JP4472071B2 - Drawing machine - Google Patents

Drawing machine Download PDF

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Publication number
JP4472071B2
JP4472071B2 JP32414699A JP32414699A JP4472071B2 JP 4472071 B2 JP4472071 B2 JP 4472071B2 JP 32414699 A JP32414699 A JP 32414699A JP 32414699 A JP32414699 A JP 32414699A JP 4472071 B2 JP4472071 B2 JP 4472071B2
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Japan
Prior art keywords
tool
cam plate
cam
machining
main shaft
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JP32414699A
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Japanese (ja)
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JP2001137962A (en
Inventor
正和 飛松
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日本スピンドル製造株式会社
株式会社三五
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Application filed by 日本スピンドル製造株式会社, 株式会社三五 filed Critical 日本スピンドル製造株式会社
Priority to JP32414699A priority Critical patent/JP4472071B2/en
Priority claimed from US09/857,944 external-priority patent/US6536315B1/en
Publication of JP2001137962A publication Critical patent/JP2001137962A/en
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Description

【0001】
【発明の属する技術分野】
本発明はパイプ又は円盤状素材の絞り加工を行う絞り加工装置に関するものである。
【0002】
【従来の技術】
従来の例えばパイプ先端等の円筒部材の絞り加工を行う絞り加工装置において、絞り工具を回転する主軸先端に取付けられた工具取付け台に半径方向に摺動可能に支持せしめ、これにより絞り加工を行う方式が採られている。
この場合、工具を半径方向への移行手段として、工具取付け台に工具を半径方向に移行するカム板を備え、該取付け台は主軸先端に取付けられ、カム板は主軸を嵌挿するカム軸の先端に取付けられ、該カム軸は主軸から差動歯車機構(例えば特公平3ー8412号)、は撓み噛み合い式駆動伝達装置(例えば特願平10ー09777号)等の連動手段を利用して主軸の回転量を適宜に変化させてカム軸を駆動する手段が採られている。
【0003】
【発明が解決しようとする課題】
上記構成において、工具取付け台に取付けられた例えば複数の絞りローラは、上記カム板により同期して進退されるが、絞り加工においては、その後不要箇所の切断を必要とする場合がある。このためには、通常切断工具を別個の工具取付け台に取付け、該取付け台を進退させて行う方式が採られている。
しかしこの方式では、上記連動手段と共に切断工具の進退を操作せねばならず、単に構造が複雑であるのみでなく、操作に手数を要する等の問題がある。
本発明はかゝる点に鑑み、上記工具取付け台に絞り工具と共に切断工具を載置し、それぞれを1個のカム板の回転によりそれぞれの工具を選択して進退させ、操作の簡素化を計ることを目的とする。
【0004】
【課題を解決するための手段】
上記目的を達成するための第1の発明は、主軸先端に加工用工具を半径方向に摺動可能に支持する工具取付け台と、上記主軸と同芯に嵌挿したカム軸先端に上記工具を半径方向に移行せしめるカム板を備え、上記カム軸は主軸の回転と関連作動せしめる絞り加工装置において、前記工具取付け台及びカム板に2組の加工用工具を備え、その内一方の加工用工具に他方の加工用工具の移行方向と逆方向に移行するための逆行機構を備えたことを特徴とする。
【0005】
上記の構成からなる本発明は、工具取付け台には2の加工用工具を備え、その内一方の加工用工具に逆行機構を備えたことにより、一方の加工用工具は内方へ前進して加工を行い、他方の加工用工具は外方の退避位置に移行することにより、1個のカム板の操作により両加工用工具を相反する方向に移行することができる。
【0006】
また第2の発明は、上記カム板に形成する案内溝は、一方加工用工具の内方への前進時は、他方の加工用工具を外方の退避位置に保持すべく、内外方への移行部と、外方での退避位置を保持する同心円部とを形成したことを特徴とする。
【0007】
上記の構成からなる本発明は、一方加工用工具の内方への前進時は、他方の加工用工具は外方の退避位置に保持される。また、その逆も行われる。これらはカム板の回動により選択して行われる。
【0008】
また第3の発明は、工用工具を、絞り加工用工具切断加工用工具との2組の加工用工具で構成したことを特徴とする。
【0009】
上記の構成からなる本発明は、絞り加工とその後の切断加工とをカム板の正逆回転により連続して行うことができる。
【0010】
【発明の実施の形態】
以下本発明を図面に示す実施の態様に基づいて説明する。図において、絞り加工装置1は中空の主軸2と、該主軸先端に取付けられる工具取付け台3と、上記主軸2内に嵌挿されるカム軸4と、該カム軸4の先端に取付けられるカム板5とを備える。Dは被加工用パイプ支持用マンドレルを示す。
【0011】
主軸は適宜の駆動モータMに接続され、筐体6にベアリング7を介して支持され、カム軸4は主軸2にベアリング8を介して支持され、かつ主軸2とは、適宜の変速機構10、例えば撓み噛み合い式駆動伝達装置を介して連動される。この撓み噛み合い式駆動伝達装置10の概略を図5乃至図7に示す。
【0012】
図において、この駆動伝達装置10は、主軸2とカム軸4にそれぞれ係合される外輪11、12と、それぞれの外輪内面に形成された歯溝(両者は同一歯数とする)に噛合し、かつ歯数の異なる歯形(通常2個少ない)を形成した可撓性の歯車輪13と、該歯車輪13を楕円形に、かつ回動可能に支持し、上記外輪の歯溝とは相対する2か所において噛合させるウエーブ形成輪14とより構成する。15はウエーブ輪駆動用モータを示す。
【0013】
上記構成において、ウエーブ形成輪14を固定し、一方の外輪11を駆動したとき、歯車輪13も回動し、これに伴い他方の外輪12も同一回転速度で回転される。次に外輪11を固定し、ウエーブ形成輪14を回転すると、歯車輪12は外輪11とは歯数の差があり、これにより他方の外輪12は回動される。
【0014】
従って外輪11を回転しつゝウエーブ形成輪14を回動することにより、他方の外輪12は、外輪11に対して相対速度は変化する。その変動回転数はウエーブ形成輪14の正逆方向の回転数に比例して変化し、これによりカム板5を工具取付け台3と同一回転速度に保持し、は増減して回転される。
【0015】
工具取付け台3は、主軸2に取付けフランジ20を介して取付けられ、工具R1、R2の支持部材21、22を半径方向に案内する案内溝23、24を形成する。ただし図例は工具R1は絞りローラ、R2は切断ローラを示す。
また図例はそれぞれ2個づつ設けた例を示すもので、それぞれR1a、R1b、R2a、R2bとする。21a、21b及び22a、22bはそれぞれの支持部材(以下総称するきは、21、22という)を示す。
【0016】
カム板5には、回転により工具を半径方向に案内する2個の渦巻き状カム溝30、31を形成する。このカム溝は図3に示す如く、それぞれ略々270度とし、全周を4等分して角度α、β、γ、δとするとき、角度β、δ部は同心円部、即ち一方のカム溝は小径部、他方は大径部とし、角度α、γ部は変径部とし、工具支持部材21、22にはこのカム溝30、31に嵌挿される案内ローラ35a、35b及び36a、36b(以下総称するときは、35、36という)を取付ける。
【0017】
上記工具支持部材21、22の内、何れか一方の支持部材、例えば22は逆行機構40を備える。この逆行機構40は、上記カム溝30、31により案内ローラが内方、は外方に移行するとき、工具を逆に外方は内方に移行するようにしたもので、その一例を図9乃至図11に示す。図において、この逆行機構40は工具(図例は切断ローラR2)支持台41と、この支持台に半径方向に摺動可能に支持せしめた下部移行部材42と逆行歯車部材43とよりなる。支持台41は工具取付け台3の案内溝24に沿って移行し、逆行歯車部材43は下部移行部材42の一側に形成したラック44に噛合する歯車45と、この歯車に噛合する中間歯車46、この中間歯車と同一軸47に取付けられた駆動歯車48、この歯車48に噛合すべく支持台41の一側に形成されたラック49とより構成される。
【0018】
これにより、案内ローラ36が下部移行部材42を伴ってカム溝に沿って半径方向に移行するとき、支持台41は反対方向に移行される。
【0019】
上記構成において、各案内ローラ35、36が図3の位置、即ちカム溝30、31の同心円部と変径部との境界に位置するときは、絞り加工用工具R1は外方退避位置にあり、切断用工具R2は上記逆行機構40により同様に外方の退避位置に位置する。この状態において、カム板5を矢符Y方向(左方向)に回動するとき、絞り加工用工具の案内ローラ35a、35bは内方、即ち絞り加工方向に移行する。この場合、切断加工用案内ローラ36a、36bは同心円上、即ち退避位置に保持された状態に保持される。
【0020】
また逆に右方向に回動するときは、絞り加工用案内ローラ35は外方の同心円上に、即ち退避位置にあり、切断用工具R2の案内ローラ36は外方に移行するも逆転機構40の作用によって、従って該切断工具R2は内方の加工位置方向に移行する。
【0021】
従って、適宜の支持機構(図示省略)により保持された被加工用パイプにマンドレルDを挿入し主軸を回転しつゝ絞り加工装置1を前進し、絞り工具R1を所定位置に前進し、ついで変速機構10のモータ15を駆動してカム板5を回動することにより、前記要領で絞り加工、及び不要箇所の切断加工を行う。
【0022】
【発明の効果】
以上の如く本発明によるときは、主軸先端に工具取付け台と、主軸と同芯のカム軸先端に上記工具を半径方向に移行せしめるカム板を備え、カム軸は主軸と選択して関連作動せしめる絞り加工装置において、前記工具取付け台及びカム板に2組の加工用工具を備え、その内一方の加工用工具に他方の加工用工具の移行方向と逆方向に移行するための逆行機構を備え、カム板の回転に伴い他方の加工用工具の進退とは逆方向に移行するようにしたから、1個のカム板で2組の加工用工具をれぞれ反対方向に移行することができる。
また第2の発明によるときは、上記カム板は、一方加工用工具の内方への前進時は、他方の加工用工具は外方の退避位置に保持すべく、案内溝は内方への移行部と、退避位置に保持する回転との同心部とを形成したことにより、加工を確実に行うことができる。
また第3の発明によるときは、工用工具を、絞り加工用工具切断加工用工具との2組の加工用工具で構成したことにより、絞り加工と、該絞り加工により形成される余剰部分の切断とをカム板の正逆回転により連続して行うことができる。
【図面の簡単な説明】
【図1】 図2におけるPーP線に沿う本発明絞り加工装置の全体縦断面図である。
【図2】 工具取付け台の正面図である。
【図3】 カム板の正面図である。
【図4】 図3の横断面図である。
【図5】 図6におけるQーQ線沿う変速機構の縦断面図である。
【図6】 図5におけるRーR線に沿う縦断面図である。
【図7】 変速機構の斜視図である。
【図8】 図2におけるTーT線に沿う断面図である。
【図9】 図2におけるUーU線に沿う断面図である。
【図10】 図2におけるVーV線に沿う断面図である。
【図11】 逆行機構の作動説明図である。
【符号の説明】
1 絞り加工装置
2 主軸
3 工具取付け台
4 カム軸
5 カム板
40 逆行機構
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drawing apparatus for drawing a pipe or a disk-shaped material.
[0002]
[Prior art]
In a conventional drawing apparatus for drawing a cylindrical member such as a pipe tip, for example, a drawing tool is supported on a tool mounting base attached to a rotating spindle tip so as to be slidable in the radial direction, thereby drawing. The method is adopted.
In this case, as a means for moving the tool in the radial direction, the tool mounting base is provided with a cam plate for moving the tool in the radial direction, the mounting base is attached to the tip of the main shaft, and the cam plate is a cam shaft for inserting the main shaft. attached to the distal end, the cam shaft differential gear mechanism from the spindle (e.g., JP Kokoku 3 over 8412), or by using the interlocking means such as flexible meshing type drive transmission device (e.g. Japanese Patent Application 10 over No. 09777) Thus, means for driving the camshaft by appropriately changing the rotation amount of the main shaft is employed.
[0003]
[Problems to be solved by the invention]
In the above configuration, for example, the plurality of squeezing rollers attached to the tool mounting base are advanced and retracted synchronously by the cam plate. However, in the drawing process, there are cases where unnecessary portions need to be cut thereafter. For this purpose, a method is generally employed in which a cutting tool is attached to a separate tool mounting base, and the mounting base is advanced and retracted.
However, in this system, it is necessary to operate the cutting tool together with the interlocking means, and there is a problem that not only the structure is complicated, but also the operation requires time.
In view of this point, the present invention places a cutting tool together with a drawing tool on the tool mounting base, and selects and advances each tool by rotating one cam plate to simplify the operation. The purpose is to measure.
[0004]
[Means for Solving the Problems]
According to a first aspect of the present invention for achieving the above object, there is provided a tool mounting base for supporting a machining tool slidably in a radial direction at a spindle end, and the tool at a camshaft tip inserted concentrically with the spindle. In the drawing apparatus, the cam shaft is operated in association with the rotation of the main shaft, and the tool mounting base and the cam plate are provided with two sets of processing tools, and one of the processing tools Is provided with a retrograde mechanism for shifting in the direction opposite to the direction of movement of the other machining tool .
[0005]
In the present invention configured as described above, the tool mounting base is provided with two sets of machining tools, and one of the machining tools has a retrograde mechanism, so that one of the machining tools advances inward. When the other machining tool is moved to the outward retracted position, the two machining tools can be moved in opposite directions by operating one cam plate.
[0006]
The second invention, the guide grooves formed on the cam plate, during forward inward of one of the processing tool, to hold the other machining tool to the retracted position of the outer, the inner and outer side And a concentric circle portion that holds the retracted position outside.
[0007]
The present invention having the structure described above, during forward inward of one of the processing tool, the other of the processing tool is held in the retracted position of the outer. The reverse is also done. These are selected and performed by rotating the cam plate.
[0008]
The third invention is characterized in that the pressurized Engineering tool, and constituted by two sets of working tools with the drawing tool cutting tool.
[0009]
The present invention having the above-described configuration can continuously perform drawing and subsequent cutting by forward and reverse rotation of the cam plate.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings. In the drawing, a drawing apparatus 1 includes a hollow main shaft 2, a tool mount 3 attached to the tip of the main shaft, a cam shaft 4 fitted into the main shaft 2, and a cam plate attached to the tip of the cam shaft 4. 5. D represents a mandrel for supporting a pipe to be processed.
[0011]
The main shaft is connected to an appropriate drive motor M, supported on the housing 6 via a bearing 7, the cam shaft 4 is supported on the main shaft 2 via a bearing 8, and the main shaft 2 is connected to an appropriate speed change mechanism 10, For example, it is interlocked via a flexure meshing type drive transmission device. An outline of the flexibly meshing drive transmission device 10 is shown in FIGS.
[0012]
In the figure, the drive transmission device 10 meshes with outer rings 11 and 12 respectively engaged with the main shaft 2 and the cam shaft 4 and tooth grooves formed on the inner surfaces of the outer rings (both have the same number of teeth). And a flexible tooth wheel 13 having different tooth shapes (usually two fewer), and the tooth wheel 13 is supported in an oval shape so as to be rotatable, and is relative to the tooth groove of the outer ring. And a wave forming wheel 14 meshed at two locations. Reference numeral 15 denotes a wave wheel driving motor.
[0013]
In the above configuration, when the wave forming wheel 14 is fixed and one outer ring 11 is driven, the tooth wheel 13 is also rotated, and the other outer ring 12 is also rotated at the same rotational speed. Next, when the outer ring 11 is fixed and the wave forming wheel 14 is rotated, the tooth wheel 12 has a difference in the number of teeth from the outer ring 11, and the other outer ring 12 is thereby rotated.
[0014]
Therefore, the relative speed of the other outer ring 12 changes with respect to the outer ring 11 by rotating the wave forming wheel 14 while rotating the outer ring 11. The variation rotational speed varies in proportion to the rotational speed of the forward and reverse directions of the wave forming wheel 14, thereby holding the cam plate 5 at the same rotational speed and the tool mount 3, or is rotated to increase or decrease.
[0015]
The tool mount 3 is attached to the main shaft 2 via a mounting flange 20, and forms guide grooves 23 and 24 for guiding the support members 21 and 22 of the tools R1 and R2 in the radial direction. However, in the illustrated example, the tool R1 indicates a squeeze roller, and R2 indicates a cutting roller.
In addition, the illustrated example shows an example in which two each are provided, which are R1a, R1b, R2a, and R2b, respectively. Reference numerals 21a, 21b and 22a, 22b denote respective support members (hereinafter collectively referred to as 21, 22).
[0016]
The cam plate 5 is formed with two spiral cam grooves 30 and 31 for guiding the tool in the radial direction by rotation. As shown in FIG. 3, each cam groove is approximately 270 degrees, and when the entire circumference is equally divided into four angles α, β, γ, δ, the angles β, δ are concentric circles, that is, one cam. The groove is a small diameter portion, the other is a large diameter portion, and the angle α and γ portions are variable diameter portions, and the guide rollers 35a, 35b and 36a, 36b fitted in the cam grooves 30, 31 are inserted into the tool support members 21, 22. (Hereinafter collectively referred to as 35 and 36).
[0017]
Any one of the tool support members 21, 22, for example, 22 includes a retrograde mechanism 40. The retrograde mechanism 40, the guide rollers inwards by the cam grooves 30 and 31, when or migrating outwardly, the outwardly also reverse the tool obtained by such moves inwardly, an example of which It shows in FIG. 9 thru | or FIG. In the figure, the reverse mechanism 40 includes a tool (cutting roller R2 in the illustrated example) support base 41, a lower transition member 42 supported on the support base so as to be slidable in the radial direction, and a reverse gear member 43. The support base 41 moves along the guide groove 24 of the tool mounting base 3, and the reverse gear member 43 engages with a rack 44 formed on one side of the lower transition member 42, and an intermediate gear 46 meshes with this gear. The intermediate gear includes a drive gear 48 attached to the same shaft 47 and a rack 49 formed on one side of the support base 41 so as to mesh with the gear 48.
[0018]
Thereby, when the guide roller 36 moves in the radial direction along the cam groove with the lower transition member 42, the support base 41 is moved in the opposite direction.
[0019]
In the above configuration, when each of the guide rollers 35 and 36 is located at the position shown in FIG. 3, that is, at the boundary between the concentric circular portion and the diameter-changing portion of the cam grooves 30 and 31, the drawing tool R1 is in the outward retracted position. The cutting tool R2 is similarly positioned at the outward retracted position by the retrograde mechanism 40. In this state, when the cam plate 5 is rotated in the arrow Y direction (left direction), the guide rollers 35a and 35b of the drawing tool move inward, that is, in the drawing direction. In this case, the cutting processing guide rollers 36a and 36b are held concentrically, that is, held in the retracted position.
[0020]
On the other hand, when rotating in the right direction, the drawing guide roller 35 is located on the outer concentric circle, that is, in the retracted position, and the guide roller 36 of the cutting tool R2 moves outward, but the reverse rotation mechanism 40. Accordingly, the cutting tool R2 moves in the direction of the inner machining position.
[0021]
Accordingly, the mandrel D is inserted into the work pipe held by an appropriate support mechanism (not shown), the main shaft is rotated, the drawing device 1 is advanced, the drawing tool R1 is advanced to a predetermined position, and then the speed is changed. By rotating the cam plate 5 by driving the motor 15 of the mechanism 10, the drawing process and the unnecessary part cutting process are performed as described above.
[0022]
【The invention's effect】
As described above, according to the present invention, a tool mounting base is provided at the tip of the main shaft, and a cam plate for moving the tool in the radial direction is provided at the tip of the cam shaft concentric with the main shaft. In the drawing apparatus, the tool mounting base and the cam plate are provided with two sets of machining tools, and one of the machining tools is provided with a reverse mechanism for shifting in the direction opposite to the direction of movement of the other machining tool. since the other retreat of machining tools in accordance with the rotation of the cam plate is adapted to shift to the opposite direction, to migrate to one, respectively Re its two sets of working tools in the cam plate opposite directions it can.
Also when the second aspect of the invention, the cam plate during forward inward of one of the processing tool and the other machining tool to hold the retracted position of the outer guide groove inwardly By forming the transition part and the concentric part of the rotation held at the retracted position, the processing can be performed reliably.
Also when according to a third invention, the pressurized Engineering tool, by constructing two sets of working tools of the drawing tool cutting tool, and drawing, excess formed by restrictor processing The cutting of the portion can be performed continuously by forward and reverse rotation of the cam plate.
[Brief description of the drawings]
FIG. 1 is an overall longitudinal sectional view of a drawing apparatus of the present invention along the line P-P in FIG.
FIG. 2 is a front view of a tool mounting base.
FIG. 3 is a front view of a cam plate.
4 is a cross-sectional view of FIG. 3. FIG.
5 is a longitudinal sectional view of the speed change mechanism along the Q over Q line in Fig.
6 is a longitudinal sectional view taken along line RR in FIG.
FIG. 7 is a perspective view of a transmission mechanism.
FIG. 8 is a cross-sectional view taken along the line TT in FIG.
9 is a cross-sectional view taken along the line U-U in FIG.
10 is a cross-sectional view taken along line VV in FIG. 2. FIG.
FIG. 11 is an operation explanatory diagram of a retrograde mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drawing apparatus 2 Spindle 3 Tool mounting stand 4 Cam shaft 5 Cam plate 40 Reverse mechanism

Claims (3)

  1. 主軸先端に加工用工具を半径方向に摺動可能に支持する工具取付け台と、上記主軸と同芯に嵌挿したカム軸先端に上記工具を半径方向に移行せしめるカム板を備え、上記カム軸は主軸の回転と関連作動せしめる絞り加工装置において、前記工具取付け台及びカム板に2組の加工用工具を備え、その内一方の加工用工具に他方の加工用工具の移行方向と逆方向に移行するための逆行機構を備えたことを特徴とする絞り加工装置。A tool mounting base for supporting a machining tool at a tip end of the main shaft so as to be slidable in a radial direction; and a cam plate for moving the tool in the radial direction at a tip end of the cam shaft that is fitted and concentrically with the main shaft. Is a drawing device that operates in conjunction with the rotation of the spindle, wherein the tool mounting base and the cam plate are provided with two sets of processing tools, and one of the processing tools has a direction opposite to the transition direction of the other processing tool. A drawing apparatus comprising a retrograde mechanism for shifting .
  2. カム板に形成する案内溝は、一方加工用工具の内方への前進時は、他方の加工用工具を外方の退避位置に保持すべく、内外方への移行部と、外方での退避位置を保持する同心円部とを形成したことを特徴とする請求項1記載の絞り加工装置。Guide grooves formed in the cam plate during forward inward of one of the processing tool, to hold the other machining tool to the retracted position of the outer, and transition into and out laterally, with outward 2. The drawing apparatus according to claim 1, further comprising a concentric circular portion that holds the retracted position.
  3. 加工用工具を、絞り加工用工具切断加工用工具との2組の加工用工具で構成したことを特徴とする請求項1又は2記載の絞り加工装置。3. The drawing apparatus according to claim 1 , wherein the machining tool is composed of two sets of machining tools , ie , a drawing tool and a cutting tool.
JP32414699A 1999-11-15 1999-11-15 Drawing machine Expired - Lifetime JP4472071B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32414699A JP4472071B2 (en) 1999-11-15 1999-11-15 Drawing machine

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP32414699A JP4472071B2 (en) 1999-11-15 1999-11-15 Drawing machine
US09/857,944 US6536315B1 (en) 1999-10-13 2000-10-13 Spinning device
PCT/JP2000/007113 WO2001026837A1 (en) 1999-10-13 2000-10-13 Spinning device
AT00966466T AT373528T (en) 1999-10-13 2000-10-13 DRIVEN ROLLING DEVICE
DE60036458T DE60036458T2 (en) 1999-10-13 2000-10-13 DRIVEN ROLLING DEVICE
EP00966466A EP1151812B1 (en) 1999-10-13 2000-10-13 Spinning device

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JP2001137962A JP2001137962A (en) 2001-05-22
JP4472071B2 true JP4472071B2 (en) 2010-06-02

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6769281B2 (en) 2002-03-05 2004-08-03 Sango Co., Ltd. Method and apparatus of producing a columnar member container
JP4584292B2 (en) * 2007-07-31 2010-11-17 日本スピンドル製造株式会社 Drawing machine
JP4598035B2 (en) * 2007-08-07 2010-12-15 日本スピンドル製造株式会社 Drawing machine

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* Cited by examiner, † Cited by third party
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JPS53119777A (en) * 1977-03-30 1978-10-19 Toshiba Corp Spinning work apparatus
JPH058002Y2 (en) * 1987-06-03 1993-03-01
JP3149204B2 (en) * 1991-05-28 2001-03-26 臼井国際産業株式会社 Pipe cutting method and pipe cutting device

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