Aircraft thin-wall parts processing equipment and method

Abstract

The present invention provides a thin-walled aircraft parts processing equipment and method, and relates to the technical field of titanium alloy winding and forming. The thin-walled aircraft parts processing equipment and method include a titanium alloy slat and a chassis. In the present invention, the titanium alloy slat is bent and wound into a full circle by a forming mold and a plurality of groups of pressure rollers. The forming mold cooperates with a plurality of groups of pressure rollers to drive the heated titanium alloy slat to rotate continuously, which can effectively eliminate the forming springback. After cooling, the parts have small springback deformation and high dimensional stability, which solves the problem that large titanium alloy thin-walled cylindrical parts cannot be processed and formed at one time in the traditional technology. During the feeding process of the titanium alloy slat, a plurality of groups of feeding rollers cooperate with a first limiting roller, a second limiting roller, a first guide roller and a second guide roller to feed and limit at the same time, and there is no need to fix the head and tail ends of the titanium alloy slat. After the bending and winding forming is completed, the ejection cylinder can drive the ejection ring to eject the finished product forward from the forming mold.

Description

Technical Field

[0001] The invention relates to the technical field of titanium alloy winding and forming, in particular to a processing device and method for aircraft thin-walled parts. Background Art

[0002] Aircraft thin-walled cylindrical parts are formed by bending titanium alloy sheets. Bending refers to the process of pressing the titanium alloy sheet with a side pressure wheel or a side pressure block and gradually bending it around the bending die. The titanium alloy sheet is pressed on the rotatable bending die by the clamping slider, and the profile is bent under the joint action of the mold rotation and the follow-up side pressure block. In order to overcome the disadvantage that titanium alloy is difficult to form at room temperature and enable titanium alloy to be formed into high-precision workpieces under control, the method of heating and bending can better achieve the purpose of forming titanium alloy.

[0003] The prior art discloses an induction heating bending forming device for aircraft profiles, which uses an induction heating system to heat the profile. The induction heating system is located outside the bending forming device, and the induction coil is located outside the profile. After power is turned on, a magnetic field is generated around the induction coil, and the profile is located in the magnetic field. The temperature rises by cutting the magnetic lines of force; the coil feeding mechanism is installed at the clamp of the bending machine to complete the feeding movement of the induction coil. The hot bending forming of aircraft profile parts is achieved through the forming device, which improves the forming accuracy and organizational stability, and ensures the surface quality of the formed workpiece. The prior art also discloses a three-dimensional hot bending forming device with segmented shape control and temperature control. The profile adopts self-resistance heating, and the temperature control cabinet controls the resistance wire heating and thermocouple data acquisition; by designing a segmented shape control and temperature control device with independent heat preservation properties and moving with the profile during the forming process, the heating efficiency and temperature control accuracy are improved, and the flexible, efficient, and low-cost three-dimensional hot bending precision forming of difficult-to-process metal profiles at room temperature is achieved. The prior art also discloses an electric heating bending machine for titanium alloy profiles. The profile heating system is installed on the periphery of the bending machine, and the profile is heated by wire connection; the profile is heated to the specified temperature and then bent, which improves the plasticity of the titanium alloy and reduces the deformation resistance, effectively improving the forming performance of the titanium alloy. The forming device has the characteristics of fast heating speed and easy temperature control.

[0004] In summary, the existing technology mainly has the following deficiencies: the induction heating bending device cannot form large-sized full-circular workpieces; the process flow for forming two-dimensional shaped parts is complicated, the production efficiency is low, and large-sized full-circular workpieces cannot be formed; due to the process characteristics of the bending itself, only workpieces with a maximum bending angle of 220° can be formed. For parts forming more than 220°, such as full-circular parts, it is impossible to form them in one time, resulting in certain defects in the integrity of the produced workpieces. For this reason, there is an improved technology on the market that proposes a titanium alloy thin-walled circular part hot bending forming device, including a mold, a side pressure device, a clamp unit, a self-resistance heating unit, a rotating workbench and an insulation box, the mold is provided with an annular die for accommodating thin-walled workpieces, the side pressure device is slidably arranged on the same horizontal plane as the annular die of the mold, a part of the clamp unit is arranged on the mold, and the other part is slidably arranged on the same horizontal plane as the annular die of the mold; one electrode of the self-resistance heating unit is connected to the part of the clamp unit on the mold, and the other electrode is connected to the slidable part of the clamp unit; the insulation box is arranged on the rotating workbench. The improved technology claims that it can complete the processing of large-curvature, full-circular titanium alloy thin-walled profiles and can be formed in one go;

[0005] However, it can be learned from the specification of the above-mentioned improved technology that when it is working, one end of the workpiece is clamped by the fixed end clamp set on the rotating worktable, and the other end is clamped by the sliding clamp. When the rotating worktable rotates, it drives the workpiece to bend against the outer wall of the mold. The problem is that when bending to the end, the first section clamped by the fixed end clamp and the end clamped by the sliding clamp cannot become a perfect circle. The two clamps interfere with each other, and its single roller structure cannot play a role in pressing the material. After the clamp is released, there is a large forming rebound, which makes it difficult for the curvature of the product formed after bending to reach the preset size. Therefore, this technology does not solve the problem of completing the full circular titanium alloy thin-walled profile with large curvature in one processing. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides an aircraft thin-walled parts processing device and method, which solves the problem in the prior art of completing one-time processing and forming of a full-circular titanium alloy thin-walled profile with a large curvature.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an aircraft thin-walled parts processing equipment, including titanium alloy strips and a chassis, the upper wall of the chassis is provided with a feeding box, a heating box, and a forming box from left to right in sequence, the left wall of the feeding box is rotatably connected to a feeding door, the front wall of the forming box is rotatably connected to a discharge door, the feeding box and the heating box are both provided with a plurality of groups of feeding rollers for conveying the titanium alloy strips, the feeding box is provided with a feeding driving structure for driving the feeding rollers located in the feeding box, the feeding box and the heating box are both provided with a width limiting structure for limiting the front and rear positions during feeding, a heating structure for heating the titanium alloy strips to facilitate winding and forming is provided inside the heating box, a partition is fixedly connected to the inner wall of the forming box, a plurality of groups of reinforcing ribs for support are provided between the rear wall of the partition and the inner wall of the forming box, and a winding and forming device for winding the heated titanium alloy strips into a cylindrical shape is provided inside the forming box.

[0010] Preferably, the inner wall of the feeding box is rotatably connected to multiple groups of first rotating shafts and second rotating shafts, and the multiple groups of second rotating shafts are respectively located above the multiple groups of first rotating shafts, and the multiple groups of first rotating shafts and second rotating shafts are distributed in sequence on the left and right; the inner wall of the heating box is rotatably connected to two groups of third rotating shafts and fourth rotating shafts, and the two groups of fourth rotating shafts are respectively located above the two groups of third rotating shafts, and the two groups of third rotating shafts and the two groups of fourth rotating shafts are distributed on the left and right; the multiple groups of feeding rollers are respectively fixedly connected to the outer walls of multiple groups of first rotating shafts, multiple groups of second rotating shafts, two groups of third rotating shafts and two groups of fourth rotating shafts; the inner wall of the heating box and the two groups of third rotating shafts are fixedly connected with an insulating shell, and the heating structure is arranged on the inner wall of the insulating shell; a rotating column is rotatably connected between the rear wall of the partition and the inner rear wall of the forming box through two groups of bearing seats, and the front end of the rotating column passes through the inner wall of the partition and extends to the partition. On the front side, the front end of the rotating column is fixedly connected to a core shaft, the inner wall of the molding box and the front side of the partition are fixedly connected to a fixing ring through four groups of pillars, the lower left corner of the fixing ring and the left wall of the molding box are provided with feed ports, and the horizontal height of the feed port of the fixing ring is higher than the feed port of the molding box, the winding molding device includes a material guiding structure, a molding mold, a material pressing structure, a molding drive structure and a material discharging structure, the material guiding structure is arranged on the inner left wall of the molding box and is located between the feed port of the molding box and the feed port of the fixing ring, the molding mold is fixedly connected to the outer wall of the core shaft and is located on the inner side of the fixing ring, the outer contour of the front projection of the molding mold is circular, the molding mold and the fixing ring are coaxially arranged, the material pressing structure is arranged on the outer wall of the fixing ring, the molding drive structure is arranged between the inner rear wall of the molding box and the rotating column, and the material discharging structure is arranged between the rear wall of the partition and the molding mold.

[0011] Preferably, the feeding drive structure includes a first motor and a driving shaft, the first motor is fixedly connected to the inner lower wall of the base frame, the driving shaft is rotatably connected to the inner wall of the base frame, the first motor drives the driving shaft to rotate through a belt and two sets of pulleys, the driving shaft drives multiple sets of first rotating shafts to rotate through multiple sets of sprockets and chains, and the first rotating shaft drives the second rotating shaft opposite to the first rotating shaft up and down to rotate through two sets of first gears.

[0012] Preferably, the width limiting structure includes multiple groups of fifth rotating shafts and seventh rotating shafts, multiple groups of the fifth rotating shafts are distributed left and right and can be detachably connected in sequence between the inner upper wall and the inner lower wall of the feeding box and between the inner upper wall and the inner lower wall of the heating box, multiple groups of the fifth rotating shafts are respectively close to the front wall of the feeding box and the front wall of the heating box, multiple groups of the seventh rotating shafts are distributed left and right and can be detachably connected in sequence between the inner upper wall and the inner lower wall of the feeding box and between the inner upper wall and the inner lower wall of the heating box, multiple groups of the seventh rotating shafts are respectively close to the rear wall of the feeding box and the rear wall of the heating box, multiple groups of the fifth rotating shafts outer walls are rotatably connected to the first limiting roller, multiple groups of the seventh rotating shafts outer walls are rotatably connected to the second limiting roller, and the front and rear positions of the titanium alloy strips are limited by the multiple groups of first limiting rollers and second limiting rollers when feeding through the feeding rollers.

[0013] Preferably, the heating structure includes a heat reflecting layer and an overfrequency electric heating coil, the heat reflecting layer is fixedly connected to the inner wall of the insulating shell, the overfrequency electric heating coil is fixedly connected to the upper wall of the insulating shell through pins, and the overfrequency electric heating coil is rectangular in side view.

[0014] Preferably, the material guide structure includes a material guide plate, two groups of first material guide rollers and two groups of second material guide rollers, the material guide plate is fixedly connected to the inner left wall of the forming box and is opposite to the left and right sides of the forming box feed port, the two groups of the first material guide rollers are distributed up and down and are rotatably connected to the front wall of the material guide plate in sequence, the two groups of the second material guide rollers are distributed up and down and are rotatably connected to the front wall of the material guide plate in sequence and are both located on the right side of the two groups of first material guide rollers, the up and down center of the forming box feed port, the height center of the gap between the opposite sides of the two groups of first material guide rollers, the height center of the gap between the opposite sides of the two groups of second material guide rollers and the up and down center of the fixed ring feed port are located on the same straight line under the frontal projection.

[0015] Preferably, the pressing structure includes multiple groups of pressing rollers, and the multiple groups of pressing rollers are rotatably connected to the inner wall of the fixed ring through a group of sixth rotating shafts respectively; the outer wall of the fixed ring is slidably connected to two groups of guide rods through two groups of sliding seats; the two groups of guide rods are commonly fixedly connected to a top plate at one end away from the center of the fixed ring; a hydraulic cylinder is fixedly connected to the outer wall of the fixed ring and located between the two groups of guide rods; the extended shaft end of the hydraulic cylinder is fixedly connected to the top plate; the ends of the two groups of guide rods facing the fixed ring both penetrate the inner wall of the fixed ring and extend into the interior of the fixed ring; the sixth rotating shaft is rotatably connected to one end of the two groups of guide rods extending into the interior of the fixed ring through two groups of supports.

[0016] Preferably, the molding drive structure includes a second motor, a reducer, a second gear and a third gear. The reducer and the second motor are fixedly connected to the inner rear wall of the molding box in sequence according to the upper and lower distribution and are both located below the rotating column. The second motor extension shaft is fixedly connected to the reducer input shaft through a coupling. The second gear is fixedly connected to the end of the reducer output shaft. The third gear is fixedly connected to the outer wall of the rotating column and the outer wall of the third gear is meshed with the outer wall of the second gear.

[0017] Preferably, the discharging structure includes a ejecting ring and multiple groups of ejecting cylinders, the ejecting ring is slidably connected to the outer wall of the molding mold, the multiple groups of ejecting cylinders are fixedly connected to the rear wall of the partition, the extending shafts of the multiple groups of ejecting cylinders pass through the inner wall of the partition and extend to the front side of the partition, and the ends of the extending shafts of the multiple groups of ejecting cylinders are fixedly connected to the rear end of the ejecting ring.

[0018] According to the above-mentioned processing method of an aircraft thin-walled parts processing equipment, the processing method comprises the following steps:

[0019] S1. Prepare the titanium alloy strips to be cut into a predetermined length and width, set the speed of the first motor, the speed of the second motor, the heating temperature of the overclocked electric heating coil, and the ejection pressure of the hydraulic cylinder, adjust the gap between the upper and lower adjacent feeding rollers according to the thickness of the titanium alloy strips, and adjust the distance between the front and rear adjacent first limiting rollers and second limiting rollers according to the width of the titanium alloy strips;

[0020] S2, feeding, opening the feeding door, feeding the titanium alloy strip from the left side of the feeding box into between the feeding roller on the outer wall of the first rotating shaft and the feeding roller on the outer wall of the second rotating shaft, the first motor rotates to drive the driving shaft to rotate, the driving shaft drives the multiple groups of first rotating shafts in the feeding box to rotate, and the multiple groups of first rotating shafts drive the multiple groups of second rotating shafts to rotate, thereby driving the titanium alloy strip to be fed from left to right;

[0021] S3, heating, when the right end of the titanium alloy strip passes through the heating box, it passes through the inside of the overfrequency electric heating coil, and the titanium alloy strip located inside the overfrequency electric heating coil is quickly heated to the winding forming temperature by the overfrequency electric heating coil;

[0022] S4, winding forming, the heated titanium alloy strip continues to be fed to the right, and is guided by the material guide structure to be fed between the forming mold and a group of pressing rollers located below and to the left of the forming mold. The forming mold is driven by the second motor to rotate in the counterclockwise direction of the front projection. The conveying force of the feeding drive structure and the pressing force between the forming mold and the pressing roller make the heated titanium alloy strip move forward along the circumferential outer wall of the forming mold. When moving forward, it is continuously pressed against the outer wall of the forming mold by the subsequent pressing rollers. When the titanium alloy strip rotates around the outer wall of the forming mold once, the left and right ends of the titanium alloy strip are close to a closed state, thereby forming a titanium alloy thin-walled cylindrical part;

[0023] S5, discharging. The forming mold drives the titanium alloy strip to rotate several times. After cooling and shaping, multiple groups of hydraulic cylinders extend the shaft to drive the pressure roller to move in the direction away from the axis of the forming mold, thereby releasing the pressure on the titanium alloy thin-walled cylindrical parts. After opening the discharging door, the ejecting cylinder can be started, and the ejecting cylinder extends the shaft to eject the titanium alloy thin-walled cylindrical parts on the outer wall of the forming mold forward through the ejecting ring to achieve the purpose of discharging.

[0024] (III) Beneficial effects

[0025] The present invention provides a device and method for processing thin-walled aircraft parts. It has the following beneficial effects:

[0026] 1. Compared with the existing technology, the aircraft thin-walled parts processing equipment and method, after the titanium alloy strips are fed by the feeding box and heated by the heating box, the second motor drives the rotating forming mold and multiple groups of pressing rollers surrounding the outer wall of the forming mold to cooperate to bend into a full circle. The forming mold cooperates with multiple groups of pressing rollers to drive the heated titanium alloy strips to rotate continuously, which can effectively eliminate the forming springback. After cooling, the parts have small springback deformation and high dimensional stability, which solves the problem that large titanium alloy thin-walled cylindrical parts cannot be processed and formed in one time in traditional technology.

[0027] 2. Compared with the existing technology, the aircraft thin-walled parts processing equipment and method, during the feeding process of the titanium alloy strips, multiple sets of feeding rollers cooperate with the first limiting roller, the second limiting roller, the first guide roller and the second guide roller to limit the feeding and the same time, and there is no need to fix the head and tail ends of the titanium alloy strips, which solves the problem of interference of the clamps used for fixing in the traditional technology during bending.

[0028] 3. Compared with the prior art, the aircraft thin-walled parts processing equipment and method can, after the bending and winding forming is completed, drive the ejection ring through the ejection cylinder to eject the finished product forward from the forming mold, effectively avoiding the problem that the finished product is wrapped on the forming mold and is difficult to remove after the bending and winding forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a side view of the internal structure of the heating box of the present invention;

[0031] Figure 3 It is a side view of the internal structure of the insulating housing of the present invention;

[0032] Figure 4 It is a partial cross-sectional view of the internal structure of the molding box of the present invention;

[0033] Figure 5 For the present invention Figure 4 A partial enlarged view of the middle A;

[0034] Figure 6 It is a partial sectional view of the internal structure of the molding box of the present invention.

[0035] Among them, 1, chassis; 2, feeding box; 3, heating box; 4, forming box; 5, feeding door; 6, first motor; 7, first rotating shaft; 8, second rotating shaft; 9, third rotating shaft; 10, fourth rotating shaft; 11, discharge door; 12, feeding roller; 13, fifth rotating shaft; 14, first limiting roller; 15, insulating shell; 16, heat reflection layer; 17, overclocking electric heating coil; 18, pillar; 19, fixing ring; 20, guide plate; 21, first guide roller; 22, second guide roller; 2 3. Mandrel; 24. Forming mold; 25. Ejector ring; 26. Sliding seat; 27. Guide rod; 28. Ejector plate; 29. ​​Hydraulic cylinder; 30. Support; 31. Sixth rotating shaft; 32. Pressing roller; 33. Partition; 34. Reinforcing rib; 35. Ejector cylinder; 36. Second motor; 37. Reducer; 38. Coupling; 39. Second gear; 40. Third gear; 41. Bearing seat; 42. Rotating column; 43. Seventh rotating shaft; 44. Second limiting roller; 45. Driving shaft. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0037] Example:

[0038] like Figures 1 to 6As shown, an embodiment of the present invention provides an aircraft thin-walled parts processing equipment and method, including a titanium alloy strip and a chassis 1, wherein a feeding box 2, a heating box 3, and a forming box 4 are sequentially arranged on the upper wall of the chassis 1 from left to right, a feeding door 5 is rotatably connected to the left wall of the feeding box 2, and a discharge door 11 is rotatably connected to the front wall of the forming box 4, and a plurality of feeding rollers 12 for conveying the titanium alloy strip are arranged in the feeding box 2 and the heating box 3.

[0039] like Figure 1 As shown, in order to achieve the purpose of feeding, a feeding drive structure for driving a feeding roller 12 located in the feeding box 2 is provided in the feeding box 2, and the feeding drive structure includes a first motor 6 and a driving shaft 45, the first motor 6 is fixedly connected to the inner lower wall of the base frame 1, and the driving shaft 45 is rotatably connected to the inner wall of the base frame 1, and the first motor 6 drives the driving shaft 45 to rotate through a belt and two sets of pulleys, and the driving shaft 45 drives multiple sets of first rotating shafts 7 to rotate through multiple sets of sprockets and chains, and the first rotating shaft 7 drives the second rotating shaft 8 opposite to the first rotating shaft 7 up and down to rotate through two sets of first gears. When in use, the first motor 6 rotates to drive the driving shaft 45 to rotate, and the driving shaft 45 drives multiple sets of first rotating shafts 7 in the feeding box 2 to rotate, and multiple sets of first rotating shafts 7 drive multiple sets of second rotating shafts 8 to rotate, thereby driving the titanium alloy strips to feed from left to right, thereby achieving the purpose of feeding;

[0040] like Figure 1 , Figure 2 As shown, in order to ensure the accuracy of the feeding position, the feeding box 2 and the heating box 3 are both provided with a width limiting structure for limiting the front and rear positions during feeding, and the width limiting structure includes multiple groups of fifth rotating shafts 13 and seventh rotating shafts 43. Multiple groups of fifth rotating shafts 13 are distributed left and right and can be detachably connected in sequence between the inner upper wall and the inner lower wall of the feeding box 2 and between the inner upper wall and the inner lower wall of the heating box 3. Multiple groups of fifth rotating shafts 13 are respectively close to the front wall of the feeding box 2 and the front wall of the heating box 3. Multiple groups of seventh rotating shafts 43 are distributed left and right and can be detachably connected in sequence between the inner upper wall and the inner lower wall of the feeding box 2 and between the inner upper wall of the heating box 3. and the inner lower wall, multiple groups of seventh rotating shafts 43 are respectively close to the rear wall of the feeding box 2 and the rear wall of the heating box 3, multiple groups of fifth rotating shafts 13 outer walls are rotatably connected to the first limiting rollers 14, multiple groups of seventh rotating shafts 43 outer walls are rotatably connected to the second limiting rollers 44, and the titanium alloy strips are limited in front and back positions by multiple groups of first limiting rollers 14 and second limiting rollers 44 when being fed by the feeding rollers 12. When the titanium alloy strips are fed, the front and back directions (i.e., the width directions) are guided by multiple groups of first limiting rollers 14 and second limiting rollers 44, and no additional clamps are needed to fix them, thereby reducing the problem of bending interference caused by using clamps for fixing;

[0041] like Figure 1 , Figure 2 as well as Figure 3As shown, in order to facilitate the bending and winding of the titanium alloy strips, a heating structure for heating the titanium alloy strips to facilitate winding is provided inside the heating box 3. An insulating shell 15 is fixedly connected to the inner wall of the heating box 3 and located between the two sets of third rotating shafts 9. The heating structure is arranged on the inner wall of the insulating shell 15. The heating structure includes a heat reflecting layer 16 and an overfrequency electric heating coil 17. The heat reflecting layer 16 is fixedly connected to the inner wall of the insulating shell 15. The overfrequency electric heating coil 17 is fixedly connected to the upper wall of the insulating shell 15 through pins. The overfrequency electric heating coil 17 is rectangular in side view. After the overfrequency electric heating coil 17 is energized, the titanium alloy strips passing through the overfrequency electric heating coil 17 can be quickly heated to facilitate subsequent bending and winding.

[0042] like Figure 1 , Figure 4 , Figure 5 as well as Figure 6 As shown, in order to process the titanium alloy strips into a full circle, a partition 33 is fixedly connected to the inner wall of the forming box 4, and a plurality of groups of reinforcing ribs 34 for support are arranged between the rear wall of the partition 33 and the inner wall of the forming box 4. A winding forming device for winding the heated titanium alloy strips into a cylindrical shape is arranged inside the forming box 4. The inner wall of the feeding box 2 is rotatably connected to a plurality of groups of first rotating shafts 7 and a second rotating shaft 8, and the plurality of groups of second rotating shafts 8 are respectively located above the plurality of groups of first rotating shafts 7. The rotating shafts 8 are all distributed in sequence from left to right. The inner wall of the heating box 3 is rotatably connected with two sets of third rotating shafts 9 and fourth rotating shafts 10, and the two sets of fourth rotating shafts 10 are respectively located above the two sets of third rotating shafts 9. The two sets of third rotating shafts 9 and the two sets of fourth rotating shafts 10 are all distributed from left to right. Multiple sets of feeding rollers 12 are respectively fixedly connected to the outer walls of multiple sets of first rotating shafts 7, multiple sets of second rotating shafts 8, two sets of third rotating shafts 9 and two sets of fourth rotating shafts 10. The rear wall of the partition 33 is connected to the inner rear wall of the forming box 4 through The two sets of bearing seats 41 are rotatably connected with a rotating column 42, the front end of the rotating column 42 penetrates the inner wall of the partition 33 and extends to the front side of the partition 33, the front end of the rotating column 42 is fixedly connected with a core shaft 23, the inner wall of the molding box 4 and located in front of the partition 33 are fixedly connected with a fixing ring 19 through four sets of pillars 18, the lower left corner of the fixing ring 19 and the left wall of the molding box 4 are both provided with a feed port, and the horizontal height of the feed port of the fixing ring 19 is higher than the feed port of the molding box 4, the winding molding device includes a material guiding structure, a molding The mold 24, the pressing structure, the molding drive structure and the discharging structure, the molding mold 24 is fixedly connected to the outer wall of the core shaft 23 and is located on the inner side of the fixing ring 19, the outer contour of the molding mold 24 is circular when viewed from the front, and the molding mold 24 and the fixing ring 19 are coaxially arranged. When the heated titanium alloy strip is fed between the molding mold 24 and the pressing roller 32, the second motor 36 rotates to drive the titanium alloy strip to move around the outer wall of the molding mold 24 and is gradually pressed into a full circle;

[0043] like Figure 4As shown, in order to guide the feeding direction of the titanium alloy strips between the heating box 3 and the fixed ring 19, the material guide structure is arranged on the inner left wall of the forming box 4 and is located between the feed port of the forming box 4 and the feed port of the fixed ring 19. The material guide structure includes a material guide plate 20, two groups of first material guide rollers 21 and two groups of second material guide rollers 22. The material guide plate 20 is fixedly connected to the inner left wall of the forming box 4 and is opposite to the feed port of the forming box 4 on the left and right. The two groups of first material guide rollers 21 are distributed up and down and are connected to the front wall of the material guide plate 20 in sequence. The two groups of second material guide rollers 22 are distributed up and down and are connected to the guide plate in sequence. 20 front wall and are both located on the right side of the two groups of first guide rollers 21, the vertical center of the feed port of the forming box 4, the height center of the gap between the opposite sides of the two groups of first guide rollers 21, the height center of the gap between the opposite sides of the two groups of second guide rollers 22, and the vertical center of the feed port of the fixing ring 19 are located on the same straight line under the front projection. Through the guiding of the two groups of first guide rollers 21 and the second guide rollers 22, the titanium alloy strip can be accurately fed into the forming mold 24 and a group of pressing rollers 32 located on the lower left side of the forming mold 24 to complete the feeding action of the bending and winding forming;

[0044] like Figure 4 and Figure 5 In order to improve the quality of the product after forming, the pressing structure is arranged on the outer wall of the fixed ring 19, and the pressing structure includes a plurality of pressing rollers 32, and the plurality of pressing rollers 32 are respectively rotatably connected to the inner wall of the fixed ring 19 through a group of sixth rotating shafts 31, and the outer wall of the fixed ring 19 is slidably connected with two groups of guide rods 27 through two groups of sliding seats 26, and the two groups of guide rods 27 are fixedly connected with a top plate 28 at one end away from the center of the fixed ring 19, and a hydraulic cylinder 29 is fixedly connected to the outer wall of the fixed ring 19 and located between the two groups of guide rods 27, and the hydraulic cylinder 29 extends out of the shaft end and is fixedly connected to the top plate 28, and the two groups of guide rods 27 are both penetrated through the inner wall of the fixed ring 19 and extend into the inside of the fixed ring 19 at one end, and the sixth rotating shaft 31 is rotatably connected to the two groups of guide rods 27 through the two groups of supports 30 and the ends extending into the inside of the fixed ring 19, and the plurality of pressing rollers 32 press the titanium alloy strips, so that the titanium alloy strips can be attached to the outer wall of the forming mold 24 after cooling, thereby reducing rebound and improving product quality;

[0045] like Figure 6As shown, in order to drive the forming mold 24 to rotate, the forming drive structure is arranged between the inner rear wall of the forming box 4 and the rotating column 42. The forming drive structure includes a second motor 36, a reducer 37, a second gear 39 and a third gear 40. The reducer 37 and the second motor 36 are fixedly connected to the inner rear wall of the forming box 4 in sequence according to the upper and lower distribution and are both located below the rotating column 42. The extension shaft of the second motor 36 is fixedly connected to the input shaft of the reducer 37 through a coupling 38. The second gear 39 is fixedly connected to the end of the output shaft of the reducer 37. The third gear 40 is fixedly connected to the outer wall of the rotating column 42 and the outer wall of the third gear 40 is meshed with the outer wall of the second gear 39. The reducer 37 can achieve the purpose of deceleration and torque increase, thereby improving the forming force during bending and winding forming. The second motor 36 rotates to drive the forming mold 24 to rotate, thereby realizing the forming action.

[0046] like Figure 5 , Figure 6 As shown, in order to facilitate discharging, the discharging structure is arranged between the rear wall of the partition 33 and the forming mold 24. The discharging structure includes a ejecting ring 25 and multiple groups of ejecting cylinders 35. The ejecting ring 25 is slidably connected to the outer wall of the forming mold 24, and the multiple groups of ejecting cylinders 35 are fixedly connected to the rear wall of the partition 33. The extending shafts of the multiple groups of ejecting cylinders 35 all penetrate the inner wall of the partition 33 and extend to the front side of the partition 33. The ends of the extending shafts of the multiple groups of ejecting cylinders 35 are fixedly connected to the rear end of the ejecting ring 25. After the product is molded and cooled, the extending shafts of the ejecting cylinders 35 extend to drive the ejecting ring 25 forward, and eject the product forward from the outer wall of the forming mold 24 to achieve discharging.

[0047] According to the above-mentioned processing method of an aircraft thin-walled parts processing equipment, the processing method comprises the following steps:

[0048] S1. Prepare the titanium alloy strips to be cut into a predetermined length and width, set the speed of the first motor 6, the speed of the second motor 36, the heating temperature of the overclocked electric heating coil 17, and the ejection pressure of the hydraulic cylinder 29, adjust the gap between the upper and lower adjacent feeding rollers 12 according to the thickness of the titanium alloy strips, and adjust the distance between the front and rear adjacent first limiting rollers 14 and second limiting rollers 44 according to the width of the titanium alloy strips;

[0049] S2, feeding, open the feeding door 5, feed the titanium alloy strip from the left side of the feeding box 2 to between the feeding roller 12 on the outer wall of the first rotating shaft 7 and the feeding roller 12 on the outer wall of the second rotating shaft 8, and drive the driving shaft 45 to rotate by the first motor 6, and drive the multiple groups of first rotating shafts 7 in the feeding box 2 to rotate by the driving shaft 45, and drive the multiple groups of second rotating shafts 8 to rotate by the multiple groups of first rotating shafts 7, thereby driving the titanium alloy strip to be fed from left to right;

[0050] S3, heating, when the right end of the titanium alloy strip passes through the heating box 3, it passes through the inside of the overfrequency electric heating coil 17, and the titanium alloy strip located in the inner range of the overfrequency electric heating coil 17 is quickly heated to the winding forming temperature by the overfrequency electric heating coil 17;

[0051] S4, winding forming, the heated titanium alloy strip continues to be fed to the right, and is guided by the material guide structure to be fed between the forming mold 24 and a group of pressing rollers 32 located below and to the left of the forming mold 24. The forming mold 24 is driven by the second motor 36 to rotate in the counterclockwise direction of the front view projection. The conveying force of the feeding drive structure and the pressing force between the forming mold 24 and the pressing rollers 32 make the heated titanium alloy strip move along the circumferential outer wall of the forming mold 24, and is continuously pressed toward the outer wall of the forming mold 24 by the subsequent pressing rollers 32 when moving forward. When the titanium alloy strip rotates around the outer wall of the forming mold 24 once, the left and right ends of the titanium alloy strip are close to a closed state, thereby forming a titanium alloy thin-walled cylindrical part;

[0052] S5, discharging. The forming mold 24 drives the titanium alloy strip to rotate several circles. After cooling and shaping, multiple groups of hydraulic cylinders 29 extend their shafts to drive the pressing rollers 32 to move in a direction away from the axis of the forming mold 24, thereby releasing the pressure on the titanium alloy thin-walled cylindrical parts. After opening the discharging door 11, the ejecting cylinder 35 can be started. The ejecting cylinder 35 extends its shaft and ejects the titanium alloy thin-walled cylindrical parts on the outer wall of the forming mold 24 forward through the ejecting ring 25 to achieve the purpose of discharging.

[0053] Working principle: When in use, the first motor 6 rotates to drive the driving shaft 45 to rotate, and the driving shaft 45 drives the multiple groups of first rotating shafts 7 in the feeding box 2 to rotate, and the multiple groups of first rotating shafts 7 drive the multiple groups of second rotating shafts 8 to rotate, thereby driving the titanium alloy strips to be fed from left to right to achieve the purpose of feeding. When the titanium alloy strips are fed, the front and rear directions (i.e., the width direction) are guided by the multiple groups of first limiting rollers 14 and the second limiting rollers 44, and no additional clamps are needed to fix them, reducing the bending interference problem caused by the use of clamps. After the overfrequency electric heating coil 17 is energized, the titanium alloy strips passing through the inside of the overfrequency electric heating coil 17 can be quickly heated to facilitate subsequent bending and forming. Through the guiding of the two groups of first guide rollers 21 and the second guide rollers 22, the titanium alloy strips can be accurately fed into the forming mold 24 and the forming mold 24. The tool 24 is pressed between a group of pressure rollers 32 on the lower left side to complete the feeding action of bending and winding. When the heated titanium alloy strip is fed between the forming mold 24 and the pressure roller 32, the rotation of the second motor 36 drives the titanium alloy strip to move around the outer wall of the forming mold 24 and is gradually pressed into a full circle. The reducer 37 is set to achieve the purpose of deceleration and torque increase, and improve the forming force during bending and winding. The second motor 36 rotates to drive the forming mold 24 to rotate to achieve the forming action. Multiple groups of pressure rollers 32 press the titanium alloy strip, so that the titanium alloy strip can be attached to the outer wall of the forming mold 24 after cooling, reduce rebound, and improve product quality. After product molding and cooling are completed, the ejection cylinder 35 extends the shaft to drive the ejection ring 25 forward, and the product is ejected forward from the outer wall of the forming mold 24 to achieve discharge.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aircraft thin-walled parts processing equipment, characterized by: The invention comprises a titanium alloy strip and a base frame (1), wherein a feed box (2), a heating box (3), and a forming box (4) are arranged on the upper wall of the base frame (1) from left to right in sequence, wherein a feed door (5) is rotatably connected to the left wall of the feed box (2), and a discharge door (11) is rotatably connected to the front wall of the forming box (4), wherein the feed box (2) and the heating box (3) are each provided with a plurality of groups of feed rollers (12) for conveying the titanium alloy strip, and the feed box (2) is provided with a feed drive structure for driving the feed rollers (12) located in the feed box (2). The feeding box (2) and the heating box (3) are both provided with a width limiting structure for limiting the front and rear positions during feeding, the heating box (3) is provided with a heating structure for heating the titanium alloy strips to facilitate winding and forming, the inner wall of the forming box (4) is fixedly connected with a partition (33), a plurality of groups of reinforcing ribs (34) for support are provided between the rear wall of the partition (33) and the inner wall of the forming box (4), and the forming box (4) is provided with a winding and forming device for winding the heated titanium alloy strips into a cylindrical shape; The inner side wall of the feeding box (2) is rotatably connected to a plurality of groups of first rotating shafts (7) and second rotating shafts (8), and the plurality of groups of second rotating shafts (8) are respectively located above the plurality of groups of first rotating shafts (7), and the plurality of groups of first rotating shafts (7) and second rotating shafts (8) are all distributed in sequence on the left and right. The inner side wall of the heating box (3) is rotatably connected to two groups of third rotating shafts (9) and fourth rotating shafts (10), and the two groups of fourth rotating shafts (10) are respectively located above the two groups of third rotating shafts (9), and the two groups of third rotating shafts (9) and the two groups of fourth rotating shafts (10) are all distributed on the left and right. The plurality of groups of feeding rollers (12) are respectively The plurality of first rotating shafts (7) and the plurality of second rotating shafts (8) are fixedly connected to the outer walls of the two groups of third rotating shafts (9), and the outer walls of the two groups of fourth rotating shafts (10); the inner wall of the heating box (3) and the two groups of third rotating shafts (9) are fixedly connected to an insulating shell (15); the heating structure is arranged on the inner wall of the insulating shell (15); a rotating column (42) is rotatably connected between the rear wall of the partition (33) and the inner rear wall of the molding box (4) through two groups of bearing seats (41); the front end of the rotating column (42) penetrates the inner wall of the partition (33) and extends to the inner wall of the partition (33). 33), the front end of the rotating column (42) is fixedly connected to a core shaft (23), the inner wall of the molding box (4) and located in front of the partition (33) is fixedly connected to a fixing ring (19) through four groups of pillars (18), the lower left corner of the fixing ring (19) and the left wall of the molding box (4) are both provided with a feed opening, and the horizontal height of the feed opening of the fixing ring (19) is higher than the feed opening of the molding box (4), the winding molding device comprises a material guiding structure, a molding die (24), a material pressing structure, a molding drive structure and a material discharging structure, the material guiding structure is arranged in the molding box (4) The molding die (24) is fixedly connected to the outer wall of the core shaft (23) and is located inside the fixing ring (19); the outer contour of the molding die (24) in a front view projection is circular; the molding die (24) and the fixing ring (19) are coaxially arranged; the pressing structure is arranged on the outer wall of the fixing ring (19); the molding drive structure is arranged between the inner rear wall of the molding box (4) and the rotating column (42); and the discharging structure is arranged between the rear wall of the partition (33) and the molding die (24); The feeding drive structure comprises a first motor (6) and a drive shaft (45), wherein the first motor (6) is fixedly connected to the lower inner wall of the base frame (1), and the drive shaft (45) is rotatably connected to the inner wall of the base frame (1); the first motor (6) drives the drive shaft (45) to rotate via a belt and two sets of pulleys; the drive shaft (45) drives multiple sets of first rotating shafts (7) to rotate via multiple sets of sprockets and chains; the first rotating shaft (7) drives a second rotating shaft (8) opposite to the first rotating shaft (7) to rotate via two sets of first gears; The width limiting structure comprises a plurality of groups of fifth rotating shafts (13) and a seventh rotating shaft (43). The plurality of groups of the fifth rotating shafts (13) are distributed on the left and right and are detachably connected in sequence between the inner upper wall and the inner lower wall of the feeding box (2) and between the inner upper wall and the inner lower wall of the heating box (3). The plurality of groups of the fifth rotating shafts (13) are respectively close to the front wall of the feeding box (2) and the front wall of the heating box (3). The plurality of groups of the seventh rotating shafts (43) are distributed on the left and right and are detachably connected in sequence between the inner upper wall and the inner lower wall of the feeding box (2). The plurality of seventh rotating shafts (43) are respectively close to the rear wall of the feeding box (2) and the rear wall of the heating box (3); the plurality of fifth rotating shafts (13) are rotatably connected to the outer walls thereof with first limiting rollers (14); the plurality of seventh rotating shafts (43) are rotatably connected to the outer walls thereof with second limiting rollers (44); and the front and rear positions of the titanium alloy strips are limited by the plurality of first limiting rollers (14) and the second limiting rollers (44) when the titanium alloy strips are fed by the feeding rollers (12); The heating structure comprises a heat reflection layer (16) and an overfrequency electric heating coil (17); the heat reflection layer (16) is fixedly connected to the inner wall of the insulating shell (15); the overfrequency electric heating coil (17) is fixedly connected to the upper wall of the insulating shell (15) via pins; and the overfrequency electric heating coil (17) is rectangular in side view; The material guide structure comprises a material guide plate (20), two groups of first material guide rollers (21) and two groups of second material guide rollers (22); the material guide plate (20) is fixedly connected to the inner left wall of the molding box (4) and is opposite to the left and right sides of the molding box (4) feed opening; the two groups of the first material guide rollers (21) are distributed up and down and are rotatably connected to the front wall of the material guide plate (20); the two groups of the second material guide rollers (22) are distributed up and down and are rotatably connected to the front wall of the material guide plate (20) and are both located on the right side of the two groups of first material guide rollers (21); the vertical center of the molding box (4) feed opening, the height center of the gap between the opposite sides of the two groups of first material guide rollers (21), the height center of the gap between the opposite sides of the two groups of second material guide rollers (22) and the vertical center of the feed opening of the fixing ring (19) are located on the same straight line in frontal projection; The material pressing structure comprises a plurality of groups of material pressing rollers (32), the plurality of groups of material pressing rollers (32) are rotatably connected to the inner wall of the fixed ring (19) through a group of sixth rotating shafts (31), the outer wall of the fixed ring (19) is slidably connected to two groups of guide rods (27) through two groups of sliding seats (26), the ends of the two groups of guide rods (27) away from the center of the fixed ring (19) are commonly fixedly connected to a top plate (28), the outer wall of the fixed ring (19) and located between the two groups of guide rods (27) are fixedly connected to a hydraulic cylinder (29), the extended shaft end of the hydraulic cylinder (29) is fixedly connected to the top plate (28), the ends of the two groups of guide rods (27) facing the fixed ring (19) both penetrate the inner wall of the fixed ring (19) and both extend into the interior of the fixed ring (19), and the sixth rotating shaft (31) is rotatably connected to the ends of the two groups of guide rods (27) extending into the interior of the fixed ring (19) through two groups of supports (30); The molding drive structure comprises a second motor (36), a reducer (37), a second gear (39) and a third gear (40); the reducer (37) and the second motor (36) are fixedly connected to the inner rear wall of the molding box (4) in an upper and lower distribution and are both located below the rotating column (42); the extension shaft of the second motor (36) is fixedly connected to the input shaft of the reducer (37) via a coupling (38); the second gear (39) is fixedly connected to the end of the output shaft of the reducer (37); the third gear (40) is fixedly connected to the outer wall of the rotating column (42) and the outer wall of the third gear (40) is meshed with the outer wall of the second gear (39); The discharge structure comprises a discharge ring (25) and a plurality of discharge cylinders (35), wherein the discharge ring (25) is slidably connected to the outer wall of the forming mold (24), the plurality of discharge cylinders (35) are fixedly connected to the rear wall of the partition (33), the extension shafts of the plurality of discharge cylinders (35) penetrate the inner wall of the partition (33) and extend to the front side of the partition (33), and the ends of the extension shafts of the plurality of discharge cylinders (35) are fixedly connected to the rear end of the discharge ring (25).

2. The processing method of an aircraft thin-walled parts processing equipment according to claim 1 is characterized in that: The processing method comprises the following steps: S1, prepare the titanium alloy strips to be cut into a predetermined length and width, set the rotation speed of the first motor (6), the rotation speed of the second motor (36), the heating temperature of the overclocked electric heating coil (17), and the ejection pressure of the hydraulic cylinder (29), adjust the gap between the upper and lower adjacent feeding rollers (12) according to the thickness of the titanium alloy strips, and adjust the distance between the front and rear adjacent first limiting rollers (14) and second limiting rollers (44) according to the width of the titanium alloy strips; S2, feeding, opening the feeding door (5), feeding the titanium alloy strip from the left side of the feeding box (2) between the feeding roller (12) on the outer wall of the first rotating shaft (7) and the feeding roller (12) on the outer wall of the second rotating shaft (8), and driving the driving shaft (45) to rotate by the first motor (6), and the driving shaft (45) drives the multiple groups of first rotating shafts (7) in the feeding box (2) to rotate, and the multiple groups of first rotating shafts (7) drive the multiple groups of second rotating shafts (8) to rotate, thereby driving the titanium alloy strip to be fed from left to right; S3, heating, when the right end of the titanium alloy strip passes through the heating box (3), it passes through the interior of the overfrequency electric heating coil (17), and the titanium alloy strip located within the interior of the overfrequency electric heating coil (17) is rapidly heated to a winding forming temperature by the overfrequency electric heating coil (17); S4, winding forming, the heated titanium alloy strip continues to be fed to the right, and is guided by the material guide structure to be fed between the forming mold (24) and a group of pressing rollers (32) located below and to the left of the forming mold (24). The forming mold (24) is driven by the second motor (36) to rotate in the counterclockwise direction of the front view projection. The conveying force of the feeding drive structure and the pressing force between the forming mold (24) and the pressing rollers (32) make the heated titanium alloy strip move along the circumferential outer wall of the forming mold (24). When moving forward, it is continuously pressed against the outer wall of the forming mold (24) by the subsequent pressing rollers (32). When the titanium alloy strip rotates around the outer wall of the forming mold (24) once, the left and right ends of the titanium alloy strip are close to a closed state, thereby forming a titanium alloy thin-walled cylindrical part; S5, discharging, the forming mold (24) drives the titanium alloy strip to rotate several times, and after cooling and shaping, the multiple hydraulic cylinders (29) extend their shafts to drive the pressing rollers (32) to move in a direction away from the axis of the forming mold (24), thereby releasing the pressure on the titanium alloy thin-walled cylindrical parts. After the discharging door (11) is opened, the ejecting cylinder (35) can be started, and the ejecting cylinder (35) extends its shaft to eject the titanium alloy thin-walled cylindrical parts sleeved on the outer wall of the forming mold (24) forward through the ejecting ring (25), thereby achieving the purpose of discharging.

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