Plastic forming die for empennage part and using method of plastic forming die

Abstract

The empennage part plastic forming die comprises a lower rotating disc and an upper rotating disc, a rotating driving part is fixedly installed at the center of the lower rotating disc and the center of the upper rotating disc, a supporting frame is arranged on the right side of the lower rotating disc and the right side of the upper rotating disc, and a hydraulic cylinder is fixedly installed at the top of the supporting frame; a supporting plate assembly is slidably connected into the supporting frame, and a feeding assembly is fixedly installed on the rear side of the supporting frame. The die assemblies can be sequentially transferred to the supporting frame through rotation of the lower rotary disc and the upper rotary disc, then the output end of a first air cylinder extends to drive a sliding plate to move leftwards, a second motor drives a threaded rod to rotate to drive a T-shaped plate and material pushing rods to move forwards, and then the output end of the first air cylinder retracts to drive the two material pushing rods to move rightwards. Therefore, the upper die base is pushed into the receding groove, and the lower die base is pushed into the first arch-shaped plate. Or the left die holder and the right die holder are pushed into the arched plate I together; the efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of tail wing part processing, in particular to a tail wing part plastic forming die and a use method thereof. Background Art

[0002] The tail of the flying object can control the airflow during its flight, helping the flying object to maintain stability during flight, thereby improving accuracy and, to a certain extent, improving the accuracy and range of shooting; at the same time, the tail of the flying object can also reduce the kinetic energy loss caused by air friction and penetrate the target more effectively. Figure 1 For example, the tail wing of an aircraft has long been formed by mechanical processing, which has low material utilization, long process flow and high cost.

[0003] Plastic forming technology can generally achieve near-net forming with high material utilization. Therefore, for the tail wing of flight parts, it is urgent to develop new technologies suitable for its plastic forming. In the traditional plastic forming process of aluminum alloy and magnesium alloy, multiple heat treatment processes are usually used to improve the mechanical properties of the formed parts to meet the use requirements. While increasing the process flow, the stress changes during the heat treatment process will cause the size and precision of the formed parts to change, and it is necessary to increase the process accordingly for adjustment, which invisibly increases the process flow and causes the production cost to rise. In addition, the tail wing parts have a complex shape, especially the tail, which has a large aspect ratio. It is difficult to fill the material during the plastic forming process. It is easily affected by many factors such as mold structure, surface roughness, external force direction during the forming process, forming method, lubrication conditions, etc., and will further affect its streamline direction, grain size, multi-phase precipitation and strengthening, and texture orientation, etc. Therefore, it ultimately affects its mechanical properties.

[0004] In short, when using the existing solution to manufacture the tail wing parts of flight parts, multiple heat treatments and manual shaping are required, which cannot meet the requirements of high precision, high performance and high efficiency, and seriously affects its service performance. More importantly, the existing solution is difficult to smoothly achieve short process and low-cost plastic forming of tail wing parts. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a tail wing part plastic forming die and a method of using the same, which at least have the advantages of high processing efficiency and high precision.

[0006] A plastic forming mold for a tail wing part comprises a lower turntable and an upper turntable, wherein a rotating driving member is fixedly installed at the center of the lower turntable and the upper turntable, a step groove 1 is penetrated by an array on the surface of the lower turntable, and a step groove 2 is penetrated by an array on the surface of the upper turntable, wherein the step groove 1 corresponds to the step groove 2 one to one, and the step groove 2 is located directly above the step groove 1; a support frame is arranged on the right side of the lower turntable and the upper turntable, a hydraulic cylinder is fixedly installed on the top of the support frame, a support plate assembly is slidably connected in the support frame, an output end of the hydraulic cylinder is slidably connected to the support plate assembly, a loading assembly is fixedly installed on the rear side of the support frame, and a unloading assembly is slidably connected to the support frame and the support plate assembly; a mold assembly is placed on the lower turntable and the upper turntable.

[0007] Preferably, the rotating drive member includes a driving shaft passing through and fixed at the center of the lower turntable and the upper turntable, a reducer is fixedly installed at the bottom end of the driving shaft, and a motor is fixedly installed at the input end of the reducer; the support frame includes a base, the base is attached to the right side of the lower turntable, four groups of support rods are fixedly installed on the top of the base, the four groups of support rods are distributed in a matrix, top plates are fixedly installed on the top ends of the four support rods, a limiting ring is fixedly installed in the middle of each support rod, and an arch plate is fixedly installed on the upper surface of the left half of the base.

[0008] Preferably, the support plate assembly includes a support plate body slidably connected to four support rods, the support plate body is located at the lower side of the limit ring, an L-shaped support arm is fixedly installed at the top center of the support plate body, the output end of the hydraulic cylinder passes through the horizontal part of the L-shaped support arm for sliding connection, a punch is fixedly installed at the output end of the hydraulic cylinder, an avoidance groove is penetrated through the upper surface of the left half of the support plate body, an arch plate 2 is fixedly installed on the upper surface of the left half of the support plate body, a guide groove is penetrated through the upper surface of the right half of the support plate body, and an installation groove is penetrated through the rear side of the vertical part of the L-shaped support arm.

[0009] Preferably, the loading assembly includes a side plate fixedly installed on the rear side of the support frame, a cylinder 1 is fixedly installed on the rear side of the side plate, a sliding plate is fixedly installed on the output end of the cylinder 1, the sliding plate is slidably connected to the rear side of the side plate, two cross arms are fixedly installed on the left side of the sliding plate, a motor 2 is fixedly installed on the rear side of the sliding plate, a threaded rod is fixedly installed on the output end of the motor 2, a T-shaped plate is threadedly connected to the threaded rod, a threaded hole is provided at the right end of the T-shaped plate, two pushing rods are fixedly installed on the front side of the left end of the T-shaped plate, the two pushing rods are respectively penetrated and slidably connected to the two cross arms, and the two pushing rods are respectively located on the upper side of the lower turntable and the upper turntable.

[0010] Preferably, the unloading assembly includes a sliding seat fixedly mounted on the upper surface of the rear half of the base, an L-shaped plate is slidably connected to the sliding seat, the vertical part of the L-shaped plate passes through and is slidably connected in a guide groove, a sliding block is slidably connected to the right side of the L-shaped plate, a cylinder 2 is fixedly mounted on the right side of the slider, the cylinder 2 is fixedly mounted on the bottom of the support plate body, the vertical part of the L-shaped plate is slidably connected to a unloading plate, and the unloading plate passes through and is slidably connected in the mounting groove.

[0011] Preferably, the mold assembly includes a lower mold base and an upper mold base, and the lower mold base and the upper mold base are respectively placed in step groove one and step groove two, the top array of the lower mold base is provided with an embedding groove, and an embedding block is slidably connected in the embedding groove, and a boss is fixedly installed on the top of the embedding block close to the center of the lower mold base, and a accommodating groove one is provided at the center of the top of the lower mold base, and a lower tail wing groove is provided in the top array of the lower mold base; a docking groove is provided in the bottom array of the upper mold base, and the docking groove corresponds one-to-one with the embedding block, and an upper tail wing groove is provided in the bottom array of the upper mold base, and the upper tail wing groove corresponds one-to-one with the lower tail wing groove; an extrusion pusher is provided between the embedding block and the upper mold base.

[0012] Preferably, the extrusion pusher comprises an inclined rod fixedly mounted on the top of the insert, an inclined groove is formed through the top array of the upper die base, the inclined groove is connected to the docking groove, and the inclined rod is inserted into the inclined groove.

[0013] Preferably, the extrusion pusher comprises an extrusion ring fixedly mounted on the bottom of the upper die base, the inner diameter of the extrusion ring gradually decreases from top to bottom, and the side of the insert away from the center of the lower die base is attached to the inner wall of the extrusion ring.

[0014] Preferably, the mold assembly includes a left mold base and a right mold base, and two extension plates are fixedly installed on opposite sides of the left mold base and the right mold base, and the two extension plates are distributed on the left and right, and the left mold base and the right mold base are placed in a stepped groove one; the left mold base and the right mold base are provided with an accommodating groove two and an accommodating groove three on opposite sides of the left mold base, and the accommodating groove three is connected at the center of the accommodating groove two, and the left mold base and the right mold base are provided with side tail grooves in an array on the inner wall of the accommodating groove two, and the extension plates are provided with bolt holes in an array.

[0015] The method for using the plastic forming die of the tail wing part in the present invention comprises the following steps: S1. According to the specific size of the tail wing parts, calculate the corresponding size of the blank, and use the ordinary die forging method to process it into a cylindrical blank with one end thicker and the other thinner; S2, subjecting the obtained billet to a solid solution treatment, wherein the temperature of the aluminum alloy is controlled between 350-650°C, the temperature of the magnesium alloy is controlled between 250-550°C, and the holding time is between 1-24 hours; S3, placing the solution treated blank in cold water or liquid nitrogen for 1-10 minutes for quenching; S4, the quenched blank is kept at 60-150°C for 2-20 hours for aging treatment; S5. The aging-treated blanks are heated to a predetermined temperature, between 350°C and 650°C for aluminum alloy and between 250°C and 550°C for magnesium alloy, and placed in the first receiving tank or the third receiving tank for tail fin forming; S6. Place the lower die base in step groove one, and place the upper die base in step groove two; or fix the left die base and the right die base together by bolts, and place the left die base and the right die base vertically in step groove one; drive the drive shaft to rotate through the cooperation of motor one and reducer, drive the lower turntable and the upper turntable to rotate, so that step groove one is opposite to arch plate one, and step groove two is opposite to arch plate two, and then extend the output end of cylinder one to drive the sliding plate to move to the left, drive the threaded rod to rotate through motor two, drive the T-shaped plate and the push rod to move forward, and then contract the output end of cylinder one, and the two push rods move to the right, so as to push the upper die base into the avoidance groove and the lower die base into arch plate one; or push the left die base and the right die base into arch plate one together; S7, the output end of the hydraulic cylinder is extended to make the upper die seat approach the lower die seat, and then the output end of the hydraulic cylinder continues to extend to apply pressure to deform the blank and form a tail fin; or the output end of the hydraulic cylinder is extended, and the punch is inserted into the second receiving groove to extrude the blank to deform the blank and form a tail fin; S8. After the blank is formed, the output end of the hydraulic cylinder contracts, and the punch pulls the L-shaped support arm and the support plate body upward to separate the upper die base from the lower die base; or the output end of the hydraulic cylinder and the punch are pulled out of the second accommodating groove; then the output end of the second cylinder is extended to drive the L-shaped plate to move to the left, and the horizontal part of the L-shaped plate and the blanking plate move forward, so that the upper die base moves into the second step groove, and the lower die base moves into the first step groove; or the left die base and the right die base are pushed into the first step groove together.

[0016] Beneficial effect: By rotating the lower turntable and the upper turntable, the mold assembly can be transferred to the support frame in sequence, and then the output end of the cylinder is extended to drive the sliding plate to move to the left, and the threaded rod is driven to rotate by the motor 2 to drive the T-shaped plate and the push rod to move forward, and then the output end of the cylinder is contracted, and the two push rods move to the right, thereby pushing the upper mold base into the avoidance groove and the lower mold base into the arch plate 1; or the left mold base and the right mold base are pushed into the arch plate 1 together; the output end of the hydraulic cylinder is contracted, and the L-shaped support arm is pulled upward by the punch. and the support plate body, so that the upper die seat is separated from the lower die seat; or the output end of the hydraulic cylinder and the punch are pulled out from the second receiving groove; then the L-shaped plate is driven to move to the left by the extension of the output end of the second cylinder, and the horizontal part of the L-shaped plate and the blanking plate move forward, so that the upper die seat moves into the second step groove, and the lower die seat moves into the first step groove; or the left die seat and the right die seat are pushed into the first step groove together; the whole process is efficient and easy to operate; in addition, by designing the mold assembly into an upper and lower structure or a left and right structure, the operation is convenient and the precision is high when the blank is extruded. More importantly, the scheme of the present invention successfully realizes the short-process and low-cost plastic forming of tail wing parts, which can be greatly shortened and the cost can be significantly reduced compared with the existing scheme (compared with the traditional machining method, the cost of tail wing parts of the same specification can be reduced by about 35%).

[0017] The present invention also facilitates the optimization and combination of processes such as solid solution, quenching, aging, plasticity, and superplastic forming through an optimized combination of specific mold structures and process control. Based on multi-scale microstructure regulation, multi-process and mold collaborative forming, it is possible to form wing-type parts with good mechanical properties and that meet high-precision requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a tail wing part in the prior art; Figure 2 Schematic diagram of the three-dimensional structure of the plastic forming mold of the tail wing part in the embodiment; Figure 3 It is a three-dimensional structural schematic diagram of an upper turntable, a lower turntable and a rotating driving member of a plastic forming die for a tail wing part in an embodiment; Figure 4 It is a three-dimensional structural schematic diagram of the support frame, hydraulic cylinder, support plate assembly and blanking assembly of the plastic forming mold of the tail wing part in the embodiment; Figure 5 It is a schematic diagram of the three-dimensional structure of the feeding assembly of the plastic forming mold of the tail wing part in the embodiment; Figure 6 It is a schematic diagram of the three-dimensional structure of the first embodiment of the plastic forming mold of the tail wing part in the embodiment; Figure 7 It is a bottom-up stereoscopic structural schematic diagram of the first embodiment of the plastic forming mold for the tail wing part in the embodiment; Figure 8 Schematic diagram of the insert block structure in the first embodiment of the plastic forming die for the tail wing part in the embodiment; Fig. 9 It is a schematic diagram of the three-dimensional structure of the second embodiment of the plastic forming mold of the tail wing part in the embodiment; Fig.10 It is a bottom-up stereoscopic structural schematic diagram of a second embodiment of the plastic forming die for the tail wing part in the embodiment; Fig.11 Schematic diagram of the insert block structure in the second embodiment of the plastic forming die for the tail wing part in the embodiment; Fig.12 It is a schematic diagram of the three-dimensional structure of the embodiment 3 of the plastic forming mold of the tail wing part in the embodiment.

[0019] In the figure: 100, lower turntable; 200, upper turntable; 300, rotating drive member; 400, support frame; 500, hydraulic cylinder; 600, support plate assembly; 700, loading assembly; 800, unloading assembly; 900, mold assembly; 101, step groove 1; 201, step groove 2; 301, drive shaft; 302, reducer; 303, motor 1; 401, base; 402, support rod; 403, top plate; 404, limit ring; 405, arch plate 1; 601, support plate body; 602, L-shaped support arm; 603, punch; 604, avoidance groove; 605, arch plate 2; 606, guide groove; 607, mounting groove; 701, side plate; 702, cylinder 1; 703, sliding plate; 704, cross arm; 705, motor 2; 706, threaded rod; 707, T-shaped plate; 708, push rod; 801, slide seat; 802, L-shaped plate; 803, slider; 804, cylinder 2; 805, blanking plate; 901, lower die base; 902, upper die base; 903, embedded groove; 904, embedded block; 905, boss; 906, receiving groove one; 907, lower tail groove; 908, docking groove; 909, upper tail groove; 910, tilting rod; 911, tilting groove; 912, extrusion ring; 913, left die base; 914, right die base; 915, extension plate; 916, receiving groove two; 917, receiving groove three; 918, side tail groove; 919, bolt hole. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 2A plastic forming mold for a tail wing part includes a lower turntable 100 and an upper turntable 200. A rotating driving member 300 is fixedly installed at the center of the lower turntable 100 and the upper turntable 200. A step groove 101 is arranged in an array on the surface of the lower turntable 100, and a step groove 201 is arranged in an array on the surface of the upper turntable 200. The step groove 101 corresponds to the step groove 201 one by one, and the step groove 201 is located directly above the step groove 101. In this embodiment, the number of the step groove 101 and the step groove 201 are both three. A support frame 400 is arranged on the right side of the lower turntable 100 and the upper turntable 200, a hydraulic cylinder 500 is fixedly installed on the top of the support frame 400, a pallet assembly 600 is slidably connected inside the support frame 400, the output end of the hydraulic cylinder 500 is slidably connected to the pallet assembly 600, a loading assembly 700 is fixedly installed on the rear side of the support frame 400, and a unloading assembly 800 is slidably connected to the support frame 400 and the pallet assembly 600; a mold assembly 900 is placed on the lower turntable 100 and the upper turntable 200.

[0022] See also Figure 3 The rotating driving member 300 includes a driving shaft 301 which penetrates and is fixed at the center of the lower turntable 100 and the upper turntable 200. A reducer 302 is fixedly installed at the bottom end of the driving shaft 301, and a motor 1 303 is fixedly installed at the input end of the reducer 302. The driving shaft 301 is driven to rotate by the cooperation of the motor 1 303 and the reducer 302, thereby driving the lower turntable 100 and the upper turntable 200 to rotate.

[0023] See also Figure 4 The support frame 400 includes a base 401, which is attached to the right side of the lower turntable 100, and the top of the base 401 is flush with the bottom wall of the step groove 101. Four groups of support rods 402 are fixedly installed on the top of the base 401, and the four groups of support rods 402 are distributed in a matrix. A top plate 403 is fixedly installed on the top of the four support rods 402, and a limit ring 404 is fixedly installed in the middle of each support rod 402. An arch plate 1 405 is fixedly installed on the upper surface of the left half of the base 401. The hydraulic cylinder 500 is fixedly installed on the top of the top plate 403, and the output end of the hydraulic cylinder 500 passes through the top plate 403.

[0024] See also Figure 4 The support plate assembly 600 includes a support plate body 601 slidably connected to four support rods 402, and the support plate body 601 is located at the lower side of the limiting ring 404. Figure 2As shown, when the support plate body 601 is attached to the bottom of the limiting ring 404, the top of the support plate body 601 is flush with the bottom wall of the stepped groove 201. An L-shaped support arm 602 is fixedly installed at the center of the top of the support plate body 601, the output end of the hydraulic cylinder 500 is slidably connected to the horizontal part of the L-shaped support arm 602, and a punch 603 is fixedly installed at the output end of the hydraulic cylinder 500. A avoidance groove 604 is penetrated on the upper surface of the left half of the support plate body 601, and an arch plate 2 605 is fixedly installed on the upper surface of the left half of the support plate body 601. A guide groove 606 is penetrated on the upper surface of the right half of the support plate body 601, and a mounting groove 607 is penetrated on the rear side of the vertical part of the L-shaped support arm 602.

[0025] See also Figure 5 The loading assembly 700 includes a side plate 701 fixedly installed on the rear side of the support frame 400, a cylinder 1 702 is fixedly installed on the rear side of the side plate 701, a sliding plate 703 is fixedly installed on the output end of the cylinder 1 702, the sliding plate 703 is slidably connected to the rear side of the side plate 701, two cross arms 704 are fixedly installed on the left side of the sliding plate 703, a motor 2 705 is fixedly installed on the rear side of the sliding plate 703, a threaded rod 706 is fixedly installed on the output end of the motor 2 705, a T-shaped plate 707 is threadedly connected to the threaded rod 706, a threaded hole is provided at the right end of the T-shaped plate 707, two pushing rods 708 are fixedly installed on the front side of the left end of the T-shaped plate 707, the two pushing rods 708 are respectively penetrated and slidably connected to the two cross arms 704, and the two pushing rods 708 are respectively located on the upper side of the lower turntable 100 and the upper turntable 200. Thus, the threaded rod 706 is driven to rotate by the second motor 705, driving the T-shaped plate 707 and the push rod 708 to move forward and backward. When the push rod 708 moves backward and moves away from the top of the lower turntable 100 and the upper turntable 200, the push rod 708 can be prevented from colliding with the mold assembly 900 placed on the lower turntable 100 and the upper turntable 200. Figure 2 As shown, two notches can be opened on the left side of the side plate 701 to avoid the push rod 708. Therefore, when the sliding plate 703 moves to the right, the push rod 708 is driven to move to the right, and the push rod 708 can be moved into the notch. At this time, the two push rods 708 are respectively located above the base 401 and the support plate body 601.

[0026] See also Figure 4The blanking assembly 800 includes a slide 801 fixedly mounted on the upper surface of the rear half of the base 401, and an L-shaped plate 802 is slidably connected to the slide 801. The L-shaped plate 802 is used to guide the horizontal part of the slide 801. The vertical part of the L-shaped plate 802 penetrates and slides in the guide groove 606. A slider 803 is slidably connected to the right side of the L-shaped plate 802. A cylinder 2 804 is fixedly mounted on the right side of the slider 803. The cylinder 2 804 is fixedly mounted at the bottom of the support plate body 601, so that when the support plate body 601 moves up and down along the support rod 402, the cylinder 2 804 moves up and down synchronously, and the slider 803 slides along the vertical part of the L-shaped plate 802. A blanking plate 805 is slidably connected to the vertical part of the L-shaped plate 802, and the blanking plate 805 penetrates and slides in the installation groove 607. The blanking plate 805 moves up and down synchronously with the L-shaped support arm 602.

[0027] See also Figure 6-Figure 11 The mold assembly 900 includes a lower mold base 901 and an upper mold base 902, which are placed in the step groove 101 and the step groove 201 respectively. The top array of the lower mold base 901 is provided with an embedding groove 903, and the embedding block 904 is slidably connected in the embedding groove 903. The number of the embedding grooves 903 is nine. A boss 905 is fixedly installed on the top of the insert 904 near the center of the lower die seat 901, a receiving groove 906 is opened at the center of the top of the lower die seat 901, and a lower tail wing groove 907 is arranged in an array on the top of the lower die seat 901; a docking groove 908 is opened in an array at the bottom of the upper die seat 902, and the docking groove 908 corresponds to the insert 904 one by one, and an upper tail wing groove 909 is arranged in an array at the bottom of the upper die seat 902, and the upper tail wing groove 909 corresponds to the lower tail wing groove 907 one by one, and the upper tail wing groove 909 cooperates with the lower tail wing groove 907 to enclose a forming groove of the tail wing. An extrusion pusher is arranged between the insert 904 and the upper die seat 902.

[0028] When the upper die seat 902 is transferred from the stepped groove 201 to the top of the support plate body 601, the arch plate 2 605 limits the upper die seat 902; when the lower die seat 901 is transferred from the stepped groove 101 to the top of the base 401, the arch plate 1 405 limits the lower die seat 901. When the output end of the hydraulic cylinder 500 is extended, the support plate body 601 and the upper die seat 902 move downward under the action of gravity until the upper die seat 902 fits on the top of the lower die seat 901. The output end of the hydraulic cylinder 500 continues to extend, and the upper die seat 902 can be pushed downward by the punch 603.

[0029] See also Figure 6-Figure 8 , Embodiment 1: The extrusion pusher includes an inclined rod 910 fixedly mounted on the top of the insert 904, and an inclined groove 911 is formed through the top array of the upper die holder 902, and the inclined groove 911 is connected to the docking groove 908, and the inclined rod 910 is inserted into the inclined groove 911. When the upper die holder 902 moves downward, Using 7075 aluminum alloy as the billet, the dimensions of each part of the billet are determined after calculation based on the principle of equal volume; Place the blank in a constant temperature furnace, evacuate the furnace and flush with nitrogen, and place the blank for oxidation. The temperature is controlled at 580℃ and the holding time is 18 hours; After solution treatment, the 7075 aluminum alloy billet was taken out from the constant temperature furnace and immediately placed in cold water at a temperature of 25°C for 2 hours. Take the blank out of the cold water and put it into a constant temperature furnace, control the temperature at 120℃, and keep it warm for 12 hours; The mold assembly 900 and the blank are heated to the same temperature, 520°C. The blank is kept warm for 10 minutes to promote temperature uniformity. Then the output end of the hydraulic cylinder 500 is extended at a speed of 1 mm / s. Under the pressure of the output end of the hydraulic cylinder 500, the tilting rod 910 is inserted into the tilting groove 911, and as the upper mold base 902 continues to move downward, the upper mold base 902 is located at the inner wall of the tilting groove 911 to squeeze the tilting rod 910, driving the nine tilting rods 910 to gather toward the center of the lower mold base 901, thereby driving the nine inserts 904 to gather at the center of the lower mold base 901. The blank is forced to move in the opposite direction under the action of the inserts 904 and the bosses 905, and the forming is completed.

[0030] See also Figure 9-11 , Embodiment 2: The extrusion pusher includes an extrusion ring 912 fixedly mounted on the bottom of the upper die base 902 , the inner diameter of the extrusion ring 912 gradually decreases from top to bottom, and the side of the insert 904 away from the center of the lower die base 901 is attached to the inner wall of the extrusion ring 912 .

[0031] Taking 7A04 aluminum alloy as the billet, the dimensions of each part of the billet are determined after calculation based on the principle of equal volume; Place the blank in a constant temperature furnace, evacuate the furnace and flush with nitrogen, and place the blank for oxidation. The temperature is controlled at 560℃ and the holding time is 12 hours; After solution treatment, the 7A04 aluminum alloy billet was taken out from the constant temperature furnace and immediately placed in cold water at a temperature of 10°C for 1.5 hours. The blank is taken out of the cold water and placed in a constant temperature furnace, the temperature is controlled at 80°C, and the blank is kept warm for 10 hours; the mold assembly 900 and the blank are heated to the same temperature, 540°C, and the blank is kept warm for 10 minutes to promote temperature uniformity, and then the output end of the hydraulic cylinder 500 is extended at a speed of 10-4mm / s, which is superplastic forming. Under the pressure of the output end of the hydraulic cylinder 500, the insert 904 and the boss 905 are pushed inward by the inner wall of the extrusion ring 912, that is, they move inward along the radial direction. The blank is forced to move in the opposite direction under the action of the insert 904 and the boss 905, and the forming is completed.

[0032] See also Fig.12, Embodiment 3: The mold assembly 900 includes a left mold base 913 and a right mold base 914, and two extension plates 915 are fixedly installed on opposite sides of the left mold base 913 and the right mold base 914, and the two extension plates 915 are distributed on the left and right sides. The left mold base 913 and the right mold base 914 are placed in the stepped groove 101; the left mold base 913 and the right mold base 914 are provided with a second accommodating groove 916 and a third accommodating groove 917 on the opposite sides, and the third accommodating groove 917 is connected to the center of the second accommodating groove 916, and the left mold base 913 and the right mold base 914 are located on the inner wall of the second accommodating groove 916. Bolt holes 919 are arranged in an array on the extension plate 915.

[0033] Taking AM80 magnesium alloy as the billet, the dimensions of each part of the billet are determined after calculation based on the principle of equal volume; Place the blank in a constant temperature furnace, evacuate the furnace and flush with nitrogen, and place the blank for oxidation. The temperature is controlled at 420℃ and the holding time is 16 hours; The AM80 magnesium alloy billet after solution treatment was taken out from the constant temperature furnace and immediately placed in cold water at a temperature of 25°C for 1 hour. Take the blank out of the cold water and put it into a constant temperature furnace, control the temperature at 80°C, and keep it warm for 12 hours; The mold assembly 900 and the blank are heated to the same temperature, 460°C, and the blank is kept warm for 10 minutes to promote temperature uniformity; the left mold base 913 and the right mold base 914 are fixed together by bolts passing through the bolt holes 919, and the left mold base 913 and the right mold base 914 are placed vertically in the step groove 101. When the left mold base 913 and the right mold base 914 are transferred to the top of the base 401, the output end of the hydraulic cylinder 500 is extended, and the punch 603 is inserted into the receiving groove 2 916 and moves downward at a speed of 2 mm / s to complete the forming process; The method for using the plastic forming mold for the tail wing part in the embodiment comprises the following steps: S1. Calculate the corresponding size of the blank according to the specific size of the tail wing parts, and process the aluminum alloy or magnesium alloy into a cylindrical blank with one end thicker and the other thinner by ordinary die forging; S2, subjecting the obtained billet to a solid solution treatment, wherein the temperature of the aluminum alloy is controlled between 350-650°C, the temperature of the magnesium alloy is controlled between 250-550°C, and the holding time is between 1-24 hours; S3, placing the solution treated blank in cold water or liquid nitrogen for 1-10 minutes for quenching; S4, the quenched blank is kept at 60-150°C for 2-20 hours for aging treatment; S5. The blank after aging treatment is heated to a predetermined temperature according to the type of alloy, between 350-650°C for aluminum alloy and between 250-550°C for magnesium alloy, and is placed in the receiving tank 1 906 or the receiving tank 3 917 for tail fin forming; S6, place the lower die base 901 in the step groove 101, and place the upper die base 902 in the step groove 201; or fix the left die base 913 and the right die base 914 together by bolts, and place the left die base 913 and the right die base 914 vertically in the step groove 101; drive the drive shaft 301 to rotate through the motor 1 303 and the reducer 302, drive the lower turntable 100 and the upper turntable 200 to rotate, so that the step groove 101 is opposite to the arch plate 1 405, and the step groove 201 is opposite to the arch plate 1 405. The second plate 605 is opposite to each other, and then the output end of the cylinder 1 702 is extended, driving the sliding plate 703 to move to the left, and the threaded rod 706 is driven to rotate by the second motor 705, driving the T-shaped plate 707 and the push rod 708 to move forward, and then the output end of the cylinder 1 702 is contracted, and the two push rods 708 move to the right, thereby pushing the upper die base 902 into the avoidance groove 604, and pushing the lower die base 901 into the arched plate 1 405; or pushing the left die base 913 and the right die base 914 into the arched plate 1 405 together; S7, the output end of the hydraulic cylinder 500 is extended to make the upper die base 902 approach the lower die base 901, and then the output end of the hydraulic cylinder 500 continues to extend to apply pressure to deform the blank and form a tail fin; or the output end of the hydraulic cylinder 500 is extended, and the punch 603 is inserted into the second receiving groove 916 to extrude the blank to deform the blank and form a tail fin; S8. After the blank is formed, the output end of the hydraulic cylinder 500 contracts, and the punch 603 pulls the L-shaped arm 602 and the support plate body 601 upward to separate the upper die base 902 from the lower die base 901; or the output end of the hydraulic cylinder 500 and the punch 603 are pulled out from the accommodating groove 916; and then the output end of the cylinder 804 is extended to drive the L-shaped plate 802 to move to the left, and the horizontal part of the L-shaped plate 802 and the blanking plate 805 move forward, so that the upper die base 902 moves into the stepped groove 201, and the lower die base 901 moves into the stepped groove 1 101; or the left die base 913 and the right die base 914 are pushed into the stepped groove 1 101 together.

Claims

1. A tail wing component plastic forming die, comprising a lower turntable (100) and an upper turntable (200), characterized in that: A rotating driving member (300) is fixedly installed at the center of the lower turntable (100) and the upper turntable (200); a step groove 1 (101) is formed in an array on the surface of the lower turntable (100); a step groove 2 (201) is formed in an array on the surface of the upper turntable (200); the step groove 1 (101) corresponds to the step groove 2 (201) in a one-to-one manner; the step groove 2 (201) is located directly above the step groove 1 (101); a support frame (400) is provided on the right side of the lower turntable (100) and the upper turntable (200); ), a hydraulic cylinder (500) is fixedly mounted on the top of the support frame (400), a support plate assembly (600) is slidably connected inside the support frame (400), an output end of the hydraulic cylinder (500) is slidably connected to the support plate assembly (600), a loading assembly (700) is fixedly mounted on the rear side of the support frame (400), and a unloading assembly (800) is slidably connected to the support frame (400) and the support plate assembly (600); a mold assembly (900) is placed on the lower turntable (100) and the upper turntable (200).

2. The tail wing component plastic forming die according to claim 1, characterized in that: The rotating driving member (300) comprises a driving shaft (301) which passes through and is fixed at the center of the lower turntable (100) and the upper turntable (200); a reducer (302) is fixedly mounted on the bottom end of the driving shaft (301); and a motor (303) is fixedly mounted on the input end of the reducer (302); the supporting frame (400) comprises a base (401), the base (401) is attached to the right side of the lower turntable (100), and four groups of supporting rods (402) are fixedly mounted on the top of the base (401), the four groups of supporting rods (402) are distributed in a matrix, top plates (403) are fixedly mounted on the top ends of the four supporting rods (402), a limiting ring (404) is fixedly mounted on the middle part of each supporting rod (402), and an arch plate (405) is fixedly mounted on the upper surface of the left half of the base (401).

3. The tail wing component plastic forming die according to claim 2, characterized in that: The support plate assembly (600) comprises a support plate body (601) slidably connected to four support rods (402), the support plate body (601) is located at the lower side of the limit ring (404), an L-shaped support arm (602) is fixedly installed at the top center of the support plate body (601), the output end of the hydraulic cylinder (500) passes through and is slidably connected to the horizontal part of the L-shaped support arm (602), a punch (603) is fixedly installed at the output end of the hydraulic cylinder (500), an avoidance groove (604) is penetrated through the upper surface of the left half of the support plate body (601), an arch plate 2 (605) is fixedly installed on the upper surface of the left half of the support plate body (601), a guide groove (606) is penetrated through the upper surface of the right half of the support plate body (601), and a mounting groove (607) is penetrated through the rear side of the vertical part of the L-shaped support arm (602).

4. The tail wing component plastic forming die according to claim 1, characterized in that: The feeding assembly (700) comprises a side plate (701) fixedly mounted on the rear side of the support frame (400), a cylinder 1 (702) fixedly mounted on the rear side of the side plate (701), a sliding plate (703) fixedly mounted on the output end of the cylinder 1 (702), the sliding plate (703) being slidably connected to the rear side of the side plate (701), two cross arms (704) fixedly mounted on the left side of the sliding plate (703), a motor 2 (705) fixedly mounted on the rear side of the sliding plate (703), A threaded rod (706) is fixedly installed at the output end of the second motor (705), and a T-shaped plate (707) is threadedly connected to the threaded rod (706). A threaded hole is opened at the right end of the T-shaped plate (707), and two push rods (708) are fixedly installed on the front side of the left end of the T-shaped plate (707). The two push rods (708) are respectively penetrated and slidably connected to the two cross arms (704), and the two push rods (708) are respectively located on the upper side of the lower turntable (100) and the upper turntable (200).

5. The tail wing component plastic forming die according to claim 3, characterized in that: The blanking assembly (800) comprises a slide seat (801) fixedly mounted on the upper surface of the rear half of the base (401); an L-shaped plate (802) is slidably connected to the slide seat (801); a vertical portion of the L-shaped plate (802) is slidably connected in a guide groove (606); a slider (803) is slidably connected to the right side of the L-shaped plate (802); a cylinder 2 (804) is fixedly mounted on the right side of the slider (803); the cylinder 2 (804) is fixedly mounted on the bottom of the support plate body (601); a blanking plate (805) is slidably connected to the vertical portion of the L-shaped plate (802); the blanking plate (805) is slidably connected in a mounting groove (607).

6. The tail wing component plastic forming die according to claim 1, characterized in that: The mold assembly (900) comprises a lower mold base (901) and an upper mold base (902), wherein the lower mold base (901) and the upper mold base (902) are respectively placed in the step groove 1 (101) and the step groove 2 (201), and the top of the lower mold base (901) is provided with an array of embedding grooves (903), and an embedding block (904) is slidably connected in the embedding groove (903), and a boss (905) is fixedly installed on the top of the embedding block (904) near the center of the lower mold base (901). A receiving groove (906) is provided at the center of the lower mold base (901); a lower tail wing groove (907) is arranged in an array on the top of the lower mold base (901); a docking groove (908) is provided in an array on the bottom of the upper mold base (902); the docking groove (908) corresponds one-to-one with the insert block (904); an upper tail wing groove (909) is provided in an array on the bottom of the upper mold base (902); the upper tail wing groove (909) corresponds one-to-one with the lower tail wing groove (907); an extrusion pusher is provided between the insert block (904) and the upper mold base (902).

7. The tail wing component plastic forming die according to claim 6, characterized in that: The extrusion pusher comprises a tilting rod (910) fixedly mounted on the top of the insert (904); a tilting groove (911) is formed through an array on the top of the upper die seat (902); the tilting groove (911) is connected to the docking groove (908); and the tilting rod (910) is inserted into the tilting groove (911).

8. The tail wing component plastic forming die according to claim 6, characterized in that: The extrusion pusher comprises an extrusion ring (912) fixedly mounted on the bottom of the upper die base (902), the inner diameter of the extrusion ring (912) gradually decreasing from top to bottom, and the side of the insert (904) away from the center of the lower die base (901) is attached to the inner wall of the extrusion ring (912).

9. The tail wing component plastic forming die according to claim 1, characterized in that: The mold assembly (900) comprises a left mold base (913) and a right mold base (914), two extension plates (915) are fixedly installed on opposite sides of the left mold base (913) and the right mold base (914), and the two extension plates (915) are distributed on the left and right sides. The left mold base (913) and the right mold base (914) are placed in the stepped groove one (101); the left mold base (913) and the right mold base (914) are provided with a receiving groove two (916) and a receiving groove three (917) on opposite sides of the left mold base (913) and the right mold base (914), and the receiving groove three (917) is connected to the center of the receiving groove two (916). The left mold base (913) and the right mold base (914) are both provided with side tail grooves (918) in an array on the inner wall of the receiving groove two (916), and the extension plates (915) are provided with bolt holes (919) in an array.

10. The method for using the plastic forming mold for a tail wing part according to any one of claims 1 to 9, comprising: S1. According to the specific size of the tail wing parts, calculate the corresponding size of the blank, and use the ordinary die forging method to process it into a cylindrical blank with one end thicker and the other thinner; S2, subjecting the obtained billet to a solid solution treatment, wherein the temperature of the aluminum alloy is controlled between 350-650°C, the temperature of the magnesium alloy is controlled between 250-550°C, and the holding time is between 1-24 hours; S3, placing the solution treated blank in cold water or liquid nitrogen for 1-10 minutes for quenching; S4, the quenched blank is kept at 60-150°C for 2-20 hours for aging treatment; S5, heating the aged blanks to a predetermined temperature, between 350-650°C for aluminum alloy and between 250-550°C for magnesium alloy, and placing them in the first receiving tank (906) or the third receiving tank (917) to form the tail fin; S6. Place the lower die base (901) in the step groove 1 (101), and place the upper die base (902) in the step groove 2 (201); or fix the left die base (913) and the right die base (914) together by bolts, and place the left die base (913) and the right die base (914) vertically in the step groove 1 (101); drive the drive shaft (301) to rotate by the motor 1 (303) and the reducer (302), so as to drive the lower turntable (100) and the upper turntable (200) to rotate, so that the step groove 1 (101) is opposite to the arch plate 1 (405), and the step groove 2 (201) is opposite to the arch plate 1 (405). The second die plate (605) is relative to each other, and then the output end of the cylinder (702) is extended to drive the sliding plate (703) to move to the left, and the threaded rod (706) is driven to rotate by the motor (705), driving the T-shaped plate (707) and the push rod (708) to move forward, and then the output end of the cylinder (702) is contracted, and the two push rods (708) move to the right, thereby pushing the upper die seat (902) into the avoidance groove (604) and pushing the lower die seat (901) into the arched plate (405); or pushing the left die seat (913) and the right die seat (914) into the arched plate (405) together; S7, the output end of the hydraulic cylinder (500) is extended to make the upper die base (902) approach the lower die base (901), and then the output end of the hydraulic cylinder (500) continues to extend to apply pressure, so that the blank is deformed and the tail fin is formed; or the output end of the hydraulic cylinder (500) is extended, and the punch (603) is inserted into the second receiving groove (916) to extrude the blank, so that the blank is deformed and the tail fin is formed; S8. After the blank is formed, the output end of the hydraulic cylinder (500) is contracted, and the punch (603) pulls the L-shaped support arm (602) and the support plate body (601) upward, so that the upper die seat (902) is separated from the lower die seat (901); or the output end of the hydraulic cylinder (500) and the punch (603) are pulled out from the second receiving groove (916); then the output end of the second cylinder (804) is extended to drive the L-shaped plate (802) to move leftward, and the horizontal part of the L-shaped plate (802) and the blanking plate (805) move forward, so that the upper die seat (902) moves into the second stepped groove (201), and the lower die seat (901) moves into the first stepped groove (101); or the left die seat (913) and the right die seat (914) are pushed into the first stepped groove (101) together.

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