JPH0118289B2 - - Google Patents
Info
- Publication number
- JPH0118289B2 JPH0118289B2 JP16203181A JP16203181A JPH0118289B2 JP H0118289 B2 JPH0118289 B2 JP H0118289B2 JP 16203181 A JP16203181 A JP 16203181A JP 16203181 A JP16203181 A JP 16203181A JP H0118289 B2 JPH0118289 B2 JP H0118289B2
- Authority
- JP
- Japan
- Prior art keywords
- outer diameter
- washer
- shaft
- rolling
- diameter
- 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
- 238000005096 rolling process Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000011295 pitch Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Bolts, Nuts, And Washers (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、六角形頭部と、この頭部に隣接して
いてほぼねじの外径に等しい軸部と、この軸部に
隣接している端部のねじ部とを有する六角ボルト
に座金を一対に組み込む方法に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention provides a hexagonal head, a shank adjacent to the head and approximately equal to the outer diameter of the screw, and The present invention relates to a method for assembling a pair of washers into a hex bolt having a threaded end portion.
一般に使用されている座金付き六角ボルトの製
造に際しては、一定のねじ転造前の直径（以下ね
じ転造径と呼ぶ）を有する軸部に、ねじ転造径よ
り若干大きくかつねじ外径より小さい内径を有す
る座金を挿入した後、軸部にねじを転造し、これ
によつて軸部からの脱落を防止する方法が用いら
れている。
When manufacturing commonly used hexagon bolts with washers, the shaft portion has a certain diameter before thread rolling (hereinafter referred to as the thread rolling diameter), which is slightly larger than the thread rolling diameter and smaller than the thread outer diameter. A method is used in which a washer having an inner diameter is inserted and then a screw is rolled onto the shaft to prevent it from falling off the shaft.
しかしながら、一種のリーマーボルトとしてま
たは被締付体のガタ防止のために用いられる六角
ボルトの場合には、ねじのない軸部の直径をねじ
の外径とほぼ同一に作らなければならないので、
座金を軸部に脱落不能に取りつけるのがむずかし
く、従来適当な製造方法がなかつた。このため、
六角ボルトを使用する際にボルトに座金を組み込
んで使用するか、または六角ボルトに座金を予め
接着しておくなどの方法によつていたので、余分
な手数と時間がかかつていた。
However, in the case of hexagonal bolts used as a type of reamer bolt or to prevent looseness of the tightened object, the diameter of the unthreaded shaft must be made almost the same as the outer diameter of the screw.
It is difficult to attach the washer to the shaft in a non-removable manner, and there has been no suitable manufacturing method in the past. For this reason,
When using a hexagonal bolt, a washer was incorporated into the bolt, or a washer was glued to the hexagonal bolt in advance, which required extra labor and time.
本発明の目的は、上記の欠点を除去して、人手
によらずに六角ボルトの製造時に座金をボルトに
機械的に脱落不能に組み込むことができ、しかも
六角ボルト本来の目的をそこなわずに作ることが
できる座金付き六角ボルトの製造方法を提供する
ことである。 An object of the present invention is to eliminate the above-mentioned drawbacks, and to mechanically incorporate a washer into a hexagonal bolt in a non-removable manner during the manufacture of a hexagonal bolt without manual intervention, without impairing the original purpose of the hexagonal bolt. An object of the present invention is to provide a method for manufacturing a hexagonal bolt with a washer.
上記の目的を達成するには、本発明により、軸
部をねじの外径とねじの転造径のほぼ中間の軸径
に加工し、この軸部の外径より若干大きい内径を
有する座金を軸部に挿入した後、前記軸部にねじ
の外径とほぼ同じ外径を有する複数の突条を軸部
に平行に転造により形成し、その際前記座金が回
動可能に装着された状態に維持し、同時にまたは
その後端部にねじを転造すればよい。
In order to achieve the above object, according to the present invention, the shaft portion is processed to have a shaft diameter that is approximately halfway between the outer diameter of the thread and the rolled diameter of the thread, and a washer having an inner diameter slightly larger than the outer diameter of this shaft portion is provided. After being inserted into the shaft, a plurality of protrusions having an outer diameter approximately the same as the outer diameter of the screw are formed on the shaft by rolling in parallel to the shaft, and at this time the washer is rotatably mounted. The thread may be rolled at the same time or at the rear end.
以下、本発明を図面に示す実施例により詳細に
説明する。
Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.
第１図は本発明の方法により製造された座金付
き六角ボルトを示すが、１２は六角ボルト１０の
六角形頭部、１３はその軸部、１４はボルトの軸
部１３の端部に設けられたねじ部、１６が六角頭
部１２に隣接して軸部１３に脱落不能に位置した
座金である。 FIG. 1 shows a hexagonal bolt with washer manufactured by the method of the present invention, in which 12 is the hexagonal head of the hexagonal bolt 10, 13 is the shaft thereof, and 14 is the end of the bolt shaft 13. A threaded portion 16 is a washer that is irremovably located on the shaft portion 13 adjacent to the hexagonal head 12.
本発明の方法により製造された座金付き六角ボ
ルトは、ねじ部１４と、頭部１２に隣接した座金
１６との間の軸部に突条としてセレーシヨン１８
が転造により形成されている。このセレーシヨン
１８は、適当な山角度の三角形の山を適当なピツ
チでボルト軸心と平行に配列したものである。こ
の実施例では、第２図に示したように、セレーシ
ヨンの山形の山角度が90゜、ピツチが20゜である。
山角度は60゜〜90゜の範囲が望ましい。また、ボル
トの強度および締め付けの際に影響がないように
セレーシヨン１８の谷底の曲率半径はできるだけ
大きくするのが望ましい。 The hexagonal bolt with washer manufactured by the method of the present invention has serrations 18 as protrusions on the shaft between the threaded portion 14 and the washer 16 adjacent to the head 12.
is formed by rolling. The serrations 18 are triangular peaks with appropriate peak angles arranged at an appropriate pitch parallel to the bolt axis. In this embodiment, as shown in FIG. 2, the angle of the serrations is 90 degrees, and the pitch is 20 degrees.
The angle of the peak is preferably in the range of 60° to 90°. Further, it is desirable that the radius of curvature of the bottom of the serrations 18 be as large as possible so as not to affect the strength of the bolt and the tightening process.
セレーシヨン１８の外径はねじ部１４の外径と
ほぼ同じにしてある。リーマーボルトとして使用
する場合には、セレーシヨン１８の外径がねじ外
径より約5/100〜10/100mm位大きめになるように
設定できる。従つて、セレーシヨン外径を被締付
体の孔に応じて任意に設定できる。また、座金１
６が回動可能に嵌まつている、ボルト頭部１２と
セレーシヨン１８の間の軸部の部分の外径はセレ
ーシヨン１８の転造前の直径d1（以下セレーシヨ
ン転造径と呼ぶ）であり、一方座金１６の孔の内
径はセレーシヨン１８の外径Ｄとセレーシヨン転
造径d1の間の中間の範囲にある。 The outer diameter of the serrations 18 is approximately the same as the outer diameter of the threaded portion 14. When used as a reamer bolt, the outer diameter of the serrations 18 can be set to be about 5/100 to 10/100 mm larger than the thread outer diameter. Therefore, the outer diameter of the serration can be arbitrarily set depending on the hole of the object to be tightened. Also, washer 1
The outer diameter of the shaft portion between the bolt head 12 and the serrations 18 in which the bolt 6 is rotatably fitted is the diameter d 1 of the serrations 18 before rolling (hereinafter referred to as the serration rolling diameter). , while the inner diameter of the hole in the washer 16 is in the intermediate range between the outer diameter D of the serrations 18 and the serration rolling diameter d 1 .
次に、本発明の座金付き六角ボルトの製造方法
を説明する。 Next, a method of manufacturing a hexagonal bolt with a washer according to the present invention will be explained.
第３図には、ねじおよびセレーシヨンの転造前
のボルト素材の側面図を示してある。まず、第３
図のように、ボルト素材の軸部１３のねじ部１４
となる端部１４′をねじ転造径d2に加工し、かつ
端部１４′と頭部１２の中間にある軸部１８′をセ
レーシヨン１８の転造径d1に加工する。セレーシ
ヨン転造径d1はねじ転造径d2よりわずかに大き
く、かつねじ外径より小さいのが好適である。次
いで、セレーシヨン転造径d1より大きい内径を有
しかつセレーシヨン外径Ｄより小さい内径の孔を
有する座金１６を軸部１３′に挿入して頭部１２
に隣接した位置に配置する。それから、ダイスに
より軸部の端子１４′にねじ１４を転造し、それ
から頭部１２に隣接した座金１６とねじ部１４の
間の軸部１８′にセレーシヨン１８を転造する。 FIG. 3 shows a side view of the bolt material before thread and serration rolling. First, the third
As shown in the figure, the threaded portion 14 of the shaft portion 13 of the bolt material
The end portion 14' is machined to have a thread rolling diameter d2 , and the shaft portion 18' located between the end portion 14' and the head 12 is machined to a rolling diameter d1 of the serration 18. The serration rolling diameter d 1 is preferably slightly larger than the thread rolling diameter d 2 and smaller than the thread outer diameter. Next, a washer 16 having a hole with an inner diameter larger than the serration rolling diameter d 1 and smaller than the serration outer diameter D is inserted into the shaft portion 13' to open the head 12.
Place it adjacent to. A die is then used to roll the screw 14 onto the terminal 14' of the shank, and then a serration 18 is rolled onto the shank 18' between the washer 16 adjacent the head 12 and the threaded portion 14.
この転造工程では、ねじ部１４を通常の平ダイ
スで転造し、一方セレーシヨン１８を第４図と第
５図に示した形状の平ダイス３０により転造する
ことができる。この平ダイス３０の一面には、セ
レーシヨン部３２と、これに隣接する、正確にホ
ーニング仕上げされた平面部３４とが形成されて
いる。第６図にこのダイスのセレーシヨン部の山
形の一例を示してある。このような形状を有する
固定側と移動側の２枚の平ダイスを用いると、ま
ずそのセレーシヨン部３２により転造径D′の軸
部１８にセレーシヨン１８が加工され、その後連
続するダイスの平面部３４によりセレーシヨン１
８の山頂が押しつぶされて第２図に示したような
外径Ｄを有する山形に変形する。この場合、ダイ
スのセレーシヨン部３２に対して平面部の寸法
を、セレーシヨン１８の外径がねじ部１４の外径
とほぼ同じになるように設定しておけばよい。 In this rolling step, the threaded portion 14 can be rolled with a common flat die, while the serrations 18 can be rolled with a flat die 30 having the shape shown in FIGS. 4 and 5. A serration portion 32 and an adjacent flat portion 34 that has been accurately honed are formed on one surface of the flat die 30. FIG. 6 shows an example of the chevron shape of the serrations of this die. When two flat dies having such a shape, one on the fixed side and one on the movable side, are used, the serration 18 is first formed on the shaft portion 18 of rolling diameter D' by the serration portion 32, and then the continuous flat portion of the die is processed. Serration 1 by 34
The peak of No. 8 is crushed and deformed into a mountain shape having an outer diameter D as shown in FIG. In this case, the dimensions of the flat portion of the serrations 32 of the die may be set so that the outer diameter of the serrations 18 is approximately the same as the outer diameter of the threaded portion 14.
また、この六角ボルトを特にリーマーボルトと
して使用する場合は、セレーシヨン１８の転造径
D′を所定の外径寸法に仕上げるように、すなわ
ち転造後のセレーシヨン外径がねじ外径より約
100分の数ミリメートル、例えば5/100〜10/100mm
位大きめになるようにダイスの平面部寸法を設定
することもできる。従つて、セレーシヨン外径を
その範囲で被締付体の孔に応じて任意に設定でき
る。 In addition, when using this hexagonal bolt as a reamer bolt, the rolling diameter of serration 18
In order to finish D′ to the specified outer diameter, that is, the outer diameter of the serration after rolling is approximately smaller than the outer diameter of the thread.
A few hundredths of a millimeter, e.g. 5/100 to 10/100mm
It is also possible to set the dimensions of the plane part of the die so that it is larger. Therefore, the outer diameter of the serration can be arbitrarily set within that range depending on the hole of the object to be tightened.
また、転造工程において、第７図に示したよう
に、ねじを転造するためのねじダイス面４２と、
これに隣接したセレーシヨン部４４および平面部
４６とを相並んで有する複合ダイス４０を用いる
と、セレーシヨン１８とねじ１４を同時に転造で
き、従つて工程数を節減できる。 In addition, in the rolling process, as shown in FIG. 7, a thread die surface 42 for rolling the thread,
By using a composite die 40 having adjacent serration portions 44 and flat portions 46 side by side, the serrations 18 and the screws 14 can be rolled simultaneously, thereby reducing the number of steps.
本発明の製造方法により作られた座金付き六角
ボルトでは、座金が軸部に離脱不能に組み込まれ
ているにもかかわらず、ねじ部の外径とほぼ同じ
直径の軸部を有するので、本来の六角ボルトとし
ての機能をなんらそこなうことがない。また、本
発明の製造方法により作られた座金付き六角ボル
トは、ねじ外径とほぼ同径の突条が軸部に設けら
れているので、慣用のねじ外径と同じ軸径を有す
る六角ボルトよりボルトの重量が軽減される。さ
らに、本発明に使用する座金の孔の内径が突条外
径、従つてねじ外径より小さく、従つて従来の座
金の孔の内径より小さいので、被締め付け体の座
圧面積も大きくなり、いつそう安定して締め付け
ができる。
In the hexagonal bolt with washer manufactured by the manufacturing method of the present invention, although the washer is irremovably incorporated into the shaft portion, the shaft portion has a diameter that is approximately the same as the outer diameter of the threaded portion. It does not impair its function as a hex bolt in any way. In addition, the hexagonal bolt with washer manufactured by the manufacturing method of the present invention has a protrusion on the shaft portion that has approximately the same diameter as the outer diameter of the thread, so it is possible to use the hexagonal bolt with a washer that has the same diameter as the outer diameter of the conventional thread. The weight of the bolt is reduced. Furthermore, since the inner diameter of the hole in the washer used in the present invention is smaller than the outer diameter of the protrusion, therefore the outer diameter of the thread, and therefore smaller than the inner diameter of the hole of a conventional washer, the bearing pressure area of the clamped body also increases. When can you tighten it so stably?
また、本発明の座金付き六角ボルトの製造方法
では、転造工程で座金をボルト軸径に離脱不能に
組み込むことができるので、実際の使用時に座金
を手でボルトに差し込んだり、または予め接着剤
によりボルトに組み込んだりする従来の方法に比
較してはるかに工程数を節減できかつ量産が容易
になる。 In addition, in the method for manufacturing a hexagonal bolt with a washer of the present invention, the washer can be irremovably incorporated into the bolt shaft diameter during the rolling process, so the washer can be inserted into the bolt by hand during actual use, or Compared to the conventional method of incorporating it into bolts, the number of steps can be greatly reduced and mass production becomes easier.
本発明の製造方法により作られた六角ボルトを
特にリーマーボルトとして使用する場合は、突条
の転造径を所定の外径になるように、すなわちね
じ外径より約100分の数ミリメートル位大きいセ
レーシヨン外径になるように設定することができ
る。従つて、セレーシヨン外径を被締付体の孔に
応じて任意に設定できる。 When using the hexagonal bolt made by the manufacturing method of the present invention particularly as a reamer bolt, the rolling diameter of the protrusion should be set to a predetermined outer diameter, that is, about several hundredths of a millimeter larger than the thread outer diameter. It can be set to have the serration outer diameter. Therefore, the outer diameter of the serration can be arbitrarily set depending on the hole of the object to be tightened.
第１図は本発明の製造方法により作られた座金
付き六角ボルトの側面図、第２図は第１図の線Ａ
−A′に沿つて切断したセレーシヨンの部分横断
面図、第３図はねじおよびセレーシヨン転造前の
ボルト素材の側面図、第４図はボルト軸部にセレ
ーシヨンを転造するための平ダイスの側面図、第
５図は第４図の平ダイスの側面図、第６図はダイ
スのセレーシヨンの山形の断面を示す図、第７図
はセレーシヨンとねじを同時に転造できるダイス
の平面図である。
１２……頭部、１３……軸部、１４……ねじ
部、１６……座金、１８……突条。
Fig. 1 is a side view of a hexagonal bolt with washer manufactured by the manufacturing method of the present invention, and Fig. 2 is a line A in Fig. 1.
- A partial cross-sectional view of the serrations cut along A', Figure 3 is a side view of the screw and the bolt material before serration rolling, and Figure 4 shows the flat die for rolling the serrations on the bolt shaft. 5 is a side view of the flat die shown in FIG. 4, FIG. 6 is a diagram showing a chevron-shaped cross section of the serrations of the die, and FIG. 7 is a plan view of the die that can simultaneously roll serrations and screws. . 12...Head, 13...Shaft, 14...Threaded part, 16...Washer, 18...Protrusion.
Claims (1)
ねじの外径に等しい軸部と、この軸部に隣接して
いる端部のねじ部とを有する六角ボルトに座金を
一体に組み込む方法において、前記軸部をねじの
外径とねじの転造径のほぼ中間の軸径に加工し、
この軸部の外径より若干大きい内径を有する座金
を軸部に挿入した後、前記軸部にねじの外径とほ
ぼ同じ外径を有する複数の突条を軸部に平行に転
造により形成し、その際前記座金が回動可能に装
着された状態に維持し、同時にまたはその後端部
にねじを転造することを特徴とする、座金付き六
角ボルトの製造方法。 ２ 前記複数の突条が、適当な山角度を適当なピ
ツチで配列したセレーシヨンである、特許請求の
範囲第１項に記載の方法。 ３ 前記突条を転造した後、同一のダイスで連続
的に平転造を行つて突条の山頂を若干押しつぶ
し、突条外径をねじの外径と同一にした、特許請
求の範囲第１項に記載の方法。 ４ 前記突条をボルトの軸心に対し平行に配列し
た、特許請求の範囲第１項に記載の方法。 ５ 前記突条を転造した後、突条の山頂を平転造
により若干押しつぶして所定の外径に仕上げ、リ
ーマーボルトとして使用できるようにした、特許
請求の範囲第１項に記載の方法。 ６ ねじ部と突条の転造加工を同一のダイスで同
時に行うようにした、特許請求の範囲第１項に記
載の方法。[Claims] 1. A hexagonal bolt having a hexagonal head, a shank adjacent to the head and approximately equal to the outer diameter of the screw, and a threaded end adjacent to the shank. In a method of integrally incorporating a washer into a screw, the shaft portion is processed to have a shaft diameter approximately intermediate between the outer diameter of the screw and the rolled diameter of the screw,
After inserting a washer having an inner diameter slightly larger than the outer diameter of this shaft into the shaft, a plurality of protrusions having an outer diameter approximately the same as the outer diameter of the screw are formed on the shaft by rolling in parallel to the shaft. A method for manufacturing a hexagonal bolt with a washer, characterized in that the washer is maintained in a rotatably mounted state and a thread is rolled at the same time or at its rear end. 2. The method according to claim 1, wherein the plurality of protrusions are serrations in which appropriate peak angles are arranged at appropriate pitches. 3 After rolling the protrusion, flat rolling is performed continuously using the same die to slightly crush the peak of the protrusion so that the outer diameter of the protrusion is made the same as the outer diameter of the screw. The method described in Section 1. 4. The method according to claim 1, wherein the protrusions are arranged parallel to the axis of the bolt. 5. The method according to claim 1, wherein after rolling the protrusion, the peak of the protrusion is slightly crushed by flat rolling to a predetermined outer diameter so that it can be used as a reamer bolt. 6. The method according to claim 1, wherein the threaded portion and the protrusion are rolled simultaneously using the same die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16203181A JPS5865310A (en) | 1981-10-13 | 1981-10-13 | Axial diameter bolt with washer and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16203181A JPS5865310A (en) | 1981-10-13 | 1981-10-13 | Axial diameter bolt with washer and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5865310A JPS5865310A (en) | 1983-04-19 |
| JPH0118289B2 true JPH0118289B2 (en) | 1989-04-05 |
Family
ID=15746756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16203181A Granted JPS5865310A (en) | 1981-10-13 | 1981-10-13 | Axial diameter bolt with washer and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5865310A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629720U (en) * | 1985-07-04 | 1987-01-21 | ||
| JP2016205265A (en) * | 2015-04-24 | 2016-12-08 | 三菱電機株式会社 | Torque transmission device and its process of manufacture |
-
1981
- 1981-10-13 JP JP16203181A patent/JPS5865310A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5865310A (en) | 1983-04-19 |
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