CN107971436B - Feeding control method and system for rolling process of ring rolling mill - Google Patents
Feeding control method and system for rolling process of ring rolling mill Download PDFInfo
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- CN107971436B CN107971436B CN201711278819.4A CN201711278819A CN107971436B CN 107971436 B CN107971436 B CN 107971436B CN 201711278819 A CN201711278819 A CN 201711278819A CN 107971436 B CN107971436 B CN 107971436B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
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Abstract
The invention discloses a feeding control method for a rolling process of a ring rolling mill, which comprises the following steps: measuring the width and the height of the section of the ring blank in real time; and adjusting the axial rolling force according to the real-time section width of the ring blank and the pre-acquired function relationship between the section width and the height of the ring blank so that the height and the section width of the ring blank accord with the function relationship between the section width and the height. The feeding control method for the rolling process of the ring rolling mill can accurately control the feeding amount, avoid the problems of reaction lag and the like caused by observation of an operator, obviously improve the product quality, improve the dimensional stability of the product and ensure that the appearance is more regular. The invention also discloses a feeding control system for the rolling process of the ring rolling mill, and the feeding control system also has the technical effects.
Description
Technical Field
The invention relates to the technical field of rolling, in particular to a feeding control method for a rolling process of a ring rolling mill and a feeding control system for the rolling process of the ring rolling mill.
Background
The ring product is widely applied to a plurality of industrial fields of machinery, automobiles, trains, ships, petrochemical industry, aviation, aerospace, atomic energy, wind power generation and the like. The material of the ring is typically carbon steel, alloy steel, stainless steel, titanium alloy, copper alloy, aluminum alloy, cobalt alloy, nickel based alloy, superalloy, or the like. The ring rolling is mostly adopted for producing various shapes and sizes of ring machines such as various seamless ring forgings of bearing rings, gear rings, flanges, hubs, thin-wall cylindrical parts, wind power flanges, high-neck flanges and the like. When the ring piece is rolled, a ring rolling machine is used for enabling the ring piece to generate continuous local plastic deformation, and further wall thickness reduction, diameter expansion and section profile forming are achieved.
The existing ring rolling mill also has radial and axial feeding speeds during rolling, but the value is given according to experience and is only a preset value, which is unscientific, and the shape of a rolled product is difficult to control without manual adjustment. Thus, during rolling, manual adjustment is required by observation.
However, manual adjustment is performed by observation of the operator, which has severe hysteresis, resulting in unstable and irregular product quality and size. And the lag is easy to cause excessive adjustment amount to the assembly, which can cause damage to products and equipment.
In summary, how to effectively solve the problems that the diameter and the axial feeding speed of the ring rolling mill are difficult to accurately and effectively control and the like is a problem which needs to be solved by those skilled in the art at present.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a feeding control method for a rolling process of a ring rolling mill, which has a structural design that can effectively solve the problem that the radial and axial feeding speeds of the ring rolling mill are difficult to accurately and effectively control, and a second object of the present invention is to provide a feeding control system for a rolling process of a ring rolling mill.
In order to achieve the first object, the invention provides the following technical scheme:
a feeding control method for a rolling process of a ring rolling mill comprises the following steps:
measuring the width and the height of the section of the ring blank in real time;
and adjusting the axial rolling force according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank, which is obtained in advance, so that the height and the section width of the ring blank accord with the linear function relationship between the section width and the height.
Preferably, in the above feeding control method for the rolling process of the ring rolling mill, before measuring the width and the height of the cross section of the ring blank in real time, the method further includes:
rotating the ring blank;
automatically rolling the ring blank in the ring rolling machine, and acquiring and storing the radial parameters and the axial parameters of the ring blank by using the pulse rising edge of the automatic rolling;
and calculating and storing a linear function relation between the section width and the height of the ring blank according to the obtained radial and axial parameters of the ring blank and by combining the corresponding product parameters of the ring blank.
Preferably, the above feeding control method for the rolling process of the ring rolling mill further comprises:
monitoring the outer diameter and the inner diameter of the ring blank in real time;
and if the outer diameter or the inner diameter of the ring blank meets the product requirement, stopping rolling.
Preferably, in the feed control method for the rolling process of the ring rolling mill, the measuring the width and the height of the cross section of the ring blank in real time specifically includes:
and measuring the width and the height of the section of the ring blank in real time through a displacement sensor or laser.
By applying the feeding control method for the rolling process of the ring rolling mill, provided by the invention, the section width and the height of the ring blank are measured in real time, and then the height value corresponding to the section width is obtained according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank obtained in advance, so that the axial rolling force is correspondingly adjusted, and the height and the section width of the ring blank accord with the linear function relationship between the section width and the height. Therefore, the radial and axial deformation are consistent in the required controllable range, and the size of the final product meets the requirement. By the control method, the feeding amount can be accurately controlled, the problems of reaction lag and the like caused by observation of an operator are avoided, the product quality is obviously improved, the size stability of the product is improved, and the appearance is more regular.
In order to achieve the second object, the present invention provides the following technical solutions:
a ring rolling mill rolling process feed control system comprising:
the measuring module is used for measuring the width and the height of the section of the ring blank in real time;
and the control module is used for adjusting the axial rolling force according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank, which is obtained in advance, so that the height and the section width of the ring blank accord with the linear function relationship between the section width and the height.
Preferably, the above rolling process feed control system of a ring rolling mill further comprises:
the parameter acquisition module is used for acquiring and storing the radial parameters and the axial parameters of the ring blank by utilizing the pulse rising edge of automatic rolling after the ring blank rotates and enters the automatic rolling of the ring rolling machine;
and the calculation module is used for calculating and obtaining a linear function relation between the section width and the height of the ring blank according to the obtained radial and axial parameters of the ring blank and by combining the corresponding product parameters of the ring blank, and storing the linear function relation.
Preferably, the above rolling process feed control system of a ring rolling mill further comprises:
the inner and outer diameter monitoring module is used for monitoring the outer diameter and the inner diameter of the ring blank in real time;
and the judging module is used for controlling the ring rolling machine to stop rolling when the outer diameter or the inner diameter of the ring blank meets the product requirement.
By applying the feeding control system for the rolling process of the ring rolling mill, the measuring module is used for measuring the section width and the height of the ring blank in real time, and then the control module is used for obtaining the height value corresponding to the section width according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank obtained in advance, so that the axial rolling force is correspondingly adjusted, and the height and the section width of the ring blank are in accordance with the linear function relationship between the section width and the height. Therefore, the radial and axial deformation are consistent in the required controllable range, and the size of the final product meets the requirement. Through above-mentioned control system, can control the feed amount accurately, avoided the manipulator to observe the reaction lag scheduling problem that produces, show to promote product quality, the dimensional stability of product improves, and the appearance is more regular.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a feeding control method for a rolling process of a ring rolling mill according to an embodiment of the invention;
fig. 2 is a schematic representation of the cross-sectional width of the ring blank as a linear function of the height.
Detailed Description
The embodiment of the invention discloses a feeding control method for a rolling process of a ring rolling mill, which aims to improve the accuracy of radial and axial feeding control of the ring rolling mill.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, fig. 1 is a schematic flow chart illustrating a feeding control method for a rolling process of a ring rolling mill according to an embodiment of the present invention; fig. 2 is a schematic representation of the cross-sectional width of the ring blank as a linear function of the height.
In one embodiment, the invention provides a feeding control method for a rolling process of a ring rolling mill, which comprises the following steps:
s1: measuring the width and the height of the section of the ring blank in real time;
in the rolling process, the cross-sectional width and the height of the ring blank are measured in real time, and a specific measuring device can be selected according to needs and is not particularly limited herein. At any one time, the measuring device sends the measured cross-sectional width and height to the control device, so that the control device can control the cross-sectional width and height accordingly.
S2: and adjusting the axial rolling force according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank acquired in advance so that the height and the section width of the ring blank accord with the linear function relationship between the section width and the height.
For rolling of the ring-shaped blank, according to a linear function relationship between the cross-sectional width and the height of the ring-shaped blank obtained in advance, a theoretical height value corresponding to the real-time cross-sectional width can be obtained through calculation according to the real-time cross-sectional width fed back by the measuring equipment at the moment, so that the real-time height is compared with the theoretical height value to adjust the axial rolling force, the height of the ring-shaped blank tends to the theoretical height value, namely the height and the cross-sectional width of the ring-shaped blank accord with the linear function relationship between the cross-sectional width and the height, and a target ring-shaped product is finally obtained. Specifically, the axial rolling force may be adjusted first, and when the adjustment of the axial rolling force does not meet the control requirement, the radial rolling force may be adjusted, so that the height and the cross-sectional width of the ring blank finally conform to the linear function relationship between the cross-sectional width and the height.
By applying the feeding control method for the rolling process of the ring rolling mill, provided by the invention, the section width and the height of the ring blank are measured in real time, and then the height value corresponding to the section width is obtained according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank obtained in advance, so that the axial rolling force is correspondingly adjusted, and the height and the section width of the ring blank accord with the linear function relationship between the section width and the height. Therefore, the radial and axial deformation are consistent in the required controllable range, and the size of the final product meets the requirement. By the control method, the feeding amount can be accurately controlled, the problems of reaction lag and the like caused by observation of an operator are avoided, the product quality is obviously improved, the size stability of the product is improved, and the appearance is more regular.
Further, before the real-time measurement of the cross-sectional width and the height of the ring blank, the method further includes:
rotating the ring blank;
automatically rolling the ring blank in a ring rolling machine, and acquiring and storing radial parameters and axial parameters of the ring blank by using the pulse rising edge of the automatic rolling;
and calculating and storing a linear function relation between the section width and the height of the ring blank according to the obtained radial and axial parameters of the ring blank and by combining the corresponding product parameters of the ring blank. Namely, through the steps, the ring rolling mill automatically presets a process control curve during rolling. The ring blank is rotated, specifically, the ring blank can be rotated in a manual rolling mode, then the ring blank is automatically rolled, and the axial parameter X1 and the radial parameter Y1 of the ring blank are obtained and stored by using the pulse rising edge of the automatic rolling, for example, the axial parameter X1 and the radial parameter Y1 are counted into a memory. And according to the obtained pair of parameters, calculating and storing a linear function relation between the section width and the height of the ring blank by combining target product parameters corresponding to the ring blank, namely the radial parameter Y2 and the axial parameter X2 of the finished product.
That is, as shown in fig. 2, a set of radial parameters and axial parameters of the ring blank are combined with a corresponding set of radial parameters and axial parameters of the finished product, so as to obtain a variation relationship of the height of the ring blank along with the width of the cross section, that is, a function Y ═ Kx + Z, where Y is a height value and X is a cross-sectional width value, and a slope K and an intercept Z can be calculated through two sets of parameters, so that a linear function relationship is determined. According to the linear function relation, in the rolling process, the function is used for calculating the Y value (height) in real time by taking the X axis (width) as a reference, the Y value is compared with the actually measured height value, and the axial rolling force is adjusted according to the comparison result, so that the ring is rolled according to a given curve in the rolling process. And taking the size of the ring blank once for each rolling. Different K and Z values were obtained for different ring blanks.
In the above embodiments, the method further includes:
monitoring the outer diameter and the inner diameter of the ring blank in real time;
and if the outer diameter or the inner diameter of the ring blank meets the product requirement, stopping rolling.
Namely, in the rolling process, the outer diameter and the inner diameter of the ring blank are monitored in real time, and when the outer diameter or the inner diameter of the ring blank meets the product requirements, the rolling is stopped regardless of whether the height and the thickness meet the requirements or not. Thereby further ensuring the processing precision.
Further, in step S1, the measuring the width and the height of the cross section of the ring blank in real time specifically includes:
and measuring the width and the height of the section of the ring blank in real time through a displacement sensor or laser. I.e. by moving the sensor or the laser.
The invention also discloses a feeding control system for the rolling process of the ring rolling mill, which comprises the following steps:
the measuring module is used for measuring the width and the height of the section of the ring blank in real time;
and the control module is used for adjusting the axial rolling force according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank, which is obtained in advance, so that the height and the section width of the ring blank accord with the linear function relationship between the section width and the height.
By applying the feeding control system for the rolling process of the ring rolling mill, the measuring module is used for measuring the section width and the height of the ring blank in real time, and then the control module is used for obtaining the height value corresponding to the section width according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank obtained in advance, so that the axial rolling force is correspondingly adjusted, and the height and the section width of the ring blank are in accordance with the linear function relationship between the section width and the height. Therefore, the radial and axial deformation are consistent in the required controllable range, and the size of the final product meets the requirement. Through above-mentioned control system, can control the feed amount accurately, avoided the manipulator to observe the reaction lag scheduling problem that produces, show to promote product quality, the dimensional stability of product improves, and the appearance is more regular.
Further, still include:
the parameter acquisition module is used for acquiring and storing the radial parameters and the axial parameters of the ring blank by utilizing the pulse rising edge of automatic rolling after the ring blank rotates and enters the automatic rolling of the ring rolling machine;
and the calculation module is used for calculating and obtaining a linear function relation between the section width and the height of the ring blank according to the obtained radial and axial parameters of the ring blank and by combining the corresponding product parameters of the ring blank, and storing the linear function relation.
In the above embodiments, the method further includes:
the inner and outer diameter monitoring module is used for monitoring the outer diameter and the inner diameter of the ring blank in real time;
and the judging module is used for controlling the ring rolling machine to stop rolling when the outer diameter or the inner diameter of the ring blank meets the product requirement.
For a detailed explanation of the functions of the modules in the feeding control system of the rolling process of the ring rolling mill, reference is made to the related expressions in the feeding control method of the rolling process of the ring rolling mill, and details are not repeated here.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A feeding control method for a rolling process of a ring rolling mill is characterized by comprising the following steps:
measuring the width and the height of the section of the ring blank in real time;
adjusting the axial rolling force according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank acquired in advance so that the height and the section width of the ring blank accord with the linear function relationship between the section width and the height;
before the cross-sectional width and the height of ring blank are measured in real time, still include:
rotating the ring blank;
automatically rolling the ring blank in the ring rolling machine, and acquiring and storing the radial parameters and the axial parameters of the ring blank by using the pulse rising edge of the automatic rolling;
and calculating and storing a linear function relation between the section width and the height of the ring blank according to the obtained radial and axial parameters of the ring blank and by combining the corresponding product parameters of the ring blank.
2. The feed control method for the rolling process of the ring rolling mill according to claim 1, further comprising:
monitoring the outer diameter and the inner diameter of the ring blank in real time;
and if the outer diameter or the inner diameter of the ring blank meets the product requirement, stopping rolling.
3. The feeding control method for the rolling process of the ring rolling mill according to claim 1, wherein the real-time measurement of the width and the height of the cross section of the ring blank specifically comprises:
and measuring the width and the height of the section of the ring blank in real time through a displacement sensor or laser.
4. A rolling process feed control system of a ring rolling mill is characterized by comprising:
the measuring module is used for measuring the width and the height of the section of the ring blank in real time;
the control module is used for adjusting the axial rolling force according to the real-time section width of the ring blank and the linear function relationship between the section width and the height of the ring blank, which is obtained in advance, so that the height and the section width of the ring blank accord with the linear function relationship between the section width and the height; further comprising:
the parameter acquisition module is used for acquiring and storing the radial parameters and the axial parameters of the ring blank by utilizing the pulse rising edge of automatic rolling after the ring blank rotates and enters the automatic rolling of the ring rolling machine;
and the calculation module is used for calculating and obtaining a linear function relation between the section width and the height of the ring blank according to the obtained radial and axial parameters of the ring blank and by combining the corresponding product parameters of the ring blank, and storing the linear function relation.
5. The ring mill rolling process feed control system of claim 4, further comprising:
the inner and outer diameter monitoring module is used for monitoring the outer diameter and the inner diameter of the ring blank in real time;
and the judging module is used for controlling the ring rolling machine to stop rolling when the outer diameter or the inner diameter of the ring blank meets the product requirement.
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| CN201711278819.4A CN107971436B (en) | 2017-12-06 | 2017-12-06 | Feeding control method and system for rolling process of ring rolling mill |
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| CN201711278819.4A CN107971436B (en) | 2017-12-06 | 2017-12-06 | Feeding control method and system for rolling process of ring rolling mill |
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| CN107971436B true CN107971436B (en) | 2020-07-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069487B (en) * | 2019-11-13 | 2020-11-27 | 重庆大学 | Method for judging whether wall thickness difference of large ring blank influences stable rolling of ring piece |
| CN112264562B (en) * | 2020-12-15 | 2021-04-16 | 中国重型机械研究院股份公司 | Real-time diameter detection method and detection system for ring rolling mill in rolling process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2222607A1 (en) * | 1972-05-09 | 1973-11-22 | Rheinstahl Ag | RING ROLLING MILL |
| CN101337256A (en) * | 2007-07-06 | 2009-01-07 | 西安重型机械研究所 | Aluminum alloy ring piece rolling technique and device |
| CN105290282A (en) * | 2015-11-24 | 2016-02-03 | 大冶特殊钢股份有限公司 | Manufacturing method of ultrahigh cylindrical parts |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54155977A (en) * | 1978-05-30 | 1979-12-08 | Sumitomo Metal Ind Ltd | Automatic controlling method for rolling force in ring rolling mill |
| JP3627654B2 (en) * | 2001-01-09 | 2005-03-09 | Ｊｆｅスチール株式会社 | Rolling method and control device for ring-shaped material to be rolled by ring rolling mill |
| DE102014005085A1 (en) * | 2014-04-08 | 2015-10-08 | Sms Meer Gmbh | Multi-roll table-type rolling mill and method of rolling rings in a multi-roll table-type rolling mill |
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2017
- 2017-12-06 CN CN201711278819.4A patent/CN107971436B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2222607A1 (en) * | 1972-05-09 | 1973-11-22 | Rheinstahl Ag | RING ROLLING MILL |
| CN101337256A (en) * | 2007-07-06 | 2009-01-07 | 西安重型机械研究所 | Aluminum alloy ring piece rolling technique and device |
| CN101337256B (en) * | 2007-07-06 | 2010-11-17 | 西安重型机械研究所 | Aluminum alloy ring piece rolling technique and device |
| CN105290282A (en) * | 2015-11-24 | 2016-02-03 | 大冶特殊钢股份有限公司 | Manufacturing method of ultrahigh cylindrical parts |
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