JPH0331926B2 - - Google Patents
Info
- Publication number
- JPH0331926B2 JPH0331926B2 JP3557686A JP3557686A JPH0331926B2 JP H0331926 B2 JPH0331926 B2 JP H0331926B2 JP 3557686 A JP3557686 A JP 3557686A JP 3557686 A JP3557686 A JP 3557686A JP H0331926 B2 JPH0331926 B2 JP H0331926B2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- nut
- annular protrusion
- nut body
- thread
- 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
Links
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000003754 machining Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Refrigerator Housings (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、袋ナツト、特にナツト本体の頂部に
キヤツプ体を溶接したツーピースタイプの袋ナツ
トの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a cap nut, particularly a two-piece type cap nut in which a cap body is welded to the top of a nut body.
従来の技術
従来、上記ツーピースタイプの袋ナツトは、第
２図に示すように、標準六角ナツト１の頂部２に
半球状のキヤツプ体４を溶接したものが最も一般
的である。BACKGROUND ART Conventionally, the most common two-piece type cap nut is one in which a hemispherical cap member 4 is welded to the top 2 of a standard hexagonal nut 1, as shown in FIG.
発明が解決しようとする問題点
しかし、従来の製造方法では、第２図ａに仮想
線で示すように、ナツト１の頂部２に載置するキ
ヤツプ体４が、ナツト１の軸芯に対して位置ずれ
を起し、製品不良を生じ易い欠点があつた。Problems to be Solved by the Invention However, in the conventional manufacturing method, as shown by the imaginary line in FIG. 2a, the cap body 4 placed on the top 2 of the nut 1 is It had the disadvantage of causing misalignment and easily resulting in product defects.
また、第２図ｂに示すように、電極６，７間に
挟持して溶接５する際に、飛散する溶接チツプが
雌ねじ３の谷部に噛み込んでねじ精度を低下させ
るという問題があつた。 Furthermore, as shown in FIG. 2b, when welding 5 while holding the weld between the electrodes 6 and 7, there was a problem in that flying welding chips got caught in the troughs of the female thread 3, reducing thread accuracy. .
本発明は、上記の問題点を解決すると共に、ゆ
るみ止め機能を具備した袋ナツトを得ることを目
的としてなされたものである。 The present invention has been made to solve the above-mentioned problems and to provide a cap nut having a locking function.
問題点を解決するための手段
以下、本発明方法を実施例に対応する第１図に
基づいて説明する。Means for Solving the Problems The method of the present invention will be explained below based on FIG. 1, which corresponds to an embodiment.
第１図ａないしｄは本発明方法による製造工程
を示しており、まず、ナツト本体１１を製作する
際に、その頂部１２にねじ下孔１３と同心状でか
つ同一の内径を持つた環状突出部１４を連設す
る。 1A to 1D show the manufacturing process according to the method of the present invention. First, when manufacturing the nut body 11, an annular protrusion is formed on the top 12 of the nut body 12, which is concentric with the screw hole 13 and has the same inner diameter. The section 14 is installed in series.
次に、ねじ下孔１３に雌ねじ１５を切削加工す
る。この雌ねじ１５は環状突出部１４の内側にま
で設ける。 Next, a female thread 15 is cut into the pre-threaded hole 13. This female thread 15 is provided even inside the annular protrusion 14 .
続いて、第１図ｃのように環状突出部１４を軸
心側へかしめてその内側のねじ山１５ａを内方へ
変形させると共に、外周面を円錐台形状の傾斜面
１６に形成する。この環状突出部１４に半球状の
キヤツプ体１７を被嵌すると、傾斜面１６が案内
面となつて、ナツト本体１１とキヤツプ体１７の
軸心が自動的に同心状態になり、両者の軸心間に
位置ずれを生じることがない。 Subsequently, as shown in FIG. 1c, the annular protrusion 14 is caulked toward the axis to deform the inner thread 15a inward, and the outer circumferential surface is formed into a truncated conical inclined surface 16. When the hemispherical cap body 17 is fitted onto the annular protrusion 14, the inclined surface 16 becomes a guide surface, and the axes of the nut body 11 and the cap body 17 automatically become concentric, and the axes of both No positional deviation occurs between the two.
上記のようにナツト本体１１に組み付けられた
キヤツプ体１７は公知の溶接装置によつて頂部１
２に溶接１８されるが、この溶接工程において飛
散する溶接チツプは環状突出部１４に遮られて雌
ねじ１５の谷部に侵入することはない。 The cap body 17 assembled to the nut body 11 as described above is attached to the top 1 by a known welding device.
2 is welded 18, but the welding chips scattered during this welding process are blocked by the annular protrusion 14 and do not enter the trough of the female thread 15.
また、このようにして得られた袋ナツトは、環
状突出部１５の内側のねじ山１５ａが内方へ変形
され、ゆるみ止め機能を備えている。このこと
は、ねじ軸の最先端部分にしか使用できず、ゆる
みが生じ易い袋ナツトにとつては極めて有効であ
る。 Furthermore, the cap nut thus obtained has a thread 15a inside the annular protrusion 15 deformed inward, and has a locking function. This is extremely effective for cap nuts, which can only be used at the leading end of the screw shaft and tend to loosen.
発明の効果
上述のように、本発明方法によれば、ナツト本
体の頂部に連設した環状突出部外周の円錐台形状
傾斜面による自動調芯作用でナツト本体に対して
キヤツプ体が自動的に同心状に組み付けられると
共に、溶接工程で飛散する溶接チツプが雌ねじ内
に侵入するのを確実に防止できる。しかも完成さ
れた袋ナツトはゆるみ止め機能を備えている。Effects of the Invention As described above, according to the method of the present invention, the cap body is automatically aligned with the nut body due to the self-aligning action of the truncated conical inclined surface on the outer periphery of the annular protrusion connected to the top of the nut body. In addition to being assembled concentrically, it is possible to reliably prevent welding chips scattered during the welding process from entering the internal thread. What's more, the completed bag nut has a locking function.
したがつて、ゆるみ止め機能を備え、かつ品質
の高い袋ナツトを安価に量産することができる。 Therefore, it is possible to mass-produce high-quality bag nuts with a locking function at a low cost.
第１図は本発明方法による製造工程の説明図、
第２図は従来方法による製造工程の説明図であ
る。
１１……ナツト本体、１２……頂部、１３……
ねじ下孔、１４……環状突出部、１５……雌ね
じ、１６……円錐台形状傾斜面、１７……キヤツ
プ体、１８……溶接。
FIG. 1 is an explanatory diagram of the manufacturing process according to the method of the present invention,
FIG. 2 is an explanatory diagram of a manufacturing process according to a conventional method. 11...nut body, 12...top, 13...
Threaded hole, 14... annular protrusion, 15... female thread, 16... truncated conical inclined surface, 17... cap body, 18... welding.
Claims (1)
内径を持つた環状突出部を連設し、前記ねじ下孔
に雌ねじを加工したのち、前記環状突出部を軸芯
側へかしめて内側のねじ山を変形させると共に、
外周面を円錐台形状の傾斜面に形成し、 該環状突出部にキヤツプ体を被嵌してナツト本
体の頂部に溶接することを特徴とする袋ナツトの
製造方法。[Scope of Claims] 1. An annular protrusion that is concentric with the screw hole and has the same inner diameter is provided on the top of the nut body, and after machining a female thread in the screw hole, the annular protrusion is aligned with the axis. Crimp it to the side to deform the inner thread, and
A method for manufacturing a cap nut, characterized in that the outer circumferential surface is formed into a truncated conical inclined surface, a cap is fitted onto the annular protrusion, and the cap is welded to the top of the nut body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3557686A JPS62194016A (en) | 1986-02-20 | 1986-02-20 | Manufacture of box nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3557686A JPS62194016A (en) | 1986-02-20 | 1986-02-20 | Manufacture of box nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62194016A JPS62194016A (en) | 1987-08-26 |
| JPH0331926B2 true JPH0331926B2 (en) | 1991-05-09 |
Family
ID=12445589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3557686A Granted JPS62194016A (en) | 1986-02-20 | 1986-02-20 | Manufacture of box nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62194016A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0799168B2 (en) * | 1989-01-24 | 1995-10-25 | 株式会社フセラシ | Cap nut |
| CA2168417A1 (en) * | 1995-02-01 | 1996-08-02 | James Roy Butler | Process for dehydrogenation of ethylbenzene to styrene |
-
1986
- 1986-02-20 JP JP3557686A patent/JPS62194016A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62194016A (en) | 1987-08-26 |
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