CN108051128B - Method for measuring friction force of coiling side guide plate - Google Patents
Method for measuring friction force of coiling side guide plate Download PDFInfo
- Publication number
- CN108051128B CN108051128B CN201711461056.7A CN201711461056A CN108051128B CN 108051128 B CN108051128 B CN 108051128B CN 201711461056 A CN201711461056 A CN 201711461056A CN 108051128 B CN108051128 B CN 108051128B
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- China
- Prior art keywords
- guide plate
- side guide
- friction force
- measuring
- coiling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
Abstract
The invention belongs to the technical field of coiling machines, and discloses a method for measuring friction force of a coiling side guide plate, which comprises the following steps: under the condition that the coiler is free of steel strips and steel, the opening degree of the servo valve at the transmission side is gradually increased until the side guide plate moves; keeping the opening degree of the servo valve at the transmission side unchanged, and driving the side guide plate to move inwards at a constant speed; acquiring the pressure of a rodless cavity of the side guide plate driving oil cylinder; the pressure of the rodless cavity of the side guide plate driving oil cylinder is the friction force of the side guide plate. The invention provides a method for measuring the friction force of a side guide plate for coiling, which can reliably and accurately measure the friction force condition of the side guide plate under the complex environment of a coiling machine.
Description
Technical Field
The invention relates to the technical field of coiling machines, in particular to a method for measuring friction force of a coiling side guide plate.
Background
The roll shape is abnormal mainly in that a lotus leaf edge and an edge part are rolled up on one side or two sides of a steel roll, the appearance of the steel roll is similar to that of bread, and the steel roll is called a bread roll. Because the edge of the bread roll is rolled up, the plate shape is also bow-back, if the bread roll is normally used for resurrection, the roll is damaged, the plate shape cannot be corrected, and only waste can be judged, so that huge quality loss is caused. The reason for this defect comes from the winding process, in relation to the winding-side guide clamping pressure. The edge of the strip steel is rolled up due to the overlarge clamping pressure of the rolling side guide plates, and then the bread roll is formed. The friction force of the side guide plate influences the setting of the clamping pressure of the side guide plate, but a reliable measuring method under a complex environment is not provided in the prior art.
Disclosure of Invention
The invention provides a method for measuring the friction force of a side guide plate of a coiling machine, which solves the technical problem that a method for measuring the friction force of the side guide plate of the coiling machine is lacked in the prior art.
In order to solve the technical problem, the invention provides a method for measuring the friction force of a coiling side guide plate, which comprises the following steps:
under the condition that a coiler has no steel strip, the opening degree of a servo valve at the transmission side is gradually increased until the side guide plate moves;
keeping the opening degree of the servo valve at the transmission side unchanged, and driving the side guide plate to move inwards at a constant speed;
acquiring the pressure of a rodless cavity of the side guide plate driving oil cylinder;
the pressure of the rodless cavity of the side guide plate driving oil cylinder is the friction force of the side guide plate.
Further, the method further comprises:
dividing the stroke range of the side guide plate into a plurality of continuous measuring sections;
and respectively executing measurement operation on each measurement section to obtain the friction force of the side guide plate of the measurement section.
Further, the length range of the measuring section is 100-200 mm.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the friction force measuring method for the coiling side guide plate, under the condition of no steel belt, the opening degree of a servo valve at the transmission side is gradually increased, the driving force of a side guide plate driving oil cylinder is increased until the side guide plate moves and keeps moving at a constant speed, and at the moment, the resultant force applied to the side guide plate is zero; that is, the friction force and the cylinder driving force are equal in value, so that the friction force of the side guide plate is indirectly obtained by acquiring the pressure of the rodless cavity of the hydraulic cylinder. Based on the basic physics principle, the friction force measurement is convenient and efficient; meanwhile, the dynamic measurement is carried out in the stroke of the side guide plate, the influence of the equipment state in the coiling machine is taken into consideration, the friction value in the actual working environment can be accurately reflected, and the reliability is higher.
Detailed Description
The embodiment of the application provides a method for measuring the friction force of the side guide plate of the coiling machine, and solves the technical problem that a method for measuring the friction force of the side guide plate of the coiling machine is lacked in the prior art.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the description and the specific embodiments, and it should be understood that the specific features in the examples and the examples of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the examples and the examples of the present application may be combined with each other without conflict.
A friction force measuring method of a coiling side guide plate comprises the following steps:
under the condition that a coiler has no steel strip, the opening degree of a servo valve at the transmission side is gradually increased until the side guide plate moves; that is, the driving force is gradually increased to enable the device to enter a uniform motion state after moving, so that a state of balance between the driving force and the friction force is conveniently formed; the phenomenon that the motion state of the side guide plate is influenced by large acceleration generated by large driving force in the moment is avoided.
Keeping the opening degree of the servo valve at the transmission side unchanged, and driving the side guide plate to move inwards at a constant speed; namely, in a certain stroke, the constant speed state is kept, so that more friction measurement data are obtained, and the influence of data fluctuation on the measurement precision and reliability is avoided. Generally, a plurality of measured values are taken in a certain stroke to obtain an average value, or a friction curve is formed through fitting, so that the friction measurement precision is improved.
Acquiring the pressure of a rodless cavity of the side guide plate driving oil cylinder; that is, the friction force is indirectly measured by measuring the pressure of the rodless cavity of the side guide plate driving oil cylinder.
Generally, the friction force of the coiling machine needs to be measured according to different opening degrees because the coiling machine produces products with different specifications, so that the pertinence of the different opening degrees is improved, and the setting of the clamping pressure of the side guide plate is conveniently guided.
Based on this, the method further comprises:
dividing the stroke range of the side guide plate into a plurality of continuous measuring sections; the measurement segment width is usually set according to the specifications of the frequently produced products, so that the friction force of each segment can be measured more accurately.
And respectively executing measurement operation on each measurement section to obtain the friction force of the side guide plate of the measurement section. The measurement data of the plurality of segments may be aggregated to form a friction curve.
Generally, the length of the measuring section ranges from 100 mm to 200 mm.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the friction force measuring method for the coiling side guide plate, under the condition of no steel belt, the opening degree of a servo valve at the transmission side is gradually increased, the driving force of a side guide plate driving oil cylinder is increased until the side guide plate moves and keeps moving at a constant speed, and at the moment, the resultant force applied to the side guide plate is zero; that is, the friction force and the cylinder driving force are equal in value, so that the friction force of the side guide plate is indirectly obtained by acquiring the pressure of the rodless cavity of the hydraulic cylinder. Based on the basic physics principle, the friction force measurement is convenient and efficient; meanwhile, the dynamic measurement is carried out in the stroke of the side guide plate, the influence of the equipment state in the coiling machine is taken into consideration, the friction value in the actual working environment can be accurately reflected, and the reliability is higher.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (2)
1. A friction force measuring method of a coiling side guide plate is characterized by comprising the following steps:
dividing the stroke range of the side guide plate into a plurality of continuous measuring sections;
respectively executing measurement operation on each measurement section, acquiring the friction force of the side guide plate of the measurement section, and summarizing the measurement data of a plurality of sections to form a friction force curve;
the measuring operation comprises:
under the condition that a coiler has no steel strip, the opening degree of a servo valve at the transmission side is gradually increased until the side guide plate moves, so that the phenomenon that the motion state of the side guide plate is influenced by large acceleration generated by large instantaneous driving force is avoided;
keeping the opening degree of the servo valve at the transmission side unchanged, and driving the side guide plate to move inwards at a constant speed;
acquiring the pressure of a rodless cavity of the side guide plate driving oil cylinder;
the pressure of the rodless cavity of the side guide plate driving oil cylinder is the friction force of the side guide plate.
2. A method of measuring a friction force of a winding-side guide plate according to claim 1, characterized in that: the length range of the measuring section is 100-200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711461056.7A CN108051128B (en) | 2017-12-28 | 2017-12-28 | Method for measuring friction force of coiling side guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711461056.7A CN108051128B (en) | 2017-12-28 | 2017-12-28 | Method for measuring friction force of coiling side guide plate |
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| Publication Number | Publication Date |
|---|---|
| CN108051128A CN108051128A (en) | 2018-05-18 |
| CN108051128B true CN108051128B (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711461056.7A Active CN108051128B (en) | 2017-12-28 | 2017-12-28 | Method for measuring friction force of coiling side guide plate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002138097A (en) * | 2001-08-30 | 2002-05-14 | Api Co Ltd | Novel peptide |
| CN101581944A (en) * | 2008-05-15 | 2009-11-18 | 宝山钢铁股份有限公司 | Control method of alternative pressure of side guides of hot strip mill coiler |
| CN103410809A (en) * | 2013-08-01 | 2013-11-27 | 中冶赛迪工程技术股份有限公司 | System and method for testing hydraulic cylinder Stribeck model friction parameters |
| CN103920750A (en) * | 2014-04-11 | 2014-07-16 | 四川西南不锈钢有限责任公司 | Front-side guide plate system of hot rolling wire reeling machine |
| CN106807761A (en) * | 2015-11-30 | 2017-06-09 | 宝山钢铁股份有限公司 | A kind of new plate rolling side guide control method of hot-strip |
| CN107597880A (en) * | 2017-09-15 | 2018-01-19 | 首钢京唐钢铁联合有限责任公司 | A kind of side guide plate of recoiling machine control method for reducing wearing plate abrasion |
-
2017
- 2017-12-28 CN CN201711461056.7A patent/CN108051128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002138097A (en) * | 2001-08-30 | 2002-05-14 | Api Co Ltd | Novel peptide |
| CN101581944A (en) * | 2008-05-15 | 2009-11-18 | 宝山钢铁股份有限公司 | Control method of alternative pressure of side guides of hot strip mill coiler |
| CN103410809A (en) * | 2013-08-01 | 2013-11-27 | 中冶赛迪工程技术股份有限公司 | System and method for testing hydraulic cylinder Stribeck model friction parameters |
| CN103920750A (en) * | 2014-04-11 | 2014-07-16 | 四川西南不锈钢有限责任公司 | Front-side guide plate system of hot rolling wire reeling machine |
| CN106807761A (en) * | 2015-11-30 | 2017-06-09 | 宝山钢铁股份有限公司 | A kind of new plate rolling side guide control method of hot-strip |
| CN107597880A (en) * | 2017-09-15 | 2018-01-19 | 首钢京唐钢铁联合有限责任公司 | A kind of side guide plate of recoiling machine control method for reducing wearing plate abrasion |
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| CN108051128A (en) | 2018-05-18 |
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