High-precision bending machine equipment with numerical control system

Abstract

The invention relates to the technical field of engineering machinery, and discloses high-precision bending machine equipment with a numerical control system, the high-precision bending machine equipment comprises a bedplate, a sliding groove is longitudinally formed in the middle of the surface of the bedplate in a penetrating manner, and a longitudinal cylinder longitudinally penetrates and is fixedly inserted in the position, close to the left side, of the surface of the bedplate. The bending die structure in contact with the workpiece is composed of two adjustable structures, namely, the wide-diameter operation sleeve can be longitudinally lifted to different height positions of the surface of the narrow-diameter operation sleeve base, and therefore groove structures with different diameter and depth specifications can be used during bending operation; the narrow-diameter bending roller, the intermediate-diameter bending roller and the wide-diameter bending roller can be adjusted and selected for switching through switching of the narrow-diameter bending roller, the intermediate-diameter bending roller and the wide-diameter bending roller, so that a die structure in contact with a workpiece is conveniently and automatically adjusted and switched, time-consuming and labor-consuming operation of disassembling and reinstalling the die structure by technicians is avoided, and the working efficiency is improved. And the efficiency of machining pipe fitting or shaft piece materials with different diameter bodies is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a high-precision bending machine with a numerical control system. Background Art

[0002] Ordinary bending machines are generally machines that bend plates. There are also bending machine equipment for metal structures such as pipes and axles. CNC bending machines, on the other hand, use sampling CNC to bend the material parts. They can use the equipped molds to bend cold metal materials into workpieces of various geometric cross-sectional shapes. CNC bending machines are sheet forming machines designed for cold-rolled sheet metal processing. CNC machine tools are equipped with CNC systems, so they can maintain high precision during application. Therefore, they can be widely used in the bending of metal parts in various industries.

[0003] At present, when processing metal pipe materials or shaft materials, the existing CNC bending machines can sample the preset CNC system to accurately control the bending angle and speed; however, in the process of switching pipes or shaft materials of different diameters for bending processing, it is also necessary to replace the mold structure that contacts the workpiece. The disassembly and reinstallation of the mold structure requires time-consuming and laborious operations by technicians, which is not conducive to improving the efficiency of processing pipes or shaft materials of different diameters. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high-precision bending machine device with a numerical control system, which solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-precision bending machine with a numerical control system comprises a table, wherein a sliding groove is longitudinally penetrated through the middle of the table surface, a longitudinal cylinder is longitudinally penetrated and fixedly inserted near the left side of the table surface, a working motor is fixedly arranged at the bottom of the longitudinal cylinder, and a rotating shaft is installed at the output end of the working motor, and a narrow-diameter working cylinder seat is fixedly sleeved on the upper surface of the rotating shaft, a disc is fixedly sleeved on the lower surface of the rotating shaft, a longitudinal hydraulic cylinder group is fixedly installed on the top surface of the disc, a connecting ring is fixedly connected to the top of the output piston of the longitudinal hydraulic cylinder group, and a wide-diameter working sleeve is fixedly installed on the outer ring of the connecting ring Cylinder, and the wide-diameter working sleeve is slidably connected between the longitudinal cylinder and the narrow-diameter working cylinder seat, a transverse hydraulic cylinder group is fixedly arranged at the side of the sliding groove on the bottom surface of the table plate, and the piston end of the transverse hydraulic cylinder group is fixedly connected with a sliding support sleeve that slides in the sliding groove, an adjusting motor is fixedly arranged on the bottom surface of the inner wall of the sliding support sleeve, and a three-roller bending cylinder shell is installed at the output end of the adjusting motor, the sliding support sleeve is rotatably connected to the bottom of the three-roller bending cylinder shell, and the side of the three-roller bending cylinder shell is equidistantly arranged with rotatably mounted narrow-diameter bending rollers, medium-diameter bending rollers and wide-diameter bending rollers, and a bending motor is arranged on the top of the three-roller bending cylinder shell.

[0007] Preferably, a frame is installed at the bottom of the table, and the narrow-diameter working cylinder seat includes a fixed tube seat, supporting spokes and an working ring cylinder, and the two sides of the supporting spokes are respectively fixedly connected to the surface of the fixed tube seat and the inner wall of the working ring cylinder, and the fixed tube seat is fixed on the upper surface of the rotating shaft.

[0008] Preferably, a narrow-diameter bending ring groove is provided around the middle of the outer ring surface of the fixed tube seat, and a first alignment end ring is fixedly installed on the bottom end of the fixed tube seat, and the outer ring of the first alignment end ring structure is arc-shaped.

[0009] Preferably, a medium-diameter bending ring groove and a wide-diameter working ring groove are respectively provided on the upper and lower parts of the outer surface of the wide-diameter working sleeve, the diameter depth of the medium-diameter bending ring groove body is greater than the diameter depth of the narrow-diameter bending ring groove, and the diameter depth of the wide-diameter working ring groove body is greater than the diameter depth of the medium-diameter bending ring groove; the top and bottom ends of the wide-diameter working sleeve are fixedly provided with second alignment end rings, and the end faces of the second alignment end rings are arc-shaped.

[0010] Preferably, the longitudinal hydraulic cylinder group includes a longitudinal hydraulic cylinder and a first output piston, the first output piston is arranged in the longitudinal hydraulic cylinder, and the bottom end of the longitudinal hydraulic cylinder is fixed to the top surface of the disc; the transverse hydraulic cylinder group includes a transverse support plate, a transverse hydraulic cylinder and a second output piston, the second output piston is arranged in the transverse hydraulic cylinder, and the transverse hydraulic cylinder is fixed to the bottom surface of the table plate through the transverse support plate.

[0011] Preferably, the three-roller bending cylinder shell includes a bottom shell plate, a longitudinal shell plate and a top shell plate, the bottom end of the longitudinal shell plate is fixedly connected to the edge of the top surface of the bottom shell plate, the top end of the top shell plate is fixedly connected to the edge of the bottom surface of the top shell plate, the number of the longitudinal shell plates is three, and the three longitudinal shell plates are equidistantly distributed between the bottom shell plate and the top shell plate, the bottom surface of the bottom shell plate is fixedly connected with a longitudinal liner, the outer ring surface of the longitudinal liner is sleeved with a second pipe bearing, and the outer ring of the longitudinal liner provides a rotational connection to the sliding support sleeve through the second pipe bearing.

[0012] Preferably, the narrow diameter bending roller, the middle diameter bending roller and the wide diameter bending roller are all rotatably installed between the bottom shell plate and the top shell plate, and the narrow diameter bending roller, the middle diameter bending roller and the wide diameter bending roller are cross-distributed adjacent to the three longitudinal shell plates.

[0013] Preferably, the operating motor includes a first servo motor and a first coupling, and the output end of the first servo motor is rotatably connected to the rotating shaft through the first coupling; the adjusting motor includes a second servo motor, a second coupling and an adjusting rotating shaft, and the output end of the second servo motor is connected to the adjusting rotating shaft through the second coupling, and the top end of the adjusting rotating shaft is fixedly connected to the bottom shell plate; the bending motor includes a third servo motor and a third coupling, and the output end of the third servo motor is connected to the axis of the narrow diameter bending roller, the medium diameter bending roller and the wide diameter bending roller through the third coupling, and the third coupling is fixed to the top surface of the top shell plate.

[0014] Preferably, the side surface of the disc is fixedly connected with a longitudinal connecting tube, the outer ring surface of the longitudinal connecting tube is sleeved with a second pipe bearing, the surface of the longitudinal connecting tube is rotatably connected to the inner wall of the longitudinal tube through the second pipe bearing, and the number of the second pipe bearings is two.

[0015] Preferably, the frame includes a supporting angle plate, a transverse frame, a machine body, a bearing base plate and a footrest, the supporting angle plate is fixed to the four corners of the side of the machine body, the top and bottom of the supporting angle plate are respectively fixedly connected to the table plate and the bearing base plate, the footrest is fixed to the corner of the bottom surface of the bearing base plate, the bottom end of the longitudinal cylinder is fixedly connected to the bearing base plate, and the bottom of the operating motor is fixedly connected to the bearing base plate; a CNC unit is embedded in the middle of the front side wall of the machine body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This kind of high-precision bending machine equipment with a numerical control system is composed of two adjustable structures by setting a bending mold structure that contacts the workpiece, that is, the wide-diameter working sleeve can be longitudinally lifted to different height positions on the surface of the narrow-diameter working sleeve seat, so that trough structures with different diameters and depths can be provided for use in bending operations, and the switching of narrow-diameter bending rollers, medium-diameter bending rollers and wide-diameter bending rollers can adjust and select narrow-diameter bending rollers, medium-diameter bending rollers and wide-diameter bending rollers for switching, thereby facilitating automatic adjustment and switching of the mold structure that contacts the workpiece, avoiding the time-consuming and labor-intensive operation of technicians to disassemble and reinstall the mold structure, and greatly improving the efficiency of processing pipes or shaft materials with different diameters.

[0018] 2. This high-precision bending machine equipment with a numerical control system uses narrow-diameter bending rollers, medium-diameter bending rollers and wide-diameter bending rollers for switching use, as well as the matching narrow-diameter working cylinder seat and wide-diameter working sleeve for switching use, so that pipe structures or shaft structures with different diameters and depths can be matched to corresponding specifications, thereby ensuring the accuracy of material bending processing, allowing the tolerance of the workpiece to be controlled to be smaller, and the cost of the device used is relatively small, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional view of the structure of the present invention;

[0020] Figure 2 It is a three-dimensional view of the local structure of the present invention;

[0021] Figure 3 This is an enlarged three-dimensional view of the longitudinal tube structure of the present invention;

[0022] Figure 4 It is an enlarged three-dimensional view of the narrow-diameter working cylinder seat structure of the present invention;

[0023] Figure 5 This is an enlarged stereoscopic view of the wide-diameter working sleeve structure of the present invention;

[0024] Figure 6 It is another partial structural stereoscopic view of the present invention;

[0025] Figure 7 This is an enlarged three-dimensional view of another partial structure of the present invention;

[0026] Figure 8 This is another partial structural stereoscopic view of the present invention.

[0027] In the figure: 1, table; 2, frame; 3, slide groove; 4, longitudinal cylinder; 5, working motor; 6, rotating shaft; 7, narrow diameter working cylinder seat; 8, narrow diameter bending ring groove; 9, disc; 10, longitudinal hydraulic cylinder group; 11, connecting ring; 12, wide diameter working sleeve; 13, middle diameter bending ring groove; 14, wide diameter working ring groove; 15, transverse hydraulic cylinder group; 16, sliding support sleeve; 17, adjusting motor; 18, longitudinal liner; 19, bottom shell plate; 20, longitudinal shell plate; 21, top shell plate; 22, bending motor; 23, narrow diameter bending roller; 24, middle diameter bending roller; 25, wide diameter bending roller; 26, CNC unit; 27, longitudinal bobbin; 28, second pipe bearing;

[0028] 201, support angle plate; 202, transverse frame; 203, machine body; 204, footrest; 205, bearing bottom plate; 501, first servo motor; 502, first coupling; 701, fixed pipe seat; 702, support spokes; 703, working ring cylinder; 7001, first alignment end ring; 1001, longitudinal hydraulic cylinder; 1002, first output piston; 1201, second alignment end ring; 1501, transverse support plate; 1502, transverse hydraulic cylinder; 1503, second output piston; 1701, second servo motor; 1702, second coupling; 1703, adjusting shaft; 1801, second pipe bearing; 2201, third servo motor; 2202, third coupling; DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example: Refer to Figure 1-8A high-precision bending machine with a numerical control system includes a table 1, a sliding groove 3 is longitudinally penetrated in the middle of the table surface 1, a longitudinal cylinder 4 is longitudinally penetrated and fixedly inserted near the left side of the table surface 1, a working motor 5 is fixedly arranged at the bottom of the longitudinal cylinder 4, and a rotating shaft 6 is installed at the output end of the working motor 5, and a narrow-diameter working cylinder seat 7 is fixedly sleeved on the upper surface of the rotating shaft 6, a disc 9 is fixedly sleeved on the lower surface of the rotating shaft 6, a longitudinal hydraulic cylinder group 10 is fixedly installed on the top surface of the disc 9, a connecting ring 11 is fixedly connected to the top of the output piston of the longitudinal hydraulic cylinder group 10, and a wide-diameter working sleeve 12 is fixedly installed on the outer ring of the connecting ring 11, and a wide-diameter working sleeve 12 is fixedly installed on the outer ring of the connecting ring 11. The narrow-diameter working sleeve 12 is slidably connected between the longitudinal cylinder 4 and the narrow-diameter working cylinder seat 7, a transverse hydraulic cylinder group 15 is fixedly arranged at the side of the sliding groove 3 on the bottom surface of the table plate 1, and the piston end of the transverse hydraulic cylinder group 15 is fixedly connected to a sliding support sleeve 16 that slides in the sliding groove 3, an adjusting motor 17 is fixedly arranged on the bottom surface of the inner wall of the sliding support sleeve 16, and a three-roller bending cylinder shell is installed at the output end of the adjusting motor 17, the sliding support sleeve 16 is rotatably connected to the bottom of the three-roller bending cylinder shell, and a narrow-diameter bending roller 23, a medium-diameter bending roller 24 and a wide-diameter bending roller 25 that are rotatably installed are equidistantly arranged around the side of the three-roller bending cylinder shell, and a bending motor 22 is arranged on the top of the three-roller bending cylinder shell.

[0031] In the present invention, a frame 2 is installed at the bottom of the table 1, and the narrow-diameter working cylinder seat 7 includes a fixed tube seat 701, a supporting spoke 702 and a working ring tube 703. The two sides of the supporting spoke 702 are respectively fixedly connected to the surface of the fixed tube seat 701 and the inner wall of the working ring tube 703, and the fixed tube seat 701 is fixed to the upper surface of the rotating shaft 6.

[0032] More specifically, by providing the supporting spokes 702 as the internal support of the fixed tube base 701 , the fixed tube base 701 avoids adopting a solid design, thereby achieving a lightweight design.

[0033] In the present invention, a narrow-diameter bending ring groove 8 is formed around the middle of the outer ring surface of the fixed tube seat 701, and a first alignment end ring 7001 is fixedly installed at the bottom end of the fixed tube seat 701. The outer ring of the first alignment end ring 7001 is in an arc shape.

[0034] More specifically, by setting the outer ring of the first alignment end ring 7001 structure to be arc-shaped, the wide-diameter working sleeve 12 is not easily stuck with the bottom edge of the fixed pipe seat 701 when it is lifted upward, thereby improving the structural stability.

[0035] In the present invention, a middle diameter bending ring groove 13 and a wide diameter working ring groove 14 are respectively provided around the upper and lower sides of the outer surface of the wide diameter working sleeve 12, the diameter depth of the middle diameter bending ring groove 13 is greater than the diameter depth of the narrow diameter bending ring groove 8, and the diameter depth of the wide diameter working ring groove 14 is greater than the diameter depth of the middle diameter bending ring groove 13; the top and bottom ends of the wide diameter working sleeve 12 are fixedly provided with a second alignment end ring 1201, and the end face of the second alignment end ring 1201 is arc-shaped;

[0036] More specifically, by providing a second alignment end ring 1201 with an arc-shaped end face, the longitudinal sliding process is smoother and less likely to get stuck.

[0037] In the present invention, the longitudinal hydraulic cylinder group 10 includes a longitudinal hydraulic cylinder 1001 and a first output piston 1002, the first output piston 1002 is arranged in the longitudinal hydraulic cylinder 1001, and the bottom end of the longitudinal hydraulic cylinder 1001 is fixed to the top surface of the disc 9; the transverse hydraulic cylinder group 15 includes a transverse support plate 1501, a transverse hydraulic cylinder 1502 and a second output piston 1503, the second output piston 1503 is arranged in the transverse hydraulic cylinder 1502, and the transverse hydraulic cylinder 1502 is fixed to the bottom surface of the table 1 through the transverse support plate 1501;

[0038] More specifically, a horizontal hydraulic cylinder 1502 is arranged and fixed to the bottom surface of the table 1 through the horizontal support plate 1501, so that the oil circuit of the hydraulic cylinder 1502 is easy to connect.

[0039] In the present invention, the three-roller bending cylinder shell includes a bottom shell plate 19, a longitudinal shell plate 20 and a top shell plate 21. The bottom end of the longitudinal shell plate 20 is fixedly connected to the edge of the top surface of the bottom shell plate 19, and the top end of the top shell plate 21 is fixedly connected to the edge of the bottom surface of the top shell plate 21. The number of longitudinal shell plates 20 is three, and the three longitudinal shell plates 20 are equidistantly distributed around the bottom shell plate 19 and the top shell plate 21. The bottom surface of the bottom shell plate 19 is fixedly connected to the longitudinal liner 18, and the outer ring surface of the longitudinal liner 18 is sleeved with a second pipe bearing 1801. The outer ring of the longitudinal liner 18 is provided with a rotation connection to the sliding support sleeve 16 through the second pipe bearing 1801.

[0040] More specifically, by arranging three longitudinal shell plates 20 equidistantly and surroundingly distributed between the bottom shell plate 19 and the top shell plate 21 , the connection between the bottom shell plate 19 and the top shell plate 21 is made more stable, thereby ensuring the strength of the structure.

[0041] In the present invention, the narrow-diameter bending roller 23, the middle-diameter bending roller 24 and the wide-diameter bending roller 25 are all rotatably installed between the bottom shell plate 19 and the top shell plate 21, and the narrow-diameter bending roller 23, the middle-diameter bending roller 24 and the wide-diameter bending roller 25 are cross-distributed adjacent to the three longitudinal shell plates 20;

[0042] More specifically, by arranging the narrow diameter bending roller 23, the middle diameter bending roller 24 and the wide diameter bending roller 25 to be distributed crosswise and adjacent to the three longitudinal shell plates 20, it is avoided that the three longitudinal shell plates 20 block the narrow diameter bending roller 23, the middle diameter bending roller 24 and the wide diameter bending roller 25.

[0043] In the present invention, the operating motor 5 includes a first servo motor 501 and a first coupling 502, and the output end of the first servo motor 501 is rotatably connected to the rotating shaft 6 through the first coupling 502; the adjusting motor 17 includes a second servo motor 1701, a second coupling 1702 and an adjusting rotating shaft 1703, and the output end of the second servo motor 1701 is connected to the adjusting rotating shaft 1703 through the second coupling 1702, and the top of the adjusting rotating shaft 1703 is fixedly connected to the bottom shell plate 19; the bending motor 22 includes a third servo motor 2201 and a third coupling 2202, and the output end of the third servo motor 2201 is axially connected to the narrow-diameter bending roller 23, the middle-diameter bending roller 24 and the wide-diameter bending roller 25 through the third coupling 2202, and the third coupling 2202 is fixed to the top surface of the top shell plate 21;

[0044] More specifically, by providing the first coupling 502 , the second coupling 1702 and the third coupling 2202 , the driving of the first servo motor 501 , the second servo motor 1701 and the third servo motor 2201 is made more reliable, and the torque is guaranteed and the motor is protected.

[0045] In the present invention, the side surface of the disc 9 is fixedly connected with a longitudinal connecting tube 27, the outer ring surface of the longitudinal connecting tube 27 is sleeved with a second pipe bearing 28, the surface of the longitudinal connecting tube 27 is rotatably connected to the inner wall of the longitudinal tube 4 through the second pipe bearing 28, and the number of the second pipe bearings 28 is two;

[0046] More specifically, by arranging the longitudinal connecting tube 27 and the second pipe bearing 28 on the side surface of the disc 9 to realize rotational connection with the longitudinal tube 4, the structure of the disc 9 has better stability during rotation and is less likely to be polarized.

[0047] In the present invention, the frame 2 includes a supporting angle plate 201, a transverse frame 202, a machine body 203, a bearing bottom plate 205 and a footrest 204. The supporting angle plate 201 is fixed to the four corners of the side of the machine body 203. The top and bottom of the supporting angle plate 201 are fixedly connected to the table 1 and the bearing bottom plate 205 respectively. The footrest 204 is fixed to the corner of the bottom surface of the bearing bottom plate 205. The bottom end of the longitudinal tube 4 is fixedly connected to the bearing bottom plate 205, and the bottom of the operating motor 5 is fixedly connected to the bearing bottom plate 205. A numerical control unit 26 is embedded in the middle of the front side wall of the machine body 203.

[0048] More specifically, a supporting angle plate 201 is disposed at a corner of the cabin body 203 to provide longitudinal stress support and ensure overall structural strength.

[0049] When in use: when the structure is adjusted to adapt to the bending processing of pipes with different diameters or shafts with different shaft diameters, the longitudinal hydraulic cylinder group 10 is started, so that the longitudinal hydraulic cylinder group 10 drives its output piston to pull the link 11 to lift or lower, that is, the wide-diameter working sleeve 12 can slide longitudinally on the surface of the narrow-diameter working cylinder seat 7 and the inside of the longitudinal cylinder 4, so that the wide-diameter working sleeve 12 moves down to the longitudinal cylinder 4, so that the narrow-diameter working cylinder seat 7 is exposed, that is, the narrow-diameter bending ring groove 8 is exposed to provide workpiece placement, and when the wide-diameter working sleeve 12 moves up to cover the longitudinal cylinder 4, the medium-diameter bending ring groove 13 and the wide-diameter working ring groove 14 can be respectively on the same horizontal line of the narrow-diameter bending ring groove 8, thereby The middle diameter bending ring groove 13 or the wide diameter working ring groove 14 provides workpiece placement and bending processing; in addition, the adjusting motor 17 is started, so that the adjusting motor 17 drives the bottom shell plate 19, the longitudinal shell plate 20 and the top shell plate 21 to rotate, and the narrow diameter bending roller 23, the middle diameter bending roller 24 and the wide diameter bending roller 25 can be driven to rotate and adjust as a whole, so that the narrow diameter bending roller 23, the middle diameter bending roller 24 and the wide diameter bending roller 25 with different side groove diameter depths can be selectively used, that is, the narrow diameter bending roller 23, the middle diameter bending roller 24 or the wide diameter bending roller 25 is close to one side of the narrow diameter working cylinder seat 7, thereby realizing the adjustment of the structure, and realizing the bending processing of pipes with different diameters or shafts with different shaft diameters;

[0050] When performing bending processing, the workpiece is placed in the narrow-diameter bending ring groove 8, the wide-diameter working sleeve 12 or the medium-diameter bending ring groove 13, and then the transverse hydraulic cylinder group 15 is started, so that the transverse hydraulic cylinder group 15 drives its output end to push the sliding support sleeve 16, so that the sliding support sleeve 16 slides laterally in the sliding groove 3, that is, the bottom shell plate 19, the longitudinal shell plate 20 and the top shell plate 21 are driven to translate laterally as a whole, so that the narrow-diameter bending roller 23, the medium-diameter bending roller 24 or the wide-diameter bending roller 25 are close to the workpiece for clamping. At this time, the working motor 5 and the bending motor 22 are started synchronously, and the clamped workpiece can be bent.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision bending machine with a numerical control system, comprising a platen (1), characterized in that: A sliding groove (3) is longitudinally penetrated in the middle of the plate surface of the table (1), and a longitudinal cylinder (4) is longitudinally penetrated near the left side of the plate surface of the table (1) and fixedly inserted therein, and an operating motor (5) is fixedly arranged at the bottom of the longitudinal cylinder (4), and a rotating shaft (6) is installed at the output end of the operating motor (5), and a narrow-diameter operating cylinder seat (7) is fixedly sleeved on the upper surface of the rotating shaft (6), and a disc (9) is fixedly sleeved on the lower surface of the rotating shaft (6), and a longitudinal hydraulic cylinder group (10) is fixedly installed on the top surface of the disc (9), and a connecting ring (11) is fixedly connected to the top of the output piston of the longitudinal hydraulic cylinder group (10), and a wide-diameter operating sleeve (12) is fixedly installed on the outer ring of the connecting ring (11), and the wide-diameter operating sleeve (12) is slidably mounted on the outer ring of the connecting ring (11). The machine is movably connected between the longitudinal cylinder (4) and the narrow-diameter working cylinder seat (7); a horizontal hydraulic cylinder group (15) is fixedly arranged at the side of the sliding groove (3) on the bottom surface of the table plate (1); and a sliding support sleeve (16) sliding in the sliding groove (3) is fixedly connected to the piston end of the horizontal hydraulic cylinder group (15); an adjusting motor (17) is fixedly arranged on the bottom surface of the inner wall of the sliding support sleeve (16); and a three-roller bending cylinder shell is installed at the output end of the adjusting motor (17); the sliding support sleeve (16) is rotatably connected to the bottom of the three-roller bending cylinder shell; a narrow-diameter bending roller (23), a medium-diameter bending roller (24) and a wide-diameter bending roller (25) are rotatably arranged around the side of the three-roller bending cylinder shell at equal distances; and a bending motor (22) is arranged at the top of the three-roller bending cylinder shell.

2. A high-precision bending machine with a numerical control system according to claim 1, characterized in that: A frame (2) is installed at the bottom of the table (1); the narrow-diameter working cylinder seat (7) comprises a fixed tube seat (701), supporting spokes (702) and a working ring cylinder (703); two sides of the supporting spokes (702) are respectively fixedly connected to the surface of the fixed tube seat (701) and the inner wall of the working ring cylinder (703); and the fixed tube seat (701) is fixed to the upper surface of the rotating shaft (6).

3. A high-precision bending machine with a numerical control system according to claim 2, characterized in that: A narrow-diameter bending ring groove (8) is provided around the middle of the outer ring surface of the fixed tube seat (701), and a first alignment end ring (7001) is fixedly installed at the bottom end of the fixed tube seat (701), and the outer ring of the first alignment end ring (7001) structure is arc-shaped.

4. The high-precision bending machine equipment with a numerical control system according to claim 3 is characterized in that: A middle diameter bending ring groove (13) and a wide diameter working ring groove (14) are respectively provided on the upper and lower sides of the outer surface of the wide diameter working sleeve (12); the diameter depth of the middle diameter bending ring groove (13) is greater than the diameter depth of the narrow diameter bending ring groove (8), and the diameter depth of the wide diameter working ring groove (14) is greater than the diameter depth of the middle diameter bending ring groove (13); the top and bottom ends of the wide diameter working sleeve (12) are fixedly provided with a second alignment end ring (1201), and the end surface of the second alignment end ring (1201) is arc-shaped.

5. The high-precision bending machine equipment with a numerical control system according to claim 1 is characterized in that: The longitudinal hydraulic cylinder group (10) comprises a longitudinal hydraulic cylinder (1001) and a first output piston (1002), wherein the first output piston (1002) is arranged in the longitudinal hydraulic cylinder (1001), and the bottom end of the longitudinal hydraulic cylinder (1001) is fixed to the top surface of the disc (9); the transverse hydraulic cylinder group (15) comprises a transverse support plate (1501), a transverse hydraulic cylinder (1502) and a second output piston (1503), wherein the second output piston (1503) is arranged in the transverse hydraulic cylinder (1502), and the transverse hydraulic cylinder (1502) is fixed to the bottom surface of the table plate (1) via the transverse support plate (1501).

6. The high-precision bending machine equipment with a numerical control system according to claim 1 is characterized in that: The three-roller bending cylinder shell includes a bottom shell plate (19), a longitudinal shell plate (20) and a top shell plate (21), wherein the bottom end of the longitudinal shell plate (20) is fixedly connected to the top edge of the bottom shell plate (19), and the top end of the top shell plate (21) is fixedly connected to the bottom edge of the top shell plate (21). There are three longitudinal shell plates (20), and the three longitudinal shell plates (20) are equidistantly distributed between the bottom shell plate (19) and the top shell plate (21). The bottom surface of the bottom shell plate (19) is fixedly connected to a longitudinal liner (18), and the outer ring surface of the longitudinal liner (18) is sleeved with a second pipe bearing (1801). The outer ring of the longitudinal liner (18) is provided with a rotational connection to the sliding support sleeve (16) through the second pipe bearing (1801).

7. The high-precision bending machine equipment with a numerical control system according to claim 6 is characterized in that: The narrow-diameter bending roller (23), the middle-diameter bending roller (24) and the wide-diameter bending roller (25) are all rotatably installed between the bottom shell plate (19) and the top shell plate (21), and the narrow-diameter bending roller (23), the middle-diameter bending roller (24) and the wide-diameter bending roller (25) are cross-distributed adjacent to the three longitudinal shell plates (20).

8. The high-precision bending machine equipment with a numerical control system according to claim 6, characterized in that: The operating motor (5) comprises a first servo motor (501) and a first coupling (502), wherein the output end of the first servo motor (501) is rotatably connected to the rotating shaft (6) via the first coupling (502); the adjusting motor (17) comprises a second servo motor (1701), a second coupling (1702) and an adjusting rotating shaft (1703), wherein the output end of the second servo motor (1701) is rotatably connected to the rotating shaft (6) via the second coupling (1702) and the adjusting rotating shaft (1703). 03), the top end of the adjusting shaft (1703) is fixedly connected to the bottom shell plate (19); the bending motor (22) comprises a third servo motor (2201) and a third coupling (2202), the output end of the third servo motor (2201) is connected to the axis of the narrow-diameter bending roller (23), the middle-diameter bending roller (24) and the wide-diameter bending roller (25) through the third coupling (2202), and the third coupling (2202) is fixed to the top surface of the top shell plate (21).

9. The high-precision bending machine equipment with a numerical control system according to claim 1, characterized in that: The side surface of the disc (9) is fixedly connected to a longitudinal connecting tube (27), the outer ring surface of the longitudinal connecting tube (27) is sleeved with a second pipe bearing (28), the surface of the longitudinal connecting tube (27) is rotatably connected to the inner wall of the longitudinal cylinder (4) through the second pipe bearing (28), and the number of the second pipe bearings (28) is two.

10. The high-precision bending machine equipment with a numerical control system according to claim 1, characterized in that: The frame (2) comprises a supporting angle plate (201), a transverse frame (202), a machine body (203), a bearing bottom plate (205) and a footrest (204); the supporting angle plate (201) is fixed to the four corners of the side of the machine body (203); the top and bottom of the supporting angle plate (201) are respectively fixedly connected to the table (1) and the bearing bottom plate (205); the footrest (204) is fixed to the corner of the bottom surface of the bearing bottom plate (205); the bottom end of the longitudinal cylinder (4) is fixedly connected to the bearing bottom plate (205); and the bottom of the operating motor (5) is fixedly connected to the bearing bottom plate (205); a numerical control unit (26) is embedded in the middle of the front side wall of the machine body (203).

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