Airfoil skin drawing die
By designing an airfoil skin drawing die and controlling the material flow by synchronously moving the clamping plate and clamping part, the problem of uncontrolled material flow during the drawing process was solved, enabling one-time forming of parts and improving production efficiency and part quality.
Patent Information
- Application Number
- CN202520084885.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing mold forming equipment suffers from uncontrolled material flow during the material drawing process, leading to cracking, wrinkling, and other phenomena in the parts, increasing the risk of scrapping. Furthermore, multiple forming processes result in low production efficiency and large dimensional deviations.
Design a wing-shaped skin drawing die. When the upper and lower molds are closed, the clamping plate and the clamping part move synchronously. The material flow is controlled by the clamping plate and the clamping part to prevent material movement and ensure that the material is clamped during the mold closing process, so as to achieve one-time molding.
Effective control of material flow reduces surface defects in parts, improves production efficiency and part qualification rate, reduces scrap risk, and ensures smooth and wrinkle-free parts surfaces.
Smart Images
Figure CN223718137U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to aviation part mould technical field especially is a wing type skin drawing die. BACKGROUND
[0002] The aircraft skin part refers to the component surrounded outside the aircraft skeleton structure, is used for maintaining the aerodynamic shape of the aircraft, simultaneously bears and transmits the aerodynamic load, currently, needs to use the mould to form the skin sheet metal part of complex curved surface, since the principle of mould forming device is through its specific cavity and forming surface, injects or presses into the molten material (such as plastic, metal etc.), after the material cooling solidification, obtains the part of required shape, therefore, the mould forming device will directly influence the shape, size and surface quality of part curved surface part.
[0003] The existing mould forming device usually adopts multiple forming mode, and multiple forming means multiple stamping, which not only has the problem of low production efficiency, since the flowing material is not controlled in the drawing process, produces phenomena such as cracking, wrinkle etc., leads to the increased risk of part scrap each time forming, and multiple positioning mould leads to the existence of large size deviation of part after forming, greatly reduces the part quality, influences the assembly process of subsequent parts, in addition, the size of sheet metal part curved surface part needs to meet the customer drawing requirement, and the curved surface part is smooth and connected, if the mould forming die is not well designed, cannot meet the basic drawing requirement, then will directly lead to the scrap of part. SUMMARY
[0004] Therefore, the utility model wants to overcome the problem of the flowing material not being controlled in the drawing process in the prior art, producing phenomena such as cracking, wrinkle etc., aggravating the risk of part scrap, and further provide a wing type skin drawing die, which can effectively control the flowing material in the drawing process, reduce the movement of the flowing material, ensure that the part is formed at one time, the surface is smooth and wrinkle-free, and improve the production efficiency and the qualified rate of the part.
[0005] To solve the above technical problems, the utility model provides a wing type skin drawing die, which comprises,
[0006] The upper die body is provided with clamping portions on opposite sides in one direction;
[0007] The lower die body is arranged opposite to the upper die body;
[0008] The material clamping plate is arranged on opposite sides of the lower die body, and the material clamping plate is arranged opposite to the clamping portions in the direction of movement of the upper die body, the material clamping plate is movably connected with the lower die body, and the material clamping plate is arranged to be movable in the direction of movement of the upper die body;
[0009] A driving assembly drives the material clamping plate to follow the movement of the upper die at the same speed.
[0010] In an embodiment of the utility model, the upper die is provided with a first machining surface, the upper die is provided with a second machining surface, the first machining surface is vertically arranged above the second machining surface, and the clamping part is located on opposite sides of the first machining surface, and the material clamping plate is located on opposite sides of the second machining surface.
[0011] In an embodiment of the utility model, the height of the first machining surface is higher than that of the clamping part.
[0012] In an embodiment of the utility model, the driving assembly comprises a hydraulic jack, and the hydraulic jack pushes the material clamping plate in the movement direction of the upper die.
[0013] In an embodiment of the utility model, the utility model further comprises a guide column extending in the movement direction of the upper die, and the guide column passes through the guide hole of the material clamping plate.
[0014] In an embodiment of the utility model, the upper die is provided with a guide sleeve, and the guide sleeve is sleeved outside the guide column.
[0015] In an embodiment of the utility model, the utility model further comprises a bottom plate, the lower die and the guide column are fixedly arranged on the bottom plate, and the bottom plate is located on one side of the material clamping plate relative to the upper die.
[0016] In an embodiment of the utility model, the bottom plate is provided with an avoiding hole, and the hydraulic jack passes through the avoiding hole.
[0017] In an embodiment of the utility model, the upper die is provided with an upper cover plate, and the upper cover plate is connected with the top column of the hydraulic machine top cylinder.
[0018] In an embodiment of the utility model, the material clamping plate is arranged in a ring structure, and the material clamping plate horizontally surrounds the periphery of the lower die.
[0019] In an embodiment of the utility model, the material clamping plate is sequentially and circularly connected by a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate, wherein the first connecting plate and the third connecting plate are vertically arranged, the second connecting plate and the fourth connecting plate are vertically arranged, the first connecting plate and the third connecting plate are vertically arranged relative to the clamping part, and the guide hole is arranged on the first connecting plate and the third connecting plate.
[0020] Compared with the prior art, the above technical scheme of the utility model has the following beneficial effects:
[0021] The wing skin drawing die has the advantages that the blank material on the two sides of the material is pre-clamped by the clamping plate and the clamping part, the flow of the material in the drawing and stretching process can be controlled, the phenomena such as wrinkle and crack of the material are prevented, the smoothness of the surface of the part is improved, the error of the size of two parts is reduced, and the risk of part scrapping is reduced; the clamping plate is driven to move synchronously with the upper die by the driving assembly, so that the clamping plate and the clamping part always clamp the blank material of the material during the process that the upper die and the lower die are combined; the relative two sides of the upper die in one direction are provided with the clamping part, and the two sides in another direction are reserved for the blank material of the material, so that the flowability of the material is effectively ensured, the material sinking place is not scratched, and the part can be quickly taken out. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to make the content of the utility model more easily understood clearly, the utility model is further explained in detail below according to the specific embodiment of the utility model and in combination with the drawings, wherein
[0023] Figure 1 It is the structure schematic view of the wing skin drawing die.
[0024] Figure 2 It is Figure 1 The structure schematic view of the side view of the wing skin drawing die.
[0025] Figure 3 It is Figure 1 The structure schematic view of the upper die.
[0026] Figure 4 It is Figure 1 The structure schematic view of the lower die.
[0027] Figure 5 It is Figure 1 The structure schematic view of the clamping plate.
[0028] Figure 6 It is Figure 1 The structure schematic view of the bottom plate.
[0029] The description of the drawing of the specification is as follows: 1, upper die; 2, clamping part; 3, lower die; 4, clamping plate; 5, driving assembly; 6, first processing surface; 7, second processing surface; 8, guide column; 9, guide sleeve; 10, bottom plate; 11, upper cover plate; 12, guide hole; 13, avoiding hole; 14, first connecting plate; 15, second connecting plate; 16, third connecting plate; 17, fourth connecting plate; 18, avoiding hole. DETAILED DESCRIPTION
[0030] The utility model will be further described below in combination with the drawings and specific embodiments, so that the skilled in the art can better understand the utility model and can be implemented, but the embodiments are not as the limitation of the utility model.
[0031] Referring to Figure 1 and Figure 2 As shown in the utility model in one embodiment, a wing type skin drawing die is disclosed, comprising,
[0032] The upper die body 1 is provided with clamping portions 2 on opposite sides in a horizontal direction, which can be understood as a structure protruding from the profile of the upper die body 1, and the clamping portions 2 extend in another horizontal direction, so that the clamping portions 2 can press the material first when the upper die body 1 is closed, preventing the material from moving, and then the profile can press the material;
[0033] Further, the upper die body 1 is not provided with clamping portions 2 on opposite sides in another direction, which is to reserve space for the excess material, to ensure the normal and effective flow of the material during drawing, and to prevent scratches at the sagging part;
[0034] The lower die body 3 is arranged opposite to the upper die body 1, specifically, the lower die body 3 and the upper die body 1 are preferably arranged vertically, i.e., the lower die body 3 and the upper die body 1 are vertically closed, and in other embodiments, the lower die body 3 and the upper die body 1 can be arranged horizontally, i.e., the lower die body 3 and the upper die body 1 are horizontally closed;
[0035] The material clamping plate 4 is horizontally arranged on opposite sides of the lower die body 3, and the material clamping plate 4 is arranged opposite to the clamping portions 2 in the moving direction of the upper die body 1, so that the clamping portions 2 can press the blank of the material on the clamping portions 2 when the upper die body 1 and the lower die body 3 are closed, preventing the material from moving, preventing the material from wrinkling, tearing, and other phenomena, thereby improving the smoothness of the surface of the part; in order to enable the upper die body 1 to descend and clamp the blank, the material clamping plate 4 is movably connected to the lower die body 3, and the material clamping plate 4 is arranged to be able to descend in the moving direction of the upper die body 1 under the pressure of the upper die body 1;
[0036] The driving assembly drives the material clamping plate 4 to move at the same speed as the upper die body 1, so that the material clamping plate 4 and the upper die body 1 descend synchronously, so that the blank of the material is always clamped when the upper die body 1 and the lower die body 3 are closed.
[0037] Referring to Figure 3 and Figure 4As shown, the lower surface of the upper die shoe 1 is provided with a first processing surface 6, and the upper surface of the upper die shoe 1 is provided with a second processing surface 7, both of which are matched with the surface shape of the required part, the first processing surface 6 is directly arranged above the second processing surface 7, and the first processing surface 6 and the second processing surface 7 are in close contact with and pressed on the upper surface and the lower surface of the material respectively, so as to form the required shape; the clamping part 2 is located on the opposite sides of the first processing surface 6, and the material clamping plate 4 is located on the opposite sides of the second processing surface 7, so that when the material is placed on the second processing surface 7, the clamping part 2 and the material clamping plate 4 can press the blank material on both sides of the material.
[0038] Referring to Figure 2 As shown, the height of the first processing surface 6 is higher than that of the clamping part 2, so that when the lower die shoe 3 descends, the clamping part 2 is first pressed on the material clamping plate 4 to fix the blank material of the material.
[0039] Referring to Figure 1 As shown, the driving assembly includes a vertically arranged hydraulic jack, a part of the hydraulic machine of the hydraulic jack, the hydraulic jack is arranged at the bottom of the material clamping plate 4, and the hydraulic jack can push the material clamping plate 4 upwards, and the advantage of the hydraulic jack is that the descending amount is positively correlated with the pressure of the upper die shoe 1, so that the material clamping plate 4 can descend synchronously with the upper die shoe 1 under the pressure of the upper die shoe 1.
[0040] Further, in order to uniformly support both sides of the material clamping plate 4, four hydraulic jacks are arranged on both sides of the upper die shoe 1.
[0041] Referring to Figure 1 and Figure 5 As shown, in order to ensure that the material clamping plate 4 can descend accurately and stably without shaking, a guide column 8 extending along the moving direction of the upper die shoe 1 is further included, the guide column 8 is arranged on both sides of the material clamping plate 4, the guide column 8 passes through the guide hole 12 of the material clamping plate 4, and the material clamping plate 4 is guided by the guide column 8.
[0042] Referring to Figure 1 As shown, in order to ensure that the upper die shoe 1 can descend accurately and stably without shaking, the upper die shoe 1 is provided with a guide sleeve 9, the guide sleeve 9 is sleeved outside the guide column 8, the upper die shoe 1 is guided by the guide column 8, the repeated positioning of the upper die shoe 1 and the lower die shoe 3 can be reduced, and the pre-forming and the final forming of the part can be completed at one time.
[0043] Referring to Figure 1As shown in the drawings, in order to improve the stability of the lower mold base 3, a bottom plate 10 fixedly connected to the hydraulic machine is further included, the lower mold base 3 and the guide column 8 are fixedly arranged on the upper surface of the bottom plate 10, and the bottom plate 10 is located on the side of the clamping plate 4 relative to the upper mold base 1, and the clamping plate 4 can be lifted and lowered between the upper mold base 1 and the bottom plate 10.
[0044] Referring to Figure 6 As shown in the drawings, in order to install the bottom plate 10 to the hydraulic machine, the bottom plate 10 is provided with an avoiding hole 13, and the hydraulic jacks on both sides of the lower mold base 3 pass through the avoiding hole 13.
[0045] Referring to Figure 1 As shown in the drawings, in order to connect the upper mold base 1 with the top column of the hydraulic machine, so that the hydraulic machine can adjust the gap between the formed part and the upper mold base 1, the upper mold base 1 is provided with an upper fixedly arranged cover plate 11, and the cover plate 11 is connected with the top column of the top cylinder of the hydraulic machine through screws, so that the gap between the cover plate 11 and the formed part can be adjusted by the top column of the hydraulic machine, and the size of the part can be effectively controlled by setting an adjustable gap to meet the requirements of the drawing.
[0046] Referring to Figure 5 As shown in the drawings, in order to make the clamping plates 4 on both sides of the lower mold base 3 be able to uniformly descend, the clamping plates 4 are arranged in a ring structure, and the clamping plates 4 horizontally surround the periphery of the lower mold base 3, and it can also be understood that the clamping plates 4 are provided with avoiding openings 18, the lower mold base 3 passes through the avoiding openings 18, and the avoiding openings are matched with the periphery of the lower mold base 3.
[0047] Referring to Figure 5 As shown in the drawings, further, the clamping plates 4 are sequentially and end-to-end welded by a first connecting plate 14, a second connecting plate 15, a third connecting plate 16 and a fourth connecting plate 17, wherein the first connecting plate 14 and the third connecting plate 16 are oppositely arranged, and the second connecting plate 15 and the fourth connecting plate 17 are oppositely arranged, wherein the first connecting plate 14 and the third connecting plate 16 are oppositely arranged on the clamping part 2, and the guide hole 12 is arranged on the first connecting plate 14 and the third connecting plate 16.
[0048] The working principle of the wing-shaped skin drawing die is as follows:
[0049] The material is put into the second processing surface 7, the blank of the material is put on the clamping plate 4, the upper die shoe 1 is pressed down by the hydraulic machine, the upper die shoe 1 is lowered along the guide column 8, the clamping part 2 pre-presses the blank of the material on the clamping plate 4, the material is controlled to be pushed, as the upper die shoe 1 continues to descend, the upper die shoe 1 presses the clamping plate 4 and the hydraulic jack, the hydraulic jack is retracted, finally the upper die shoe 1 and the lower die shoe 3 complete the die closing, the drawing forming of the part is completed, then the upper die shoe 1 is lifted by the hydraulic machine, and the operator can take out the part.
[0050] Obviously, the above embodiments are only examples for clearly illustrating, not limiting the embodiments. Other different forms of changes or variations can be made by those skilled in the art on the basis of the above description. All the embodiments do not need to be exhausted here. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.
Claims
1. A wing skin stretch die characterized by, The utility model relates to a moulding device for processing the first and second processing surfaces of a workpiece, comprising, an upper moulding bed provided with clamping portions on opposite sides in a direction; a lower moulding bed provided opposite to the upper moulding bed; a material clamping plate provided on opposite sides of the lower moulding bed and provided opposite to the clamping portions in the direction of movement of the upper moulding bed, the material clamping plate being movably connected to the lower moulding bed and being arranged to be movable in the direction of movement of the upper moulding bed; a driving assembly for driving the material clamping plate to move at the same speed as the upper moulding bed.
2. A die for stretch forming a wing skin according to claim 1, wherein The upper moulding bed is provided with a first processing surface, and the upper moulding bed is provided with a second processing surface, the first processing surface being provided opposite to the second processing surface, and the clamping portions being located on opposite sides of the first processing surface, and the material clamping plate being located on opposite sides of the second processing surface.
3. A die for stretch forming a wing skin according to claim 2, wherein The height of the first processing surface is higher than that of the clamping portions.
4. A die for stretch forming a wing skin according to claim 1, wherein The driving assembly comprises a hydraulic jack, and the hydraulic jack pushes the material clamping plate in the direction of movement of the upper moulding bed.
5. A die for stretch forming a wing skin according to claim 4, wherein Further comprising a guide column extending in the direction of movement of the upper moulding bed, the guide column passing through a guide hole of the material clamping plate.
6. A die for stretch forming a wing skin according to claim 4, wherein The upper moulding bed is provided with a guide sleeve, and the guide sleeve is sleeved on the guide column.
7. A stretch die for a wing skin according to claim 4, wherein Further comprising a base plate, the lower moulding bed and the guide column being fixedly provided on the base plate, and the base plate being located on one side of the material clamping plate relative to the upper moulding bed.
8. A stretch die for a wing skin according to claim 7, wherein The base plate is provided with an avoiding hole, and the hydraulic jack passes through the avoiding hole.
9. A stretch forming die for a wing skin according to claim 1, wherein The upper moulding bed is provided with an upper cover plate, and the upper cover plate is connected with a top column of a top cylinder of a hydraulic machine.
10. A die for stretch forming a wing skin according to claim 1, wherein The material clamping plate is arranged in a ring structure, and the material clamping plate horizontally surrounds the lower moulding bed.