JPH07116742A - Device for manufacturing tube with groove on inner surface - Google Patents

Device for manufacturing tube with groove on inner surface

Info

Publication number
JPH07116742A
JPH07116742A JP3788294A JP3788294A JPH07116742A JP H07116742 A JPH07116742 A JP H07116742A JP 3788294 A JP3788294 A JP 3788294A JP 3788294 A JP3788294 A JP 3788294A JP H07116742 A JPH07116742 A JP H07116742A
Authority
JP
Japan
Prior art keywords
processed
rolls
pipe
rotary head
manufacturing apparatus
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
Application number
JP3788294A
Other languages
Japanese (ja)
Other versions
JP3269244B2 (en
Inventor
Yoshio Suzuki
喜夫 鈴木
Manabu Kagawa
学 香川
Kenji Yokomizo
健治 横溝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP03788294A priority Critical patent/JP3269244B2/en
Publication of JPH07116742A publication Critical patent/JPH07116742A/en
Application granted granted Critical
Publication of JP3269244B2 publication Critical patent/JP3269244B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To facilitate the working of a small diameter tube and the examination of a device by directly sustaining the thrust load to be generated in working the groove by a rotary head through a working roll. CONSTITUTION:A plurality of back-up rolls which are supported by shafts 3 and rotated while being revolved on the circular orbit are provided on a rotary head 2 arranged on the outer circumferential part of a tube 1 to be worked. In addition, a plurality of working rolls 5 are brought into external contact with the back-up rolls 4 on the inner side, and a roll end part 5A is supported by the rotary head 2 in a point-contact manner, and arranged in a rotating manner. The working rolls 5 are subjected to the rotating force of the back-up rolls 4 to be rotated and revolved and the diameter of the part to be worked of the tube 1 to be worked is reduced. The tube 1 to be worked is advanced in the axial direction in association with this reduction of the diameter, and a floating plug 6 is rotated to form a groove 11 in the inner surface. The thrust load to be generated on the working rolls 5 is sustained by the rotary head 2 from the roll end part 5A without using the thrust bearing.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は内面溝付管製造装置に関
し、特に、押圧加工部の構成を簡素化することにより保
守点検作業性を向上させ、かつ、小径の内面溝付管を製
造できる内面溝付管製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner grooved pipe manufacturing apparatus, and more particularly, by improving the maintenance workability by simplifying the structure of the pressing portion, it is possible to manufacture an inner grooved pipe having a small diameter. The present invention relates to an inner grooved tube manufacturing apparatus.

【０００２】[0002]

【背景技術】内面溝付管製造装置として、図８に示すも
のが、特開平４−１６４２９０号として本出願人によっ
て提案されている。この装置は、被加工管１を第１の外
径に減径する引抜き部６と、引抜き部６において被加工
管１の内径を規定するフローティングプラグ９、一端が
フローティングプラグ９に回転自在に支持されるタイロ
ッド１０の他端に回転自在に支持されており、突起８ａ
を表面に有する溝切り加工プラグ８、溝切り加工プラグ
８が位置する被加工管１の外周に設けられ、送り込み側
の先端が窄められた複数の加工ロール５、加工ロール５
と外接する複数のバックアップロール４、複数のバック
アップロール４をシャフト３によって片持ち支持，回転
させることにより被加工管１の周囲を同軸状に回動する
回転ヘッド２、及び加工ロール５のスラスト荷重をを受
け止めるスラストベアリング１３とを有する押圧加工部
を有し、回転ヘッド２より送出された内面溝付管１２を
所望の外径に減径する引抜き部７とを有している。2. Description of the Related Art An inner grooved tube manufacturing apparatus shown in FIG. 8 has been proposed by the present applicant as Japanese Patent Laid-Open No. 4-164290. This device includes a drawing portion 6 that reduces the diameter of the pipe 1 to be processed to a first outer diameter, a floating plug 9 that defines the inner diameter of the pipe 1 to be processed in the drawing portion 6, and one end of which is rotatably supported by the floating plug 9. The tie rod 10 is rotatably supported at the other end of the tie rod 10.
Grooved processing plug 8 having a grooved surface, a plurality of processing rolls 5 provided on the outer circumference of the pipe 1 to be processed where the grooved processing plug 8 is located, and the leading end on the feeding side is narrowed
A plurality of backup rolls 4 circumscribed with the rotating roll 2, a plurality of backup rolls 4 supported by a shaft 3 in a cantilever manner and rotating to rotate coaxially around the pipe 1 to be processed, and a thrust load of the processing roll 5. A thrust bearing 13 for receiving the pressure, and a withdrawal portion 7 for reducing the inner surface grooved tube 12 fed from the rotary head 2 to a desired outer diameter.

【０００３】被加工管１は引抜き部６で引き抜かれるこ
とにより第１の外径に減径され、加工ロール５に送り込
まれる。バックアップロール４に外接している加工ロー
ル５は被加工管１の外周を回転しながら中心方向に押圧
することにより、管内に挿入されている溝切り加工プラ
グ８の突起８ａに内壁を押し付ける。The pipe 1 to be processed is reduced to the first outer diameter by being pulled out by the pulling portion 6, and is fed to the processing roll 5. The processing roll 5 circumscribing the backup roll 4 presses the inner wall against the projection 8a of the grooved plug 8 inserted in the pipe by rotating the outer periphery of the pipe 1 to be processed and pressing it toward the center.

【０００４】図９は、図８におけるＡ−Ａ断面を示し、
回転ヘッド（図示せず）によってバックアップロール４
が図中に示すＡ方向（反時計周り）に回転すると、バッ
クアップロール４に外接する加工ロール５は被加工管１
を押圧しつつＢ方向（時計周り）に回転しながらｂの軌
跡を時計周りに回動する。このとき、バックアップロー
ル４もａの軌跡を時計周りに回動する。FIG. 9 shows a cross section taken along the line AA in FIG.
Backup roll 4 by rotating head (not shown)
Rotating in the direction A (counterclockwise) shown in the figure, the processing roll 5 circumscribing the backup roll 4 is
While pressing, rotate in the direction B (clockwise) and rotate the trajectory of b clockwise. At this time, the backup roll 4 also rotates the locus of a clockwise.

【０００５】このことにより、内壁に溝１１を有する内
面溝付管１２が形成され、更に引抜き部７において引き
抜かれることにより所望の外径に減径される。As a result, the inner grooved tube 12 having the groove 11 on the inner wall is formed, and further pulled out at the pulling-out portion 7 to be reduced in diameter to a desired outer diameter.

【０００６】[0006]

【発明が解決しようとする課題】しかし、従来の内面溝
付管製造装置によると、加工ロール端部にスラストベア
リングを設けているため、これを固定する部分の構成が
複雑で押圧加工部の保守点検作業を難しくするほか、予
めサイズの決められたスラストベアリングによって加工
ロールのサイズに制約が生じ、加工ロールを任意の大き
さに小型化することができない。それ故、小径の被加工
管を加工する場合に加工ロールを接近させるとロール同
士が干渉してしまうので、加工できる内面溝付管の最小
径が制限されてしまうという問題がある。従って、本発
明の目的は、押圧加工部の保守点検作業が容易に行え、
小径の内面溝付管であっても容易に製造することができ
る内面溝付管製造装置を提供することにある。However, according to the conventional inner surface grooved pipe manufacturing apparatus, since the thrust bearing is provided at the end of the processing roll, the structure of the portion for fixing the thrust bearing is complicated, and the maintenance of the pressing processing portion is complicated. In addition to making the inspection work difficult, the size of the working roll is restricted by the thrust bearing having a predetermined size, and the working roll cannot be downsized to an arbitrary size. Therefore, when the processing rolls are brought close to each other when processing a small-diameter pipe to be processed, the rolls interfere with each other, so that there is a problem that the minimum diameter of the inner grooved pipe that can be processed is limited. Therefore, an object of the present invention is to easily perform maintenance and inspection work on the pressing portion,
An object of the present invention is to provide an inner surface grooved pipe manufacturing apparatus capable of easily manufacturing even a small diameter inner surface grooved pipe.

【０００７】[0007]

【課題を解決するための手段】本発明は押圧加工部の保
守点検作業が容易に行え、小径の内面溝付管であっても
容易に製造できるようにするため、被加工管の被加工部
の内面に接触して位置し、内面溝に応じた溝切り部を外
周に有する溝切り加工プラグと、被加工管の被加工部の
外周方向に位置し、被加工管に同軸状に設けられる回転
ヘッドにシャフトで支持されて第１の円軌跡上で自転し
ながら公転する複数の第１のロールと、被加工管の被加
工部の外面と複数の第１のロールの内側の間に形成され
る空間に位置し、複数の第１のロールと外接することに
よってその回転力を受け、回転ヘッドに接触する端部に
よって回転自在に支持されることにより第１の円軌跡よ
り小なる半径の第２の円軌跡上で自転しながら公転する
複数の第２のロールを備え、複数の第２のロールは、回
転ヘッドの回転によって第１のロールが自転公転運動す
ることにより被加工管の被加工部を減径するように自転
公転運動を行い、被加工管が軸方向に移動することによ
り複数の第２のロールのスラスト荷重を端部を介して回
転ヘッドに負担させ、かつ、溝切り加工プラグを回転さ
せて被加工管の被加工部の内面に溝を形成する内面溝付
管製造装置を提供する。SUMMARY OF THE INVENTION According to the present invention, since the maintenance work of the press working portion can be easily carried out, and even the inner diameter grooved pipe having a small diameter can be easily manufactured, the work portion of the work pipe is processed. A groove cutting plug that is in contact with the inner surface of the pipe and has a groove cutting portion corresponding to the inner surface groove on the outer circumference, and is located in the outer peripheral direction of the processed portion of the pipe to be processed, and is provided coaxially to the pipe to be processed. Formed between a plurality of first rolls supported by a rotary head by a shaft and revolving around a first circular locus while revolving, and an outer surface of a processed portion of a pipe to be processed and an inside of the plurality of first rolls. Is located in a space defined by a plurality of first rolls and receives its rotational force by circumscribing a plurality of first rolls, and is rotatably supported by an end portion in contact with the rotary head. A plurality of second rows that revolve while revolving on the second circle locus. The plurality of second rolls perform a revolution revolving motion so as to reduce the diameter of the portion to be machined of the pipe to be machined by the rotation of the rotating head to cause the first roll to revolve on its own axis. By moving in the axial direction, the thrust load of the plurality of second rolls is applied to the rotary head through the end portion, and the groove cutting plug is rotated to form the groove on the inner surface of the processed portion of the pipe to be processed. An inner grooved pipe manufacturing apparatus for forming is provided.

【０００８】[0008]

【作用】本発明の内面溝付管製造装置によると、第２の
円軌跡上で自転しながら公転する第２のロールの端部が
回転ヘッドに点状に接触するので摩擦が小さくなり、軸
受構造を簡素化できる。According to the inner grooved tube manufacturing apparatus of the present invention, the end of the second roll, which revolves while rotating on the second circular locus, comes into point contact with the rotary head, so that friction is reduced and the bearing The structure can be simplified.

【０００９】[0009]

【実施例】以下、本発明の内面溝付管製造装置を図面を
基に詳細に説明する。図８と同一の構成および機能を有
する部分については同一の符号および引用数字を付して
いるので、重複する説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An inner grooved tube manufacturing apparatus of the present invention will be described in detail below with reference to the drawings. Portions having the same configurations and functions as those in FIG. 8 are designated by the same reference numerals and reference numerals, and thus duplicated description will be omitted.

【００１０】図１は、本発明の内面溝付管製造装置の第
１の実施例を示し、被加工管１の外周を押圧する加工ロ
ール５は、球面状に形成された端部５Ａによって回転ヘ
ッド２と接触し、被加工管１の移動方向へのスラストに
対して支持されている。FIG. 1 shows a first embodiment of an inner grooved pipe manufacturing apparatus of the present invention, in which a processing roll 5 for pressing the outer periphery of a pipe 1 to be processed is rotated by an end portion 5A formed in a spherical shape. It contacts the head 2 and is supported against thrust in the moving direction of the pipe 1 to be processed.

【００１１】上記構成によると、加工ロール５を端部５
Ａで回転ヘッド２に点支持させることによりスラストベ
アリングを省略できる。スラストベアリングを省略し、
回転ヘッド２に対して端部５Ａによる点支持構造とする
ことで加工ロール５の支持構造が簡素化されて摩擦抵抗
が低減する。更に内面溝切り加工を行う被加工管１の外
径に合わせて加工ロール５を速やかに、かつ容易に交換
することができる。According to the above construction, the processing roll 5 is provided with the end portion 5
The thrust bearing can be omitted by supporting the rotary head 2 at point A. Omit the thrust bearing,
By providing the rotary head 2 with the point support structure by the end portion 5A, the support structure of the processing roll 5 is simplified and the frictional resistance is reduced. Furthermore, the processing roll 5 can be quickly and easily replaced according to the outer diameter of the pipe 1 to be processed for grooving the inner surface.

【００１２】また、端部５Ａが回転ヘッド２の径方向に
移動しても被加工管１の長さ方向へのスラスト荷重は常
に適切に支持されるので、加工ロール５の押圧量を増減
する操作が容易になる。Further, even if the end portion 5A moves in the radial direction of the rotary head 2, the thrust load in the length direction of the pipe 1 to be processed is always properly supported, so that the pressing amount of the processing roll 5 is increased or decreased. Operation becomes easy.

【００１３】図２は、本発明の内面溝付管製造装置の第
２の実施例を示し、回転ヘッド２の側面の当接部分には
当たり幅ｗを有する環状の受け板２Ａが固定されてお
り、溝切り加工時において高速で回転しながら被加工管
１の外周を回動する加工ロール５の端部５Ａによって負
荷されるスラスト荷重を受け止める。端部５Ａとの接触
によって磨滅した場合には新たな受け板２Ａと交換する
ことができる。FIG. 2 shows a second embodiment of the inner grooved tube manufacturing apparatus of the present invention, in which an annular receiving plate 2A having a contact width w is fixed to the abutting portion of the side surface of the rotary head 2. At the time of grooving, it receives the thrust load applied by the end 5A of the processing roll 5 that rotates around the outer periphery of the pipe 1 to be processed while rotating at high speed. When it wears out due to contact with the end 5A, it can be replaced with a new receiving plate 2A.

【００１４】受け板２Ａを設けるにあたって、加工ロー
ル５の材質に比較して柔らかい材質を使用することで端
部５Ａの磨耗の進行を防止できる。When the receiving plate 2A is provided, the wear of the end portion 5A can be prevented by using a softer material than the material of the working roll 5.

【００１５】図３は、本発明の内面溝付管製造装置の第
３の実施例を示す部分断面図であり、シャフト３に支持
されるバックアップロール４によって回転ヘッド２の回
転力を伝達される加工ロール５が被加工管１の外周に接
触して設けられており、その被加工管出口側に円錐状に
形成された端部５Ａを有する。FIG. 3 is a partial cross-sectional view showing a third embodiment of the inner surface grooved pipe manufacturing apparatus of the present invention, in which the rotational force of the rotary head 2 is transmitted by the backup roll 4 supported by the shaft 3. The processing roll 5 is provided in contact with the outer circumference of the pipe 1 to be processed, and has an end portion 5A formed in a conical shape on the outlet side of the pipe to be processed.

【００１６】図４は、第３の実施例において端部５Ａが
当接する回転ヘッド２の側面の当接部分に当たり幅ｗを
有する環状の受け板２Ａを固定した例を示す。FIG. 4 shows an example in which an annular receiving plate 2A having a contact width w is fixed to the abutting portion of the side surface of the rotary head 2 with which the end portion 5A abuts in the third embodiment.

【００１７】図５は、加工ロール５の端部５Ａの形状を
示し、(a) は曲面状に形成されたもの、(b) は端部５Ａ
の中心部に球面状の突起を設けたもの、(c) は端部５Ａ
の中心部に円錐状の突起を設けたものを示している。こ
の他にも、回転ヘッド（図示せず）に対して点支持構造
となる形状であっても良い。FIG. 5 shows the shape of the end portion 5A of the processing roll 5, where (a) is a curved surface and (b) is the end portion 5A.
With a spherical projection at the center of the, (c) is the end 5A
It is shown that a conical projection is provided at the center of the. In addition to this, the rotary head (not shown) may have a point support structure.

【００１８】図６は、本発明の内面溝付管製造装置の第
４の実施例を示す部分断面図であり、シャフト３に支持
されるバックアップロール４によって回転ヘッド２の回
転力を伝達される加工ロール５が被加工管１の外周に接
触して設けられており、その被加工管出口側の端部５Ａ
をすり鉢状に切除してボールベアリング５ｂを設けた構
成を有する。ボールベアリング５ｂは回転ヘッド２の側
面に点接触している。FIG. 6 is a partial cross-sectional view showing the fourth embodiment of the inner grooved tube manufacturing apparatus of the present invention, in which the rotational force of the rotary head 2 is transmitted by the backup roll 4 supported by the shaft 3. The processing roll 5 is provided in contact with the outer periphery of the pipe 1 to be processed, and the end portion 5A of the pipe to be processed exit side 5A.
Is cut into a mortar shape and a ball bearing 5b is provided. The ball bearing 5b is in point contact with the side surface of the rotary head 2.

【００１９】また、図７ではボールベアリング５ｂが接
触する回転ヘッド２の側面に、被加工管１の径方向に幅
ｗ，長さ方向に深さｄを有する溝２ｂが形成されてい
る。このことによって、被加工管１の長さ方向に加工ロ
ール５が動いても加工ロール５の端部５Ａからボールベ
アリング５ｂが脱落することを防止できる。Further, in FIG. 7, a groove 2b having a width w in the radial direction of the pipe 1 to be processed and a depth d in the length direction is formed on the side surface of the rotary head 2 with which the ball bearing 5b is in contact. As a result, even if the processing roll 5 moves in the length direction of the pipe 1 to be processed, the ball bearing 5b can be prevented from falling off from the end 5A of the processing roll 5.

【００２０】更に、加工ロール５の交換や製造開始時に
溝２ｂがボールベアリング５ｂのガイドとなるので、加
工ロール５及びバックアップロール４の交換作業後の組
み立てが容易になる。Further, since the groove 2b serves as a guide for the ball bearing 5b at the time of exchanging the working roll 5 or starting the manufacturing, the assembly of the working roll 5 and the backup roll 4 after the replacement work becomes easy.

【００２１】上記したように、加工ロールの端部を回転
ヘッドに対して点支持構造とすることにより加工ロール
を小径化することが可能になる。そのため、加工ロール
間の距離を接近させても加工ロール同士が干渉しないの
で、小径の被加工管であっても内面溝付加工が可能にな
る。また、被加工管の内面に溝切り加工を行わない減径
加工にも適用できる。As described above, the diameter of the working roll can be reduced by forming the end portion of the working roll into a point support structure for the rotary head. Therefore, even if the distance between the processing rolls is reduced, the processing rolls do not interfere with each other, so that the inner surface grooved processing can be performed even for a pipe having a small diameter. Further, it can also be applied to diameter-reducing processing in which grooving is not performed on the inner surface of the pipe to be processed.

【００２２】[0022]

【発明の効果】以上説明した通り、本発明の内面溝付管
製造装置によると、被加工管の被加工部の内面に接触し
て位置し、内面溝に応じた溝切り部を外周に有する溝切
り加工プラグと、被加工管の被加工部の外周方向に位置
し、被加工管に同軸状に設けられる回転ヘッドにシャフ
トで支持されて第１の円軌跡上で自転しながら公転する
複数の第１のロールと、被加工管の被加工部の外面と複
数の第１のロールの内側の間に形成される空間に位置
し、複数の第１のロールと外接することによってその回
転力を受け、回転ヘッドに接触する端部によって回転自
在に支持されることにより第１の円軌跡より小なる半径
の第２の円軌跡上で自転しながら公転する複数の第２の
ロールを備え、複数の第２のロールは、回転ヘッドの回
転によって第１のロールが自転公転運動することにより
被加工管の被加工部を減径するように自転公転運動を行
い、被加工管が軸方向に移動することにより複数の第２
のロールのスラスト荷重を端部を介して回転ヘッドに負
担させ、かつ、溝切り加工プラグを回転させて被加工管
の被加工部の内面に溝を形成するようにしたため、押圧
加工部の保守点検作業が容易に行え、小径の内面溝付管
であっても容易に製造できるとともに、保守面での経済
性を向上させることができる。As described above, according to the inner grooved pipe manufacturing apparatus of the present invention, it is located in contact with the inner surface of the portion to be processed of the pipe to be processed and has the grooved portion corresponding to the inner surface groove on the outer periphery. A plurality of grooving plugs and a plurality of revolving orbiting shafts supported by a rotary head, which is located in the outer peripheral direction of the processed portion of the pipe to be processed and is coaxial with the pipe to be processed, and which is rotated on a first circular locus. Is located in a space formed between the outer surface of the processed portion of the pipe to be processed and the insides of the plurality of first rolls, and its rotational force is circumscribed by the plurality of first rolls. And a plurality of second rolls that revolve while revolving on a second circular locus having a radius smaller than the first circular locus by being rotatably supported by an end portion that contacts the rotary head, The plurality of second rolls are rotated by the rotary head to rotate the first roll. Le performs rotation revolves to reduced diameter portion to be processed of the work tube by motion rotation revolution, multiple by the processed pipe moves axially second
Since the thrust load of the roll is applied to the rotary head through the end and the groove cutting plug is rotated to form a groove on the inner surface of the processed part of the pipe to be processed, maintenance of the pressed part is performed. The inspection work can be easily performed, and even a small diameter inner grooved tube can be easily manufactured, and the economical efficiency in terms of maintenance can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の内面溝付管製造装置の第１の実施例を
示す説明図である。FIG. 1 is an explanatory view showing a first embodiment of an inner grooved pipe manufacturing apparatus of the present invention.

【図２】本発明の内面溝付管製造装置の第２の実施例を
示す説明図である。FIG. 2 is an explanatory view showing a second embodiment of the inner grooved tube manufacturing apparatus of the present invention.

【図３】本発明の内面溝付管製造装置の第３の実施例を
示す説明図である。FIG. 3 is an explanatory view showing a third embodiment of the inner grooved tube manufacturing apparatus of the present invention.

【図４】第３の実施例の変形例を示す説明図である。FIG. 4 is an explanatory diagram showing a modification of the third embodiment.

【図５】加工ロール５の端部５Ａの形状例を示す説明図
である。FIG. 5 is an explanatory view showing a shape example of an end portion 5A of a processing roll 5.

【図６】本発明の内面溝付管製造装置の第４の実施例を
示す説明図である。FIG. 6 is an explanatory view showing a fourth embodiment of the inner grooved tube manufacturing apparatus of the present invention.

【図７】第４の実施例の変形例を示す説明図である。FIG. 7 is an explanatory diagram showing a modification of the fourth embodiment.

【図８】従来の内面溝付管製造装置を示す説明図であ
る。FIG. 8 is an explanatory view showing a conventional inner surface grooved pipe manufacturing apparatus.

【図９】従来の内面溝付管製造装置の動作を示す説明図
である。FIG. 9 is an explanatory diagram showing an operation of a conventional inner surface grooved pipe manufacturing apparatus.

【符号の説明】[Explanation of symbols]

１ 被加工管 ２ 回転ヘッド ２Ａ 受け板 ２ｂ 溝 ３ シャフト ４ バックアップロ
ール ５， 加工ロール ５Ａ 端部 ５ｂ ボールベアリング ６，７ 引抜き部 ８ 溝切り加工プラグ ８ａ 突起 ９ フローティングプラグ １０ タイロッド １１ 溝 １２ 内面溝付管1 Pipe to be processed 2 Rotating head 2A Receiving plate 2b Groove 3 Shaft 4 Backup roll 5, Processing roll 5A End 5b Ball bearing 6,7 Drawing part 8 Grooving plug 8a Protrusion 9 Floating plug 10 Tie rod 11 Groove 12 With inner groove tube

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 被加工管の被加工部の内面に接触して位
置し、内面溝に応じた溝切り部を外周に有する溝切り加
工プラグと、 前記被加工管の被加工部の外周方向に位置し、前記被加
工管に同軸状に設けられる回転ヘッドにシャフトで支持
されて第１の円軌跡上で自転しながら公転する複数の第
１のロールと、 前記被加工管の被加工部の外面と前記複数の第１のロー
ルの内側の間に形成される空間に位置し、前記複数の第
１のロールと外接することによってその回転力を受け、
前記回転ヘッドに接触する端部によって回転自在に支持
されることにより前記第１の円軌跡より小なる半径の第
２の円軌跡上で自転しながら公転する複数の第２のロー
ルを備え、 前記複数の第２のロールは、前記回転ヘッドの回転によ
って前記第１のロールが自転公転運動することにより前
記被加工管の被加工部を減径するように自転公転運動を
行い、前記被加工管が軸方向に移動することにより前記
複数の第２のロールのスラスト荷重を前記端部を介して
前記回転ヘッドに負担させ、かつ、前記溝切り加工プラ
グを回転させて前記被加工管の被加工部の内面に溝を形
成することを特徴とする内面溝付管製造装置。1. A grooving plug which is located in contact with an inner surface of a processed portion of a pipe to be processed and has a grooved portion on the outer periphery according to an inner surface groove, and an outer peripheral direction of the processed portion of the pipe to be processed. A plurality of first rolls, which are located on the shaft, are supported by a shaft on a rotary head provided coaxially with the pipe to be processed and revolve while rotating on a first circular locus, and a processed portion of the pipe to be processed. Located in the space formed between the outer surface of the first roll and the inner side of the plurality of first rolls, and receives the rotational force by circumscribing the plurality of first rolls,
A plurality of second rolls that revolve while revolving on a second circular locus having a radius smaller than that of the first circular locus by being rotatably supported by an end contacting the rotary head; The plurality of second rolls perform a revolution revolving motion so as to reduce the diameter of the portion to be machined of the pipe to be machined due to the revolution of the first roll by the rotation of the rotary head. Moving axially causes the thrust load of the plurality of second rolls to be borne by the rotary head through the end portions, and the grooving plug is rotated to process the pipe to be processed. An inner grooved tube manufacturing apparatus, characterized in that a groove is formed on the inner surface of the portion. 【請求項２】 前記端部は、前記複数の第２のロールの
軸線上に設けられる窪みに支持されるボールベアリング
を有し、前記ボールベアリングを介して前記回転ヘッド
と接触する請求項第１項記載の内面溝付管製造装置。2. The end portion has a ball bearing supported in a recess provided on the axis of the plurality of second rolls, and contacts the rotary head via the ball bearing. The inner grooved tube manufacturing apparatus according to the item. 【請求項３】 前記端部は、円錐状，曲面状或いは球面
状の先端形状を有する請求項第１項記載の内面溝付管製
造装置。3. The inner grooved tube manufacturing apparatus according to claim 1, wherein the end portion has a conical shape, a curved surface shape, or a spherical shape. 【請求項４】 前記回転ヘッドは、前記端部との当接部
分に着脱可能に設けられる保護部材を有する請求項第１
項記載の内面溝付管製造装置。4. The rotary head has a protective member detachably provided at a contact portion with the end portion.
The inner grooved tube manufacturing apparatus according to the item. 【請求項５】 前記回転ヘッドは、前記端部との当接部
分が溝状に形成されている請求項第１項記載の内面溝付
管製造装置。5. The inner grooved tube manufacturing apparatus according to claim 1, wherein the rotary head is formed in a groove shape at a contact portion with the end portion.
JP03788294A 1993-08-30 1994-02-10 Internal grooved pipe manufacturing equipment Expired - Fee Related JP3269244B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03788294A JP3269244B2 (en) 1993-08-30 1994-02-10 Internal grooved pipe manufacturing equipment

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP23732893 1993-08-30
JP5-237328 1993-08-30
JP03788294A JP3269244B2 (en) 1993-08-30 1994-02-10 Internal grooved pipe manufacturing equipment

Publications (2)

Publication Number Publication Date
JPH07116742A true JPH07116742A (en) 1995-05-09
JP3269244B2 JP3269244B2 (en) 2002-03-25

Family

ID=26377041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03788294A Expired - Fee Related JP3269244B2 (en) 1993-08-30 1994-02-10 Internal grooved pipe manufacturing equipment

Country Status (1)

Country Link
JP (1) JP3269244B2 (en)

Also Published As

Publication number Publication date
JP3269244B2 (en) 2002-03-25

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