に示す直結風バンド取付構造の時計におい
て、バンド取付部１は時計側２と一体にて加工している
。黄銅、ステンレス鋼等の一般材料での一体加工は、突
出しているバンド取付部１の成形を、プレス成形、切削
、研削等の加工工程にて加工しているが、ステライト等
の硬質材では、プレス成形はできないため、焼結、切削
、研削等の加工方法にて行なわなければならず加工負荷
の増大、加工技術の困難さに伴ない時計側のコストは高
いものになっている。BACKGROUND ART Conventionally, in a watch with a direct-connection wind band attachment structure shown in FIG. 1, the band attachment part 1 is fabricated integrally with the watch side 2. For integral processing with general materials such as brass and stainless steel, the protruding band attachment part 1 is formed using processing processes such as press forming, cutting, and grinding, but with hard materials such as Stellite, Since press molding is not possible, processing methods such as sintering, cutting, and grinding must be used, which increases the processing load and increases the cost of the watch due to the difficulty of processing technology.

一方、デザイン的にバンド取付部上部の小斜面３に研摩
加工等によりデザインを付加する場合を考えても、バン
ド取付部１が突出しているため突部の干渉によって小斜
面３の加工が非常に困難であったり又、不可能であった
りし、デザイン制約が課せられている。On the other hand, even when considering the case where a design is added to the small slope 3 at the top of the band attachment part by polishing, etc., since the band attachment part 1 protrudes, the machining of the small slope 3 is extremely difficult due to the interference of the protrusion. This can be difficult or impossible and imposes design constraints.

本発明は従来方法の欠点を排除し、安価で提供するため
時計外装部品を２部品以上の外装部品に加工し、各部品
を完成俵最終工程にてプロジェクション溶接し時計外装
部品として完成させるものである。時計側においてはバ
ンド取付部のない時計側の加工はデザイン制約も少なく
、加工も単純化されるため、デザインバリエーションが
広く、コスト的にも非常に安価に加工ができる。The present invention eliminates the drawbacks of conventional methods and provides the watch at a low cost by processing a watch exterior part into two or more exterior parts, and by projection welding each part in the final process of making a completed bag, the timepiece exterior part is completed. be. On the watch side, processing on the watch side without a band attachment part has fewer design restrictions and the processing is simplified, so there is a wide range of design variations and the processing can be done at a very low cost.

以下本発明の詳細を実施例に従い説明する。第２図乃至
第４図は本発明の実施例を示し時計側４の材質はＣｏ主
成分のステライトを使用し、焼結成形にて完成時計側に
近い形状を製造した。時計側の内形プロフィール及び巻
真穴等は切削加工にて仕上げ、外形プロフィール、及び
外形の各面仕上げは研削、研摩加工にて完成させた。The details of the present invention will be explained below with reference to Examples. Figures 2 to 4 show examples of the present invention, and the watch side 4 was made of stellite containing Co as its main component, and was manufactured into a shape similar to the finished watch side by sintering. The inner profile and winding stem hole on the watch side were finished by cutting, and the outer profile and each surface of the outer shape was finished by grinding and polishing.

一方第３図に示すバンド取付用部材５は材質５ＵＳ３１
６Ｆ材を用い、プレス加工にて成形し、同時にプロジェ
クション６をも成形した。この時のプロジェクションは
、直径０．４ｗ＊、高さ０．１−の形状を８−間隔に２
箇所設けた。プロジェクション成形後、外形面を研摩加
工により仕上げバンド取付用穴Ｔの加工を施し、バンド
取付用部材５を完成させた。On the other hand, the band attachment member 5 shown in FIG. 3 is made of 5US31 material.
Using 6F material, it was molded by press working, and projection 6 was also molded at the same time. The projection at this time is a shape with a diameter of 0.4w* and a height of 0.1-2 mm spaced at 8-inch intervals.
A place has been set up. After projection molding, the outer surface was polished and a hole T for band attachment was formed to complete the band attachment member 5.

完成された時計側４とバンド取付用部材５とを第４図に
示す如くプロジェクション溶接し時計側として完成した
。この時のプロジェクション溶接は、三相整流式プロジ
ェクション溶接機を用い、溶接加圧力２３Ｋｇ、通電時
間２０　ｐ　５ｅｃｏｎｄ　、溶接ピーク電流値１３０
０Ａにて行なった。The completed watch side 4 and the band attachment member 5 were projection welded as shown in FIG. 4 to complete the watch side. For projection welding at this time, a three-phase rectifier projection welding machine was used, welding pressure was 23 kg, energization time was 20 p5econd, and welding peak current value was 130 kg.
This was done at 0A.

溶接後の外観は時計側４、バンド取付用部材５ともに何
ら損傷はなく、美しく仕上った。After welding, both the watch side 4 and the band attachment member 5 had no damage and were beautifully finished.

さらに溶接部の強度試験をした結果は第１表に示す如く
強固であり、腕時計側として十分使用に耐え得るもので
あった。Furthermore, the strength of the welded part was tested, and as shown in Table 1, it was strong and could be used as a wristwatch.

第１表　バンド取付用部材片側の強度 又、破壊試験後、溶接部のナゲツト直径を測定した結果
を第２表に示す。Table 1 Table 2 shows the strength of one side of the band attachment member and the results of measuring the nugget diameter of the welded part after destructive testing.

時計側とバンド取付用部材のプロジェクション溶接にお
けるプロジェクションの大きさは、形状が円形の場合、
直径０．３〜０・７ｍｍ、面積にして０．０７〜０．４
■２、高さは０．０５〜０．２諺が良く、溶接後のナゲ
ツト面積は１．２〜４６５■２　となる。The size of the projection in projection welding between the watch side and the band mounting member is:
Diameter 0.3~0.7mm, area 0.07~0.4
(2) The height is generally 0.05~0.2, and the nugget area after welding is 1.2~465~2.

直径が０．３５ｍ１以下すなわち、０−０７　ｍ”　に
なる店、ナゲツト面倒が十分得られず強度が不十分であ
り腕時計側とし：て使用に耐えきれない。來プロジェク
ション高さｊが０．０５■未満では、プ中ジェクション
部以外への分流が発生しやすく安定した溶接結果が搏ら
れなかった。If the diameter is less than 0.35 m1, that is, 0-07 m, the projection height is insufficient and the strength is insufficient, making it unusable as a wristwatch.If the projection height is 0.05 If it is less than (2), the flow tends to flow to areas other than the injection part during injection, and stable welding results cannot be obtained.

高さ０．２１を超える大きなプロジェクションになると
、時計側とバンド取付用部材との台面にスキが発生し外
観上好ましくない。又、スキを除去するまで溶接条件の
加圧力、あるいは溶接ピーク電流を上げると、時計側及
びバンド取付用部材の表面に影響が表われ、焼けの発生
及び、フ１クレの発生となって外観が悪くなったりバン
ド期付精度哨も影響してくる。If the projection height exceeds 0.21, a gap will occur between the watch side and the band mounting member, which is unfavorable in terms of appearance. In addition, if the welding pressure or peak welding current is increased until the gap is removed, the surface of the watch side and band mounting member will be affected, causing burns and flakes, which will deteriorate the appearance. The accuracy of the band becomes worse and the accuracy of the band is also affected.

プロジェクションの数は、２箇所が良く、３箇所以上で
、各プロジェクションの高さ精度が悪いと、プロジェク
ションに加わる加圧力が均一にならず、散りの発生等に
より溶接の安定性に欠け、強度も不安定となシやすい。It is better to have two projections, but if there are three or more projections, and the height accuracy of each projection is poor, the pressure applied to the projections will not be uniform, and the welding will lack stability due to splintering, etc., and the strength will decrease. Easily unstable.

従ってプロジェクシヨンの加工精度が高く要求されたり
、溶接条件の管理が厳しくなるため生産上、トラブルの
発生が起りやすく不適格である。Therefore, high projection processing accuracy is required, and control of welding conditions becomes strict, which tends to cause problems in production and is therefore unsuitable.

プロジェクションの形状は円形、だ円形、長方形、正方
形等自由に選択できることは言うまでもない。Needless to say, the shape of the projection can be freely selected such as circular, oval, rectangular, square, etc.

以上の如くバンド取付用部材に面積０．０７〜０．４−
２、高さ０．０５〜０．２■のプロジェクションを２箇
所設け、加工刃１０〜５０Ｋｐ、溶接ピーク電流７００
〜２０００Ａを通電しプロジェクション溶接すると七に
よって時計側を完成することができ、従来方法に比較し
時計側形状が極めて単純化されたため、デザインバリエ
ーションは大巾に広がり、さらに材料費の削減、加工工
数の削減から製造コストが従来の約％に低減化すること
ができた。As mentioned above, the band mounting member has an area of 0.07 to 0.4-
2. Two projections with a height of 0.05 to 0.2 cm are provided, processing blade is 10 to 50 Kp, and welding peak current is 700.
By applying a current of ~2000A and projection welding, the watch side can be completed in 7 seconds. Compared to conventional methods, the watch side shape is extremely simplified, allowing for a wide range of design variations, further reducing material costs and processing man-hours. The manufacturing cost was reduced to approximately % of the conventional cost.

本発明によれば、実施例のほかに、時計側４＠にプロジ
ェクションを成形し、バンド取付用部材５には平面を成
形し、プロジェクション溶接することも可能である。又
、完成の時計側にバンドの先駒を直接溶接することも本
発明で達成でき、デザインの美しさ、及び時計側とバン
ドを連結する各部品の削除から時計側の薄型化、さらに
はコストダウンへと応用範囲は巾広く、非常に有益であ
る。According to the present invention, in addition to the embodiments, it is also possible to form a projection on the watch side 4@, form a flat surface on the band attachment member 5, and perform projection welding. In addition, the present invention can also directly weld the tip of the band to the completed watch side, which improves the beauty of the design, eliminates the parts that connect the watch side and the band, reduces the thickness of the watch side, and further reduces costs. It has a wide range of applications and is very useful.

その他、バンドを構成する２部品以上の部品を接合する
に際し本発明の採用によって可能ならしめることは容易
である。In addition, it is easy to join two or more parts constituting a band by employing the present invention.

本発明の実施例と同じ時計側を製造する際に、時計胴材
質にステンレス鋼を応用し本発明の実施によれば実施例
と同様、デザインパリエーショ７の拡大、プレス金型の
単純化、加工工数の低減化から、安価で高品質な時計を
提供することが可能である。When manufacturing the same watch side as in the embodiment of the present invention, stainless steel is applied to the watch body material, and according to the implementation of the present invention, the design separation 7 is enlarged and the press mold is simplified, as in the embodiment. , it is possible to provide inexpensive, high-quality watches by reducing the number of processing steps.

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

第１図は従来の直結風バンド取付構造の側面図、第２図
乃至第４図は本発明の実施例を示し、第２図は時計側の
断面図、第３図はバンド取付用部材の側面図、第４図は
時計側と・バンド取付用部材のブロジエク゛ジョン溶接
概念図である。 １・・・・・・バンド堰何部　　２・・・・・・時計側
３・・・・・・小斜面　　４・・・・・・時計側５・・
・・・・バンド取付用部材 ６・・・・・・プロジェクション ７・・・・・・バンド取付用穴 〆一′ １、事件の表示 昭和５７年特許願第３２５７５号 ２、発明の名称 時計外暮部品の＊造方広 ３、補正をする者 事件との関係　特許出願人 電話（東京）３４２−１２３１ 自　　　　発 ５、補正により増加する発明の数 ６、補正の対象 明細書の「発明の詳細な説明」の欄 ７、補正の内容 明細書第４頁第１０行目 ｒ２０μ５ｅｃｏｎａ」とあるを「２０　ｍ　ｓθＣｏ
ｎｄ」と補正する。Fig. 1 is a side view of a conventional direct-coupling wind band mounting structure, Figs. 2 to 4 show embodiments of the present invention, Fig. 2 is a sectional view of the watch side, and Fig. 3 is a side view of a band mounting member. The side view, FIG. 4, is a conceptual diagram of the bridge extraction welding of the watch side and the band attachment member. 1...What part of the band weir 2...Clock side 3...Small slope 4...Clock side 5...
...Band mounting member 6...Projection 7...Band mounting hole 1' 1. Indication of the incident 1982 Patent Application No. 32575 2. Name of the invention Outside the clock 3. Relationship with the case of the person making the amendment Patent applicant telephone (Tokyo) 342-1231 Vol. 5. Number of inventions increased by the amendment 6. Details of the invention in the specification to be amended Column 7 of "Explanation", page 4, line 10 of the statement of contents of the amendment, "r20μ5econa" should be replaced with "20 m sθCo
nd”.

Claims (1)

【特許請求の範囲】[Claims] 面積０．０７〜０．４ｍ”、高さ０．０５〜０．２ｍの
プロジエクショ／を２箇所設けた外装部品を別体の外装
部品に、溶接加圧力１０〜５０−１溶接ピーク電流７０
０〜２０００Ａを通電しプロジェクション溶接した時計
外装部品の製造方法。An exterior part with two projectors with an area of 0.07 to 0.4 m" and a height of 0.05 to 0.2 m is made into a separate exterior part, welding pressure of 10 to 50-1, welding peak current of 70
A method of manufacturing a watch exterior part by applying a current of 0 to 2000 A and projection welding.