CN104139129A - Multi-point forming technology-applied forming method for curved-surface ship board - Google Patents
Multi-point forming technology-applied forming method for curved-surface ship board Download PDFInfo
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- CN104139129A CN104139129A CN201410320985.6A CN201410320985A CN104139129A CN 104139129 A CN104139129 A CN 104139129A CN 201410320985 A CN201410320985 A CN 201410320985A CN 104139129 A CN104139129 A CN 104139129A
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Abstract
The invention discloses a multi-point forming technology-applied forming method for a curved-surface ship board. The multi-point forming technology-applied forming method comprises the following steps of step 1, determining the target shape, the deformation and the size characteristic of the curved-surface ship board; step 2, selecting optimal curved-surface ship board multi-point forming technologies of the curved-surface ship board according to the target shape, the deformation and the size characteristic of the curved-surface ship board so as to carry out ship board curved surface processing, wherein the optimal curved-surface ship board multi-point forming technologies comprise a ship board multi-point forming composite technology, a ship board multi-point multi-step forming technology and a ship board multi-point sliced forming technology; step 3, carrying out a closed loop forming technology, and carrying out curved surface correction on the curved-surface ship board which is subjected to the optimal curved-surface ship board multi-point forming technologies. According to the multi-point forming technology-applied forming method disclosed by the invention, the forming of ship board curved-surface outer boards in different shapes, different materials and different thicknesses can be realized on one equipment; by using the curved-surface ship board multi-point forming composite technology, the using range of the multi-point forming method is expanded, and the defects which are easily caused during ship board multi-point forming can be reduced or restrained.
Description
Technical field
The invention belongs to Metal Forming field, be specifically related to a kind of curved surface deck of boat forming method of applying multi-point forming.
Background technology
In shipbuilding field, the digitlization of manufacture process is the inexorable trend of shipbuilding industry modernization development.In whole process, the design of boats and ships has realized digitlization, and the processing of machine components also part realizes digitlization, realizes one of digitized difficult point, especially large-scale bent plate part but the moulding of three-dimension curved surface outside plate is plastic working field always.How the steel plate of different-thickness is processed into needed three-dimension curved surface plate, creating qualified fairing is the difficult problem in hull construction.For a long time, for two-dimensional shapes such as cylinders, adopt the mode of roll bending or press-bending to be shaped; And for the complex three-dimensional curved surface part at the hull positions such as warship bow, warship stern, adopt the manual mode of flame forming plate, forming efficiency is low, operating environment is poor, precision cannot guarantee, use die forming mode, one mould, cost is very high, has become one of digitized development bottleneck of hull construction.Along with the fast development of national shipping industry, need to realize quick, flexible, the digitlization moulding of ship hull surface outside plate, the three-dimension curved surface part of be shaped on a kind of equipment different geometries, unlike material, thus accomplish digitlization flexible forming.In recent years, except flame forming plate machine people technology, multi-point forming method becomes one of study hotspot, it turns to compact arranged drift matrix by traditional entity mould is discrete, each drift can be adjusted height under the control of computer, all drifts are adjusted to after needed height, and its end forms needed shaping die face, replace entity mould to carry out punch forming.Multi-point forming technique disclosed patent mainly contains: " non-mould multi-point shaping apparatus for plates " ZL00110773.9, " multi-point formation apparatus for sheet material of Quick shape regulating " ZL02109865.4, " curved surface forming device for adjustable segmented mold board of square rams " ZL200910014794.6.The claim of these patents concentrates on certain implementation of multi-point forming method.And multi-point forming is combined with existing ship hull surface outside plate forming technology, both realized the flexible formation of ship hull surface part, can suppress again the easy wrinkling defect of the deck of boat in multiple spot forming process, the combination technological method that the two advantages is got up has no Patents report.
Summary of the invention
The object of the invention is to give full play to the flexible variable advantage of multiple spot mould, in conjunction with methods such as traditional flame forming plate technique, roll bending formation, bent into shape, measurement of curved surface, solve multiple spot moulding process for defect and the restriction of ship-hull plate forming.By the distinctive process of deck of boat multiple spot moulding, on an equipment, realize the deck of boat surface exterior panel moulding of difformity, different materials, different-thickness; With curved surface deck of boat multiple spot moulding combination process, the scope of application of expansion multiple spot forming method, reduces or suppresses incidental defect in the moulding of deck of boat multiple spot, increase part can machining deformation amount, multiple spot forming technique is pushed to practical.
The object of the invention is to realize by following technical scheme, accompanying drawings is as follows:
A kind of curved surface deck of boat forming method of applying multi-point forming is provided, comprises the following steps:
Before step 1, processing and forming, first determine target shape, deflection and the size characteristics of the curved surface deck of boat 4;
Step 2, according to the target shape of the curved surface deck of boat 4, deflection and size characteristics, select a kind of multiple spot moulding process to carry out deck of boat Machining of Curved Surface, comprising:
Deck of boat multiple spot moulding combination process, it utilizes restructural multiple spot mould, and multiple spot forming technique and conventional ship panel forming method are combined, and realizes the deck of boat 4 curved surface part moulding;
Deck of boat multiple spot is moulding process repeatedly, and it utilizes restructural multiple spot mould, according to the structural strain's amount of the deck of boat 4 target shapes, calculates moulding number of times and each moulding modulus, thereby controls the moulding path of the deck of boat 4, and gradation processing, realizes the deck of boat 4 curved surface formings;
Deck of boat multiple spot burst moulding process, it utilizes the little table top multiple spot mould being comprised of restructural multiple spot mould, forcing press and semi-automatic feeding mechanism, according to the shape and size of the deck of boat 4 target curved surfaces, deck of boat multiple spot burst is carried out to processing and forming, realize the deck of boat 4 curved surface formings;
Step 3, closed loop moulding process, carry out curved surface adjustment to the curved surface deck of boat 4 by after the moulding of step 2 multiple spot moulding process.
As the improvement project of the curved surface deck of boat forming method of the present invention's application multi-point forming, the deck of boat multiple spot moulding combination process in described step 2 comprises following three kinds: curved slab preformed-multiple spot shaping process, the local multiple spot moulding-whole flame forming plate technique in edge and curved slab multiple spot moulding-partial correction technique.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, described curved slab preformed-multiple spot shaping process comprises the following steps: first apply traditional deck of boat roll bending formation method, flame forming plate forming method or progressively bent into shape method deck of boat curved surface part material is carried out to preprocessing, obtain a preformed curve form, apply again multiple spot forming method, adjust restructural multiple spot mould, the deck of boat 4 curved surface parts are carried out molded, to adjust part curve form.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, the local multiple spot moulding-whole flame forming plate technique in described edge comprises the following steps: first apply multiple spot forming method and carry out locally-shaped to the fringe region of the deck of boat 4 curved surface parts, then the zone line of applying the flame forming plate method moulding deck of boat 4 curved surface parts, obtains final part shape.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, described curved slab multiple spot moulding-partial correction technique comprises the following steps: first with the multiple spot forming method processing deck of boat 4 curved surface parts, obtain target curve form, by the deck of boat 4 curved surface parts from restructural multiple spot mould unloading, the local wrinkling deck of boat 4 parts will be had, application press partial plastic forming or vibration hammer manufacturing process carry out the local smoothing in edge, remove wrinkling.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, the restructural multiple spot mould utilizing in deck of boat multiple spot moulding combination process in described step 2 comprises changeable mold 1 and lower changeable mold 3, upper changeable mold 1 and lower changeable mold 3 are separately fixed on the movable beam and lower platform of hydraulic press, upper changeable mold 1 and lower changeable mold 3 have respectively a plurality of adjustable for height drift element bodies 2 arrangements to form, and drift element body 2 is corresponding one by one up and down.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, deck of boat multiple spot in described step 2 repeatedly moulding process comprises the following steps: according to the structural strain's amount of the deck of boat 4 target shapes, before moulding, application multiple spot mould control module, calculates moulding number of times and each moulding digital-to-analogue according to the total deformation of the deck of boat 4 target shapes; After moulding number of times and each moulding digital-to-analogue have been calculated, according to the digital-to-analogue of moulding for the first time, calculate the profile of restructural multiple spot mould, automatically adjust the laggard row of restructural multiple spot mould for the first time to molded; After unloading, according to the digital-to-analogue of moulding for the second time, calculate and adjust restructural multiple spot mould again, carry out, to molded, progressively accumulating part deformation amount, until finish last moulding.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, deck of boat multiple spot burst moulding process in described step 2 comprises the following steps: before the deck of boat 4 multiple spot bursts, application multiple spot mould control module, according to the shape and size of target curved surface, determine the curved surface digital-to-analogue of burst number of times and each minute panel region, and determine the transition region between former and later two bursts in multiple spot burst forming process; After burst has calculated, first according to the digital-to-analogue shape of the first burst, calculate transition region shape, after determining transition region, carry out technology Calculation, obtain the profile for the restructural multiple spot mould of first moulding, by semi-automatic feeding mechanism, the deck of boat is sent into restructural multiple spot mould, under the effect of forcing press, carry out molded; After completing the first burst moulding, the deck of boat 4 is unloaded, semi-automatic feeding mechanism moves forward the deck of boat distance the location of setting; According to the digital-to-analogue of the digital-to-analogue of the second burst and the first burst, again calculate the profile of transition region and restructural multiple spot mould, the second burst moulding is shaped; Successively moulding, knows and finishes last burst moulding, obtains the needed whole curved surface deck of boat 4.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, the little table top multiple spot mould using in deck of boat multiple spot burst moulding process in described step 2, its semi-automatic feeding mechanism comprises material conveying platform 5 and the lifting platform 6 that connects material, the whole height of material conveying platform 5 can be adjusted automatically according to the closing position of restructural multiple spot mould, material conveying platform 5 is provided with the feeding mechanism that AC servo drives, the lifting platform 6 that connects material forms by organizing servo-actuated servo column more, every group of column automatic height adjustment under the driving of sensor.
Improvement project as the curved surface deck of boat forming method of the present invention's application multi-point forming, described step 3 closed loop moulding process comprises the following steps: in conjunction with curved surface fast measurement technique or traditional sample case detection method, after described step 2 moulding finishes, the deck of boat 4 curve forms and target shape are carried out to space curved surface registration, the global error and the error that obtain forming part and target shape distribute; The feature distributing according to error selects a kind of multiple spot moulding process to carry out curved surface adjustment again, until forming part error precision reaches processing request.
Compared with prior art, the present invention has the following advantages:
The present invention's application restructural multiple spot mould is realized the rapid shaping of hyperbolicity ship hull plate, feature for the moulding of deck of boat multiple spot, invented the distinctive process of deck of boat multiple spot moulding, with a set of multiple spot mould not only can moulding difformity, the deck of boat curved surface of different materials, different-thickness, and can expand the plastic part of multiple spot mould size, increase part can machining deformation amount, improve by the precision of forming part; Defect and restriction for multiple spot moulding, auxiliary with traditional deck of boat forming method, curved surface deck of boat multiple spot moulding combination process of the present invention, has expanded the scope of application of multiple spot forming method, reduce or suppress incidental defect in multiple spot moulding, multiple spot forming technique is pushed to practical.The present invention can, for the moulding of ship hull surface outside plate, also can manufacture for pressure vessel, building element etc. the three-dimension curved surface forming parts in field.
Accompanying drawing explanation
Fig. 1 is the process chart of the curved surface deck of boat forming method of the present invention's application multi-point forming.
Fig. 2 is the structural representation of the restructural multiple spot mould that uses of the curved surface deck of boat forming method of the present invention's application multi-point forming.
Fig. 3 is the ship hull surface plate multiple spot burst moulding process equipment schematic diagram that the curved surface deck of boat forming method of the present invention's application multi-point forming is used.
In figure:
1-upper changeable mold, 2-drift element body, 3-lower changeable mold, 4-deck of boat, 5-material conveying platform, 6-lifting platform connects material.
The specific embodiment
Below in conjunction with accompanying drawing illustrated embodiment, further illustrate particular content of the present invention and embodiment.
Consulting Fig. 1 is the process chart of the curved surface deck of boat forming method of the present invention's application multi-point forming, and this method comprises the following steps:
Before step 1, processing and forming, first determine the features such as the curved surface deck of boat 4 target shapes, machining accuracy quality requirement, deflection and size.
Step 2, according to features such as the curved surface deck of boat 4 target shapes, machining accuracy quality requirement, deflection and plate sizes, select a kind of multiple spot moulding process to carry out deck of boat Machining of Curved Surface, comprising:
1. deck of boat multiple spot moulding combination process, it utilizes restructural multiple spot mould, and multiple spot forming technique and conventional ship panel forming method are combined, and realizes the deck of boat 4 curved surface part moulding.
Consult Fig. 1, restructural multiple spot mould comprises changeable mold 1 and lower changeable mold 3, and the die face size of upper changeable mold 1 and lower changeable mold 3 and maximum capable of regulating amount can be according to being designed definite by the requirement of the moulding deck of boat 4 parts.Upper changeable mold 1 and lower changeable mold 3 are separately fixed on the movable beam and lower platform of hydraulic press, replace the traditional mould punching of entity up and down moulding ship hull plate.Upper changeable mold 1 and lower changeable mold 3 have respectively a plurality of adjustable for height drift element bodies 2 arrangements to form, and drift element body 2 is corresponding one by one up and down.What match with restructural multiple spot mould has multiple spot mould control module and a computer control hardware system, multiple spot mould control module can read the digital-to-analogue of curved surface deck of boat part, and can carry out technology Calculation, according to digital-to-analogue shape and plate location situation, automatically calculate the height of all drift element bodies 2 in upper changeable mold 1 and lower changeable mold 3, computer control hardware system is accepted after the result of calculation of multiple spot mould control module, automatically adjust the physical height of all element body drifts 2, form needed die face, under the effect of forcing press, to molded, go out needed ship hull plate curve form, accomplish a tractor serves several purposes, realize the flexibility of deck of boat curved surface, digitlization moulding.
Deck of boat multiple spot moulding combination process specifically comprises following several:
(1) curved slab preformed-multiple spot shaping process: first apply traditional deck of boat roll bending formation method, flame forming plate forming method or progressively bent into shape method the deck of boat 4 curved surface part materials are carried out to preprocessing, obtain a preformed curve form, apply again multiple spot forming method, adjust restructural multiple spot mould, the deck of boat 4 curved surface parts are carried out molded, to adjust part curve form.
Curved slab preformed-multiple spot shaping process is specially for the very large stem ship of deflection stern curved surface part, if such part is difficult to guarantee required precision with traditional forming method, and while applying separately multiple spot moulding because deflection produces greatly large wrinklingly, be difficult to guarantee Forming Quality.Therefore first apply traditional deck of boat roll bending formation method, flame forming plate forming method or progressively bent into shape method carry out preprocessing, obtain a preformed curve form, although variant by the curve form of profiled member and target curved surface, but completed most deflection, just be subject to the restriction of traditional diamond-making technique, cannot guarantee local accuracy, apply again multiple spot formation system, adjusting upper and lower changeable mold carries out molded, accurate adjustment curve form, improves part final molding precision.
(2) the local multiple spot moulding-whole flame forming plate technique in edge comprises the following steps: first apply multiple spot forming method and carry out locally-shaped to the fringe region of the deck of boat 4 curved surface parts, then the zone line of applying the flame forming plate method moulding deck of boat 4 curved surface parts, obtains final part shape.
The local multiple spot moulding-whole flame forming plate technique in edge is for size is very large, global shape is mild but the regional areas such as edge require the high ship hull plate curved surface part of geometric accuracy, this class part is subject to size restrictions, be difficult to carry out moulding with multiple spot mould, and change on the whole mild, be easy to traditional flame forming plate technology moulding, but the edge of part or certain local zonule require that formed precision is high, deflection is large, the curved technology of extreme misery is difficult to realize.For such ship-hull plate forming, there are two kinds of embodiments, the one, other regional area of first applying restructural multiple spot mould burst forming part fringe region or requiring, completes after the moulding of local zonule, edge, then by the conventional method of flame forming plate, the whole deck of boat 4 is carried out to moulding; The 2nd, first need not consider the local shape at edge, water ignition method forming part goes out the main region of part, then with multiple spot mould edge region, carries out piecewise to molded.
(3) panel multiple spot moulding-partial correction technique comprises the following steps: first with multiple spot forming method processing deck of boat curved surface part, obtain target curve form, by the deck of boat 4 curved surface parts from restructural multiple spot mould unloading, the local wrinkling deck of boat 4 parts will be had, application press partial plastic forming or vibration hammer manufacturing process carry out the local smoothing in edge, remove wrinkling.
Curved slab multiple spot moulding-partial correction process is invented for the wrinkling defect of deck of boat multiple spot moulding specially.During the deck of boat 4 cold forming, the wrinkling defect of the large easily generation of deflection, especially in multiple spot moulding, because contacting between changeable mold and plate is a series of point or little face, rather than continuous surface, constraint to plate in to molded process is few, generally at regional areas such as edges, produces wrinkling defect.For such exterior panel, with multiple spot moulding, obtain fast needed target curve form, after unloading, will have the deck of boat 4 parts of local wrinkling defect, the methods such as application press partial plastic forming, vibration hammer shaping are carried out the local smoothing in edge, thereby reach the quality requirement of the deck of boat 4 parts.
2. deck of boat multiple spot moulding process repeatedly, it utilizes restructural multiple spot mould, according to the structural strain's amount of the deck of boat 4 target shapes, calculates moulding number of times and each moulding modulus, thereby controls the moulding path of the deck of boat 4, and gradation processing, realizes the deck of boat 4 curved surface formings.
Deck of boat multiple spot repeatedly moulding process comprises the following steps: according to the structural strain's amount of deck of boat target shape, before moulding, application multiple spot mould control module, calculates moulding number of times and each moulding digital-to-analogue according to the total deformation of the deck of boat 4 target shapes; After moulding number of times and each moulding digital-to-analogue have been calculated, according to the digital-to-analogue of moulding for the first time, calculate the profile of restructural multiple spot mould, automatically adjust the laggard row of restructural multiple spot mould for the first time to molded; After unloading, according to the digital-to-analogue of moulding for the second time, calculate and adjust restructural multiple spot mould again, carry out, to molded, progressively accumulating part deformation amount, until finish last moulding.
Deck of boat multiple spot repeatedly moulding process is identical with the object of curved slab preformed-multiple spot shaping process, is all the deck of boat curved surface of moulding aximal deformation value.This process is applied the quick adjustable feature of restructural multiple spot mould equally, and bulk deformation amount is divided into repeatedly and is carried out, and realizes the zero defect moulding of aximal deformation value ship hull surface plate.Before moulding, multiple spot mould control module is calculated the digital-to-analogue of moulding frequency n and each moulding according to the total deformation of target shape.According to by parameters such as the deformation characteristics of the moulding deck of boat and material, thickness, deflection between each moulding can be divided equally, and deflection that yet can be each is not identical, thereby can control the moulding path of the deck of boat, improve the forming limit of plate, obtain the deck of boat part of aximal deformation value.After moulding frequency n and each moulding digital-to-analogue have been calculated, according to the digital-to-analogue of moulding for the first time, calculate the profile of changeable mold, after automatically adjusting, carry out moulding for the first time.After unloading, again according to the target shape of moulding for the second time, calculate and adjust multiple spot mold shape to molded, progressively accumulate part deformation amount, until reach moulding frequency n.Thereby in the unruffled situation of the deck of boat, obtain the curved slab part of aximal deformation value.
3. deck of boat multiple spot burst moulding process, it utilizes little table top multiple spot mould, according to the shape and size of deck of boat target curved surface, deck of boat multiple spot burst is carried out to processing and forming, realizes deck of boat curved surface forming.
Consult Fig. 3, little table top multiple spot mould is comprised of restructural multiple spot mould, forcing press and semi-automatic feeding mechanism, its semi-automatic feeding structure comprises material conveying platform 5 and the lifting platform 6 that connects material, the whole height of material conveying platform 5 can be adjusted automatically according to the closing position of restructural multiple spot mould, thereby smoothly plate is sent into multiple spot mould.Material conveying platform 5 is provided with the feeding mechanism that AC servo drives, and can under the control of computer, plate be moved forward to fixed displacement, realizes the numerical control of feed distance.The lifting platform 6 that connects material forms by organizing servo-actuated servo column more, every group of column automatic height adjustment under the driving of sensor, thereby the deck of boat 4 that effectively support has been out of shape.
Deck of boat multiple spot burst moulding process comprises the following steps: before the deck of boat 4 multiple spot bursts, application multiple spot mould control module, according to the shape and size of target curved surface, determine the curved surface digital-to-analogue of burst number of times and each minute panel region, and determine the transition region between former and later two bursts in multiple spot burst forming process; After burst has calculated, first according to the digital-to-analogue shape of the first burst, calculate transition region shape, after determining transition region, carry out technology Calculation, obtain the profile for the restructural multiple spot mould of first moulding, by semi-automatic feeding mechanism, the deck of boat is sent into restructural multiple spot mould, under the effect of forcing press, carry out molded; After completing the first burst moulding, the deck of boat 4 is unloaded, semi-automatic feeding mechanism moves forward the deck of boat distance the location of setting; According to the digital-to-analogue of the digital-to-analogue of the second burst and the first burst, again calculate the profile of transition region and restructural multiple spot mould, the second burst moulding is shaped; Successively moulding, knows and finishes last burst moulding, obtains the needed whole curved surface deck of boat.
Deck of boat multiple spot burst moulding process is upper changeable mold 1 and the quick adjustable feature of lower changeable mold 3 of giving full play to restructural multiple spot mould, with little table top multipoint forming die, molding large-sized deck of boat curved surface part, is the distinctive process of deck of boat multiple spot forming technique.Before the deck of boat 4 multiple spot bursts, control software according to the shape and size of target curved surface, determine burst frequency n, and the curved surface digital-to-analogue of each minute panel region.Due in multiple spot burst forming process, between two of front and back, need to have transition region to seamlessly transit, the area of general n time moulding is greater than the real area of plate.After burst has calculated, before moulding for the first time, the deck of boat 4 is flat shapes, and when first moulding, except needing the region of moulding, the easy passive moulding in other region of plate, affects final precision.Therefore first according to the digital-to-analogue shape of first, calculate transition region shape, carry out technology Calculation after determining transition region, obtain for the changeable mold 1 of first moulding and the height of 3 all element body drifts.Under the location and driving of material conveying platform 5, the deck of boat 4 is admitted between changeable mold 1 and lower changeable mold 3, under the effect of forcing press, carries out molded.After unloading, feed mechanism 5 moves forward the deck of boat 4 distance of setting, and locates with the lifting platform 6 that connects material.According to the digital-to-analogue in the digital-to-analogue of second forming area and first region, again calculate the profile of transition region and variable multiple spot mould, adjust the needed multiple spot mold shape of moulding for the second time, Two Areas is shaped.Under rational process planning, through n multizone moulding, in the situation that not cutting apart steel plate, burst molds the three-dimensional bent plate of needed integral body, realizes deck of boat burst multi-point flexibly moulding process.
Step 3, closed loop moulding process, carry out curved surface adjustment to the curved surface deck of boat by after the moulding of step 2 multiple spot moulding process.
Closed loop moulding process comprises the following steps: in conjunction with curved surface fast measurement technique or traditional sample case detection method, after described step 2 moulding finishes, the deck of boat 4 curve forms and target shape are carried out to space curved surface registration, the global error and the error that obtain forming part and target shape distribute; The feature distributing according to error selects multiple spot moulding process to carry out curved surface adjustment again, until forming part error precision reaches processing request.
By curved surface deck of boat multiple spot moulding combination process, the deck of boat multiple spot ship hull surface outside plate that repeatedly moulding process or deck of boat multiple spot burst moulding process obtain, can improve by closed loop moulding technique the formed precision of the deck of boat.It,, in conjunction with curved surface fast measurement technique or traditional sample case detection method, carries out space curved surface registration by the deck of boat 4 curve forms and target shape after moulding finishes, and obtains being distributed by the global error of forming part and target shape and error.The feature distributing according to error again select curved surface deck of boat multiple spot moulding combination technological method that the present invention proposes, deck of boat multiple spot repeatedly moulding process or deck of boat multiple spot burst moulding process carry out curved surface adjustment, improve the deck of boat 4 molded integral precision.This process not only can improve the curved surface deck of boat 4 formed precisions, and can control the springback capacity of the deck of boat 4 moulding.
Claims (10)
1. a curved surface deck of boat forming method of applying multi-point forming, is characterized in that, comprises the following steps:
Before step 1, processing and forming, first determine the curved surface deck of boat (4) target shape, deflection and size characteristics;
Step 2, according to the target shape of the curved surface deck of boat (4), deflection and size characteristics, select a kind of multiple spot moulding process to carry out deck of boat Machining of Curved Surface, comprising:
Deck of boat multiple spot moulding combination process, it utilizes restructural multiple spot mould, and multiple spot forming technique and conventional ship panel forming method are combined, and realizes the deck of boat (4) curved surface part moulding;
Deck of boat multiple spot is moulding process repeatedly, and it utilizes restructural multiple spot mould, according to the structural strain's amount of the deck of boat (4) target shape, calculate moulding number of times and each moulding modulus, thereby control the moulding path of the deck of boat (4), gradation processing, realizes the deck of boat (4) curved surface forming;
Deck of boat multiple spot burst moulding process, it utilizes the little table top multiple spot mould being comprised of restructural multiple spot mould, forcing press and semi-automatic feeding mechanism, according to the shape and size of the deck of boat (4) target curved surface, deck of boat multiple spot burst is carried out to processing and forming, realize the deck of boat (4) curved surface forming;
Step 3, closed loop moulding process, carry out curved surface adjustment to the curved surface deck of boat (4) by after the moulding of step 2 multiple spot moulding process.
2. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 1, it is characterized in that, the deck of boat multiple spot moulding combination process in described step 2 comprises following three kinds: curved slab preformed-multiple spot shaping process, the local multiple spot moulding-whole flame forming plate technique in edge and curved slab multiple spot moulding-partial correction technique.
3. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 2, it is characterized in that, described curved slab preformed-multiple spot shaping process comprises the following steps: first apply traditional deck of boat roll bending formation method, flame forming plate forming method or progressively bent into shape method deck of boat curved surface part material is carried out to preprocessing, obtain a preformed curve form, apply again multiple spot forming method, adjust restructural multiple spot mould, the deck of boat (4) curved surface part is carried out molded, to adjust part curve form.
4. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 2, it is characterized in that, the local multiple spot moulding-whole flame forming plate technique in described edge comprises the following steps: first apply multiple spot forming method and carry out locally-shaped to the fringe region of the deck of boat (4) curved surface part, then the zone line of applying the flame forming plate method moulding deck of boat (4) curved surface part, obtains final part shape.
5. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 2, it is characterized in that, described curved slab multiple spot moulding-partial correction technique comprises the following steps: first with the multiple spot forming method processing deck of boat (4) curved surface part, obtain target curve form, by the deck of boat (4) curved surface part from restructural multiple spot mould unloading, the local wrinkling deck of boat (4) part will be had, application press partial plastic forming or vibration hammer manufacturing process carry out the local smoothing in edge, remove wrinkling.
6. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 1, it is characterized in that, the restructural multiple spot mould utilizing in deck of boat multiple spot moulding combination process in described step 2 comprises changeable mold (1) and lower changeable mold (3), upper changeable mold (1) and lower changeable mold (3) are separately fixed on the movable beam and lower platform of hydraulic press, upper changeable mold (1) and lower changeable mold (3) have respectively a plurality of adjustable for height drift element bodies (2) arrangement to form, and drift element body (2) is corresponding one by one up and down.
7. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 1, it is characterized in that, deck of boat multiple spot in described step 2 repeatedly moulding process comprises the following steps: according to the structural strain's amount of the deck of boat (4) target shape, before moulding, application multiple spot mould control module, calculates moulding number of times and each moulding digital-to-analogue according to the total deformation of the deck of boat (4) target shape; After moulding number of times and each moulding digital-to-analogue have been calculated, according to the digital-to-analogue of moulding for the first time, calculate the profile of restructural multiple spot mould, automatically adjust the laggard row of restructural multiple spot mould for the first time to molded; After unloading, according to the digital-to-analogue of moulding for the second time, calculate and adjust restructural multiple spot mould again, carry out, to molded, progressively accumulating part deformation amount, until finish last moulding.
8. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 1, it is characterized in that, deck of boat multiple spot burst moulding process in described step 2 comprises the following steps: before the deck of boat (4) multiple spot burst, application multiple spot mould control module, according to the shape and size of target curved surface, determine the curved surface digital-to-analogue of burst number of times and each minute panel region, and determine the transition region between former and later two bursts in multiple spot burst forming process; After burst has calculated, first according to the digital-to-analogue shape of the first burst, calculate transition region shape, after determining transition region, carry out technology Calculation, obtain the profile for the restructural multiple spot mould of first moulding, by semi-automatic feeding mechanism, the deck of boat is sent into restructural multiple spot mould, under the effect of forcing press, carry out molded; After completing the first burst moulding, the deck of boat (4) is unloaded, semi-automatic feeding mechanism moves forward the deck of boat distance the location of setting; According to the digital-to-analogue of the digital-to-analogue of the second burst and the first burst, again calculate the profile of transition region and restructural multiple spot mould, the second burst moulding is shaped; Successively moulding, knows and finishes last burst moulding, obtains the needed whole curved surface deck of boat (4).
9. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 1, it is characterized in that, the little table top multiple spot mould using in deck of boat multiple spot burst moulding process in described step 2, its semi-automatic feeding mechanism comprises material conveying platform (5) and the lifting platform that connects material (6), the whole height of material conveying platform (5) can be adjusted automatically according to the closing position of restructural multiple spot mould, material conveying platform (5) is provided with the feeding mechanism that AC servo drives, the lifting platform (6) that connects material forms by organizing servo-actuated servo column more, every group of column automatic height adjustment under the driving of sensor.
10. according to a kind of curved surface deck of boat forming method of applying multi-point forming claimed in claim 1, it is characterized in that, described step 3 closed loop moulding process comprises the following steps: in conjunction with curved surface fast measurement technique or traditional sample case detection method, after described step 2 moulding finishes, the deck of boat (4) curve form and target shape are carried out to space curved surface registration, the global error and the error that obtain forming part and target shape distribute; The feature distributing according to error selects a kind of multiple spot moulding process to carry out curved surface adjustment again, until forming part error precision reaches processing request.
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| CN104998947A (en) * | 2015-07-31 | 2015-10-28 | 燕山大学 | Thick plate space curved face forming method based on multi-point die |
| CN105234239A (en) * | 2015-11-16 | 2016-01-13 | 吉林大学 | Large-curvature three-dimensional hook face multi-step forming method based on gradually-changed mold molded face |
| CN105344782A (en) * | 2015-12-11 | 2016-02-24 | 吉林大学 | Segment-by-segment forming method for large curved surface adopting discrete die |
| CN105458055A (en) * | 2015-04-20 | 2016-04-06 | 荆门宏图特种飞行器制造有限公司 | Compression molding equipment and compression molding method for 9Ni steel ball sealing head |
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| CN112718943A (en) * | 2020-12-14 | 2021-04-30 | 寿县江淮船舶修造有限责任公司 | Metal workpiece bending equipment for ship processing plant |
| CN112828168A (en) * | 2020-12-31 | 2021-05-25 | 鹤壁天淇汽车模具有限公司 | Digital conversion manufacturing method for craftsman skill of magnesium-aluminum alloy automobile covering part die |
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| CN110496899A (en) * | 2019-08-15 | 2019-11-26 | 江南造船(集团)有限责任公司 | The manufacturing process and equipment of plate |
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Application publication date: 20141112 |