JP3666742B2 - Holder for threaded joint pipe - Google Patents

Holder for threaded joint pipe Download PDF

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Publication number
JP3666742B2
JP3666742B2 JP2001231158A JP2001231158A JP3666742B2 JP 3666742 B2 JP3666742 B2 JP 3666742B2 JP 2001231158 A JP2001231158 A JP 2001231158A JP 2001231158 A JP2001231158 A JP 2001231158A JP 3666742 B2 JP3666742 B2 JP 3666742B2
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JP
Japan
Prior art keywords
holder
screw hole
joint pipe
main body
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.)
Expired - Fee Related
Application number
JP2001231158A
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Japanese (ja)
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JP2003039241A (en
Inventor
和明 吉岡
Original Assignee
和明 吉岡
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Filing date
Publication date
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Priority to JP2001231158A priority Critical patent/JP3666742B2/en
Publication of JP2003039241A publication Critical patent/JP2003039241A/en
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Publication of JP3666742B2 publication Critical patent/JP3666742B2/en
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Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
この発明は、水道管又はガス管の配管工事に際し、これらの管を接続する継ぎ手として使用される継ぎ手管の端部に所要のねじを切削する時に適用するねじ切り用ホルダーに関するものである。
【0002】
【従来の技術】
図4は従来の継ぎ手管ねじ切り用ホルダーを一部断面して示した側面図である。
図において、20はホルダー本体であり、コ字状の断面形状をなし、前壁の中心部に被加工管の取り付けねじ孔21を、また、このねじ孔21に連通する大径ねじ孔22を設けている。23は上記大径ねじ孔22に螺嵌してホルダー本体20を支持する支持体であり、上記ホルダー本体20の大径ねじ孔22と螺合する頭部24と、ねじ切り機のチャックに挾着される軸部25とによって構成されている。なお、図中Aは被加工物である継ぎ手管であり、B,Cはその両端のねじ部を示す。
【0003】
次に、ねじの切削動作について説明する。ホルダーの軸部25をねじ切り機のチャック26(約3cm巾)で挾着した状態で、ホルダー本体20を支持し、その小径ねじ孔21に、既に一端にねじBを切削した所定長さの継ぎ手管Aをねじ込んでセットする。ここにおいて、他端部Cにカッター27でねじ切りを行うのであるが、この場合、継ぎ手管Aの一端面は支持体23の前端面に当接しており、軸方向に作用する力は主としてこの当接部分で支承される。
【0004】
【発明が解決しようとする課題】
管接続用の継ぎ手管は、その一端に所要長さのねじ切りを行う場合、継ぎ手管を直接ねじ切り機のチャックで挾着保持すればよいのであるが、他端にも同様にねじ切りを行うに際しては、既に成形したねじ部の損傷を避けるために特定のホルダーをチャック側にセットしなければならない。
そこで従来は、図4に示すホルダー本体20と支持体23から成るホルダーが適用されていたが、これではホルダー本体20がねじ切り機のチャック26の前面に突出することになり、その突出量(約6cm)だけねじ切り機の刃物台のストロークが図4のLaの範囲に制限されることになり、被加工継ぎ手管の長さが限定されるという問題点があった。
即ち、例えば、具体例として、6.5〜10.0cm長のものを加工することができないという不具合が生じる。
【0005】
この発明は、上記のような問題点を解決するためになされたもので、ねじ切り機の刃物台のストロークを最大限に活用してねじ切りを行うことができる継ぎ手管のねじ切り用ホルダーを提供することを目的としている。
【0006】
【課題を解決するための手段】
この発明の請求項1に係る継ぎ手管ねじ切り用ホルダーは、前面壁部の中央に継ぎ手管を螺嵌するセットねじ孔を設け、このセットねじ孔に連通しこのセットねじ孔より大径の貫通ねじ孔を設けた筒状の主体と、この主体の上記貫通ねじ孔の後方から螺嵌し前端に上記セットねじ孔に向って開口する角穴を形成したねじ軸とから成ることによって構成されたものである。
【0007】
この発明の請求項2に係る継ぎ手管ねじ切り用ホルダーは、ホルダーの主体は筒状であって、ねじ切り機のチャック内に全体を挿入した状態で挾着支持される構造で、この主体内で螺合するねじ部によって切削時の軸方向の力が支承され、加工後の継ぎ手管とねじ軸との圧接固定は、ねじ軸を後退動作させることで離脱するように構成したものである。
【0008】
【発明の実施の形態】
実施の形態1.
以下、この発明の実施形態を図に基づいて説明する。
図1はホルダー全体の側面図、図2(a)は筒状の主体の縦断面図、図2(b)はねじ軸の頭部を断面して示した側面図である。
図1,図2において、1はホルダー、2は筒状の主体、3は筒状の主体2の前面壁部4の中央に設けたセットねじ孔、5はこのセットねじ孔3に連通しこのセットねじ孔より大径の貫通ねじ孔であり、本実施形態では、逆ねじ孔に形成されている。6は外周面に上記貫通ねじ孔5と螺合するねじ7を設けたねじ軸、8はこのねじ軸6の前端面6aの中央部に上記セットねじ孔3に向って開口する穴で、本実施形態では6角穴としてある。
【0009】
本発明は上記のような構成であり、ねじ軸6は筒状の主体2に設けた貫通ねじ孔5とほぼ長さが同じで、セットねじ孔3側から図3に示すように6角棒Dを挿入してその先端を6角穴8に嵌入し、上記6角棒Dを介してねじ軸6を回転し進退させるように構成されている。そうして、普段は図1に示す如くねじ軸6は貫通ねじ孔5内に収納され、その先端は筒状の主体2の前面壁部4の内面4aに当接している。
【0010】
ここで、図3は継ぎ手管Aをセットした状態を一部断面して示す側面図であり、筒状の主体2をねじ切り機のチャック9内に挿入し、その前面壁部4の前面をチャックの前面とほぼ一致させた状態で挾着保持する。
次に、被加工継ぎ手管Aの既に切られている一端ねじ部Bをセットねじ孔3に螺嵌してセットし、他端にねじ部Cを切削するのである。そして、この時の圧力は長いねじ軸6と主体2の貫通ねじ孔5との螺合面で支承される。切削が完了した時点では、軸方向に伝播する切削圧や熱作用によってねじ部Bの端面はねじ軸6の前端面6aに圧接固定されているが、長い6角棒Dを継ぎ手管Aの外端から挿入し、その先端を6角穴8に嵌入して、ねじ軸6を回転して後退動作させることによって強固な圧接は解離され、継ぎ手管Aを簡単に抜き取ることができる。なお、長い6角棒Dは、スパナ等の工具を用いて回動させればよい。
この発明によれば、図3に示す如く刃物台のストロークがねじ切り機に与えられた当初のストロークLだけ保証される。即ち、従来困難であった7〜10cm長のものでも自由に切削できる。
【0011】
【発明の効果】
この発明の請求項1に係る継ぎ手管ねじ切り用ホルダーによれば、前面壁部の中央に継ぎ手管を螺嵌するセットねじ孔を設け、このセットねじ孔に連通するそれより大径の貫通ねじ孔を設けた筒状の主体と、この主体の上記貫通ねじ孔の後方から螺嵌し前端に上記セットねじ孔に向って開口する角穴を形成したねじ軸とから成ることによって構成しているので、上記筒状の主体をねじ切り機のチャックに装着したとき、チャックの前面に突出する部分がほとんど無く、刃物台のストロークが制限されないので、継ぎ手管の長さが限定されず、ねじ切り機の機能が完全に活かされる。
【0012】
この発明の請求項2に係る継ぎ手管ねじ切り用ホルダーによれば、ホルダーの主体は筒状であって、ねじ切り機のチャック内に全体を挿入した状態で挾着支持される構造で、この主体内で螺合するねじ部によって切削時の軸方向の力が支承され、加工後の継ぎ手管とねじ軸との圧接固定は、ねじ軸を後退動作させることで離脱するように構成しているので、ホルダー全体が小型化され、安価に提供される。
なお、切削後はねじ軸を外部から操作して後退させることによって継ぎ手管を取外すことができる等の機能があり、配管現場でのねじ切り機に適用するホルダーとして優れた効果を発揮する。
【図面の簡単な説明】
【図1】 この発明の実施の形態1による継ぎ手管ねじ切り用ホルダー全体の側面図である。
【図2】 図1における筒状の主体の縦断面図(a)と、ねじ軸の頭部を断面して示した側面図(b)である。
【図3】 継ぎ手管をセットした状態を一部断面して示す側面図である。
【図4】 従来の継ぎ手管ねじ切り用ホルダーの構成を一部断面して示した側面図である。
【符号の説明】
1 ホルダー、2 筒状の主体、3 セットねじ孔、4 前面壁部、
5 貫通ねじ孔、6 ねじ軸、8 角穴。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thread cutting holder that is applied when a required screw is cut at an end of a joint pipe used as a joint for connecting the water pipe or gas pipe.
[0002]
[Prior art]
FIG. 4 is a side view showing a conventional joint tube threading holder in a partially sectional view.
In the figure, reference numeral 20 denotes a holder body, which has a U-shaped cross-sectional shape, and has an attachment screw hole 21 of a pipe to be processed at the center of the front wall, and a large-diameter screw hole 22 communicating with the screw hole 21. Provided. Reference numeral 23 denotes a support that is screwed into the large-diameter screw hole 22 to support the holder main body 20, and is attached to the head 24 that is screwed into the large-diameter screw hole 22 of the holder main body 20 and the chuck of the screw cutter. The shaft portion 25 is formed. In the figure, A is a joint pipe which is a workpiece, and B and C indicate screw portions at both ends thereof.
[0003]
Next, the screw cutting operation will be described. In a state in which the shaft portion 25 of the holder is clamped by a chuck 26 (about 3 cm wide) of a threading machine, the holder body 20 is supported, and a joint having a predetermined length in which a screw B is already cut into one end of the small diameter screw hole 21. Screw tube A and set. Here, the other end C is threaded by the cutter 27. In this case, one end face of the joint pipe A is in contact with the front end face of the support 23, and the force acting in the axial direction is mainly applied to this end face. It is supported at the contact part.
[0004]
[Problems to be solved by the invention]
When connecting a joint pipe for pipe connection to one end of a thread of the required length, the joint pipe may be directly clamped and held by the chuck of the threading machine. In order to avoid damage to the already formed threaded part, a specific holder must be set on the chuck side.
Conventionally, the holder comprising the holder body 20 and the support body 23 shown in FIG. 4 has been applied. However, in this case, the holder body 20 protrudes to the front surface of the chuck 26 of the screw cutter, and the protrusion amount (about approximately 6 cm), the stroke of the tool post of the thread cutting machine is limited to the range of La in FIG. 4, and there is a problem that the length of the joint pipe to be processed is limited.
That is, for example, as a specific example, there is a problem that a product having a length of 6.5 to 10.0 cm cannot be processed.
[0005]
The present invention has been made to solve the above-described problems, and provides a threaded holder for a joint pipe capable of performing threading by making the most of the stroke of a tool post of a threading machine. It is an object.
[0006]
[Means for Solving the Problems]
The joint pipe threading holder according to claim 1 of the invention, a set screw hole screwed a joint tube to the center of the front wall portion is provided, threaded through a larger diameter than the set screw hole communicating Sico this set screw hole A cylindrical main body provided with a hole, and a screw shaft that is screwed from behind the through screw hole of the main body and has a square hole that opens toward the set screw hole at the front end. It is.
[0007]
The holder for threaded joint pipe according to claim 2 of the present invention has a cylindrical main body, and is supported by being clamped and supported in a state where the holder is entirely inserted into the chuck of the threading machine. The axial force at the time of cutting is supported by the screw portion to be joined, and the press-fitting and fixing between the joint pipe and the screw shaft after machining is configured to be separated by retreating the screw shaft.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a side view of the entire holder, FIG. 2 (a) is a longitudinal sectional view of a cylindrical main body, and FIG. 2 (b) is a side view showing a cross section of the head of a screw shaft.
1 and 2, 1 is the holder 2 is tubular metallic, 3 set screw hole provided in the center of the front wall portion 4 of the tubular metallic 2, 5 communicating Sico this set screw hole 3 This is a through screw hole having a diameter larger than that of the set screw hole , and is formed in a reverse screw hole in this embodiment. 6 is a screw shaft provided with a screw 7 screwed to the through screw hole 5 on the outer peripheral surface, and 8 is a hole opened toward the set screw hole 3 at the center of the front end surface 6a of the screw shaft 6. In the embodiment, it is a hexagonal hole.
[0009]
The present invention is configured as described above, and the screw shaft 6 has substantially the same length as the through screw hole 5 provided in the cylindrical main body 2 and is a hexagonal bar as shown in FIG. 3 from the set screw hole 3 side. D is inserted, the tip is inserted into the hexagonal hole 8, and the screw shaft 6 is rotated and advanced and retracted via the hexagonal bar D. Thus, usually, as shown in FIG. 1, the screw shaft 6 is accommodated in the through screw hole 5, and the tip thereof is in contact with the inner surface 4 a of the front wall portion 4 of the cylindrical main body 2.
[0010]
Here, FIG. 3 is a side view showing a state in which the joint pipe A is set in a partial cross section. The cylindrical main body 2 is inserted into the chuck 9 of the threading machine, and the front surface of the front wall portion 4 is chucked. Hold it tightly in a state where it almost coincides with the front surface.
Next, the one end threaded portion B of the joint pipe A to be processed already cut is screwed into the set screw hole 3 and set, and the threaded portion C is cut at the other end. And the pressure at this time is supported by the screwing surface of the long screw shaft 6 and the through screw hole 5 of the main body 2. When the cutting is completed, the end surface of the threaded portion B is pressed and fixed to the front end surface 6a of the screw shaft 6 by the cutting pressure or thermal action that propagates in the axial direction, but the long hexagonal rod D is attached to the outside of the joint pipe A. By inserting from the end, inserting the tip into the hexagonal hole 8, and rotating the screw shaft 6 to move backward, the strong pressure contact is dissociated, and the joint pipe A can be easily extracted. The long hexagonal bar D may be rotated using a tool such as a spanner.
According to the present invention, the stroke of the tool post is guaranteed only by the initial stroke L given to the threading machine, as shown in FIG. That is, even those having a length of 7 to 10 cm, which has conventionally been difficult, can be freely cut.
[0011]
【The invention's effect】
According to the joint pipe threading holder according to claim 1 of the present invention, a set screw hole for screwing the joint pipe is provided at the center of the front wall portion, and a through screw hole having a larger diameter than that connected to the set screw hole A cylindrical main body provided with a screw shaft from the rear of the through screw hole of the main body, and a screw shaft formed with a square hole that opens toward the set screw hole at the front end. When the above cylindrical main body is mounted on the chuck of the threading machine, there is almost no protruding part on the front surface of the chuck, and the stroke of the tool post is not limited, so the length of the joint pipe is not limited, and the function of the threading machine Is fully utilized.
[0012]
According to the holder for threaded joint pipe according to claim 2 of the present invention, the main body of the holder is cylindrical, and has a structure in which the entire body is inserted and inserted into the chuck of the threading machine, and the inside of the main body. Since the axial force at the time of cutting is supported by the threaded portion that is screwed in, the pressure contact fixing between the joint pipe after processing and the screw shaft is configured to be released by retreating the screw shaft. The entire holder is reduced in size and provided at low cost.
In addition, after cutting, there is a function such that the joint pipe can be removed by operating the screw shaft from the outside and retreating, so that it exhibits an excellent effect as a holder applied to a threading machine on the piping site.
[Brief description of the drawings]
FIG. 1 is a side view of an entire joint pipe threading holder according to Embodiment 1 of the present invention;
2 is a longitudinal sectional view (a) of a cylindrical main body in FIG. 1 and a side view (b) showing a cross section of a head portion of a screw shaft.
FIG. 3 is a side view showing a state in which a joint pipe is set in a partial cross section.
FIG. 4 is a side view showing a partial cross-sectional view of the structure of a conventional joint pipe threading holder.
[Explanation of symbols]
1 holder, 2 cylindrical body, 3 set screw holes, 4 front wall,
5 through screw holes, 6 screw shafts, octagonal holes.

Claims (2)

前面壁部の中央に継ぎ手管を螺嵌するセットねじ孔を設け、このセットねじ孔に連通し該セットねじ孔より大径の貫通ねじ孔を設けた筒状の主体と、この主体の上記貫通ねじ孔の後方から螺嵌し前端に上記セットねじ孔に向って開口する角穴を形成したねじ軸とから成ることを特徴とする継ぎ手管ねじ切り用ホルダー。A set screw hole screwed a joint tube to the center of the front wall portion is provided, and the metallic tubular having a threaded through-hole having a larger diameter than the set screw hole and communicating with the set screw hole, the through the principal A joint pipe threading holder comprising: a screw shaft screwed from the rear of the screw hole and having a square shaft formed at the front end thereof opening toward the set screw hole . ホルダーの主体は筒状であって、ねじ切り機のチャック内に全体を挿入した状態で挾着支持される構造で、この主体内で螺合するねじ部によって切削時の軸方向の力が支承され、加工後の継ぎ手管とねじ軸との圧接固定はねじ軸を後退動作させることで離脱するように構成したことを特徴とする請求項1に記載の継ぎ手管ねじ切り用ホルダー。  The main body of the holder is cylindrical and is supported by being fixedly inserted into the chuck of the threading machine, and the axial force at the time of cutting is supported by the threaded portion screwed in this main body. 2. The holder for threading a joint pipe according to claim 1, wherein the press-fitting and fixing of the joint pipe after processing and the screw shaft are separated by retreating the screw shaft.
JP2001231158A 2001-07-31 2001-07-31 Holder for threaded joint pipe Expired - Fee Related JP3666742B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001231158A JP3666742B2 (en) 2001-07-31 2001-07-31 Holder for threaded joint pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001231158A JP3666742B2 (en) 2001-07-31 2001-07-31 Holder for threaded joint pipe

Publications (2)

Publication Number Publication Date
JP2003039241A JP2003039241A (en) 2003-02-12
JP3666742B2 true JP3666742B2 (en) 2005-06-29

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Family Applications (1)

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JP2001231158A Expired - Fee Related JP3666742B2 (en) 2001-07-31 2001-07-31 Holder for threaded joint pipe

Country Status (1)

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