JPS6240912A - Variable crown roll - Google Patents

Variable crown roll

Info

Publication number
JPS6240912A
JPS6240912A JP18017885A JP18017885A JPS6240912A JP S6240912 A JPS6240912 A JP S6240912A JP 18017885 A JP18017885 A JP 18017885A JP 18017885 A JP18017885 A JP 18017885A JP S6240912 A JPS6240912 A JP S6240912A
Authority
JP
Japan
Prior art keywords
sleeve
roll
pressure
crown
pressure chamber
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
JP18017885A
Other languages
Japanese (ja)
Other versions
JPH0536124B2 (en
Inventor
Yasumasa Nariai
成合 靖正
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP18017885A priority Critical patent/JPS6240912A/en
Publication of JPS6240912A publication Critical patent/JPS6240912A/en
Publication of JPH0536124B2 publication Critical patent/JPH0536124B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02Shape or construction of rolls
    • B21B27/03Sleeved rolls
    • B21B27/05Sleeved rolls with deflectable sleeves

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

PURPOSE:To perform the crown control of the rolling stock even having wider width and narrower width well by forming the roll shell part in the double structure of the outer side sleeve and inner side sleeve and by controlling the oil pressure of the pressure chamber respectively in the oil pressure variable crown roll. CONSTITUTION:A sleeve roll 1 is composed of the outside fluid pressure chamber 51 and inner side fluid pressure chamber 41 constituted by the outside sleeve 5 and inside sleeve 4 and the pressure of the pressure oil from rotary joint 62, 61 is made possible respectively. An ideal crown can be given to the roll 1 therefore even in case of a wide width rolling stock and narrow width rolling stock with the pressure control of the inner and outer pressure chambers 41, 51.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は、銅帯の圧延に用いる可変クラウン・ロールに
関するものである。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a variable crown roll used for rolling copper strip.

(ロ)従来技術 可変クラウン・ロール(以下、VCロールという。)と
は、アーバとスリーブとの間に圧力室を形成し、この圧
力室に加圧流体(例えば、水、油、グリース等)を供給
してロールのクラウンを変化させ、これにより圧延材の
横断面形状(板クラウン)または平坦度(板形状)等を
制御するものである。
(b) Prior art Variable crown roll (hereinafter referred to as VC roll) is a type in which a pressure chamber is formed between an arbor and a sleeve, and pressurized fluid (for example, water, oil, grease, etc.) is injected into this pressure chamber. is supplied to change the crown of the roll, thereby controlling the cross-sectional shape (plate crown) or flatness (plate shape) of the rolled material.

従来のVCロールは、圧延材の幅が広い場合には有効な
りラウン制御ができるが、狭幅の場合には、流体圧力を
変化させても板クラウン量の変化はあまり無かった。そ
の−例を第4図に示す。
Conventional VC rolls are effective in controlling the crown when the width of the rolled material is wide, but when the width is narrow, the amount of sheet crown does not change much even if the fluid pressure is changed. An example of this is shown in FIG.

これは、スリーブの膨張有効幅を圧延機の圧延最大幅を
対象に設計するため、狭幅材に対しては、スリーブの柔
構造効果のため、無荷重時にはロール・クラウンが形成
されても、圧延材により、スリーブ膨張代が圧延材のな
い両サイドに逃げて、所期の板クラウン量が得られない
からである。
This is because the effective expansion width of the sleeve is designed with the maximum rolling width of the rolling mill in mind, so for narrow-width materials, due to the flexible structure of the sleeve, even if a roll crown is formed when no load is applied, This is because due to the rolled material, the sleeve expansion allowance escapes to both sides where there is no rolled material, making it impossible to obtain the desired plate crown amount.

この対策として、スリーブの有効膨張幅を狭くすること
が考えられる。しかし、これは、広幅の圧延材に対して
はスリーブ鍔部が直接板幅にかかるため、不連続なロー
ル・クラウン分布と々す、圧延拐には、エツジ・バック
ル、クォータ・バックル等の異常々平坦不良が発生ずる
おそれがある。
As a countermeasure to this problem, it is conceivable to narrow the effective expansion width of the sleeve. However, for wide rolled materials, the sleeve flange directly covers the width of the sheet, resulting in discontinuous roll crown distribution, and abnormalities such as edge buckles and quarter buckles in rolling strips. There is a risk that flatness defects may occur.

4〜5mにも及ぶ胴長をもつ厚板用ロールにおいて、V
Cロールを導入しようとする場合には、前記のロール・
クラウン形状の逃げ、たわみの問題のほか、所定ロール
・クラウン形状を保つために、厚肉のスリーブを用いる
必要がある。その結果、超高圧の油圧装置を必要とし、
現場使用の条件では実現不可能である。
In plate rolls with a body length of 4 to 5 m, V
When trying to introduce C-roll, the above-mentioned role/
In addition to the problems of crown shape relief and deflection, it is necessary to use a thick sleeve in order to maintain a predetermined roll crown shape. As a result, ultra-high pressure hydraulic equipment is required,
This is not possible under the conditions of field use.

(ハ)発明が解決しようとする問題点 本発明が解決しようとする問題点は、広幅・狭幅の両方
の圧延材に対して有効な板クラウン量の調整ができ、し
かも長い胴長のロールにも適用できるVCロールを得る
ことにある。
(c) Problems to be solved by the present invention The problems to be solved by the present invention are that the amount of plate crown can be adjusted effectively for both wide and narrow rolled materials, and in addition, rolls with long bodies can be The goal is to obtain a VC role that can also be applied.

(ニ)問題点を解決するだめの手段 本発明の可変クラウン・ロールは内側流体通路および外
側流体通路を有するアーμと、該アーμに嵌合しかつ前
記内側流体通路に連通した内側圧力室を形成する狭幅の
内側スリーブと、該内側スリーブを取り囲んで前記アー
μに嵌合しかつ前記外側流体通路に連通した外側圧力室
を形成する広幅の外側スリーブと、前記アーμ端部に回
転自在に取り付けられていて前記内側流体通路および外
側流体通路にそれぞれ独立して連通ずるロータリ・ジョ
イントと、該ロータリ・ジョイントに別個に独立した加
圧流体を供給する流体源とからなる構成によって、−1
−記問題点を解決している。
(d) Means for solving the problem The variable crown roll of the present invention includes an arc having an inner fluid passage and an outer fluid passage, and an inner pressure chamber fitted into the arc and communicating with the inner fluid passage. a narrow inner sleeve forming a narrow inner sleeve, a wide outer sleeve surrounding the inner sleeve and forming an outer pressure chamber that fits in the arm and communicates with the outer fluid passageway; a rotary joint freely mounted and in independent communication with the inner fluid passageway and the outer fluid passageway, and a fluid source supplying a separate and independent pressurized fluid to the rotary joint; 1
-The problems mentioned above have been resolved.

(ホ)実施例 第1図を参照して、本発明のVCロールの構造について
説明する。
(E) Embodiment The structure of the VC roll of the present invention will be explained with reference to FIG.

スリーブ・ロールlの両端のカーム11は慣用の軸受2
によって回転自在に支持される。一方のカーム】1には
慣用のロータリ・ジョイント6が相対回転自在に取り付
けられる。アーμ11の軸心方向にそって内側流体通路
12および外側流体通路13が設けられる。
The cams 11 at both ends of the sleeve roll l are mounted on conventional bearings 2.
is rotatably supported by. A conventional rotary joint 6 is attached to one of the cams 1 so as to be relatively rotatable. An inner fluid passage 12 and an outer fluid passage 13 are provided along the axial direction of the arm μ11.

アーμ11に内側スリーブ4が焼断によって取り付けら
れる。内側スリーブ4とアーμ11との間に内側流体圧
力室41が形成される。圧力室41は通路12をかいし
てロータリ・ジョイント6の内側流体導入部61に連通
される。
The inner sleeve 4 is attached to the arm μ11 by burning. An inner fluid pressure chamber 41 is formed between the inner sleeve 4 and the arm μ11. The pressure chamber 41 is communicated with the inner fluid introduction part 61 of the rotary joint 6 through the passage 12.

アーμ11に内側スリーブ4を取り囲んで外側スリーブ
5が焼断によって取り付けられる。外側スリーブ5とア
ーμ11および内側スリーブ4との間に外側流体圧力室
51が形成される。圧力室51は通路13をかいしてロ
ータリ・ジョイント6の外側流体導入部62に連通され
る。
An outer sleeve 5 is attached to the arm μ 11 by burning, surrounding the inner sleeve 4. An outer fluid pressure chamber 51 is formed between the outer sleeve 5 and the arm μ11 and the inner sleeve 4. The pressure chamber 51 is communicated with the outer fluid introduction part 62 of the rotary joint 6 through the passage 13.

ロータリ・ジョイント6の内側および外側流体導入部6
1および62はそれぞれ別個に独立した刃口圧流体供給
源(図示せず)に連通される。
Inner and outer fluid introduction portions 6 of rotary joint 6
1 and 62 each communicate with a separate and independent edge pressure fluid supply source (not shown).

内側スリーブ4の形状および寸法は、下記の点を考慮に
入れて設計する。
The shape and dimensions of the inner sleeve 4 are designed taking into account the following points.

α、内側圧力室41の無加圧状態時に、内側スリーブ4
の外周面と外側スリーブ5の内周面との間の間隔をスリ
ーブ幅方向中心部において0.1〜1.0朋に設定する
こと。これは、内側圧力室41内の流体圧を外側圧力室
51内の流体圧よりも高くしたとき、内側スリーブ4の
外周面が外側スリーブ5の内周面に直ちに接触して内側
スリーブ4の効果を発揮させるとともに、圧力を低下さ
せたときに内側スリーブ4の影響が直ちに解消するよう
にさせるためである。
α, when the inner pressure chamber 41 is in an unpressurized state, the inner sleeve 4
and the inner peripheral surface of the outer sleeve 5 at the center in the width direction of the sleeve. This is because when the fluid pressure in the inner pressure chamber 41 is made higher than the fluid pressure in the outer pressure chamber 51, the outer circumferential surface of the inner sleeve 4 immediately contacts the inner circumferential surface of the outer sleeve 5, and the effect of the inner sleeve 4 is increased. This is to ensure that the inner sleeve 4 exerts the same effect and to immediately eliminate the influence of the inner sleeve 4 when the pressure is lowered.

b、外側スリーブ5の焼断挿入時に、内側スリーブ4の
外周面と外側スリーブ5の内周面との間の最大間隙を0
.5〜31nmに設定すること。
b. When inserting the outer sleeve 5 by burning, set the maximum gap between the outer circumferential surface of the inner sleeve 4 and the inner circumferential surface of the outer sleeve 5 to 0.
.. Set to 5-31 nm.

これは外側スリーブ5の挿入を容易にするためである。This is to facilitate insertion of the outer sleeve 5.

C0内側スリーブ4の外面形状は樽形状にし中心と両側
端との直径差を0〜10龍とする。
The outer surface shape of the C0 inner sleeve 4 is barrel-shaped, and the difference in diameter between the center and both ends is 0 to 10 degrees.

樽形状にしたのは、内側スリーブ4の制御効果を高める
ためである。
The barrel shape is used to enhance the control effect of the inner sleeve 4.

d、内側スリーブ4の肉厚は内外スリーブの加圧力の種
々の組合せおよび、圧延板幅・圧延荷重の種々の組合せ
に対して、所定のクラウン分布が得られるような肉厚分
布とする。
d. The thickness distribution of the inner sleeve 4 is such that a predetermined crown distribution can be obtained for various combinations of pressing forces of the inner and outer sleeves and for various combinations of rolling plate width and rolling load.

外側スリーブ5の形状および寸法は下記の点を考慮に入
れて設計する。
The shape and dimensions of the outer sleeve 5 are designed taking into account the following points.

α、外側スリーブ5の装着時、すでに装着されだ内側ス
リーブ4およびアーム11の両端の鍔部と互いに干渉せ
ず、容易に装着できる内面形状とすること。
α. When the outer sleeve 5 is attached, the inner surface shape should be such that it does not interfere with the flanges at both ends of the inner sleeve 4 and the arm 11 that have already been attached, and can be easily attached.

b、外側スリーブの肉厚は、内側スリーブの内圧との種
々の組合せおよび圧延材の板幅、圧延荷重の種々の組合
せにより所定のクラウン分布が得られるような肉厚分布
とすること。
b. The wall thickness of the outer sleeve should be such that a predetermined crown distribution can be obtained by various combinations of the internal pressure of the inner sleeve, the width of the rolled material, and the rolling load.

ただし、内面形状が装着時の寸法余裕を得るため制約を
受け、かつ外面形状はワーク・ロールとバックアップ・
ロールとの組合せによる狙いロール・クラウンの制約を
受けるため、限られた範囲内での設計を行わねばならな
い。
However, the inner shape is limited to obtain dimensional margin during installation, and the outer shape is limited to the work roll and backup
Since the target roll crown is limited by the combination with the roll, the design must be done within a limited range.

外(illスリーブのみでのクラウン制御効果を大きく
するには、中央部内厚を小さくすることとなり、本発明
では外面形状は、軽微な樽形状(中央部で凹)とするこ
と。内外スリーブ形状寸法、アーム寸法等の製作寸法実
値はシミュレーションおよび圧延実験により求める。
In order to increase the crown control effect using only the outer (ill sleeve), the inner thickness of the center part must be reduced, and in the present invention, the outer surface shape should be a slight barrel shape (concave at the center part). Shape and dimensions of the inner and outer sleeves. , actual manufacturing dimensions such as arm dimensions are determined through simulations and rolling experiments.

本発明においては、シミュレーションの結果、次のよう
な数値例を用いた。
In the present invention, the following numerical examples were used as a result of simulation.

ロール胴長 :  1650龍 ロール外径 :  1500罷(バックアップ・ロール
) 内側スリーブ胴長:1000mm 内側スリーブ肉厚:13mm(中央部)、16龍(圧力
室端部) 内倶]スリーブ肉厚分布:サイン・カーブ外側スリーブ
肉厚=30朋ストレート 内外スリーブの胴長中心における間隙:0.3mm(無
加圧時) (へ)作 用 本発明のVCロールの作用について説明する。
Roll body length: 1650 mm Roll outer diameter: 1500 lines (backup roll) Inner sleeve body length: 1000 mm Inner sleeve wall thickness: 13 mm (center), 16 mm (pressure chamber end) Inner sleeve wall thickness distribution: Thickness of sine curve outer sleeve = 30 mm Gap between straight inner and outer sleeves at center of body length: 0.3 mm (when no pressure is applied) (f) Effect The effect of the VC roll of the present invention will be explained.

比較的広幅の圧延材に対しては、内側流体圧力室41内
の流体圧を外側圧以下に保ち、外側流体圧力室51内の
流体圧を変化させて外側スリーブ5のクラウンを制御す
る。
For relatively wide rolled materials, the fluid pressure in the inner fluid pressure chamber 41 is kept below the outer pressure, and the fluid pressure in the outer fluid pressure chamber 51 is varied to control the crown of the outer sleeve 5.

比較的狭幅の圧延材に対しては、外側流体圧力室51内
の流体圧を内側用以下に保ち、内側流体圧力室41内の
流体圧を変化させて内側スリーブ4を膨出させ、その結
果、内側スリーブ4が外側スリーブ5を押し上げて、外
側スリーブ5のクラウンを制御する。
For relatively narrow rolled materials, the fluid pressure in the outer fluid pressure chamber 51 is kept below that for the inner sleeve, and the fluid pressure in the inner fluid pressure chamber 41 is changed to bulge the inner sleeve 4. As a result, the inner sleeve 4 pushes up the outer sleeve 5 and controls the crown of the outer sleeve 5.

(ト)効 果 第2図は、外側流体圧力を100に9f/c/L とし
て内側圧力室41内の流体圧力を制御した結果を示す。
(G) Effects FIG. 2 shows the results of controlling the fluid pressure in the inner pressure chamber 41 by setting the outer fluid pressure to 100 to 9 f/c/L.

狭幅の圧延拐に対してもクラウン制御効果が得られるこ
とがわかる。このことは長い胴長のロールにも適用可能
であることを示唆している。
It can be seen that the crown control effect can be obtained even for narrow rolling strips. This suggests that it is also applicable to rolls with long bodies.

第3図は内圧外圧差による板クラウン量の変化を示す。FIG. 3 shows the change in plate crown amount due to the difference in internal and external pressures.

内外スリーブ間の間隙のため、内圧をある程度以上高く
しないと内側スリーブの膨張効果は現われてこないこと
を示す。
Due to the gap between the inner and outer sleeves, the expansion effect of the inner sleeve does not appear unless the internal pressure is increased to a certain level.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明のVCロールの縦断面図。第2図は本発
明のVCロールの内側流体圧力と圧延材の板クラウン量
との関係を各種板幅について求めたシミュレーション結
果。第3図は本発明のVCロールの内側流体圧力と圧延
材の板クラウン量との関係を各種外側流体圧力について
求めたシミュレーション結果。第4図は第2図と同様の
図面であって従来のVCロールについてのシミュレーシ
ョン結果を示す。
FIG. 1 is a longitudinal sectional view of the VC roll of the present invention. Figure 2 shows the simulation results of the relationship between the internal fluid pressure of the VC roll of the present invention and the plate crown amount of the rolled material for various plate widths. FIG. 3 shows the simulation results of the relationship between the inner fluid pressure of the VC roll of the present invention and the plate crown amount of the rolled material for various outer fluid pressures. FIG. 4 is a drawing similar to FIG. 2 and shows simulation results for a conventional VC roll.

Claims (1)

【特許請求の範囲】[Claims] 内側流体通路および外側流体通路を有するアーバと、該
アーバに嵌合しかつ前記内側流体通路に連通した内側圧
力室を形成する狭幅の内側スリーブと、該内側スリーブ
を取り囲んで前記アーバに嵌合しかつ前記外側流体通路
に連通した外側圧力室を形成する広幅の外側スリーブと
、前記アーバ端部に回転自在に取り付けられていて前記
内側流体通路および外側流体通路にそれぞれ独立して連
通するロータリ・ジョイントと、該ロータリ・ジョイン
トに別個に独立した加圧流体を供給する流体源とからな
る可変クラウン・ロール。
an arbor having an inner fluid passageway and an outer fluid passageway; a narrow inner sleeve that fits over the arbor and defines an inner pressure chamber in communication with the inner fluid passageway; and a wide outer sleeve forming an outer pressure chamber communicating with the outer fluid passage; and a rotary sleeve rotatably attached to the arbor end and communicating independently with the inner fluid passage and the outer fluid passage. A variable crown roll comprising a joint and a separate and independent source of pressurized fluid to the rotary joint.
JP18017885A 1985-08-16 1985-08-16 Variable crown roll Granted JPS6240912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18017885A JPS6240912A (en) 1985-08-16 1985-08-16 Variable crown roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18017885A JPS6240912A (en) 1985-08-16 1985-08-16 Variable crown roll

Publications (2)

Publication Number Publication Date
JPS6240912A true JPS6240912A (en) 1987-02-21
JPH0536124B2 JPH0536124B2 (en) 1993-05-28

Family

ID=16078756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18017885A Granted JPS6240912A (en) 1985-08-16 1985-08-16 Variable crown roll

Country Status (1)

Country Link
JP (1) JPS6240912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918035A1 (en) 2006-10-30 2008-05-07 Selema Srl Tension levelling system of a metal strip

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194703U (en) * 1981-06-02 1982-12-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194703U (en) * 1981-06-02 1982-12-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918035A1 (en) 2006-10-30 2008-05-07 Selema Srl Tension levelling system of a metal strip

Also Published As

Publication number Publication date
JPH0536124B2 (en) 1993-05-28

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