JPS59210316A - Calculating device of plate thickness - Google Patents
Calculating device of plate thicknessInfo
- Publication number
- JPS59210316A JPS59210316A JP8413383A JP8413383A JPS59210316A JP S59210316 A JPS59210316 A JP S59210316A JP 8413383 A JP8413383 A JP 8413383A JP 8413383 A JP8413383 A JP 8413383A JP S59210316 A JPS59210316 A JP S59210316A
- Authority
- JP
- Japan
- Prior art keywords
- plate thickness
- outer diameter
- diameter value
- calculated
- turn
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明のハする技術分野〕
この発明は１巻戻機に巻かれたスｐ Ｉ）ツブを払い出
す際に、現在巻かれている長さく残長）の予測に必要な
ストリップの板厚を計算する装置に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a method for predicting the currently wound length and remaining length of sprockets wound on an unwinding machine when unwinding them. This invention relates to a device for calculating the required thickness of the strip.
従来、この種の板厚計算装置として、＠戻機、に巻かれ
ているストリップの外径変化をその払い出したストリッ
プのターン数で除することにより板厚を計算する方式が
知られていえ。第１図は、この種の計算方式を示す説明
図である。Conventionally, as this type of sheet thickness calculation device, there is a known method in which the sheet thickness is calculated by dividing the change in the outer diameter of the strip wound on the return machine by the number of turns of the strip that has been delivered. FIG. 1 is an explanatory diagram showing this type of calculation method.
すなわち、第１図において、参照符号１０は巻尺（幾、
７．２はプライドルロール、／φ、／乙はパルス発生製
放、／とは外径演算装置をそれぞれ示す。しかるに、前
記パルス発生装＠／ｖは巻尺機ｌＯＫ軸結合され巻戻機
１０の回転に応じて所定数のパルスを発生し、またパル
ス発生装ｆｊ′ｉｉｔはプライドルロール／乙に軸結合
されプライドルロール／乙の回転に応じ°Ｃ所定数のパ
ルスを発生するよう構成される。そして、前記外径演算
装置／とは、前記パルス発生装置／４ｔ、／６から出力
されるパルス数に基づいて巻戻機１０の外径値を演算す
る。このようにして、巻戻機１０の／回転毎に巻尺機１
０の外径値を記憶保持し、ｎターン前の外径値Ｄ１と現
在の外径値Ｄ２とから次の関係式を使用して板厚１１を
計算する。That is, in FIG. 1, the reference numeral 10 is a tape measure.
7.2 indicates a priddle roll, /φ, /Otsu indicates a pulse generator, and / indicates an outer diameter calculation device, respectively. However, the pulse generator @/v is shaft-coupled to the tape measure lOK and generates a predetermined number of pulses in accordance with the rotation of the rewinding machine 10, and the pulse generator fj'iit is shaft-coupled to the priddle roll/Oc and generates a predetermined number of pulses according to the rotation of the rewinder 10. It is configured to generate a predetermined number of pulses in °C in accordance with the rotation of the roller. The outer diameter calculation device/calculates the outer diameter value of the rewinding machine 10 based on the number of pulses output from the pulse generators /4t and /6. In this way, for every revolution of the unwinder 10, the tape measurer 1
The outer diameter value of 0 is memorized and held, and the plate thickness 11 is calculated from the outer diameter value D1 n turns ago and the current outer diameter value D2 using the following relational expression.
ｈ ＝ （Ｄ＋ −Ｄ２ ） ／、２ ｎ −−（Ｉ
Ｊしかしながら、実際には、プライドルロール１２とス
トリップＳとの瞬間的なすべり等によシ巻戻機／θの外
径値Ｄ１．Ｄｚが正確に検出されない場合があバ この
結果板厚すの計算に影響し、残長りの計算値が瞬間的に
増加する難点がある。h = (D+ −D2) /, 2 n −−(I
However, in reality, the outer diameter value D1. Dz may not be detected accurately.As a result, the calculation of the plate thickness is affected, and the calculated value of the remaining length increases instantaneously.
なお、前記残長りは、前記のように求められた板厚りと
、巻尺機１０の内径ＤＯとから次式％式％
〔発明の目的〕
本発明の目的は、プライドルロールとストリップの瞬間
的なすべり等により巻尺機に発生する瞬間的な外径の誤
差に起因する板厚計９への影響を軽減し、安定した板厚
の計鏝−を達成し、巻戻機の残長を高精度に算出するこ
とができる板厚計算装置を提供するにある。The remaining length is determined by the following formula % from the board thickness determined as described above and the inner diameter DO of the tape measure 10. [Object of the Invention] The object of the present invention is to calculate the instant This reduces the influence on the plate thickness gage 9 caused by instantaneous outside diameter errors that occur in the tape measure due to mechanical slippage, achieves a stable plate thickness gage, and reduces the remaining length of the unwinding machine. An object of the present invention is to provide a plate thickness calculation device that can calculate plate thickness with high accuracy.
本発明は、巻戻機の払い出しターン数と各ターン毎にお
ける外径値とから板厚を計算する装置において、前記各
ターン毎における外径値を記憶する装置と、この記憶装
置に記憶された各外径値を７次関数に近似させる関数発
生装置と、前記関数発生装置で得られる定数から板厚を
演算する装置と、前記板厚演算装置で算出忌れた板厚お
よびその時の外径値から残長を計算する装置とを設ける
ことを特徴とする。The present invention provides a device for calculating plate thickness from the number of unwinding turns and an outer diameter value for each turn, including a device for storing the outer diameter value for each turn, and a device for storing the outer diameter value for each turn; A function generator that approximates each outer diameter value to a 7th order function, a device that calculates plate thickness from the constant obtained by the function generator, and the plate thickness calculated by the plate thickness calculator and the outer diameter at that time. A device for calculating a remaining length from a value is provided.
すなわち、本発明においては１巻次機の各ターン毎に演
算される外径値を記憶装置に記憶し、これらの外径ｆ１
１を統計的手法すなわち最小二乗法を使用して一次関数
ｔこ近似させ、この−次関数よシ得られる比例定数よシ
板厚を演算することによシ、瞬時的な外径の異常変化に
対して板厚の計算値に対する影響を確実に＠滅すること
ができ、高精度の残長計算が実現される。That is, in the present invention, the outer diameter values calculated for each turn of the first winder are stored in a storage device, and these outer diameters f1
1 is approximated by a linear function t using a statistical method, that is, the method of least squares, and by calculating the plate thickness using the proportionality constant obtained from this -order function, it is possible to calculate the instantaneous abnormal change in the outer diameter. Therefore, the influence of the plate thickness on the calculated value can be reliably eliminated, and highly accurate remaining length calculation can be realized.
従って、前記板厚計算装置において、曲数発生装置は、
現時点におけるまでの各ターン毎における外径値を最小
二乗法によシー次関数に近似させ、この−次関数の一次
変数に対する比例定数を最小二乗法により演算し、得ら
れた比例定数を板厚演算装置に入力するよう構成すれば
好適である。Therefore, in the plate thickness calculation device, the number of tunes generating device is
Approximate the outer diameter value for each turn up to the present time to a cy-order function using the least squares method, calculate the proportionality constant for the linear variable of this −order function using the least squares method, and use the obtained proportionality constant as the plate thickness. It is preferable to configure the information so that it is input to an arithmetic device.
次に、本発明に係る板厚計算装置の実施例につき添付図
面を参照しながら以下詳細に説明する。Next, embodiments of the plate thickness calculation device according to the present invention will be described in detail below with reference to the accompanying drawings.
第一図は１本発明に係る板厚計算装置の一実施例を示す
ブロック回路図である。なお、説明の便宜上２８／図に
示す構成部分と同一の４１”、！底部分については同一
の参照符号を付して詳細な説明は省略する。すなわち、
第、２図においで、ストリップＳをＢ［定の外径寸法を
もって巻方１した巻戻機１０とこの巻尺機ＩＯに巻着さ
れたスＩ・リップＳの払い出し作用を行うプライドルロ
ール／コに対し、それぞれパルス発生装置／≠。FIG. 1 is a block circuit diagram showing an embodiment of a plate thickness calculation device according to the present invention. For convenience of explanation, the same reference numerals are given to the 41" and ! bottom parts that are the same as the constituent parts shown in the 28/figures, and detailed explanations will be omitted. That is,
In FIG. 2, a rewinding machine 10 which winds a strip S with a certain outer diameter dimension 1 and a priddle roll/coil that performs the action of discharging the strip S wound on the tape measure machine IO are shown. For each pulse generator/≠.
／２を軸結合し、これらのパルス発生装置／り。/2 are axially coupled and these pulse generators are connected.
／２の発生パルスを入力して巻尺機１０の外径値を演算
する外径演算装置／とを設ける。そして、この外径′１
２ｉｊＷ装置／どは、例えば巻尺機ｌθがｎ回転すれば
ｎ個の外径値を演算し、この演算された外径値をその都
度外径記憶装置２０に記憶するよう＋１ケ成する。また
、前記夕）径記憶装＠−〇にｎ個の外径値が記憶された
ことは、パルス発生装置／≠の出力パルス数を計数する
払い出しターン数カウンタ２２のカウント数で確認され
る。以上の構成は、前述した従来の板厚計算装置の構成
と基本的に同じである。An outer diameter calculation device/ is provided which calculates the outer diameter value of the tape measure machine 10 by inputting the generated pulse of /2. And this outer diameter '1
For example, when the tape measure lθ rotates n times, the 2ijW device/etc. calculates n outer diameter values and stores the calculated outer diameter values in the outer diameter storage device 20 each time. Further, the fact that n outer diameter values are stored in the diameter memory device @-〇 is confirmed by the count number of the payout turn counter 22 that counts the number of output pulses of the pulse generator/≠. The above configuration is basically the same as the configuration of the conventional plate thickness calculation device described above.
しかるに、不発Ｆ！Ａ装置においては、前記外径記憶装
置２０に記憶されている外径値を最小二乗法で７次関数
に近似する関数発生装置、２≠と。However, the dud F! In device A, a function generator, 2≠, approximates the outer diameter value stored in the outer diameter storage device 20 to a 7th order function by the method of least squares.
前■ピ開数発生装置白で求められる′重数から板厚を演
算する板厚演３−４装飯コロと、この板厚演算装置−２
６で求められた板厚およびその時の巻戻機１０の外径値
よジ残＊Ｌを鏝、出する残長計舞装置２ｇとを設けるこ
とに％徴とする。Previous ■ Plate number generator 3-4 plate thickness calculation device that calculates plate thickness from the multiplicity number determined by white and this plate thickness calculation device-2
The plate thickness obtained in step 6 and the outer diameter value of the unwinding machine 10 at that time are expressed as percentages for the provision of the trowel and the remaining length measuring device 2g.
次に、前述した構成からなる不発明に係る板厚計３１装
置の作用につき説明する。Next, the operation of the inventive plate thickness gage 31 device having the above-described configuration will be explained.
今、％戻機１０が７回転する間にパルス発生装置／≠の
発情するパルス数をＰｌ一方プライドルロール／２が１
回転する間にパルス発住装置／乙の発信するパルス数を
ＰＢとする。しかるに、ストリップＳは、連続している
ものであることから、巻戻機１０が７回転する間にパル
ス発生装置／６の発信するパルス数をＰＢ′とすれば、
巻ｉ１．Ｑ ／ ０の外径りは、次式で求められる。Now, while the % return machine 10 rotates 7 times, the number of pulses generated by the pulse generator/≠ is Pl, while the pride roll/2 is 1
Let PB be the number of pulses emitted by the pulse generator/B while rotating. However, since the strip S is continuous, if the number of pulses transmitted by the pulse generator/6 during the seven rotations of the unwinding machine 10 is PB', then
Volume i1. The outer diameter of Q/0 is determined by the following formula.
この場合、ＤＢはプライドルロール／ｌの外径であシ、
また巻戻機／Ｑの７回転の検出はパルス発生装ｆｆｉ：
／４’の発情するパルスを耐性することでＩＪ足できる
。In this case, DB is the outer diameter of the priddle roll/l,
In addition, the detection of 7 revolutions of the rewinding machine/Q is performed by the pulse generator ffi:
You can add IJ by resisting the /4' estrous pulse.
従って、外径演＞’ｒ−装ｆｉ１／ざは、前記式（３）
に基づいて巻戻機／ｌめ外径りを演算し、拘られた外径
値を外径記憶装置２０に記ｔ、’ｊする。この外径記憶
装置、２０は、巻戻機１０のｎターン前の外径値まで記
憶できるサイクリック構造をイ］する記憶装置であり、
現在の外径値からｎターン前までの外径値を常に記憶し
ている。Therefore, the outer radius>'r-equipment fi1/za is given by the above formula (3)
The rewinding machine/lth outer diameter is calculated based on , and the determined outer diameter value is recorded in the outer diameter storage device 20 t,'j. This outer diameter storage device 20 is a storage device having a cyclic structure capable of storing up to the outer diameter value of n turns before the rewinding machine 10,
The outer diameter values from the current outer diameter value to n turns ago are always stored.
次いで、巻戻機／θがｎ回転し、外径記憶装＄２０に外
径値のデータがｎ個記憶されたことを払い出しターン数
カウンタ２２のカウント叔と確認する。Next, the rewinding machine /θ rotates n times, and the count value of the payout turn counter 22 confirms that n pieces of data on outer diameter values are stored in the outer diameter storage device $20.
このようにして、外径り己１：ζ装証−〇に、ｊ己１．
仏されたｎ個のカ径値ｙ１＋３’２＋７３・・・・・・
ｙｎ （ここで”Ｉｎは最り１の外径値であり、ｙｌは
ｎターン前の外径値である）を、関数発生装置２≠によ
シ、最小二乗法を使用して第３図および次式で示すよう
に７次関数に近似する。In this way, the outside diameter is 1: ζ equipment - 〇, j is 1.
The calculated n diameter values y1+3'2+73...
yn (here, In is the outer diameter value of the last one, and yl is the outer diameter value of the nth turn before) by the function generator 2≠, and using the least squares method, it is calculated as shown in Figure 3. and is approximated to a 7th order function as shown in the following equation.
ｙ ＝ ａ 十ｂ ｘ ・・・・・・・・・・・
・・・・（４）最小二乗法を使用すると、前記式（４）
のｂは次式によって求めることができる。y = a 10 b x ・・・・・・・・・・・・
...(4) Using the least squares method, the above formula (4)
b can be determined by the following equation.
巻戻機１０の７回転毎に外径を計算するものとすれば、
Ｘ ｉ ： ｉであるから、前記式（５）は次式で示さ
れる。Assuming that the outer diameter is calculated every 7 rotations of the unwinding machine 10,
Since X i :i, the above formula (5) is expressed as the following formula.
前記すが求まれは、板厚りは次式で求められる。The plate thickness can be determined using the following formula.
ｈ −−−・・・・・・・・・・・・・・・・・山・
（刀前記式（６１、（７）よシ分母を求めれば次式で示
される。h −−−・・・・・・・・・・・・・・・・・・Mountain・
(Using equations (61, (7) above) and finding the denominator, it is shown by the following equation.
一方、前記式＋６） 、 （７）よシ分子を求めれば次
式で示される。On the other hand, if the molecule is calculated from the above formulas +6) and (7), it is expressed by the following formula.
のって、板厚すは次式で求められる。Then, the plate thickness can be calculated using the following formula.
従って、板厚演算装置、２乙は、前記式（１０１に基づ
いて板厚りを演算する。Therefore, the plate thickness calculating device 2B calculates the plate thickness based on the above formula (101).
しかる後、残長計算装ｊ９．．２ｇは、前記板厚演算装
置２乙で算出された板厚りと、その時の巻戻機１０の外
径値Ｄ（外径演算装置／♂で算出される）とから１前記
式（２）に基づいて残長Ｌ−〔発明の効果〕
前述した実施例から明らかなように、本発明によれば、
ｎ個の巻戻機／θの外径値による近似関数によって、ス
トリップの板厚を算出するため、第３図に示すように、
瞬時的な外径の異常変化に対して板厚の計算値に対する
影響を確実に軽減することができる。特に、前記巻尺機
１０の外径値による近似関数は、巻戻機／θの／回転毎
に発生させて板厚りの演算と残長りの計算とを行うため
、実際のストリップの板厚の変動に充分追従して高８’
Ｎ度の残長計算を実現することができる。After that, use the remaining length calculation device j9. ．． 2g is calculated from the plate thickness calculated by the plate thickness calculating device 2B and the outer diameter value D of the rewinding machine 10 at that time (calculated by the outer diameter calculating device/♂). Based on the remaining length L - [Effects of the Invention] As is clear from the above-mentioned embodiments, according to the present invention,
In order to calculate the thickness of the strip using an approximation function based on the outer diameter value of n unwinders/θ, as shown in Fig. 3,
It is possible to reliably reduce the influence of instantaneous abnormal changes in the outer diameter on the calculated value of the plate thickness. In particular, the approximation function based on the outer diameter value of the tape measure 10 is generated every rotation of the unwinder /θ to calculate the plate thickness and the remaining length. The high 8'
It is possible to realize N degrees of remaining length calculation.
以上１本発明の好適な実施例について説明したが、本発
明の板厚計算装置は、巻）Ａ機を自動減速させるために
巻付材料の残長計ｑ、を行う場合に有効に適用すること
ができ、例えば鉄鎖およびプロセッシングラインの巻尺
機や製紙用巻戻様に好適に応用することができる。その
他、本発明の精神を逸脱しない範囲内において種々の設
計変更をなし得ることは勿論である。Although the preferred embodiment of the present invention has been described above, the plate thickness calculation device of the present invention can be effectively applied to measuring the remaining length q of the wrapping material in order to automatically decelerate the machine A. It can be suitably applied to, for example, tape measure machines for iron chains and processing lines, and unwinding devices for paper manufacturing. It goes without saying that various other design changes can be made without departing from the spirit of the invention.
第７図は従来の一般的な板厚計算装置の基本構成を示す
ブロック説明図、第２肉は本発明に係る板厚計算装置の
一芙施例を示すブロック回路内、第３因は第２図に示す
関数発生装置の動作特性を示す特性線図である。
１０・・・巻戻機 ／、２・・・プライド
ルロールｌグ、ｌ乙・・・パルス発生装置 ／Ｉ・・・
外径演算装置、２≠・・・関数発生装置 ２ｚ・・・
板厚演算装置ム−・・残長割算装置
ＦＩＧ、３FIG. 7 is a block explanatory diagram showing the basic configuration of a conventional general plate thickness calculation device. FIG. 3 is a characteristic diagram showing the operating characteristics of the function generator shown in FIG. 2; 10...Rewinder /, 2...Pridle roll lug, lOt...Pulse generator /I...
Outer diameter calculation device, 2≠...Function generator 2z...
Plate thickness calculation device M... Remaining length division device FIG, 3
Claims (1)
外径値とから板厚を計算する装置において、前記各ター
ン毎における外径値を記憶する装置と、この記憶装置に
記憶された各外径値を１次関数に近似させる関数発生装
置と、前記関数発生装置で得られる定数から板厚を演算
する装置と、前記板厚演算装置で算出された板厚および
その時の外径値から残長を計算する装置とを設けること
を特徴とする板厚計算装置。 （２、特許請求の範囲第１項記載の板厚計算装置におい
て、関数発生装置は、現時点におけるｌでの各ターン毎
における外径値を最小二乗法により一次関数に近似させ
、この−次関数の一次変数に対する比例定数を最小二乗
法により漬）とし、得られた比例定数を板厚演算装ｕ１
に入力するよう得成してなる板厚計！１−装Ｂス。(1) In a device that calculates plate thickness from the number of turns of a tape measure and the outer diameter value for each turn, there is a device for storing the outer diameter value for each turn, and each outer diameter value stored in this storage device. a function generator that approximates a diameter value to a linear function; a device that calculates plate thickness from a constant obtained by the function generator; 1. A plate thickness calculation device, comprising: a length calculation device. (2. In the plate thickness calculation device according to claim 1, the function generating device approximates the outer diameter value for each turn at the current point l to a linear function by the method of least squares, and The proportional constant for the primary variable is determined by the least squares method, and the obtained proportional constant is calculated using the plate thickness calculation device u1.
A plate thickness gauge that can be used to input data! 1-Installation B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8413383A JPS59210316A (en) | 1983-05-16 | 1983-05-16 | Calculating device of plate thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8413383A JPS59210316A (en) | 1983-05-16 | 1983-05-16 | Calculating device of plate thickness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59210316A true JPS59210316A (en) | 1984-11-29 |
| JPH0229161B2 JPH0229161B2 (en) | 1990-06-28 |
Family
ID=13822000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8413383A Granted JPS59210316A (en) | 1983-05-16 | 1983-05-16 | Calculating device of plate thickness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59210316A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6473211A (en) * | 1987-09-14 | 1989-03-17 | Anritsu Corp | Apparatus for measuring residual length of tape |
| JPH02196913A (en) * | 1989-01-26 | 1990-08-03 | Matsushita Electric Works Ltd | Measuring instrument for wound diameter of wound material |
| CN111102952A (en) * | 2018-10-26 | 2020-05-05 | 株式会社安川电机 | Method, device, equipment and system for determining thickness and diameter of coiled material |
| CN111498567A (en) * | 2020-04-24 | 2020-08-07 | 深圳市百盛传动有限公司 | Method for calculating material thickness of rewinding machine |
| CN111498566A (en) * | 2020-04-24 | 2020-08-07 | 深圳市百盛传动有限公司 | Method for calculating roll diameter of rewinding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855809A (en) * | 1981-09-30 | 1983-04-02 | Toshiba Corp | Web thickness detecting device |
-
1983
- 1983-05-16 JP JP8413383A patent/JPS59210316A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855809A (en) * | 1981-09-30 | 1983-04-02 | Toshiba Corp | Web thickness detecting device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6473211A (en) * | 1987-09-14 | 1989-03-17 | Anritsu Corp | Apparatus for measuring residual length of tape |
| JPH02196913A (en) * | 1989-01-26 | 1990-08-03 | Matsushita Electric Works Ltd | Measuring instrument for wound diameter of wound material |
| CN111102952A (en) * | 2018-10-26 | 2020-05-05 | 株式会社安川电机 | Method, device, equipment and system for determining thickness and diameter of coiled material |
| CN111102952B (en) * | 2018-10-26 | 2022-03-22 | 株式会社安川电机 | Method, device, equipment and system for determining thickness and diameter of coiled material |
| CN111498567A (en) * | 2020-04-24 | 2020-08-07 | 深圳市百盛传动有限公司 | Method for calculating material thickness of rewinding machine |
| CN111498566A (en) * | 2020-04-24 | 2020-08-07 | 深圳市百盛传动有限公司 | Method for calculating roll diameter of rewinding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0229161B2 (en) | 1990-06-28 |
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