JPS58312A - Storing device of roll eccentricity - Google Patents

Storing device of roll eccentricity

Info

Publication number
JPS58312A
JPS58312A JP56099384A JP9938481A JPS58312A JP S58312 A JPS58312 A JP S58312A JP 56099384 A JP56099384 A JP 56099384A JP 9938481 A JP9938481 A JP 9938481A JP S58312 A JPS58312 A JP S58312A
Authority
JP
Japan
Prior art keywords
roll
rolls
eccentricity
signal
roll eccentricity
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
JP56099384A
Other languages
Japanese (ja)
Other versions
JPS6323852B2 (en
Inventor
Kaname Nakagawa
中川 要
Akiyoshi Yamamoto
山本 昭義
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56099384A priority Critical patent/JPS58312A/en
Publication of JPS58312A publication Critical patent/JPS58312A/en
Publication of JPS6323852B2 publication Critical patent/JPS6323852B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58Roll-force control; Roll-gap control
    • B21B37/66Roll eccentricity compensation systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

PURPOSE:To store the wave form of roll eccentricity with high accuracy by storing a roll eccentricity signal while changing a rotational phase difference between upper and lower work rolls in sequence, in a rolling mill of which upper and lower rolls are driven separately. CONSTITUTION:A signal indicating the eccentricity of a roll, in a state of upper and lower work rolls 3 and 4 which are in contact with each other and rotated at the same peripheral speeds, is detected by a load cell 7 to be inputted to an accentricity storing and controlling device 9. On the other hand, rotating angles thetaT and thetaB of upper and lower back-up rolls, outputted from rotational angle detectors 8 and 8 attached to both the back-up rolls 1 and 2 respectively, are inputted to the device 9. The device 9 outputs a roll releasing signal to a thyrister device 11 used for driving a screw-down device to separate the upper and lower rolls. Next, a speed correcting signal is sent to thyrister devices 12 and 13 used for driving the upper and lower rolls, to change the rotational phases of both the rolls and simultaneously to bring both the rolls into contact with each other, and to store the roll eccentricity signal by an amt. equivalent to its one rotation. Thus the roll eccentricity signals are stored in the device 9 while changing the rotational phase difference between both rolls in sequence.

Description

【発明の詳細な説明】 この発明は、上下ロールが個別に駆動される圧延機にお
いて、a−ル偏心の波形を記憶するため息;適用される
装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for memorizing the waveform of roll eccentricity in a rolling mill in which upper and lower rolls are individually driven.

従来、圧延機のロール偏心を記憶するために。Traditionally, to remember the roll eccentricity of a rolling mill.

881図に示すように、上ロール1と下σ−ル2とを相
互a二接触させた状態でその位置を固定し、同一周速で
回転させながら、ロール偏心によりロール間6;作用す
る応力をa−ドセル装置6により計測するという手段が
採られていた。しかしながらこの方法では、上下ロール
のa−ル径の差が小さい場合には、上ロールおよび下a
−ルのロール偏心のビートの1周期を計測するのに長時
間を要するという欠点があった。
As shown in Fig. 881, the upper roll 1 and the lower σ-ru 2 are kept in contact with each other and their positions are fixed, and while rotating at the same circumferential speed, the stress acting between the rolls 6 due to roll eccentricity is A method has been adopted in which the amount is measured by an a-docel device 6. However, in this method, if the difference in the diameters of the upper and lower rolls is small,
- There is a drawback that it takes a long time to measure one period of the beat of the roll eccentricity of the roll.

この発明は、上記の欠点を除去するためになされたもの
で、上ロールおよび下ロール間のロール径差が小さい場
合にも、ロール偏心波形を高精度で記憶できる記憶装置
を提供することを目的としている。
This invention was made to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a storage device that can store roll eccentricity waveforms with high precision even when the roll diameter difference between the upper roll and the lower roll is small. It is said that

ここでこの発明の原理について説明する。上a−ルおよ
び下ロールの偏心量は、その発生原因から、ロールの1
回転を周期とする周期関数となる。
The principle of this invention will now be explained. The amount of eccentricity of the upper and lower rolls is determined by the amount of eccentricity of the rolls due to the cause of their occurrence.
It is a periodic function whose period is rotation.

いま、上ロールおよび下ロールの各偏心量をそれぞれF
?(t)およびFB(tl とすると、これらはつぎの
式で表わされる。
Now, each eccentricity of the upper roll and lower roll is F.
? (t) and FB(tl), these are expressed by the following equations.

F、 (tl =二” −1−E  (aTncosn
ω1t2   n=1 +bTnaimnQl、 t )      ”” (
11F、(tl=−一一一一!=十 註  (a、n0
O1nωBt+bIln−n4111.t)     
  ・・・・・0)ただし 実際に計測される波形はこれらの合成波形となる。これ
をPhiで表わすと(6)式のようになる。
F, (tl = 2” -1-E (aTncosn
ω1t2 n=1 +bTnaimnQl, t ) ”” (
11F, (tl=-1111!=10 Note (a, n0
O1nωBt+bIln-n4111. t)
...0) However, the waveform actually measured is a composite waveform of these. If this is expressed in Phi, it will be as shown in equation (6).

+  E ((a、、+a、n)casnω、 t *
 IXIII nΔω。to=0 −(a、n−aBn)8iInω、teaisnノω、
t+(b Tn+b、、)(Unω、t@ail*s)
ω、t−(bTn−bB、)Signω、t*cO1l
nノωt)・0・・(6) 通常の圧延機では、上下のロール径差はそれぞれのロー
ル径に比べて充分に小さいと考えられる。
+ E ((a,,+a,n)casnω,t*
IXIII nΔω. to=0 −(a, n−aBn)8iInω, teasnω,
t+(b Tn+b,,)(Unω, t@ail*s)
ω, t-(bTn-bB,) Sign ω, t*cO1l
n no ωt)・0 (6) In a normal rolling mill, the difference in diameter of the upper and lower rolls is considered to be sufficiently smaller than the diameter of each roll.

すなわちω)ノω。といえる。In other words, ω)ノω. It can be said.

・ この場合、F(tlは ω。・ In this case, F(tl is ω.

f、=□ 2π を基本波とする振動と、 を基本波とする振動とに分けて考えられる。つまりfl
の振動波形なf、の波形により振幅変調を行ったと考え
られる。この場合、f、はクールのほぼ1回転の周波数
であり、f、はロ、−ル径差により、上ロールと下ロー
ルの位相のずれが360°になる周波数と考えられる。
It can be considered to be divided into vibrations having a fundamental wave of f,=□2π and vibrations having a fundamental wave of . In other words, fl
It is considered that the amplitude modulation was performed by the waveform of the vibration waveform f. In this case, f is the frequency of approximately one rotation of the roll, and f is considered to be the frequency at which the phase difference between the upper roll and the lower roll becomes 360° due to the difference in roll diameter.

このことから、計測される口   □−ル偏心波形をデ
ィジタル記憶する装置において。
From this, in a device that digitally stores the measured mouth eccentricity waveform.

ロールの1回転に対応する波形と、上下ロールの位相差
に対応する波形とに分けて記憶することができる。
The waveform can be stored separately into a waveform corresponding to one revolution of the roll and a waveform corresponding to the phase difference between the upper and lower rolls.

以下、この発明の一実施例について説明する。An embodiment of the present invention will be described below.

第2図はこの発明の記憶装置を4段式圧延機に適用した
場合を示しているが、2段式、6段式その他の圧延機に
も同様に適用できる。第2図において、上バツクアップ
ロール1および下バツクアツプロール2は、ともに個別
に上ワークロール3および下ワークロール4を介して、
それぞれ上ロール駆動電動機5および下ロール駆動電動
機6によって駆動される。
Although FIG. 2 shows a case where the memory device of the present invention is applied to a four-high rolling mill, it can be similarly applied to two-high rolling mills, six-high rolling mills, and other rolling mills. In FIG. 2, the upper back-up roll 1 and the lower back-up roll 2 are both individually passed through the upper work roll 3 and the lower work roll 4.
They are driven by an upper roll drive motor 5 and a lower roll drive motor 6, respectively.

記憶はっぎのようにして行われる。まず上および下ワー
クミール3および4を相互に同一周速で回転させ、つい
で両者を接触させる。この状態でa−ル偏心を示す信号
はロードセル7により検出され、偏心記憶制御装置9に
入力される。一方。
It is done in a similar way to memorization. First, the upper and lower workpieces 3 and 4 are rotated at the same circumferential speed, and then brought into contact with each other. In this state, a signal indicating the a-le eccentricity is detected by the load cell 7 and input to the eccentricity storage control device 9. on the other hand.

上および下バツクアツプロール1および2にそれぞれ取
付けたa−ル回転角度検出器8から偏心記憶制御装置9
に、上バツクアップロール回転角θ。
From the a-roll rotation angle detector 8 attached to the upper and lower back-up rolls 1 and 2, respectively, to the eccentric storage control device 9
, the upper backup roll rotation angle θ.

および下バツクアツプロール回転角08が入力される。and the lower back up roll rotation angle 08 are input.

これらの信号にもとづいて、偏心記憶制御装置9は、a
−ドセル7により検出されたロール偏心信号をロールの
1回転分だけ記憶し、その後。
Based on these signals, the eccentric memory control device 9
- Store the roll eccentricity signal detected by the docel 7 for one revolution of the roll, and then.

圧下装置駆動用サイリスタ装置11にa−ル解放信号を
出力する。これによって上ワークロール3および下ワー
クロール4が分離されるが、この両者は個別に駆動され
るので、相当に同一の位相で回転を続ける。
An a-le release signal is output to the thyristor device 11 for driving the rolling device. This separates the upper work roll 3 and the lower work roll 4, but since both are driven individually, they continue to rotate in substantially the same phase.

つぎに偏心記憶制御装置9は、上ロール駆動用サイリス
タ装置12および下ロール厘動用サイリスタ装置13に
対して、相互に逆の符号を有する速度修正信号を送る。
Next, the eccentric memory control device 9 sends speed correction signals having mutually opposite signs to the upper roll driving thyristor device 12 and the lower roll moving thyristor device 13.

これによって上および下ワークロール6および4の回転
位相が変化し、この位相で上および下ワークロール3お
よび4を接触させ、この状態で前記の同様にロール偏心
信号をロールの1回転分だけ偏心記憶制御袋!9に記憶
する。
This changes the rotational phase of the upper and lower work rolls 6 and 4, brings the upper and lower work rolls 3 and 4 into contact with each other in this phase, and in this state, similarly to the above, the roll eccentricity signal is sent to the eccentricity of the roll by one rotation. Memory control bag! Store in 9.

このようにして上および下ワークミール3および4の回
転位相差を順次に変化させながら、各位相差ごとにロー
ルの1回転分に相当するロール偏心信号をロール偏心記
憶装置9に記憶していく。
In this way, while sequentially changing the rotational phase difference between the upper and lower workpieces 3 and 4, a roll eccentricity signal corresponding to one revolution of the roll is stored in the roll eccentricity storage device 9 for each phase difference.

これによって上および下ワークロール6および4間の径
差により発生するビートの1周期分を記憶することがで
きる。
This makes it possible to store one cycle of beats caused by the difference in diameter between the upper and lower work rolls 6 and 4.

以上のようにこの発明によれば、ロールの1回転ごとに
位相差を順次に変化させながらロール偏心信号が記憶さ
れるので、上下ロール径の差が小さい場合でも、きわめ
て短時間でロール偏心のビートの1周期を計測できると
いう効果が得られる。
As described above, according to the present invention, the roll eccentricity signal is stored while sequentially changing the phase difference every rotation of the roll, so even if the difference between the upper and lower roll diameters is small, the roll eccentricity can be detected in a very short time. This provides the effect of being able to measure one cycle of a beat.

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

第1図は従来のロール偏心記憶装置を示すブロック図、
第2図はこの発明の一実施例によるロール偏心記憶装置
を示すブロック図である。 1・・・上バツクアップロール%2・・・下バツクアツ
プロール、6・・・上ワークロール、4・・・下ワーク
ロール、5・・・上ロール[動電動11.6・・・下ロ
ール駆動電動機、7・・・ロードセル装置、8・・・ロ
ール回転角度検出器、9・・・偏心記憶制御装置、10
・・・圧下装置駆動用電動m%11・・・圧下駆動用サ
イリスタ装置、12・・・ロール駆動用サイリスタ装置
、15・・・下ロール駆動用サイリスタ装置。 なお、図中同一符号は同−又は相当部分を示す。 代理人 葛野信− 手続補正書(自発) 特許庁長官殿 1、事件の表示    特願昭 56−9fjB84号
2、発明の名称 レール偏心記憶装置 3、補正をする者 5、補正の対象 明細書の発明の詳細な説明の欄 6、補正の内容 (1)明細書#!2頁第7行k「ロードセル装置3」と
あるのを10−ドセル装置7」と補正する。 (2)明細書第3頁第4行〜第5行K r FT(リー  ・・・・・(1)」とあるのを次の
ように補正する。 r FT(す=見料  + Σ (a Tnco S 
n ωTt2   n−x 十bTn’sn  ”ωT 1)@・・・・ (1)」
(3)明細書第3頁第8行〜第11行K「ただし・・・
・・・(5)」とあるのを次のように補正する。 [実際に計測される偏心量は(1)及び(2)式を合成
した次式のF(りで表わされる。 F(tl−りりb ま ただし、 ωT=ω0+Δω0   ・・・・・(5)ωB=ω0
−Δωoham−m(5) J(4)明細書第4頁第3
行K (2) r −(bTn−bBo) sin n6Jot e 
cosnΔωt)Jとあるのを r+(bTn−bBn) 5innωo1 ” Cog
 nΔωt)Jと補正する。 (5)明細書第6頁第3行に「ロードセル7」とあるの
を10−ドセル装置7」と補正する。 (61明細書第6頁第7行〜第9行に「が、・・・続け
る。」とあるのを「。」と補正する。 (7)明細−1111F第6頁第16行K「前記の同様
K」とあるのを1前記と同様K」と補正する。 (8)8A細書第6頁第19行〜第20行K「上および
下ワークロール3および4」とあるのを「上バツクアッ
プロール1および下バツクアツプロール2」と補正する
。 (9)明細書第7頁第3行に「上および下ワークロール
3および4」とあるのを「上バツクアップロール1及び
下バツクアツプロール2」とM正する。 以上
FIG. 1 is a block diagram showing a conventional roll eccentric storage device.
FIG. 2 is a block diagram showing a roll eccentricity storage device according to an embodiment of the present invention. 1...Upper back up roll %2...Lower back up roll, 6...Upper work roll, 4...Lower work roll, 5...Upper roll [motorized motor 11.6...Lower Roll drive motor, 7... Load cell device, 8... Roll rotation angle detector, 9... Eccentricity memory control device, 10
... Electric m% for driving the rolling down device 11... Thyristor device for driving the rolling down, 12... Thyristor device for driving the roll, 15... Thyristor device for driving the lower roll. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Makoto Kuzuno - Procedural amendment (voluntary) Mr. Commissioner of the Japan Patent Office 1, Indication of case: Japanese Patent Application No. 56-9fjB84 2, Title of invention: Rail eccentricity storage device 3, Person making the amendment 5, Description of the specification to be amended Detailed Description of the Invention Column 6, Contents of Amendment (1) Specification #! Page 2, 7th line k, "Load cell device 3" is corrected to "10-Dosel device 7". (2) The statement "K r FT (Lee ... (1)" in page 3, lines 4 and 5 of the specification is corrected as follows: r FT (S = viewing fee + Σ ( a Tnco S
n ωTt2 n-x 10bTn'sn "ωT 1) @... (1)"
(3) Page 3 of the specification, lines 8 to 11 K “However...
...(5)" should be corrected as follows. [The amount of eccentricity actually measured is expressed by F(ri) of the following equation, which is a combination of equations (1) and (2). ωB=ω0
-Δωoham-m(5) J(4) Specification page 4, No. 3
Row K (2) r - (bTn-bBo) sin n6Jot e
cosnΔωt)J is r+(bTn-bBn) 5innωo1 ” Cog
nΔωt)J. (5) In the third line of page 6 of the specification, "load cell 7" is corrected to read "10-load cell device 7". (In the 61st specification page 6th line 7th to 9th line, ``but...continue.'' is corrected to ``.''.) (7) Specification-1111F page 6th line 16K ``The above (8) 8A Specification, page 6, lines 19 to 20, "Upper and lower work rolls 3 and 4" should be changed to "Upper and lower work rolls 3 and 4". (9) In the third line of page 7 of the specification, "upper and lower work rolls 3 and 4" should be corrected to "upper back-up roll 1 and lower back-up roll 2." “Atsuprol 2”, M corrects.

Claims (1)

【特許請求の範囲】[Claims] 上ロールおよび下σ−ルが各々のロール駆動電動機によ
って個別に駆動される圧延機のa−ル偏心を記憶する装
置において、上記上ロールおよび下a−ルな相互に接触
させながら同一周速で回転させた状態でロール偏心信号
を検出するロードセルと、上記上σ−ルおよび下ロール
の回転角度を個別に検出する回転角度検出器と、上記ロ
ードセルおよび回転角度検出器の出力信号にもとづいて
、上記上ロールおよび下ロールの1回転分のロール偏心
信号を記憶するとともに、上記上a−ルおよび下ロール
をいったん分離して両者間の位相差を所定量だけ変化さ
せたのち再び接触させ、1回転分のロール偏心信号を記
憶する動作を繰り返す偏心記憶制御装置とを備えたロー
ル偏心記憶装置。
In a device for memorizing roll eccentricity of a rolling mill in which an upper roll and a lower roll are individually driven by respective roll drive motors, the upper roll and the lower roll are brought into contact with each other at the same circumferential speed. A load cell that detects a roll eccentricity signal in a rotated state, a rotation angle detector that separately detects the rotation angle of the upper roll and lower roll, and based on the output signals of the load cell and rotation angle detector, The roll eccentricity signals for one rotation of the upper roll and lower roll are stored, and the upper roll and lower roll are once separated and the phase difference between them is changed by a predetermined amount, and then brought into contact again. A roll eccentricity storage device comprising: an eccentricity storage control device that repeats an operation of storing roll eccentricity signals for rotations.
JP56099384A 1981-06-24 1981-06-24 Storing device of roll eccentricity Granted JPS58312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56099384A JPS58312A (en) 1981-06-24 1981-06-24 Storing device of roll eccentricity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56099384A JPS58312A (en) 1981-06-24 1981-06-24 Storing device of roll eccentricity

Publications (2)

Publication Number Publication Date
JPS58312A true JPS58312A (en) 1983-01-05
JPS6323852B2 JPS6323852B2 (en) 1988-05-18

Family

ID=14246012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56099384A Granted JPS58312A (en) 1981-06-24 1981-06-24 Storing device of roll eccentricity

Country Status (1)

Country Link
JP (1) JPS58312A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777411A (en) * 1987-01-22 1988-10-11 Zenith Electronics Corporation Top/bottom active pincushion circuit with ringing inhibit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0652257U (en) * 1992-12-18 1994-07-15 道弘 ▲たか▼倉 Phone-mounted magnifying glass device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52126251A (en) * 1976-04-14 1977-10-22 Ishikawajima Harima Heavy Ind Method of measuring eccentricity of roll

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52126251A (en) * 1976-04-14 1977-10-22 Ishikawajima Harima Heavy Ind Method of measuring eccentricity of roll

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777411A (en) * 1987-01-22 1988-10-11 Zenith Electronics Corporation Top/bottom active pincushion circuit with ringing inhibit

Also Published As

Publication number Publication date
JPS6323852B2 (en) 1988-05-18

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