JP2007237273A - Squeezing roller - Google Patents

Squeezing roller Download PDF

Info

Publication number
JP2007237273A
JP2007237273A JP2006065854A JP2006065854A JP2007237273A JP 2007237273 A JP2007237273 A JP 2007237273A JP 2006065854 A JP2006065854 A JP 2006065854A JP 2006065854 A JP2006065854 A JP 2006065854A JP 2007237273 A JP2007237273 A JP 2007237273A
Authority
JP
Japan
Prior art keywords
roller
squeezing
steel pipe
squeezing roller
pipe
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
Application number
JP2006065854A
Other languages
Japanese (ja)
Inventor
Hiroshi Kojima
宏 小島
Yoshiaki Takada
佳昭 高田
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.)
Nihon Spindle Manufacturing Co Ltd
Original Assignee
Nihon Spindle Manufacturing Co 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 Nihon Spindle Manufacturing Co Ltd filed Critical Nihon Spindle Manufacturing Co Ltd
Priority to JP2006065854A priority Critical patent/JP2007237273A/en
Publication of JP2007237273A publication Critical patent/JP2007237273A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a squeezing roller capable of preventing generation of any feed mark on a surface of a product when working a tapered steel tube without separately providing any equipment for erasing the feed mark. <P>SOLUTION: The squeezing roller R performs the squeezing on an outer circumference of a work W. In the squeezing roller R in which a presser roller part Ka and a forming roller part Se having different radii of curvature from each other are connected to each other in a roller part 10 coming into contact with the work w, a part of the forming roller part Se continuous to the presser roller part is formed in a straight portion n. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、円筒形素材の外周面に絞り加工を施す絞りローラに関し、特にテーパ鋼管の製造に際して用いる、加工後の製品表面に発生する凹凸を小さくすることのできる絞りローラに関する。   The present invention relates to a squeezing roller that performs a drawing process on an outer peripheral surface of a cylindrical material, and more particularly, to a squeezing roller that can be used for manufacturing tapered steel pipes and that can reduce unevenness generated on a processed product surface.

従来の絞りローラを用いた装置のうち、長尺の鋼管(パイプ)をテーパ鋼管に製造するテーパ鋼管加工機の概略を図4に示す。
このテーパ鋼管の製造に用いるテーパ鋼管加工機1は、長尺のパイプ素材Wをテーパ鋼管に加熱雰囲気下で塑性加工するもので、架体4上に載置するテンション側回転機構台2と、架体5上に載置する駆動側回転機構台3と、両架体4、5間に配設する絞り加工装置Sと加熱装置Hとからなり、テンション側回転機構台2及び駆動側回転機構台3には、それぞれ駆動手段2a、3aを配設し、架体4、5上を軸方向に移行可能に構成する。駆動手段2a、3aの構成は、特に限定されるものではないが、サーボモータや油圧モータ等によって回転するピニオンを、両架体4、5上に敷設したラックに噛み合わせてテンション側回転機構台2、駆動側回転機構台3を移行させるように構成することが好ましい。
FIG. 4 shows an outline of a tapered steel pipe processing machine that manufactures a long steel pipe (pipe) into a tapered steel pipe among conventional apparatuses using squeezing rollers.
A taper steel pipe processing machine 1 used for manufacturing this taper steel pipe is a machine for plastically processing a long pipe material W into a taper steel pipe in a heated atmosphere, and a tension-side rotating mechanism base 2 placed on a frame 4; The drive side rotation mechanism base 3 placed on the frame 5, the drawing device S and the heating device H disposed between the frames 4 and 5, the tension side rotation mechanism table 2 and the drive side rotation mechanism. The table 3 is provided with driving means 2a and 3a, respectively, and is configured to be movable on the frames 4 and 5 in the axial direction. The configuration of the drive means 2a, 3a is not particularly limited, but the tension-side rotating mechanism base is configured by meshing a pinion that is rotated by a servo motor, a hydraulic motor, or the like with racks laid on both the frames 4, 5 2. It is preferable that the drive side rotating mechanism base 3 is configured to be shifted.

駆動側回転機構台3には、軸回転手段3bを配設し、パイプ素材Wを回転駆動させる。テンション側回転機構台2には、同期駆動制御機構(図示せず)によって回動手段を設けてもよいが、ベアリングなどによって回動自在に支持し、単に従動するように構成することが好ましい。   The drive side rotation mechanism base 3 is provided with shaft rotation means 3b to drive the pipe material W to rotate. The tension-side rotation mechanism base 2 may be provided with a rotation means by a synchronous drive control mechanism (not shown), but it is preferable that the tension-side rotation mechanism base 2 is rotatably supported by a bearing or the like and is simply driven.

上記構成のテーパ鋼管加工機1を用いて行うテーパ鋼管の製造方法は、まず、パイプ素材Wのパイプ成形終端側を、ローダ機構(図示省略)や人手によって駆動側回転機構台3の把持装置7に取り付ける。そして、駆動手段3aによって駆動側回転機構台3をテンション側回転機構台2に移動させ、テンション側回転機構台2側でパイプ素材Wのパイプ成形始端側を把持したとき、駆動側回転機構台3の駆動手段3aを停止し、軸回転手段3bによって高速にパイプ素材Wを回転させるとともに、テンション側回転機構台2の駆動手段2aによって図示左側に引張力を付与し、鋼管を順次移送しながら絞り加工装置Sの絞りローラRをパイプ素材Wの周面に当接し縮管(絞り加工)を開始する。   In the method of manufacturing a tapered steel pipe using the tapered steel pipe processing machine 1 having the above-described configuration, first, the pipe forming end side of the pipe material W is gripped by the loader mechanism (not shown) or the gripping device 7 of the driving side rotating mechanism base 3 by hand. Attach to. Then, when the driving side rotating mechanism base 3 is moved to the tension side rotating mechanism base 2 by the driving means 3a and the pipe forming start end side of the pipe material W is gripped on the tension side rotating mechanism base 2 side, the driving side rotating mechanism base 3 is The driving means 3a is stopped, the pipe material W is rotated at a high speed by the shaft rotating means 3b, and a tensile force is applied to the left side of the drawing by the driving means 2a of the tension side rotating mechanism base 2 so that the steel pipe is sequentially transferred and squeezed. The drawing roller R of the processing device S is brought into contact with the peripheral surface of the pipe material W to start contraction (drawing).

テンション側回転機構台2を駆動手段2aにより移行することによって、パイプ素材Wを順次移送する際に、絞りローラRによって加工されるパイプ素材Wに対して引張力を付与することができる。本発明者らの実験によると、パイプ素材の両端に駆動手段2aによるA方向(図4(b)参照)の引張力を約20t、駆動手段3aによる引止力(B方向の引張力(図4(b)参照))を約5t付加させて絞り加工を行うことによって長尺の鋼管(パイプ)をテーパ鋼管に加熱雰囲気下で塑性加工する際に、1回の操作で良好な塑性加工を行うことができる。
尚、引張力や引止力は、パイプサイズや肉厚等の変更に対応して付加力が変わることはいうまでもない。
By moving the tension side rotation mechanism base 2 by the driving means 2a, a tensile force can be applied to the pipe material W processed by the squeezing roller R when the pipe material W is sequentially transferred. According to the experiments by the present inventors, the tensile force in the direction A (see FIG. 4B) by the driving means 2a is about 20 t at both ends of the pipe material, and the holding force (the tensile force in the B direction (see FIG. 4B) by the driving means 3a). 4 (b))))) is added for about 5t, and when a long steel pipe (pipe) is plastically worked into a tapered steel pipe in a heated atmosphere, good plastic working can be performed in one operation. It can be carried out.
Needless to say, the tensile force and the holding force change in accordance with changes in pipe size, wall thickness, and the like.

駆動側回転機構台3の先端に配設した把持装置7が加熱装置Hを通過し、絞り加工装置SのローラRによって、把持装置7に把持されたパイプ素材Wの把持装置7近傍まで絞り加工がなされたとき絞り加工は終了し(図4(b)参照)、テーパ鋼管が製作される。   The gripping device 7 disposed at the tip of the drive side rotation mechanism base 3 passes through the heating device H, and is drawn to the vicinity of the gripping device 7 of the pipe material W gripped by the gripping device 7 by the roller R of the drawing processing device S. The drawing process ends (see FIG. 4B), and a tapered steel pipe is manufactured.

しかし、このテーパ鋼管加工機1による絞り加工の際に用いる絞りローラRは、素材に当接するローラ20の当接部分は、図5に示すように、大径の曲率半径r5(半径は約200mm)からなり、パイプ素材Wを縮管していく加圧ローラ部分Kaと、小径の曲率半径r4(半径は約30mm)からなり、テーパ部分を成形していく成形ローラ部分Seとにわかれ、成形ローラ部分Seはローラ20の頂点部分(加工時の頂点)となる。
このため、図6に示すように、成形ローラ部分Seの曲率半径r4の曲線形状が送り目として製品表面に送り量(送りピッチ)m毎に螺旋状に残り、この送り目が残ると、テーパ加工終了後のメッキ工程で、メッキ処理を施した際に送り目が強く目立ってしまうといった問題があった。
However, as shown in FIG. 5, the drawing roller R used when drawing by the tapered steel pipe processing machine 1 has a large radius of curvature r5 (radius is about 200 mm) as shown in FIG. ), The pressure roller portion Ka for reducing the pipe material W, and the forming roller portion Se for forming the taper portion having a small radius of curvature r4 (radius is about 30 mm). The roller portion Se is the apex portion (the apex at the time of processing) of the roller 20.
For this reason, as shown in FIG. 6, the curved shape of the radius of curvature r4 of the forming roller portion Se remains as a feed on the product surface in a spiral shape for each feed amount (feed pitch) m. In the plating process after the completion of processing, there has been a problem that the feed stitch becomes strongly conspicuous when plating is performed.

そのため、図7に示すように、絞り加工装置Sの絞りローラRによって絞られたパイプ素材Wに対して、その表面に残る螺旋状の送り目を押圧消去するための押圧ローラPを複数配設する方法も採用されている(例えば、特許文献1参照。)。
しかし、この方法では、絞り加工装置Sの他に、押圧ローラPを配設する設備が必要になるとともに、テーパ加工当初は、絞り加工装置Sとテンション側回転機構台2との間に隙間が少なく押圧ローラPは軸芯6から離間した場所に位置する必要があり、テーパ加工が一定に進んだ後に図7に示す位置に来るように、軸芯6と直交する方向に移動させるための機構が必要となり、コストが嵩むといった問題があった。
特開2002−292433号
Therefore, as shown in FIG. 7, a plurality of pressing rollers P are provided for pressing and erasing the spiral feed remaining on the surface of the pipe material W drawn by the drawing roller R of the drawing device S. The method of doing is also employ | adopted (for example, refer patent document 1).
However, in this method, in addition to the drawing device S, equipment for disposing the pressing roller P is required, and at the beginning of the taper processing, there is a gap between the drawing device S and the tension-side rotation mechanism base 2. A mechanism for moving the pressure roller P in a direction orthogonal to the shaft core 6 so that the pressure roller P needs to be located at a position separated from the shaft core 6 and is positioned at a position shown in FIG. There is a problem that the cost is increased.
JP 2002-292433 A

本発明は、上記従来の絞りローラの有する問題点に鑑み、別途送り目を消去するための設備を設けることなく、テーパ鋼管加工において製品表面に送り目の発生することのない絞りローラを提供することを目的とする。   The present invention provides a squeeze roller that does not cause a feed line on a product surface in tapered steel pipe processing without providing a separate facility for eliminating the feed line, in view of the problems of the conventional squeeze roller. For the purpose.

上記目的を達成するため、本発明の絞りローラは、素材の外周に絞り加工を施す絞りローラであって、素材に当接するローラ部分に、異なる曲率半径の加圧ローラ部分と成形ローラ部分とを連ねた絞りローラにおいて、成形ローラ部分の加圧ローラ部分に連続する部分を直線部としたことを特徴とする。   In order to achieve the above object, the squeezing roller of the present invention is a squeezing roller that performs drawing processing on the outer periphery of a material, and a pressure roller portion and a forming roller portion having different radii of curvature are provided on the roller portion that contacts the material. In the continuous squeezing roller, a portion continuous with the pressure roller portion of the forming roller portion is a linear portion.

この場合において、直線部の幅を、素材の1回転当たりの送り量以上とすることができる。   In this case, the width of the straight line portion can be made equal to or greater than the feed amount per rotation of the material.

本発明の絞りローラによれば、成形ローラ部分の加圧ローラ部分に連続する部分を直線部としたから、成形ローラ部分の曲率半径の曲線形状が製品表面に残ることのない絞りローラを提供することができる。   According to the squeezing roller of the present invention, since the portion continuing to the pressure roller portion of the forming roller portion is a straight portion, a squeezing roller in which the curved shape of the radius of curvature of the forming roller portion does not remain on the product surface is provided. be able to.

また、直線部の幅を、素材の1回転当たりの送り量(送りピッチ)以上の長さとすることによって、確実に、送り目を製品の表面に残すことのない絞りローラを提供することができる。   Further, by setting the width of the straight portion to a length equal to or greater than the feed amount (feed pitch) per rotation of the material, it is possible to provide a squeeze roller that does not leave the feed on the product surface. .

以下、本発明の絞りローラの実施の形態を、図面に基づいて説明する。   Embodiments of a squeeze roller according to the present invention will be described below with reference to the drawings.

図1に、従来例と同様のテーパ鋼管製造用のテーパ鋼管加工機に、本発明の絞りローラを用いた例を示す。尚、従来の絞りローラと同様の構造については同一の符号、一連の符号を付し説明を省略する。   FIG. 1 shows an example in which the squeezing roller of the present invention is used in a tapered steel pipe processing machine for manufacturing a tapered steel pipe similar to the conventional example. In addition, the same code | symbol and a series of code | symbol are attached | subjected about the structure similar to the conventional aperture roller, and description is abbreviate | omitted.

この絞りローラRのパイプ素材Wに当接するローラ10は、ブラケット14に回動自在に配設した主軸13に固定し、パイプ素材Wの外周面に当接し、パイプ素材Wを塑性加工することによってテーパ鋼管加工を施すようにしている。   The roller 10 that abuts the pipe material W of the squeezing roller R is fixed to the main shaft 13 rotatably disposed on the bracket 14, abuts on the outer peripheral surface of the pipe material W, and the pipe material W is plastically processed. Tapered steel pipe processing is applied.

そして、このローラ10のパイプ素材Wとの当接部分は、大径の曲率半径r2(半径は約200mm)で、パイプ素材Wを縮管していく加圧ローラ部分Kaと、小径の曲率半径r1(半径は約20mm)で、テーパ部分を成形していく成形ローラ部分Seとが連なって形成されるもので、成形ローラ部分Seのうち、加圧ローラ部分Kaに連続する部分が絞りローラ10の頂点部分(加工時の頂点)となり、この部分を直線部nとなるようにしている。加圧ローラ部分Kaの成形ローラ部分Se近傍は中径の曲率半径r3(半径は約30mm)とされている。   The contact portion of the roller 10 with the pipe material W has a large-diameter curvature radius r2 (radius is about 200 mm), a pressure roller portion Ka that contracts the pipe material W, and a small-diameter curvature radius. r1 (with a radius of about 20 mm) and formed continuously with a forming roller portion Se for forming a taper portion. Of the forming roller portion Se, a portion that continues to the pressure roller portion Ka is the squeezing roller 10. The apex portion (vertex at the time of processing) is formed, and this portion is made to be the straight line portion n. The pressure roller portion Ka has a medium radius of curvature r3 (radius is about 30 mm) in the vicinity of the forming roller portion Se.

この直線部nの幅Lは、素材Wの1回転当たりの送り量、例えば素材回転1回転当たりでの送り距離が3mmの場合は3mm以上の長さとなるように形成することが好ましく、素材Wとの当接角度αは加工するテーパ鋼管の角度(送り量が1回転3mmで、絞りローラRの送り込み量が0.03mmであれば1/100)と等しくなるように形成する。   The width L of the straight portion n is preferably formed so that the feed amount per rotation of the material W, for example, a length of 3 mm or more when the feed distance per rotation of the material is 3 mm, is 3 mm or more. Is formed to be equal to the angle of the tapered steel pipe to be processed (1/100 when the feed amount is 3 mm per rotation and the feed amount of the squeeze roller R is 0.03 mm).

これにより、素材Wの送り量mのピッチで製品表面に螺旋状に現れる送り目を、成形ローラ部分Seの直線部nによって押し潰すことができ、加工が完了したテーパ鋼管表面には送り目の出ない良好な製品を製作することができ、次工程のメッキ工程が完了した最終製品も見栄えのよい意匠的にも優れた製品の加工を行うことができる。   As a result, the feed line that appears spirally on the product surface at a pitch of the feed amount m of the material W can be crushed by the straight portion n of the forming roller portion Se, and the finish of the tapered steel pipe surface that has been processed is A good product that does not appear can be manufactured, and the final product that has undergone the plating process of the next step can be processed with a good-looking design.

以上、本発明の絞りローラについて、実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。   The squeezing roller according to the present invention has been described based on the embodiments. However, the present invention is not limited to the configurations described in the above embodiments, and the configuration may be changed as appropriate without departing from the spirit of the present invention. It is something that can be done.

以上、本発明の絞りローラは、成形ローラ部分に直線部を設けることによって、製品表面に送り目を生じさせることがないという特性を有していることから、新規の設備でテーパ鋼管の製造に用いるテーパ鋼管加工機に用いることができる他、例えば、既存のテーパ鋼管加工機においても絞りローラを取り替えることによって用いることができる。   As described above, the squeezing roller according to the present invention has a characteristic that a straight portion is provided in the forming roller portion so that no stitches are generated on the product surface. In addition to being able to be used in a tapered steel pipe processing machine to be used, for example, an existing tapered steel pipe processing machine can also be used by replacing the squeeze roller.

本発明の絞りローラの一部断面の正面図である。It is a front view of a partial cross section of the squeeze roller of the present invention. (a)は、図1のX部分の詳細図を、(b)は、(a)のY部分の詳細図である。(A) is a detailed view of the X portion of FIG. 1, and (b) is a detailed view of the Y portion of (a). 本発明の絞りローラによって加工したテーパ鋼管の表面を示す一部切り欠きの概略正面図である。It is a schematic front view of a partially cutaway showing the surface of a tapered steel pipe processed by the squeezing roller of the present invention. テーパ鋼管の製造方法の概略図である。It is the schematic of the manufacturing method of a taper steel pipe. 従来の絞りローラの一部断面の正面図である。It is a front view of the partial cross section of the conventional squeeze roller. 従来の絞りローラで加工したテーパ鋼管の表面を示し。(a)は、一部切り欠きの概略正面図、(b)は、(a)のZ部拡大正面図である。The surface of a tapered steel pipe processed with a conventional squeezing roller is shown. (A) is a schematic front view of a partly cutout, and (b) is an enlarged front view of a Z part of (a). テーパ鋼管加工機に押さえローラを配設した、従来のテーパ鋼管加工機の概略平面図である。It is a schematic plan view of the conventional taper steel pipe processing machine which provided the press roller in the taper steel pipe processing machine.

符号の説明Explanation of symbols

10 絞りローラ
Ka 加圧ローラ部分
Se 成形ローラ部分
n 直線部
m 送り量
10 Drawing roller Ka Pressure roller part Se Forming roller part n Straight part m Feed amount

Claims (2)

素材の外周に絞り加工を施す絞りローラであって、素材に当接するローラ部分に、異なる曲率半径の加圧ローラ部分と成形ローラ部分とを連ねた絞りローラにおいて、成形ローラ部分の加圧ローラ部分に連続する部分を直線部としたことを特徴とする絞りローラ。   A squeezing roller that performs drawing processing on the outer periphery of a material, and a squeezing roller in which a pressure roller portion having a different curvature radius and a molding roller portion are connected to a roller portion that is in contact with the material. A squeezing roller characterized in that a continuous part is a straight part. 直線部の幅を、素材の1回転当たりの送り量以上としたことを特徴とする請求項1記載の絞りローラ。   2. The squeezing roller according to claim 1, wherein the width of the straight line portion is equal to or greater than the feed amount per rotation of the material.
JP2006065854A 2006-03-10 2006-03-10 Squeezing roller Pending JP2007237273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006065854A JP2007237273A (en) 2006-03-10 2006-03-10 Squeezing roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006065854A JP2007237273A (en) 2006-03-10 2006-03-10 Squeezing roller

Publications (1)

Publication Number Publication Date
JP2007237273A true JP2007237273A (en) 2007-09-20

Family

ID=38583314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006065854A Pending JP2007237273A (en) 2006-03-10 2006-03-10 Squeezing roller

Country Status (1)

Country Link
JP (1) JP2007237273A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106890880A (en) * 2015-12-18 2017-06-27 内蒙古航天红岗机械有限公司 One koji bus type lid class is without mould inward turning press rotary wheel mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106890880A (en) * 2015-12-18 2017-06-27 内蒙古航天红岗机械有限公司 One koji bus type lid class is without mould inward turning press rotary wheel mechanism

Similar Documents

Publication Publication Date Title
WO2016203847A1 (en) Pipe bending device
JP6854279B2 (en) Multi-tasking machine and machining method for machining wire rods
JP4591908B2 (en) Pipe bending machine
JP2009279653A (en) Method for bending pipe, rod, profiled section and similar blank, and corresponding device
JP2001105033A (en) Pipe bender
KR100908981B1 (en) Pipe Forming Machine with Banding Function
JP2007268571A (en) Drawing method and apparatus
JP5829670B2 (en) Bending clamp, processing unit and processing equipment
JP2004195484A (en) Pipe bending apparatus
JP2007237273A (en) Squeezing roller
JP2010188406A (en) Pipe bending apparatus and method
JP4610202B2 (en) Heat-treatable shaft enlargement processing equipment
JP2003311368A (en) Shaft thickening method and device for metallic shaft material
JP5285236B2 (en) Pipe bending equipment
KR200351907Y1 (en) Removing device for welding bead of pipe
JP4625320B2 (en) Bending machine
CN108296306A (en) Machine in metal wire rod production method and its equipment and its equipment
KR940003897B1 (en) Forming apparatus and process of flange
JP3424000B2 (en) Color molding equipment
JP2001239427A (en) Female screw machining method of pipe, and its device
JPH06234021A (en) Production method and device of bent tube
JP2005161324A (en) Pipe bending machine and pipe bending method
JP4157111B2 (en) Tapered steel pipe manufacturing method
JPH0333414B2 (en)
JP4412277B2 (en) Turning table for thick plate rolling mill

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080606

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080617

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20081021