JPS63309348A - Pipe forging device - Google Patents
Pipe forging deviceInfo
- Publication number
- JPS63309348A JPS63309348A JP14496887A JP14496887A JPS63309348A JP S63309348 A JPS63309348 A JP S63309348A JP 14496887 A JP14496887 A JP 14496887A JP 14496887 A JP14496887 A JP 14496887A JP S63309348 A JPS63309348 A JP S63309348A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- forging press
- mandrel
- pipe material
- line direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005242 forging Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 claims description 36
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 14
- 238000005336 cracking Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はパイプ鍛造装置に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a pipe forging device.
［従来の技術］
従来、継目無しパイプを製造する装置は、第５図で示す
ように、一対の溝付ロールａ、ａの間に心棒Ｃを挿入し
、パイプ素材すを心棒Ｃに外嵌して溝付ロールａ、ａ間
に送給し、パイプ素材すを溝付ロールａ、ａて押潰して
継目無しパイプを得るようにしている。[Prior Art] Conventionally, as shown in FIG. 5, a device for manufacturing a seamless pipe inserts a mandrel C between a pair of grooved rolls a, a, and externally fits a pipe material onto the mandrel C. The material is fed between grooved rolls a and a, and the pipe material is crushed by the grooved rolls a and a to obtain a seamless pipe.
しかし、溝付ロールａを用いて継目無しパイプを製造す
る装置では、通常、パイプ素材すに対して溝付ロールａ
、ａは数百トン程度の荷重しか掛けられないため、硬度
の高いパイプを製造するためには溝付ロールａを多数配
列して製造ラインを長く構成しなければならない。However, in a device that uses grooved rolls a to manufacture seamless pipes, the grooved rolls a are usually
, a can only carry a load of about several hundred tons, so in order to manufacture a pipe with high hardness, a long production line must be constructed by arranging a large number of grooved rolls a.
そこで斯かる問題を解決するために、心棒に外嵌したパ
イプ素材を鍛造プレスを用いてプレスするようにして継
目無しパイプを製造する装置か提案されている。In order to solve this problem, an apparatus has been proposed for manufacturing a seamless pipe by pressing a pipe material fitted around a mandrel using a forging press.
［発明か解決しようとする問題点〕
しかしながら上記鍛造プレスを用いたパイプ鍛造装置で
は、鍛造プレスで成形を行う時にパイプ素材に温度降下
か起こるとパイプ素材は成形されにくい状態となり、該
成形されにくくなったパイプ素材に鍛造プレスの大きな
荷重を掛けると製造されたパイプにはひびやわれか生じ
てしまう。このことは硬度の高いパイプを製造する場合
に最も顕著に現われ、そのため硬度の高いパイプの製造
は行なえなかった。[Problem to be solved by the invention] However, in the pipe forging device using the forging press described above, if a temperature drop occurs in the pipe material when forming with the forging press, the pipe material becomes difficult to be formed; If a large load from a forging press is applied to the pipe material, the manufactured pipe will develop cracks and cracks. This is most noticeable when manufacturing pipes with high hardness, and therefore it has not been possible to manufacture pipes with high hardness.
又、鍛造プレス装置により大きな荷重をパイプ素材に掛
けるため、製造されたパイプと心棒が一体化して、パイ
プから心棒が引き抜けなくなってしまうという問題が生
じていた。Furthermore, since a large load is applied to the pipe material by the forging press, the manufactured pipe and mandrel become integrated, resulting in the problem that the mandrel cannot be pulled out from the pipe.
本発明は上述の実情に鑑み、鍛造プレスによる成形時の
パイプ素材の温度降下を防止することにより、ひびやわ
れの発生を防止し得るようにし、更に成形後のパイプか
ら心棒を容易に引き抜けるようにしたパイプ鍛造装置を
提供することを目的としたものである。In view of the above-mentioned circumstances, the present invention prevents the temperature drop of the pipe material during forming by a forging press, thereby preventing the occurrence of cracks and creases, and furthermore, makes it possible to easily pull out the mandrel from the pipe after forming. The purpose of the present invention is to provide a pipe forging device that has the following features.
［問題点を解決するための手段］
本発明は、合せ而に縦断面か略円形でライン方向に延び
る空間を形成した上下の金型を近接離反可能に取付けた
鍛造プレスと、ライン方向に延ひる心棒を中心部に挿通
したパイプ素材の上流側端部を把１７ Ｌ且っ該パイプ
素材を上流から前記鍛造プレスの金型空間内に送るライ
ン方向移動可能なマニプレータとて構成されるパイプ鍛
造装置において、前記心棒を、内面にライン方向のテー
パを形成した心棒表面部のセグメントと、該セグメント
のテーパと合致するテーパを外面に形成してセグメント
内部をライン方向移動可能に挿入した主軸と、前記主軸
の内部を中空にして該中空部に挿入した加熱装置とて構
成し、パイプ鍛造装置としたものである。[Means for Solving the Problems] The present invention provides a forging press in which upper and lower molds, which together form a space extending in the line direction with a substantially circular longitudinal section, are attached so as to be able to approach and separate from each other, and Pipe forging consisting of a manipulator movable in the line direction that grasps the upstream end of a pipe material with a spindle inserted through the center (17 L) and feeds the pipe material from upstream into the mold space of the forging press. In the apparatus, the mandrel includes a segment on the mandrel surface portion having an inner surface tapered in the line direction, and a main shaft having a taper formed on the outer surface that matches the taper of the segment and inserted so as to be movable in the line direction inside the segment; The pipe forging device is constructed by making the main shaft hollow and having a heating device inserted into the hollow portion.
［作 用］
従って本発明では、パイプ素材は、マニプレータで鍛造
プレスに送られて行き心棒内の加熱装置で内部から加熱
されつつ鍛造プレスで成形されるため、パイプ素材に掛
ける荷重は小さくて済み、且つ製造されたパイプのひび
やわれの発生か防止される。[Function] Therefore, in the present invention, the pipe material is sent to the forging press by the manipulator, and is heated from the inside by the heating device in the mandrel and formed in the forging press, so the load applied to the pipe material can be small. , and the occurrence of cracks and cracks in the manufactured pipes is prevented.
又、パイプを製造する場合には、パイプ素材に挿入した
心棒の内部の主軸をライン方向に移動しセグメントのテ
ーパに対して主軸のテーパを楔入させ、セグメントの外
径を拡げ、製造したパイプから心棒を引き抜く場合には
、心棒内部の主軸をライン方向反２ｉ側に移動しセグメ
ントのテーパと主軸のテーパを合致させ、セグメントの
外径を縮める。In addition, when manufacturing pipes, the main shaft inside the mandrel inserted into the pipe material is moved in the line direction, and the taper of the main shaft is wedged into the taper of the segment, expanding the outer diameter of the segment. When pulling out the mandrel from the mandrel, the main shaft inside the mandrel is moved to the side opposite to the line direction 2i to match the taper of the segment with the taper of the main shaft, thereby reducing the outer diameter of the segment.
［実 施 例］ 以下、本発明の実施例を図面を参照して説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図乃至第４図は本発明の一実施例の説明図である。1 to 4 are explanatory diagrams of one embodiment of the present invention.
合せ面に縦断面か略円形をし且つ軸線（以下軸線と言う
）かライン方向に向う空間ｌを形成した上下一対の金型
２．３に、該金型２．３を上下に近接離反させる駆動装
置４．５を接続して成る鍛造プレス６を基礎上に据付け
、鍛造プレス６の」二流にライン方向に延びるカイトレ
ール１４を敷設し、ガイトレール１４上にマニプレータ
１５ヲ配置する。The molds 2.3 are vertically approached and separated from a pair of upper and lower molds 2.3 whose mating surfaces have a longitudinal section or a substantially circular shape and a space l facing in the axis (hereinafter referred to as axis) or line direction. A forging press 6 connected to a drive device 4.5 is installed on a foundation, a kite rail 14 extending in the line direction is laid downstream of the forging press 6, and a manipulator 15 is placed on the guide rail 14.
該マニプレータ１５は以下の構成を備えている。The manipulator 15 has the following configuration.
カイトレール１４に沿って移動するローラ１６を備えた
本体１７の上流側をライン方向に伸縮するキャリアシリ
ンダ１８に接続し、本体１７内部にピニオンギア１９を
ａするモータ２０を設け、前記軸線上に存在する操作軸
２１を鍛造プレス６側から本体１７内部に向は本体１７
に設けた軸受２２を介して回転自在に挿通し、操作軸２
１の本体１７内側端に前記ピニオンギア１９と噛合する
ギア２３を取付けると共に操作軸２１の鍛造プレス６側
端にトングヘッド２４を取付け、トングヘッド２４の鍛
造プレス６側端で且つ前記軸線に関して対称の位置に先
端か鍛造プレス６に向って延びる一対のトングレバー２
５．２Ｇの中途部を前記軸線を中心とする円の接線方向
に延びるピン２７．２８で回転可能に枢着し、両トング
レバー２５．２Ｇの後端に開閉ンリンタ２９を接続して
いる。The upstream side of the main body 17 equipped with a roller 16 that moves along the kite rail 14 is connected to a carrier cylinder 18 that expands and contracts in the line direction, and a motor 20 that drives a pinion gear 19 is provided inside the main body 17, and the motor 20 is installed on the axis line. Direct the existing operating shaft 21 from the forging press 6 side to the inside of the main body 17.
It is inserted rotatably through a bearing 22 provided in the operating shaft 2.
A gear 23 that meshes with the pinion gear 19 is attached to the inner end of the main body 17 of 1, and a tong head 24 is attached to the forging press 6 side end of the operating shaft 21, and the tong head 24 is attached at the forging press 6 side end and symmetrically with respect to the axis. A pair of tongue levers 2 extending toward the tip or forging press 6 at the position of
The midway portion of 5.2G is rotatably pivoted by a pin 27.28 extending in the tangential direction of a circle centered on the axis, and an opening/closing printer 29 is connected to the rear ends of both tongue levers 25.2G.
鍛造プレス６に送給するパイプ素材７は、中心部に心棒
９を挿入するライン方向に延びる挿入孔１３を形成する
。The pipe material 7 to be fed to the forging press 6 has an insertion hole 13 in its center extending in the direction of the line into which the mandrel 9 is inserted.
前記心棒９は、縦断面矩形でライン方向に延び中央部外
面にライン方向に延びる複数段のテーパ３０を形成した
主軸３１に対し、下流側端部に鍔３２を有するシリンダ
３３を前記主軸３１の上流側端部に接続し、前記主軸３
１のテーパ３０に合致するテーパ３４を内面に形成し且
つ円を四等分した円弧状の曲面を外面に形成し更に上流
側端部の外面にスプリング受け３５を５設すると共に下
流側端部の外面にスプリング受け３６を凹設したセグメ
ント３７を、前記主軸３１の外面に四つ組合わせて円柱
状の外観を形成し、上流側のスプリング受け３５にセグ
メント３７を主軸３１に向けて付勢するスプリング３８
を挿入してスプリング受け３５を前記シリンダ３３の鍔
３２と共にストッパ部材３９でタガ止めし、下流側のス
プリング受け３６にセグメント３７を主軸３１に向けて
付勢するスプリング４０を挿入してセグメント３７外面
ケら突出しない径のリング４１てセグメント３７をタガ
止めするようにしたものである。更に主軸３１内部を中
空にして加熱装置４２を挿入する。４３はスペーサ、４
４はロータリージヨイントである。The mandrel 9 has a cylinder 33 having a flange 32 at the downstream end of the main shaft 31, which has a rectangular longitudinal section, extends in the line direction, and has a plurality of tapers 30 extending in the line direction on the outer surface of the central part. connected to the upstream end and connected to the main shaft 3
A taper 34 that matches the taper 30 of 1 is formed on the inner surface, and an arc-shaped curved surface obtained by dividing a circle into four equal parts is formed on the outer surface, and five spring receivers 35 are provided on the outer surface of the upstream end. Four segments 37 with spring receivers 36 recessed on the outer surface of the main shaft 31 are combined to form a cylindrical appearance, and the upstream spring receiver 35 urges the segments 37 toward the main shaft 31. spring 38
The spring receiver 35 is held together with the collar 32 of the cylinder 33 by the stopper member 39, and the spring 40 that biases the segment 37 toward the main shaft 31 is inserted into the downstream spring receiver 36, and the outer surface of the segment 37 is inserted into the spring receiver 36 on the downstream side. The segments 37 are held together by a ring 41 with a diameter that does not protrude. Furthermore, the inside of the main shaft 31 is made hollow and the heating device 42 is inserted therein. 43 is a spacer, 4
4 is a rotary joint.
次に、作動について説明すると、先ずパイプ索材７の挿
入孔１３に心棒９をストッパ部材３９か当たるまで挿通
し、心棒９のシリンダ３３を伸長して主軸３１のテーパ
３０の位置をセグメント３７のテーパ３４に対してずら
しセグメント３７を外面に向けて押すことにより心棒９
の外径を拡げ、心棒９を挿通したパイプ素材７の末端（
上流側端部）を開閉シリンダ２９を作動してマニプレー
タ１５のトングレバー２５．２６て把持する。Next, to explain the operation, first insert the mandrel 9 into the insertion hole 13 of the pipe cord material 7 until it hits the stopper member 39, extend the cylinder 33 of the mandrel 9, and adjust the position of the taper 30 of the main shaft 31 to the segment 37. By pushing the offset segment 37 outwardly against the taper 34, the mandrel 9
The end of the pipe material 7 with the outer diameter expanded and the mandrel 9 inserted (
The upstream end) is gripped by the tongue levers 25 and 26 of the manipulator 15 by operating the opening/closing cylinder 29.
パイプ素材７をマニプレータ１５て把持したら、キャリ
アシリンダ１８を伸長してマニプレータ１５を下流側に
移動し、パイプ素材７より突出した心棒９の先端（下流
側端部）を鍛造プレス６の金型２．３間の空間１内に挿
通し更にマニプレータ１５を進めてパイプ素材７の先端
（下流側側端部）を金型２，３間にセットする。Once the pipe material 7 is gripped by the manipulator 15, the carrier cylinder 18 is extended, the manipulator 15 is moved to the downstream side, and the tip (downstream end) of the mandrel 9 protruding from the pipe material 7 is inserted into the mold 2 of the forging press 6. The manipulator 15 is further advanced to set the tip (downstream end) of the pipe material 7 between the molds 2 and 3.
パイプ素材７を鍛造プレス６にセットしたら、心棒９の
内部に設けられた加熱装置４２を作動し、て鍛造プレス
６で成形される直前及び成形中のパイプ素材７を内部か
ら加熱する。After the pipe material 7 is set in the forging press 6, the heating device 42 provided inside the mandrel 9 is activated to heat the pipe material 7 from the inside immediately before and during forming in the forging press 6.
パイプ素材７を加熱したら、鍛造プレス６を駆動し、金
型２，３にてパイプ素材７を成形する。After heating the pipe material 7, the forging press 6 is driven and the pipe material 7 is formed using the molds 2 and 3.
この際パイプ素材７を周方向均一に成形するためにマニ
プレータ１５のモータ２０を間欠的に駆動しパイプ素材
７に回転を与える。At this time, in order to form the pipe material 7 uniformly in the circumferential direction, the motor 20 of the manipulator 15 is intermittently driven to give rotation to the pipe material 7.
パイプ素材７は加熱装置４２により適宜温度に加熱され
ているため、鍛造プレス６で成形される際には容易に成
形される状態となっており、パイプ素材に掛ける荷重は
少なくて良く又成形されてできたパイプにひびやわれが
生じることがない。そのため硬度の高い合金鋼をパイプ
素材７として用いたパイプの製造が可能である。Since the pipe material 7 is heated to an appropriate temperature by the heating device 42, it is in a state where it can be easily formed when it is formed by the forging press 6, and the load applied to the pipe material is small and it can be formed easily. There will be no cracks or creases in the pipes made with this method. Therefore, it is possible to manufacture a pipe using alloy steel with high hardness as the pipe material 7.
こうして、パイプ素材７を順送りしながら同様に成形を
行いパイプを製造する。In this way, the pipe material 7 is molded in the same manner while being fed sequentially to produce a pipe.
パイプ製造終了後心棒９のシリンダ３３を収縮して主軸
３１のテーパをセグメント３７のテーパ３４に対して合
致させることにより心棒９の外径を縮めパイプから心棒
９を容易に引き抜く。After pipe manufacturing is completed, the cylinder 33 of the mandrel 9 is contracted to match the taper of the main shaft 31 with the taper 34 of the segment 37, thereby reducing the outer diameter of the mandrel 9 and easily pulling out the mandrel 9 from the pipe.
尚、本発明は上述の実施例に限定されるものではなく、
心棒の内部に設けた加熱装置は電熱方式或いは加熱流体
給排方式用には発熱体等同種の機能ををする装置を使用
し得ること、その池水発明の要旨を逸脱しない範囲内で
種々変更を加え得ること等は勿論である。It should be noted that the present invention is not limited to the above-mentioned embodiments,
The heating device provided inside the mandrel can be an electric heating type, or a heating element or other device with the same function can be used for the heating fluid supply/discharge type, and various modifications can be made without departing from the gist of the invention. Of course, there are other things that can be added.
［発明の効果］
上記したように、本発明のパイプ鍛造装置によれは、加
熱装置により鍛造プレスで成形する直前或いは成形中の
パイプ素材を加熱できるため、パイプ素材に掛ける荷重
は小さくて良く、又製造されたパイプにひびやわれが生
ずるのを防止し得、更に合金鋼等の硬度の高い材料を用
いて、パイプを製造し得、又、心棒の外径を拡縮てきる
ため製造されたパイプから心棒を容易に引き抜き得る等
の種々の優れた効果を奏し得る。[Effects of the Invention] As described above, the pipe forging apparatus of the present invention allows the pipe material to be heated by the heating device immediately before or during forming in the forging press, so the load applied to the pipe material can be small. In addition, it is possible to prevent cracks and creases from occurring in the manufactured pipe, and it is also possible to manufacture the pipe using a material with high hardness such as alloy steel. Various excellent effects such as being able to easily pull out the mandrel from the pipe can be achieved.
第１図は本発明の一実施例の説明図、第２図は第１図の
■−■矢視図、第３図は引き抜き時の心棒の説明図、第
４図は第３図のＩＶ−ＩＶ矢視図、第５図は従来例の説
明図である。
図中１は空間、２，３は金型、６は鍛造プレス、７はパ
イプ素材、９は心棒、１３は挿入孔、１４はガイトレー
ル、１５はマニプレータ、３０はテーバ、３１は主軸、
３３はンリンダ、３４はテーパ、３７はセグメント、４
２は加熱装置を示す。FIG. 1 is an explanatory diagram of an embodiment of the present invention, FIG. 2 is a view taken along the ■-■ arrow in FIG. -IV arrow view, FIG. 5 is an explanatory diagram of a conventional example. In the figure, 1 is a space, 2 and 3 are molds, 6 is a forging press, 7 is a pipe material, 9 is a mandrel, 13 is an insertion hole, 14 is a guide rail, 15 is a manipulator, 30 is a taper, 31 is a main shaft,
33 is a cylinder, 34 is a taper, 37 is a segment, 4
2 indicates a heating device.
Claims (1)
を形成した上下の金型を近接離反可能に取付けた鍛造プ
レスと、ライン方向に延びる心棒を中心部に挿通したパ
イプ素材の上流側端部を把持し且つ該パイプ素材を上流
から前記鍛造プレスの金型空間内に送るライン方向移動
可能なマニプレータとで構成されるパイプ鍛造装置にお
いて、前記心棒を、内面にライン方向のテーパを形成し
た心棒表面部のセグメントと、該セグメントのテーパと
合致するテーパを外面に形成してセグメント内部をライ
ン方向移動可能に挿入した主軸と、前記主軸の内部を中
空にして該中空部に挿入した加熱装置とで構成したこと
を特徴とするパイプ鍛造装置。1) A forging press in which upper and lower molds, each with a substantially circular longitudinal section and a space extending in the line direction, are attached so that they can approach and separate from each other on the mating surfaces, and a pipe material on the upstream side with a mandrel extending in the line direction inserted through the center. A pipe forging device comprising a manipulator capable of moving in a line direction for gripping an end portion and feeding the pipe material from upstream into a mold space of the forging press, wherein the mandrel is formed with a taper in the line direction on an inner surface. a main shaft formed with a taper that matches the taper of the segment on its outer surface and inserted so as to be movable in the line direction; A pipe forging device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14496887A JPS63309348A (en) | 1987-06-10 | 1987-06-10 | Pipe forging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14496887A JPS63309348A (en) | 1987-06-10 | 1987-06-10 | Pipe forging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63309348A true JPS63309348A (en) | 1988-12-16 |
Family
ID=15374382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14496887A Pending JPS63309348A (en) | 1987-06-10 | 1987-06-10 | Pipe forging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63309348A (en) |
-
1987
- 1987-06-10 JP JP14496887A patent/JPS63309348A/en active Pending
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