JPH10244340A - Head for roll-forming tapered screw for pipe - Google Patents
Head for roll-forming tapered screw for pipeInfo
- Publication number
- JPH10244340A JPH10244340A JP4792097A JP4792097A JPH10244340A JP H10244340 A JPH10244340 A JP H10244340A JP 4792097 A JP4792097 A JP 4792097A JP 4792097 A JP4792097 A JP 4792097A JP H10244340 A JPH10244340 A JP H10244340A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- rotor
- pipe
- thread rolling
- processed
- 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
Landscapes
- Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は管用テーパーねじ転
造用ヘッドに関する。詳しくは、被加工管にねじ転造終
了後、被加工管の取り出しが可能となるように自動的に
ねじ転造用ローラが退避するテーパーねじ転造用ヘッド
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taper thread rolling head for pipes. More specifically, the present invention relates to a taper thread rolling head in which a thread rolling roller is automatically retracted after the thread rolling to a workpiece pipe is completed so that the workpiece pipe can be taken out.
【０００２】[0002]
【従来の技術】従来、水道配管用の鋼管を管継手を用い
て接続する場合には、図６に示すように鋼管１の端部に
管用テーパーねじ２を加工し、継手３を用いて接続して
いる。この場合のテーパーねじの加工には切削形成する
方法と、塑性加工する方法とがある。本発明は後者の場
合のねじ転造用ヘッドに関するものである。2. Description of the Related Art Conventionally, when connecting a steel pipe for water supply using a pipe joint, a pipe taper screw 2 is machined at an end of the steel pipe 1 as shown in FIG. doing. In this case, there are a method of forming the tapered screw by cutting and a method of performing plastic forming. The present invention relates to the head for thread rolling in the latter case.
【０００３】テーパーねじを塑性加工するには、図７に
示すようなテーパーねじ転造用ヘッドを用いる。このテ
ーパーねじ転造用ヘッド４は同図に示すように、所望の
テーパー勾配に等しいテーパー周面部分を有し、かつ所
望のねじの有効径リード角とほぼ等しいリード角θの転
造成形ねじ部５ａ（例えばローラ軸線Ｘに対し１°４
７′の角度を有するテーパー周面）と、上記転造成形ね
じ部５ａに隣接して上記テーパー勾配より大きな勾配の
テーパー周面部分（例えば８°）を有する絞り成形ねじ
部５ｂとからなる転造ローラ５（絞り成形ねじ部５ｂの
ねじ山の形状は転造成形ねじ部５ａのねじ山と異なる形
状でも同一形状でも良い。）の複数個が、円筒状のハウ
ジング６の円周上に被加工管７の軸線に対してそれぞれ
平行に配設されている。In order to form a taper screw plastically, a taper screw rolling head as shown in FIG. 7 is used. As shown in the drawing, the tapered thread rolling head 4 has a tapered peripheral surface portion equal to a desired taper gradient and has a lead angle θ substantially equal to the effective diameter lead angle of the desired screw. Part 5a (for example, 1 ° 4 with respect to the roller axis X)
7 ') and a draw forming screw portion 5b adjacent to the roll forming screw portion 5a and having a tapered circumferential surface portion (for example, 8 °) having a gradient larger than the taper gradient. A plurality of forming rollers 5 (the shape of the thread of the drawing forming screw portion 5b may be different from or the same as the shape of the thread of the rolling forming screw portion 5a) are covered on the circumference of the cylindrical housing 6. The processing pipes 7 are arranged in parallel with each other.
【０００４】そして、ヘッド４を固定しておき、そのね
じ転造用ローラ５間に被加工管７を回転させながら押し
込むことにより、被加工管７はねじ転造用ローラ５のリ
ード角により矢印Ａ方向に引き込まれ、その外周にテー
パーねじが転造形成されるようになっている。なお、被
加工管７を回転させず、ヘッド４の方を回転させても転
造可能である。[0004] The head 4 is fixed, and the work tube 7 is pushed between the thread rolling rollers 5 while rotating the work tube 7. It is drawn in the direction A, and a tapered screw is formed by rolling on the outer periphery. In addition, it is possible to roll even if the head 4 is rotated without rotating the pipe 7 to be processed.
【０００５】[0005]
【発明が解決しようとする課題】このようなねじ転造用
ヘッドでは、ねじ転造加工終了時に、加工時に形成され
たねじと転造ローラの溝とが噛合っているため転造加工
が修了した後被加工管をヘッドより取り出すには被加工
管を逆転させて取り出さなければならない。このため作
業が煩雑になり、作業効率が悪くなるという問題があ
る。In such a thread rolling head, when the thread rolling is completed, the thread formed at the time of machining is engaged with the groove of the rolling roller, so that the thread rolling is completed. After that, in order to take out the work tube from the head, the work tube has to be reversed and taken out. For this reason, there is a problem that work becomes complicated and work efficiency is deteriorated.
【０００６】本発明は、上記従来の問題点に鑑み、ねじ
転造加工後の被加工管の取り出しを極めて容易とした管
用テーパねじ転造用ヘッドを実現することを目的とす
る。The present invention has been made in view of the above-described conventional problems, and has as its object to realize a tapered thread rolling head for pipes in which it is extremely easy to take out a pipe to be processed after thread rolling.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、表蓋
１１と裏蓋１２とよりなるハウジング１０内に所望のテ
ーパー勾配に等しいテーパー周面を持つ複数個のねじ転
造用ローラ１６が円周状に配置され、被加工管を回転さ
せながら上記ねじ転造用ローラ間に押し込むことにより
該被加工管の外周にテーパーねじを転造する管用テーパ
ーねじ転造用ヘッドにおいて、前記表蓋１１および裏蓋
１２にはそれぞれねじ転造用ローラ１６の軸２２を案内
する複数の長孔２３が放射状に形成され、前記ハウジン
グ１０の内側には表蓋１１および裏蓋１２に摺動可能に
接し、且つばね２９にて回転方向に付勢されたロータ１
４が設けられ、該ロータ１４には回動することにより前
記ねじ転造用ローラ１６の軸２２をハウジング１０の中
心から半径方向に移動させる複数の長孔２８が円周の接
線に対して斜めに形成され、前記裏蓋１２には被加工管
により押圧移動される移動部材１３と、該移動部材１３
により押圧されて回動し、且つ先端に前記ロータ１４に
設けられた溝３２に係合して該ロータ１４の回転を係止
するピン４４が設けられたねじ切上レバー１７が設けら
れてなり、被加工管の加工終了時に該被加工管の端部に
より移動部材１３が押圧され、それによりねじ切上レバ
ー１７が回動されて先端のピン４４がロータの溝３２か
ら離脱し、それによりロータ１４がばね２９の付勢力に
より回動し、斜めの長孔２８がねじ転造用ローラ１６の
軸２２をハウジング１０の中心から遠ざかる方向に移動
させることを特徴とする。According to the first aspect of the present invention, a plurality of thread rolling rollers 16 having a tapered peripheral surface equal to a desired taper gradient in a housing 10 comprising a front cover 11 and a back cover 12 are provided. Are arranged in a circumferential shape, and a tapered thread rolling head for a pipe that rolls a tapered thread on the outer periphery of the processed pipe by pushing the processed pipe between rollers for rolling while rotating the processed pipe. A plurality of long holes 23 for guiding the shaft 22 of the thread rolling roller 16 are formed in the cover 11 and the back cover 12 in a radial manner, and the front cover 11 and the back cover 12 are slidable inside the housing 10. And the rotor 1 urged in the rotational direction by a spring 29
The rotor 14 is provided with a plurality of long holes 28 that rotate to move the shaft 22 of the thread rolling roller 16 in the radial direction from the center of the housing 10 by rotating. A moving member 13 pressed and moved by a pipe to be processed on the back lid 12;
And a screw-up lever 17 provided with a pin 44 for engaging the groove 32 provided in the rotor 14 at its tip and locking the rotation of the rotor 14, When the processing of the pipe to be processed is completed, the moving member 13 is pressed by the end of the pipe to be processed, whereby the screw-up lever 17 is rotated, and the pin 44 at the tip is disengaged from the groove 32 of the rotor. Are rotated by the biasing force of a spring 29, and the oblique long hole 28 moves the shaft 22 of the thread rolling roller 16 in a direction away from the center of the housing 10.
【０００８】この構成により、ねじ加工が終了するとね
じ転造用ローラ１６が自動的に退避し、被加工材の取り
出しを極めて容易とした管用テーパねじ転造用ヘッドが
得られる。With this configuration, when the threading is completed, the thread rolling roller 16 is automatically retracted, and a tapered thread rolling head for pipes in which the workpiece can be easily removed is obtained.
【０００９】請求項２の発明は、前記ピン４４は偏心軸
４１に偏心して設けられ、該偏心軸４１を回動してピン
４４の位置を変えることによりねじ転造用ローラ１６の
初期位置を調整可能としたことを特徴とする。この構成
により被加工材に形成するねじのねじ径を変更すること
ができる。According to a second aspect of the present invention, the pin 44 is provided eccentrically to the eccentric shaft 41, and the initial position of the thread rolling roller 16 is changed by rotating the eccentric shaft 41 to change the position of the pin 44. It is characterized by being adjustable. With this configuration, the screw diameter of the screw formed on the workpiece can be changed.
【００１０】請求項３の発明は、前記移動部材１３とね
じ切上レバー１７との間には長さを調整可能なねじ切上
調整ねじ１３ａが設けられ、該ねじ切上調整ねじ１３ａ
によりねじ切上レバー１７の初期位置を調整することに
よりねじ切上時期を調整可能としたことを特徴とする。
この構成により、ロータの溝３２とねじ切上調整ねじ
（１３ａ）との係合深さを変え、ねじ切上時期を変更す
ることができる。According to a third aspect of the present invention, a screw-up adjusting screw 13a whose length is adjustable is provided between the moving member 13 and the screw-up lever 17.
By adjusting the initial position of the screw-up lever 17, the screw-up time can be adjusted.
With this configuration, the engagement depth between the groove 32 of the rotor and the screw-up adjusting screw (13a) can be changed, and the screw-up time can be changed.
【００１１】また請求項４の発明は、前記ロータ１４に
は、該ロータ１４を手動にて回動できる把手３０が設け
られていることを特徴とする。この構成によりロータ１
４をばね２９に抗して回動でき、ロータ１４をセット位
置にもっていくことができる。The invention according to a fourth aspect is characterized in that the rotor 14 is provided with a handle 30 which can rotate the rotor 14 manually. With this configuration, the rotor 1
4 can be rotated against the spring 29, and the rotor 14 can be brought to the set position.
【００１２】[0012]
【発明の実施の形態】図１乃至図４は本発明の実施の形
態を示す図で、図１は正面図、図２は図１のII−II線に
おける断面図、図３は後面図、図４は要部分解斜視図で
ある。各図において、１０はハウジング、１１，１２は
ハウジングを構成する表蓋及び裏蓋、１３は移動部材、
１４はローター、１５はねじ径変更ユニット、１６はね
じ転造用ローラ、１７はねじ切上げレバーである。1 to 4 show an embodiment of the present invention. FIG. 1 is a front view, FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1, FIG. FIG. 4 is an exploded perspective view of a main part. In each figure, 10 is a housing, 11 and 12 are a front cover and a back cover constituting the housing, 13 is a moving member,
14 is a rotor, 15 is a screw diameter changing unit, 16 is a roller for thread rolling, and 17 is a screw up lever.
【００１３】そして、ハウジング１０の表蓋１１及び裏
蓋１２はそれぞれ円板部と円筒部とよりなる底付き円筒
形をなし、外周に複数のボス１８が設けられ、該ボス１
８を介してねじ１９により結合される。また、該表蓋１
１の円板部の中央には被加工管の挿通される孔２０が形
成され、裏蓋１２の円板部の中央には移動部材１３を挿
通する孔２１が形成されている。また、表蓋１１と裏蓋
１２の円板部にはねじ転造用ローラ１６の軸２２を案内
する複数の長孔２３が円周上に所定の間隔で放射状に設
けられている。なお、符号１０ａ，１０ｂはねじ切り装
置への取付けアームである。The front cover 11 and the back cover 12 of the housing 10 each have a bottomed cylindrical shape having a disk portion and a cylindrical portion, and a plurality of bosses 18 are provided on the outer periphery.
It is connected by a screw 19 through 8. In addition, the front lid 1
A hole 20 through which a pipe to be processed is inserted is formed at the center of the disk portion 1, and a hole 21 through which the moving member 13 is inserted is formed at the center of the disk portion of the back cover 12. Further, a plurality of long holes 23 for guiding the shaft 22 of the thread rolling roller 16 are provided radially at predetermined intervals on the circumference of the disk portion of the front cover 11 and the back cover 12. Reference numerals 10a and 10b denote mounting arms to the threading device.
【００１４】また前記ローター１４は、円板部と円筒部
が一体に形成された第１ロータ部材２４と円板状の第２
ロータ部材２５とがねじ２６により結合されており、そ
れぞれの円板部はそれぞれ表蓋１１及び裏蓋１２に摺動
可能に接している。そして、この第１ロータ部材２４と
第２ロータ部材２５の円板部にはねじ転造用ローラ１６
の軸２２を軸受ブッシュ２７を介して支持し、且つ該軸
２２をハウジング１０の中心から半径方向に移動させる
複数の長孔２８が円周の接線に対して傾斜して設けられ
ている。The rotor 14 has a first rotor member 24 in which a disk portion and a cylindrical portion are integrally formed, and a disk-shaped second rotor member 24.
The rotor member 25 is connected to the front cover 11 and the back cover 12 so as to be slidable by screws 26, respectively. The disk portions of the first rotor member 24 and the second rotor member 25 are provided with the thread rolling rollers 16.
A plurality of long holes 28 that support the shaft 22 through a bearing bush 27 and move the shaft 22 in the radial direction from the center of the housing 10 are provided at an angle to the tangent to the circumference.
【００１５】また、第１ロータ部材２４と表蓋１１の接
する面には、ねじ転造用ローラ１６の位置が広がる方向
に回転するようにローター１４を付勢しているばね２９
が設けられている。更に該ロータ１４には、該ロータを
手動で回動できる把手３０が設けられ、ハウジング１０
には該把手３０の移動を妨げないようにスリット３１が
形成されている。また該ロータ１４には側面に後述する
ねじ径変更ユニットの偏心ピンが係合する溝３２が形成
されている。A spring 29 for urging the rotor 14 so as to rotate in a direction in which the position of the thread rolling roller 16 spreads is provided on a surface where the first rotor member 24 and the front cover 11 are in contact.
Is provided. Further, the rotor 14 is provided with a handle 30 for manually rotating the rotor.
Is formed with a slit 31 so as not to hinder the movement of the handle 30. A groove 32 is formed on the side surface of the rotor 14 to be engaged with an eccentric pin of a screw diameter changing unit described later.
【００１６】また、ねじ転造用ローラ１６は、所望のね
じの断面に対応した複数の環状溝を有し、且つ所望のテ
ーパー勾配に等しいテーパー周面を持っており、その複
数個がハウジングの中心軸線に対して所望のねじの有効
径リード角に対応する傾斜角度で傾斜し、且つその軸方
向位置を所定ピッチづつずらして前記ロータ１４および
表蓋，裏蓋１１，１２により支持されるようになってい
る。また、移動部材１３は裏蓋１２の孔２１に摺動可能
に支持されており、その後部中央にねじ切上調整ねじ１
３ａが固定されている。The thread rolling roller 16 has a plurality of annular grooves corresponding to a desired thread cross section, and has a tapered peripheral surface equal to a desired taper gradient. It is inclined at an inclination angle corresponding to the effective diameter lead angle of the desired screw with respect to the center axis, and its axial position is shifted by a predetermined pitch so as to be supported by the rotor 14 and the front and back lids 11 and 12. It has become. The moving member 13 is slidably supported in the hole 21 of the back cover 12 and has a screw-up adjusting screw 1
3a is fixed.
【００１７】また、裏蓋１２の外側の一端には支点３３
が設けられ、該支点３３にはハウジング１０の直径にほ
ぼ等しい長さのねじ切上げレバー１７が揺動自在に支持
され、且つトルクばね３４によりハウジング１０に近寄
る方向（図において反時計方向）に付勢されている。そ
して、該ねじ切上げレバー１７のほぼ中央には左右にピ
ン３５が植設された長孔３６が形成され、該長孔３６に
前記移動部材１３に連結したねじ切上げ調整ねじ１３ａ
に螺合したナット体３７が挿入され、該ナット体に形成
されている溝３７ａに前記ピン３５が係合している。A fulcrum 33 is provided at one end on the outside of the back cover 12.
The screw-up lever 17 having a length substantially equal to the diameter of the housing 10 is swingably supported at the fulcrum 33, and is attached to the housing 10 by a torque spring 34 in a direction (counterclockwise in the drawing). It is being rushed. At the approximate center of the screw-up lever 17, there is formed a long hole 36 in which pins 35 are implanted on the left and right, and a screw-up adjustment screw 13a connected to the moving member 13 in the long hole 36.
Is screwed into the nut body 37, and the pin 35 is engaged with the groove 37a formed in the nut body.
【００１８】なお３８はナット体３７を固定するロック
ナットである。また該レバー１７の他端にはフォーク部
３９が形成され、該フォーク部３９の左右には長孔３９
ａが穿設され、該フォーク部３９にはねじ径変更ユニッ
ト１５が設けられている。Reference numeral 38 denotes a lock nut for fixing the nut body 37. A fork 39 is formed at the other end of the lever 17, and a long hole 39 is formed on the left and right of the fork 39.
The fork 39 is provided with a screw diameter changing unit 15.
【００１９】ねじ径変更ユニット１５は、ねじ切上げレ
バー１７のフォーク部の長孔３９ａに係合するピン４０
ａを有し、且つ中央に軸受孔４２を有するブロック４０
と、該軸受孔４２に遊嵌した偏心軸４１とよりなり、該
偏心軸４１は裏蓋１２に設けられた軸受孔４２に遊嵌す
る軸部４３を有し、該軸部４３の端部には偏心ピン４４
が設けられている。また該偏心軸４１の他端にはつまみ
４５がねじ４６により固定されている。なお、偏心軸４
１はブロック４０との間に適度な回転抵抗を有するよう
にばね座金４７等が挿入されている。The screw diameter changing unit 15 is provided with a pin 40 for engaging with the long hole 39a of the fork portion of the screw up lever 17.
a having a and a bearing hole 42 in the center
And an eccentric shaft 41 loosely fitted in the bearing hole 42. The eccentric shaft 41 has a shaft portion 43 loosely fitted in a bearing hole 42 provided in the back cover 12, and an end of the shaft portion 43. Eccentric pin 44
Is provided. A knob 45 is fixed to the other end of the eccentric shaft 41 with a screw 46. The eccentric shaft 4
1 is provided with a spring washer 47 and the like so as to have an appropriate rotation resistance between itself and the block 40.
【００２０】そして、偏心ピン４４はロータ１４に設け
られた溝３２に係合している。この場合、溝３２は転造
ローラ１６がハウジング１０の中心に近寄り、ねじ転造
が可能となる位置にあるときに偏心ピン４４と係合する
ように設けられている。The eccentric pin 44 is engaged with the groove 32 provided in the rotor 14. In this case, the groove 32 is provided so as to engage with the eccentric pin 44 when the rolling roller 16 approaches the center of the housing 10 and is located at a position where thread rolling can be performed.
【００２１】このように構成された本実施の形態の作用
を図２，図４及び図５により説明する。先ず、本実施の
形態をねじ切り機の移動台に固定しておき、図４の如く
把手３０を図示なきばね２９に抗して反時計方向（矢印
Ａ方向）に回動し、ロータ１４の溝３２をねじ径変更ユ
ニット１５の偏心ピン４４に係合させ図２の状態にす
る。The operation of the embodiment constructed as described above will be described with reference to FIGS. 2, 4 and 5. First, the present embodiment is fixed to a moving table of a threading machine, and the handle 30 is rotated counterclockwise (in the direction of arrow A) against a spring 29 not shown in FIG. 32 is engaged with the eccentric pin 44 of the screw diameter changing unit 15 to make the state shown in FIG.
【００２２】この状態では図５（ａ）の如く、ねじ転造
用ローラ１６の軸２２は表蓋１１に放射状に設けられた
長孔２３と、ロータ１４に傾斜して設けられた長孔２８
とに案内されてハウジング１０の中心方向に移動し、ね
じ加工の可能な状態となっている。この状態で図２にお
いて左側より表蓋１１の孔２０から、ねじ切り機のチャ
ックに咬えられた被加工管（図示省略）を回転させなが
ら押し込むと、該被加工管はねじ転造用ローラ１６によ
りねじが転造されながら右方（矢印Ｂ方向）へ進行す
る。In this state, as shown in FIG. 5A, the shaft 22 of the thread rolling roller 16 has a long hole 23 provided radially on the front cover 11 and a long hole 28 provided obliquely on the rotor 14.
, And moves toward the center of the housing 10 so that screw processing is possible. In this state, when a work tube (not shown) bitten by the chuck of the threading machine is pushed into the hole 20 of the front cover 11 from the left side in FIG. 2 while rotating, the work tube is turned into the thread rolling roller 16. As a result, the screw advances to the right (in the direction of arrow B) while being rolled.
【００２３】そして加工の終点に近づくと被加工管はそ
の先端で移動部材１３を押圧し該移動部材１３を右方に
移動させる。移動部材１３が右方に移動するとねじ切上
げ調整ねじ１３ａを介してねじ切上げレバー１７が時計
方向（矢印Ｃ方向）に回動する。その結果ねじ切上げレ
バー１７の先端のねじ径変更ユニット１５の偏心ピン４
４はロータ１４の溝３２から離脱し、ロータ１４の係止
を解放する。これによりロータ１４は、ばね２９により
図４において反時計方向（矢印Ａと反対方向）に回動す
る。Then, when approaching the end point of the processing, the pipe to be processed presses the moving member 13 at its tip and moves the moving member 13 to the right. When the moving member 13 moves to the right, the screw raising lever 17 rotates clockwise (direction of arrow C) via the screw raising adjusting screw 13a. As a result, the eccentric pin 4 of the screw diameter changing unit 15 at the tip of the screw up lever 17
4 is disengaged from the groove 32 of the rotor 14 to release the locking of the rotor 14. This causes the rotor 14 to rotate in the counterclockwise direction (the direction opposite to the arrow A) in FIG.
【００２４】そして表蓋１１および裏蓋１２に設けられ
た長孔２３により放射方向にのみ移動が拘束されている
転造ローラ１６の軸２２は図５（ｂ）に示すようにロー
ター１４に傾斜して設けられた長孔２８の斜面により押
し上げられてハウジング１０の中心から遠ざかる方向に
移動する。このようにしてねじ転造用ローラ１６の位置
が放射方向に広がることにより被加工管との接触がなく
なり、被加工管は回転させずに本転造用ヘッドから引き
抜くことができる。The shaft 22 of the rolling roller 16 whose movement is restricted only in the radial direction by the elongated holes 23 provided in the front cover 11 and the back cover 12 is inclined to the rotor 14 as shown in FIG. The housing 10 is pushed up by the inclined surface of the elongated hole 28 and moved away from the center of the housing 10. In this way, the position of the thread rolling roller 16 is radially widened, so that the thread is not in contact with the pipe to be processed, and the pipe to be processed can be pulled out from the main rolling head without rotating.
【００２５】次に、ねじ径変更ユニット３２の作用につ
いて図４により説明する。図４において、つまみ４５を
回動して偏心ピン４４の位置を変更することにより加工
するねじ径を調節することができる。即ち、図示の状態
から、つまみ４５を回動して偏心ピン４４を右方に位置
させれば、ロータ１４は時計方向に回動するため、ロー
タ１４の長孔２８の傾斜によりロータ１４の中心より離
れる方向に移動する。従って各転造ローラは放射状に広
がり、加工するねじの径を大とすることができる。逆に
偏心ピン４４を左方に位置させれば、加工するねじの径
を小さくすることができる。Next, the operation of the screw diameter changing unit 32 will be described with reference to FIG. In FIG. 4, the diameter of the screw to be processed can be adjusted by rotating the knob 45 to change the position of the eccentric pin 44. That is, if the knob 45 is rotated from the state shown in the figure to position the eccentric pin 44 to the right, the rotor 14 rotates clockwise, and the center of the rotor 14 is tilted by the inclination of the long hole 28 of the rotor 14. Move further away. Therefore, each rolling roller spreads radially, and the diameter of the screw to be processed can be increased. Conversely, if the eccentric pin 44 is located to the left, the diameter of the screw to be machined can be reduced.
【００２６】次に、ねじ切上げ時期の調整ついて図２に
より説明する。図２において、ナット体３７をロックナ
ット３８を緩めて左に回転させれば移動部材１３とナッ
ト体３７との間隔は広がりねじ切上レバー１７を時計方
向（矢印Ｃ方向）に回動させ、ねじ径変更ユニット１５
を右方に移動させる。これによりロータ１４の溝３２に
対する偏心ピン４４の係合は浅くなる。従って被加工管
により移動部材１３が押圧された時、早くロータの溝３
２と偏心ピン４４との係合がはずれ、ねじの切上げの時
期は早くなる。このようにしてねじの切上げ時期を調整
することができる。Next, adjustment of the screw-up time will be described with reference to FIG. In FIG. 2, if the nut body 37 is rotated to the left by loosening the lock nut 38, the distance between the moving member 13 and the nut body 37 is increased, and the screw pull-up lever 17 is rotated clockwise (in the direction of arrow C). Diameter change unit 15
To the right. Thereby, the engagement of the eccentric pin 44 with the groove 32 of the rotor 14 becomes shallower. Therefore, when the moving member 13 is pressed by the pipe to be processed, the groove 3
The engagement between the eccentric pin 44 and the eccentric pin 44 is released, and the timing of screw up is advanced. In this way, the timing for raising the screw can be adjusted.
【００２７】[0027]
【発明の効果】本発明の管用テーパーねじ転造用ヘッド
に依れば、被加工管の端部で押圧される移動部材及びね
じ切上レバーを介してねじ転造用ローラを半径方向に拡
大移動させる自動ねじ切上機構を設けたことによりねじ
加工終了後の被加工管の取出しを容易とすることがで
き、ねじ加工効率の向上に寄与することができる。また
ねじ切上機構ににねじ径変更ユニットを設けたことによ
り被加工管のねじ径を自由に変更することが可能とな
る。According to the taper thread rolling head for pipes of the present invention, the roller for thread rolling is radially enlarged by the moving member pressed at the end of the pipe to be processed and the threading lever. The provision of the automatic screw-up mechanism that makes it possible to easily remove the pipe to be processed after the completion of the threading can contribute to the improvement of the threading efficiency. In addition, by providing the screw diameter changing unit in the screw cutting mechanism, the screw diameter of the pipe to be processed can be freely changed.
【図１】本発明の実施の形態を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】図１のII−II線における断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】本発明の実施の形態を示す後面図である。FIG. 3 is a rear view showing the embodiment of the present invention.
【図４】本発明の実施の形態の要部を示す分解斜視図で
ある。FIG. 4 is an exploded perspective view showing a main part of the embodiment of the present invention.
【図５】本発明の実施の形態の作用を説明するための図
である。FIG. 5 is a diagram for explaining the operation of the embodiment of the present invention.
【図６】従来の鋼管を継手を用いて接続する接続方法を
示す図である。FIG. 6 is a view showing a connection method for connecting a conventional steel pipe using a joint.
【図７】従来のテーパーねじ転造ヘッドを示す断面図で
ある。FIG. 7 is a sectional view showing a conventional tapered thread rolling head.
１０…ハウジング １１…表蓋 １２…裏蓋 １３…移動部材 １３ａ…ねじ切上調整ねじ １４…ロータ １５…ねじ径変更ユニット １６…ねじ転造用ローラ １７…ねじ切上レバー １８…ボス １９，２６，４６…ねじ ２０，２１…孔 ２２…軸 ２３，２８，３６…長孔 ２４…第１ロータ部材 ２５…第２ロータ部材 ２７…軸受ブッシュ ２９…ばね ３０…把手 ３１…スリット ３２…溝 ３３…支点 ３４…トルクばね ３５，４０ａ…ピン ３７…ナット体 ３８…ロックナット ３９…フォーク部 ４０…ブロック ４１…偏心軸 ４２…軸受孔 ４３…軸部 ４４…偏心ピン ４５…つまみ DESCRIPTION OF SYMBOLS 10 ... Housing 11 ... Front cover 12 ... Back cover 13 ... Moving member 13a ... Screw cutting adjustment screw 14 ... Rotor 15 ... Screw diameter changing unit 16 ... Screw rolling roller 17 ... Screw cutting lever 18 ... Boss 19, 26, 46 ... Screw 20,21 ... Hole 22 ... Shaft 23,28,36 ... Long hole 24 ... First rotor member 25 ... Second rotor member 27 ... Bearing bush 29 ... Spring 30 ... Handle 31 ... Slit 32 ... Groove 33 ... Support point 34 ... Torque springs 35, 40a ... Pins 37 ... Nut bodies 38 ... Lock nuts 39 ... Fork parts 40 ... Blocks 41 ... Eccentric shafts 42 ... Bearing holes 43 ... Shaft parts 44 ... Eccentric pins 45 ... Knobs
Claims (4)
ハウジング（１０）内に所望のテーパー勾配に等しいテ
ーパー周面を持つ複数個のねじ転造用ローラ（１６）が
円周状に配置され、被加工管を回転させながら上記ねじ
転造用ローラ間に押し込むことにより該被加工管の外周
にテーパーねじを転造する管用テーパーねじ転造用ヘッ
ドにおいて、 前記表蓋（１１）および裏蓋（１２）にはそれぞれねじ
転造用ローラ（１６）の軸（２２）を案内する複数の長
孔（２３）が放射状に形成され、 前記ハウジング（１０）の内側には表蓋（１１）および
裏蓋（１２）に摺動可能に接し、且つばね（２９）にて
回転方向に付勢されたロータ（１４）が設けられ、該ロ
ータ（１４）には回動することにより前記ねじ転造用ロ
ーラ（１６）の軸（２２）をハウジング（１０）の中心
から半径方向に移動させる複数の長孔（２８）が円周の
接線に対して斜めに形成され、 前記裏蓋（１２）には被加工管により押圧移動される移
動部材（１３）と、該移動部材（１３）により押圧され
て回動し、且つ先端に前記ロータ（１４）に設けられた
溝（３２）に係合して該ロータ（１４）の回転を係止す
るピン（４４）が設けられたねじ切上レバー（１７）が
設けられてなり、 被加工管の加工終了時に該被加工管の端部により移動部
材（１３）が押圧され、それによりねじ切上げレバー
（１７）が回動されて先端のピン（４４）が前記ロータ
の溝（３２）から離脱し、それによりロータ（１４）が
ばね（２９）の付勢力により回動し、斜めの長孔（２
８）がねじ転造用ローラ（１６）の軸（２２）をハウジ
ング（１０）の中心から遠ざかる方向に移動させること
を特徴とする管用テーパーねじ転造用ヘッド。A plurality of thread rolling rollers (16) having a tapered peripheral surface equal to a desired taper gradient are provided in a housing (10) comprising a front cover (11) and a back cover (12). A tapered thread rolling head for pipes, which is arranged in a shape and rolls a tapered screw on the outer periphery of the pipe to be processed by pushing the pipe to be processed between the rollers for rolling while rotating the pipe, ) And a back cover (12) are formed with a plurality of radial holes (23) for guiding a shaft (22) of a thread rolling roller (16), respectively, and a front cover is provided inside the housing (10). A rotor (14) slidably in contact with (11) and the back cover (12) and urged in the rotational direction by a spring (29) is provided. Shaft (22) of the thread rolling roller (16) A plurality of elongated holes (28) for moving in a radial direction from the center of the housing (10) are formed obliquely with respect to a tangent line of the circumference, and the back cover (12) is a moving member pressed and moved by a pipe to be processed. (13), it is rotated by being pressed by the moving member (13), and is engaged with a groove (32) provided at the tip thereof in the rotor (14) to stop the rotation of the rotor (14). A screw-up lever (17) provided with a pin (44) to be moved, and at the end of the processing of the pipe to be processed, the moving member (13) is pressed by the end of the pipe to be processed, whereby the screw-up lever (17) is rotated so that the pin (44) at the tip is disengaged from the groove (32) of the rotor, whereby the rotor (14) is rotated by the urging force of the spring (29), and the oblong slot ( 2
8) The taper thread rolling head for pipes, wherein the shaft (22) of the roller (16) is moved in a direction away from the center of the housing (10).
心して設けられ、該偏心軸（４１）を回動してピン（４
４）の位置を変えることによりねじ転造用ローラ（１
６）の初期位置を調整可能としたことを特徴とする請求
項１の管用テーパーねじ転造用ヘッド。2. The pin (44) is eccentrically provided on an eccentric shaft (41), and the eccentric shaft (41) is rotated to rotate the pin (4).
By changing the position of 4), the roller (1)
2. The tapered thread rolling head for a pipe according to claim 1, wherein the initial position of (6) is adjustable.
（１７）との間には長さを調整可能なねじ切上調整ねじ
（１３ａ）が設けられ、該ねじ切上調整ねじ（１３ａ）
によりねじ切上レバー（１７）の初期位置を調整するこ
とによりねじ切上時期を調整可能としたことを特徴とす
る請求項１の管用テーパーねじ転造用ヘッド。3. A screw-up adjusting screw (13a) whose length is adjustable is provided between the moving member (13) and the screw-up lever (17), and the screw-up adjusting screw (13a) is provided.
2. A tapered thread rolling head for a pipe according to claim 1, wherein the thread raising timing can be adjusted by adjusting the initial position of the thread raising lever (17).
４）を手動にて回動できる把手（３０）が設けられてい
ることを特徴とする請求項１の管用テーパーねじ転造用
ヘッド。4. The rotor (1) is provided with the rotor (1).
2. A tapered thread rolling head for a pipe according to claim 1, further comprising a handle (30) capable of manually rotating said 4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04792097A JP3888724B2 (en) | 1997-03-03 | 1997-03-03 | Tapered thread rolling head for pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04792097A JP3888724B2 (en) | 1997-03-03 | 1997-03-03 | Tapered thread rolling head for pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10244340A true JPH10244340A (en) | 1998-09-14 |
| JP3888724B2 JP3888724B2 (en) | 2007-03-07 |
Family
ID=12788815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04792097A Expired - Lifetime JP3888724B2 (en) | 1997-03-03 | 1997-03-03 | Tapered thread rolling head for pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3888724B2 (en) |
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1997
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| WO2014161447A1 (en) | 2013-03-31 | 2014-10-09 | 上海泛华紧固***有限公司 | Method for rolling external pipe threads, rolling head and device thereof |
| US10399140B2 (en) | 2013-03-31 | 2019-09-03 | Shanghai Pan-China Fastening System Co., Ltd. | Method for rolling external pipe threads, rolling head and device thereof |
| WO2018099403A1 (en) * | 2016-11-29 | 2018-06-07 | 上海泛华紧固***有限公司 | Method and apparatus for stock rolling feeding, diameter reduction, alignment and derusting and product thereof |
| WO2018108105A1 (en) | 2016-12-13 | 2018-06-21 | 上海泛华紧固***有限公司 | Rolled pipe thread processing method, rolling head, apparatus, module, production line, and product thereof |
| CN108907046A (en) * | 2016-12-13 | 2018-11-30 | 上海泛华紧固***有限公司 | A kind of rolled tube Screw thread process method, milled head, equipment, module, production line and products thereof |
| US11273483B2 (en) | 2016-12-13 | 2022-03-15 | Shanghai Pan-China Fastening System Co., Ltd. | Threading method, rolling head, apparatus, module and production line for pipe thread, and products thereof |
| CN117505745A (en) * | 2024-01-04 | 2024-02-06 | 江苏中动机械科技有限公司 | Automatic expansion machine head of thread rolling machine |
| CN117505745B (en) * | 2024-01-04 | 2024-03-12 | 江苏中动机械科技有限公司 | Automatic expansion machine head of thread rolling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3888724B2 (en) | 2007-03-07 |
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