CN101664890A - Method for eliminating deflection in process of processing main rack of rolling mill - Google Patents
Method for eliminating deflection in process of processing main rack of rolling mill Download PDFInfo
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- CN101664890A CN101664890A CN200810043756A CN200810043756A CN101664890A CN 101664890 A CN101664890 A CN 101664890A CN 200810043756 A CN200810043756 A CN 200810043756A CN 200810043756 A CN200810043756 A CN 200810043756A CN 101664890 A CN101664890 A CN 101664890A
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- mainframe
- jack
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- main rack
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Abstract
The invention discloses a method for eliminating deflection in the process of processing a main rack of a rolling mill, which comprises the following steps of: arranging a jack between lower end facesof end parts of two lugs of the main rack, respectively arranging dial gauges between the upper end angles of the two lugs of the main rack and the right side end of the main rack, and regulating thedial gauges to position '0'; lifting the main rack upwards with the jack until gaps appear between the lower end faces of the two lugs of the main rack and two sizing blocks under the two lugs; respectively measuring the gaps between the two sizing blocks and the lower end faces of the two lugs of the main rack, adjusting the difference between the two gaps by a spacer with a thickness of a halfof the gap difference, and then loosening the jack; and adding a spacer with the same thickness on the sizing block on the lower end face of the main rack on the same side after the sizing block is added with the spacer. The method can effectively control the deflection deformation generated in the process of processing the main rack of the rolling mill.
Description
Technical field
The present invention relates to a kind of technological method for processing of main rack of rolling mill, particularly relate to a kind of the manufacturing and eliminate the method for amount of deflection in the process with control stand stretch at main rack of rolling mill.
Background technology
Mainframe in the horizontal steel rolling equipment is the most important part of whole piece steel rolling production-line.In order to guarantee the accuracy of manufacture of equipment, the part machinery of mainframe is processed with the required precision of strictness.
The monolithic weight of main rack of rolling mill reaches 50 tons～400 tons, owing to be subjected to the restriction of machining equipment, flat for sleeping in the fixing of mainframe can only be processed then, mainframe is erected during assembling again.For the heavy parts of such weight, the flat gravity of process itself that crouching will produce a certain amount of deflection deformation, if can not effectively eliminate amount of deflection in process, the deflection after the main control system frame is processed just can't guarantee the final assembly precision of milling train.
Mainframe in use is to be in upright state, if mainframe is in upright state in process, influence when the amount of deflection that its gravity produced is used mainframe so is limited, yet because machining equipment is limited in one's ability, mainframe can't be processed under upright state.
Existing mainframe processing method is: mainframe is lain on the lathe, and the deflection deformation that comes main control system frame deadweight to produce by the mode of repeatedly standing up is by measuring the whether consistent deflection deformation situation of verifying mainframe of mainframe thickness everywhere.The weak point of this method is: mainframe need repeatedly stand up on lathe, and it is very big that the part of weight like this is repeatedly stood up difficulty, wastes time and energy; And by measuring mainframe thickness everywhere, main control system frame amount of deflection is also unreliable indirectly, very likely produces error, influences the precision of mainframe.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method of eliminating amount of deflection in the main rack of rolling mill process, can effectively control the deflection deformation that main rack of rolling mill is produced in the processing and manufacturing process.
For solving the problems of the technologies described above, the method for in the main rack of rolling mill process, eliminating amount of deflection of the present invention, described mainframe is a rectangular shape, the two ends symmetry of one side is outward extended with ear, wherein:
With the medial surface of mainframe up, be placed on the face plate;
Place parallels respectively in two ears of mainframe with the lower surface at ear corresponding mainframe opposite side two ends; The following adjustment done in mainframe smoothing back:
Jack is put in centre position, lower surface in the end of mainframe two ear's sides, and the upper corners of mainframe two ear's sides and the centre position of mainframe right-hand end are provided with a dial gauge respectively, and it is adjusted to " 0 " position; With jack with the mainframe jack-up that makes progress, till all gapped between two parallels of the lower surface of mainframe two ears and its lower end; Measure the gap between two parallels and the mainframe two ear lower surfaces respectively, the difference between two gaps is aligned with pad, and the thickness of pad is half of difference gap, and pine removes jack then; After having added pad on one of them parallels, with the pad that also will add same thickness on another parallels of the mainframe lower surface of its homonymy;
Position at four parallels of mainframe respectively is provided with a dial gauge; The left and right sides end of locating in the centre position of mainframe is provided with a dial gauge and a jack respectively; After dial gauge all being transferred to " 0 " position, with mainframe jack-up, after the pointer of all dial gauges all just departed from " 0 " position, jack stopped to go up the top, reads the numerical value of dial gauge with jack; Half that records numerical value by each dial gauge adds the aiding support pad on each corresponding parallels then, makes supplemental support after perhaps half that jack is recorded numerical value by dial gauge turned down.
Owing to adopt method of the present invention, the amount of deflection during by main control system frame blank state can be eliminated the deflection deformation that is produced by the mainframe deadweight, thereby guarantees the precision of mainframe blank.
When mainframe fine finishining, it is stood up at the boring machine upside beat benchmark, eliminated of the influence of mainframe deflection deformation to the mainframe medial surface; Mainframe is pressed the datum level centering, adds man-hour on planer-type milling machine, relies on the precision of lathe itself to control the influence of the amount of deflection of generation when mainframe is edge-on to be put to mainframe again.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and the specific embodiment:
Fig. 1 is the laying state schematic diagram of mainframe, and wherein Fig. 1 (a) is that flat crouching placed, and Fig. 1 (b) erects to place, and Fig. 1 (c) is edge-on placement;
Fig. 2 is the laying state schematic diagram of mainframe in the method for the invention;
Fig. 3 is the side view of Fig. 2.
The specific embodiment
In order effectively to eliminate the amount of deflection that mainframe produces because of deadweight, the main control system frame is out of shape the influence to rolling mill precision, the deflection deformation that the present invention adopts following method to come the deadweight of main control system frame to produce.
One, amount of deflection control during mainframe blank state
Referring to shown in Figure 2, described mainframe is a rectangular shape, and the two ends symmetry of one side is outward extended with ear 2.After face plate cleaning, mark cross hairs by the length of face plate and wide center, be the center with the center of cross hairs, mark a rectangular lines.Mainframe is placed in the rectangular lines on the face plate, and makes mainframe be positioned at the centre position (purpose of doing like this be when allowing mainframe place roughly centering) of described rectangular lines.The medial surface that makes mainframe is placed parallels 1 respectively in two ears 2 of mainframe (referring to the I among Fig. 2 and the position shown in the II) with the lower surface of ear 2 corresponding mainframe opposite side two ends (referring to the III among Fig. 2 and the position shown in the IV) up.With scriber following the adjustment done in mainframe smoothing back:
Centre position, lower surface E in the end 3 of mainframe two ear's sides puts jack, the centre position B of the upper corners A of mainframe two ear's sides and mainframe right-hand end (being the right-hand end of rectangle mainframe length direction shown in Figure 2) is provided with a dial gauge respectively, and it is adjusted to " 0 " position.With jack with the mainframe jack-up that makes progress, till all gapped between two parallels 2 of the lower surface of mainframe two ear's sides and its lower end.Measure the gap between two parallels 1 and the mainframe two ear lower surfaces respectively, the difference between two gaps is aligned with pad, and the thickness of pad is half of difference gap, and pine removes jack then.After having added pad on one of them parallels 1, with the pad that also will add same thickness on another parallels 1 of the mainframe lower surface of its homonymy.For example, behind parallels 1 shimming at position I place, then the parallels 1 at position IV place is also wanted shimming; Behind parallels 1 shimming at II place, position, then the parallels 1 at position III place is also wanted shimming.
I-IV place, position at four parallels 1 of mainframe respectively is provided with a dial gauge.The left and right sides end of locating at the centre position of mainframe B (being the centre position of rectangle mainframe length direction shown in Figure 2) is provided with a dial gauge and a jack respectively.After dial gauge all being transferred to " 0 " position, with mainframe jack-up, after the pointer of all dial gauges all just departed from " 0 " position, jack stopped to go up the top with jack, read the numerical value (check and confirm and record) of dial gauge.Half that records numerical value by each dial gauge adds the aiding support pad on each corresponding parallels 1 then, makes supplemental support after perhaps half that jack is recorded numerical value by dial gauge turned down.
According to above step adjustment, the main control system frame is because of the deflection deformation that produced of deadweight fully.
Two, the control of amount of deflection during mainframe fine finishining
During fine finishining, the control of mainframe amount of deflection will directly influence the machining accuracy of mainframe.
Before mainframe carried out fine finishining, earlier mainframe is installed on the boring machine mainframe is beaten benchmark (beat benchmark and refer to process the centering datum level on mainframe).In the work top of boring machine pile crown is tied contour (promptly place pile crown on the boring table face, then each pile crown is milled flatly, make the pile crown contour), mainframe is sidelong (referring to Fig. 1 c), the inner surface of mainframe is towards lathe.With dial gauge centering mainframe, then it is fastened.Each makes a call to a centering datum level from top to bottom in its two side ends and middle part respectively with facing cutter at the inner surface of mainframe.Each makes a call to a centering datum level in the centre position of mainframe two side ends.
The location parallels is set on the work top of planer-type milling machine, and the inner surface of mainframe hangs it placing flat up on the parallels of location, and adds aiding support respectively in the two side ends and the centre position of mainframe.Proofread and correct the centering datum level with the required precision in accordance with regulations of dial gauge difference, after adjusting with pad, mainframe is fastened (compress dial gauge a little is set, the pointer of dial gauge should remain unchanged in the process that fastens), then mainframe is carried out fine finishining.
With mainframe is edge-on when putting, on boring machine, be positioned at mainframe top, middle part and bottom and process three datum levels respectively, on three datum levels, get an amount of point, adopt scanner to scan the exact position of these points, and note.When on planer-type milling machine, adding man-hour, by the accurate centering of data of scanning element on three datum levels.Like this can the deflection deformation of point-device main control system frame when fine finishining.
This is because when mainframe is edge-on when putting, the amount of deflection that gravity produces does not influence the precision of three datum levels, the centering that this moment, the data that record added man-hour as the frame flat condition is according to being quite accurately, by this data centering eliminate substantially fully the mainframe amount of deflection that gravity is produced when keeping flat.
Claims (3)
1, a kind of method of in the main rack of rolling mill process, eliminating amount of deflection, described mainframe is a rectangular shape, the two ends symmetry of one side is outward extended with ear (2), it is characterized in that:
With the medial surface of mainframe up, be placed on the face plate;
Place parallels (1) respectively in two ears (2) of mainframe with the lower surface at ear (2) corresponding mainframe opposite side two ends; The following adjustment done in mainframe smoothing back:
Jack is put in centre position, lower surface (E) in the end (3) of mainframe two ears (2) side, and the upper corners (A) of mainframe two ears (2) side and the centre position (B) of mainframe right-hand end are provided with a dial gauge respectively, and it is adjusted to " 0 " position; With jack with the mainframe jack-up that makes progress, till all gapped between the lower surface of mainframe two ears (2) and two parallels (2); Measure the gap between two parallels (1) and mainframe two ears (2) lower surface respectively, the difference between two gaps is aligned with pad, and the thickness of pad is half of difference gap, and pine removes jack then; After having added pad on the parallels (1), with the pad that also will add same thickness on another parallels (1) of the mainframe lower surface of its homonymy;
Position at four parallels (1) of mainframe respectively is provided with a dial gauge; The left and right sides end of locating in the centre position of mainframe (B) is provided with a dial gauge and a jack respectively; After dial gauge all being transferred to " 0 " position, with mainframe jack-up, after the pointer of all dial gauges all just departed from " 0 " position, jack stopped to go up the top, reads the numerical value of dial gauge with jack; Half that records numerical value by each dial gauge respectively adds the aiding support pad on each corresponding parallels then, makes supplemental support after perhaps half that jack is recorded numerical value by dial gauge turned down.
2, the method for claim 1 is characterized in that: before mainframe is carried out fine finishining, earlier mainframe is installed on the boring machine mainframe is beaten benchmark; Pile crown is tied contourly in the work top of boring machine, and mainframe is sidelong, and the inner surface of mainframe is towards boring machine; With dial gauge centering mainframe, then it is fastened; Each makes a call to a centering datum level from top to bottom in its two side ends and middle part respectively with cutterhead at the inner surface of mainframe; Each makes a call to a centering datum level in the centre position of mainframe two side ends;
The location parallels is set on the work top of planer-type milling machine, and the inner surface of mainframe hangs it placing flat up on the parallels of location, and adds aiding support respectively in the two side ends and the centre position of mainframe; Proofread and correct the centering datum level with the required precision in accordance with regulations of dial gauge difference, after adjusting with pad, mainframe is fastened, compress dial gauge a little is set, the pointer of dial gauge should remain unchanged in the process that fastens, and then mainframe is carried out fine finishining.
3, method as claimed in claim 2,, it is characterized in that: the time the edge-on placement of mainframe, on boring machine, be positioned at mainframe top, middle part and bottom and process three datum levels respectively, on three datum levels, get an amount of point, scan the position of these points, and note; When on planer-type milling machine, adding man-hour, by the data centering of scanning element on three datum levels.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100437569A CN101664890B (en) | 2008-09-03 | 2008-09-03 | Method for eliminating deflection in process of processing main rack of rolling mill |
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| CN2008100437569A CN101664890B (en) | 2008-09-03 | 2008-09-03 | Method for eliminating deflection in process of processing main rack of rolling mill |
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| CN101664890B CN101664890B (en) | 2012-03-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908972A (en) * | 2017-05-11 | 2017-06-30 | 四川长虹电器股份有限公司 | The method that Rimless liquid crystal module screen is assembled with surface frame |
| CN110682051A (en) * | 2019-08-22 | 2020-01-14 | 江苏海灵重工设备科技有限公司 | Novel process for rolling and assembling large-taper thick plate |
| CN112824025A (en) * | 2019-11-21 | 2021-05-21 | 成都飞机工业（集团）有限责任公司 | Dynamic pose leveling method for thin-wall part |
-
2008
- 2008-09-03 CN CN2008100437569A patent/CN101664890B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908972A (en) * | 2017-05-11 | 2017-06-30 | 四川长虹电器股份有限公司 | The method that Rimless liquid crystal module screen is assembled with surface frame |
| CN110682051A (en) * | 2019-08-22 | 2020-01-14 | 江苏海灵重工设备科技有限公司 | Novel process for rolling and assembling large-taper thick plate |
| CN112824025A (en) * | 2019-11-21 | 2021-05-21 | 成都飞机工业（集团）有限责任公司 | Dynamic pose leveling method for thin-wall part |
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| CN101664890B (en) | 2012-03-21 |
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Effective date of registration: 20161220 Address after: 200245 Jiangchuan Road, Shanghai, No. 230, building 1800, No. Patentee after: Shanghai electric heavy milling special equipment Co. Ltd. Patentee after: Shanghai Heavy-Machine Factory Co., Ltd. Address before: 200245 Jiangchuan Road, Shanghai, No. 1800, No. Patentee before: Shanghai Heavy-Machine Factory Co., Ltd. |
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