CN115090750B - Shot-peening pre-bending tool for high-strength discontinuous wall plate and forming method using same - Google Patents
Shot-peening pre-bending tool for high-strength discontinuous wall plate and forming method using same Download PDFInfo
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- CN115090750B CN115090750B CN202210827855.6A CN202210827855A CN115090750B CN 115090750 B CN115090750 B CN 115090750B CN 202210827855 A CN202210827855 A CN 202210827855A CN 115090750 B CN115090750 B CN 115090750B
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- 238000005452 bending Methods 0.000 title claims abstract description 125
- 238000005480 shot peening Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000000903 blocking effect Effects 0.000 claims abstract description 43
- 238000005422 blasting Methods 0.000 claims abstract description 42
- 210000003205 muscle Anatomy 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
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- 238000010923 batch production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical compound C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/06—Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating, peen forming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a shot-peening pre-bending tool for a high-strength discontinuous wallboard and a forming method using the same, comprising the following steps: the force blocking strip is arranged on one side of the outer surface of the skin, and the outer surface of the skin is in contact with the force blocking strip; the top force strips are at least provided with two, are arranged on one side of the inner surface of the skin, are respectively arranged on two sides of a high-rib discontinuous area of the high rib, are connected with adjusting rods, the other ends of the length directions of the adjusting rods extend and are abutted to the inner surface of the skin, and the length of the adjusting rods is adjustable; and the spring baffle is arranged on the inner surface side of the skin. The method can greatly improve the pre-bending deformation uniformity of the high-reinforcement discontinuous region of the high-reinforcement discontinuous wall plate, thereby improving the precision and the surface quality of the part in the follow-up shot blasting forming.
Description
Technical Field
The invention relates to the technical field of material shot-peening, in particular to a shot-peening pre-bending tool for a high-strength discontinuous wallboard and a shaping method using the same.
Background
The shot blasting forming technology is a forming method which utilizes high-speed shot flow to impact the surface of a metal plate material, so that the impacted surface and the metal material below the impacted surface are plastically deformed and extended, and the plate material is gradually bent and deformed to be protruded towards the sprayed surface so as to achieve the required shape. The technology began in the early fifties of the twentieth century and developed with the widespread use of aircraft monolithic panel parts. The forming method is flexible and various, is very suitable for small-batch production, and is widely applied to the forming of the integral wall plates of wings, fuselages, carrier rocket fuel tanks and the like of an airplane because a special die and a press are not needed in the forming process. Shot peening is currently a major method of forming the integral panels of modern aircraft, particularly large aircraft.
Along with the technical development of shot-peening, pre-stress shot-peening is gradually promoted, and pre-stress shot-peening is a shot-peening method for forming elastic strain by applying a load to a part plate blank in advance by means of a pre-stress clamp before shot-peening and then shaping the part plate blank. Under the condition of the same shot strength and coverage rate, the forming limit of the prestressed shot blasting is 2-3 times of that of the free shot blasting, meanwhile, the prestressed shot blasting can also effectively control the additional bending deformation along the direction of the shot blasting route, and the technology can solve the shot blasting forming requirement of the part with complex shape curvature, thereby further promoting the development of the shot blasting forming technology.
Along with the improvement of the mobility, durability and fuel economy requirements of the novel advanced aircraft, the whole ribbed wallboard structure is more and more complex, the local pneumatic profile curvature is increased, and the bending deformation of the wallboard along the rib direction is increased, so that the manufacturing difficulty is increased. In addition, in the main bearing part butt joint area of the aircraft, the high-strength frame structural part is connected with the inner surface of the high-strength wallboard through rivets, and the curvature radius direction of the frame is perpendicular to the length direction of the ribs of the high-strength wallboard. In order to ensure that the frame parts which bear large loads respectively do not generate structural damage, the ribs of the high-rib wallboard are required to be broken into an area, so that the high-strength connection of the two parts is ensured.
When pre-bending is applied to the large-deformation high-rib discontinuous rib integral wallboard, the rigidity constraint of the ribs and the skin is inconsistent, so that the pre-bending curved surface is suddenly changed, and the shot blasting forming precision and the surface quality of the part are affected. Therefore, the shot blasting forming technology breaking through the large-deformation high-rib discontinuous wallboard becomes the key of successful manufacture of the novel large-size ribbed wallboard of the aircraft.
Disclosure of Invention
(1) Technical problem to be solved
The first aspect of the embodiment of the invention provides a shot-peening pre-bending tool for a high-strength discontinuous wall plate, which comprises the following steps: force blocking strips, force pushing strips, spring baffles and the like. The embodiment of the invention can greatly improve the pre-bending deformation uniformity of the high-reinforcement discontinuous region of the high-reinforcement discontinuous wall plate, thereby improving the precision and the surface quality of the part in the subsequent shot blasting forming.
According to the embodiment of the invention, the shot peening pre-bending tool is used for pre-bending the high-rib discontinuous area of the high-rib discontinuous wall plate and then shot peening is carried out. The embodiment of the invention can greatly improve the pre-bending deformation uniformity of the high-reinforcement discontinuous region of the high-reinforcement discontinuous wall plate, thereby improving the precision and the surface quality of the part in the subsequent shot blasting forming.
(2) Technical proposal
An embodiment of the present invention provides a high-strength discontinuous wall panel shot-peening pre-bending tool, the high-strength discontinuous wall panel including: high rib and skin, the skin includes internal surface and surface, high rib connects the skin interior surface one side, just high rib is equipped with high rib discontinuous region at length direction, its characterized in that, shot-blasting shaping preflex frock includes:
the force blocking strip is arranged on one side of the outer surface of the skin, and the outer surface of the skin is in contact with the force blocking strip;
the top force strips are at least provided with two, are arranged on one side of the inner surface of the skin, are respectively arranged on two sides of a high-rib discontinuous area of the high rib, are connected with adjusting rods, the other ends of the length directions of the adjusting rods extend and are abutted to the inner surface of the skin, and the length of the adjusting rods is adjustable;
the spring baffle is arranged on the inner surface side of the skin, two ends of the spring baffle are respectively connected to the top force strips on two sides of the high-rib discontinuous area, a sliding top block is arranged in the high-rib discontinuous area of the high-rib, the sliding top block is connected with the spring baffle through a spring, and the spring baffle is used for driving the sliding top block to be in contact with the high-rib discontinuous area through the spring.
Further, the number of the force blocking strips is not less than two, the force blocking strips are respectively arranged on two sides of the high-strength discontinuous area, and a certain position is fixedly arranged on the force blocking strips.
Further, the shot peening tooling further comprises: the rib clamping blocks are connected to one side of the high rib, which is located in the high rib discontinuous area.
Further, the side end face of the sliding top block and the side end face of the rib clamping block can slide relatively.
Further, the rib clamping block is connected with the ribs through clamping screws.
Further, the shot peening tooling further comprises: the rib jacking block is connected to one side of the skin, located on the inner surface, of the skin, and the other end of the adjusting rod in the length direction abuts against the end face of the rib jacking block.
Further, the adjusting rod is a threaded rod, a threaded hole is formed in the top force bar, and the adjusting rod penetrates through the threaded hole and is connected with the threaded hole in a threaded mode.
Further, the top force bar, the force blocking bar and the rib top block are all perpendicular to the high ribs.
The second aspect of the embodiment of the invention provides a method for performing shot peening forming on a high-strength discontinuous wall plate by using the shot peening forming pre-bending tool for the high-strength discontinuous wall plate according to any one of the first aspect of the embodiment of the invention, which comprises the following steps:
step one: the high-strength discontinuous area of the high-strength discontinuous wall plate is subjected to pre-bending treatment by adopting the shot blasting forming pre-bending tool of the high-strength discontinuous wall plate according to any one of the first aspect of the embodiment of the invention;
step two: and (3) performing shot blasting forming on the outer surface of the wallboard, and unloading the shot blasting forming tool after shot blasting is finished.
Further, the application method of the shot-peening forming pre-bending tool comprises the following steps:
step one: mounting the high-strength discontinuous wall panel to the shot forming pre-bending tooling by using the shot forming pre-bending tooling for the high-strength discontinuous wall panel according to any one of claims 1-8, wherein the top width La, la= (45% -60%) of the sliding top block is L, wherein L is the length of the high-strength discontinuous region of the wall panel;
step two: applying a tightening force to the adjusting rod, adjusting the displacement of the adjusting rod to enable the adjusting rod to be in contact with the inner surface of the panel skin, and enabling the high-rib discontinuous area at the position of the inner surface of the panel skin to be convexly deformed to one side of the outer surface;
step three: attaching a template to one side of the high-strength discontinuous area, which is positioned on the outer surface, and controlling the bulge deformation of the outer surface of the wallboard by using the template, wherein the shape curvature of the template is consistent with the pre-bending curvature of shot blasting forming to be formed on the wallboard;
step four: and stopping moving the adjusting rod when the attaching gap of the outer surface of the template wallboard is smaller than 0.5mm, and removing the template.
(3) Advantageous effects
The force blocking strip and the force pushing strip are respectively used for fixing the high-strength discontinuous wall plates before pre-bending the high-strength discontinuous wall plates, so that the high-strength discontinuous wall plates are prevented from moving relatively, and the pre-bending acting force is inconvenient to apply to the high-strength discontinuous wall plates. The adjusting rod can be arranged at the pre-bending position of the skin, so that the pre-bending of the skin can be easily realized when the adjusting rod is pushed. Finally, the high-rib discontinuous region is completely attached to the surface of the sliding top block in the pre-bending process, and further, due to the limitation of the sliding top block, the pre-bending deformation uniformity of the high-rib discontinuous region of the high-rib discontinuous wall plate can be greatly improved, so that the precision and the surface quality of the part in the follow-up shot blasting forming process are improved. By using the pre-bending tool provided by the embodiment of the invention, the numerical control shot blasting forming precision can be greatly improved, so that the manual shape correction time is greatly shortened, the production efficiency of products is improved, and the damage probability of the products is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a front view and a top view of a prior art high-strength discontinuous wall panel.
Fig. 2 is a front view of a shot peening pre-bending tool according to an embodiment of the present invention.
FIG. 3 is a side view of a shot peening pre-bend tool according to an embodiment of the present invention.
Fig. 4 is a top view of a shot peening pre-bending tool according to an embodiment of the present invention.
Fig. 5 is a front view of a shot peening pre-bending tool according to another embodiment of the present invention.
FIG. 6 is a top view of a shot peening pre-bending tool according to another embodiment of the present invention.
Fig. 7 is a front view of a high-strength discontinuous wall panel in accordance with another embodiment of the present invention in engagement with a template.
Fig. 8 is a schematic view of shot peening area of a high-strength discontinuous wall plate according to another embodiment of the present invention.
In the figure: high rib 101, skin 102, inner surface 1021, outer surface 1022, top bar 1, stop bar 2, sliding top block 3, rib clamp block 4, adjustment rod 5, clamping screw 6, spring retainer 7, spring 8, rib top block 9, template 11.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in parts, components and connections without departing from the spirit of the invention.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
The present application will be described in detail with reference to fig. 1 to 8 in conjunction with examples.
Before describing a shot peening pre-bending tool for a high-strength discontinuous wall plate according to a first aspect of the embodiment of the present invention, it is necessary to know the structure of the high-strength discontinuous wall plate according to the embodiment of the present invention. Referring to fig. 1, the high-rib discontinuous wall panel according to the embodiment of the present invention generally includes a high rib 101 and a skin 102, the skin 102 includes an inner surface 1021 and an outer surface 1022, the high rib 101 is connected to one side of the inner surface 1021 of the skin 102, and the high rib 101 is provided with a high rib discontinuous region in a length direction. Specifically, the number of the high ribs 101 may be plural as needed, and the high ribs 101 are generally perpendicular to the skin 102.
The principle of the shot peening pre-bending tool for the high-strength discontinuous wall plate according to the first aspect of the present invention is described below by pre-bending the high-strength discontinuous wall plate before shot peening.
Referring to fig. 2-fig. 4, a pre-bending tool for shot-peening forming a high-strength discontinuous wall plate according to a first aspect of the present invention includes:
a force blocking strip 2, wherein the force blocking strip 2 is arranged on one side of the outer surface 1022 of the skin 102, and the outer surface 1022 of the skin 102 is contacted with the force blocking strip 2;
the top force strips 1 are at least two, the top force strips 1 are arranged on one side of the inner surface 1021 of the skin 102, the at least two top force strips 1 are respectively arranged on two sides of a high-rib discontinuous area of the high rib 101, the top force strips 1 are connected with adjusting rods 5, the other ends of the adjusting rods 5 in the length direction extend and are abutted against the inner surface 1021 of the skin 102, and the length of the adjusting rods 5 is adjustable;
the spring baffle 7, spring baffle 7 sets up the interior surface 1021 side of covering 102, the both ends of spring baffle 7 are connected respectively on the high muscle discontinuous region's both sides the top is strong on strip 1, be equipped with the slip kicking block 3 in the high muscle discontinuous region of high muscle 101, slip kicking block 3 pass through spring 8 with spring baffle 7 is connected, spring baffle 7 is used for passing through spring 8 drives slip kicking block 3 with the contact of high muscle discontinuous region.
In the embodiment of the invention, the shot blasting forming pre-bending tool comprises a force blocking strip 2, a top force strip 1, a spring baffle 7 and the like. The force blocking strip 2 and the force pushing strip 1 are respectively used for fixing the high-strength discontinuous wall plates before pre-bending the high-strength discontinuous wall plates, so that the high-strength discontinuous wall plates are prevented from moving relatively, and the pre-bending acting force is inconvenient to be applied to the high-strength discontinuous wall plates, and therefore, the positions of the force blocking strip 2 and the force pushing strip 1 are generally kept unchanged before actual pre-bending. After the positions of the force blocking strip 2 and the force pushing strip 1 are generally kept unchanged, the high-strength discontinuous wall plate can be placed between the force blocking strip 2 and the force pushing strip 1 (as shown in fig. 2, the force blocking strip 2 is horizontally placed, the force pushing strip 1 is placed above the force blocking strip 2, and the high-strength discontinuous wall plate is supported on the force blocking strip 2).
As described above, when the high rib discontinuous wall plate is supported on the force blocking strip 2, and the force pushing strips 1 are respectively disposed on two sides of the high rib discontinuous region of the high rib 101, the force pushing strips 1 are connected with the adjusting rods 5, the other ends of the adjusting rods 5 in the length direction extend and abut against the inner surface 1021 of the skin 102, and the length of the adjusting rods 5 is adjustable. Further, by adjusting the length of the adjusting rod 5, the acting force applied by the adjusting rod 5 to the inner surface 1021 of the skin 102 of the high-strength discontinuous wall plate can be changed, and the position of the top force bar 1 is fixed, so that when the adjusting rod 5 continues to advance, the inner surface 1021 of the skin 102 of the high-strength discontinuous wall plate can be continuously advanced, and the skin 102 of the high-strength discontinuous wall plate is caused to bulge from the inner surface 1021 to the outer surface 1022 side. Therefore, when the top force bar 1 of the embodiment of the invention is actually installed, the top force bar 1 and the adjusting bar 5 can be installed at the pre-bending position of the skin 102, and the pre-bending of the skin 102 can be easily realized when the adjusting bar 5 is pushed.
Of course, if deformation of the skin 102 at the position of the adjusting rod 5 is not desired, the length of the adjusting rod 5 may be appropriately adjusted, so that the acting force applied by the adjusting rod 5 to the skin 102 is insufficient to deform the skin 102, which may be determined according to the actual requirement of shot peening of the high-strength discontinuous panel, which is not further limited herein.
Finally, in order to solve the problem that the high-strength discontinuous area pointed out in the background technology is easy to break in the pre-bending process, referring to fig. 2-5, in the embodiment of the invention, the spring baffle 7 is arranged on the top force strip 1 at two sides, the sliding top block 3 is arranged in the high-strength discontinuous area of the rib 101, the sliding top block 3 is connected with the spring baffle 7 through the spring 8, due to the elastic force of the spring 8, the sliding top block 3 is tightly attached to the surface of the high-strength discontinuous area of the high-strength discontinuous wall plate, before actual pre-bending, an arc-shaped structure can be preset on one side of the sliding top block 3 close to the surface of the high-strength discontinuous area (the curvature radius of the high-strength discontinuous area after the pre-bending is finished) so that the high-strength discontinuous area is completely attached to the surface of the sliding top block 3 in the pre-bending process, and further, due to the limitation of the sliding top block 3, the pre-bending deformation uniformity of the high-strength discontinuous area of the high-strength discontinuous wall plate can be greatly improved, and the precision and the surface quality of the part after the subsequent shot blasting can be improved.
In summary, in the embodiment of the present invention, the force blocking strip 2 and the force pushing strip 1 are respectively used for fixing the high-rib discontinuous wall plate before pre-bending the high-rib discontinuous wall plate, so as to avoid the relative movement of the high-rib discontinuous wall plate, and further, the pre-bending force is inconvenient to be applied to the high-rib discontinuous wall plate. The adjusting rod 5 can be installed at the pre-bending position of the skin 102, so that the pre-bending of the skin 102 can be easily realized when the adjusting rod 5 is pushed. Finally, the high-rib discontinuous region is completely attached to the surface of the sliding top block 3 in the pre-bending process, and further, due to the limitation of the sliding top block 3, the pre-bending deformation uniformity of the high-rib discontinuous region of the high-rib discontinuous wall plate can be greatly improved, so that the precision and the surface quality of the part in the follow-up shot blasting forming process are improved. By using the pre-bending tool provided by the embodiment of the invention, the numerical control shot blasting forming precision can be greatly improved, so that the manual shape correction time is greatly shortened, the production efficiency of products is improved, and the damage probability of the products is reduced.
According to the shot peening pre-bending tool for the high-strength discontinuous wall plate, the number of the force blocking strips 2 is not less than two, the force blocking strips 2 are respectively arranged on two sides of the high-strength discontinuous area, and the force blocking strips 2 are fixedly arranged at a certain position. Referring to fig. 2-5, the force blocking strips 2 are used for supporting the high-rib discontinuous wall plate, so that the number of the force blocking strips 2 is not less than two, and the force blocking strips can stably support the high-rib discontinuous wall plate, so that the high-rib discontinuous wall plate can be kept stable in the follow-up pre-bending process. Meanwhile, the force blocking strips 2 are respectively arranged on two sides of the high-strength discontinuous area to play a role in balancing supporting force, so that the gravity center of the high-strength discontinuous wall plate is kept stable, the force blocking strips 2 are separated from the high-strength discontinuous area of the high-strength discontinuous wall plate, and the influence of the force blocking strips 2 on the pre-bending of the high-strength discontinuous area of the high-strength discontinuous wall plate can be avoided.
According to the embodiment of the invention, the shot peening pre-bending tool for the high-strength discontinuous wall plate further comprises: the rib clamping blocks 4 are connected to one side of the high rib 101, which is located in the high rib discontinuous area. Referring to fig. 2-5, the rib clamping block 4 is used for being connected to the side of the rib 101 located at the high rib discontinuous area, in the embodiment of the present invention, the high rib 101 is located at both ends of the high rib discontinuous area, so that one rib clamping block 4 can be disposed on the high rib 101 at both ends of the high rib discontinuous area, and when the rib clamping block 4 is connected to the high rib 101, during the pre-bending process of the high rib discontinuous area, the inner wall area of the high rib discontinuous area (i.e. the inner surface 1021 of the skin 102) can be contacted with the inner wall of the rib clamping block 4, so that the rib clamping block 4 can play a role in supporting and uniformly dispersing bending force for bending of the high rib discontinuous area, which is beneficial to ensuring uniformity of pre-bending and avoiding abrupt change. Therefore, the rib clamping block 4 and the sliding top block 3 are matched, and the high rib discontinuous region and the region connected with the end part of the high rib 101 can play roles in supporting and uniformly dispersing bending force.
Specifically, referring to fig. 2, the rib clamping blocks 4 may be right trapezoid structures, the sliding top blocks 3 are isosceles trapezoid structures arranged in an inverted manner, and after the middle sliding top block 3 is matched with the rib clamping blocks 4 on two sides, the rib clamping blocks can play roles in supporting and uniformly dispersing bending forces on the high rib discontinuous regions, and the regions where the high rib discontinuous regions are connected with the end parts of the high ribs 101. Meanwhile, when the rib discontinuous region is protruded toward the inner surface 1021 side of the skin 102, the sliding roof block 3 in the middle and the rib clamp blocks 4 on the both sides do not interfere with each other. At the same time, so arranged, the intermediate sliding roof 3 can be fed towards the inner surface 1021 until the sliding roof 3 comes into contact with the side ends of the rib clips 4 and the force remains balanced.
According to the shot peening pre-bending tool for the high-strength discontinuous wall plate, the side end face of the sliding top block 3 and the side end face of the rib clamping block 4 can slide relatively. Referring to fig. 2, in the embodiment of the present invention, the middle sliding top block 3 may be fed toward the inner surface 1021, so that after the side end surfaces of the sliding top block 3 and the side end surfaces of the rib clamping blocks 4 are configured to be relatively slidable, the sliding top block 3 is convenient to feed and attach to the inner surface 1021 of the high-rib discontinuous region, and in this way, in the pre-bending process of the high-rib discontinuous region, the sliding top block 3 and the inner surface 1021 are uniformly attached, which can play a role of uniformly dispersing the high-rib discontinuous region, and avoid the occurrence of abrupt change.
Further, as shown in fig. 5, in actual use, the end portions of the rib clamping blocks 4 may not be attached to the inner surface 1021, so that the rib clamping blocks 4 on two sides of the sliding top block 3 may also serve the purpose of limiting the sliding top block 3, and after the arrangement, the sliding top block 3 and the rib clamping blocks 4 slide relatively and then are attached to the inner surface 1021 in a high-rib discontinuous region smoothly.
Specifically, referring to fig. 2 and fig. 3, in a shot peening pre-bending tool for a high-rib discontinuous wall plate according to a first aspect of the present invention, the rib clamping block 4 is connected with the rib 101 through a clamping screw 6. The rib clamping block 4 is connected with the rib 101 by the clamping screw 6, so that the effect of firm and reliable connection and convenient disassembly can be achieved. Of course, any other method may be used in practical use, and is not limited herein.
Further, as described above, after the rib clamping block 4 is connected to the high rib 101, in the pre-bending process of the high rib discontinuous region, the inner wall region of the high rib discontinuous region (that is, the inner surface 1021 of the skin 102 may contact with the inner wall of the rib clamping block 4, so that the rib clamping block 4 may play a role in supporting and uniformly dispersing bending force for bending the high rib discontinuous region, which is beneficial to ensuring uniformity of pre-bending, and avoiding abrupt change.
Specifically, referring to fig. 2, fig. 3 and fig. 5, a shot peening pre-bending tool for a high-strength discontinuous wall plate according to a first aspect of the present invention, the shot peening pre-bending tool further includes: the rib jacking block 9, the rib jacking block 9 is connected to one side of the skin 102 located on the inner surface 1021, and the other end of the adjusting rod 5 in the length direction abuts against the end face of the rib jacking block 9. In the embodiment of the present invention, the adjusting rod 5 is mainly used for applying pressure to the inner surface 1021 of the skin 102 under the limitation of the top force bar 1, so that the inner surface 1021 is deformed, and a required deformation structure (such as a protrusion, a recess, etc.) is obtained at the corresponding position of the high-strength discontinuous wall plate. However, in the actual pre-bending process, the acting force of the adjusting rod 5 on the inner surface 1021 always presents a dot structure (the end of the adjusting rod 5 is a circular structure or a square structure with smaller area, etc.), and a complete arc surface structure cannot be formed at the corresponding position of the high-strength discontinuous wall plate. Therefore, when the rib jacking block 9 is connected to the skin 102 at one side of the inner surface 1021, the rib jacking block 9 is arranged at the position of the recess or the protrusion expected by the discontinuous high-rib wall plate, and when the adjusting rod 5 applies an acting force to the rib jacking block 9, the rib jacking block 9 can transmit pressure to the whole inner surface 1021 at the corresponding position of the discontinuous high-rib wall plate, so that the corresponding position of the discontinuous high-rib wall plate can deform like the protrusion or the recess. Therefore, the rib top block 9 can form a wide deformation structure, and is placed at the expected bending position, and the pre-bending operation of the high-rib discontinuous wall plate can be realized by designing the target structure of the expected bending position.
Further, in the embodiment of the present invention, the adjusting rod 5 may apply a pushing force to the inner surface 1021, or may apply a pulling force to the inner surface 1021, for example, the adjusting rod 5 may apply a pushing force to the inner surface 1021 during the screwing process, so as to form a recess from the inner surface 1021 to the outer surface 1022. For example, when the adjusting rod 5 is retracted toward the top bar 1, a pulling force may be applied to the inner surface 1021 (in this case, a connecting structure similar to a bearing may be provided on the inner surface 1021 or the rib top block 9, and the inner ring of the bearing is fixedly connected to the adjusting rod 5), so as to form a protrusion of the outer surface 1022 toward the inner surface 1021. Which may be as desired and will not be described in detail herein.
Specifically, referring to fig. 2, fig. 3 and fig. 5, according to the shot peening pre-bending tool for the high-strength discontinuous wall plate according to the first aspect of the embodiment of the present invention, the adjusting rod 5 is a threaded rod, a threaded hole is formed in the top force bar 1, and the adjusting rod 5 penetrates through the threaded hole and is connected with the threaded hole in a threaded manner. When adjusting pole 5 is the threaded rod, only need set up the screw hole that runs through on top power strip 1, adjust pole 5 threaded connection in the screw hole, can conveniently adjust the distance of adjusting pole 5 from interior surface 1021. At the same time, the threaded connection is also convenient for positioning to achieve stable support of the inner surface 1021.
Specifically, referring to fig. 2, fig. 3 and fig. 5, in the shot peening pre-bending tool for a high-strength discontinuous wall plate according to the first aspect of the present invention, the top force bar 1, the force blocking bar 2 and the rib top block 9 are all perpendicular to the Gao Jintiao 101. After the top force bar 1, the force blocking bar 2 and the rib top block 9 are vertically arranged with the high rib 101, the high rib discontinuous area on the high rib discontinuous wall plate can be avoided, and meanwhile, the required pre-bending structure can be formed on the high rib discontinuous wall plate.
According to a second aspect of the embodiment of the invention, a method for performing shot peening forming on a high-strength discontinuous wall plate by using the shot peening forming pre-bending tool for the high-strength discontinuous wall plate according to any one of the first aspect of the embodiment of the invention comprises the following steps:
step one: performing pre-bending treatment on a high-reinforcement discontinuous region of the high-reinforcement discontinuous wall plate by adopting the shot blasting forming pre-bending tool for the high-reinforcement discontinuous wall plate according to any one of the first aspect of the embodiment of the invention;
step two: and (3) performing shot peening on the outer surface 1022 of the wallboard, and unloading the shot peening tool after shot peening is finished.
In an embodiment of the present invention, the high-rib discontinuous area of the high-rib discontinuous wall panel is pre-bent by using the shot-peening pre-bending tool for forming the high-rib discontinuous wall panel according to any one of the first aspect of the embodiment of the present invention, then the outer surface 1022 of the wall panel is shot-peened, and after the shot-peening is finished, the shot-peening tool is unloaded.
Aiming at the shot-peening forming requirement of the high-strength discontinuous ribbed wallboard, the embodiment of the invention provides a pre-bending tool for applying the shot-peening forming prestress of the high-strength discontinuous ribbed wallboard, which greatly improves the pre-bending curvature uniformity of the high-strength discontinuous ribbed wallboard part, thereby improving the shot-peening forming precision and the surface quality of the part. The shot blasting operation is performed after the pre-bending, so that proper shot blasting parameters and shot blasting coverage rates of different areas can be set, the numerical control shot blasting forming precision can be greatly improved, the manual shape correcting time is greatly shortened, and the production efficiency of products is improved.
Specifically, according to a second aspect of the embodiment of the present invention, referring to fig. 5 to fig. 7, a shot peening forming method for a high-strength discontinuous wall plate includes:
step one: mounting the high-strength discontinuous wall plate on the shot-peening pre-bending tool by adopting the shot-peening pre-bending tool for the high-strength discontinuous wall plate according to any one of the first aspect of the embodiment of the invention, wherein the top width La, la= (45% -60%) of the sliding top block 3 is equal to L, wherein L is the length of the high-strength discontinuous region of the wall plate;
step two: applying a tightening force to the adjustment lever 5, adjusting the displacement of the adjustment lever 5 so as to be in contact with the inner surface 1021 of the panel skin 102, and deforming the high-rib discontinuous region at the position of the inner surface 1021 of the panel skin 102 to the side of the outer surface 1022;
step three: attaching a template 11 to one side of the high-rib discontinuous region, which is positioned on the outer surface 1022, and controlling the convex deformation of the outer surface 1022 of the wallboard by using the template 11, wherein the shape curvature of the template 11 is consistent with the pre-bending curvature of shot blasting to be formed of the wallboard;
step four: when the bonding gap of the outer surface 1022 of the panel of the template 10 is less than 0.5mm, the movement of the adjusting lever 5 is stopped, and the template 11 is removed.
In the embodiment of the present invention, the structure of the sliding roof 3 according to the embodiment of the present invention is firstly formulated according to the length of the high-rib discontinuous region, so as to adapt to the structure of the sliding roof 3 to meet the requirement of the size of the high-rib discontinuous region, and avoid that the sliding roof 3 cannot form stable contact with the inner surface 1021 of the panel skin 102, and the installation of the high-rib discontinuous panel on the shot-peening forming pre-bending tool specifically includes placing the high-rib discontinuous panel on the retaining bar 2, and then the top width la= (45% -60%) of the sliding roof 3 is represented by L, where L is the length of the high-rib discontinuous region of the panel, so that when the high-rib discontinuous region is pre-bent, the length of the high-rib discontinuous region has enough margin so that the high ribs 101 on two sides cannot form interference on the sliding roof 3.
Then, in the embodiment of the present invention, a tightening force is applied to the adjustment lever 5, and the displacement of the adjustment lever 5 is adjusted so as to be in contact with the inner surface 1021 of the panel skin 102, and so that the high-rib discontinuous region at the position of the inner surface 1021 of the panel skin 102 is convexly deformed to the outer surface 1022 side, forming a desired convex structure. Next, attaching the template 11 to one side of the high-rib discontinuous region, which is positioned on the outer surface 1022, and controlling the convex deformation of the outer surface 1022 of the wallboard by using the template 11, wherein the shape curvature of the template 11 is consistent with the pre-bending curvature of shot blasting to be formed of the wallboard; here, in the embodiment of the present invention, the template 11 may be a plate structure having a predetermined pre-bending curvature, and when the template 11 is attached to the side of the outer surface 1022 of the high-rib discontinuous region, the template 11 may be used as a pre-bending curvature reference for bending the high-rib discontinuous region, so that it is necessary that the profile curvature of the template 11 matches the pre-bending curvature of the shot-peening to be formed on the wall plate. Along with the feeding of the adjusting rod 5, the protrusion appears at the outer surface 1022, and the protrusion at the adjusting rod 5 of the outer surface 1022 immediately drives the whole skin 102 to deform, so as to drive the discontinuous high-rib region to deform, and the discontinuous high-rib region is not easy to break due to the protection of the sliding top block 3. Meanwhile, the template 11 is arranged so that the pre-bending curvature of the high-rib discontinuous region reaches to the preset value.
Finally, when the bonding gap of the outer surface 1022 of the wall plate of the template 11 is smaller than 0.5mm, the movement of the adjusting rod 5 is stopped, and the pre-bending curvature of the high-rib discontinuous area is close to that of the template 11, so that the preset target is reached, the bending can be stopped, and the template 11 is removed. In summary, the embodiment of the invention can obtain the high-strength discontinuous wall plate with preset curvature, and the operation method is simple, reliable and easy to implement.
The following describes a concrete embodiment of the shot peening pre-bending tool for the high-strength discontinuous wall plate and the forming method using the same.
Referring to FIG. 1, a ribbed integral wallboard component (2000 mm by 1000mm, material grade: 2024-T351) has a minimum radius of curvature of 15 meters along the height rib 101. The pre-bending tool for shot peening forming of the high-strength discontinuous wall plate and the forming method using the pre-bending tool are utilized to perform pre-stress shot peening forming on the parts, shot peening forming parameters are shown in the following table, the requirements of appearance precision and surface smoothness are finally met, the die attaching gap of the parts is smaller than 0.5mm, and the surface waviness is smaller than 0.0025mm.
In detail, referring to fig. 2-5, the shot-peening pre-bending tool for the high-strength discontinuous wall plate according to the embodiment of the invention comprises a top force bar 1, a blocking force bar 2, a sliding top block 3, a rib clamping block 4, an adjusting rod 5, a clamping screw 6, a spring baffle 7, a spring 8 and a rib top block 9. The top force bar 1 and the force blocking bar 2 are made of materials with good rigidity, the positions of the adjusting bars 5 are kept unchanged in the process of applying prestress, and the positions of the adjusting bars 5 penetrate through the top force bar 1 and are aligned with the centers of the rib top blocks 9. The adjusting rod 5 is a screw, and by tightening the adjusting rod 5, the adjusting rod can move towards the direction of the rib jacking block 9 and be contacted with the rib jacking block, and further tightening can enable the rib jacking block 9 to be contacted with the inner surface 1021 of the panel skin 102, and enable the panel skin 102 to be convexly deformed towards the outer surface 1022. The contact portion of the rib top block 9 and the inner surface 1021 of the panel skin 102 is a curved surface. The two force straps 2 contact the outer surface 1022 of the panel skin 102 and act to constrain this contact area from displacement. The rib clamping block 4 is fixed relative to the side surface of the wallboard rib 101 through the clamping screw 6. The contact portion of the rib clip 4 with the inner surface 1021 of the panel skin 102 is curved. The sliding top block 3 and the rib clamping block 4 can slide relatively. A spring 8 is arranged between the sliding top block 3 and the spring baffle 7, and the sliding top block 3 can move under the constraint of the spring 8. The spring baffle 7 is made of a material with good rigidity, is connected with the top force strip 1, and is fixed in position, and the number of the spring baffle is consistent with that of the ribs.
The high-strength discontinuous wall plate shot peening pre-bending tool of the embodiment is used for pre-bending and shot peening to the high-strength discontinuous area
Firstly, the top curved surface R of the sliding top block 3 has a width La, wherein La=60% L, and L is the length of a high rib discontinuous region of the wallboard;
next, a tightening force is applied to the adjusting rod 5, and the displacement of the adjusting rod 5 is adjusted, so that the rib top blocks 9 are in contact with the inner surface 1021 of the panel skin 102, and the inner surface 1021 of the panel high rib discontinuous region is convexly deformed to the outer surface 1022;
then, the template 11 is used for controlling the convex deformation of the outer surface 1022 of the wallboard, the length of the template 11 is properly adjusted along with the length of the part, the thickness is 5mm, and the shape curvature of the template is consistent with the pre-bending curvature of the wallboard in shot blasting forming;
then, when the bonding gap of the outer surface of the wallboard of the template 11 is smaller than 0.5mm, stopping moving the adjusting rod 5, and removing the template 11 at the moment;
then, shot blasting forming is carried out on the outer surface 1022 of the wallboard, and technological parameters such as shot blasting air pressure, shot flow, wallboard moving speed, injection angle and the like are designed, wherein a shot blasting area is shown in a figure 8, so that the shot coverage rate of a zone B is 60% -75% of that of a zone A, and the shot coverage rate of a zone C is 45% -50% of that of a zone A;
and finally, unloading the pre-bending tool after shot blasting is finished, and taking down the wallboard part.
As can be seen from fig. 8, the best shot blasting effect can be achieved by selecting different shot coverage rates for different areas.
In summary, the embodiment of the invention provides the shot peening pre-bending tool for the high-strength discontinuous ribbed wallboard and the forming method using the same, aiming at the shot peening forming requirement of the high-strength discontinuous ribbed wallboard, so that the uniformity of the pre-bending curvature of the part is greatly improved, and the shot peening forming precision and the surface quality of the part are improved. In addition, the numerical control shot blasting forming precision can be greatly improved by the zonal shot blasting forming parameter design and the shot blasting coverage relation of different zones, so that the manual shape correcting time is greatly shortened, and the production efficiency of products is improved by more than 40%.
It should be understood that, in the present specification, each embodiment is described in an incremental manner, and the same or similar parts between the embodiments are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. For embodiments of the method, reference may be made to the description of parts of embodiments of the apparatus. The invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known method techniques is omitted here for the sake of brevity.
The foregoing is merely exemplary of the present application and is not limited thereto. Various modifications and alterations of this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. A high-strength discontinuous wall panel shot peening pre-bending tool, the high-strength discontinuous wall panel comprising: high rib (101) and covering (102), covering (102) are including interior surface (1021) and surface (1022), gao Jintiao (101) connect in interior surface (1021) one side of covering (102), just Gao Jintiao (101) are equipped with high rib discontinuous region at length direction, its characterized in that, shot-blast shaping preflex frock includes:
a force blocking strip (2), wherein the force blocking strip (2) is arranged on one side of the outer surface (1022) of the skin (102), and the outer surface (1022) of the skin (102) is contacted with the force blocking strip (2);
the top force strips (1), the top force strips (1) are at least two, the top force strips (1) are arranged on one side of the inner surface (1021) of the skin (102), the at least two top force strips (1) are respectively arranged on two sides of a high-rib discontinuous area of the Gao Jintiao (101), the top force strips (1) are connected with adjusting rods (5), the other ends of the adjusting rods (5) in the length direction extend and are abutted to the inner surface (1021) of the skin (102), and the length of the adjusting rods (5) is adjustable;
spring baffle (7), spring baffle (7) set up the internal surface (1021) side of covering (102), the both ends of spring baffle (7) are connected respectively on top power strip (1) of the both sides in high muscle discontinuous region, be equipped with slip kicking block (3) in the high muscle discontinuous region of Gao Jintiao (101), slip kicking block (3) pass through spring (8) with spring baffle (7) are connected, spring baffle (7) are used for passing through spring (8) drive slip kicking block (3) with the contact of high muscle discontinuous region.
2. The shot peening pre-bending tool for the high-strength discontinuous wall plate according to claim 1, wherein at least two force blocking strips (2) are arranged, at least two force blocking strips (2) are respectively arranged on two sides of the high-strength discontinuous area, and a certain position is fixedly arranged on the force blocking strips (2).
3. The high-strength discontinuous wall panel shot peening pre-bending tool as defined in claim 1, wherein said shot peening tool further comprises: and the rib clamping blocks (4) are connected to one side of the Gao Jintiao (101) located in the high rib discontinuous region.
4. A high-strength discontinuous wall panel shot-peening pre-bending tool according to claim 3, wherein the side end surface of the sliding top block (3) and the side end surface of the rib clamping block (4) can slide relatively.
5. A high-strength discontinuous wall panel shot-peening pre-bending tooling according to claim 3, wherein the rib clamping block (4) is connected with the Gao Jintiao (101) by a clamping screw (6).
6. The high-strength discontinuous wall panel shot peening pre-bending tool as defined in claim 1, wherein said shot peening tool further comprises: the rib jacking block (9), the rib jacking block (9) is connected to one side of the skin (102) located on the inner surface (1021), and the other end of the adjusting rod (5) in the length direction is abutted to the end face of the rib jacking block (9).
7. The shot peening pre-bending tool for the high-strength discontinuous wall plate according to claim 1, wherein the adjusting rod (5) is a threaded rod, a threaded hole is formed in the top force bar (1), and the adjusting rod (5) penetrates through the threaded hole and is connected with the threaded hole in a threaded mode.
8. The shot peening pre-bending tool for the high-strength discontinuous wall plate according to claim 6, wherein the top force bar (1), the force blocking bar (2) and the rib top block (9) are all perpendicular to the Gao Jintiao (101).
9. A method for shot peening a high-strength discontinuous wall plate by using the shot peening pre-bending tool for the high-strength discontinuous wall plate according to any one of claims 1 to 8, comprising the following steps:
step one: pre-bending a high-reinforcement discontinuous region of the high-reinforcement discontinuous wall plate by adopting the shot blasting forming pre-bending tool for the high-reinforcement discontinuous wall plate according to any one of claims 1 to 8;
step two: and (3) performing shot peening on the outer surface (1022) of the wallboard, and unloading the shot peening tool after shot peening is finished.
10. The method for shot peening forming of the high-strength discontinuous wall plate according to claim 9, wherein the method for using the shot peening pre-bending tool comprises the following steps:
step one: mounting the high-strength discontinuous wall plate on the shot forming pre-bending tool by adopting the shot forming pre-bending tool for the high-strength discontinuous wall plate according to any one of claims 1 to 8, wherein the top width La, la= (45% -60%) of the sliding top block (3) is L, wherein L is the length of the high-strength discontinuous region of the wall plate;
step two: applying a tightening force to the adjusting rod (5), adjusting the displacement of the adjusting rod (5) to be in contact with the inner surface (1021) of the panel skin (102), and enabling the high-rib discontinuous area at the position of the inner surface (1021) of the panel skin (102) to be convexly deformed to the side of the outer surface (1022);
step three: attaching a template (11) to one side of the high-rib discontinuous region, which is positioned on the outer surface (1022), and controlling the convex deformation of the outer surface (1022) of the wallboard by using the template (11), wherein the shape curvature of the template (11) is consistent with the pre-bending curvature of shot blasting to be formed of the wallboard;
step four: when the bonding gap of the outer surface (1022) of the wallboard of the template (11) is smaller than 0.5mm, the movement of the adjusting rod (5) is stopped, and the template (11) is removed.
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| CN202210827855.6A CN115090750B (en) | 2022-07-14 | 2022-07-14 | Shot-peening pre-bending tool for high-strength discontinuous wall plate and forming method using same |
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| CN202210827855.6A CN115090750B (en) | 2022-07-14 | 2022-07-14 | Shot-peening pre-bending tool for high-strength discontinuous wall plate and forming method using same |
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| CN116713381B (en) * | 2023-06-27 | 2024-06-07 | 中国航空制造技术研究院 | Shot-peening pre-bending tool and method for ribbed wallboard |
| CN117086504A (en) * | 2023-10-18 | 2023-11-21 | 中国航空制造技术研究院 | Shot blasting forming profile control method for thin-wall T-shaped welded ribbed wallboard |
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