JPH0337404A - Manufacture of locking nut - Google Patents
Manufacture of locking nutInfo
- Publication number
- JPH0337404A JPH0337404A JP17178089A JP17178089A JPH0337404A JP H0337404 A JPH0337404 A JP H0337404A JP 17178089 A JP17178089 A JP 17178089A JP 17178089 A JP17178089 A JP 17178089A JP H0337404 A JPH0337404 A JP H0337404A
- Authority
- JP
- Japan
- Prior art keywords
- screw hole
- nut
- forming
- manufacture
- nut material
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 13
- 238000010924 continuous production Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000001154 acute effect Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Forging (AREA)
- Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ボルト等に螺合した後の緩みを阻止すること
ができる緩み止めナツトの製造方法に係り、特に良好な
緩み止めトルクを得ることができるナツトを比較的容易
に低コストで製造する方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for manufacturing a locking nut that can prevent loosening after being screwed onto a bolt, etc., and particularly provides a good locking torque. The present invention relates to a method for manufacturing nuts with relative ease and at low cost.
（従来の技術）
従来、例えば第３図Ａ乃至りに示すような緩み止めナツ
トの製造方法が知られている。これは、次のような方法
である。即ち、第３図Ａに示すようなナツト素材↓１の
一端側に同図Ｂに示すように円錐形状のテーパ部上２を
形成し、同図Ｃに示すようにテーパ部１２に等間隔の切
込み１３を縦方向に６箇所入れた後、ナツト素材１１の
内周にねじ孔１１ａを形成する。そして、テーパ部１２
を同図りに示すように断面略半円形の凹部Ｄａを備えた
型りにて軸線方向に圧搾して内方にかしめ、テーパ部１
２のねじ孔１２ａを円形に縮小するものである。(Prior Art) Conventionally, a method of manufacturing a locking nut as shown in FIGS. 3A to 3A is known. This method is as follows. That is, as shown in FIG. 3A, a conical tapered portion 2 is formed on one end side of the nut material ↓1 as shown in FIG. After making six cuts 13 in the vertical direction, a screw hole 11a is formed on the inner periphery of the nut material 11. Then, the tapered portion 12
As shown in the figure, the tapered part 1 is compressed in the axial direction and caulked inward using a mold having a recess Da having a substantially semicircular cross section.
The second screw hole 12a is reduced to a circular shape.
（発明が解決しようとする課題）
上記従来の緩み止めナツトの製造方法においては、テー
パ部１２に切込み１３を入れる工程が連続工作のネック
となり、製造に手数を要し、コスト高となるし、ボルト
との端金時に切込み１３の両側の角がボルトの表面に対
して鋭角に接触するために、この部分がボルトのねじ部
を削って切り粉を生じさせ、この切り粉がねじ部に巻き
込まれて焼き付きの原因となり易いという問題があった
。(Problems to be Solved by the Invention) In the conventional method for manufacturing the locking nut described above, the step of making the notch 13 in the tapered portion 12 becomes a bottleneck in continuous machining, and the manufacturing process is labor-intensive and costly. Since the corners on both sides of the notch 13 contact the bolt surface at an acute angle when fitting the bolt, these parts scrape the threaded part of the bolt and generate chips, which get caught up in the threaded part. There was a problem in that it could easily cause burn-in.
本発明は、上記従来の問題点に鑑みてなされたもので、
良好な緩み止め１〜ルクを有するナラ１−を容易に、か
つ安価に得ることを課題とする。The present invention has been made in view of the above-mentioned conventional problems.
It is an object of the present invention to easily and inexpensively obtain a oak 1- having a good locking property 1-lucky.
（課題を解決するための手段）
本発明においては、上記の課題を解決するため、多角形
ナツト素材］−の一端側に円錐形状のテーパ部２を形成
する工程と、ナツト素材１にねじ孔１ａ、２ａを形成す
る工程と、多角錐の凹部を価えた型りにて頭部２を軸線
方向に圧搾してねじ孔２ａを非円形に形成する工程とを
含む方法を採用した。(Means for Solving the Problems) In order to solve the above problems, the present invention includes a step of forming a conical taper portion 2 on one end side of the polygonal nut material 1, and a step of forming a screw hole in the nut material 1. A method was adopted which included a step of forming the screw holes 1a and 2a, and a step of compressing the head 2 in the axial direction using a mold having polygonal pyramidal recesses to form the screw hole 2a in a non-circular shape.
（作 用）
本発明の方法においては、多角形ナラ１〜素材１の一端
側に略円錐形状のテーパ部２を形威し、このナツト素材
１にねじ孔１ａを形成する。次にテーパ部２より小径の
略多角錐の凹部を備えた型りにてテーパ部２を軸線方向
に圧搾し、テーパ部２を略多角錐に形成すると共に、テ
ーパ部のねじ孔２ａを縮小させ非円形にして緩み止めナ
ラ１−を製造する。従って、ナツト素材から緩み止めナ
ラ］への完成まで連続工程が可能となる。こうして製作
されたナツトは、テーパ部２の非円形のねし孔２ａによ
りボルトを締め付けて緩み止めトルクを得る。また、切
込みを設けずに一体成型するため、ねじ孔２ａがポル１
〜に対して鋭角的に接触することがなく焼き付きが防止
され、さらに破損等が発生しにくい。(Function) In the method of the present invention, a substantially conical tapered portion 2 is formed on one end side of the polygonal nut material 1 to the material 1, and a screw hole 1a is formed in the nut material 1. Next, the taper part 2 is compressed in the axial direction using a mold having a substantially polygonal pyramidal recess with a diameter smaller than that of the tapered part 2, forming the tapered part 2 into a substantially polygonal pyramid, and reducing the screw hole 2a of the tapered part. A locking nut 1- is manufactured by making it into a non-circular shape. Therefore, it is possible to perform a continuous process from the nut material to the loosening nut. The thus manufactured nut tightens the bolt through the non-circular threaded hole 2a of the tapered portion 2 to obtain a locking torque. In addition, since it is integrally molded without providing a notch, the screw hole 2a is
There is no sharp angle contact with ~, preventing burn-in, and furthermore, damage is less likely to occur.
（実施例）
第工図、第２図に本発明の実施例を示す。第１図Ａ乃至
Ｃは緩み止めナツトの製造工程を順を追って示す正面図
、及び平面図、第２図は第１図Ｃにおける■−■断面図
である。(Example) An example of the present invention is shown in the construction drawing and FIG. 2. 1A to 1C are a front view and a plan view showing the manufacturing process of the locking nut in order, and FIG. 2 is a sectional view taken along the line 1--2 in FIG. 1C.
この実施例の方法においては、第１図Ａ、Ｂに示すよう
に、先ず６角ナツト素材１の一端側に円錐状のテーパ部
２を形成する。テーパ部２は、例えばナツトフォーマに
よる打ち出しの場合は型により、あるいは切削すること
により形成する。In the method of this embodiment, as shown in FIGS. 1A and 1B, first, a conical taper portion 2 is formed on one end side of the hexagonal nut material 1. The tapered portion 2 is formed, for example, by a die in the case of punching with a nut former, or by cutting.
次いで、第１図Ｂに示すように、従来のような切込みを
入れないで、ナツト素材ｌの内周にねじ部１ａを刻設す
る。なお、この実施例においてナラ１〜素材１のねじ部
↓ａをこの工程で螺刻せず、テーパ部を形成する前に行
なってもよい。Next, as shown in FIG. 1B, a threaded portion 1a is carved on the inner periphery of the nut material 1 without making a cut as in the conventional method. In addition, in this embodiment, the threaded portion ↓a of the oak 1 to the material 1 may not be threaded in this step, but may be performed before forming the tapered portion.
次に、第１図Ｃ２第２図に示すように、尖端がテーパ部
２より小径の略６角錐の凹部Ｄａを備えた型りにて、テ
ーパ部２を軸線方向に圧搾して、テーパ部２のねじ孔２
ａを縮小させる。この結果、ねじ孔２ａは歪み、テーパ
部２の型りの凹所Ｄａと略相似形の６角形に近い非円形
となる。Next, as shown in FIG. 1 C2 and FIG. 2 screw hole 2
Reduce a. As a result, the screw hole 2a is distorted and becomes a non-circular shape close to a hexagon, which is substantially similar to the recess Da in the shape of the tapered portion 2.
このようにして、ナラ１〜素材から緩み止めナツトの完
成までが連続工程となる。こうして製作されたナツトは
、テーパ部２の非円形のねじ孔２ａによりボルトを締め
付けて緩み止めｉ〜ルクを得る。In this way, the process from the nut 1 to the raw material to the completion of the locking nut is a continuous process. In the nut thus manufactured, the bolt is tightened through the non-circular screw hole 2a of the tapered portion 2 to obtain a locking torque.
また、切込みを設けずに一体的に成型するため、ねじ孔
２ａがボルトに対して鋭角的に接触することがなく焼き
付きが防止され、さらに破損等が発生しにくい。Further, since the screw hole 2a is integrally molded without providing a notch, the screw hole 2a does not come into contact with the bolt at an acute angle, preventing seizing and further reducing the possibility of damage.
（発明の効果）
以上のように、本発明においては、多角形ナツト素材１
の一端側に円錐状のテーパ部２を形成する工程と、ナツ
ト素材１にねじ孔１ａを形成する工程と、多角錐の凹部
Ｄａを備えた型りにてチーパ部２を軸線方向に圧搾して
ねじ孔２ａを非円形に形成する工程とを含む方法を採用
したため、ナツト素材から緩み止めナツトの完成に至る
まで連続工程となる。また、こうして製作されたナツト
は、テーパ部２の非円形のねじ孔２ａによりボルトを締
め付けて良好な緩み止めトルクを得ることができる。さ
らに、切込みを設けずに一体成型するため、ねじ孔２ａ
がボルトに対して鋭角的に接触することがなく焼き付き
が防止され、さらに、強度を向上させることができると
いう効果を有する。(Effect of the invention) As described above, in the present invention, the polygonal nut material 1
A process of forming a conical taper part 2 on one end side, a process of forming a screw hole 1a in the nut material 1, and a process of compressing the tapered part 2 in the axial direction using a mold having a polygonal pyramidal concave part Da. Since the method including the step of forming the screw hole 2a in a non-circular shape is adopted, the process from the nut material to the completion of the locking nut is a continuous process. In addition, the nut manufactured in this manner can tighten the bolt through the non-circular screw hole 2a of the tapered portion 2 to obtain a good locking torque. Furthermore, since it is integrally molded without providing a cut, the screw hole 2a
This has the effect that the bolt does not come into contact with the bolt at an acute angle, preventing seizure and further improving strength.
第↓図及び第２図に本発明の実施例を示す。第１図Ａ乃
至Ｃは緩み止めナツトの製造工程を順を追って示す正面
図、及び平面図、第２図は第１図Ｃにおけるｎ−ｎ断面
図、第３図は従来の緩み止めナツトの製造工程を順を追
って示す正面図、及び平面図である。
１・・・多角形ナツト素材
１ａ・・・ねじ孔
２ａ・・・非円形のねじ孔
Ｄ・・・型
Ｄａ・・・凹所
へ ｅ
＋献羨
錠０巴 慣
ｆ凝＃Ｓ 和
塙・ ・剛・
・ の の ＋ の
−Ｉ−１囚口ｑ
第３図
（Ｄ）
「１≦ン −Ｄａ
〆 １ 。
３An embodiment of the present invention is shown in Fig. ↓ and Fig. 2. Figures 1A to C are front views and plan views showing the manufacturing process of a locking nut in order, Figure 2 is a sectional view taken along line nn in Figure 1C, and Figure 3 is a diagram of a conventional locking nut. They are a front view and a plan view showing the manufacturing process step by step. 1...Polygonal nut material 1a...Screw hole 2a...Non-circular screw hole D...Type Da...to the recess e + Kenzi lock 0 tomoe Information #S Wahana・・Tsuyoshi ・ ・ ＋ －I-1 口q Figure 3 (D) ``1≦N-Da 〆 1. 3
Claims (1)
成する工程と、前記ナット素材にねじ孔を形成する工程
と、多角錐の凹部を備えた型にて前記テーパ部を軸線方
向に圧搾してそのねじ孔を非円形に形成する工程とから
成ることを特徴とする緩み止めナットの製造方法。A step of forming a conical taper part on one end side of the polygonal nut material, a step of forming a screw hole in the nut material, and a step of compressing the tapered part in the axial direction with a mold having a polygonal pyramidal concave part. A method for manufacturing a locking nut, comprising the step of forming a screw hole in a non-circular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171780A JP2577258B2 (en) | 1989-07-05 | 1989-07-05 | Manufacturing method of locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171780A JP2577258B2 (en) | 1989-07-05 | 1989-07-05 | Manufacturing method of locking nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0337404A true JPH0337404A (en) | 1991-02-18 |
| JP2577258B2 JP2577258B2 (en) | 1997-01-29 |
Family
ID=15929545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1171780A Expired - Fee Related JP2577258B2 (en) | 1989-07-05 | 1989-07-05 | Manufacturing method of locking nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2577258B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5671549A (en) * | 1979-11-13 | 1981-06-15 | Sakamura Kikai Seisakusho:Kk | Manufacture of locking nut |
-
1989
- 1989-07-05 JP JP1171780A patent/JP2577258B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5671549A (en) * | 1979-11-13 | 1981-06-15 | Sakamura Kikai Seisakusho:Kk | Manufacture of locking nut |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2577258B2 (en) | 1997-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |