CN115848615A - Grid structure for wing rudder and forming process thereof - Google Patents
Grid structure for wing rudder and forming process thereof Download PDFInfo
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- CN115848615A CN115848615A CN202211693766.3A CN202211693766A CN115848615A CN 115848615 A CN115848615 A CN 115848615A CN 202211693766 A CN202211693766 A CN 202211693766A CN 115848615 A CN115848615 A CN 115848615A
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Abstract
The invention relates to a grid structure for a wing rudder and a forming process of the grid structure, belongs to the technical field of welding, and solves the problem that in the prior art, no grid structure suitable for wing rudder products exists, a hollow area cannot be formed, and therefore the wing rudder products cannot be lightened. The grid structure for the wing rudder comprises grid plates and baffles, wherein the baffles are sequentially connected to form a closed loop; the grid plate is inserted in an inner space formed by the baffle plate to form a hollow area, and the end part of the grid plate is fixedly connected with the baffle plate. The invention realizes the light weight of the product in the aerospace field.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a grid structure for a wing rudder and a forming process of the grid structure.
Background
The realization of the light weight of products in the aerospace field is a constant theme, and particularly, in recent years, aerospace aircrafts are increasingly developed, so that the light weight requirement on the main body structure of the aircraft is more urgent.
The wing rudder product is used as an important component of an aerospace craft, the wing rudder product is often required to have the characteristics of impact resistance and high temperature resistance, the weight reduction effect of the product is often achieved by matching the composite effect of a light alloy and a lightweight structure in the field of industrial production, magnesium, aluminum and titanium alloy are used as common structural materials in the existing metal light alloy, and the titanium alloy is widely applied to the field of aerospace due to the excellent high temperature resistance of the titanium alloy.
The wing rudder type part can be designed into a grid structure with a hollow structure in order to realize the light structure of the product. However, in the prior art, no grid structure suitable for wing rudder products exists, and a hollow area cannot be formed, so that the wing rudder products cannot be lightened.
Disclosure of Invention
In view of the above analysis, the present invention is directed to provide a grid structure for a wing rudder and a forming process thereof, so as to solve the problem that no grid structure suitable for wing rudder products exists in the prior art, and a hollow area cannot be formed, so that the wing rudder products cannot be reduced in weight.
The purpose of the invention is mainly realized by the following technical scheme:
on one hand, the invention provides a grid structure for a wing rudder, which comprises a grid plate and baffles, wherein the baffles are sequentially connected to form a closed loop; the grid plate is inserted and connected in an inner space formed by the baffle plate to form a hollow area, and the end part of the grid plate is fixedly connected with the baffle plate.
Optionally, an open slot is formed in the grid plate, and the open slot penetrates through the grid plate in the thickness direction of the grid plate; the depth of the open slot is equal to half of the width of the grid plate; the number of the open grooves is multiple, and the open grooves are arranged along the length direction of the grid plate in a scattered mode.
Optionally, the width of the open slot is greater than the thickness of the grid plate.
Optionally, the end of the grid plate comprises a flat end and a bevel end; the flat end refers to the end face of the grid plate being perpendicular to the main body of the grid plate, and the groove end refers to the end face of the grid plate forming a certain angle with the main body of the grid plate.
Optionally, one end of the grid plate is a flat end, and the other end of the grid plate is a beveled end.
Optionally, both ends of the grid plate are beveled ends.
Optionally, the grid plate is made of an aluminum alloy or a titanium alloy.
Optionally, the length of the grid plate is 800-1000mm.
Optionally, the grid plate has a width of 90-100mm.
On the other hand, the invention also provides a grid plate processing method, which is used for processing and obtaining the grid plate and comprises the following steps:
step 1: cutting to obtain a grid plate with a preset size;
and 2, step: cutting open grooves at certain intervals on the grid plate;
and 3, step 3: and processing the end of the grid plate.
In addition, the invention also provides a grid structure forming process for forming the grid structure, which comprises the following steps:
a, step a: trial assembling the grid plate and the baffle plate by adopting an assembling tool;
step b: acid washing;
step c: and welding to obtain the grid structure.
The assembling tool is used for assisting in assembling a plurality of grid plates together and comprises a frame; a hollow-out area is arranged on the frame to achieve the purpose of reducing weight; the grid plate is characterized in that the hollowed-out area comprises a plurality of hollowed-out units, gaps are formed between every two adjacent hollowed-out units, and the gaps are communicated to form a clamping groove so as to place the grid plate.
Optionally, the card slot includes a first card slot and a second card slot, the first card slot and the second card slot are arranged in an intersecting manner, and an opening slot is formed in the intersection of the first card slot and the second card slot.
Optionally, the number of the first card slots and the number of the second card slots are multiple, and the multiple first card slots and the multiple second card slots are all arranged in parallel.
Optionally, the width of the slot is greater than the thickness of the grid plate.
Optionally, the width of the slot is 0.1-0.2mm greater than the thickness of the grid plate.
Optionally, the hollow unit comprises four vertical plates, and the vertical plates are sequentially connected to form a hollow cuboid.
Optionally, the height of the vertical plate is half of the width of the grid plate.
Optionally, the cross section of the hollowed-out unit is in a cross shape.
Optionally, a limiting block is arranged on the frame and is arranged outside the hollow area.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
(1) The grid plate has the characteristics of deep cavities (the width of the grid plate is 90-100 mm), large size (the length of the grid plate is 800-1000 mm) and thin wall (the thickness of the grid plate is less than 5 mm), and the grid plate is provided with the open slots, so that the grid plates can be interconnected by controlling the sizes of the open slots, a hollow structure is formed, and the light weight of the wing rudder is realized.
(2) The special assembly tool is arranged aiming at the structure of the grid plate, can play a role in constraining in the grid plate assembly process, can effectively reduce welding deformation in the subsequent welding process, and creates good conditions for subsequent assembly and final guarantee of the dimensional accuracy of the whole grid wing.
(3) The grid plate has the particularity of deep cavities (the width of the grid plate is 90-100 mm), large size (the length of the grid plate is 800-1000 mm), thin wall (the thickness of the grid plate is less than 5 mm) and more welding seams (dozens of welding seams or even hundreds of welding seams), so the grid plate has the technical problems of large welding deformation and low product size precision. Through technical innovation, the specific welding sequence of firstly welding the central welding line and then welding the peripheral welding lines and the welding sequence of firstly welding the two welding lines in the centrosymmetric position in each group of peripheral welding lines are adopted in the full welding of the grid plate, so that the welding deformation can be effectively prevented, the subsequent assembly is convenient, the dimensional precision of the whole grid wing can be ensured, and the product percent of pass is high. The forming process flow of the invention is simple and short, is easy to implement and does not need special forming equipment.
(4) According to the grid plate inserting device, the height of the vertical plate in the hollow unit is set to be half of the width of the grid plate, so that the grid plate can be stabilized, and the inserting connection of the grid plate cannot be influenced due to too high height of the vertical plate.
(5) According to the grid plate, the upward reinforcing protrusions are arranged on the upper surface of the vertical plate, and the length of the reinforcing protrusions is smaller than that of the vertical plate, so that the grid plate can be enhanced in stability, the material consumption of the vertical plate can be reduced, and the cost is saved.
(6) According to the invention, the sum of the height of the reinforcing protrusion and the height of the vertical plate is controlled to be one half to two thirds of the width of the grid plate, so that the stability of the grid plate is further improved, and the insertion of the grid plate is not influenced.
(7) According to the invention, the shape of the internal space defined by the baffles can be better maintained by arranging the limiting blocks, and the structural stability of the hollow area is kept, so that the dimensional accuracy of the grid plate is ensured.
(8) According to the invention, the limiting blocks are arranged and the four vertical plates of the hollow-out units are sequentially connected to form a cuboid shape, so that a constraint effect can be achieved in an annealing process, and the dimensional accuracy of the annealed grid plate is well controlled.
(9) The bosses are arranged on the baffle plate and at the crossed welding positions of the grid plate and the baffle plate, so that the grid plate and the baffle plate can be smoothly butted, the interference between the end surface of the grid plate and the baffle plate can be avoided, and the grid plate and the baffle plate are convenient to assemble and weld.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic view of a grid plate structure according to the present invention;
FIG. 2 (a) is a schematic structural diagram of a grid plate of the present invention with a flat end at one end and a beveled end at the other end;
FIG. 2 (b) is a schematic structural view of the grid plate of the present invention with both ends being beveled ends;
FIG. 3 is a schematic structural view of an assembly fixture according to the present invention;
FIG. 4 is a sequence diagram of a full weld of the present invention;
FIG. 5 (a) is a form of joint of the grid plate and the baffle plate of the present invention;
FIG. 5 (b) shows another form of joint between the grid plate and the baffle plate according to the present invention;
FIG. 6 is a schematic structural view of a boss on the baffle plate according to the present invention;
fig. 7 is a schematic structural view of another form of the hollow-out area of the assembly fixture of the present invention.
Reference numerals:
1-a grid plate; 2-a baffle plate; 3-a frame; 4-standing the plate; 5-reinforcing the protrusion; 6-open slot; 7-a connecting part; 8-a support; 9-boss; 10-a limiting block; 11-a first weld; 12-a second weld; 13-third weld; 14-a fourth weld; 15-fifth weld; 16-a sixth weld; 17-a seventh weld; 18-eighth weld; 19-ninth weld; 20-tenth weld; 21-eleventh weld; 22-twelfth weld; 23-a thirteenth weld; 24-fourteenth weldSewing; 25-a fifteenth weld; 26-sixteenth weld; 27-a seventeenth weld; z-laser welding direction; h 1 -the depth of the open slots; h 2 -the width of the grid plate; w-width of open slot; the angle alpha-is.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
Example one
The invention discloses a grid structure for a wing rudder, which is used for forming a grid wing rudder and realizes the light weight of products in the field of aerospace.
The grid structure comprises a plurality of baffles 2 and a plurality of grid plates 1, wherein the baffles 2 are sequentially connected to form a closed loop; a plurality of grid plates 1 are inserted and connected in an inner space formed by the baffle plate to form a hollow area, and the end parts of the grid plates are welded with the baffle plate.
As shown in FIG. 1, the grid plate 1 of the present embodiment has the characteristics of deep cavity (the width of the grid plate is 90-100 mm), large size (the length of the grid plate is 800-1000 mm), and thin wall (the thickness of the grid plate is less than 5 mm). The grid plate 1 is a flaky cuboid, and a plurality of open grooves 6 are dispersedly formed in the grid plate 1 along the length direction of the grid plate 1. The opening groove 6 penetrates along the thickness direction of the grid plate 1, and the depth H of the opening groove 6 1 Equal to the width H of the grid plate 2 Half way, the width W of the open slot 6 is equal to the thickness of the grid plate 1.
Specifically, the grid plate 1 is made of aluminum alloy or titanium alloy, the length is 800-1000mm, and the width is 90-100mm.
To facilitate subsequent assembly, the ends of the grid plate 1 comprise various forms. As shown in fig. 2, the ends of the grid plate 1 include flat ends and beveled ends. The flat end refers to the end face of the grid plate 1 being perpendicular to the main body of the grid plate 1, and the groove end refers to the end face of the grid plate 1 forming a certain angle alpha with the main body of the grid plate 1. The value of α is greater than 90 °, for example 135 °.
Specifically, as shown in fig. 2 (a) and 2 (b), the grid plate 1 may have a flat end at one end and a beveled end at the other end; or both ends can be bevel ends.
In a preferred embodiment, in order to facilitate welding and prevent stress concentration, bosses 9 are arranged on the baffle plate and at the intersection welding positions of the grid plate and the baffle plate, so that smooth butt joint of the grid plate and the baffle plate can be realized, interference between the end face of the grid plate and the baffle plate can be avoided, and assembly welding is facilitated.
In addition, as shown in fig. 3, a connecting portion 7 is provided on one of the baffles in the width direction of the lattice structure to connect the lattice structure to the aircraft.
Specifically, the number of the connecting portions 7 is two, and the connecting portions are respectively provided at both ends of the baffle 2.
Example two
The invention discloses an assembly tool, which is used for assisting in assembling to obtain a grid structure of the first embodiment.
As shown in fig. 3, the assembly fixture of the present embodiment includes a frame 3. The frame 3 is provided with a hollow area to achieve the purpose of reducing weight. The hollow-out area comprises a plurality of hollow-out units, and a gap (not shown in the figure) is arranged between every two adjacent hollow-out units. The gaps are communicated along the length direction of the grid plate 1 to form a clamping groove (not shown) for placing the grid plate 1.
In a preferred embodiment, the width of the pockets is greater than the thickness of the grid plate 1. Specifically, the width of the card slot is 0.1-0.2mm larger than the thickness of the grid plate 1, so that the grid plate 1 can be smoothly inserted into the card slot.
In a possible embodiment, the card slots include a plurality of first card slots and a plurality of second card slots, the plurality of first card slots are arranged in parallel, and the plurality of second card slots are also arranged in parallel. The first clamping grooves and the second clamping grooves are arranged in a crossed mode, and the crossed position is the position where the grid plate 1 is provided with an open groove 6.
Specifically, the fretwork unit includes four risers 4, and four risers 4 connect gradually and form hollow cuboid. Each vertical plate 4 has a certain height, so that the stability of the grid plate 1 standing between the adjacent hollowed-out units is enhanced.
Considering that the vertical plate 4 is too short to stabilize the grid plate 1 well, too high is not beneficial to placing the grid plate 1 with the upward opening in the clamping groove of the assembly tool, and is also not beneficial to inserting the grid plate 1 with the downward opening and the grid plate 1 with the upward opening. In a preferred embodiment, the height of the vertical plate 4 is half the width of the grid plate 1. In the embodiment, the height of the vertical plate 4 is controlled, so that the effect of stabilizing the grid plate 1 can be achieved, and the plugging of the grid plate 1 cannot be influenced due to too high height of the vertical plate 4.
Further, the upper surface of each vertical plate 4 is provided with an upward reinforcing protrusion 5, so that the stability of the grid plate 1 standing between the adjacent tool units is further enhanced. Specifically, the length of the reinforcing protrusion 5 is smaller than that of the vertical plate 4, and the width of the reinforcing protrusion 5 is equal to that of the vertical plate. This embodiment sets up ascending arch through the upper surface at the riser to through setting up protruding length for being less than the length of riser, can enough play the effect of reinforcing grid plate stability, can reduce the quantity of riser material again, save the cost.
Specifically, the sum of the height of the reinforcing protrusion and the height of the vertical plate is one half to two thirds of the width of the grid plate. In the embodiment, the sum of the height of the protrusion and the height of the vertical plate is controlled to be one half to two thirds of the width of the grid plate, so that the stability of the grid plate is further improved, and the plugging of the grid plate is not influenced. Illustratively, the material of riser is cast iron.
In addition, the number of the reinforcing protrusions 5 on each vertical plate 4 is more than one, so that when the distance between the adjacent open grooves 6 on the grid plate is larger, the stability of the grid plate 1 can be still maintained after the grid plate is placed on an assembling tool.
In another specific embodiment, as shown in fig. 3, the frame 3 is provided with a support portion 8 to support the connection portion 7 in the lattice structure.
In addition, as shown in fig. 3, still be equipped with stopper 10 on the frame 3, the outside in fretwork region is located to stopper 10 for it is spacing with baffle 2, can maintain the shape of the inner space that baffle 2 encloses better, keep the structural stability in fretwork region, thereby guarantee the dimensional accuracy of grid plate.
EXAMPLE III
Another embodiment of the present invention also discloses an assembly fixture, as shown in fig. 7, the assembly fixture is different from the assembly fixture of the second embodiment in that: the cross section of the hollow unit in this embodiment is in a cross shape, gaps (not shown in the figure) are respectively arranged between the four protruding parts in the cross shape and the protruding parts of the adjacent hollow units, and the gaps are communicated along the length direction of the grid plate 1 to form clamping grooves (not shown in the figure) for placing the grid plate 1.
Considering that the height of the hollowed-out unit is too short, the grid plate 1 cannot be well stabilized, the height is too high, the grid plate 1 with the upward opening is not favorable to being arranged in a clamping groove of an assembly tool, and the grid plate 1 with the downward opening is not favorable to being plugged with the grid plate 1 with the upward opening. In a preferred embodiment, the height of the engraved elements is between one half and two thirds of the width of the grid plate 1. The height of the hollowed-out unit is set to be one half to two thirds of the width of the grid plate, so that the grid plate stabilizing effect can be achieved, and the grid plate cannot be inserted due to too high height of the tooling unit.
Example four
The invention discloses a forming process of a grid structure for a wing rudder.
The grid plate for the wing rudder usually belongs to thin-wall parts (the thickness is less than 5 mm), if the integral casting forming mode is adopted, the forming is difficult, and the subsequent integral machining of a blank is needed, the problem of high manufacturing cost and long period is easily caused by the long production flow, while the local material can be obtained by adopting the metal plate splicing welding mode, and the grid plate has the advantages of short process preparation period and low cost, but because the product needs the light weight, the thickness of the grid plate is usually less than 5mm, the integral grid has the risks of large welding seam quantity and large welding deformation in the welding process.
Compared with the traditional welding technology, the laser welding belongs to non-contact welding, does not need pressurization in the operation process, has the advantages of high welding speed, high beam density, high strength, large depth-width ratio of a welding seam, small heat affected zone, small deformation of a workpiece, small subsequent treatment workload, high degree of freedom and high operability, and is very applicable to the crisscross grid rudder by adopting a laser welding mode.
The forming process of the present embodiment includes the steps of:
step 1: the grid plate 1 of the first embodiment is obtained by processing, and the processing method comprises the following steps:
step 11: the grid plate 1 with specific dimensions is obtained by laser cutting.
Step 12: cutting an opening groove 6 on the grid plate 1 at certain intervals, wherein the opening groove 6 penetrates through the thickness direction of the grid plate, and the depth H of the opening groove 1 Equal to the width H of the grid plate 2 And the width W of the open slots 6 is equal to the thickness of the grid plate.
It is emphasized that the width accuracy of the open slots will directly affect the assembly accuracy of the grid plate. In a specific embodiment, the precision tolerance of the thickness direction of the grid plate is controlled to be 0.1-0.2mm, so that the grid plate is not easy to deform after being assembled and has high assembly precision.
Step 13: and processing the end of the grid plate.
The end of the grid plate 1 needs to be processed into different forms according to different forms of joints at the assembling positions of the grid plate 1 and the baffle plate 3. There are two main forms: one type is that one end of the grid plate is a flat head, and the other end is a bevel with an angle; in another form, both ends are beveled at an angle. The end of the grid plate is machined into a specific form, so that the grid plate and the baffle plate can be assembled and welded conveniently.
Illustratively, the angle of the bevel is 135 °, i.e. the diagonal edge of the grid plate is 135 ° from the straight edge.
Step 2: the grid plate and the baffle plate are trial assembled to ensure that they do not interfere with each other. Step 21: inserting the grid plate with the upward opening into a clamping groove of an assembly tool, wherein the bottom of an opening groove of the grid plate is required to be flush with the upper surface of the hollowed-out unit during insertion;
step 22: and (3) taking the other grid plate, placing the other grid plate with a downward opening, matching with the grid plate in the step (21), enabling the two grid plates to be level and not to protrude after being spliced, and assembling the grid plates according to an assembling sequence from the middle to the two sides during assembling so as to ensure that no residual stress is generated after assembling.
Step 23: and grinding and repairing a grid plate in contact with the baffle plate to ensure that the butt joint gap between the grid plate with the groove and the vertical plate is not more than 0.1mm and the local part is not more than 0.2mm, and then grinding and repairing another right-angle side to ensure that the right-angle side is well attached to the baffle plate.
And step 3: and (6) acid washing.
And after confirming that all the parts do not interfere with each other, removing the grid plate from the baffle plate, and carrying out acid washing on the grid plate and the baffle plate to remove oil stains and oxide scales on the surface.
And 4, step 4: tack welding
Before welding the grid plate, argon arc welding is adopted to respectively position the cross grids of the splicing seams of the middle grid plate and the contact part of the grid plate and the vertical plate. Therefore, the relative positions of all parts are fixed before welding, the integral rigidity of the integral structure before welding is greatly increased, and the local deformation and deflection of the middle grid plates and the vertical plates during welding can be effectively controlled.
Argon gas is adopted for protection during positioning welding, and the welding gun lags behind the gas stopping time for 18s, so that the front side of the welding line is guaranteed to be silvery white or faint yellow, and dark blue is not allowed.
And 5: welding grid plate
The process comprises the steps of carrying out full welding on the grid plate which is subjected to the positioning welding in the previous step, wherein the full welding adopts laser welding, a tool clamp is adopted to fix the grid plate on a welding tool during welding, the deflection angle of a welding joint of the laser welding is 45 degrees, arc starting welding is started at a position which is lower than a half of the grid plate until a whole welding seam is welded, and the welding is carried out according to a specific sequence of firstly carrying out a central welding seam and then carrying out a peripheral welding seam. The embodiment adopts the specific welding sequence, and can effectively prevent welding deformation.
Specifically, according to the sequence of the distance from the central welding line from the near to the far, the peripheral welding lines comprise a first group of peripheral welding lines, a second group of peripheral welding lines, a third group of peripheral welding lines, and the like.
As shown in fig. 4, the center weld comprises a first weld 11 and the first set of perimeter welds comprises a second weld, 12, a third weld 13, a fourth weld 14, and a fifth weld 15. And the second weld joint 12 and the third weld joint 13, and the fourth weld joint 14 and the fifth weld joint 15 are respectively arranged in central symmetry about the central weld joint.
The second group of peripheral welds includes a sixth weld 16, a seventh weld 17, an eighth weld 18, and a ninth weld 19, and the sixth weld 16 and the seventh weld 17, and the eighth weld 18 and the ninth weld 19 are respectively arranged in central symmetry with respect to the central weld.
The third group of peripheral welding seams comprises a tenth welding seam 20, an eleventh welding seam 21, a twelfth welding seam 22, a thirteenth welding seam 23, a fourteenth welding seam 24, a fifteenth welding seam 25, a sixteenth welding seam 26 and a seventeenth welding seam 27, wherein the tenth welding seam 20 and the eleventh welding seam 21, the twelfth welding seam 22 and the thirteenth welding seam 23, the fourteenth welding seam 24 and the fifteenth welding seam 25, and the sixteenth welding seam 26 and the seventeenth welding seam 27 are respectively arranged in central symmetry around the central welding seam.
In the welding process, a first welding seam 1 in the center position is welded firstly, and then a first group of peripheral welding seams, a second group of peripheral welding seams and a third group of peripheral welding seams are welded in sequence.
Specifically, in the process of welding each group of peripheral weld seams, after the first weld seam in the group of peripheral weld seams is welded, the weld seams in the positions which are centrosymmetric to the weld seams are welded. And then welding the other two welding seams in the centrosymmetric position.
Referring to fig. 4, a first set of peripheral welds is used as an example to describe welding a first weld 1 followed by welding any of a second weld 2, a third weld 3, a fourth weld 4 and a fifth weld 5. If the fourth weld seam 4 is selected to be welded first, a fifth weld seam 5 is subsequently welded, which is symmetrical with respect to the fourth weld seam 4. And then welding the second welding seam 2 and the third welding seam 3 in sequence, or welding the third welding seam 3 first and then welding the second welding seam 2.
The welding sequence of the other sets of perimeter welds is similar to the welding sequence of the first set of perimeter welds and is not described in detail herein.
The specific welding sequence of the central welding line and the peripheral welding line is adopted, and the welding sequence of the two welding lines in the centrosymmetric position is adopted for welding in each group of peripheral welding lines, so that the welding deformation can be effectively prevented, the subsequent assembly is facilitated, and the precision creation of the size of the whole grid wing can be ensured.
And 6: annealing heat treatment
Due to the fact that the number of welding seams is large, heat input is large, mutual constraint action among a plurality of grids is large after laser welding, torsion among grid plates is large, and welding of the grid plates and the baffle plates is affected subsequently.
Therefore, in a preferred embodiment, the grid plate which is fully welded and the assembly tool are annealed together, welding stress is eliminated, and meanwhile, due to the constraint action of the limiting block and the clamping groove of the assembly tool, the dimensional accuracy of the grid plate after annealing is well controlled.
And 7: welding grid plate and baffle
As shown in fig. 5, there are two types of grid plate and baffle welded joint forms, respectively, an intersection welded joint (fig. 5 (a)) and a one-side welded joint (fig. 5 (b)). During welding, welding is performed according to the laser welding direction Z shown in fig. 5.
As shown in fig. 5, in order to facilitate welding and prevent stress concentration, bosses need to be integrally formed at the intersection welding positions of the grid plate and the baffle plate in advance, so that smooth butt joint of the grid plate and the baffle plate can be realized, interference between the end face of the grid plate and the baffle plate can be avoided, and assembly and welding are facilitated. As shown in fig. 6, the welded joint of the grid plate and the baffle plate is designed to be in an equal-sized butt joint form. The width of the boss is 2a x a, the thickness of the grid plate is
)。
And 8: detecting weld quality
The method is limited by the limitation of the deep cavity grid structure, the welding seam quality cannot be effectively detected by the common X-ray, ultrasonic and other modes, and the welding quality can be determined by using a furnace test piece detection mode. And the phased array ultrasonic detection technology can be selected for detecting the quality of the welding seam for the welded product.
The invention provides a control and process method capable of remarkably reducing the laser welding deformation of a deep-cavity crossed grid wing rudder.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The grid structure for the wing rudder is characterized by comprising grid plates and baffles, wherein the baffles are sequentially connected to form a closed loop;
the grid plate is inserted and connected in an inner space formed by the baffle plate to form a hollow area, and the end part of the grid plate is fixedly connected with the baffle plate.
2. The grid structure according to claim 1, wherein the grid plate is provided with open slots, and the open slots penetrate through the grid plate in the thickness direction of the grid plate;
the depth of the open slot is equal to half of the width of the grid plate;
the number of the open grooves is multiple, and the open grooves are arranged in a scattered mode along the length direction of the grid plate.
3. The grid structure of claim 2, wherein the width of the open slots is greater than the thickness of the grid plate.
4. The grid construction of claim 3, wherein the grid plate ends include flat end and beveled end;
the flat end refers to the end face of the grid plate being perpendicular to the main body of the grid plate, and the groove end refers to the end face of the grid plate forming a certain angle with the main body of the grid plate.
5. The lattice structures of claim 4, wherein one end of the lattice plates is a flat end and the other end is a beveled end.
6. The lattice structures of claim 4, wherein both ends of the lattice plates are beveled ends.
7. The grid structure according to claim 2, wherein the grid plate is made of aluminum alloy or titanium alloy.
8. The grid structure of claim 2, wherein the grid plate has a length of 800-1000mm.
9. The grid structure of claim 8, wherein the width of the grid plate is 90-100mm.
10. A process for forming a lattice structure, for forming a lattice structure according to any one of claims 1 to 9, comprising the steps of:
step a: trial assembling the grid plate and the baffle plate by adopting an assembling tool;
step b: acid washing;
step c: and welding to obtain the grid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211693766.3A CN115848615A (en) | 2022-12-28 | 2022-12-28 | Grid structure for wing rudder and forming process thereof |
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| CN202211693766.3A CN115848615A (en) | 2022-12-28 | 2022-12-28 | Grid structure for wing rudder and forming process thereof |
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| CN115848615A true CN115848615A (en) | 2023-03-28 |
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| CN202211693766.3A Pending CN115848615A (en) | 2022-12-28 | 2022-12-28 | Grid structure for wing rudder and forming process thereof |
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| CN (1) | CN115848615A (en) |
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2022
- 2022-12-28 CN CN202211693766.3A patent/CN115848615A/en active Pending
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