CN101244526B - Flattener support roll outside lane grinding method - Google Patents
Flattener support roll outside lane grinding method Download PDFInfo
- Publication number
- CN101244526B CN101244526B CN2007100375977A CN200710037597A CN101244526B CN 101244526 B CN101244526 B CN 101244526B CN 2007100375977 A CN2007100375977 A CN 2007100375977A CN 200710037597 A CN200710037597 A CN 200710037597A CN 101244526 B CN101244526 B CN 101244526B
- Authority
- CN
- China
- Prior art keywords
- backing roll
- outer ring
- overcoat
- grinding
- grinding method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a grinding and forming method of a supporting roller outer ring for repairing the supporting roller of a straightener, which comprises the follow steps: with the central axis of the inner race of a supporting roller jacket as the processing central axis, adopting a grinding wheel with a concave hyperbola generatrix to process the outer ring generatrix of the supporting roller, and meeting the requirement that: the outer ring generatrix of the repaired supporting roller jacket is basically fitting with a log curve at the effective line segment. The grinding and forming method in the invention has an advantage that the outer ring generatrix of the repaired supporting roller jacket is practically fitting with the log curve at the effective line segment, thus enabling the repaired straightener to achieve the almost optimal bearing effects.
Description
Technical field
The present invention relates to a kind of restorative procedure of straightener backing roll, relate in particular to the method for grinding of backing roll outer ring when repairing the straightener backing roll.
Background technology
The defective that steel plate produces in rolling, heat treatment, cooling and transportation, finishing straightener commonly used is corrected.The finishing aligning has become requisite technology together in the operations of rolling such as cold rolling, hot rolling, Wide and Thick Slab.The decapacitation of finishing straightener is corrected beyond the morpheme defective of rolled piece, also has scale breading, crease-resistant and improve the effect of rolled piece product mechanical performance.Along with the user to rolled piece, particularly the quality requirements to cold-reduced sheet, hot rolled plate is more and more higher, how to improve mechanical performance, the machining accuracy of straightener itself and how to prolong its maintenance cycle, in batches repairs, reduces production costs and also become the content of metallurgical machinery research.
The general back of using once of straightener backing roll when for example backing roll relative dimensions tolerance surpasses 5 μ, will begin to have influence on the strip shape quality of steel plate because of its special manufacturing technique requirent, just must scrap when the backing roll global tolerance surpasses 15 μ.Generally small size bearing is all taked the scheme of life cycle with regard to directly scrapping both at home and abroad at present, large size bearings such as filmatic bearing are attempted repairing, its enforcement only is monogynous reparation targetedly, can't have certain experience to draw on when batch is repaired in that the straightener backing roll is carried out; Simultaneously, owing to of the specific (special) requirements of different production technologies, thereby can't indiscriminately imitate the reparation that the existing bearing repairing standard is realized the straightener backing roll to bearing.
How to realize the recoverability of backing roll, make the straightener backing roll of in the past scrapping through satisfying the technological requirement of straightener after repairing and even repeatedly repairing, that realizes the straightener backing roll reuses, reduces the spare part cost, becomes problem demanding prompt solution.
Studies have shown that will reach the best supporting effect of straightener backing roll, the flattener support roll outside lane bus must present logarithmic curve, and add man-hour that will realize that the backing roll outer ring of logarithmic curve is shaped, difficulty is big and cost is higher actual.
Summary of the invention
The purpose of this invention is to provide a kind of simple and practical backing roll outer ring grinding forming method that is suitable for batch jobs that is used to repair the straightener backing roll, match with hyperbola and logarithmic curve, make straightener backing roll after the reparation near best supporting effect, reduce rehabilitation cost simultaneously.
Flattener support roll outside lane grinding method provided by the invention may further comprise the steps:
Interior raceway central axis with the backing roll overcoat is the machining center axis, adopt the outer ring bus of the emery wheel processing backing roll overcoat of band indent hyperbola bus, and the satisfied outer ring bus of back backing roll overcoat of repairing is in effectively line segment part and the basic match of logarithmic curve.
The shaping of the indent hyperbola bus of described emery wheel is to move diagonally by the grinding machine corrector, and the gradient α of this oblique line calculates according to the protrusion amount of backing roll outer ring.
Described gradient α computational methods are: β=arcos{ (grinding wheel radius-backing roll outer ring protrusion amount/2)/grinding wheel radius }
H=grinding wheel radius * sin β
α=arcsin{H/ (grinding wheel width/2) }.
The straightener backing roll of the outer ring bus of reparation back backing roll overcoat after effectively line segment part and the basic match of logarithmic curve make reparation is near best supporting effect.
The method realization that the shaping of the indent hyperbola bus of emery wheel is moved diagonally by the grinding machine corrector, simple and practical, greatly reduced rehabilitation cost, be suitable for batch jobs.
Preferably, the tolerance range of the interior raceway internal diameter of backing roll overcoat is controlled in the 0.01mm, mainly is in order to reduce the quantity of tapering plug.
Preferably, the backing roll overcoat clamps with conelet degree plug.Earlier the backing roll overcoat is heated, the conelet degree plug of in overcoat, packing into and being complementary with it, the backing roll overcoat is cooled to room temperature, is subjected to the shrinkage principle, and the backing roll overcoat is fixed on the plug.Preferably, the temperature of backing roll overcoat heating according to the linear expansion coefficient of backing roll outer ring, in this temperature, can not cause the hardness loss of backing roll outer ring at 140-160 ℃.With the interior raceway central axis of backing roll overcoat is that benchmark clamps conelet degree plug and guaranteed the reparation of straightener backing roll, added backing roll inner ring and the concentricity of outer ring in man-hour.
Preferably, the low shape in high both sides in the middle of conelet degree plug adopts.
Preferably, the tapering of conelet degree plug is controlled at 0.005-0.01mm, and selecting this number range mainly is to clamp in order promptly to be convenient to, and can make backing roll outer ring bus level and smooth again.
Preferably, conelet degree plug is maximum to be controlled at 0.004-0.006mm with the minimum outer diameter difference, mainly is in order to be more suitable for the flatness of backing roll outer ring curve.
After grinding finishes, remove conelet degree plug, the convexity of backing roll overcoat outer surface reduces 0.003-0.005mm, more approaching with logarithmic curve like this, thereby realization arc transition, reduce the edge loading of backing roll effectively, thereby improved the intensity of backing roll, realized the effect of the best carrying of straightener backing roll.
Hyperbola with emery wheel replaces logarithmic curve, has greatly reduced cost, also can obtain good repairing effect.
Description of drawings
Fig. 1 is emery wheel hyperbola of the present invention and logarithmic curve at the effective schematic diagram of the basic match of line segment part.
Fig. 2 is an emery wheel hyperbola shaping principle schematic of the present invention.
Fig. 3 is the schematic diagram of straightener backing roll overcoat and conelet degree plug assembling among the present invention.
Fig. 4 is the structural representation of the medium and small tapering plug of the present invention.
The specific embodiment
Below in conjunction with description of drawings the preferred embodiments of the present invention.
Below be an embodiment of the present invention's backing roll overcoat outer ring method for grinding when being applied to hot rolling finishing straightener backing roll and repairing:
As shown in Figure 1, interior raceway central axis with the backing roll overcoat is the machining center axis, adopt the outer ring bus of the emery wheel processing backing roll overcoat of band indent hyperbola bus, and the satisfied hyperbola bus 10 of back backing roll overcoat of repairing is in effectively line segment part and logarithmic curve 20 basic matches.The match of hyperbola and logarithmic curve is a prior art, does not repeat them here.
Referring to shown in Figure 2, the shaping of the indent hyperbola bus of described emery wheel is to move diagonally by the grinding machine corrector simultaneously, and the gradient α of this oblique line calculates according to the protrusion amount of backing roll outer ring.
Described gradient α computational methods are: β=arcos{ (grinding wheel radius-backing roll outer ring protrusion amount/2)/grinding wheel radius }
H=grinding wheel radius * sin β
α=arcsin{H/ (grinding wheel width/2) }.
Calculating is example with the wide B=180mm of emery wheel, grinding wheel diameter D=700mm, emery wheel plunge grinding workpiece protrusion amount Δ=0.006mm:
β＝arcos{(350-0.006/2)/350}＝0.2372°
H＝350×sin0.2372°＝1.449mm
α＝arcsin(1.449/90)＝0.9225°。
As shown in Figure 3, all backing roll overcoats 1 are carried out stepping according to interior raceway 11 sizes by 0.003mm, raceway is a less tolerance range in the described backing roll overcoat 1, and tolerance range is controlled in the 0.01mm;
Simultaneously referring to shown in Figure 4, stepping size according to raceway 11 in the backing roll overcoat 1 is made corresponding conelet degree plug 2, the two ends of plug 2 are provided with end face axle journal 17, transition axle journal 201 and installing hole 18, conelet degree plug 2 is controlled at 0.005-0.01mm with little tapering (being the conical surface 202 and 203) in interior raceway 11 width ranges, for example: little tapering can be controlled at 0.005mm, 0.006mm, 0.007mm, 0.008mm, 0.009mm, 0.01mm Optimal Control is in interior raceway width range the maximum outside diameter and the minimum outer diameter difference of conelet degree plug to be controlled at 0.005mm.
Earlier backing roll overcoat 1 is heated to 140-160 ℃, with pack into the interior raceway 11 of backing roll overcoat 1 of conelet degree plug 2, cooling support roller overcoat 1 is to room temperature, and the backing roll overcoat expands with heat and contract with cold and encases conelet degree plug 2 and be fixed on the conelet degree plug 2.Then to the hyperbola grinding of backing roll overcoat 1 outer surface, after removing conelet degree plug, the hyp convexity of overcoat 1 reduces 0.003-0.005mm, thereby hyperbola is seamlessly transitted, reduce the edge loading of straightener backing roll effectively, thereby improve the bearing capacity of backing roll.
The present invention in like manner also can be applicable to not repeat them here in the reparation of finishing straightener backing roll and assembling of cold rolling and Wide and Thick Slab.
Claims (5)
1. flattener support roll outside lane grinding method is characterized in that may further comprise the steps:
Interior raceway with the backing roll overcoat is a benchmark, adopt the bus of the emery wheel shaping backing roll overcoat outer ring of the hyperbola bus of being with indent, and satisfy the basic match of effective line segment part of hyperbola and logarithmic curve at backing roll overcoat outer ring bus, the hyperbola bus of described emery wheel indent is to move diagonally by the grinding machine corrector, the gradient α of this oblique line calculates according to the protrusion amount of backing roll outer ring, and gradient α computational methods are:
β=arcos{ (grinding wheel radius-backing roll outer ring protrusion amount/2)/grinding wheel radius }
H=grinding wheel radius * sin β
α=arcsin{H/ (grinding wheel width/2) }.
2. flattener support roll outside lane grinding method as claimed in claim 1 is characterized in that: the tolerance range of the interior raceway internal diameter of described backing roll overcoat is controlled in the 0.01mm.
3. flattener support roll outside lane grinding method as claimed in claim 1 or 2 is characterized in that: described backing roll overcoat clamps with conelet degree plug, and the tapering of described conelet degree plug is controlled at 0.005-0.01mm.
4. flattener support roll outside lane grinding method as claimed in claim 3 is characterized in that: the low shape in high both sides in the middle of described conelet degree plug adopts.
5. flattener support roll outside lane grinding method as claimed in claim 4 is characterized in that: described conelet degree plug is maximum to be controlled at 0.004-0.006mm with the minimum outer diameter difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100375977A CN101244526B (en) | 2007-02-15 | 2007-02-15 | Flattener support roll outside lane grinding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100375977A CN101244526B (en) | 2007-02-15 | 2007-02-15 | Flattener support roll outside lane grinding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101244526A CN101244526A (en) | 2008-08-20 |
| CN101244526B true CN101244526B (en) | 2010-08-11 |
Family
ID=39945322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100375977A Active CN101244526B (en) | 2007-02-15 | 2007-02-15 | Flattener support roll outside lane grinding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101244526B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111920B (en) * | 2011-11-16 | 2015-03-18 | 上海梅山钢铁股份有限公司 | Grinding method of approximate varying contact back-up roll roll-shaped curve by using non numerical control grinding machine |
| CN106991202A (en) * | 2016-01-21 | 2017-07-28 | 宝山钢铁股份有限公司 | A kind of roll surface optimization of profile method of hot rolling straightener back up roll group |
| CN106991266A (en) * | 2016-01-21 | 2017-07-28 | 宝山钢铁股份有限公司 | A kind of roll surface optimization of profile method of hot rolling straightener back up roll system |
| CN113334165A (en) * | 2021-06-23 | 2021-09-03 | 鞍山科德轧辊表面处理有限公司 | Grinding method for tapered roller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072625A (en) * | 1991-11-25 | 1993-06-02 | Gec阿尔斯托姆有限公司 | The laser cladding method of cylindrical workpiece |
| CN1559756A (en) * | 2004-03-05 | 2005-01-05 | 长春理工大学 | Grinding method for shaping bended surface of workpiece |
| CN1846886A (en) * | 2005-04-11 | 2006-10-18 | 江文 | Reinforced compound planar and curved roll |
-
2007
- 2007-02-15 CN CN2007100375977A patent/CN101244526B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072625A (en) * | 1991-11-25 | 1993-06-02 | Gec阿尔斯托姆有限公司 | The laser cladding method of cylindrical workpiece |
| CN1559756A (en) * | 2004-03-05 | 2005-01-05 | 长春理工大学 | Grinding method for shaping bended surface of workpiece |
| CN1846886A (en) * | 2005-04-11 | 2006-10-18 | 江文 | Reinforced compound planar and curved roll |
Non-Patent Citations (11)
| Title |
|---|
| .轧机轧辊的结构与修复.有色设备.2005,44-46. |
| .高硬度矫直辊套的堆焊修复.焊接技术35 4.2006,35(4),77-78. |
| JP昭60-244410A 1985.12.04 |
| 于孟 |
| 张小红 |
| 张小红;金柱;于孟;.高硬度矫直辊套的堆焊修复.焊接技术35 4.2006,35(4),77-78. * |
| 张长辉 |
| 杨建伟 |
| 金柱 |
| 麻祥国 |
| 麻祥国;张长辉;杨建伟;.轧机轧辊的结构与修复.有色设备.2005,44-46. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101244526A (en) | 2008-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107513677B (en) | A kind of spheroid shape face tank aluminium alloy Loadings On Hemispherical Shell method for controlling heat treatment deformation | |
| CN105583588B (en) | A kind of processing method for taper roll bearing Internal and external cycle | |
| CN101224540B (en) | Ball screw processing method | |
| CN101244526B (en) | Flattener support roll outside lane grinding method | |
| US11484924B2 (en) | Device and method for forming shaft part by two-roller flexible skew rolling | |
| CN109500188B (en) | Molybdenum crucible double-wheel offset hot-state powerful spinning forming device and method | |
| CN107263031A (en) | Cylinder is without pre-bending edge rolling moulding process | |
| CN101648332B (en) | Forming method of precision cold rolled ring of railway bearing ring piece | |
| CN108127014B (en) | The wrong method away from reversed spinning of a kind of pair of wheel | |
| KR20010022646A (en) | Method for producing steel rolling bearing rings | |
| CN101913057A (en) | Production method of low-consumable engine camshaft | |
| CN205763065U (en) | The steel construction plate leveling machinery that a kind of work efficiency is high | |
| CN206689228U (en) | A kind of spring wrap-up | |
| CN101811246A (en) | Production method of wind tower flange deformed ring forging | |
| CN101487497B (en) | Pivoting support bearing integral holder and process thereof | |
| CN101367103B (en) | Magnesium alloy sheet material flow forming and molding process | |
| CN109108569A (en) | A kind of waste and old backing roll insetting sleeve repair technique of milling train | |
| CN104138944B (en) | The anti-frame of section bar stretch wrap forming technique of drawing of wide-angle | |
| CN112247483A (en) | 2195 aluminum-lithium alloy special-shaped cross section structure and spinning method thereof | |
| CN100519063C (en) | Clip method of flattener support roll outside lane | |
| CN106514152A (en) | Processing method and device for thin-wall multi-rib titanium alloy parts | |
| CN102078882A (en) | Bushing type forged steel carrying roller | |
| CN104942537A (en) | Manufacturing method for circular rail | |
| CN105463171A (en) | Manufacturing method for austenitic stainless steel bar used for nuclear power reactor | |
| CN102950424A (en) | Preparation method of LD steel cold roll ejector for small-pore stainless seamless pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |