Aircraft tubing component bending apparatus and method to avoid dishing

Abstract

The application discloses a kind of aviation pipeline component bending equipment and method to avoid recess, belong to aviation part processing field, including base, pipeline support assembly, linear drive assembly and bending assembly, pipeline support assembly is used to support aviation pipe, bending assembly includes seat, turntable, rotary drive assembly, positioning wheel group, first bending wheel group and second bending wheel group, turntable and seat rotation connection, rotary drive assembly is used to drive turntable rotation, positioning wheel group includes positioning rod and positioning wheel, and center hole is provided on the turntable, the lower end of positioning rod is fixedly connected with seat, and upper end passes through center hole and is connected with positioning wheel and extends out;First bending wheel group includes first lifting assembly and first bending wheel, and second bending wheel group includes second lifting assembly and second bending wheel, the distance between first bending wheel and second bending wheel and positioning wheel is different, so as to improve the yield of aviation pipe.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aviation part processing, and particularly relates to a bending device and method for aviation pipeline parts capable of avoiding concave. BACKGROUND

[0002] In aviation equipment, in order to realize the compactness of the structure and improve the space utilization, the bent pipeline parts are usually needed. For example, in the oil delivery system of the aviation equipment, the bent pipeline is usually needed for oil delivery, and in the ventilation system of the aviation equipment, the bent pipeline is usually needed for fluid delivery.

[0003] The common bending device for the aviation pipeline parts currently comprises a base, a positioning wheel and a bending assembly provided on the base, the bending assembly comprises a connecting rod, a bending wheel and a pressing rod, the aviation pipeline is inserted between the positioning wheel and the bending wheel, the bending wheel is rotationally connected with the shaft center of the positioning wheel through the connecting rod, and the pressing rod is connected with the bending wheel. By holding the pressing rod and controlling the bending wheel to press down the aviation pipeline, the bending of the aviation pipeline can be realized. However, the aviation pipeline is prone to concave during bending, which leads to a low yield of the aviation pipeline. SUMMARY

[0004] In order to solve the above problems in the prior art, the present application provides a bending device and method for aviation pipeline parts capable of avoiding concave. The technical problem to be solved by the present application is realized through the following technical scheme.

[0005] In the first aspect, the present application provides a bending device for aviation pipeline parts capable of avoiding concave, comprising a base, a pipeline support assembly, a linear driving assembly and a bending assembly, the pipeline support assembly and the linear driving assembly are both installed on the base, the pipeline support assembly is used for supporting the aviation pipeline, and the linear driving assembly is used for driving the bending assembly to move along the length direction of the base.

[0006] The bending assembly comprises a seat body, a rotating disc, a rotating driving assembly, a positioning wheel set, a first bending wheel set and a second bending wheel set, the seat body is installed on the linear driving assembly, the rotating disc is rotationally connected with the seat body, the rotating driving assembly is used for driving the rotating disc to rotate, the positioning wheel set comprises a positioning rod and a positioning wheel, the rotating disc is provided with a center hole, the lower end of the positioning rod is fixedly connected with the seat body, the upper end of the positioning rod extends out through the center hole and is connected with the positioning wheel.

[0007] The first bending wheel set comprises a first lifting assembly and a first bending wheel, the first lifting assembly is installed on the rotating disc, the first lifting assembly is used for driving the first bending wheel to make lifting movement, the second bending wheel set comprises a second lifting assembly and a second bending wheel, the second lifting assembly is installed on the rotating disc, the second lifting assembly is used for driving the second bending wheel to make lifting movement, and when the rotating driving assembly drives the rotating disc to rotate, the rotating disc drives the first bending wheel set and the second bending wheel set to rotate around the axis of the rotating disc.

[0008] The distance between the first bending wheel and the positioning wheel is different from the distance between the second bending wheel and the positioning wheel, the aviation tube is located between the positioning wheel and the first bending wheel, and / or the aviation tube is located between the positioning wheel and the second bending wheel.

[0009] In an embodiment of the present application, the first bending wheel set further comprises a first linear driving assembly, the first linear driving assembly is installed on the upper surface of the rotating disc, the first lifting assembly is installed on the first linear driving assembly, and the first linear driving assembly is used to drive the first lifting assembly to move in a direction perpendicular to the axis of the aviation tube, so as to drive the first bending wheel to approach or move away from the aviation tube.

[0010] In an embodiment of the present application, the distance between the first bending wheel and the positioning wheel is less than the distance between the second bending wheel and the positioning wheel.

[0011] The second bending wheel set further comprises a second linear driving assembly, the second linear driving assembly is installed on the upper surface of the rotating disc, the second lifting assembly is installed on the second linear driving assembly, and the second linear driving assembly is used to drive the second lifting assembly to move in a direction perpendicular to the axis of the aviation tube, so as to drive the second bending wheel to approach or move away from the aviation tube.

[0012] In an embodiment of the present application, the bending assembly further comprises a third bending wheel set and a fourth bending wheel set, the third bending wheel set comprises a third lifting assembly and a third bending wheel, the third lifting assembly is installed on the rotating disc, and the third lifting assembly is used to drive the third bending wheel to move up and down, the fourth bending wheel set comprises a fourth lifting assembly and a fourth bending wheel, the fourth lifting assembly is installed on the rotating disc, and the fourth lifting assembly is used to drive the fourth bending wheel to move up and down, and when the rotating driving assembly drives the rotating disc to rotate, the rotating disc drives the first bending wheel set, the second bending wheel set, the third bending wheel set and the fourth bending wheel set to rotate around the axis of the rotating disc.

[0013] The first bending wheel, the second bending wheel, the third bending wheel and the fourth bending wheel are sequentially distributed along the circumference of the rotating disc, the distance between the second bending wheel and the positioning wheel is less than the distance between the third bending wheel and the positioning wheel.

[0014] The distance between the third bending wheel and the positioning wheel is less than the distance between the fourth bending wheel and the second bending wheel and the positioning wheel, and the distance between the third bending wheel and the positioning wheel is greater than the outer diameter of the aviation tube.

[0015] In an embodiment of the present application, a variable trajectory driving assembly is further included, the variable trajectory driving assembly comprises a transverse driving mechanism and a longitudinal driving mechanism, the transverse driving mechanism is arranged in the axis direction of the aviation tube, the longitudinal driving mechanism is arranged in the direction perpendicular to the axis of the aviation tube, the transverse driving mechanism is installed on the upper surface of the rotating disc, the longitudinal driving mechanism is installed on the transverse driving mechanism, and the second lifting assembly is installed on the longitudinal driving mechanism.

[0016] In one embodiment of the present application, the linear drive assembly comprises a first driver, a front end seat, a rear end seat, a rotating screw rod, and two guide rods, the rotating screw rod and the two guide rods are connected to the front end seat and the rear end seat at two ends respectively, the two guide rods are located at two sides of the rotating screw rod respectively, the first driver and the rotating screw rod are in transmission connection;

[0017] The seat body is in threaded connection with the rotating screw rod, and is in sliding connection with the guide rods, the seat body is provided with an annular surrounding plate, the bending assembly is arranged in the annular surrounding plate, the rotating disc and the annular surrounding plate are coaxially arranged, and the projection of the axis of the aviation pipe on the upper surface of the seat body is arranged in a staggered manner with the center of the annular surrounding plate;

[0018] The upper surface of the seat body is provided with a first counterweight cylinder and a second counterweight cylinder, the first counterweight cylinder and the second counterweight cylinder are located at the front side of the seat body, the first counterweight cylinder and the positioning wheel are located at two sides of the aviation pipe respectively, and the first counterweight cylinder and the second counterweight cylinder are both provided with counterweight blocks.

[0019] In one embodiment of the present application, the inner support assembly comprises a mounting frame, a second driver, a screw rod, a sleeve, a connecting rod, and a multi-joint core ball assembly, the mounting frame is fixed to the base, the second driver is fixed to the mounting frame, the second driver and the screw rod are in transmission connection, the sleeve is sleeved on the outside of the screw rod, the screw rod and the sleeve are in threaded connection, one end of the connecting rod is connected to the sleeve, the other end is connected to the multi-joint core ball assembly, the end of the sleeve extends into the aviation pipe, and the screw rod, the sleeve, and the aviation pipe are coaxially arranged;

[0020] The multi-joint core ball assembly comprises a plurality of spherical bodies, and a hinged rod is connected between two adjacent spherical bodies, and the two ends of the hinged rod are hingedly connected to the two adjacent spherical bodies respectively.

[0021] The outer circumferential surface of the spherical body is provided with a pressure sensor.

[0022] In a second aspect, the present application provides a method for bending an aviation pipe part avoiding concave, comprising the aviation pipe part bending equipment avoiding concave provided in the above-mentioned solution, the bending equipment comprises a base, a pipe support assembly, a linear drive assembly, and a bending assembly, the bending assembly comprises a seat body, a rotating disc, a rotating drive assembly, a positioning wheel set, a first bending wheel set, and a second bending wheel set, the positioning wheel set comprises a positioning rod and a positioning wheel, the first bending wheel set comprises a first lifting assembly and a first bending wheel, and the second bending wheel set comprises a second lifting assembly and a second bending wheel.

[0023] The method comprises:

[0024] The first bending wheel is driven to rise by the first lifting assembly, so that the first bending wheel and the positioning wheel are located at the same height;

[0025] The second bending wheel is driven to descend by the second lifting assembly, so that the upper surface of the second bending wheel is lower than the lower surface of the first bending wheel;

[0026] The aviation pipe is installed on the pipe support assembly, and the aviation pipe is inserted between the positioning wheel and the first bending wheel;

[0027] The bending assembly is driven to move along the length direction of the base by the linear driving assembly, so that the positioning wheel and the first bending wheel are driven to move to the preset bending position of the aviation pipe;

[0028] The rotating disc is driven to rotate by the rotating driving assembly, and the first bending wheel is driven to rotate around the axis of the rotating disc when the rotating disc rotates, so that the aviation pipe is bent by the pressure applied by the first bending wheel;

[0029] The rotation angle of the rotating disc is recorded, and the bending state of the bent part of the aviation pipe is detected;

[0030] When the rotation angle reaches the first angle, the positions of the first bending wheel and the second bending wheel are adjusted based on the bending state of the bent part of the aviation pipe, and the second bending wheel is driven to ascend by the second lifting assembly, so that the second bending wheel and the positioning wheel are located at the same height;

[0031] The aviation pipe is bent by the pressure applied by the second bending wheel, or the aviation pipe is bent by the pressure applied by the first bending wheel and the second bending wheel simultaneously.

[0032] In an embodiment of the present application, the first bending wheel set further comprises a first linear driving assembly, the first linear driving assembly is installed on the upper surface of the rotating disc, the first lifting assembly is installed on the first linear driving assembly, and the first linear driving assembly is used to drive the first lifting assembly to move in the direction perpendicular to the axis of the aviation pipe, so that the first bending wheel is driven to approach or move away from the aviation pipe;

[0033] The distance between the first bending wheel and the positioning wheel is smaller than the distance between the second bending wheel and the positioning wheel, the second bending wheel set further comprises a second linear driving assembly, the second linear driving assembly is installed on the upper surface of the rotating disc, the second lifting assembly is installed on the second linear driving assembly, and the second linear driving assembly is used to drive the second lifting assembly to move in the direction perpendicular to the axis of the aviation pipe, so that the second bending wheel is driven to approach or move away from the aviation pipe;

[0034] Or, a variable trajectory driving assembly is further included, the variable trajectory driving assembly comprises a transverse driving mechanism and a longitudinal driving mechanism, the transverse driving mechanism is arranged in the axis direction of the aviation pipe, the longitudinal driving mechanism is arranged in the direction perpendicular to the axis of the aviation pipe, the transverse driving mechanism is installed on the upper surface of the rotating disc, the longitudinal driving mechanism is installed on the transverse driving mechanism, and the second lifting assembly is installed on the longitudinal driving mechanism;

[0035] Adjusting the positions of the first bending wheel and the second bending wheel, specifically comprising:

[0036] Driving the bending assembly to move along the length direction of the base by the linear driving assembly to adjust the positions of the first bending wheel and the second bending wheel;

[0037] Driving the rotating disc to rotate by the rotating driving assembly to adjust the positions of the first bending wheel and the second bending wheel;

[0038] Driving the first bending wheel to move close to or away from the aviation tube by the first linear driving assembly;

[0039] Driving the second bending wheel to move close to or away from the aviation tube by the second linear driving assembly, or driving the second bending wheel to move close to or away from the aviation tube by the transverse driving mechanism and the longitudinal driving mechanism;

[0040] Exerting pressure on the aviation tube by the second bending wheel to make the aviation tube bend, specifically comprising:

[0041] Driving the rotating disc to rotate by the rotating driving assembly, the rotating disc drives the second bending wheel to rotate around the axis of the rotating disc when the rotating disc rotates, the second bending wheel exerts pressure on the aviation tube to make the aviation tube bend when the second bending wheel rotates, or controlling the driving speed of the transverse driving mechanism and the longitudinal driving mechanism to control the second bending wheel to exert pressure on the aviation tube according to a preset trajectory to make the aviation tube bend.

[0042] In an embodiment of the present application, the bending assembly further comprises a third bending wheel set and a fourth bending wheel set, the third bending wheel set comprises a third lifting assembly and a third bending wheel, the third lifting assembly is installed on the rotating disc, and the third lifting assembly is used to drive the third bending wheel to move up and down, the fourth bending wheel set comprises a fourth lifting assembly and a fourth bending wheel, the fourth lifting assembly is installed on the rotating disc, and the fourth lifting assembly is used to drive the fourth bending wheel to move up and down, the rotating driving assembly drives the rotating disc to rotate, and the rotating disc drives the first bending wheel set, the second bending wheel set, the third bending wheel set and the fourth bending wheel set to rotate around the axis of the rotating disc;

[0043] The linear driving assembly comprises a first driver, a front end seat, a rear end seat, a rotating screw and two guide rods, the two ends of the rotating screw and the guide rods are connected with the front end seat and the rear end seat respectively, the two guide rods are located on the two sides of the rotating screw respectively, and the first driver and the rotating screw are in transmission connection;

[0044] The seat body is in threaded cooperation with the rotating screw, the seat body is in sliding cooperation with the guide rods, the seat body is provided with an annular enclosing plate, the bending assembly is arranged in the annular enclosing plate, the rotating disc and the annular enclosing plate are coaxially arranged, and the projection of the axis of the aviation tube on the upper surface of the seat body is arranged to be staggered with the center of the annular enclosing plate;

[0045] The upper surface of the seat body is provided with a first counterweight cylinder and a second counterweight cylinder, the first counterweight cylinder and the second counterweight cylinder are located on the front side of the seat body, the first counterweight cylinder and the positioning wheel are respectively located on the two sides of the aviation pipe, and the first counterweight cylinder and the second counterweight cylinder are both provided with counterweight blocks;

[0046] The method further comprises:

[0047] When the rotation angle reaches the second angle, the position of the third bending wheel is adjusted based on the bending state of the bending position of the aviation pipe, the first bending wheel and the second bending wheel are controlled to descend by the first lifting assembly and the second lifting assembly respectively, and the third bending wheel is controlled to ascend by the third lifting assembly;

[0048] The rotating drive assembly drives the rotating disc to rotate, and the rotating disc drives the third bending wheel to rotate around the axis of the rotating disc when rotating, and the third bending wheel exerts pressure on the aviation pipe to cause the aviation pipe to bend when rotating;

[0049] When the rotation angle reaches the third angle, the position of the fourth bending wheel is adjusted based on the bending state of the bending position of the aviation pipe, the first bending wheel, the second bending wheel and the third bending wheel are controlled to descend by the first lifting assembly, the second lifting assembly and the third lifting assembly respectively, and the fourth bending wheel is controlled to ascend by the fourth lifting assembly;

[0050] The rotating drive assembly drives the rotating disc to rotate, and the rotating disc drives the fourth bending wheel to rotate around the axis of the rotating disc when rotating, and the fourth bending wheel exerts pressure on the aviation pipe to cause the aviation pipe to bend when rotating;

[0051] When the position of one or more of the first bending wheel, the second bending wheel, the third bending wheel and the fourth bending wheel is adjusted, the number of counterweight blocks in the first counterweight cylinder and the second counterweight cylinder is adjusted to ensure the balance of the bending assembly.

[0052] Compared with the prior art, the beneficial effects of the present application are:

[0053] In the above scheme of the present application, first, the aviation tube is supported by the pipeline support assembly, which can make the aviation tube installation and positioning more convenient and improve the stability of the aviation tube when bending. Second, the linear drive assembly can drive the bending assembly to move along the length direction of the base, so that the bending assembly can move to the specified bending position, and the position of the first bending wheel and the second bending wheel can also be fine-tuned by the linear drive assembly, which improves the positioning accuracy of the first bending wheel and the second bending wheel. Moreover, the bending assembly in the present application includes a seat body, a rotating disc, a rotating drive assembly, a positioning wheel set, a first bending wheel set and a second bending wheel set. The rotating disc is provided with a central hole, the lower end of the positioning rod is fixedly connected with the seat body, and the upper end extends out through the central hole and is connected with the positioning wheel. In this way, the rotating disc will not rotate when rotating, and the aviation tube can be bent around the positioning wheel. When the rotating drive assembly drives the rotating disc to rotate, it can drive the first bending wheel set and the second bending wheel set to rotate around the positioning wheel, so that the first bending wheel and / or the second bending wheel can exert pressure on the aviation tube, so that the aviation tube can be bent around the positioning wheel. When the aviation tube is bent, the second bending wheel can be lowered first by the second lifting assembly to avoid limiting the aviation tube by the second bending wheel, and then the first bending wheel can be used to exert pressure on the aviation tube to make the aviation tube bend. When the aviation tube is bent to a preset angle or the aviation tube appears abnormal stress, the position of the second bending wheel can be adjusted by the linear drive assembly and the rotating disc, and the second bending wheel can be raised by the second lifting assembly. Then, the second bending wheel alone can be used to bend the aviation tube, or the first bending wheel and the second bending wheel can be used to bend the aviation tube at the same time. When the above structure is adopted, the distance between the first bending wheel and the second bending wheel and the positioning wheel is different. By adopting three bending modes of the first bending wheel alone, the second bending wheel alone and the first bending wheel and the second bending wheel cooperating, the bending torque of the aviation tube can be adjusted, so that when the aviation tube is at a stress concentration position, the bending state of the aviation tube can be adjusted by changing the bending mode and the size of the torque, thereby reducing the probability of the aviation tube being concave and improving the yield of the aviation tube.

[0054] The present application will be further described in detail below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a schematic diagram of the bending equipment in the embodiment of the present application Figure 1 ;

[0056] Figure 2 is a schematic diagram of the bending equipment in the embodiment of the present application Figure 2 ;

[0057] Figure 3 is a schematic diagram of the bending equipment in the embodiment of the present application Figure 3 ;

[0058] Figure 4 is the front view of the bending device in the embodiment of the present application;

[0059] Figure 5 is the top view of the bending device in the embodiment of the present application;

[0060] Figure 6 is the side view of the bending device in the embodiment of the present application;

[0061] Figure 7 is the schematic diagram of the aviation tube when not being bent in the embodiment of the present application;

[0062] Figure 8 is the schematic diagram of the aviation tube being bent by the first bending wheel in the embodiment of the present application;

[0063] Figure 9 is the schematic diagram of the aviation tube being bent by the second bending wheel in the embodiment of the present application;

[0064] Figure 10 is the schematic diagram of the aviation tube being bent by the first bending wheel and the second bending wheel in the embodiment of the present application;

[0065] Figure 11 is the trajectory schematic diagram of the second bending wheel being driven by the variable trajectory driving assembly in the embodiment of the present application;

[0066] Figure 12 is the schematic diagram of the multi-section core ball assembly in the embodiment of the present application.

[0067] Figures: 1-base, 2-pipeline support assembly, 3-linear driving assembly, 31-first driver, 32-front end seat, 33-rear end seat, 34-rotary screw, 35-guide rod, 4-bending assembly, 41-seat body, 42-rotary disc, 43-positioning wheel set, 44-first bending wheel set, 45-second bending wheel set, 46-third bending wheel set, 47-fourth bending wheel set, 5-aviation tube, 6-inner support assembly, 61-multi-section core ball assembly, 7-first counterweight cylinder, 8-second counterweight cylinder. DETAILED DESCRIPTION

[0068] The present application will be further described in detail below in conjunction with specific embodiments, but the embodiments of the present application are not limited thereto.

[0069] Embodiment one:

[0070] Please refer to Figures 1 to 12The embodiment of the present application provides a concave-avoiding aviation pipe 5-way part bending equipment, which comprises a base 1, a pipe supporting assembly 2, a linear driving assembly 3 and a bending assembly 4, the pipe supporting assembly 2 and the linear driving assembly 3 are both installed on the base 1, the pipe supporting assembly 2 is used for supporting the aviation pipe 5, and the linear driving assembly 3 is used for driving the bending assembly 4 to move along the length direction of the base 1; the bending assembly 4 comprises a seat body 41, a rotating disc 42, a rotating driving assembly, a positioning wheel set 43, a first bending wheel set 44 and a second bending wheel set 45, the seat body 41 is installed on the linear driving assembly 3, the rotating disc 42 is rotationally connected with the seat body 41, the rotating driving assembly is used for driving the rotating disc 42 to rotate, the positioning wheel set 43 comprises a positioning rod and a positioning wheel, the rotating disc 42 is provided with a central hole, the lower end of the positioning rod is fixedly connected with the seat body 41, the upper end of the positioning rod extends out through the central hole and is connected with the positioning wheel, the first bending wheel set 44 comprises a first lifting assembly and a first bending wheel, the first lifting assembly is installed on the rotating disc 42, and the first lifting assembly is used for driving the first bending wheel to move up and down, the second bending wheel set 45 comprises a second lifting assembly and a second bending wheel, the second lifting assembly is installed on the rotating disc 42, and the second lifting assembly is used for driving the second bending wheel to move up and down, when the rotating driving assembly drives the rotating disc 42 to rotate, the rotating disc 42 drives the first bending wheel set 44 and the second bending wheel set 45 to rotate around the axis of the rotating disc 42, the distance between the first bending wheel and the second bending wheel and the positioning wheel is different, the aviation pipe 5 is located between the positioning wheel and the first bending wheel, and / or the aviation pipe 5 is located between the positioning wheel and the second bending wheel.

[0071] In some embodiments of the present application, as shown in Figure 1 、 Figure 2 and Figure 3 , the base 1 is a cuboid structure, the linear driving assembly 3 is installed on the upper surface of the base 1, and the two sides of the base 1 are both provided with mounting strips, a plurality of mounting holes are arranged on the mounting strips, and the mounting holes are long holes, so that the mounting position of the base 1 can be adjusted.

[0072] In some embodiments of the present application, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the pipe supporting assembly 2 comprises a frame body, the frame body is installed on the front end seat 32 of the linear driving assembly 3, the upper part of the frame body is provided with a through hole, an outer pipe is sleeved in the through hole, an inner pipe is sleeved in the outer pipe, the aviation pipe 5 is inserted into the inner pipe, and a pad plate is further arranged in the inner pipe and located between the outer wall of the aviation pipe 5 and the inner wall of the inner pipe, so that the stability of the aviation pipe 5 in installation is improved.

[0073] In some embodiments of the present application, as shown in Figure 2 and Figure 3As shown, the seat body 41 is provided with an annular fence, the rotating disc 42 is located in the annular fence, the rotating disc 42 is rotationally connected with the annular fence, the rotating disc 42 is fixed with a rotating rod below, the rotating rod and the rotating disc 42 are coaxially arranged, the rotating rod and the seat body 41 are rotationally connected through a bearing, the rotating driving assembly comprises a rotating motor, a worm wheel and a worm, the rotating motor is fixed on the base 1, the worm wheel is sleeved on the rotating rod, and the worm wheel is fixedly connected with the rotating rod, the worm wheel and the worm are engaged, the worm and the rotating motor are drivingly connected, when the rotating motor drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the rotating disc 42 to rotate through the rotating rod. Wherein, the rotating rod is provided with a middle shaft hole penetrating along the axial direction of the rotating rod, the middle shaft hole corresponds to the center hole on the rotating disc 42, and the positioning rod is fixedly connected with the base 1 through the center hole and the middle shaft hole.

[0074] In some embodiments of the present application, the first lifting assembly and the second lifting assembly are both common lifting structures, specifically, the first lifting assembly and the second lifting assembly in the present application both comprise a lifting motor, a lifting screw rod and a lifting sleeve, the lifting motor is fixed on the rotating disc 42, the lifting screw rod and the lifting motor are connected through a shaft coupling, the lifting sleeve is sleeved on the outside of the lifting screw rod, the inner wall of the lifting sleeve is provided with an internal thread, the lifting screw rod and the lifting sleeve are threadedly matched, when the lifting motor drives the lifting screw rod to rotate, the lifting screw rod drives the lifting sleeve to move along the axial direction to realize lifting, thereby driving the first bending wheel or the second bending wheel to move up and down. The lifting motor in the present embodiment can be a circular motor.

[0075] In some embodiments of the present application, the positioning wheel is rotationally connected with the positioning rod, the positioning wheel can freely rotate on the positioning rod, so as to further reduce the probability of the aviation tube 5 being concave when being bent. The first bending wheel is rotationally connected with the sleeve of the first lifting assembly, the first bending wheel can freely rotate on the sleeve of the first lifting assembly, so as to further reduce the probability of the aviation tube 5 being concave when being bent. The second bending wheel is rotationally connected with the sleeve of the second lifting assembly, the second bending wheel can freely rotate on the sleeve of the second lifting assembly, so as to further reduce the probability of the aviation tube 5 being concave when being bent.

[0076] In some embodiments of the present application, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the outer circumferential surface of the positioning wheel, the first bending wheel and the second bending wheel are all concave arc surfaces, which are matched with the outer circumferential surface of the aviation tube 5, so as to further reduce the probability of the aviation tube 5 being concave when being bent, and improve the yield and quality of the finished product of the aviation tube 5.

[0077] In some embodiments of the present application, as shown in Figures 7 to 9 , Figure 7Fig. 1 shows a schematic view of the aviation tube 5 in an unbent state, Figure 8 Fig. 2 shows a schematic view of the aviation tube 5 being bent by the first bending wheel alone, Figure 9 Fig. 3 shows a schematic view of the aviation tube 5 being bent by the second bending wheel alone, Figure 10 Fig. 4 shows a schematic view of the aviation tube 5 being bent by the first bending wheel and the second bending wheel simultaneously. When the aviation tube 5 is being bent, the bending mode can be adjusted according to the bent state of the aviation tube 5 to reduce the probability of the aviation tube 5 being concave.

[0078] In the above scheme of the application, first, the aviation tube 5 is supported by the pipeline support assembly 2, which can make the installation and positioning of the aviation tube 5 more convenient and improve the stability of the aviation tube 5 when it is bent. Second, the linear drive assembly 3 can drive the bending assembly 4 to move along the length direction of the base 1, so that the bending assembly 4 can move to a specified bending position, and the linear drive assembly 3 can also fine-tune the positions of the first bending wheel and the second bending wheel, thereby improving the positioning accuracy of the first bending wheel and the second bending wheel. Moreover, the bending assembly 4 in the application includes a seat body 41, a rotating disc 42, a rotating drive assembly, a positioning wheel set 43, a first bending wheel set 44, and a second bending wheel set 45. The rotating disc 42 is provided with a central hole, the lower end of the positioning rod is fixedly connected with the seat body 41, and the upper end extends out through the central hole and is connected with the positioning wheel. In this way, the rotating disc 42 will not rotate when it rotates, and the aviation tube 5 can be bent around the positioning wheel. When the rotating disc 42 is driven by the rotating drive assembly to rotate, it can drive the first bending wheel set 44 and the second bending wheel set 45 to rotate around the positioning wheel, so that the first bending wheel and / or the second bending wheel can exert pressure on the aviation tube 5, so that the aviation tube 5 can be bent around the positioning wheel. When the aviation tube 5 is bent, the second bending wheel can be first lowered by the second lifting assembly to avoid limiting the aviation tube 5, and then the first bending wheel can be used to exert pressure on the aviation tube 5 to cause the aviation tube 5 to bend. When the aviation tube 5 is bent to a preset angle or the aviation tube 5 abnormally stressed, the position of the second bending wheel can be adjusted by the linear drive assembly 3 and the rotating disc 42, and the second bending wheel can be raised by the second lifting assembly. Then, the aviation tube 5 can be bent by the second bending wheel alone or by the first bending wheel and the second bending wheel together. When the above structure is adopted, the distances between the first bending wheel, the second bending wheel, and the positioning wheel are different. By using the three bending methods of the first bending wheel alone, the second bending wheel alone, and the first bending wheel and the second bending wheel together, the bending moment of the aviation tube 5 can be adjusted. When the aviation tube 5 is prone to depression at a stress concentration position, the bending method and the size of the bending moment can be changed to adjust the bending state of the aviation tube 5, thereby reducing the probability of depression of the aviation tube 5 and improving the yield of the aviation tube 5.

[0079] In some embodiments of the application, as Figure 2 、 Figure 3 and Figure 5As shown, the first bending wheel set 44 further comprises a first linear driving assembly mounted on the upper surface of the rotary disc 42, and the first lifting assembly is mounted on the first linear driving assembly, and the first linear driving assembly is configured to drive the first lifting assembly to move along a direction perpendicular to the axis of the aviation tube 5, so as to drive the first bending wheel to move close to or away from the aviation tube 5. With this structure, the first lifting assembly can be driven to move along a direction perpendicular to the axis of the aviation tube 5 by the first linear driving assembly, so that the distance between the first bending wheel and the aviation tube 5 can be adjusted, which can not only avoid the aviation tube 5 and the first bending wheel from limiting each other when the first lifting assembly drives the first bending wheel to move up and down, but also can adjust the torque applied by the first bending wheel to the aviation tube 5, thereby further reducing the probability of the aviation tube 5 being concave and improving the yield of the aviation tube 5.

[0080] In an alternative way, as shown in Figure 2 、 Figure 3 and Figure 5 , the distance between the first bending wheel and the positioning wheel is smaller than the distance between the second bending wheel and the positioning wheel; the second bending wheel set 45 further comprises a second linear driving assembly mounted on the upper surface of the rotary disc 42, and the second lifting assembly is mounted on the second linear driving assembly, and the second linear driving assembly is configured to drive the second lifting assembly to move along a direction perpendicular to the axis of the aviation tube 5, so as to drive the second bending wheel to move close to or away from the aviation tube 5. With this structure, the second lifting assembly can be driven to move along a direction perpendicular to the axis of the aviation tube 5 by the second linear driving assembly, so that the distance between the second bending wheel and the aviation tube 5 can be adjusted, which can not only avoid the aviation tube 5 and the second bending wheel from limiting each other when the second lifting assembly drives the second bending wheel to move up and down, but also can adjust the torque applied by the second bending wheel to the aviation tube 5, thereby further reducing the probability of the aviation tube 5 being concave and improving the yield of the aviation tube 5.

[0081] In some embodiments of the present application, the first linear driving assembly and the second linear driving assembly each comprise a motor, a sliding block and a screw rod, the rotary disc 42 is provided with a guide rail, the sliding block and the guide rail are slidingly connected, the motor and the screw rod are drivingly connected, the sliding block and the screw rod are threadedly engaged, the first lifting assembly or the second lifting assembly is mounted on the sliding block, and when the motor drives the screw rod to rotate, the sliding block moves along a direction perpendicular to the axis of the aviation tube 5, so as to move close to or away from the aviation tube 5.

[0082] In another alternative way, as shown in Figure 11As shown, the bending device further comprises a variable trajectory driving assembly, the variable trajectory driving assembly comprises a transverse driving mechanism and a longitudinal driving mechanism, the transverse driving mechanism is arranged along the axis direction of the aviation tube 5, the longitudinal driving mechanism is arranged along the direction perpendicular to the axis direction of the aviation tube 5, the transverse driving mechanism is mounted on the upper surface of the rotating disc 42, the longitudinal driving mechanism is mounted on the transverse driving mechanism, and the second lifting assembly is mounted on the longitudinal driving mechanism. With the structure, the second lifting assembly can be driven to move along a non-circular trajectory, such as an elliptical trajectory, by the transverse driving mechanism and the longitudinal driving mechanism, so that the bending mode of the aviation tube 5 can be further optimized, the torque size applied by the first bending wheel to the aviation tube 5 can be adjusted in real time, the probability of the aviation tube 5 being concave is further reduced, and the yield of the aviation tube 5 is improved.

[0083] In some embodiments of the present application, the transverse driving mechanism and the longitudinal driving mechanism are both common linear driving mechanisms, the transverse driving mechanism and the longitudinal driving mechanism in the embodiments both comprise a motor, a screw rod and a sliding block, the motor and the screw rod are in transmission connection, the screw rod and the sliding block are in threaded cooperation, and the motor can drive the second bending wheel to move along a non-circular trajectory when the screw rod rotates.

[0084] In some embodiments of the present application, as Figures 1 to 11As shown, the bending assembly 4 further comprises a third bending wheel set 46 and a fourth bending wheel set 47, the third bending wheel set 46 comprising a third lifting assembly and a third bending wheel, the third lifting assembly being mounted on the rotating disc 42 and being used to drive the third bending wheel to perform lifting movement, the fourth bending wheel set 47 comprising a fourth lifting assembly and a fourth bending wheel, the fourth lifting assembly being mounted on the rotating disc 42 and being used to drive the fourth bending wheel to perform lifting movement, when the rotating driving assembly drives the rotating disc 42 to rotate, the rotating disc 42 drives the first bending wheel set 44, the second bending wheel set 45, the third bending wheel set 46 and the fourth bending wheel set 47 to rotate around the axis of the rotating disc 42; the first bending wheel, the second bending wheel, the third bending wheel and the fourth bending wheel are sequentially distributed along the circumference of the rotating disc 42, the distance between the second bending wheel and the positioning wheel is less than the distance between the third bending wheel and the positioning wheel; the distance between the third bending wheel and the positioning wheel is less than the distance between the fourth bending wheel and the positioning wheel and the distance between the second bending wheel and the positioning wheel, and the distance between the third bending wheel and the positioning wheel is greater than the outer diameter of the aviation pipe 5. With this structure, the distances between the first bending wheel set 44, the second bending wheel set 45, the third bending wheel set 46 and the fourth bending wheel set 47 and the positioning wheel are all different, the third bending wheel is driven to lift by the third lifting assembly, and the fourth bending wheel is driven to lift by the fourth lifting assembly, so that when the aviation pipe 5 is bent to different angles, the third bending wheel and the fourth bending wheel can be used to bend the aviation pipe 5, so that the moment of the aviation pipe 5 during bending can be adjusted, so that when the aviation pipe 5 is in a stress concentration position, the bending state of the aviation pipe 5 can be adjusted by changing the bending mode and the size of the moment, so that the probability of the aviation pipe 5 being concave can be reduced, and the yield of the aviation pipe 5 can be improved. Through the cooperation of the first bending wheel, the second bending wheel, the third bending wheel and the fourth bending wheel, the bending mode of the aviation pipe 5 can be fully optimized, so that when the aviation pipe 5 is in different bending states, different bending wheels can be used to bend the aviation pipe 5, further reducing the probability of the aviation pipe 5 being concave and improving the yield of the aviation pipe 5.

[0085] In some embodiments of the present application, the structures of the third lifting assembly and the fourth lifting assembly are the same as those of the first lifting assembly, and the structures of the third bending wheel and the fourth bending wheel are the same as those of the first bending wheel.

[0086] In some embodiments of this application, the linear drive assembly 3 includes a first driver 31, a front end seat 32, a rear end seat 33, a rotating lead screw 34, and two guide rods 35. The two ends of the rotating lead screw 34 and the guide rods 35 are respectively connected to the front end seat 32 and the rear end seat 33. The two guide rods 35 are respectively located at the two ends of the rotating lead screw 34. The first driver 31 and the rotating lead screw 34 are connected in a transmission manner. The seat body 41 is threadedly engaged with the rotating lead screw 34 and slidably engaged with the guide rods 35. The seat body 41 is provided with an annular surrounding plate. The bending assembly 4 is disposed inside the annular surrounding plate. The turntable 42 and the annular surrounding plate are coaxially arranged. The projection of the axis of the aviation tube 5 onto the upper surface of the seat body 41 is offset from the center of the annular surrounding plate. The upper surface of the seat body 41 is provided with a first counterweight cylinder 7 and a second counterweight cylinder 8. The first counterweight cylinder 7 and the second counterweight cylinder 8 are located on the front side of the seat body 41. The first counterweight cylinder 7 and the positioning wheel are respectively located on both sides of the aviation tube 5. The first counterweight cylinder 7 and the second counterweight cylinder 8 are each provided with a counterweight block. With this structure, when the first driver 31 drives the lead screw to rotate, the bending assembly 4 can move along the length of the base 1. Because the distances between the first bending wheel group 44, the second bending wheel group 45, the third bending wheel group 46, and the fourth bending wheel group 47 and the positioning wheel are all different, and the rotation center of the turntable 42 is misaligned with the aviation tube 5, a shift in the center of gravity occurs when different bending wheels are used to bend the aviation tube 5, affecting the bending effect of the aviation tube 5. This application uses counterweights in the first and second counterweight cylinders 7 and 8 to adjust the center of gravity of the bending assembly 4, thereby further improving the yield and quality of the aviation tube 5.

[0087] In some embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 12As shown, the bending device further comprises an inner support assembly 6, which comprises a mounting frame fixed to the base 1, a second driver fixed to the mounting frame, a lead screw in transmission connection with the second driver, a sleeve sleeved outside the lead screw, the lead screw and the sleeve being in threaded cooperation, a connecting rod having one end connected with the sleeve and the other end connected with a multi-joint core ball assembly 61, and the end of the sleeve extending into the aviation pipe 5, the lead screw, the sleeve and the aviation pipe 5 being coaxially arranged; the multi-joint core ball assembly 61 comprises a plurality of spherical bodies, adjacent two spherical bodies being connected with a hinged rod having two ends hingedly connected with the adjacent two spherical bodies respectively, and a pressure sensor being arranged on the outer circumferential surface of the spherical body. With this structure, the interior of the aviation pipe 5 can be supported by the spherical bodies, further avoiding the concave of the aviation pipe 5 and improving the yield of the aviation pipe 5. Moreover, the stress state of the aviation pipe 5 can be detected by the pressure sensor, so that different bending modes can be changed in real time based on different pressure values, that is, the aviation pipe is bent by different bending wheels, so as to further improve the yield and quality of the aviation pipe 5.

[0088] Embodiment two:

[0089] The embodiment of the present application also provides a method for bending an aviation pipe part avoiding concave, comprising the bending device for aviation pipe part avoiding concave provided in the above embodiment one, the bending device comprising a base, a pipe support assembly, a linear driving assembly and a bending assembly, the bending assembly comprising a seat body, a rotating disc, a rotating driving assembly, a positioning wheel set, a first bending wheel set and a second bending wheel set, the positioning wheel set comprising a positioning rod and a positioning wheel, the first bending wheel set comprising a first lifting assembly and a first bending wheel, and the second bending wheel set comprising a second lifting assembly and a second bending wheel.

[0090] The method comprises:

[0091] The first bending wheel is driven to rise by the first lifting assembly, so that the first bending wheel and the positioning wheel are located at the same height.

[0092] The second bending wheel is driven to descend by the second lifting assembly, so that the upper surface of the second bending wheel is lower than the lower surface of the first bending wheel.

[0093] The aviation pipe is installed on the pipe support assembly and is inserted between the positioning wheel and the first bending wheel.

[0094] The bending assembly is driven to move along the length direction of the base by the linear driving assembly, so as to drive the positioning wheel and the first bending wheel to move to the preset bending position of the aviation pipe.

[0095] The rotating disc is driven to rotate by the rotating driving assembly, the rotating disc drives the first bending wheel to rotate around the axis of the rotating disc when rotating, and the first bending wheel exerts pressure on the aviation pipe to make the aviation pipe bend when rotating.

[0096] The rotation angle of the rotating disc is recorded and the bending state of the bending part of the aviation pipe is detected. Specifically, an angle sensor can be arranged on the rotating disc to detect the rotation angle of the rotating disc.

[0097] When the rotation angle reaches the first angle, the positions of the first bending wheel and the second bending wheel are adjusted based on the bending state of the bending part of the aviation pipe, and the second bending wheel is driven to rise by the second lifting assembly, so that the second bending wheel and the positioning wheel are located at the same height.

[0098] The aviation pipe is bent by the second bending wheel applying pressure to the aviation pipe, or the aviation pipe is bent by the first bending wheel and the second bending wheel simultaneously applying pressure to the aviation pipe.

[0099] The beneficial effects of the second embodiment and various implementation manners thereof can be analyzed with reference to the beneficial effects of the first embodiment and various implementation manners thereof, which will not be repeated here.

[0100] In some embodiments of the present application, the first bending wheel set further comprises a first linear driving assembly installed on the upper surface of the rotating disc, the first lifting assembly is installed on the first linear driving assembly, and the first linear driving assembly is used to drive the first lifting assembly to move in a direction perpendicular to the axis of the aviation pipe, so as to drive the first bending wheel to approach or move away from the aviation pipe; the distance between the first bending wheel and the positioning wheel is smaller than the distance between the second bending wheel and the positioning wheel, and the second bending wheel set further comprises a second linear driving assembly installed on the upper surface of the rotating disc, the second lifting assembly is installed on the second linear driving assembly, and the second linear driving assembly is used to drive the second lifting assembly to move in a direction perpendicular to the axis of the aviation pipe, so as to drive the second bending wheel to approach or move away from the aviation pipe.

[0101] Alternatively, the bending device further comprises a variable trajectory driving assembly, the variable trajectory driving assembly comprises a transverse driving mechanism and a longitudinal driving mechanism, the transverse driving mechanism is arranged in the axis direction of the aviation pipe, the longitudinal driving mechanism is arranged in the direction perpendicular to the axis of the aviation pipe, the transverse driving mechanism is installed on the upper surface of the rotating disc, the longitudinal driving mechanism is installed on the transverse driving mechanism, and the second lifting assembly is installed on the longitudinal driving mechanism.

[0102] Adjusting the positions of the first bending wheel and the second bending wheel specifically includes:

[0103] The bending assembly is driven to move along the length direction of the base by the linear driving assembly, so as to adjust the positions of the first bending wheel and the second bending wheel.

[0104] The rotating disc is driven to rotate by the rotating driving assembly, so as to adjust the positions of the first bending wheel and the second bending wheel.

[0105] The first bending wheel is driven by the first linear driving assembly to move close to or away from the aviation tube;

[0106] The second bending wheel is driven by the second linear driving assembly to move close to or away from the aviation tube, or the second bending wheel is driven by the transverse driving mechanism and the longitudinal driving mechanism to move close to or away from the aviation tube;

[0107] The aviation tube is bent by the second bending wheel, specifically including:

[0108] The rotating driving assembly drives the rotating disc to rotate, and the rotating disc drives the second bending wheel to rotate around the axis of the rotating disc when the rotating disc rotates, and the second bending wheel exerts pressure on the aviation tube to bend the aviation tube, or the driving speed of the transverse driving mechanism and the longitudinal driving mechanism is controlled to control the second bending wheel to exert pressure on the aviation tube according to a preset trajectory to bend the aviation tube. In this way, the movement of the first bending wheel and the second bending wheel can be accurately controlled, so that the bending mode of the aviation tube can be accurately controlled, and the yield and quality of the finished product can be improved.

[0109] In some embodiments of the present application, the bending assembly further comprises a third bending wheel group and a fourth bending wheel group, the third bending wheel group comprises a third lifting assembly and a third bending wheel, the third lifting assembly is installed on the rotating disc, and the third lifting assembly is used to drive the third bending wheel to move up and down, the fourth bending wheel group comprises a fourth lifting assembly and a fourth bending wheel, the fourth lifting assembly is installed on the rotating disc, and the fourth lifting assembly is used to drive the fourth bending wheel to move up and down, and when the rotating driving assembly drives the rotating disc to rotate, the rotating disc drives the first bending wheel group, the second bending wheel group, the third bending wheel group and the fourth bending wheel group to rotate around the axis of the rotating disc;

[0110] The linear driving assembly comprises a first driver, a front end seat, a rear end seat, a rotating screw and two guide rods, the two ends of the rotating screw and the guide rods are respectively connected with the front end seat and the rear end seat, the two guide rods are respectively located on the two sides of the rotating screw, and the first driver and the rotating screw are in transmission connection;

[0111] The seat body is in threaded cooperation with the rotating screw, and the seat body is in sliding cooperation with the guide rods, the seat body is provided with an annular surrounding plate, the bending assembly is arranged in the annular surrounding plate, the rotating disc and the annular surrounding plate are coaxially arranged, and the projection of the axis of the aviation tube on the upper surface of the seat body is arranged to be staggered with the center of the annular surrounding plate;

[0112] The upper surface of the seat body is provided with a first counterweight cylinder and a second counterweight cylinder, the first counterweight cylinder and the second counterweight cylinder are located on the front side of the seat body, the first counterweight cylinder and the positioning wheel are respectively located on the two sides of the aviation tube, and the first counterweight cylinder and the second counterweight cylinder are both provided with counterweight blocks;

[0113] The method further comprises:

[0114] When the rotation angle reaches the second angle, the position of the third bending wheel is adjusted based on the bending state of the bending position of the aviation tube, and the first bending wheel and the second bending wheel are controlled to descend by the first lifting assembly and the second lifting assembly respectively, and the third bending wheel is controlled to ascend by the third lifting assembly;

[0115] The rotating drive assembly drives the rotating disc to rotate, and the rotating disc drives the third bending wheel to rotate around the axis of the rotating disc when rotating, and the third bending wheel exerts pressure on the aviation tube to cause the aviation tube to bend when rotating;

[0116] When the rotation angle reaches the third angle, the position of the fourth bending wheel is adjusted based on the bending state of the bending position of the aviation tube, and the first bending wheel, the second bending wheel and the third bending wheel are controlled to descend by the first lifting assembly, the second lifting assembly and the third lifting assembly respectively, and the fourth bending wheel is controlled to ascend by the fourth lifting assembly;

[0117] The rotating drive assembly drives the rotating disc to rotate, and the rotating disc drives the fourth bending wheel to rotate around the axis of the rotating disc when rotating, and the fourth bending wheel exerts pressure on the aviation tube to cause the aviation tube to bend when rotating;

[0118] When the position of one or more of the first bending wheel, the second bending wheel, the third bending wheel and the fourth bending wheel is adjusted, the number of counterweight blocks in the first counterweight cylinder and the second counterweight cylinder is adjusted to ensure the balance of the bending assembly. In this way, the movement of the third bending wheel and the fourth bending wheel can be accurately controlled, so that the bending mode of the aviation tube can be accurately controlled, and the yield and quality of the finished product of the aviation tube can be improved. Moreover, by adjusting the number of counterweight blocks in the first counterweight cylinder and the second counterweight cylinder, the center of gravity of the bending assembly can be adjusted, so that the yield and quality of the finished product of the aviation tube can be further improved.

[0119] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0120] In addition, the terms "first", "second", etc. are used only for the purpose of description and do not imply or imply relative importance or imply the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0121] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0122] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be considered as limiting the specific implementation of the present application to these descriptions. For those skilled in the art, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as falling within the scope of protection of the present application.

Claims

1. An aircraft tubing component bending apparatus that avoids dishing, characterized by, The application relates to an aviation pipe bending device, which comprises a base, a pipeline support assembly, a linear driving assembly and a bending assembly, wherein the pipeline support assembly and the linear driving assembly are both mounted on the base, the pipeline support assembly is used for supporting an aviation pipe, and the linear driving assembly is used for driving the bending assembly to move along the length direction of the base. The bending assembly comprises a seat body, a rotating disc, a rotating driving assembly, a positioning wheel set, a first bending wheel set and a second bending wheel set, the seat body is mounted on the linear driving assembly, the rotating disc is rotationally connected with the seat body, the rotating driving assembly is used for driving the rotating disc to rotate, the positioning wheel set comprises a positioning rod and a positioning wheel, a center hole is arranged on the rotating disc, the lower end of the positioning rod is fixedly connected with the seat body, the upper end of the positioning rod extends out through the center hole and is connected with the positioning wheel. The first bending wheel set comprises a first lifting assembly and a first bending wheel, the first lifting assembly is mounted on the rotating disc, the first lifting assembly is used for driving the first bending wheel to make lifting movement, the second bending wheel set comprises a second lifting assembly and a second bending wheel, the second lifting assembly is mounted on the rotating disc, the second lifting assembly is used for driving the second bending wheel to make lifting movement, and when the rotating driving assembly drives the rotating disc to rotate, the rotating disc drives the first bending wheel set and the second bending wheel set to rotate around the axis of the rotating disc. The distance between the first bending wheel and the second bending wheel and the positioning wheel is different, the aviation pipe is located between the positioning wheel and the first bending wheel, and / or the aviation pipe is located between the positioning wheel and the second bending wheel. The linear driving assembly comprises a first driver, a front end seat, a rear end seat, a rotating screw rod and two guide rods, the two ends of the rotating screw rod and the guide rods are respectively connected with the front end seat and the rear end seat, the two guide rods are respectively located on the two sides of the rotating screw rod, and the first driver and the rotating screw rod are in transmission connection. The seat body is in screw thread cooperation with the rotating screw rod, the seat body is in sliding cooperation with the guide rods, an annular surrounding plate is arranged on the seat body, the bending assembly is arranged in the annular surrounding plate, the rotating disc and the annular surrounding plate are coaxially arranged, and the projection of the axis of the aviation pipe on the upper surface of the seat body is arranged in a staggered mode with the center of the annular surrounding plate. First and second counterweight cylinders are arranged on the upper surface of the seat body, the first and second counterweight cylinders are located on the front side of the seat body, the first counterweight cylinder and the positioning wheel are respectively located on the two sides of the aviation pipe, and counterweight blocks are arranged in the first and second counterweight cylinders. The bending device further comprises an inner supporting assembly, which comprises a mounting frame, a second driver, a screw rod, a sleeve, a connecting rod and a multi-joint core ball assembly, the mounting frame is fixed on the base, the second driver is fixed on the mounting frame, the second driver is in transmission connection with the screw rod, the sleeve is sleeved on the outside of the screw rod, and the screw rod and the sleeve are in screwing cooperation, one end of the connecting rod is connected with the sleeve, and the other end is connected with the multi-joint core ball assembly, the end of the sleeve extends into the aviation pipe, and the screw rod, the sleeve and the aviation pipe are coaxially arranged; The multi-joint core ball assembly comprises a plurality of spherical bodies, and a hinged rod is connected between adjacent two spherical bodies, and the two ends of the hinged rod are hinged with adjacent two spherical bodies respectively; A pressure sensor is arranged on the outer circumferential surface of the spherical body.

2. The aircraft tubing component bend-avoiding apparatus of claim 1, wherein, The first bending wheel set further comprises a first linear driving assembly, the first linear driving assembly is installed on the upper surface of the rotating disc, the first lifting assembly is installed on the first linear driving assembly, and the first linear driving assembly is used for driving the first lifting assembly to move in the direction perpendicular to the aviation pipe axis, so as to drive the first bending wheel to approach or move away from the aviation pipe.

3. The aircraft tubing component bend-avoiding apparatus of claim 2, wherein, The distance between the first bending wheel and the positioning wheel is smaller than the distance between the second bending wheel and the positioning wheel. The second bending wheel set further comprises a second linear driving assembly, the second linear driving assembly is installed on the upper surface of the rotating disc, the second lifting assembly is installed on the second linear driving assembly, and the second linear driving assembly is used for driving the second lifting assembly to move in the direction perpendicular to the aviation pipe axis, so as to drive the second bending wheel to approach or move away from the aviation pipe.

4. The aircraft tubing component bend-avoiding apparatus of claim 3, wherein, The bending assembly further comprises a third bending wheel set and a fourth bending wheel set, the third bending wheel set comprises a third lifting assembly and a third bending wheel, the third lifting assembly is installed on the rotating disc, and the third lifting assembly is used for driving the third bending wheel to move up and down, the fourth bending wheel set comprises a fourth lifting assembly and a fourth bending wheel, the fourth lifting assembly is installed on the rotating disc, and the fourth lifting assembly is used for driving the fourth bending wheel to move up and down, when the rotating driving assembly drives the rotating disc to rotate, the rotating disc drives the first bending wheel set, the second bending wheel set, the third bending wheel set and the fourth bending wheel set to rotate around the axis of the rotating disc; The first bending wheel, the second bending wheel, the third bending wheel and the fourth bending wheel are sequentially distributed along the circumference of the rotating disc, the distance between the second bending wheel and the positioning wheel is smaller than the distance between the third bending wheel and the positioning wheel; The distance between the third bending wheel and the positioning wheel is smaller than the distance between the fourth bending wheel and the second bending wheel and the positioning wheel, and the distance between the third bending wheel and the positioning wheel is greater than the outer diameter of the aviation pipe.

5. The aircraft tubing component bend-avoiding dishing apparatus of claim 2, wherein, The variable trajectory driving assembly comprises a transverse driving mechanism arranged along the axial direction of the aviation tube and a longitudinal driving mechanism arranged along the direction perpendicular to the axial direction of the aviation tube, the transverse driving mechanism is mounted on the upper surface of the rotary disc, and the longitudinal driving mechanism is mounted on the transverse driving mechanism, and the second lifting assembly is mounted on the longitudinal driving mechanism.

6. A method of avoiding dishing in bending of an aircraft tubing component, comprising: The bending device for avoiding concave aviation tube parts comprises a base, a tube supporting assembly, a linear driving assembly and a bending assembly, the bending assembly comprises a seat body, a rotary disc, a rotary driving assembly, a positioning wheel set, a first bending wheel set and a second bending wheel set, the positioning wheel set comprises a positioning rod and a positioning wheel, the first bending wheel set comprises a first lifting assembly and a first bending wheel, and the second bending wheel set comprises a second lifting assembly and a second bending wheel; The method comprises: driving the first bending wheel to rise through the first lifting assembly so that the first bending wheel and the positioning wheel are at the same height; driving the second bending wheel to descend through the second lifting assembly so that the upper surface of the second bending wheel is lower than the lower surface of the first bending wheel; mounting the aviation tube on the tube supporting assembly and inserting the aviation tube between the positioning wheel and the first bending wheel; driving the bending assembly to move along the length direction of the base through the linear driving assembly to drive the positioning wheel and the first bending wheel to move to the preset bending position of the aviation tube; driving the rotary disc to rotate through the rotary driving assembly, the rotary disc rotates to drive the first bending wheel to rotate around the axis of the rotary disc, and the first bending wheel rotates to apply pressure to the aviation tube to bend the aviation tube; recording the rotation angle of the rotary disc and detecting the bending state of the bent part of the aviation tube; when the rotation angle reaches a first angle, adjusting the positions of the first bending wheel and the second bending wheel based on the bending state of the bent part of the aviation tube, driving the second bending wheel to rise through the second lifting assembly so that the second bending wheel and the positioning wheel are at the same height; applying pressure to the aviation tube through the second bending wheel to bend the aviation tube, or applying pressure to the aviation tube through the first bending wheel and the second bending wheel at the same time to bend the aviation tube.

7. The method of claim 6, wherein, The first bending wheel set further comprises a first linear driving assembly mounted on the upper surface of the rotary disc, the first lifting assembly is mounted on the first linear driving assembly, and the first linear driving assembly is used to drive the first lifting assembly to move along the direction perpendicular to the axis of the aviation tube to drive the first bending wheel to approach or move away from the aviation tube. The distance between the first bending wheel and the positioning wheel is less than the distance between the second bending wheel and the positioning wheel, the second bending wheel set further comprises a second linear driving assembly, the second linear driving assembly is installed on the upper surface of the rotating disc, the second lifting assembly is installed on the second linear driving assembly, and the second linear driving assembly is used to drive the second lifting assembly to move in the direction perpendicular to the axis of the aviation pipe, so as to drive the second bending wheel to move close to or away from the aviation pipe; Or, further comprising a variable trajectory driving assembly, the variable trajectory driving assembly comprises a transverse driving mechanism and a longitudinal driving mechanism, the transverse driving mechanism is arranged in the axis direction of the aviation pipe, the longitudinal driving mechanism is arranged in the direction perpendicular to the axis of the aviation pipe, the transverse driving mechanism is installed on the upper surface of the rotating disc, the longitudinal driving mechanism is installed on the transverse driving mechanism, and the second lifting assembly is installed on the longitudinal driving mechanism; The position adjustment of the first bending wheel and the second bending wheel specifically comprises: The straight line driving assembly is used to drive the bending assembly to move along the length direction of the base, so as to adjust the position of the first bending wheel and the second bending wheel; The rotating disc is driven to rotate by the rotating driving assembly, so as to adjust the position of the first bending wheel and the second bending wheel; The first bending wheel is driven to move close to or away from the aviation pipe by the first linear driving assembly; The second bending wheel is driven to move close to or away from the aviation pipe by the second linear driving assembly, or the second bending wheel is driven to move close to or away from the aviation pipe by the transverse driving mechanism and the longitudinal driving mechanism; The second bending wheel is driven to rotate around the axis of the rotating disc when the rotating disc rotates, and the second bending wheel rotates to apply pressure to the aviation pipe to bend the aviation pipe, or the driving speed of the transverse driving mechanism and the longitudinal driving mechanism is controlled to control the second bending wheel to apply pressure to the aviation pipe according to the preset trajectory to bend the aviation pipe. The bending assembly further comprises a third bending wheel set and a fourth bending wheel set, the third bending wheel set comprises a third lifting assembly and a third bending wheel, the third lifting assembly is installed on the rotating disc, and the third lifting assembly is used to drive the third bending wheel to move up and down; the fourth bending wheel set comprises a fourth lifting assembly and a fourth bending wheel, the fourth lifting assembly is installed on the rotating disc, and the fourth lifting assembly is used to drive the fourth bending wheel to move up and down; when the rotating disc is driven to rotate by the rotating driving assembly, the rotating disc drives the first bending wheel set, the second bending wheel set, the third bending wheel set and the fourth bending wheel set to rotate around the axis of the rotating disc; 8. The method of claim 7, wherein, ​ The straight line driving assembly comprises a first driver, a front end seat, a rear end seat, a rotating screw rod and two guide rods, two ends of the rotating screw rod and the guide rods are connected with the front end seat and the rear end seat respectively, the two guide rods are located on two sides of the rotating screw rod respectively, and the first driver and the rotating screw rod are in transmission connection; The seat body is in threaded cooperation with the rotating screw rod, the seat body is in sliding cooperation with the guide rods, an annular surrounding plate is arranged on the seat body, the bending assembly is arranged in the annular surrounding plate, the rotating disc and the annular surrounding plate are coaxially arranged, and the projection of the axis of the aviation pipe on the upper surface of the seat body is arranged in a staggered mode with the center of the annular surrounding plate; First and second counterweight cylinders are arranged on the upper surface of the seat body, the first and second counterweight cylinders are located on the front side of the seat body, the first and second counterweight cylinders are located on two sides of the aviation pipe respectively, and counterweight blocks are arranged in the first and second counterweight cylinders; The method further comprises: When the rotation angle reaches a second angle, the position of the third bending wheel is adjusted based on the bending state of the bending part of the aviation pipe, the first and second bending wheels are controlled to descend by the first and second lifting assemblies respectively, and the third bending wheel is controlled to ascend by the third lifting assembly; The rotating disc is driven to rotate by the rotating driving assembly, the third bending wheel is driven to rotate around the axis of the rotating disc when the rotating disc rotates, and the aviation pipe is bent by the pressure applied by the third bending wheel when the third bending wheel rotates; When the rotation angle reaches a third angle, the position of the fourth bending wheel is adjusted based on the bending state of the bending part of the aviation pipe, the first, second and third bending wheels are controlled to descend by the first, second and third lifting assemblies respectively, and the fourth bending wheel is controlled to ascend by the fourth lifting assembly; The rotating disc is driven to rotate by the rotating driving assembly, the fourth bending wheel is driven to rotate around the axis of the rotating disc when the rotating disc rotates, and the aviation pipe is bent by the pressure applied by the fourth bending wheel when the fourth bending wheel rotates; When the position of one or more of the first, second, third and fourth bending wheels is adjusted, the number of counterweight blocks in the first and second counterweight cylinders is adjusted to ensure the balance of the bending assembly.

Images