JPH03149128A - Manufacture for thread machining tool - Google Patents
Manufacture for thread machining toolInfo
- Publication number
- JPH03149128A JPH03149128A JP28550289A JP28550289A JPH03149128A JP H03149128 A JPH03149128 A JP H03149128A JP 28550289 A JP28550289 A JP 28550289A JP 28550289 A JP28550289 A JP 28550289A JP H03149128 A JPH03149128 A JP H03149128A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- thread machining
- base
- self
- screw
- 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.)
- Pending
Links
- 238000003754 machining Methods 0.000 title abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 238000005096 rolling process Methods 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、弛み防止機能を備えた自己固定型ねじを形成
するためのねじ加工具の製造方法に関する。・
（従来の技術）
自己固定型ねじとして、雄ねじのねじ山の先端部に径方
向の溝を設け、その溝を挟んで対向する部分が雌ねじと
の螺合時に近接するように弾性変形し、これの弾性復元
力によってねじの弛み防止を図ったものがあり、この種
の自己固定型ねじを製作するものとして、特開昭６２−
２４１６１３号公報に転造平ダイスが記載されている。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a threading tool for forming a self-fixing screw with a loosening prevention function.・ (Prior art) As a self-fixing screw, a radial groove is provided at the tip of the thread of the male screw, and the opposing portions across the groove are elastically deformed so as to be close to each other when screwed together with the female screw. There is a device that uses the elastic restoring force of this screw to prevent the screw from loosening, and as a method for manufacturing this type of self-fixing screw, Japanese Patent Application Laid-Open No. 62-1999
A rolling flat die is described in Japanese Patent No. 241613.
これは、板状のダイス基台に多条ねじを転造予備形成す
るための第１ねじ加工部が基台長手方向一端から中央部
に亘って形成され、ダイス基台の中央部から他端に亘っ
て第１ねじ加工部で形成された多条ねじの隣合うねじ山
を塑性変形により合体してねじ山の先端部に径方向の溝
を有する自己固定型ねじを転造本形成するための第２加
工部が前記第１加工部と連続して形成されているもので
ある。The first thread processing section for pre-rolling and forming a multi-start thread on a plate-shaped die base is formed from one longitudinal end of the base to the center, and from the center of the die base to the other end. In order to form a self-fixing screw having a radial groove at the tip of the thread by plastic deformation, the adjacent threads of the multi-thread thread formed in the first thread processing section are combined to form a rolled book. The second processed portion is formed continuously with the first processed portion.
（発明が解決しようとする課題）
一般に、転造ダイスの製造にあっては、歯切工具でダイ
ス基台にねじ加工部が形成されるのであるが、前記従来
の転造ダイスのように、１つのダイス基台に形状の異な
る第１、第２ねじ加工部を連続条に形成するのは非常に
難しい上に、加工距離が長くなってねじ加工部の精度が
悪くなるという問題がある。(Problems to be Solved by the Invention) Generally, in manufacturing rolling dies, a threaded portion is formed on the die base using a gear cutting tool. It is very difficult to form first and second threaded parts of different shapes in a continuous strip on one die base, and there is a problem that the processing distance becomes long and the accuracy of the threaded part deteriorates.
そこで本発明は、自己固定型ねじを形成するためのねじ
加工具を簡単に製造でき、ねじ加工部の精度向上を企図
することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to easily manufacture a thread processing tool for forming a self-fixing screw, and to improve the accuracy of the thread processing part.
（課題を解決するための手段）
本発明が前記目的を達成するために講じた技術的手段は
、多条ねじ５を予備形成するための第１ねじ加工部２と
、該第１ねじ加工部２で形成された多条ねじ５の隣合う
ねじ山６同志を合体してねじ山７の先端部に径方向の溝
８を有する自己固定型ねじ４を本形成するための第２ね
じ加工部３とを夫々別個の基台１１．１２に形成した後
に、それら基台１１．１２同志を、第１ねじ加工部２と
第２ねじ−加工部３とが連続状となるように接合一体化
する点にある。(Means for Solving the Problems) The technical means taken by the present invention to achieve the above object are: a first thread processing section 2 for preforming a multi-thread thread 5; A second thread processing section for forming a self-fixing screw 4 having a radial groove 8 at the tip of the thread 7 by combining adjacent threads 6 of the multi-thread thread 5 formed by the threads 2. 3 are formed into separate bases 11 and 12, respectively, and then the bases 11 and 12 are joined and integrated so that the first threaded part 2 and the second threaded part 3 are continuous. It is in the point of doing.
（作 用）
本発明では、第１ねじ加工部２と第２ねじ加工部３とを
夫々別個の基台１１．１２に形成した後に、それら基台
１１．１２同志を接合一体化してねじ加工具ｌが形成さ
れており、ねじ加工部２，３が極めて容易に形成可能と
され、精度も良好なものとされている。(Function) In the present invention, after forming the first threaded portion 2 and the second threaded portion 3 on separate bases 11.12, the bases 11.12 are joined and integrated to perform screw threading. The tool 1 is formed so that the threaded parts 2 and 3 can be formed extremely easily and the accuracy is also good.
（実施例） 以下、本発明の実施例を図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the drawings.
第１図において、１はねじ加工具として例示する転造平
ダイスで、ねじ加工時におけるダイス移動方向前半部が
第２図（Ａ）で示す加工刃形の第１ねじ加工部２とされ
、後半部が第２図（Ｂ）で示す加工刃形の第２ねじ加工
部３とされている。In FIG. 1, 1 is a rolled flat die illustrated as a thread processing tool, and the front half of the die movement direction during thread processing is a first thread processing portion 2 having the processing blade shape shown in FIG. 2(A), The rear half is a second thread processing section 3 having a processing blade shape as shown in FIG. 2(B).
この転造平ダイス１は第５図に示すような溝付き自己固
定型ねじ４を転造するもので、一対のダイスｌの間にね
じ素材を挟み付け、ねじ素材を挟圧しながら一方のダイ
ス１を他方に対して擦れ違い状に移行することにより、
第１ねじ加工部２で第２図に示すような所定のリード角
とピッチをもった２条ねじく多条ねじ）５が転造予備形
成され、その後、第４図にも示すように、第２ねじ加工
部２で前記２条ねじ５の隣合うねじ山６同志が塑性変形
により合体されて２条ねじ５と同じリード角で２倍ピッ
チの溝付き自己固定型ねじ４が転造本形成される。なお
、この自己固定型ねじ４はねじ山７の先端部の溝８を挟
んで対向する部分９が第６図に示すように雌ねじ１０と
の螺合時に近接するように弾性変形し、これの弾性復元
力によって弛み防止が図られるものである。This flat rolling die 1 is used to roll a grooved self-fixing screw 4 as shown in FIG. By shifting 1 to the other in a rubbing manner,
In the first thread processing section 2, a double thread (multi-start thread) 5 having a predetermined lead angle and pitch as shown in FIG. 2 is preformed by rolling, and then, as shown in FIG. In the second thread processing section 2, the adjacent threads 6 of the double thread screw 5 are combined by plastic deformation to form a self-fixing screw 4 with grooves having the same lead angle and twice the pitch as the double thread screw 5. It is formed. In addition, in this self-fixing screw 4, the portion 9 at the tip of the thread 7 that faces across the groove 8 elastically deforms so as to approach the female screw 10 as shown in FIG. The elastic restoring force prevents loosening.
前記ダイスｌは第１ねじ加工部２を備えた第１基台１１
と、第２ねじ加工部３を備えた第２基台１２とが接合さ
れてなる。本実施例では、一方の基台１１に長手方向に
貫通する保合段部１５ａ付のボルト挿通孔１５が形成さ
れ、他方の基台１２の接合側端面にねじ穴１６が形成さ
れていて、ボルト１７を介して両基台１１．１２が接合
されている。The die l is a first base 11 provided with a first threaded part 2.
and the second base 12 provided with the second threaded part 3 are joined. In this embodiment, a bolt insertion hole 15 with a locking step 15a penetrating in the longitudinal direction is formed in one base 11, and a screw hole 16 is formed in the joint side end surface of the other base 12. Both bases 11.12 are joined via bolts 17.
このダイスｌを製作するには、先ず、直方体の板材より
なる第１、第２基台１１．１２の６面を研磨した後に、
各基台１１．１２に対してねじ加工部１１，１２をホブ
等の歯切工具で１刃ごと形成する。次に、２条ねじ５の
隣合う２条のねＵ山６を形成する第１加工部２の２条の
溝と、該２条ねじ５の隣合う２条のねじ山６を合体する
第２加工部３の１条の溝とが直線上に連続状となるよう
に、両基台１１，１２を突き合わせて治具に固定しボル
ト１７によって接合一体化し、その後、熱処理をする。To manufacture this die l, first, after polishing the six sides of the first and second bases 11 and 12 made of rectangular parallelepiped plates,
Threaded portions 11 and 12 are formed for each blade of each base 11 and 12 using a gear cutting tool such as a hob. Next, the two grooves of the first processed portion 2 that form the two adjacent threads 6 of the double thread screw 5 and the grooves of the first processed part 2 that form the two threads 6 of the double thread screw 5 that are adjacent to each other are combined. Both bases 11 and 12 are butted against each other and fixed to a jig so that the grooves of the two processed parts 3 are continuous in a straight line, and are joined together with bolts 17, and then heat treated.
また、前記第１、第２ねじ加工部２，３の加工にあたっ
ては、各基台１１．１２が接合された際に、同側となる
幅方向一側面を基準面１３．１４としてねじ加工部１１
．１２の加工刃の位置が決定されていて、基準面１３．
１４を面一状とすることで、第１加工部２と第２加工部
３とが連続状となるようにされている。このとき、第１
加工部２と第２加工部３との間に極僅かなずれがあって
もボルト挿通孔１５とボルト１７との間の間隔で修正で
きる。In addition, when processing the first and second threaded parts 2 and 3, when each base 11.12 is joined, one side in the width direction on the same side is used as a reference plane 13.14 for the threaded part. 11
．． The position of the machining blade 12 has been determined, and the position of the processing blade 13.
14 is flush, so that the first processed portion 2 and the second processed portion 3 are continuous. At this time, the first
Even if there is a very slight deviation between the processed part 2 and the second processed part 3, it can be corrected by the distance between the bolt insertion hole 15 and the bolt 17.
なお、第１基台１１と第２基台１２との接合は溶接等如
何なる手段でされても良く、また、本発明は転造平ダイ
スの他、転造ロールダイス、タップ、圧造ダイス等に適
用することができる。Note that the first base 11 and the second base 12 may be joined by any means such as welding, and the present invention is applicable to rolling roll dies, taps, heading dies, etc. in addition to rolling flat dies. Can be applied.
（発明の効果）
本発明によれば、多条ねじ５を予備形成するための第１
ねじ加工部２と、該第１ねじ加工部２で 形成された多
条ねじ５の隣合うねじ山６同志を合体してねじ山７の先
端部に径方向の溝８を有する自己固定型ねじ４を本形成
するための第２ねじ加工部３とを夫々別個の基台１１．
１２に形成した後に、それら基台１１．１２同志を、第
１ねじ加工部２と第２ねじ加工部３とが連続状となるよ
に接合一体化するので、前記第１ねじ加工部２と第２ね
じ加工部３とを備えたねじ加工具１を極めて容易に製造
でき、しかも、ねじ加工部２．３の精度向上を図ること
ができる。(Effects of the Invention) According to the present invention, the first
A self-fixing screw having a radial groove 8 at the tip of the thread 7 by combining adjacent threads 6 of the multi-thread thread 5 formed by the thread processing part 2 and the first thread processing part 2. 4 and the second threaded part 3 for final forming the base 11.
12, the bases 11 and 12 are joined and integrated so that the first threaded part 2 and the second threaded part 3 are continuous, so that the first threaded part 2 and The threading tool 1 equipped with the second threading section 3 can be manufactured extremely easily, and the precision of the threading section 2.3 can be improved.
図面は本発明の一実施例を示し、第１図は転造平ダイス
の外観図、第２図はねじ加工部の形状説明図、第３図は
第１基台と第２基台との接合部分の側断面図、第４図は
自己固定型ねじの転造を示す要部断面図、第５図はねじ
山の断面図、第６図は螺合状態を示すねじ山の断面図で
ある。
１・・・転造ダイス（ねじ加工具）、２・・・第１ねじ
加工部、３・・・第２ねじ加工部、４・・・自己固定型
ねじ、５・・・２条ねじ（多条ねじ）、６・・・ねじ山
、７・・・ねじ山、８・・・溝。The drawings show an embodiment of the present invention, in which Fig. 1 is an external view of a rolling flat die, Fig. 2 is an explanatory drawing of the shape of the threaded part, and Fig. 3 is an illustration of the configuration of the first base and the second base. Fig. 4 is a cross-sectional view of the main part showing rolling of the self-fixing screw, Fig. 5 is a cross-sectional view of the thread, and Fig. 6 is a cross-sectional view of the thread showing the threaded state. be. 1... Rolling die (thread processing tool), 2... First thread processing section, 3... Second thread processing section, 4... Self-fixing screw, 5... Double thread screw ( (multi-thread thread), 6...thread, 7...thread, 8...groove.
Claims (1)
工部（２）と、該第１ねじ加工部（２）で形成された多
条ねじ（５）の隣合うねじ山（６）同志を合体してねじ
山（７）の先端部に径方向の溝（８）を有する自己固定
型ねじ（４）を本形成するための第２ねじ加工部（３）
とを夫々別個の基台（１１）（１２）に形成した後に、
それら基台（１１）（１２）同志を、第１ねじ加工部（
２）と第２ねじ加工部（３）とが連続状となるように接
合一体化することを特徴とするねじ加工具の製造方法。(1) A first thread processing section (2) for preforming a multi-thread thread (5), and adjacent threads ( 6) A second thread processing part (3) for joining together to form a self-fixing screw (4) having a radial groove (8) at the tip of the thread (7).
After forming these on separate bases (11) and (12), respectively,
These bases (11) and (12) are connected to the first screw processing section (
2) and the second threaded part (3) are joined and integrated so as to be continuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28550289A JPH03149128A (en) | 1989-10-31 | 1989-10-31 | Manufacture for thread machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28550289A JPH03149128A (en) | 1989-10-31 | 1989-10-31 | Manufacture for thread machining tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03149128A true JPH03149128A (en) | 1991-06-25 |
Family
ID=17692360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28550289A Pending JPH03149128A (en) | 1989-10-31 | 1989-10-31 | Manufacture for thread machining tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03149128A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742724A (en) * | 1993-08-03 | 1995-02-10 | Idea:Kk | Self-lock bolt, its manufacture and die |
| JPH07224830A (en) * | 1994-02-08 | 1995-08-22 | Idea:Kk | Manufacturing device of self-lock bolt |
| WO2006083655A1 (en) * | 2005-01-28 | 2006-08-10 | Garver Michael A | Major diameter correcting re-roll thread rolling die |
-
1989
- 1989-10-31 JP JP28550289A patent/JPH03149128A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742724A (en) * | 1993-08-03 | 1995-02-10 | Idea:Kk | Self-lock bolt, its manufacture and die |
| JPH07224830A (en) * | 1994-02-08 | 1995-08-22 | Idea:Kk | Manufacturing device of self-lock bolt |
| WO2006083655A1 (en) * | 2005-01-28 | 2006-08-10 | Garver Michael A | Major diameter correcting re-roll thread rolling die |
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