Cambered surface titanium mesh forming die
Through the design of the arc-surface titanium mesh forming mold, the problem of forming mesh-shaped titanium alloy reflectors is solved, high-quality parabolic molding is achieved, preventing rebound deformation, and improving production efficiency and finished product quality.
Patent Information
- Application Number
- CN202421524944.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The prior art is difficult to efficiently mold the mesh-shaped titanium alloy radar reflector as a parabolic surface, and the titanium mesh is prone to rebound and deform during the molding process, resulting in low quality of the finished product.
Arc titanium mesh forming molds, including upper mold, bottom mold and elastic parts, are used to control the clamping force and clamping speed to achieve rough molding and fine molding of the titanium mesh. The elastic parts are used to reduce the clamping force, adjust the clamping speed and distance to prevent rebound and deformation.
It improves the quality of titanium mesh molding, reduces rebound deformation, improves the stability and production efficiency of the finished product, and reduces production costs.
Smart Images
Figure CN223185331U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reticular titanium alloy processing, in particular to a forming die for an arc-shaped titanium mesh. Background Art
[0002] For the reflectors of traditional radar antennas, steel was used in the first generation, and lightweight aluminum alloy was used in the second generation. Aluminum alloy has a fatal defect that it is very easy to corrode in the sea breeze with a high salt content by the sea. If the reflector is corroded, the accuracy of the antenna reflection and the detection distance will be greatly reduced. Later, a weather-resistant and anti-corrosive coating was applied to the surface of the aluminum alloy. However, practical use has proved that the anti-corrosive effect of this method is not ideal enough. Then, through practice and experiments, people gradually found that titanium alloy is an ideal material that can replace aluminum alloy. The tensile strength of aluminum alloy (the most important performance index in material mechanics performance) is 140 MPa, while that of titanium alloy can reach about 540 MPa. That is, the strength of the titanium plate with the same thickness is 3.8 times that of the aluminum plate. Moreover, the corrosion resistance of the titanium alloy plate is 20 times that of the aluminum plate. The titanium alloy plate is also a material with extremely excellent fatigue resistance among the currently known metals. Therefore, titanium alloy is a very ideal material for radar antenna reflectors.
[0003] However, the radar reflectors used in the sea area cannot be directly made of a solid plate without mesh holes. Because the sea breeze is very strong and the reflector is a paraboloid, it is very easy to catch the wind. If a solid plate without mesh holes is used, the reflector will not be able to rotate and work normally in the strong wind. Therefore, the shape of the reflector must be grid-shaped to meet the needs of normal rotation and work in the strong wind. The grid-shaped titanium alloy reflector can solve the two major problems of the corrosion of the reflector and the normal rotation and work in the strong wind at the same time. However, correspondingly, a new problem has arisen, that is, how to form the grid-shaped titanium alloy radar reflector into a paraboloid.
[0004] Currently, when processing a radar reflector, it is necessary to first build the framework of the radar, install the titanium mesh on the framework, then manually climb onto the framework and carry out hot melting and forming on the titanium mesh to form a semi-finished mesh. Then, manually use tools to calibrate the bending degree of the semi-finished mesh, and finally form a parabolic titanium mesh that meets the design requirements. This processing method requires a relatively high labor cost, and the quality of the final product is also relatively low. The traditional arc-shaped plate processing die is not suitable for processing grid-shaped products. Because after the grid-shaped products are processed into a curved surface and formed, the dimensions are extremely unstable and very easy to rebound and deform. Especially titanium alloy is more likely to rebound and deform, and such deformation is not allowed for the reflector. Therefore, there is an urgent need for an arc-shaped titanium mesh forming die that can facilitate the forming of a parabolic grid-shaped titanium alloy reflector, prevent the titanium mesh from rebounding and deforming, and improve the quality of the finished product. Summary of the Utility Model
[0005] The purpose of the present utility model is to provide a forming die for an arc-shaped titanium mesh, so as to solve the problems existing in the above-mentioned prior art, facilitate the forming of a parabolic mesh-shaped titanium alloy reflector, prevent the titanium mesh from springback deformation, and improve the quality of the finished product.
[0006] To achieve the above object, the present utility model provides the following solutions:
[0007] The present utility model provides a forming die for an arc-shaped titanium mesh, including: an upper die, a bottom die and an elastic member. The elastic member is detachably disposed between the upper die and the bottom die. The die surfaces of the upper die and the bottom die are both arc-shaped. When the elastic member is disposed between the upper die and the bottom die, the elastic member is used to weaken the closing force when the upper die and the bottom die are closed. The upper die and the bottom die can be closed to roughly form the titanium mesh and form a semi-finished product. When the elastic member is not disposed between the upper die and the bottom die, the two upper die and the bottom die can be closed to finely form the semi-finished product and form a finished product.
[0008] Preferably, the bottom die includes an intermediate die and a lower die. The upper die, the intermediate die and the lower die are arranged in sequence from top to bottom. The upper die surface and the lower die surface of the intermediate die are both arc-shaped. The elastic member is disposed between the upper die and the intermediate die. The upper die and the intermediate die can be closed to roughly form the titanium mesh and form a semi-finished product. At the same time, the intermediate die and the lower die can be closed to finely form another semi-finished product and form a finished product.
[0009] Preferably, it further includes a guiding member. The guiding member is fixedly connected to the lower die. The upper die and the intermediate die are both detachably and movably connected to the guiding member. The upper die and the intermediate die can both move vertically along the guiding member.
[0010] Preferably, the guiding member is a cylinder. One end of the guiding member is fixedly connected to the lower die, and the other end extends vertically upward from the lower die. Guiding holes are provided on both the upper die and the intermediate die. The positions of the guiding holes on the upper die and the intermediate die correspond to the position of the guiding member. The guiding member is slidably connected in the guiding holes of the upper die and the intermediate die.
[0011] Preferably, a plurality of guiding members are fixedly arranged in the circumferential direction of the lower die. A plurality of guiding holes corresponding to the positions of the guiding members are provided in the circumferential directions of both the upper die and the intermediate die.
[0012] Preferably, the elastic member is a high-temperature resistant spring. The high-temperature resistant spring is sleeved on the guiding member between the upper die and the intermediate die.
[0013] Preferably, the weight of the upper mold is not less than 400 kg, and the weight of the intermediate mold is not less than 460 kg.
[0014] The utility model has achieved the following technical effects compared with the prior art:
[0015] The arc-shaped titanium mesh forming die provided by the utility model can perform rough forming and precise forming on the titanium mesh. In the rough forming process, the elastic member between the upper mold and the bottom mold can control the closing force when the upper mold and the bottom mold are closed, and further adjust the closing speed of the upper mold and the bottom mold and the distance between the mold surfaces after closing, so that the titanium mesh has a suitable stretching deformation space and stretching deformation time, realizing thermal creep forming. The quality of the formed semi-finished product is high and it is not easy to rebound and deform. In the precise forming process, the semi-finished product can be tightly pressed on the bottom mold by the upper mold and be fixed in shape after cooling, thereby obtaining a finished product with high quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0017] Figure 1 It is a front view when the upper mold and the lower mold of the arc-shaped titanium mesh forming die provided by the present utility model are combined;
[0018] Figure 2 It is a front view when the upper mold, the intermediate mold and the lower mold of the arc-shaped titanium mesh forming die provided by the present utility model are combined;
[0019] In the figure: 1 - upper mold, 2 - intermediate mold, 3 - lower mold, 4 - elastic member, 5 - guiding member. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0021] The purpose of the present utility model is to provide an arc-shaped titanium mesh forming die to solve the problems existing in the prior art, which can facilitate the forming of a parabolic grid-shaped titanium alloy reflector, prevent the titanium mesh from rebounding and deforming, and improve the quality of the finished product.
[0022] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Embodiment 1
[0024] This embodiment provides a forming die for an arc-shaped titanium mesh. As Figure 1-2 shown, it includes: an upper die 1, a bottom die, and an elastic member 4. The elastic member 4 is detachably arranged between the upper die 1 and the bottom die. The die surfaces of the upper die 1 and the bottom die are both arc-shaped. When the elastic member 4 is arranged between the upper die 1 and the bottom die, the elastic member 4 is used to weaken the clamping force when the upper die 1 and the bottom die are clamped together, and the upper die 1 and the bottom die can be clamped together to roughly form the titanium mesh and form a semi-finished product; when the elastic member 4 is not arranged between the upper die 1 and the bottom die, the upper die 1 and the bottom die can be clamped together to finely form the semi-finished product and form a finished product.
[0025] The forming die for an arc-shaped titanium mesh provided in this embodiment can be used for the forming of a radar reflector. During the production process, first place the titanium mesh between the upper die 1 provided with the elastic member 4 and the bottom die. The upper die 1 and the bottom die can be clamped together in the furnace, compressing the elastic member 4, thereby roughly forming the titanium mesh and forming a semi-finished product. Then remove the elastic member 4, and the upper die 1 and the bottom die are clamped together in the furnace to finely form the titanium mesh and form a finished product. In the rough forming process, the elastic member 4 between the upper die 1 and the bottom die can control the clamping force when the upper die 1 and the bottom die are clamped together, and further adjust the clamping speed of the upper die 1 and the bottom die and the distance between the die surfaces after clamping, so that the titanium mesh has a suitable extension deformation space and extension deformation time, realizing hot creep forming. The quality of the formed semi-finished product is relatively high and it is not easy to rebound and deform. In the fine forming process, the semi-finished product can be tightly pressed by the upper die 1 on the bottom die and shaped, thereby obtaining a high-quality finished product. Among them, when forming a radar reflector, the die surfaces of the upper die 1 and the bottom die are both set as parabolic surfaces.
[0026] In a preferred embodiment of the first embodiment, the bottom mold includes an intermediate mold 2 and a lower mold 3. The upper mold 1, the intermediate mold 2, and the lower mold 3 are arranged in sequence from top to bottom. The upper mold surface and the lower mold surface of the intermediate mold 2 are both arc surfaces. The elastic member 4 is arranged between the upper mold 1 and the intermediate mold 2. The upper mold 1 and the intermediate mold 2 can be closed to perform rough forming on the titanium mesh and form a semi-finished product. At the same time, the intermediate mold 2 and the lower mold 3 can be closed to perform fine forming on another semi-finished product and form a finished product. The processing process using the upper mold 1, the intermediate mold 2, and the lower mold 3 is as follows: When processing the first titanium mesh, first combine the upper mold 1 and the lower mold 3, and arrange the elastic member 4 between the upper mold 1 and the lower mold 3. The upper mold 1 and the lower mold 3 are closed in the furnace to process the first titanium mesh and form the first semi-finished product. Then, arrange the upper mold 1, the intermediate mold 2, and the lower mold 3 in sequence from top to bottom, and arrange the elastic member 4 between the upper mold 1 and the intermediate mold 2. At this time, place the second titanium mesh between the upper mold 1 and the intermediate mold 2, place the first semi-finished product between the lower mold 3 and the intermediate mold 2, and jointly close the mold in the furnace to simultaneously complete the rough forming of the second titanium mesh and the fine forming of the first semi-finished product. Then, take the third titanium mesh and the second semi-finished product for processing, and repeat the process of entering the furnace. In this way, one semi-finished product and one finished product can be completed in one furnace entry. Compared with the method of only processing one finished product or one semi-finished product at a time, the method of using the upper mold 1, the intermediate mold 2, and the lower mold 3 for processing improves the production speed, reduces the number of furnace entries, reduces the furnace opening time, and saves production costs. Among them, when forming the radar reflector, the upper mold surface and the lower mold surface of the intermediate mold 2 are both set as parabolic surfaces.
[0027] In a preferred embodiment of the first embodiment, a guiding member 5 is further included. The guiding member 5 is fixedly connected to the lower mold 3. The upper mold 1 and the intermediate mold 2 are both detachably and movably connected to the guiding member 5. The upper mold 1 and the intermediate mold 2 can both move vertically along the guiding member 5. The guiding member 5 can control the moving directions of the upper mold 1 and the intermediate mold 2, so that the positions of the mold surfaces can correspond during mold closing.
[0028] In a preferred embodiment of the first embodiment, the guide member 5 is a cylinder. One end of the guide member 5 is fixedly connected to the lower die 3, and the other end extends vertically upward from the lower die 3. Guide holes are provided on both the upper die 1 and the intermediate die 2, and the positions of the guide holes on the upper die 1 and the intermediate die 2 correspond to the position of the guide member 5. The guide member 5 is slidably connected in the guide holes of the upper die 1 and the intermediate die 2. The cylindrical guide member 5 being slidably connected in the guide hole facilitates the sliding of the upper die 1 and the intermediate die 2 in the vertical direction, and at the same time, the guide holes can be used to limit the upper die 1 and the intermediate die 2 in the horizontal direction, so that the die surfaces can be accurately aligned during mold closing; moreover, when a titanium mesh or semi-finished product needs to be placed between the two dies, or when the semi-finished product or finished product needs to be taken out from between the two dies, the upper die 1 or the intermediate die 2 needs to be disassembled. At this time, only a device such as a hoisting machine is used to move the upper die 1 or the intermediate die 2 upward along the guide member 5 to disengage the guide hole and the guide member 5, and then it can be quickly disassembled, which is convenient for discharging the titanium mesh or semi-finished product, and taking out the semi-finished product or finished product.
[0029] In a preferred embodiment of the first embodiment, a plurality of guide members 5 are fixedly provided in the circumferential direction of the lower die 3, and a plurality of guide holes corresponding to the positions of the guide members 5 are provided in the circumferential directions of both the upper die 1 and the intermediate die 2. The plurality of limiting columns in the circumferential direction of the lower die 3 are slidably connected to the plurality of limiting holes on the upper die 1 and the intermediate die 2, which can make the upper die 1 and the intermediate die 2 move more stably during mold closing.
[0030] In a preferred embodiment of the first embodiment, the elastic member 4 is a high-temperature resistant spring, and the high-temperature resistant spring is sleeved on the guide member 5 between the upper die 1 and the intermediate die 2. The high-temperature resistant spring can have good deformation ability in the high-temperature environment in the furnace. Among them, the wire diameter of the spring is preferably φ6, the outer diameter of the spring is preferably φ3, and the temperature that can be tolerated is not less than 620 °C.
[0031] In a preferred embodiment of the first embodiment, the weight of the upper die 1 is not less than 400 kg, and the weight of the intermediate die 2 is not less than 460 kg.
[0032] Embodiment Two
[0033] This embodiment provides an application example of processing a titanium mesh using the arc-shaped titanium mesh forming die in the first embodiment:
[0034] Shape requirements for the finished product: Parabolic mesh.
[0035] Dimension requirements: 1700×1000×300 (parabolic chord height)×1 (parabolic material thickness).
[0036] Production process:
[0037] (1) Lay the titanium mesh flat on a 2-mm-thick steel plate and heat it at a rate not exceeding 10 °C / min to 550 °C ± 10 °C, then hold for 2 h and cool in the furnace. This step can remove the cold-forming internal stress existing in the titanium mesh in the as-supplied state and play a role in softening the titanium mesh.
[0038] (2) Place a raw material titanium mesh between the lower die 3 and the upper die 1, install an elastic member between the upper die 1 and the lower die 3, and send the die with the raw material titanium mesh into the furnace. During the mold closing and forming process, heat it at a rate not exceeding 3 °C / min to 550 °C ± 10 °C, hold for 2 h, and then cool in the furnace to form a semi-finished product. The slower heating rate can extend the creep time of the titanium mesh at high temperature.
[0039] (3) Cut the semi-finished product to make it conform to the designed shape. Then, arrange the upper die 1, the intermediate die 2, and the lower die 3 from top to bottom in sequence, and set an elastic member between the upper die 1 and the intermediate die 2. Place another raw material titanium mesh on the intermediate die 2, place the cut semi-finished product on the lower die 3, then put it into the furnace, heat it at a rate not exceeding 3 °C / min to 550 °C ± 10 °C, hold for 2 h, and then cool in the furnace.
[0040] (4) Repeat step (3) until all the raw material titanium mesh is consumed.
[0041] In the present utility model, specific examples are used to illustrate the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.
Claims
1. A curved titanium mesh forming die, characterized by: include: An upper mold, a bottom mold and an elastic member, wherein the elastic member is detachably arranged between the upper mold and the bottom mold, and the mold surfaces of the upper mold and the bottom mold are both arc surfaces. When the elastic member is arranged between the upper mold and the bottom mold, the elastic member is used to weaken the clamping force when the upper mold and the bottom mold are clamped. The upper mold and the bottom mold can be clamped to roughly form the titanium mesh and form a semi-finished product; when the elastic member is not arranged between the upper mold and the bottom mold, the two upper molds and the bottom mold can be clamped to finely form the semi-finished product and form a finished product.
2. The arc-surface titanium mesh forming die according to claim 1, characterized in that: The bottom mold includes an intermediate mold and a lower mold. The upper mold, the intermediate mold and the lower mold are arranged in sequence from top to bottom. The upper mold surface and the lower mold surface of the intermediate mold are both arc surfaces. The elastic member is arranged between the upper mold and the intermediate mold. The upper mold and the intermediate mold can be combined to roughly shape the titanium mesh and form a semi-finished product. At the same time, the intermediate mold and the lower mold can be combined to finely shape another semi-finished product and form a finished product.
3. The arc-surface titanium mesh forming die according to claim 2, characterized in that: It also includes a guide member, which is fixedly connected to the lower mold. The upper mold and the middle mold are both detachably connected to the guide member, and the upper mold and the middle mold can both move in the vertical direction along the guide member.
4. The arc-surface titanium mesh forming die according to claim 3, characterized in that: The guide member is a column, one end of which is fixedly connected to the lower mold, and the other end extends vertically upward from the lower mold. Guide holes are provided on the upper mold and the middle mold. The positions of the guide holes on the upper mold and the middle mold correspond to the position of the guide member, and the guide member is slidably connected to the guide holes of the upper mold and the middle mold.
5. The arc-surface titanium mesh forming die according to claim 4, characterized in that: A plurality of guide members are fixedly provided on the circumference of the lower die, and a plurality of guide holes corresponding to the positions of the guide members are provided on the circumference of both the upper die and the middle die.
6. The arc-surface titanium mesh forming die according to claim 4, characterized in that: The elastic member is a high temperature resistant spring, and the high temperature resistant spring is sleeved on the guide member between the upper die and the middle die.
7. The arc-surface titanium mesh forming die according to claim 2, characterized in that: The weight of the upper mold is not less than 400 kg, and the weight of the middle mold is not less than 460 kg.