CN102950172B - Correction method and device of flatness of metal plate - Google Patents
Correction method and device of flatness of metal plate Download PDFInfo
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- CN102950172B CN102950172B CN201210439269.0A CN201210439269A CN102950172B CN 102950172 B CN102950172 B CN 102950172B CN 201210439269 A CN201210439269 A CN 201210439269A CN 102950172 B CN102950172 B CN 102950172B
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Abstract
The invention discloses a correction method and a correction device of flatness of a metal plate, which overcome the deficiency that the metal plate bends again due to elastic resilience when the metal plate is leveled by the metal plate leveling method and device in the prior art. The correction device of flatness of the metal plate comprises a reference platform which is provided with a plurality of fixed screws and a plate mandril. Compression blocks with stripe holes are arranged on the fixed screws. Compression nuts in threaded connection with the fixed screws are arranged above the compression blocks. The correction method of flatness of the metal plate and the device provided by the invention are suitable for occasions of previous metal plate leveling device, and have the advantages that the problem that the leveled metal plate bends again due to elastic resilience is solved and the holes in the metal plate are protected, and the like.
Description
Technical field
The invention belongs to mechanical processing technique technical field, particularly relate to the bearing calibration of a kind of metal sheet flatness and device thereof.
Background technology
In machinery industry, metal sheet, due to the characteristic of material itself and the impact of various extraneous factor, easily produces bending, causes the flatness on its surface not reach standard-required, therefore often can need correction metal sheet being carried out to flatness.Conventional method corrects for the flatness of metal sheet, basic employing is the flat or method flattened by the depression on plate, protruding top, such as utilize levelling machine to flatten metal sheet or utilize the depression on other device top flat metal plates, protruding method realizes correcting.But metal itself exists necessarily flexible, the depression on metal sheet, protruding after being leveling, have certain bounce-back amount of recovery, therefore after utilizing the device smoothings such as levelling machine, metal sheet easily produces elastic recovery, again bends; Again due in actual production, with the hole of various shape on a lot of metal sheet, this type of metal sheet is when smoothing, if smoothing part is near hole, then be easy to the hole on plate is deformed along with the smoothing distortion of depression, projection, cause the inner edge, hole of smoothing on rear plate that moderate finite deformation occurs, thus affect the quality of finished metal plate.
See disclosed " levelling machine " in Chinese patent literature, its notification number is CN101856680B, this levelling machine, be suitable for the smoothing of high-strength steel sheet, levelling machine, comprise rack section, working roll part, pressure part and main transmission section, rack section inside is provided with working roll part, the top of working roll part is provided with pressure part, and main transmission section is positioned at the side of rack section; Four angles of base are provided with 4 root posts, are provided with housing cap, are fixed between the column of both sides by tie-beam above column, base is provided with lower row's working roll, pressure part is positioned at the below of tie-beam; The both sides of upper row's working roll are provided with guide roller, and upper row's working roll and guide roller are fixed on the below of pressure part, and lower row's working roll is positioned at the below of row's working roll, and the top of upper row's working roll and the below of lower row's working roll are provided with support roller device.
See disclosed " steel plate bending correction device " in Chinese patent literature, its notification number CN202316664U, this steel plate bending correction device, comprise the left spill card of handstand and the right spill card that stands upside down, cross bar is installed with in the groove of the left and right spill card stood upside down, cross bar is more than or equal to 50mm apart from left and right spill card top, cross bar and be arranged on being corrected between steel plate of cross bar bottom and be provided with wedge.
The device of the above-mentioned type and flattening method thereof is adopted to carry out metal sheet smoothing, effectively can not solve the problem that metal sheet is leveling rear easy generation elastic recovery, metal sheet after smoothing is easy elastic recoil still, and when time with holes on metal sheet, if depression, bossing are near hole, when smoothing easily because depression, protruding smoothing are out of shape and are caused the plate within the scope of adjacent holes to be extruded and moderate finite deformation occurs, there is moderate finite deformation in final causing hole inner edge.
Although the metal sheet flattening method of prior art is not quite similar; but its principle is all utilize the crooked position of leveling apparatus to metal sheet to provide pressure; by metal sheet surface pressure to level; although the method can realize the correction to metal sheet flatness; but the problem of bending springback can not being solved, can not protect when smoothing the hole on metal sheet.
And in the present invention, by the depression on jack stand metal sheet, the height of jack-up exceeds the degree of depth of metal sheet depression, jack-up height unnecessary so just serves the effect of counteracting to the bounce-back amount of recovery of metal sheet.Meanwhile, after curvature correction, also utilize support bar to shape more than 2 minutes, fully serve the effect maintaining calibration result.
As preferably, in step c, be 10% to 25% of original cup depth by the distance that depression upwards continues jack-up.In order to effectively avoid bending springback to correct the impact of back plane degree to metal sheet, distance value depression being continued upwards jack-up should at 10% to 25% of original cup depth, if otherwise secondary jack-up apart from excessive, also can cause the adverse effect that back-flexing is excessive.
As preferably, between step b and step c, increase hole shape protection step, specific as follows:
Stereotype plate being placed on metal sheet needs the protected hole of the need near smoothing place upper and lower, and stereotype plate covers protected hole completely, then by fastened to each other between stereotype plate and make it be close on metal sheet.If the bending position that need smooth from hole very close to, when then the sweep of metal sheet is out of shape, the plate of meeting extruded hole in-scope periphery also deforms, there is moderate finite deformation in the inner edge, hole finally caused, and the upper and lower surface in the hole near the place of being corrected can cover by stereotype plate completely, then fixing tight, so, when metal sheet near hole deforms, just very little on the impact in hole, inner edge, hole also can not occur upper and lower to distortion, ensure that the hole on metal sheet can not produce distortion because of curvature correction.
A kind of metal sheet flatness means for correcting, comprise reference platform, described reference platform is provided with some standing screws, sheet material push rod, and described standing screw is provided with the compact heap of band bar hole, is provided with the clamp nut be threaded with standing screw above described compact heap.Compact heap there is bar hole, can along standing screw slide anteroposterior, the metal sheet lower end sheet material push rod that need correct withstands, upper end compact heap is pushed down, then clamp nut is tightened, the selection of fixing point can change according to the difference of sheet material size, shape, and only needing can be fixing preferably by metal sheet.Just can measure the recessed position of metal sheet after fixedly completing, and smooth with jack.
As preferably, it is T-shaped T-slot that described reference platform is provided with some vertical sections, described standing screw lower end is provided with the base head corresponding with T-slot, the T-slot at described standing screw and himself place is slidably connected, described T-slot is parallel to be distributed on reference platform and to run through reference platform both sides, and the spacing of adjacent T-slot is equal.Standing screw can in T-slot any slidable adjustment position, adapt to difform metal sheet, and the usage quantity of standing screw also can according to the size of metal sheet, shape unrestricted choice.
As preferably, described standing screw is provided with long school shape pressing plate, described long school shape pressing plate is provided with bar hole, is provided with the clamp nut be threaded with standing screw above described long school shape pressing plate, and described long school shape pressing plate is at least passed by two standing screws.Metal sheet likely there will be the protruding bending status of ining succession that caves in, if now carry out jack-up correction to depression and correction distance exceeds cup depth, larger distortion can be there is in the projection of ining succession with it, now can first long school shape pressing plate be pressed in projection, and its two ends are enclosed within respectively on two standing screws, and press down long school shape pressing plate with clamp nut, make its lower surface height identical with upper level metal sheet is fixed a little, and then go to repair depression with jack, can avoid, with the projection of ining succession that caves in, more large deformation occurs.
As preferably, also comprise some sizing double plates, described sizing double plate comprises two pieces of stereotype plates, and described stereotype plate is dull and stereotyped, and described stereotype plate is provided with bolt hole, and described bolt hole is provided with the bolt corresponding with bolt hole and nut.The upper and lower surface in the hole near the place of being corrected can cover by stereotype plate completely, then fix tight with bolt, nut, so, when metal sheet near hole deforms, just very little on the impact in hole, inner edge, hole also can not occur upper and lower to distortion, ensure that the hole on metal sheet can not produce distortion because of curvature correction.
As preferably, described reference platform is provided with some auxiliary steady arms, and described auxiliary steady arm is in below compact heap and the top of auxiliary steady arm and contacts with compact heap lower surface.Auxiliary steady arm below compact heap can prop up compact heap one end away from metal sheet, plays the effect of stable compact heap, avoids compact heap generation lateral deviation to cause its lower surface not to be horizontal simultaneously, enables compact heap better compress metal sheet.
As preferably, described compact heap is fillet near an end section outer rim of the metal sheet that is fixed.Compact heap contacts with metal sheet upper surface after fixing metal plate near the one end of the metal sheet that is fixed, and this cross section, place outer rim is that fillet can be avoided scraping damage, scratch metal sheet, ensures the surface quality of metal sheet.
Therefore, the invention has the beneficial effects as follows: (1) effectively can solve metal sheet problem again bending because of elastic recovery after being leveling; (2) be no less than 2 minutes the correction time of each point, can fully ensure to correct dimension shape effect; (3) there is sizing double plate framework, the hole on metal sheet can be protected, make it can not deform because of curvature correction.
Summary of the invention
The object of the invention is metal sheet flattening method in order to solve prior art and device can not effectively solve deficiency metal sheet being bent again because of elastic recoil when smoothing metal sheet, providing and a kind ofly can solve the metal sheet metal sheet flatness bearing calibration again bending because of elastic recoil and device thereof.
Another object of the present invention is metal sheet flattening method in order to solve prior art and device when smoothing the porose metal sheet of band, if the bending position that need smooth from hole very close to, when then the sweep of metal sheet is out of shape, the plate of meeting extruded hole in-scope periphery also deforms, there is the deficiency of moderate finite deformation in the inner edge, hole that finally causes, not easily causes hole that the bearing calibration of metal sheet flatness and the device thereof of moderate finite deformation occur when providing a kind of bending on calibration metal plate near hole.
The present invention is achieved by the following technical solutions:
The bearing calibration of a kind of metal sheet flatness, be applicable to correct the flatness with bending metal sheet, it comprises the following steps:
A. by unsettled for metal sheet lower end, select some fixing points to be fixed on the table along metal sheet outward flange, the level altitude of all fixing points is identical.
B. the height of each point on metal sheet measured by utilization measure instrument, and records the height value of test point, with fixing point aspect ratio pair, marks depression points and calculates cup depth.
C. be placed in by jack below metal sheet recess, first utilize jack by depression jack-up to identical with the level altitude of fixing point, then continue to rise jack, will cave in upwards continuation jack-up one segment distance.
D. the support bar of one or some adjustment heights is placed in jack nearside, is adjusted to and contourly with jack is corrected depression in order to prop up, and at least keep 2 minutes.
E., after the depression of one side all being smoothed, upset metal sheet, repeats above-mentioned steps, completes the smoothing of another side.
F. measure the flatness of metal sheet, if reach requirement, complete smoothing operation, if do not reach requirement, continue to repeat above-mentioned steps.
Accompanying drawing explanation
Fig. 1 is explosive view of the present invention;
Fig. 2 is that the present invention shapes the structural representation of double plate.
In figure: reference platform 1, standing screw 2, sheet material push rod 3, compact heap 4, clamp nut 5, T-slot 6, long school shape pressing plate 7, stereotype plate 8, bolt 9, auxiliary steady arm 10.
Detailed description of the invention
Below by embodiment, by reference to the accompanying drawings technical scheme of the present invention is described further:
The bearing calibration of a kind of metal sheet flatness, be applicable to correct the flatness with bending metal sheet, it comprises the following steps:
A. by unsettled for metal sheet lower end, select some fixing points to be fixed on reference platform 1 along metal sheet outward flange, the level altitude of all fixing points is identical.
B. the height of each point on metal sheet measured by utilization measure instrument, and records the height value of test point, with fixing point aspect ratio pair, marks depression points and calculates cup depth.
C. be placed in by jack below metal sheet recess, first utilize jack by depression jack-up to identical with the level altitude of fixing point, then continue to rise jack, will cave in upwards continuation jack-up one segment distance.
D. the support bar of one or some adjustment heights is placed in jack nearside, is adjusted to and contourly with jack is corrected depression in order to prop up, and at least keep 2 minutes.
E., after the depression of one side all being smoothed, upset metal sheet, repeats above-mentioned steps, completes the smoothing of another side.
F. measure the flatness of metal sheet, if reach requirement, complete smoothing operation, if do not reach requirement, continue to repeat above-mentioned steps.
In the present invention, by the depression on jack stand metal sheet, the height of jack-up exceeds metal sheet place and is pushed up to height during surface level, so just the bounce-back amount of recovery of metal sheet is served to the effect of counteracting.Meanwhile, after curvature correction, also utilize support bar to shape more than 2 minutes, fully serve the effect maintaining calibration result.In step c, be 10% to 25% of original cup depth by the distance that depression upwards continues jack-up.In order to effectively avoid bending springback to correct the impact of back plane degree to metal sheet, distance value depression being continued upwards jack-up should at 10% to 25% of original cup depth, if otherwise secondary jack-up apart from excessive, also can cause the adverse effect that back-flexing is excessive.
And hole shape protection step can be increased between step b and step c, specific as follows:
Stereotype plate 8 being placed on metal sheet needs the protected hole of the need near smoothing place upper and lower, and stereotype plate 8 covers protected hole completely, then by fastened to each other between stereotype plate 8 and make it be close on metal sheet.If the bending position that need smooth from hole very close to, when then the sweep of metal sheet is out of shape, the plate of meeting extruded hole in-scope periphery also deforms, there is moderate finite deformation in final causing hole inner edge, and the upper and lower surface in the hole near the place of being corrected can cover by stereotype plate 8 completely, then fixing tight, so, when metal sheet near hole deforms, just very little on the impact in hole, inner edge, hole also can not occur upper and lower to distortion, ensure that the hole on metal sheet can not produce distortion because of curvature correction.
In order to adapt with above-mentioned fluid on-off method, as shown in Figure 1 and Figure 2, a kind of metal sheet flatness means for correcting of the present invention, comprise reference platform 1, described reference platform 1 is provided with some standing screws 2, sheet material push rod 3, described standing screw 2 is provided with the compact heap 4 of band bar hole, is provided with the clamp nut 5 be threaded with standing screw 2 above described compact heap 4.Just can measure the recessed position of metal sheet after fixedly completing, and smooth with jack.It is T-shaped T-slot 6 that described reference platform 1 is provided with some vertical sections, described standing screw 2 lower end is provided with the base head corresponding with T-slot 6, described standing screw 2 is slidably connected with the T-slot 6 at himself place, described T-slot 6 is parallel to be distributed on reference platform 1 and to run through reference platform 1 both sides, and the spacing of adjacent T-slot 6 is equal.Standing screw 2 can in T-slot 6 any slidable adjustment position, adapt to difform metal sheet, and the usage quantity of standing screw 2 also can according to the size of metal sheet, shape unrestricted choice.Described standing screw 2 is provided with long school shape pressing plate 7, described long school shape pressing plate 7 is provided with bar hole, be provided with the clamp nut 5 be threaded with standing screw 2 above described long school shape pressing plate 7, described long school shape pressing plate 7 is at least passed by two standing screws 2.Also comprise some sizing double plates, described sizing double plate comprises two pieces of stereotype plates 8, and described stereotype plate 8 is dull and stereotyped, and described stereotype plate 8 is provided with bolt hole, and described bolt hole is provided with the bolt 9 corresponding with bolt hole and nut.Described reference platform 1 is provided with some auxiliary steady arms 10, and described auxiliary steady arm 10 is in below the compact heap 4 and top of auxiliary steady arm 10 and contacts with compact heap 4 lower surface.Auxiliary steady arm 10 below compact heap 4 can prop up compact heap 4 one end away from metal sheet, play the effect of stable compact heap 4, avoid compact heap 4 that lateral deviation occurs causes its lower surface not to be horizontal simultaneously, makes compact heap 4 better can compress metal sheet.Described compact heap 4 is fillet near an end section outer rim of the metal sheet that is fixed.Compact heap 4 contacts with metal sheet upper surface after fixing metal plate near the one end of the metal sheet that is fixed, and this cross section, place outer rim is that fillet can be avoided scraping damage, scratch metal sheet, ensures the surface quality of metal sheet.
When needs are smoothed metal sheet, the metal sheet that need correct chooses several fixing point, withstand with some sheet material push rods 3 in fixing point lower end, the some compact heaps 4 in upper end are pushed down, standing screw 2 is stretched in the bar hole on compact heap 4, then clamp nut 5 to be screwed on standing screw 2 and to tighten, compact heap 4 supports with auxiliary steady arm 10 away from one end of sheet metal, the selection of fixing point can change according to the difference of sheet material size, shape, and only needing can be fixing preferably by metal sheet.The height of each point on metal sheet measured by utilization measure instrument such as vernier height gauge, and records the height value of test point, with fixing point aspect ratio pair, marks depression points and calculates cup depth.First utilize jack by depression jack-up to identical with the level altitude of fixing point, then continue to rise jack, depression is upwards continued jack-up, and continuing jack-up is highly 15% of original cup depth.The support bar of one or some adjustment heights is placed in jack nearside, is adjusted to and contourly with jack is corrected depression in order to prop up, and at least keep 2 minutes.In smoothing process, likely to run on metal sheet depression in succession protruding bending status, if now carry out jack-up correction to depression and correction distance exceeds cup depth, larger distortion can be there is in the projection of ining succession with it, now can first long school shape pressing plate 7 be pressed in projection, and its two ends are enclosed within respectively on two standing screws 2, and press down long school shape pressing plate 7 with clamp nut 5, make its lower end identical with the level altitude of metal sheet, and then go to repair depression with jack, so both once repaired in advance being raised with, can avoid again, with the projection of ining succession that caves in, more large deformation occurs.Stereotype plate 8 can upper by the hole that is corrected near place, lower surface covers completely, then bolt 9 is used, nut is fixing tight, hole thus on metal sheet is just finalized plate 8 and covers completely and firmly touch, play a protective role, inherently have less bending near hole on metal sheet if against, so aforesaid operations serves certain corrective action to bending, and when using jack to correct from bending close to protected hole, also will cause the hole on sheet metal that moderate finite deformation occurs because of the displacement transfer of sheet metal, fully play the effect of hole shape protection.After the one side of metal sheet is corrected completely, then by metal sheet turn-over, repeat above process, the smoothing to metal sheet can be completed.
Claims (8)
1. a metal sheet flatness bearing calibration, be applicable to correct the flatness with bending metal sheet, it comprises the following steps:
A. by unsettled for metal sheet lower end, select some fixing points to be fixed on reference platform (1) along metal sheet outward flange, the level altitude of all fixing points is identical;
B. the height of each point on metal sheet measured by utilization measure instrument, and records the height value of test point, with fixing point aspect ratio pair, marks depression points and calculates cup depth;
C. be placed in by jack below metal sheet recess, first utilize jack by depression jack-up to identical with the level altitude of fixing point, then continue to rise jack, will cave in upwards continuation jack-up one segment distance;
D. the support bar of one or some adjustment heights is placed in jack nearside, is adjusted to and contourly with jack is corrected depression in order to prop up, and at least keep 2 minutes;
E., after the depression of one side all being smoothed, upset metal sheet, repeats above-mentioned steps, completes the smoothing of another side;
F. measure the flatness of metal sheet, if reach requirement, complete smoothing operation, if do not reach requirement, continue to repeat above-mentioned steps.
2. a kind of metal sheet flatness according to claim 1 bearing calibration, is characterized in that, in step c, is 10% to 25% of original cup depth by the distance that depression upwards continues jack-up.
3. a kind of metal sheet flatness according to claim 1 bearing calibration, is characterized in that, increases hole shape protection step between step b and step c, specific as follows:
Stereotype plate (8) being placed on metal sheet needs the protected hole of the need near smoothing place upper and lower, and stereotype plate (8) covers protected hole completely, then by fastened to each other between stereotype plate (8) and make it be close on metal sheet.
4. a metal sheet flatness means for correcting, comprise reference platform (1), it is characterized in that, described reference platform (1) is provided with some standing screws (2), sheet material push rod (3), described standing screw (2) is provided with the compact heap (4) of band bar hole, described compact heap (4) top is provided with the clamp nut (5) be threaded with standing screw (2), it is T-shaped T-slot (6) that described reference platform (1) is provided with some vertical sections, described standing screw (2) lower end is provided with the base head corresponding with T-slot (6), described standing screw (2) is slidably connected with the T-slot (6) at himself place, also comprise some sizing double plates, described sizing double plate comprises two pieces of stereotype plates (8), described stereotype plate (8) is dull and stereotyped, described stereotype plate (8) is provided with bolt (9) hole, described bolt (9) hole is provided with the bolt (9) corresponding with bolt (9) hole and nut.
5. a kind of metal sheet flatness means for correcting according to claim 4, it is characterized in that, described standing screw (2) is provided with long school shape pressing plate (7), described long school shape pressing plate (7) is provided with bar hole, described long school shape pressing plate (7) top is provided with the clamp nut (5) be threaded with standing screw (2), and described long school shape pressing plate (7) is at least passed by two standing screws (2).
6. a kind of metal sheet flatness means for correcting according to claim 4, is characterized in that, the parallel reference platform (1) that is distributed in of described T-slot (6) is gone up and runs through reference platform (1) both sides, and the spacing of adjacent T-slot (6) is equal.
7. a kind of metal sheet flatness means for correcting according to claim 4 or 5, it is characterized in that, described reference platform (1) is provided with some auxiliary steady arms (10), and described auxiliary steady arm (10) is in compact heap (4) below and the top of auxiliary steady arm (10) contacts with compact heap (4) lower surface.
8. a kind of metal sheet flatness means for correcting according to claim 4 or 5, is characterized in that, described compact heap (4) is fillet near an end section outer rim of the metal sheet that is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210439269.0A CN102950172B (en) | 2012-11-07 | 2012-11-07 | Correction method and device of flatness of metal plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210439269.0A CN102950172B (en) | 2012-11-07 | 2012-11-07 | Correction method and device of flatness of metal plate |
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| CN102950172A CN102950172A (en) | 2013-03-06 |
| CN102950172B true CN102950172B (en) | 2015-02-04 |
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| CN201210439269.0A Expired - Fee Related CN102950172B (en) | 2012-11-07 | 2012-11-07 | Correction method and device of flatness of metal plate |
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| CN104028944B (en) * | 2013-03-08 | 2016-08-10 | 鸿准精密模具（昆山）有限公司 | Apparatus for shaping and detent mechanism thereof |
| CN103894487B (en) * | 2014-03-27 | 2016-04-27 | 宝山钢铁股份有限公司 | A kind of module backboard part flatness adjustment method of feature based mould |
| CN105318802A (en) * | 2015-05-25 | 2016-02-10 | 合肥皓东精密工业有限公司 | Novel square leveling test tool of metal bottom surface |
| CN105728501B (en) * | 2016-04-29 | 2018-06-19 | 国网山东省电力公司汶上县供电公司 | A kind of plank apparatus for leveling |
| CN106289018A (en) * | 2016-09-21 | 2017-01-04 | 合肥皓东精密工业有限公司 | A kind of novel metal section bar location smoothing cubing |
| CN107791054A (en) * | 2017-10-27 | 2018-03-13 | 江苏金仕达汽配科技有限公司 | A kind of Sheet Metal Processing fixture and its processing method |
| CN111283016B (en) * | 2020-03-12 | 2021-10-08 | 海盐县精兴模具有限公司 | Die steel deformation correcting device |
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| JP2735087B2 (en) * | 1992-10-02 | 1998-04-02 | 株式会社山本水圧工業所 | Self-propelled straightening device |
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| US4915342A (en) * | 1988-10-11 | 1990-04-10 | Car-O-Liner Company | Chain anchor clamp device |
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