JPH0354009B2 - - Google Patents
Info
- Publication number
- JPH0354009B2 JPH0354009B2 JP62180488A JP18048887A JPH0354009B2 JP H0354009 B2 JPH0354009 B2 JP H0354009B2 JP 62180488 A JP62180488 A JP 62180488A JP 18048887 A JP18048887 A JP 18048887A JP H0354009 B2 JPH0354009 B2 JP H0354009B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- roll
- shaft
- frame
- wire
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
- B21B31/24—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
- B21B31/06—Fastening stands or frames to foundation, e.g. to the sole plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/07—Adaptation of roll neck bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
- B21B13/12—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process axes being arranged in different planes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/36—Spacers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
- B21B35/025—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills for stretch-reducing of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/10—Driving arrangements for rolls which have only a low-power drive; Driving arrangements for rolls which receive power from the shaft of another roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
- B21B35/141—Rigid spindle couplings, e.g. coupling boxes placed on roll necks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Metal Extraction Processes (AREA)
Description
【発明の詳細な説明】
(産業上の利用分野)
この発明は極めて細い線を成形する伸線圧延装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a wire drawing and rolling apparatus for forming extremely thin wire.
(従来の技術)
従来、金属線を細く加工するには、通常圧延工
程で6mmφ(特殊な場合に3mmφ)まで行い、更
に小径の線材に塑性加工するには、引抜方法が採
用されていた。またこのような塑性加工方法に
は、加圧による方法と引抜伸線による方法とあ
り、夫々材料の特質に応じた方法を採用してい
た。例えば比較的脆い性質の材料を塑性加工する
には、加圧を主とし、伸び易い性質の材料は引抜
を主として加工していた。また引抜加工には穴ダ
イスを用いる場合と、ローラダイスを用いる場合
があるが、ローラダイスは穴ダイスより引抜作業
が一層容易、かつ効果的とされていた(例えば特
公昭58−17686号)。(Prior art) Conventionally, in order to process metal wires into thinner diameters, a normal rolling process was used to process wires up to 6 mmφ (3 mmφ in special cases), and a drawing method was used to plastically process the wire rods into smaller diameter wires. In addition, such plastic working methods include a method using pressure and a method using drawing wire drawing, and each method has been adopted depending on the characteristics of the material. For example, in order to plastically process relatively brittle materials, pressurization is primarily used, while materials that are easily stretched are primarily processed by drawing. In addition, there are cases in which a hole die is used for the drawing process, and there are cases in which a roller die is used, but the drawing process with a roller die is said to be easier and more effective than with a hole die (for example, Japanese Patent Publication No. 17686/1986).
(発明により解決すべき問題点)
前記のように加圧伸線と引抜伸線には夫々特徴
があり、ローラダイスによる引抜伸線は能率向上
の上で多大の効果が認められる。(Problems to be Solved by the Invention) As mentioned above, pressure wire drawing and drawing wire drawing each have their own characteristics, and drawing wire drawing using a roller die is highly effective in improving efficiency.
然し乍ら、引抜伸線は引抜の準備工程におい
て、予め必要な線通り作業に時間を要する点と、
引抜破断の限界から、一パスにおけるリダクシヨ
ン(断面積減少率)の限界は、通常30%〜40%と
される問題点があつた。 However, wire drawing requires time to carry out necessary line alignment work in advance in the preparation process for drawing.
Due to the limit of pull-out breakage, the limit of reduction (reduction rate of cross-sectional area) in one pass is usually 30% to 40%.
また、脆い性質の材料はローラダイスによる伸
線が困難な為に、加圧加工にしなければならない
が、前記公知のローラダイスは、その構造上ロー
ラに駆動力を結合できないので、加圧伸線が不可
能になり、かつ前記リダクシヨン限界による加工
回数の増加は免れないなど、幾多の問題点があつ
た。 In addition, it is difficult to wire-draw brittle materials with roller dies, so they must be subjected to pressure processing. However, the known roller dies cannot connect driving force to the rollers due to their structure, so it is difficult to wire-draw them using pressure processing. There were a number of problems, such as the fact that it became impossible to do so, and the number of processing operations inevitably increased due to the reduction limit.
(問題点を解決する為の手段)
然るにこの発明は、しやこ萬力構造のフレーム
のような四隅を固定できるフレームを用い、これ
に設置した加圧手段の加圧方向に対して直角に圧
延ローラ軸を架設したので、前記従来の問題点を
悉く解決したものである。(Means for Solving the Problems) However, the present invention uses a frame that can be fixed at its four corners, such as a frame with a rigid structure, and a rolling roller is placed perpendicularly to the pressing direction of the pressing means installed on the frame. Since the shaft is installed, all of the above-mentioned conventional problems are solved.
即ちこの発明は、一側を開放した方形のフレー
ムの中央部に圧延ロールを並列架設し、前記方形
フレームの上辺に、圧延ロール軸の加圧手段を設
け、該加圧手段の加圧方向と直角に圧延ロール軸
を架設し、該圧延ロール軸と駆動軸とを連結し、
前記方形のフレームの四隅で上下左右等距離の位
置に夫々取付ボルト孔を設けたことを特徴とする
直列伸線圧延装置である。また圧延ロールは半メ
タル軸受を用い、他面はロールメタルの半円形受
け金としてある。前記駆動軸は、モータ軸と直結
し、又は減速機付モータの出力軸と直結してあ
る。 That is, in this invention, rolling rolls are installed in parallel in the center of a rectangular frame with one side open, and a pressing means for the rolling roll shaft is provided on the upper side of the square frame, and the pressing direction of the pressing means is Erecting a rolling roll shaft at right angles, connecting the rolling roll shaft and a drive shaft,
The series wire drawing and rolling apparatus is characterized in that mounting bolt holes are provided at positions equidistant from the top, bottom, left and right at the four corners of the rectangular frame. Further, the rolling roll uses a semi-metal bearing, and the other side is a semi-circular support made of roll metal. The drive shaft is directly connected to a motor shaft or to an output shaft of a motor with a reduction gear.
(作用)
この発明はローラダイスにおいて、ロールの駆
動軸に入力を直結したので、ロールの加圧力を小
さくして、圧延することにより、恰も引抜時と同
様に直径の小さい線材を効率よく成形することが
できる。また、方形のフレームの四隅に取付ボル
ト孔を設けたので、複数台を同一取付ボルトへ並
列固定できる。(Function) In the roller die, this invention directly connects the input to the drive shaft of the roll, so by rolling with a small pressure force on the roll, it is possible to efficiently form a wire rod with a small diameter in the same way as when drawing. be able to. Also, since mounting bolt holes are provided at the four corners of the rectangular frame, multiple units can be fixed in parallel to the same mounting bolt.
(実施例)
次にこの発明の実施例を第1図および第2図に
ついて説明する。(Example) Next, an example of the present invention will be described with reference to FIGS. 1 and 2.
即ち一側を開放した方形のフレーム1の上辺中
央部に加圧ねじ2を螺合し、前記加圧ねじ2の下
方に、これと直角に圧延ロール3,3aを架設
し、前記圧延ロール3,3aの軸4,4aは、前
記加圧ねじ2の下端に当接した上部軸受5とフレ
ーム1の下辺上に設けた下部軸受6間に配設す
る。前記上部軸受5は、圧延ロール3の軸4の上
半部のロールベアリング7を覆い、下部軸受6は
圧延ロール3aの軸4aの下半部のロールベアリ
ング7を覆うようになつている。前記圧延ロール
3aの駆動軸8には、カツプリング9を介してモ
ータ10の出力軸11が連結されている。前記圧
延ロール3の軸に配置したロールベアリングの下
半部は、覆23に覆われ、圧延ロール3aの軸に
配置したロールベアリング7の上半部は、覆23
aによつて覆われ、前記覆23,23aは、スプ
リング24によつて保持されている。第1図中1
2は圧延ロール3,3aのスラスト受け板、1
3,13はフレーム1の四隅へ上下左右等距離に
設けた取付ボルト孔、14はモータ取付板であ
る。 That is, a pressure screw 2 is screwed into the center of the upper side of a rectangular frame 1 with one side open, and rolling rolls 3 and 3a are installed below the pressure screw 2 and at right angles thereto. , 3a are disposed between an upper bearing 5 abutting the lower end of the pressure screw 2 and a lower bearing 6 provided on the lower side of the frame 1. The upper bearing 5 covers the roll bearing 7 on the upper half of the shaft 4 of the rolling roll 3, and the lower bearing 6 covers the roll bearing 7 on the lower half of the shaft 4a of the rolling roll 3a. An output shaft 11 of a motor 10 is connected to the drive shaft 8 of the rolling roll 3a via a coupling 9. The lower half of the roll bearing disposed on the shaft of the roll 3 is covered with a cover 23, and the upper half of the roll bearing 7 disposed on the shaft of the roll 3a is covered with the cover 23.
The covers 23, 23a are held by a spring 24. 1 in Figure 1
2 is a thrust receiving plate for the rolling rolls 3, 3a, 1
Reference numerals 3 and 13 designate mounting bolt holes provided at the four corners of the frame 1 at equal distances from top to bottom, left and right, and 14 designates a motor mounting plate.
前記実施例においては、しやこ萬力型フレーム
を用いたが、例えばフレーム1の開放側へスペー
サー(スリーブ)25(第1図中鎖線図示)を介
装し、取付ボルト26で締付ければ、四角枠フレ
ームとなる。しかしこのようなフレームの構造に
は限定されない。 In the embodiment described above, a shiyakomanriki type frame was used, but if a spacer (sleeve) 25 (shown by chain lines in FIG. 1) is inserted on the open side of the frame 1 and tightened with a mounting bolt 26, a square shape can be formed. It becomes a frame. However, the structure of the frame is not limited to this.
前記実施例において、加圧ねじ2の上端のハン
ドル15に設けた小孔16へ細杆17の一端を挿
入してハンドル15を右側又は左側に回転すれ
ば、加圧ねじ2は矢示18、又は19のように昇
降し、これに伴つて上部軸受け5も同方向へ移動
するので(加圧ねじ端へ上部軸受けを回転自在に
取付けてある)、これに伴つて圧延ロール3,3
aの加圧力を調節することができる。ついでモー
タ10を始動すれば、モータ軸11の回転により
圧延ロール3aが第2図中、矢示20aの方向に
回転するので、加工すべき線材21は強く引張る
ことなく、矢示22の方向へ繰り出され、圧延ロ
ール3も矢示20の方向に回転して線材は所定の
太さに圧延される。 In the above embodiment, if one end of the thin rod 17 is inserted into the small hole 16 provided in the handle 15 at the upper end of the pressure screw 2 and the handle 15 is rotated to the right or left, the pressure screw 2 will move as shown by the arrow 18. or 19, and the upper bearing 5 also moves in the same direction (the upper bearing is rotatably attached to the end of the pressure screw).
The pressing force of a can be adjusted. Next, when the motor 10 is started, the rotation of the motor shaft 11 causes the rolling roll 3a to rotate in the direction of the arrow 20a in FIG. The wire is fed out, and the rolling roll 3 is also rotated in the direction of arrow 20 to roll the wire to a predetermined thickness.
前記実施例において、取付ボルト孔13,13
aを設けたので、第3図に示すように機台27
上、突部29,29aへ架設した取付ボルト2
8,28a,28b,28cへ、前記方形のフレ
ーム1の四隅に設けた取付ボルト孔13,13a
を利用して圧延装置を並列固定することができ
る。前記において各圧延装置は夫々独立して圧下
力、断面形状を設定できるので、単一圧延機で、
圧延条件を変えて複数パス圧延したものと同様の
加工を、1パスで達成することができる。 In the embodiment, the mounting bolt holes 13, 13
a, the machine base 27 is installed as shown in Figure 3.
Upper, mounting bolt 2 installed on the protrusion 29, 29a
8, 28a, 28b, 28c, mounting bolt holes 13, 13a provided at the four corners of the square frame 1
Rolling equipment can be fixed in parallel using In the above, each rolling device can independently set the rolling force and cross-sectional shape, so a single rolling mill can
Processing similar to that achieved by multiple passes of rolling by changing rolling conditions can be achieved in one pass.
この発明によれば、圧延ロールのロール直径を
25mm乃至15mmになし得るが、このような溝ロー
ル、又は溝なしのロールは、圧延ロールとしてき
わめて小径のロールであるが、上記サイズのロー
ルを容易に組み込むことが可能である。この結
果、軟質線材、抗張力値20Kgf/mm2以下の場合に
おいては、直径0.3mm、又はこれに相当する断面
に圧延することができるが、この際の圧延速度は
120m/minが可能である。また硬質線材で抗張
力値が80Kgf/mm2以下の場合には、圧延速度30
m/minが可能である。 According to this invention, the roll diameter of the rolling roll is
Although the diameter of such a grooved roll or a roll without grooves is extremely small as a rolling roll, it is possible to easily incorporate a roll of the above-mentioned size. As a result, in the case of soft wire rods with a tensile strength value of 20 kgf/mm 2 or less, it is possible to roll them to a diameter of 0.3 mm or an equivalent cross section, but the rolling speed at this time is
120m/min is possible. In addition, if the tensile strength value of hard wire is 80Kgf/mm2 or less, the rolling speed is 30
m/min is possible.
(発明の効果)
この発明によれば、圧延ロールの軸を駆動軸に
連結したので、圧延ロールは強制駆動されるの
で、引抜伸線によることなく、これと同等の加工
を行い、細線を容易に成形できる効果がある。従
つて比較的脆い材料であつても効率よく細線化す
ることができる。また、方形のフレームの四隅に
上下左右等距離で取付ボルト孔を夫々設けたの
で、同一取付ボルトへ複数の圧延装置を互いに90
度ずらして並列固定し、連続圧延成形することが
できる効果がある。(Effects of the Invention) According to the present invention, since the shaft of the rolling roll is connected to the drive shaft, the rolling roll is forcibly driven, so that the same processing as this can be performed without drawing and drawing, and thin wire can be easily produced. It has the effect of being able to be molded into Therefore, even relatively brittle materials can be efficiently thinned. In addition, mounting bolt holes are provided at the four corners of the rectangular frame at equal distances from the top, bottom, left, and right, so multiple rolling machines can be attached to the same mounting bolt at a 90-degree angle from each other.
It has the effect of being able to be fixed in parallel at different degrees and continuously rolled.
第1図はこの発明の実施例の一部縦断正面図、
第2図は同じく一部を切断し、スラスト受け板を
除去した側面図、第3図はこの発明の装置を複数
並列する場合の一部斜視図である。
1……フレーム、2……加圧ねじ、3,3a…
…圧延ロール、5……上部軸受、6……下部軸
受、10……モータ、11……出力軸、12……
スラスト受け板、13……取付ボルト孔。
FIG. 1 is a partially longitudinal front view of an embodiment of the invention;
FIG. 2 is a partially cutaway side view with the thrust receiving plate removed, and FIG. 3 is a partial perspective view of a plurality of devices of the present invention arranged in parallel. 1... Frame, 2... Pressure screw, 3, 3a...
... Rolling roll, 5 ... Upper bearing, 6 ... Lower bearing, 10 ... Motor, 11 ... Output shaft, 12 ...
Thrust receiving plate, 13...Mounting bolt hole.
Claims (1)
延ロールを並列架設し、前記方形フレームの上辺
に、圧延ロール軸の加圧手段を設け、該加圧手段
の加圧方向と直角に圧延ロール軸を架設し、該圧
延ロール軸と駆動軸とを連結し、前記方形のフレ
ームの四隅で上下左右等距離の位置に夫々取付ボ
ルト孔を設けたことを特徴とする直列伸線圧延装
置。 2 駆動軸はモータの出力軸とした特許請求の範
囲第1項記載の直列伸線圧延装置。[Claims] 1. Rolls are installed in parallel in the center of a rectangular frame with one side open, and a pressure means for a roll shaft is provided on the upper side of the square frame, and the pressure of the pressure means is A series system characterized in that a rolling roll shaft is installed perpendicular to the direction, the rolling roll shaft and a drive shaft are connected, and mounting bolt holes are provided at positions equidistant from each other on the top, bottom, left and right at the four corners of the rectangular frame. Wire drawing and rolling equipment. 2. The series wire drawing and rolling apparatus according to claim 1, wherein the drive shaft is an output shaft of a motor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18048887A JPS63278602A (en) | 1987-07-20 | 1987-07-20 | Series wire drawing device |
| US07/221,917 US4982590A (en) | 1987-07-20 | 1988-07-20 | Roll-forming apparatus for wire stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18048887A JPS63278602A (en) | 1987-07-20 | 1987-07-20 | Series wire drawing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63278602A JPS63278602A (en) | 1988-11-16 |
| JPH0354009B2 true JPH0354009B2 (en) | 1991-08-16 |
Family
ID=16084110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18048887A Granted JPS63278602A (en) | 1987-07-20 | 1987-07-20 | Series wire drawing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63278602A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102397872B (en) * | 2011-11-18 | 2013-04-24 | 绍兴永益金属制品有限公司 | Iron wire molding machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57181703A (en) * | 1981-05-02 | 1982-11-09 | Daido Steel Co Ltd | Shifting rolling device and changing method for roll |
-
1987
- 1987-07-20 JP JP18048887A patent/JPS63278602A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63278602A (en) | 1988-11-16 |
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