CN103111920A - 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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- CN103111920A CN103111920A CN2011103628377A CN201110362837A CN103111920A CN 103111920 A CN103111920 A CN 103111920A CN 2011103628377 A CN2011103628377 A CN 2011103628377A CN 201110362837 A CN201110362837 A CN 201110362837A CN 103111920 A CN103111920 A CN 103111920A
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Abstract
The invention relates to a grinding method of approximate varying contact back-up roll roll-shaped curve, in particular to a grinding method of an approximate varying contact back-up roll roll-shaped curve by using a non numerical control grinding machine. The method mainly solves the problem that the approximate varying contact back-up roll roll-shaped curve can not be realized on the non numerical control grinding machine for companies without the computer numerical control grinding machine. The technical scheme includes that the method comprises that a multi-step parabola approaching higher order camber grinding method is adopted, or the complicated varying contact roll-shaped curve is approached by a plurality of the parabolas (the parabolas can be adopted as a cubic or quartic parabolas according to spot condition) under the condition that camming system accuracy of the non numerical control grinding machine is guaranteed. The grinding of the approximate varying contact back-up roll roll-shaped curve can be realized. The grinding method has the advantages of being simple, practical and meeting the demand of production precision by grinding into the approximate varying contact roll-shaped curve.
Description
Technical field
The present invention relates to a kind of method for grinding of approximate change contact backing roll roller curve, relate in particular to a kind of approximate method that becomes contact backing roll roller curve of non-numerically control grinder (manual grinding machine) grinding of utilizing.
Background technology
Along with the development of hot rolling roller contour, the application that becomes contact backing roll roller contour has formed trend.For common support roller strap chamfering plain-barreled roll roll shape, the core that becomes the contact roller contour is the special roller curve of grinding on support roller, so that roller ties up under the effect of roll-force, the roller Contact length of support roller and working roll can adapt with the width of roll with steel, between elimination or minimizing roller " harmful contact area ", improve the lateral stiffness of carrying roll gap, can make the carrying roll gap of CVC milling train low cross rigidity become the roll gap of high transverse stiffness, increase milling train to the plate shape disturbing factor resistivity of (comprising the plate shape fluctuation of supplied materials and roll-force fluctuation etc.), suppress the generation of flatness defect, make and roll rear plate shape with steel and keep stable.Simultaneously, owing to the minimizing of " harmful contact area ", increase the regulation and control effect of bending roller force, so that milling train can be eliminated flatness defect, improved the plate shape control ability of milling train with getting twice the result with half the effort.In addition, because change contact roller contour has changed the contact condition between support roller and working roll roller, has positive effect to improving the axial uneven wear of support roller.
Because what become the employing of contact roll shape is high order curve, so this type of roll shape can only be carried out grinding by advanced person's numerically control grinder.But because the cost of investment of numerically control grinder is higher, 7 times of non-numerically control grinder cost, only have at present the newly-built hot rolling of minority to produce line and possess the condition that adopts 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, and this has just limited and has become contact backing roll roller contour produces line in this type of hot rolling application.If therefore can realize becoming at non-numerically control grinder the grinding of contact backing roll roller curve, just can realize becoming on the basis that does not increase cost investment the application of contact roller contour.
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 of improving the roll dressing mode, the method can not need to force to drive in the situation of grinding tool the grinding of realization 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 to fix with the line slideway inversion and by magnetic force, then by being installed in the abrasive wheel forming correction on the grinding machine diverse location, thereby realize grinding to rolling linear guide; 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 that becomes the section ring concave roll, it carries out simultaneously the rotary feed campaign by roll and is the ω reciprocating swing around the workbench center as angular speed, make emery wheel finish the straight-line feed of peripheral grinding campaign and different depth, become the section ring concave roll thereby process.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 method for grinding that the purpose of this invention is to provide a kind of approximate change contact backing roll roller curve mainly solves without numerically control grinder enterprise and can't realize the approximate grinding problem that becomes contact backing roll roller curve at non-numerically control grinder (manual grinding machine).
For reaching above purpose, main thought of the present invention is: in the situation that guarantees non-numerically control grinder camming precision, adopt multistage parabola to approach the high order curve filing, exactly the change of more complicated contact roller curve is removed to approach (parabola can according to the condition employing secondary at scene or four times parabola) with many parabolas, thereby realize the approximate grinding that becomes contact backing roll roller curve, the fairly simple practicality of this kind grinding process, and the approximate change contact roller curve that is ground to also can reach the requirement of production precision fully.
According to becoming contact backing roll roller curve characteristics, 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 becoming contact roll shape curve map feature, curve is divided into respectively 3 zones, straightway, transition segmental arc, bottom arc;
Second step: utilize the change contact roller curve high order curve equation of having designed to obtain corresponding X and Y value, with the curve (zone that Y value slowly changes) of parabola 1 approaching simulation bottom arc, calculate curvilinear equation y=K respectively
1x
2In K
1, and then the discrete point value of acquisition parabola 1; With parabola 2 approaching simulation transition segmental arcs, in kind obtain the curvilinear equation y=K of parabola 2 again
2x
2– a, in K
2With a value, and then obtain the discrete point value of parabola 2;
The 3rd step: the whole body of roll of 1 curvilinear equation grinding parabolically;
The 4th step: utilize parabola 1 equation to equate in intersection's Y value with parabola 2 equations, in conjunction with the barrel length value, can obtain the abscissa X value of two joints of parabola 1 and parabola 2 by solving equation;
The 5th step: 2 curvilinear equations parabolically, a grinding from two roller ends to parabola 1 with two correspondence positions of the joint of parabola 2;
The 6th step: respectively process symmetrical chamfering at two roller ends;
The 7th step: whole roll surface is carried out polishing by roughness requirement≤1.6 μ m.
Capital equipment involved in the present invention is the non-numerically control grinder that possesses the basic roll shape grinding function of roll, utilizes to control manually cam and advance the level amount, the parabolic curve that can go out to preset in the grinding of body of roll diverse location at diverse location.
Beneficial effect of the present invention: approach filing by adopting multistage parabola, the change contact roller curve of more complicated is gone to approach with many parabolas, thereby realize the approximate grinding that becomes contact backing roll roller curve, the fairly simple practicality of this kind grinding process, and the approximate change contact roller curve that is ground to also can reach the requirement of production precision fully.The method can realize becoming on the basis that does not increase cost investment the practical application of contact roller contour.
Description of drawings
Fig. 1 is the intrinsic change contact of the present invention roll shape curve map.
Fig. 2 is intrinsic change contact roll shape curve segmentation figure.
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 roll shape curve map after the grinding of the present invention.
The specific embodiment
The first step: for becoming contact roll shape curve map feature (shown in Figure 1), by shown in Figure 2 curve is divided into Three regions, zone 1 is straightway, and directly processing gets final product, and need not simulation; Trizonal concrete definite method sees that the 4th step is to the 6th step;
Second step: utilize the high order curve equation of having 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.With the curve (zone that Y value slowly changes) of parabola 1 approaching simulation bottom arc, calculate curvilinear equation y=K respectively
1x
2In K
1Thereby, the discrete point value of acquisition parabola 1; With parabola 2 approaching simulation transition segmental arcs, in kind obtain the curvilinear equation y=K of parabola 2 again
2x
2– a, in K
2With a value, thereby obtain the discrete point value of parabola 2; As shown in Figure 3;
The 3rd step: the whole body of roll of 1 curvilinear equation grinding (seeing Fig. 4 processing line one) parabolically;
The 4th step: utilize parabola 1 equation to equate with parabola 2 equation intersection Y values, in conjunction with the barrel length value, can obtain the abscissa X value of two joints of parabola 1 and parabola 2 by solving equation;
The 5th step: 2 curvilinear equations parabolically, a grinding from two roller ends to parabola 1 with two correspondence positions (seeing Fig. 4 processing line two) of the joint of parabola 2;
The 6th step: respectively process symmetrical chamfering at two roller ends;
The 7th step: whole roll surface is carried out polishing, obtain Fig. 5 and become the contact roller curve.
The present invention adopts non-numerically control grinder, utilizes to control manually cam and advance the level amount, the parabolic curve that can go out to preset in the grinding of body of roll diverse location at diverse location.
Specifically produce line finish rolling F5 rolling mill (body of roll is long as 1450mm) grinding as example take 1422mm:
The first step: for the change contact roller curve (shown in Figure 1) that designs,
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)+why the 318.03519999(equation adds 725 is to consider take body of roll center line as Y-axis, and with curve 1,2 and computation sheet in data corresponding)
By shown in Figure 2 curve is divided into respectively 3 zones;
Second step: from the corresponding X and Y value of body of roll central point, the curvilinear equation of obtaining parabola 1 by approaching simulation is
Y=0.0000494539*x 2 ,According to knowhow, limit section falls the chamfering of 150mm usually from distance roller end 150mm() X corresponding to position begin with the Y value, the curvilinear equation by approaching simulation parabola 2 is
Y=0.00038*x 2 -56.9605,As shown in Figure 3;
(annotate: K
1Method for solving be: get design curve bottom arc (zone that Y value slowly changes) corresponding X1, Y1, X2, Y2 to Xi, Yi value, bring Y=K into
1X
2Equation, obtain respectively corresponding K
11, K
12To K
1i, ask again 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, get design curve from the both sides arc (Y value changes faster zone) of limit section 150mm place beginning corresponding X1, Y1, X2, Y2 to Xi, Yi value, bring Y=K into two groups of data respectively
2X
2The equation of-A forms equation group, obtains corresponding K
21, K
22To K
2iAnd A1, A2 ask respectively K again to Ai
21To K
2iAnd A1 is required COEFFICIENT K to the mean value of Ai
2=
0.00038, A=
56.9605)
The 3rd the step: take curvilinear equation as:
Y=0.0000494539*x 2 Parabola, the whole body of roll of grinding (seeing Fig. 4 processing line one);
The 4th step: utilize parabola 1 equation to equate in intersection's Y value with parabola 2 equations, be 0.0000494539*x2=0.00038*x2-56.9605, in conjunction with barrel length 1450mm, two joints can obtaining parabola 1 and parabola 2 by solving equation are respectively apart from roller end 299.38mm place;
The 5th the step: take curvilinear equation as:
Y=0.00038*x 2 -56.9605Parabola, two body of roll positions (see Fig. 4 processing line two) of difference grinding from two roller ends to distance roller end 299.38mm, the centrifugal pump of each processing line sees Table 1, and from the Data Comparison of table 1, the actual value of parabola 1, parabola 2 and the degree of fitting of design curve value are better.(parabola 1 coefficient 0.0000494539 and parabola 2 coefficients 0.00038 and intercept 56.9605 are all by utilize mathematical method to simulate (K1's) according to table 1, then just obtain the 3rd row and the discrete point value of the 4th row, the 5th row are merged by the 3rd row and the 4th value and get);
The 6th step: in the chamfering apart from the position 1.5mm of two each 150mm of roller end, form processing line three;
The 7th step: by roughness requirement≤1.6 μ m whole roll surface is carried out polishing, obtain the approximate contact roller curve that becomes of Fig. 5.
Adopt the approximate change contact roll shape backing roll of the method grinding after the F5 frame is used, reach well the effect of improving frame outlet middle wave, played obvious improvement effect for the original larger band steel of middle wave such as the diamond plate of rolling thin specification and the tinning substrate of thin narrow specification; Simultaneously by the abrasion condition of working roll, used this support roller after, the state of wear of working roll is comparatively desirable, curve is relatively smooth, with respect to the situation of former parallel roll profile support roller, very large improvement has been arranged.Illustrate and adopt the approximate change contact backing roll roller curve of the method grinding to satisfy the requirement that is used for actual industrial production.
Table 1: the centrifugal pump of each processing line (radius value)
| -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 (4)
1. one kind is utilized the approximate method that becomes contact backing roll roller curve of non-numerically control grinder grinding, it is characterized in that may further comprise the steps:
The first step: the change contact roller curve for having designed is divided into 3 zones with curve, straightway, transition segmental arc, bottom arc;
Second step: with the curve of parabola 1 approaching simulation bottom arc, parabola 2 approaching simulations go out the curve of transition segmental arc respectively;
The 3rd step: the whole body of roll of 1 curvilinear equation grinding parabolically;
The 4th step: utilize parabola 1 equation to equate in intersection's Y value with parabola 2 equations, in conjunction with the barrel length value, can obtain the abscissa X value of two joints of parabola 1 and parabola 2 by solving equation;
The 5th step: 2 curvilinear equations parabolically, a grinding from two roller ends to parabola 1 with two correspondence positions of the joint of parabola 2;
The 6th step: respectively process symmetrical chamfering at two roller ends;
The 7th step: whole roll surface is carried out polishing.
2. the approximate method that becomes contact backing roll roller curve of non-numerically control grinder grinding of utilizing according to claim 1 is characterized in that the curvilinear equation y=K of parabola 1
1x
2, the curvilinear equation y=K of parabola 2
2x
2– a, 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 Y-axis is body of roll center line.
3. the approximate method that becomes contact backing roll roller curve of non-numerically control grinder grinding of utilizing according to claim 1 is characterized in that described chamfering of the 6th step is the chamfering of 150mm * 1.5mm.
4. the approximate method that becomes contact backing roll roller curve of non-numerically control grinder grinding of utilizing according to claim 1 is characterized in that the polishing requirement of the 7th step is that roughness requires≤1.6 μ m.
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| 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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|---|---|---|---|
| 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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Cited By (3)
| 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 |
| CN106553089A (en) * | 2016-11-24 | 2017-04-05 | 南京钢铁股份有限公司 | A kind of processing method of the use plain external grinding machine processing with arc concavity roll |
| CN111881528A (en) * | 2020-07-23 | 2020-11-03 | 东北大学 | Method for determining roll shape curve of back-up roll of CVC rolling mill with parabolic chamfer |
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| CN1047241A (en) * | 1989-05-19 | 1990-11-28 | 三菱重工业株式会社 | The method for grinding of roll |
| JPH0691498A (en) * | 1992-09-16 | 1994-04-05 | Kobe Steel Ltd | Grinding method of rolling machine |
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| CN101758080A (en) * | 2010-01-12 | 2010-06-30 | 北京科技大学 | Strip-rolling variable contact support roller and processing method thereof |
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| JPS59224246A (en) * | 1983-05-30 | 1984-12-17 | Toshiba Mach Co Ltd | Method of creating cambering curve in roll grinder |
| CN1047241A (en) * | 1989-05-19 | 1990-11-28 | 三菱重工业株式会社 | The method for grinding of roll |
| JPH0691498A (en) * | 1992-09-16 | 1994-04-05 | Kobe Steel Ltd | Grinding method of rolling machine |
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Cited By (4)
| 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 |
| CN106553089A (en) * | 2016-11-24 | 2017-04-05 | 南京钢铁股份有限公司 | A kind of processing method of the use plain external grinding machine processing with arc concavity roll |
| CN111881528A (en) * | 2020-07-23 | 2020-11-03 | 东北大学 | Method for determining roll shape curve of back-up roll of CVC rolling mill with parabolic chamfer |
| 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 |
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|---|---|
| CN103111920B (en) | 2015-03-18 |
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