CN103111920B - Grinding method of approximate varying contact back-up roll roll-shaped curve by using non numerical control grinding machine - Google Patents
Grinding method of approximate varying contact back-up roll roll-shaped curve by using non numerical control grinding machine Download PDFInfo
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- CN103111920B CN103111920B CN201110362837.7A CN201110362837A CN103111920B CN 103111920 B CN103111920 B CN 103111920B CN 201110362837 A CN201110362837 A CN 201110362837A CN 103111920 B CN103111920 B CN 103111920B
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- 238000000227 grinding Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000007704 transition Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 238000013459 approach Methods 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
本发明涉及一种近似变接触支撑辊辊型曲线的磨削方法，尤其涉及一种利用非数控磨床磨削近似变接触支撑辊辊型曲线的方法。主要解决无数控磨床企业无法在非数控磨床上实现近似变接触支撑辊辊型曲线的磨削问题。本发明的技术方案为在保证非数控磨床凸轮系统精度的情况下，采用多段抛物线逼近高次曲线磨削法，就是将比较复杂的变接触辊型曲线用多条抛物线去逼近（抛物线可根据现场的条件采用二次或者四次的抛物线），从而实现近似变接触支撑辊辊型曲线的磨削，此种磨削工艺比较简单实用，且磨削成的近似变接触辊型曲线也完全能达到生产精度的要求。
The invention relates to a grinding method for approximate variable contact support roll profile curve, in particular to a method for grinding approximate variable contact support roll profile curve by using a non-numerical control grinding machine. It mainly solves the problem that non-NC grinding machine companies cannot achieve approximate variable contact support roll roll profile grinding on non-NC grinding machines. The technical solution of the present invention is to adopt the multi-section parabola approximation high-order curve grinding method under the condition of ensuring the accuracy of the cam system of the non-NC grinding machine, that is, to approximate the more complicated variable contact roll profile curve with multiple parabolas (the parabola can be determined according to the site conditions). The condition adopts quadratic or quartic parabola), so as to realize the grinding of approximate variable contact backup roll profile curve. This grinding process is relatively simple and practical, and the approximate variable contact roll profile curve formed by grinding can also fully achieve production accuracy requirements.
Description
Technical field
The present invention relates to a kind of approximate method for grinding becoming contact backing roll roller curve, particularly relate to one and utilize non-numerically control grinder (manual grinding machine) grinding to be similar to the method becoming and contact backing roll roller curve.
Background technology
Along with the development of hot rolling roller contour, the application becoming contact backing roll roller contour forms trend.For common support roller strap chamfering plain-barreled roll roll shape, the core becoming contact roller contour is the roller curve that grinding is special in support roller, under making roller tie up to the effect of roll-force, the roller Contact length of support roller and working roll can with roll and be with the width of steel to adapt, eliminate or reduce between roller " harmful contact area ", improve the lateral stiffness of carrying roll gap, the carrying roll gap of CVC milling train low cross rigidity can be made to become the roll gap of high transverse stiffness, increase the resistivity of milling train to plate shape disturbing factor (comprising the fluctuation of plate shape and the roll-force fluctuation etc. of supplied materials), suppress the generation of flatness defect, the plate shape of rolling rear band steel is made to keep stable.Meanwhile, due to the minimizing of " harmful contact area ", add regulation and control effect of bending roller force, make milling train to eliminate flatness defect with getting twice the result with half the effort, improve the Strip Shape Control ability of milling train.In addition, because change contact roller contour changes the contact condition between support roller and working roll roller, to improving the axial uneven wear of support roller, there is positive effect.
Due to the employing of change contact roll shape is high order curve, and therefore this type of roll shape can only carry out grinding by advanced numerically control grinder.But because the cost of investment of numerically control grinder is higher, it is 7 times of non-numerically control grinder cost, only have the newly-built hot rolling of minority to produce line at present and possess the condition adopting numerically control grinder grinding backing roll roll shape, and most of old-fashioned hot rolling product line still adopts manual grinding machine (non-numerically control grinder) manual grinding backing roll roll shape, which limits and become contact backing roll roller contour produces line application in this type of hot rolling.If therefore can realize at non-numerically control grinder the grinding becoming contact backing roll roller curve, the application becoming contact roller contour just can be realized on the basis not increasing cost investment.
Patents retrieval situation: through retrieval, the number of applying for a patent is CN90101798.1, and name is called " method for grinding of roll ", is a kind of control method improving roll dressing mode, the method when not needing to force to drive grinding tool, can realize the grinding of roll; The number of applying for a patent is CN200710010563.9, name is called " method for grinding of rolling linear guide ", it is a kind of method for grinding of rolling linear guide, it is inverted by line slideway and is fixed by magnetic force, then by being arranged on the abrasive wheel forming correction on grinding machine diverse location, thus the grinding to rolling linear guide is realized; The number of applying for a patent is CN93104759.5, name is called ": roll pass cylindricalo grinding method and hole type grinder for roller ", it is a kind of processing method of Varied section ring concave roll, it carries out rotary feed campaign by roll simultaneously and is ω reciprocating swing around workbench center as angular speed, make emery wheel complete the straight-line feed of peripheral grinding campaign and different depth, thus process Varied section ring concave roll.Above-mentioned patent does not all relate to the problem that non-numerically control grinder realizes becoming contact backing roll roller curve.
Summary of the invention
The object of this invention is to provide a kind of approximate method for grinding becoming contact backing roll roller curve, mainly solving cannot in the approximate grinding problem becoming contact backing roll roller curve of the upper realization of non-numerically control grinder (manual grinding machine) without numerically control grinder enterprise.
For reaching above object, main thought of the present invention is: when ensureing non-numerically control grinder camming precision, multistage parabola is adopted to approach high order curve filing, exactly the change of more complicated contact roller curve is gone to approach (parabola can adopt secondary or four times parabola according to the condition at scene) with many parabolas, thus realize the approximate grinding becoming contact backing roll roller curve, this kind of fairly simple practicality of grinding process, and approximate change the be ground to contacts the requirement that roller curve also can reach production precision completely.
According to change contact backing roll roller curve feature, and in conjunction with the practical capacity of non-numerically control grinder, concrete technical scheme of the present invention is as follows:
The first step: for change contact roller curve figure feature, curve is divided into respectively 3 regions, straightway, transition segmental arc, bottom arc;
Second step: utilize the change contact roller curve high order curve equation designed to obtain corresponding X and Y value, respectively with the curve (region that Y value slowly changes) of arc bottom parabola 1 approaching simulation, calculate curvilinear equation y=K
1x
2in K
1, and then obtain the discrete point value of parabola 1; Again with parabola 2 approaching simulation transition segmental arc, in kind obtain the curvilinear equation y=K of parabola 2
2x
2– a, in K
2with a value, and then obtain the discrete point value of parabola 2;
3rd step: the whole body of roll of 1 curvilinear equation grinding parabolically;
4th step: utilize parabola 1 equation equal in intersection's Y value with parabola 2 equation, in conjunction with barrel length value, can obtain the abscissa X value of two joints of parabola 1 and parabola 2 by solving equation;
5th step: 2 curvilinear equations parabolically, the body of roll position of grinding from left roller end to left side parabola 1 with the joint of parabola 2, and the body of roll position from right roller end to right side parabola 1 with the joint of parabola 2 respectively;
6th step: respectively process symmetrical chamfering at two roller ends;
7th step: polishing is carried out to whole roll surface by roughness requirements≤1.6 μm.
Capital equipment involved in the present invention is the non-numerically control grinder possessing roll basic roll shape grinding function, utilizes to control cam manually and enter level amount at diverse location, can go out presetting parabolic curve in the grinding of body of roll diverse location.
Beneficial effect of the present invention: approach filing by adopting multistage parabola, the change of more complicated contact roller curve many parabolas are gone to approach, thus realize the approximate grinding becoming contact backing roll roller curve, this kind of fairly simple practicality of grinding process, and approximate change the be ground to contacts the requirement that roller curve also can reach production precision completely.The method can realize the practical application becoming contact roller contour on the basis not increasing cost investment.
Accompanying drawing explanation
Fig. 1 is the present invention's intrinsic change contact roller curve figure.
Fig. 2 is intrinsic change contact roller curve piecewise graph.
Fig. 3 is parabolic curve simulation drawing of the present invention.
Fig. 4 is parabolic curve segmental machining figure of the present invention.
Fig. 5 becomes contact roller curve figure after grinding of the present invention.
Detailed description of the invention
The first step: for change contact roller curve figure feature (shown in Fig. 1), curve is divided into three regions by shown in Fig. 2, region 1 is straightway, directly processes, without the need to simulation; Trizonal concrete defining method is shown in that the 4th step is to the 6th step;
Second step: utilize the high order curve equation designed to obtain corresponding X and Y value, the position of X-axis is at the lowermost end of roll surface concave curve, and initial point is at the position of center line of the body of roll, and body of roll center line is Y-axis.Respectively with the curve (region that Y value slowly changes) of arc bottom parabola 1 approaching simulation, calculate curvilinear equation y=K
1x
2in K
1, thus obtain the discrete point value of parabola 1; Again with parabola 2 approaching simulation transition segmental arc, in kind obtain the curvilinear equation y=K of parabola 2
2x
2– a, in K
2with a value, thus obtain the discrete point value of parabola 2; As shown in Figure 3;
3rd step: the whole body of roll of 1 curvilinear equation grinding (see Fig. 4 processing line one) parabolically;
4th step: utilize parabola 1 equation equal with parabola 2 equation intersection Y value, in conjunction with barrel length value, can obtain the abscissa X value of parabola 1 and two joints of parabola 2 by solving equation;
5th step: 2 curvilinear equations parabolically, two correspondence positions (see Fig. 4 processing line two) of a grinding from two roller ends to parabola 1 with the joint of parabola 2;
6th step: respectively process symmetrical chamfering at two roller ends;
7th step: carry out polishing to whole roll surface, obtains Fig. 5 and becomes contact roller curve.
The present invention adopts non-numerically control grinder, utilizes to control cam manually and enter level amount at diverse location, can go out presetting parabolic curve in the grinding of body of roll diverse location.
Specifically produce line finish rolling F5 rolling mill (body of roll is long for 1450mm) grinding for 1422mm:
The first step: for the change contact roller curve (shown in Fig. 1) designed,
Y=1.5368175741E-15(x+725)
6-6.5560637709E-12(x+725)
5+ 1.1487365578E-08(x+725)
4-1.0575214949E-05(x+725)
3+ 5.4090480822E-03(x+725)
2-1.4674447247(x+725)+318.03519999(equation why add 725 be consider with body of roll center line for Y-axis, and corresponding with data in curve 1,2 and computation sheet)
Curve is divided into respectively 3 regions by shown in Fig. 2;
Second step: from X and the Y value that body of roll central point is corresponding, the curvilinear equation being obtained parabola 1 by approaching simulation is
y=0.0000494539*x 2 ,from apart from roller end 150mm(according to knowhow, edge falls the chamfering of 150mm usually) X and Y value beginning corresponding to position, by the curvilinear equation of approaching simulation parabola 2 be
y=0.00038*x 2 -56.9605,as shown in Figure 3;
(note: K
1method for solving be: get X1, Y1, X2, Y2 to Xi, Yi value that arc bottom design curve (region that Y value slowly changes) is corresponding, bring Y=K into
1x
2equation, obtain corresponding K respectively
11, K
12to K
1i, then ask K
11to K
1imean value be required COEFFICIENT K
1=
0.0000494539.
K
2, A2 method for solving be: with K
1method for solving is similar, gets X1, Y1, X2, Y2 to Xi, Yi value of both sides arc (Y value the changes region faster) correspondence that design curve starts from edge 150mm place, brings Y=K into respectively with two groups of data
2x
2the equation of-A forms equation group, obtains corresponding K
21, K
22to K
2iand A1, A2 to Ai, then ask K respectively
21to K
2iand the mean value of A1 to Ai, be required COEFFICIENT K
2=
0.00038, A=
56.9605)
3rd step: be with curvilinear equation:
y=0.0000494539*x 2 parabola, the whole body of roll of grinding (see Fig. 4 processing line one);
4th step: utilize parabola 1 equation equal in intersection's Y value with parabola 2 equation, i.e. 0.0000494539*x2=0.00038*x2-56.9605, in conjunction with barrel length 1450mm, parabola 1 can be obtained by solving equation and be respectively apart from roller end 299.38mm place with two joints of parabola 2;
5th step: be with curvilinear equation:
y=0.00038*x 2 -56.9605parabola, grinding is from two roller ends to two body of roll positions (see Fig. 4 processing line two) apart from roller end 299.38mm respectively, the centrifugal pump of each processing line in table 1, from the Data Comparison of table 1, the actual value of parabola 1, parabola 2 and the degree of fitting of design curve value better.(parabola 1 coefficient 0.0000494539 and parabola 2 coefficient 0.00038 and intercept 56.9605 are all by utilizing mathematical method to simulate (K1's) according to table 1, then just obtain the 3rd row and the 4th arrange discrete point value, the 5th row are worth by the 3rd row and the 4th and merge and obtain);
6th step: in the chamfering of the position 1.5mm apart from two each 150mm of roller end, forms processing line three;
7th step: carry out polishing to whole roll surface by roughness requirements≤1.6 μm, obtains approximate change of Fig. 5 and contacts roller curve.
Adopt the approximate change contact roll shape backing roll of the method grinding after F5 frame uses, reach the effect improving rack outlet middle wave well, the band steel larger for the original middle wave such as the diamond plate of rolling Thin Specs and the tinning substrate of thin narrow specification serves obvious improvement result; Simultaneously by the abrasion condition of working roll, after employing this support roller, the state of wear of working roll is ideal, curve relative smooth, relative to the situation of Yuanping City's roll shape support roller, has had very large improvement.Illustrate that the approximate change contact backing roll roller curve of employing the method grinding meets the requirement for actual industrial production.
Table 1: the centrifugal pump (radius value) of each processing line
| -361 | 5 | 6 | 6 | |
| -351 | 5 | 6 | 6 | |
| -341 | 4 | 6 | 6 | |
| -331 | 4 | 5 | 5 | |
| -321 | 3 | 5 | 5 | |
| -311 | 3 | 5 | 5 | |
| -301 | 3 | 4 | 4 | |
| -291 | 2 | 4 | 4 | |
| -281 | 2 | 4 | 4 | |
| -271 | 2 | 4 | 4 | |
| -261 | 2 | 3 | 3 | |
| -251 | 2 | 3 | 3 | |
| -241 | 2 | 3 | 3 | |
| -231 | 1 | 3 | 3 | |
| -221 | 1 | 2 | 2 | |
| -211 | 1 | 2 | 2 | |
| -201 | 1 | 2 | 2 | |
| -191 | 1 | 2 | 2 | |
| -181 | 1 | 2 | 2 | |
| -171 | 1 | 1 | 1 | |
| -161 | 1 | 1 | 1 | |
| -151 | 1 | 1 | 1 | |
| -141 | 1 | 1 | 1 | |
| -131 | 0 | 1 | 1 | |
| -121 | 0 | 1 | 1 | |
| -111 | 0 | 1 | 1 | |
| -101 | 0 | 1 | 1 | |
| -91 | 0 | 0 | 0 | |
| -81 | 0 | 0 | 0 | |
| -71 | 0 | 0 | 0 | |
| -61 | 0 | 0 | 0 | |
| -51 | 0 | 0 | 0 | |
| -41 | 0 | 0 | 0 | |
| -31 | 0 | 0 | 0 | |
| -21 | 0 | 0 | 0 | |
| -11 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 11 | 0 | 0 | 0 | |
| 21 | 0 | 0 | 0 | |
| 31 | 0 | 0 | 0 | |
| 41 | 0 | 0 | 0 |
| 51 | 0 | 0 | 0 | |
| 61 | 0 | 0 | 0 | |
| 71 | 0 | 0 | 0 | |
| 81 | 0 | 0 | 0 | |
| 91 | 0 | 0 | 0 | |
| 101 | 0 | 1 | 1 | |
| 111 | 0 | 1 | 1 | |
| 121 | 0 | 1 | 1 | |
| 131 | 0 | 1 | 1 | |
| 141 | 1 | 1 | 1 | |
| 151 | 1 | 1 | 1 | |
| 161 | 1 | 1 | 1 | |
| 171 | 1 | 1 | 1 | |
| 181 | 1 | 2 | 2 | |
| 191 | 1 | 2 | 2 | |
| 201 | 1 | 2 | 2 | |
| 211 | 1 | 2 | 2 | |
| 221 | 1 | 2 | 2 | |
| 231 | 1 | 3 | 3 | |
| 241 | 2 | 3 | 3 | |
| 251 | 2 | 3 | 3 | |
| 261 | 2 | 3 | 3 | |
| 271 | 2 | 4 | 4 | |
| 281 | 2 | 4 | 4 | |
| 291 | 2 | 4 | 4 | |
| 301 | 3 | 4 | 4 | |
| 311 | 3 | 5 | 5 | |
| 321 | 3 | 5 | 5 | |
| 331 | 4 | 5 | 5 | |
| 341 | 4 | 6 | 6 | |
| 351 | 5 | 6 | 6 | |
| 361 | 5 | 6 | 6 | |
| 371 | 6 | 7 | 7 | |
| 381 | 7 | 7 | 7 | |
| 391 | 8 | 8 | 8 | |
| 401 | 9 | 8 | 8 | |
| 411 | 10 | 8 | 8 | |
| 421 | 12 | 10 | 10 | |
| 431 | 13 | 14 | 14 | |
| 441 | 15 | 17 | 17 | |
| 451 | 17 | 20 | 20 | |
| 461 | 19 | 24 | 24 |
| 471 | 22 | 27 | 27 | |
| 481 | 24 | 31 | 31 | |
| 491 | 27 | 35 | 35 | |
| 501 | 31 | 38 | 38 | |
| 511 | 35 | 42 | 42 | |
| 521 | 39 | 46 | 46 | |
| 531 | 44 | 50 | 50 | |
| 541 | 49 | 54 | 54 | |
| 551 | 55 | 58 | 58 | |
| 561 | 61 | 63 | 63 | |
| 571 | 68 | 67 | 67 | |
| 581 | 76 | 76 | ||
| 591 | 84 | 160 | ||
| 601 | 94 | 260 | ||
| 611 | 104 | 360 | ||
| 621 | 115 | 460 | ||
| 631 | 127 | 560 | ||
| 641 | 140 | 660 | ||
| 651 | 154 | 760 | ||
| 661 | 169 | 860 | ||
| 671 | 185 | 960 | ||
| 681 | 203 | 1060 | ||
| 691 | 222 | 1160 | ||
| 701 | 243 | 1260 | ||
| 711 | 266 | 1360 | ||
| 721 | 291 | 1460 | ||
| 725 | 318 | 1500 |
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362837.7A CN103111920B (en) | 2011-11-16 | 2011-11-16 | Grinding method of approximate varying contact back-up roll roll-shaped curve by using non numerical control grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362837.7A CN103111920B (en) | 2011-11-16 | 2011-11-16 | Grinding method of approximate varying contact back-up roll roll-shaped curve by using non numerical control grinding machine |
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| Publication Number | Publication Date |
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| CN103111920A CN103111920A (en) | 2013-05-22 |
| CN103111920B true CN103111920B (en) | 2015-03-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511807A (en) * | 2013-09-30 | 2015-04-15 | 宝山钢铁股份有限公司 | Optimized finish rolling supporting roll grinding method |
| CN111881528B (en) * | 2020-07-23 | 2023-10-17 | 东北大学 | Method for determining roll shape curve of CVC rolling mill backup roll with parabolic chamfer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59224246A (en) * | 1983-05-30 | 1984-12-17 | Toshiba Mach Co Ltd | Method of creating cambering curve in roll grinder |
| JPH0675730B2 (en) * | 1989-05-19 | 1994-09-28 | 三菱重工業株式会社 | Roll grinding method |
| JPH0691498A (en) * | 1992-09-16 | 1994-04-05 | Kobe Steel Ltd | Grinding method of rolling machine |
| CN101244526B (en) * | 2007-02-15 | 2010-08-11 | 宝山钢铁股份有限公司 | Flattener support roll outside lane grinding method |
| CN100593442C (en) * | 2007-07-19 | 2010-03-10 | 宝山钢铁股份有限公司 | Vertical Roller of Vertical Roller Edger and Its Design Method |
| CN101758080B (en) * | 2010-01-12 | 2011-11-30 | 北京科技大学 | Strip-rolling variable contact support roller and processing method thereof |
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2011
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