CN107020298B - Log spiral roll shape for belt steel rolling - Google Patents
Log spiral roll shape for belt steel rolling Download PDFInfo
- Publication number
- CN107020298B CN107020298B CN201710474085.0A CN201710474085A CN107020298B CN 107020298 B CN107020298 B CN 107020298B CN 201710474085 A CN201710474085 A CN 201710474085A CN 107020298 B CN107020298 B CN 107020298B
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- Prior art keywords
- log
- log spiral
- rolling
- convexity
- roll shape
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
- B21B2027/022—Rolls having tapered ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/18—Roll crown; roll profile
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention belongs to the Working roll technique fields in the operation of rolling, more particularly, to a kind of log spiral roll shape for belt steel rolling, mainly it is made of two log spirals with certain convexity H, it is characterized in that two log spirals are horizontal tangent and symmetrical in convexity maximum, using working roller both ends as starting point, convexity maximum is terminal.The present invention is since working roller curve uses the log spiral with isogonism characteristic, in plate strip rolling process, can effectively reduce strip width direction " cat ear " defect and extension non-uniform phenomenon, to improve strip quality.
Description
Technical field
The invention belongs to the Working roll technique fields in the operation of rolling, more particularly, to a kind of logarithm for belt steel rolling
Helix roll shape.
Background technology
In recent years, the requirement with people for strip product quality is higher and higher, the optimization of the working roller of rolling
Design is also increasingly subject to the attention of domestic and international scientific research institution and strip manufacturer.Working roller curve directly affects its use
Service life, strip quality and rolling stability, therefore, good working roller curve have weight for the strip for obtaining high quality
Want meaning.
Currently, the working roll in plate strip rolling process mainly has linear type, parabolic type, sinusoidal and multinomial
Shaped form.The roller curve more generally used now is parabola, sine curve and polynomial curve.These three curve roll shapes
Use further improve the strip quality and yield rate of strip product.But still it has some disadvantages, the strip of rolling
There is " cat ear " defect (as shown in Figure 1) and extension non-uniform phenomenon in width direction, and working roller abrasion is uneven, Jin Erying
Ring the service life of the stability and reliability and working roll of the operation of rolling.
Log spiral is that nature especially living nature is very common, because it is with isogonism characteristic, the i.e. corner cut of each point
Always equal, it has been applied to multiple fields, such as：Logarithmic spiral bevel gear and the gear logarithmic spiral line cam is processed,
Patent disclosure (bulletin) number CN1134524；A kind of type contact non-return device of logarithmic spiral profile wedge, patent disclosure (bulletin)
Number CN102730373A；The adjustable material-strewing device of log spiral, patent disclosure (bulletin) number CN102000669A；One kind is based on
The medical magnetic of log spiral impeller and sliding bearing expels heart pump, patent disclosure (bulletin) number CN204419599U.By logarithm
The operation of rolling that helix is applied to strip is the blank of this technical field.
Invention content
The object of the present invention is to provide a kind of log spiral roll shape for belt steel rolling, this roll shape can make working roll
Uniform force and strip extend uniformly in the direction of the width, " cat ear " defect in plate width direction are further decreased, to carry
The service life of stability and reliability and working roll in high plate strip rolling process.
The purpose of the present invention is what is realized by following technical proposals：
The log spiral roll shape for belt steel rolling of the present invention, mainly by two logarithm spiral shells with certain convexity H
Spin line forms, it is characterised in that two log spirals are horizontal tangent and symmetrical in convexity maximum, with working roller two
End is starting point, and convexity maximum is terminal, and the polar equation of log spiral is (as shown in Figure 2)：
ρ=ρ0·ekθ (1)
Its cartesian coordinate form is：
In formula, ρ is polar diameter；ρ0For initial polar diameter；K is involute coefficient；θ is polar angle.
The initial polar diameter ρ of the log spiral0, involute coefficient k and polar angle θ it is true by specific rolling specs
It is fixed.
Advantages of the present invention：
(1) the log spiral roll shape for belt steel rolling of the invention, has since working roller curve uses
The log spiral of isogonism characteristic, in plate strip rolling process, can effectively reduce strip width direction " cat ear " defect and
Extension non-uniform phenomenon, to improve strip quality；
(2) the log spiral roll shape for belt steel rolling of the invention is being ensured well using log spiral roll shape
Under the premise of strip quality, the stress of working roll and wear leveling can be made, it is steady in plate strip rolling process to improve
The service life of qualitative and reliability and working roll.
Description of the drawings
Fig. 1 is " cat ear " defect schematic diagram of width direction in plate strip rolling process.
Fig. 2 is the log spiral schematic diagram under the cartesian coordinate system of the present invention.
Fig. 3 is the working roll log spiral roll shape schematic diagram of the present invention.
Specific implementation mode
The specific implementation mode further illustrated the present invention below in conjunction with the accompanying drawings.
As shown in Figures 2 and 3, the log spiral roll shape for belt steel rolling of the invention is mainly had by two certain
The log spiral of convexity H forms, it is characterised in that and two log spirals are horizontal tangent and symmetrical in convexity maximum, with
Working roller both ends are starting point, and convexity maximum is terminal, and the polar equation of log spiral is (as shown in Figure 2)：
ρ=ρ0·ekθ (1)
Its cartesian coordinate form is：
In formula, ρ is polar diameter；ρ0For initial polar diameter；K is involute coefficient；θ is polar angle.
The initial polar diameter ρ of the log spiral0, involute coefficient k and polar angle θ it is true by specific rolling specs
It is fixed.
Detailed description of embodiments of the present invention below in conjunction with the accompanying drawings.
As shown in Fig. 2, the roll shape is made of the left log spiral 1 and right log spiral 2 of equal length, wherein left right
The convexity of number helix 1 and right log spiral 2 is H, and axial length is L and left log spiral 1 and right logarithmic spiral
Line 2 is horizontal tangent and symmetrical in its junction B, to ensure the rounding off of entire roller curve, passes through convexity H and axial length
L is that can determine the related basic parameter of corresponding log spiral, including initial polar diameter ρ0, involute coefficient k, start polar angle θ1With
Terminate polar angle θ2, which is substituted into the polar equation of log spiral, you can obtain the beginning pole of required log spiral
Diameter ρ1With end polar diameter ρ2；As shown in figure 3, upper and lower two logarithmic spiral curve working rolls 3 and 5 press given volume under pressure to strip 4
It is rolled, due to the isogonism characteristic of log spiral, the material of the width direction of strip during the rolling process can be made to extend more
Add it is uniform make working roll uniform force, " cat ear " defect in plate width direction is further decreased, to improve board rolling
The service life of stability and reliability and working roll in the process.
The present invention can effectively reduce strip in " cat ear " defect of width direction and extend uneven in plate strip rolling process
Even phenomenon under the premise of ensureing good plate band quality, can make stress and the abrasion of working roll to improve strip quality
Homogenization, to improve the service life of stability and reliability and working roll in plate strip rolling process.
Claims (2)
1. a kind of log spiral roll shape for belt steel rolling is made of two log spirals with certain convexity H,
It is characterized in that two log spirals are horizontal tangent and symmetrical in convexity maximum, it is convex using working roller both ends as starting point
Degree maximum is terminal, and the polar equation of log spiral is：
ρ=ρ0·ekθ (1)
Its cartesian coordinate form is：
In formula, ρ is polar diameter；ρ0For initial polar diameter；K is involute coefficient；θ is polar angle.
2. the log spiral roll shape according to claim 1 for belt steel rolling, it is characterised in that the logarithm spiral shell
The initial polar diameter ρ of spin line0, involute coefficient k and polar angle θ determine by specific rolling specs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474085.0A CN107020298B (en) | 2017-06-21 | 2017-06-21 | Log spiral roll shape for belt steel rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474085.0A CN107020298B (en) | 2017-06-21 | 2017-06-21 | Log spiral roll shape for belt steel rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107020298A CN107020298A (en) | 2017-08-08 |
| CN107020298B true CN107020298B (en) | 2018-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710474085.0A Active CN107020298B (en) | 2017-06-21 | 2017-06-21 | Log spiral roll shape for belt steel rolling |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110276127B (en) * | 2019-06-20 | 2023-04-07 | 清华大学深圳研究生院 | Statics control method for spiral pneumatic soft actuator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU259798A1 (en) * | Всесоюзный научно ксследовательский , проектно конструкторский | |||
| CN102009067A (en) * | 2010-10-18 | 2011-04-13 | 北京科技大学 | Configuration method of medium and heavy plate roll system with consideration of both rolling stability and cross-section shape |
| CN104607468A (en) * | 2015-01-15 | 2015-05-13 | 北京科技大学 | Working roll forming technology taking grinding precision and cold-rolled electrical steel edge drop control into consideration |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04266405A (en) * | 1991-02-20 | 1992-09-22 | Kawasaki Steel Corp | Method and device for manufacturing inside grooved seamless steel tube and plug |
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2017
- 2017-06-21 CN CN201710474085.0A patent/CN107020298B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU259798A1 (en) * | Всесоюзный научно ксследовательский , проектно конструкторский | |||
| CN102009067A (en) * | 2010-10-18 | 2011-04-13 | 北京科技大学 | Configuration method of medium and heavy plate roll system with consideration of both rolling stability and cross-section shape |
| CN104607468A (en) * | 2015-01-15 | 2015-05-13 | 北京科技大学 | Working roll forming technology taking grinding precision and cold-rolled electrical steel edge drop control into consideration |
Non-Patent Citations (1)
| Title |
|---|
| EQ153汽车后桥壳钢板碾薄技术;马素琴;《山西机械》;20010930(第3期);第37-39页 * |
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| CN107020298A (en) | 2017-08-08 |
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