CN102974687B - A kind of annular special cambered surface section welding fixture and preparation method thereof - Google Patents
A kind of annular special cambered surface section welding fixture and preparation method thereof Download PDFInfo
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- CN102974687B CN102974687B CN201110259357.8A CN201110259357A CN102974687B CN 102974687 B CN102974687 B CN 102974687B CN 201110259357 A CN201110259357 A CN 201110259357A CN 102974687 B CN102974687 B CN 102974687B
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Abstract
The present invention relates to mould molding field, particularly relate to a kind of annular special cambered surface section welding fixture and preparation method thereof, it is characterized in that, hot pressing mold is made with the method for welding, meet annular special cambered surface section formed precision, described a kind of annular special cambered surface section welding fixture, corresponding 45 ° of special-shaped cambered surfaces, comprise tire and lower tire, described upper tire comprises upper cover plate, upper pressure cambered surface coaming plate and upper tire location gusset, is evenly arranged between upper cover plate and upper pressure cambered surface coaming plate more than the upper tire location gusset of 4 pieces along special-shaped cambered surface radial direction; Described lower tire comprises lower cover, presses down cambered surface coaming plate and lower tire location gusset, and lower tire location gusset is evenly arranged on lower cover along special-shaped cambered surface radial direction and presses down between cambered surface coaming plate.Compared with prior art, the invention has the beneficial effects as follows: welding positioner has saved lot of materials and fine finishining expense than casting mold, make longitudinal joint group between lobe and lobe to unfitness of butt joint≤2mm, postwelding allowance controls within ± 5mm.
Description
Technical field
The present invention relates to mould molding field, particularly relate to a kind of annular special cambered surface section welding fixture and preparation method thereof.
Background technology
Annular special cambered surface section is applied in multiple frame for movement, wherein water power outer gate barrel is the important component part of bulb through-flow turbine water distributor, see accompanying drawing 4, similar frustum structure, body is 55mm steel plate, the revolving body formed around a certain central shaft rotating 360 degrees for bus with the curve of the tangent formation of two incorgruous arcs.The shaping mostly of this special-shaped cambered surface section adopt casting numerical control finishing mold to divide 8 lobes hot-forming in the past, be welded after hot-forming, consider that welding deformation and postwelding ensure appropriate allowance and do not allow thinning, require very strict to the formed precision of this type of special-shaped cambered surface section.Casting mold is heavy greatly, and consume material many, the mold after accurate machine adds often overlaps heavily about 40 tons, and the fine finishining in die mould face must adopt three-dimension numerical controlled lathe in addition, and processing charges is high, and Production Time is long.
Summary of the invention
The object of this invention is to provide a kind of annular special cambered surface section welding fixture and preparation method thereof, make hot pressing mold with the method for welding, while meeting outer gate barrel abnormity cambered surface section formed precision, reduce production cost, enhance productivity.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of annular special cambered surface section welding fixture, corresponding 45 ° of special-shaped cambered surfaces, comprise tire and lower tire, described upper tire comprises upper cover plate, end plate one, end plate two, upper pressure cambered surface coaming plate and upper tire location gusset, evenly be arranged between upper cover plate and upper pressure cambered surface coaming plate more than the upper tire location gusset of four pieces along special-shaped cambered surface radial direction, adjacent upper tire location gusset ultimate range is not more than 200mm, and the two ends of upper tire location gusset are respectively equipped with end plate one and end plate two; Described lower tire comprises lower cover, end plate three, end plate four, presses down cambered surface coaming plate and lower tire location gusset, lower tire location gusset is evenly arranged on lower cover along special-shaped cambered surface radial direction and presses down between cambered surface coaming plate, and the two ends of lower tire location gusset are respectively equipped with end plate three and end plate four.
Described upper tire location gusset and lower tire are located the angle that gusset distributes and are no less than 48 °, the identical and position one_to_one corresponding of quantity.
Steam vent gusset being respectively equipped with 2 ~ 3 diameter phi 60 ~ 90mm located by described upper tire location gusset and lower tire.
Described upper tire location gusset and lower tire are located gusset the narrowest place width and are 60 ~ 100mm.
A preparation method for annular special cambered surface section welding fixture, comprises the steps:
1) upper tire location gusset and lower tire positioning bar board size calculate:
Annular special cambered surface section size hot-forming as required determines each piece of upper tire location gusset and lower tire positioning bar board size;
2) thickness of slab correcting process:
Step 1) in upper tire location gusset and lower tire locate gusset width and gets it and be positioned at cover plate adjacent with it and press cambered surface coaming plate beeline, make group in process above tire locate gusset and gusset located by upper cover plate, lower tire and lower cover contact jaw forms nature groove;
3) welding:
First by upper cover plate and end plate two, angle and set of locations install on request, upper cover plate and end plate two are made each on the mark of exact position of tire location gusset, and by centre to both sides successively group gusset is located to each upper tire, then group is to end plate one, adopts and carries out symmetrical welding from centre to the welding sequence of both sides;
By lower cover and end plate three, angle and set of locations install on request, lower cover and end plate three are made the mark of the exact position of each lower tire location gusset, and by centre to both sides successively group gusset is located to each lower tire, then group is to end plate four, adopts and carries out symmetrical welding from centre to the welding sequence of both sides;
4) assembling of up/down pressure cambered surface coaming plate:
Step 3) welding after, get two blocks of 20 ~ 25mm steel plates conformed to die mould motherboard appearance and size die mould motherboard is clipped in the middle fixes and weld solid, molded together after being heated to 1100 ~ 1150 DEG C, inspection is pressed cambered surface coaming plate and upper tire locate gusset, press down cambered surface coaming plate and lower tire locate gusset fit tight after, respectively upper pressure cambered surface coaming plate and upper tire located gusset, press down cambered surface coaming plate and gusset firm welding located by lower tire, binding face adopts plug welding to fix;
5) make three-dimensional template, control formed precision:
Different directions clean cut edge sweep gauge after adopting 5 ~ 8mm steel plate Numerical control cutting motherboard shaping, and assembling fixedly is welded into three-dimensional template on pressure testing motherboard, for accuracy checking after formal die mould and only expect to cut.
Compared with prior art, the invention has the beneficial effects as follows: welding positioner has saved lot of materials and fine finishining expense than casting mold, and control internal model making precision by strict, employing three-dimensional template checks, ensure that the formed precision of special-shaped cambered surface well, 100% 1 time swaging is qualified, makes longitudinal joint group between lobe and lobe to unfitness of butt joint≤2mm, postwelding allowance controls, within ± 5mm, to meet drawing and correlation technique quality requirement well.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation;
Fig. 2 is the A-A sectional view in Fig. 1;
Fig. 3 is three-dimensional template structural representation of the present invention;
Fig. 4 is water power outer gate barrel abnormity cambered surface busbar cross-section schematic diagram.
In figure: under 1-upper cover plate 2-end plate one 3-end plate two 4-pressing tire location gusset 6-lower cover 7-end plate three 8-end plate four 9-on cambered surface coaming plate 5-press down cambered surface coaming plate 10-, gusset 11-steam vent 12-boundary curve model 13-steel pipe 14-die mould motherboard located by tire
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
See Fig. 1, it is a kind of annular special cambered surface section welding fixture example structure of the present invention schematic diagram, comprise tire and lower tire, corresponding to 45 ° of special-shaped cambered surfaces, upper tire comprises upper cover plate 1, end plate 1, end plate 23, upper pressure cambered surface coaming plate 4 and upper tire location gusset 5, evenly be arranged between upper cover plate 1 and upper pressure cambered surface coaming plate 4 more than the upper tire location gusset 5 of 4 pieces along special-shaped cambered surface radial direction, the two ends of upper tire location gusset 5 are respectively equipped with end plate 1 and end plate 23; Lower tire comprises lower cover 6, end plate 37, end plate 48, presses down cambered surface coaming plate 9 and lower tire location gusset 10, evenly be arranged on lower cover 6 more than the lower tires location gussets 10 of 4 pieces along special-shaped cambered surface radial direction and press down between cambered surface coaming plate 9, the two ends of lower tire location gusset 10 are respectively equipped with end plate 37 and end plate 48.
The preparation method of this water power outer gate barrel special cambered surface section welding fixture, comprises the steps:
1) upper tire location gusset and lower tire positioning bar board size calculate:
Upper tire location gusset 5 and lower tire are located gusset 10 and are determined according to required hot-forming outer gate barrel abnormity cambered surface segmental arc size, for ensureing die mould precision, 60 ~ 90mm surplus is stayed at the short transverse two ends that gusset 10 located by upper tire location gusset 5 and lower tire, outer gate barrel abnormity cambered surface section 360 ° of circumference divide 8 lobes molded, every lobe 45 °, upper tire location gusset 5 is located gusset 10 distribution with lower tire and is ensured to be greater than 48 °, adjacent upper tire location gusset 5 locates gusset 10 spacing≤200mm with lower tire, the quantity that gusset 10 located by upper tire location gusset 5 and lower tire is defined as each 15 pieces, identical and the position one_to_one corresponding of gusset 10 quantity located by upper tire location gusset 5 and lower tire,
It is as far as possible narrow that gusset 10 width located by upper tire location gusset 5 and lower tire, namely mold height is little as far as possible, upper tire location gusset 5 is located gusset 10 the narrowest place width with lower tire and is 60 ~ 100mm, mold is made to have enough integral rigidities and stability, upper tire location gusset 5 locates with lower tire the steam vent 11 gusset 10 being respectively equipped with 2 ~ 3 diameter phi 60 ~ 90mm, be conducive to heat like this to evacuate in time, when avoiding the die mould time long, assembling heat in mold causes mold to be out of shape, affect die mould precision, can die mould motherboard 14 be included in mold during die mould, motherboard is avoided to expose mold outside left die mould precision inadequate.
2) thickness of slab correcting process:
See Fig. 2, upper tire location gusset 5 and lower tire are located gusset 10 width and are got it at cover plate adjacent with it with press beeline between cambered surface coaming plate, namely play tire to locate gusset width to be as the criterion by centerline side size with thickness of slab, upper tire location gusset width with thickness of slab dorsad centerline side size be as the criterion, on like this in group is to process, the natural groove that gusset 10 and lower cover 6 contact jaw will form different angles located by tire location gusset 5 and upper cover plate 1, lower tire, to guarantee weldquality and mold precision;
3) welding:
First by upper cover plate 1, angle and set of locations install on request with end plate 23, upper cover plate 1 and end plate 23 are made each on the mark of exact position of tire location gusset 5, and by centre to both sides successively group gusset 5 is located to each upper tire, then group is to end plate 1, adopt and carry out symmetrical welding from centre to the welding sequence of both sides, attentional manipulation welding deformation;
By lower cover 6, angle and set of locations install on request with end plate 37, lower cover 6 and end plate 37 are made the mark of the exact position of each lower tire location gusset 10, and by centre to both sides successively group gusset 10 is located to each lower tire, then group is to end plate 48, adopt and carry out symmetrical welding from centre to the welding sequence of both sides, attentional manipulation welding deformation;
4) assembling of up/down pressure cambered surface coaming plate:
Step 3) welding after, get two blocks of 15 ~ 20mm steel plates conformed to die mould motherboard 14 appearance and size die mould motherboard 14 is clipped in the middle fixes and weld solid, put into heating furnace to heat, put in the middle of tire and lower tire molded after being heated to 1100 ~ 1150 DEG C together, inspection is pressed cambered surface coaming plate 4 and upper tire locates gusset 5, press down cambered surface coaming plate 9 and lower tire locate gusset 10 fit tight after, respectively upper pressure cambered surface coaming plate 4 and upper tire locates gusset 5, press down cambered surface coaming plate 9 and locate gusset 10 firm welding with lower tire, binding face employing plug welding is fixed;
5) make three-dimensional template, control formed precision:
See Fig. 3, the different directions clean cut edge sweep gauge 12 after adopting 5mm steel plate Numerical control cutting motherboard shaping, and assembling is fixing on die mould motherboard, is welded into three-dimensional template by steel pipe 13, for accuracy checking after formal die mould and clean material cutting benchmark.
Claims (1)
1. the preparation method of an annular special cambered surface section welding fixture, described annular special cambered surface section welding fixture, corresponding 45 ° of special-shaped cambered surfaces, comprise tire and lower tire, upper tire comprises upper cover plate, end plate one, end plate two, upper pressure cambered surface coaming plate and upper tire location gusset, evenly be arranged between upper cover plate and upper pressure cambered surface coaming plate more than the upper tire location gusset of four pieces along special-shaped cambered surface radial direction, adjacent upper tire location gusset ultimate range is not more than 200mm, and the two ends of upper tire location gusset are respectively equipped with end plate one and end plate two; Described lower tire comprises lower cover, end plate three, end plate four, presses down cambered surface coaming plate and lower tire location gusset, lower tire location gusset is evenly arranged on lower cover along special-shaped cambered surface radial direction and presses down between cambered surface coaming plate, and the two ends of lower tire location gusset are respectively equipped with end plate three and end plate four; It is characterized in that, the preparation method of annular special cambered surface section welding fixture comprises the steps:
1) upper tire location gusset and lower tire positioning bar board size calculate:
Annular special cambered surface section size hot-forming as required determines each piece of upper tire location gusset and lower tire positioning bar board size;
2) thickness of slab correcting process:
Upper tire location gusset and lower tire are located gusset width and are got it at cover plate adjacent with it with press beeline between cambered surface coaming plate, namely play tire to locate gusset width to be as the criterion by centerline side size with thickness of slab, upper tire location gusset width with thickness of slab dorsad centerline side size be as the criterion, make group to tire location gusset upper in process and gusset located by upper cover plate, lower tire and lower cover contact jaw forms nature groove;
3) welding:
First by upper cover plate and end plate two, angle and set of locations install on request, upper cover plate and end plate two are made each on the mark of exact position of tire location gusset, and by centre to both sides successively group gusset is located to each upper tire, then group is to end plate one, adopts and carries out symmetrical welding from centre to the welding sequence of both sides;
By lower cover and end plate three, angle and set of locations install on request, lower cover and end plate three are made the mark of the exact position of each lower tire location gusset, and by centre to both sides successively group gusset is located to each lower tire, then group is to end plate four, adopts and carries out symmetrical welding from centre to the welding sequence of both sides;
4) assembling of up/down pressure cambered surface coaming plate:
Step 3) welding after, get two blocks of 20mm ~ 25mm steel plates conformed to die mould motherboard appearance and size die mould motherboard is clipped in the middle fixes and weld solid, molded together after being heated to 1100 ~ 1150 DEG C, inspection is pressed cambered surface coaming plate and upper tire locate gusset, press down cambered surface coaming plate and lower tire locate gusset fit tight after, respectively upper pressure cambered surface coaming plate and upper tire located gusset, press down cambered surface coaming plate and gusset firm welding located by lower tire, binding face adopts plug welding to fix;
5) make three-dimensional template, control formed precision:
Different directions clean cut edge sweep gauge after adopting 5mm ~ 8mm steel plate Numerical control cutting die mould motherboard shaping, and assembling fixedly is welded into three-dimensional template on die mould motherboard, for accuracy checking after formal die mould and only expect to cut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110259357.8A CN102974687B (en) | 2011-09-03 | 2011-09-03 | A kind of annular special cambered surface section welding fixture and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110259357.8A CN102974687B (en) | 2011-09-03 | 2011-09-03 | A kind of annular special cambered surface section welding fixture and preparation method thereof |
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| CN102974687A CN102974687A (en) | 2013-03-20 |
| CN102974687B true CN102974687B (en) | 2016-03-02 |
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| CN104668317B (en) * | 2015-02-13 | 2016-08-31 | 广西桂冠电力股份有限公司大化水力发电总厂 | The straightening method of water guiding ring and orthotic device thereof in bulb through-flow turbine |
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| DE1452895B2 (en) * | 1965-08-03 | 1976-02-12 | Spetsializirovannoe Ferganskoe Montazhnoe Upravlenie, Fergana (Sowjetunion) | DEVICE FOR PRODUCING TWO-DIMENSIONAL CURVED TIN PANELS |
| CN1689723A (en) * | 2004-04-21 | 2005-11-02 | 渤海船舶重工有限责任公司 | Double curvature plate cold press forming method and equipment thereof |
| CN201253640Y (en) * | 2008-08-20 | 2009-06-10 | 鞍钢重型机械有限责任公司 | Converter-shell varied arc-segment hot compacting positioner |
| CN101653791A (en) * | 2008-08-20 | 2010-02-24 | 鞍钢重型机械有限责任公司 | Converter-shell varied arc-segment hot compacting positioner and positioner manufacturing method |
| CN202239244U (en) * | 2011-09-03 | 2012-05-30 | 鞍钢重型机械有限责任公司 | Annular special cambered surface section welding fixture |
-
2011
- 2011-09-03 CN CN201110259357.8A patent/CN102974687B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1452895B2 (en) * | 1965-08-03 | 1976-02-12 | Spetsializirovannoe Ferganskoe Montazhnoe Upravlenie, Fergana (Sowjetunion) | DEVICE FOR PRODUCING TWO-DIMENSIONAL CURVED TIN PANELS |
| CN1689723A (en) * | 2004-04-21 | 2005-11-02 | 渤海船舶重工有限责任公司 | Double curvature plate cold press forming method and equipment thereof |
| CN201253640Y (en) * | 2008-08-20 | 2009-06-10 | 鞍钢重型机械有限责任公司 | Converter-shell varied arc-segment hot compacting positioner |
| CN101653791A (en) * | 2008-08-20 | 2010-02-24 | 鞍钢重型机械有限责任公司 | Converter-shell varied arc-segment hot compacting positioner and positioner manufacturing method |
| CN202239244U (en) * | 2011-09-03 | 2012-05-30 | 鞍钢重型机械有限责任公司 | Annular special cambered surface section welding fixture |
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