Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Reexamination Certificate
1999-12-03
2001-05-15
Tolan, Ed (Department: 3725)
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
C072S008800, C072S011100, C072S011500, C072S012500
Reexamination Certificate
active
06230531
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a rolling data collecting method and system to be used for a tandem hot rolling mill.
2. Related Background Art
So far, collecting of rolling data in a tandem hot rolling mill has been made as follows: The rolling data measuring devices installed for all of the roll stands in the tandem hot rolling mill collected rolling data simultaneously at a timing when a point on the rolled strip a few or several meters away from the leading (or trailing) edge of the rolled strip just enters the stands.
According to the prior art, all rolling data generated at all of the stands are collected at the same timing, so that the obtained rolling data can be said to represent no recognition or consideration for the past rolling history of the rolled strip, thereby resulting in a possible inaccuracy when making the analysis of rolling mechanism or the learning of established calculation method using these rolling data.
SUMMARY OF THE INVENTION
In view of the aforementioned problems, this invention intends to provide a rolling data collecting method and system which can enhance the analysis of rolling mechanism or the learning of established calculation method.
Further, the invention intends to provide a rolling data collecting method and system which can produce a high accuracy of analysis of rolling mechanism, using the rolling data obtained.
Furthermore, the invention intends to provide a rolling data collecting method and system which can enhance the accuracy of the setting and learning for the subsequent sheet and on forward by way of already collected rolling data.
To achieve these above-described purposes, the rolling data collecting method according to the invention which collects rolling data of a rolled strip to be serially rolled by a tandem rolling mill, using a first rolling data measuring means provided at every roll stand and a second rolling data measuring means provided in the rolling line, the method comprising the steps of;
deciding a data-measuring point of a rolled strip by way of the first and second rolling data measuring means;
detecting that the above-decided data-measuring point has reached each stand and the installation position of the second rolling data measuring means; and
collecting the rolling data measured by the first and second rolling data measuring means, every time when the measuring point reached each stand and the second rolling data measuring means.
In other words, using this rolling data collecting method according to the invention, the data-measuring point of a rolled strip is decided by way of the first and second rolling data measuring means, whether the above-decided data-measuring point has reached the every stand and the installation point of the second rolling data measuring means is detected and then the rolling data measured by the first and second rolling data measuring means are collected, every time when the measuring point reached the every stand and the second rolling data measuring means.
Further, the rolling data collecting system according to the invention comprises:
first rolling data measuring means provided at each stand installed from the entry side to the delivery side for obtaining rolling data of a rolled strip to be serially rolled;
second rolling data measuring means provided in the rolling line for obtaining rolling data of the rolled strip;
measuring point decision means for deciding a measuring point on the rolled strip for obtaining rolling data using the first and second rolling data measuring means;
tracking means for detecting that the measuring point has reached each roll stand and the installation position of the second rolling data measuring means; and
rolling data collecting means for obtaining the rolling data measured by the first and second rolling data measuring means every time when the measuring point has reached each stand and the installation position of the second rolling data measuring means.
The second rolling data measuring means may be installed at the delivery side of the tandem rolling mill, so that the measuring point decision means can select (as the suitable measuring point on the rolled strip) the rolling point of the rolled strip at the leading stand, which takes place just at the timing when the leading edge of the rolled strip reached the second rolling data measuring means.
Otherwise, the second rolling data measuring means may be installed at the delivery side of the tandem rolling mill, so that the measuring point decision means can select (as the measuring point on the rolled strip) the rolling point of the rolled strip at the leading stand, which takes place a preset time after the timing when the leading edge of the rolled strip reached the second rolling data measuring means.
The measuring point decision means may select the rolling point of the rolled strip at the leading stand, which takes place a preset time after the time when the leading edge of the rolled strip reached the leading stand, as the measuring point on the rolled strip.
The measuring point decision means may select a point (on a rolled strip) a preset distance away from the leading edge of a rolled strip as the measuring point on the rolled strip.
The measuring point decision means may select a point on a rolled strip as the first measuring point, and then select the rolling point of the rolled strip at the leading stand, which takes place when the first measuring point reached the second rolling data measuring means, as the second measuring point. This procedure is repeated until the rolling operation finishes.
The measuring point decision means may select a point on a rolled strip as the first measuring point, and then select the rolling point of the rolled strip at the leading stand, which takes place a preset time after the timing when the first measuring point reached the second rolling data measuring means, as the second measuring point. This procedure is repeated until the rolling operation finishes.
The tracking means may follow the track of a measuring point on a rolled strip, using a pulse value of a pulse generator at least connected to the motor driving the rolling mill, the roll diameter and forward slip.
The tracking means may follow the track of a measuring point on a rolled strip, using a pulse value of a pulse generator connected to the motor driving the trailing stand, the roll diameter and forward slip, as well as the thickness of the strip at the delivery side of the trailing stand, and the delivery-side thickness of the rolled strip at the measuring point under tracking.
The tracking means may decide how far the measuring point on a rolled strip advanced from the leading stand, using the sheet thickness at the entry and delivery sides of a roll stand, when the tracking means judged that the measuring point on the rolled strip reached the roll stand.
The tracking means may correct the tracking position for the measuring point on a rolled strip, using the distance how far the sheet advanced from the leading stand.
The tracking means may decide reaching times to the rolling mill and the second rolling data measuring means, using the peripheral speed and forward slip of the roll, stand spacing, and the distance between the rolling mill and the second rolling data measuring means. A setting of the calculated reaching times to a timer can follow the track of the measuring point of the rolled strip.
The second rolling data measuring means may be installed at the entry side of a tandem rolling mill. The measuring point decision means selects a point on a rolled strip locating at the second rolling data measuring means as long as the measurements of the rolled strip by the second rolling data measuring means fall into a preset range during a preset period.
When measurements of the second rolling data measuring means keep the preset range after the decision of the measuring point, the measuring point decision means selects the point on a rolled strip locating at the second rolling data measuring means as the measuring point, with a p
Okitani Noriyasu
Tezuka Tomoyuki
Foley & Lardner
Kabushiki Kaisha Toshiba
Tolan Ed
LandOfFree
Rolling data collecting method and system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rolling data collecting method and system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rolling data collecting method and system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2541581