A numerically controlled double-arc bending device

Abstract

The present invention discloses a numerically controlled double-arc bending device, aiming to solve the deficiency that the products processed by the bending devices in the prior art are of a single type. The present invention solves the above technical problems through the following technical solutions: It includes a fixed shaft and a rotating shaft. A through hole is provided along the axial direction at the center of the rotating shaft, and the fixed shaft is inserted into the through hole. A curling head is provided at the top of the rotating shaft, and a bending column is provided on the end face of the curling head. A bending column is provided on the end face of the fixed shaft. The bending column includes a first bending column and a second bending column, and the diameter of the first bending column is larger than that of the second bending column. By providing the bending column and the bending column, different types of products can be processed during processing through the cooperation between the two. At the same time, according to the degree of bending of the product, large-angle bending of the product can be performed through the cooperation between the first bending column and the second bending column, so as to reduce the damage to the product caused by a single large-angle bending.

Description

Technical Field

[0001] The present invention relates to the technical field of bending processing, and more specifically, it relates to a numerically controlled double-arc bending device. Background Art

[0002] In the field of machining technology, bent parts are widely used in various fields, such as bent steel bars and bent plates. The products produced by the bending devices in the prior art have a single structure and are difficult to meet the increasing production requirements.

[0003] Chinese Patent Publication No. CN 208495666U, publication date February 15, 2019, the name of the invention is a double-curling device on a spring machine. This application discloses a double-curling device on a spring machine. In the above device, by setting a first motor and a second motor, the curling head is driven to rotate by the first motor, and the driving turntable and the folding cutter head are driven to rotate by the second motor. When bending in the above application, through the rolling of the bearing, it is possible to avoid wire scratching and squeezing caused during pickled vegetable conveying; however, it can only process one type of Z-shaped wire and cannot process wires of other shapes, resulting in relatively single products produced. Summary of the Invention

[0004] The present invention overcomes the deficiency that the products processed by the bending devices in the prior art are of a single type, and provides a numerically controlled double-arc bending device. Through the combination of numerical control technology, it can bend products of different shapes.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: A numerically controlled double-arc bending device, comprising: a fixed shaft and a rotating shaft. A through hole is axially provided in the center of the rotating shaft, and the fixed shaft is inserted into the through hole; a curling head is provided at the top of the rotating shaft, a bending column is provided on the end face of the curling head, a bending column is provided on the end face of the fixed shaft, the bending column includes a first bending column and a second bending column, and the diameter of the first bending column is greater than the diameter of the second bending column.

[0006] The present invention sets a bending column on the top of the curling head and a bending column on the fixed shaft. During use, the rotating shaft drives the curling head to rotate, so that through the cooperation between the two, different types of products can be processed during processing. At the same time, according to the degree of bending of the product, the product can be bent at a large angle through the cooperation between the first bending column and the second bending column, reducing the damage to the product caused by a single large-angle bending. Therefore, through the cooperation between the bending column and the bending column, the present invention can realize the bending of different products, improve the types of products produced, and meet the processing requirements of different bent parts.

[0007] Preferably, the fixed shaft is connected with a first telescopic device, which includes a first telescopic plate and a first telescopic motor. The first telescopic plate is fixedly arranged at one end of the fixed shaft away from the bending column. The output end of the first telescopic motor is connected with a first rotating shaft. A first mounting hole is arranged on the first telescopic plate, and the first rotating shaft is arranged through the first mounting hole.

[0008] The first telescopic device drives the fixed shaft to perform telescopic sliding, so that the bending column at the end of the fixed shaft can cooperate with parts for processing.

[0009] Preferably, the rotating shaft is connected with a rotating device, which includes a rotating gear arranged on the rotating shaft, a driving gear meshed with the rotating gear, and a rotating motor driving the driving gear to rotate.

[0010] The transmission between the rotating motor through the driving gear and the driven gear simplifies the transmission structure and improves the transmission efficiency.

[0011] Preferably, the rotating shaft is connected with a second telescopic device, which includes a second telescopic plate connected with the rotating shaft and a second telescopic motor. The output end of the second telescopic motor is connected with a second rotating shaft. A second mounting hole is arranged on the second telescopic plate, and the second rotating shaft is arranged through the second mounting hole.

[0012] The second telescopic device drives the rotating shaft to perform telescopic sliding, so that the curling head at the end of the rotating shaft can be telescopic to cooperate with the processing of different types of parts.

[0013] Preferably, a mounting sleeve is fixedly arranged on the end face of the rotating shaft close to the bending column, and the curling head is fixedly arranged on the end face of the mounting sleeve.

[0014] The connection between the curling head and the mounting sleeve enables the curling head to be replaced.

[0015] Preferably, a sliding bushing is arranged on the side wall of the through hole.

[0016] The sliding bushing can reduce the friction between the rotating shaft and the fixed shaft.

[0017] Preferably, it further includes a first mounting shell and a second mounting shell. The rotating shaft is arranged in the first mounting shell. One end of the rotating shaft is located in the second mounting shell, and the other end of the rotating shaft extends out of the first mounting shell; the first telescopic plate is arranged in the second mounting shell. A guide post is arranged in the second mounting shell. The guide post is arranged parallel to the rotating shaft. A guide hole is arranged on the first telescopic plate, and the guide post is arranged through the guide hole.

[0018] The cooperation between the guide hole and the guide post makes the sliding of the first telescopic plate more stable.

[0019] Preferably, the first mounting shell is fixedly connected with a mounting plate. One end of the mounting plate away from the first mounting shell is fixedly connected with a rotating disc, and the bending column is on the central axis of rotation of the rotating disc.

[0020] The rotating disc drives the mounting plate to rotate, so that the rotating disc drives the mounting plate to rotate, and the mounting plate drives the first mounting shell to rotate, thereby realizing the adjustment of the positions of the bending head and the folding head in the circumferential direction of the steel bar, so that the steel bar can be bent in different directions.

[0021] Preferably, a first annular groove is provided on the end face of the first telescopic plate close to the curling head. The first annular groove is arranged along the circumferential direction of the fixed shaft. A second annular groove is arranged in the circumferential direction of the guide hole. The first annular groove and the second annular groove are communicated through a first oil guide channel; both ends of the guide post are respectively connected with the first mounting shell and the second mounting shell. A third annular groove is provided on the end face of the second mounting shell close to the guide post. The third annular groove is arranged in the circumferential direction of the guide post; an oil return hole is arranged in the shell of the second mounting shell, and an oil return device is arranged in the oil return hole. The oil return device includes a piston sliding along the oil return hole, an oil return spring abutted between the piston and the bottom of the oil return hole, a push rod connected to the end face of the piston away from the oil return spring. The oil return hole and the third annular groove are communicated through a second oil guide channel, and a first one-way valve is arranged in the second oil guide channel; a guide oil pipe is connected to the bottom of the oil return hole, and a second one-way valve is arranged in the guide oil pipe; a third oil guide channel is arranged along the length direction of the fixed shaft. The bottom end of the third oil guide channel is connected with the guide oil pipe, and a horizontal oil outlet hole is arranged at the top end of the third oil guide channel. The horizontal oil outlet hole is communicated with the through hole.

[0022] Under the action of gravity, the lubricating oil flows downward along the side wall of the fixed shaft. The lubricating oil flows into the first annular groove, and then the lubricating oil flows into the second annular groove through the first oil guide channel. Then the lubricating oil flows into the copper sleeve in the guide hole through the second annular groove. Since the first telescopic device can slide along the guide post when working, during the sliding process, the lubricating oil is more evenly distributed on the surface of the guide post. At the same time, the lubricating oil flows downward along the guide post under the action of gravity and flows into the third annular groove at its bottom end, and then flows into the second oil guide channel, and then flows into the oil return hole through the first one-way valve. When the first telescopic plate slides downward along the guide post, the first telescopic plate abuts against the push rod, so that the push rod drives the piston to move downward against the acting force of the oil return spring, so that the lubricating oil in the oil return hole is pressed into the guide oil pipe. The guide oil pipe is communicated with the third oil guide channel. There is a certain amount of lubricating oil in the third oil guide channel. After the lubricating oil in the oil return hole flows into the guide oil pipe, the lubricating oil in the oil guide channel overflows from the top of the oil guide channel, and then flows again along the side wall of the fixed shaft from the through hole through the horizontal oil outlet hole. The lubricating oil circulates as above, so that good lubrication effects are maintained among the rotating shaft, the fixed shaft, the guide post and the guide hole.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) It can realize the bending of different products, increase the types of products produced, and meet the processing requirements of different bent parts;

[0025] (2) The lubrication effect between the fixed shaft, the rotating shaft, the first telescopic plate and the guide post is good, improving the service quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a cross-sectional view of Embodiment 1 of the present invention;

[0027] Figure 2 is a top view of Embodiment 1 of the present invention;

[0028] Figure 3 is a structural diagram of Embodiment 3 of the present invention;

[0029] Figure 4 is a structural diagram of Embodiment 4 of the present invention;

[0030] Figure 5 is Figure 4 a partial enlarged view of Area A in

[0031] In the figure: 1, fixed shaft; 11, bending column; 111, first bending column; 112, second bending column; 113, first fixing groove; 114, second fixing groove; 12, third oil guiding channel; 121, horizontal oil outlet hole;

[0032] 2, rotating shaft; 21, through hole; 22, curling head; 221, bending column; 23, mounting sleeve;

[0033] 3, first telescopic device; 31, first telescopic plate; 311, first mounting hole; 312, guiding hole; 313, first annular groove; 314, second annular groove; 315, first oil guiding channel; 32, first telescopic motor; 33, first rotating shaft; 331;

[0034] 4, rotating device; 41, transmission gear; 42, driving gear; 43, rotating motor;

[0035] 5, second telescopic device; 51, second telescopic plate; 511, second mounting hole; 52, second telescopic motor; 53, second rotating shaft;

[0036] 6, sliding bushing;

[0037] 7, first mounting shell; 71, mounting plate; 72, rotating disk;

[0038] 8. Second mounting housing, 81. Guide post, 811. Third annular groove, 812. Second oil guiding channel, 813. First one-way valve, 82. Oil return hole;

[0039] 9. Oil return device, 91. Oil return piston, 92. Oil return spring, 93. Push rod, 94. Oil guiding pipe, 941. Second one-way valve. Detailed implementation mode

[0040] The technical solution of the present invention will be further specifically described below through specific embodiments in conjunction with the accompanying drawings:

[0041] Embodiment 1: Refer to Figures 1 to 4 As shown, a numerical control double-arc bending device includes a first mounting housing 7 and a second mounting housing 8. A rotating shaft 2 and a fixed shaft 1 are arranged in the first mounting housing 7. The rotating shaft 2 is arranged in the first mounting housing 21. One end of the rotating shaft 2 is located in the second mounting housing 8, and the other end of the rotating shaft 2 extends outside the first mounting housing 7. A through hole 21 is arranged along the axial direction at the center of the rotating shaft 2. The fixed shaft 1 is arranged in the through hole 21. A sliding bushing 6 is arranged on the side wall of the through hole 21. The sliding bushing 6 can reduce the friction between the fixed shaft 1 and the through hole 21. An installation sleeve 23 is fixedly arranged on the end face of the rotating shaft 2 near one end of the bending column 221 through bolts. The curling head 22 is fixedly arranged on the end face of the installation sleeve 23 through bolts. A bending column 221 is arranged on the end face of the curling head 22. A bending column 11 is arranged on the end face of the fixed shaft 1. There are two bending columns 221, and the two bending columns 221 are distributed in the circumferential direction of the curling head. The bending column 11 includes a first bending column 111 and a second bending column 112. The diameter of the first bending column 111 is larger than that of the second bending column 112. There are two groups of the first bending column 111 and the second bending column 112, which are symmetrically distributed with the diameter of the end face of the fixed shaft 1 as the axis of symmetry.

[0042] The rotating shaft 2 is connected to a rotating device 4. The rotating device 4 includes a rotating gear 41 arranged on the rotating shaft 2, a driving gear 42 meshing with the rotating gear 41, and a rotating motor 43 driving the driving gear 42 to rotate.

[0043] The fixed shaft 1 is connected to a first telescopic device 3. The first telescopic device 3 is mainly arranged in the second mounting housing 8. The first telescopic device 3 includes a first telescopic plate 31 and a first telescopic motor 32. The first telescopic plate 31 is fixedly arranged at one end of the fixed shaft 1 away from the bending column 11. The output end of the first telescopic motor 32 is connected to a first rotating shaft 33. A first mounting hole 311 is arranged on the first telescopic plate 31. The first rotating shaft 33 is arranged in the first mounting hole 311. The first mounting hole 311 and the first rotating shaft 33 are driven by a ball screw structure. By rotating the first telescopic motor 32, the first mounting hole 311 can slide along the first rotating shaft 33.

[0044] Meanwhile, in order to improve the sliding stability of the first telescopic plate 31, a guiding column 81 is arranged in the second mounting shell 8. The guiding column 81 is arranged parallel to the axial direction of the fixed shaft 1. A guiding hole 312 is arranged on the first telescopic plate 331. The guiding column 81 is inserted into the guiding hole 312. A copper sleeve is arranged in the guiding hole 312. The copper sleeve can reduce the friction between the guiding column 81 and the guiding hole 312. In this embodiment, two guiding columns 81 are arranged to improve the sliding stability of the first telescopic plate 331 along the guiding column 81.

[0045] The working principle of this embodiment is as follows: In this embodiment, a first bending column 111 and a second bending column 112 are arranged at the end of the fixed shaft 1, and the first bending column 111 and the second bending column 112 are arranged in two groups. At the same time, the diameter of the first bending column 111 is larger than that of the second bending column 112, which forms a first fixing groove 113 between the first bending column 111 and the second bending column 112. Two groups of the first bending column 111 and the second bending column 112 form a second fixing groove 114; when in use, taking a steel bar as an example, the steel bar can be stuck in the first fixing groove 113 or the second fixing groove 114, and then the motor 43 is rotated to drive the driving gear 42 to rotate. The driving gear 42 drives the rotating gear 41 to rotate, and the rotating gear 41 drives the rotating shaft 2 to rotate, so that the curling head 22 at the end of the rotating shaft 2 rotates, and then the bending column 221 acts on the steel bar to bend the steel bar. By controlling the rotation of the motor 43, the bending angle of the steel bar can be controlled; at the same time, because the diameter of the first bending column 111 is larger than that of the second bending column 112, different bending effects are produced when the steel bar abuts against the first bending column 111 and the second bending column 112 respectively during bending. For example, when the steel bar needs to be bent by 180°, the steel bar can be stuck in the second fixing groove 114, and the steel bar is first bent by the action of the bending column 221 on the first bending column 111 with a larger diameter. Then, through the telescoping of the first telescoping device 3, the steel bar is abutted and stuck in the first fixing groove 113, and the steel bar is secondarily bent by the action of the bending column 221 on the second bending column 112 with a smaller diameter, so that the steel bar can be bent to 180°, effectively preventing the steel bar from being damaged too much due to excessive bending angle at one time. Therefore, by controlling the rotating device 4 and the first telescoping device 3 through a numerical control device (which belongs to the prior art), products of different types can be bent, improving the diversification of products. And in the present invention, the transmission device is simple. Only through the cooperation of a rotating motor 43 and a first telescoping motor 32, the diversified production of products can be realized; and the curling head 22 of the present invention is connected to the mounting sleeve 23 through bolts, which makes the curling head 22 easy to replace.

[0046] Example 2: Refer to Figures 1 to 2As shown, this embodiment is similar in structure to Embodiment 1. The difference lies in that the rotating shaft 2 is connected to a second telescopic device 5. The second telescopic device 5 includes a second telescopic plate 51 and a second telescopic motor 52 connected to the rotating shaft 2. The output end of the second telescopic motor 52 is connected to a second rotating shaft 53. A second mounting hole 511 is provided on the second telescopic plate 51. The second rotating shaft 53 is inserted into the second mounting hole 511. The transmission between the second mounting hole 511 and the second rotating shaft 53 is carried out through a ball screw structure. By rotating the second telescopic motor 52, the second telescopic plate 51 can slide up and down along the second rotating shaft 53.

[0047] It should be noted that in this embodiment, the rotating shaft 2 can rotate within the second telescopic plate 51. When the second telescopic plate 51 moves upward or downward (moves along the axial direction of the rotating shaft 2) under the action of the second rotating shaft 53, the second telescopic plate 51 can drive the rotating shaft 2 to move. At the same time, when the second rotating shaft 53 moves, in order to ensure that the power transmission between the rotating shaft 2 and the rotating device 5 is not lost, the transmission gear 41 and the driving gear 42 are set as spur gears, so that when the transmission gear 41 moves along the rotating shaft 2, the power connection between the transmission gear 41 and the driving gear 42 is still guaranteed.

[0048] In this embodiment, by rotating the second telescopic motor 52, the second telescopic plate 51 can slide up and down along the second rotating shaft 53, so that the rotating shaft 2 can also move in its axial direction, thereby being able to adjust the position of the end bending column 221, enabling the bending column 221 to adapt to the bending of different products.

[0049] Embodiment 3: Refer to Figure 3 As shown, this embodiment is similar in structure to Embodiment 1 or 2. The difference lies in that the first mounting shell 7 is fixedly connected with a mounting plate 71. One end of the mounting plate 71 away from the first mounting shell 7 is fixedly connected with a rotating disk 72. The rotating disk 72 is connected with a control motor (not shown in the figure) for controlling the rotation of the rotating disk 72. The bending column 221 is arranged on the rotation central axis of the rotating disk 72.

[0050] In this embodiment, the rotating disk 72 drives the mounting plate 71 to rotate. Since the bending post 221 is disposed on the central axis of rotation when the rotating disk 72 rotates, or the intersection center of the first fixing groove 113 and the second fixing groove 114 is disposed on the central axis of rotation when the rotating disk 72 rotates; this makes it such that when the rotating disk 72 drives the first mounting shell 7 to rotate, the position of the steel bar in the first fixing groove 113 or the second fixing groove 114 is not changed, but only the position of the end face of the curling head 22 in the circumferential direction of the steel bar is adjusted. Therefore, by rotating the rotating disk 72, the bending angle of the steel bar can be adjusted, enabling the steel bar to be bent in various directions. Such a setting can make the product formed by the steel bar a three-dimensional structure, not limited to a planar structure only.

[0051] Embodiment 4: Refer to Figure 4 and Figure 5 As shown, this embodiment is similar in structure to Embodiment 1 or Embodiment 2. The difference lies in that a first annular groove 313 is provided on the end face of the first telescopic plate 31 close to the curling head 22. The first annular groove 313 is arranged along the circumferential direction of the fixed shaft 1. A second annular groove 314 is arranged in the circumferential direction of the guiding hole 312. The first annular groove 313 and the second annular groove 314 are connected through a first oil guiding channel 315. A through hole (not marked in the figure) communicating with the second sliding groove 314 is provided on the side wall of the copper sleeve; both ends of the guiding post 81 are respectively connected to the first mounting shell 7 and the second mounting shell 8. A third annular groove 811 is provided on the end face of the second mounting shell 8 close to the guiding post 81. The third annular groove 811 is arranged in the circumferential direction at the bottom end of the guiding post 81; an oil return hole 82 is provided inside the housing of the second mounting shell 8. An oil return device 9 is arranged in the oil return hole 82. The oil return device 9 includes a piston 91 sliding along the oil return hole 82, an oil return spring 92 abutted between the piston 91 and the bottom of the oil return hole 82, a push rod 93 connected to the end face of the piston 91 away from the oil return spring 92. The oil return hole 82 and the third annular groove 811 are connected through a second oil guiding channel 812. A first one-way valve 813 is arranged in the second oil guiding channel 812; a guide oil pipe 94 is connected to the bottom of the oil return hole 82. A second one-way valve 941 is arranged in the guide oil pipe 94; a third oil guiding channel 12 is arranged along the length direction inside the fixed shaft 1. The bottom end of the third oil guiding channel 12 is connected to the guide oil pipe 94. A horizontal oil outlet hole 121 is arranged at the top end of the third oil guiding channel 12. The horizontal oil outlet hole 121 communicates with the through hole 21.

[0052] In actual use, the rotating shaft 2 continuously rotates under the action of the rotating device 4, causing relative rotation between the rotating shaft 2 and the fixed shaft 1. At the same time, since it is necessary to continuously drive the fixed shaft 1 to perform telescopic movement through the first telescopic device 3, the friction between the rotating shaft 2 and the fixed shaft 1 needs to be minimized as much as possible; and the first telescopic plate 31 also needs to continuously slide along the guide post 81; and since both the fixed shaft 1 and the guide post 81 are vertically arranged, after a long time, the lubricating oil on the fixed shaft 1 and the guide post 81 will flow downward due to the action of gravity, reducing the lubricating oil on the fixed shaft 1 and the guide post 81, and further increasing the friction on the fixed shaft 1 and the guide post 81, affecting their service life. Therefore, this embodiment is provided to ensure the amount of lubricating oil on the fixed shaft 1 and the guide post 81, so as to reduce the friction on the fixed shaft 1, the rotating shaft 2 and the guide post 81.

[0053] The working principle of this embodiment is as follows: Under the action of gravity, the lubricating oil flows downward along the side wall of the fixed shaft 1. The lubricating oil flows into the first annular groove 313, and then the lubricating oil flows into the second annular groove 314 through the first oil guiding channel 315. Then the lubricating oil flows into the copper sleeve in the guiding hole 312 through the second annular groove 314. Since the first telescopic plate 31 can slide along the guiding post 312 when the first telescopic device 3 is working, during the sliding process, the lubricating oil is more evenly distributed on the surface of the guiding post 312. At the same time, the lubricating oil flows downward along the guiding post 312 under the action of gravity, and flows into the third annular groove 811 at its bottom end, and then flows into the second oil guiding channel 812, and then flows into the oil return hole 82 through the first one-way valve 813. When the first telescopic plate 31 slides downward along the guiding post 81, the first telescopic plate 31 abuts against the ejector rod 93, causing the ejector rod 93 to drive the piston 91 to move downward against the acting force of the oil return spring 92, so that the lubricating oil in the oil return hole 82 is pressed into the oil guiding pipe 94. The oil guiding pipe 94 is communicated with the third oil guiding channel 12. There is a certain amount of lubricating oil in the third oil guiding channel 12. After the lubricating oil in the oil return hole 82 flows into the oil guiding pipe 94, the lubricating oil in the oil guiding channel 12 overflows from the top of the oil guiding channel 12, and then flows again along the side wall of the fixed shaft 1 through the horizontal oil outlet hole 121 and the through hole 21. The lubricating oil circulates as described above, so as to maintain a good lubrication effect between the rotating shaft, the fixed shaft, the guiding post and the guiding hole. The setting of the first one-way valve 813 enables the oil to only flow from the second oil guiding channel 812 into the oil return hole 82, and the setting of the second one-way valve 941 enables the oil to only flow from the oil return hole 82 into the oil guiding pipe 94. This enables the piston 91 to only press the lubricating oil from the oil return hole 82 into the oil guiding pipe 94 when the first telescopic plate 31 moves downward; and when the piston 91 is pushed by the oil return spring 92, it will suck the lubricating oil from the second oil guiding channel 812 into the oil return hole 82, so that the piston 91 realizes the cycle of oil suction and oil discharge when moving in the oil return hole 82.

[0054] It should be noted that the distance between the top end of the ejector rod 93 and the first telescopic plate 31 can be adjusted according to the compression stroke of the piston 91, so that the amount of oil pumped by the piston 91 each time is adapted to the amount of the entire lubrication cycle; of course, the top end of the ejector rod 93 can also be connected to the bottom end of the first telescopic plate 31, and the specific structural form is not limited here.

[0055] The above-described embodiments are only preferred solutions of the present invention, and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A numerically controlled double-arc bending device, characterized in that it includes: A fixed shaft (1) and a rotating shaft (2). A through hole (21) is arranged along the axial direction at the center of the rotating shaft (2), and the fixed shaft (1) is inserted into the through hole (21). A curling head (22) is arranged at the top of the rotating shaft (2). A bending post (221) is arranged on the end face of the curling head (22). A bending post (11) is arranged on the end face of the fixed shaft (1). The bending post (11) includes a first bending post (111) and a second bending post (112), and the diameter of the first bending post (111) is larger than that of the second bending post (112). The fixed shaft (1) is connected with a first telescopic device (3). The first telescopic device (3) includes a first telescopic plate (31) and a first telescopic motor (32). The first telescopic plate (31) is fixedly arranged at one end of the fixed shaft (1) away from the bending post (11). The output end of the first telescopic motor (32) is connected with a first rotating shaft (33). A first mounting hole (311) is arranged on the first telescopic plate (31). The first rotating shaft (33) is inserted into the first mounting hole (311). The first mounting hole (311) and the first rotating shaft (33) are driven by a ball screw structure. By rotating the first telescopic motor (32), the first mounting hole (311) can slide along the first rotating shaft (33).

2. The numerically controlled double-arc bending device according to claim 1, characterized in that the rotating shaft The (2) is connected with a rotating device (4). The rotating device (4) includes a rotating gear (41) arranged on the rotating shaft (2), a driving gear (42) meshing with the rotating gear (41), and a rotating motor (43) driving the driving gear (42) to rotate.

3. The numerically controlled double-arc bending device according to claim 1, characterized in that the rotating shaft The (2) is connected with a second telescopic device (5). The second telescopic device (5) includes a second telescopic plate (51) rotatably connected with the rotating shaft (2) and a second telescopic motor (52). The output end of the second telescopic motor (52) is connected with a second rotating shaft (53). A second mounting hole (511) is arranged on the second telescopic plate (51). The second rotating shaft (53) is inserted into the second mounting hole (511). The second mounting hole (511) and the second rotating shaft (53) are driven by a ball screw structure. By rotating the second telescopic motor (52), the second telescopic plate (51) can slide up and down along the second rotating shaft (53), and when the second telescopic plate (51) slides up and down, it drives the rotating shaft (2) to move up and down.

4. The numerically controlled double-arc bending device according to claim 1, characterized in that the rotating shaft An installation sleeve (23) is fixedly arranged on the end face of the (2) close to the bending post (221), and the curling head (22) is fixedly arranged on the end face of the installation sleeve (23).

5. The numerically controlled double circular arc bending device according to claim 1, characterized in that, A sliding bush (6) is arranged on the side wall of the through hole.

6. The numerically controlled double circular arc bending device according to claim 1, wherein, It further includes a first mounting shell (7) and a second mounting shell (8). The rotating shaft (2) is disposed within the first mounting shell (7). One end of the rotating shaft (2) is located within the second mounting shell (8), and the other end of the rotating shaft (2) extends outside the first mounting shell (7). The first telescopic plate (31) is disposed within the second mounting shell (8). A guiding column (81) is provided within the second mounting shell (8). The guiding column (81) is arranged parallel to the rotating shaft (2). A guiding hole (312) is provided on the first telescopic plate (31), and the guiding column (81) is inserted into the guiding hole (312).

7. The numerically controlled double-arc bending device according to claim 6, characterized in that, The first mounting shell (7) is fixedly connected to a mounting plate (71). One end of the mounting plate (71) away from the first mounting shell (7) is fixedly connected to a rotating disk (72). The bending column (221) is on the central axis of rotation of the rotating disk (72).

8. The numerically controlled double-arc bending device according to claim 6, characterized in that, A first annular groove (313) is provided on the end face of the first telescopic plate (31) close to the curling head (22). The first annular groove (313) is arranged along the circumferential direction of the fixed shaft (1). A second annular groove (314) is arranged in the circumferential direction of the guiding hole (312). The first annular groove (313) and the second annular groove (314) are communicated through a first oil guiding channel (315). Both ends of the guiding column (81) are respectively connected to the first mounting shell (7) and the second mounting shell (8). A third annular groove (811) is provided on the end face of the second mounting shell (8) close to the guiding column (81). The third annular groove (811) is arranged in the circumferential direction of the guiding column (81). An oil return hole (82) is provided within the housing of the second mounting shell (8). An oil return device (9) is provided within the oil return hole (82). The oil return device (9) includes a piston (91) sliding along the oil return hole (82), an oil return spring (92) abutted between the piston (91) and the bottom of the oil return hole (82), a push rod (93) connected to the end face of the piston (91) away from the oil return spring (92). The oil return hole (82) and the third annular groove (811) are communicated through a second oil guiding channel (812). A first one-way valve (813) is provided within the second oil guiding channel (812). The bottom of the oil return hole (82) is connected to an oil guiding pipe (94). A second one-way valve (941) is provided within the oil guiding pipe (94). A third oil guiding channel (12) is arranged along the length direction within the fixed shaft (1). The bottom end of the third oil guiding channel (12) is connected to the oil guiding pipe (94), and the top end of the third oil guiding channel (12) is provided with a horizontal oil outlet hole (121). The horizontal oil outlet hole (121) is communicated with the through hole (21).

Images