Movable core type numerical control flanging machine

Abstract

The invention relates to the technical field of numerical control edge folding machines, and provides a movable core type numerical control edge folding machine which comprises an edge folding machine body, the edge folding machine body comprises an edge folding cutter, one end or two ends of the edge folding cutter are provided with a multi-axis driving mechanism, and the multi-axis driving mechanism is used for driving the edge folding cutter to move in multiple degrees of freedom. According to the multi-degree-of-freedom edge folding device, control over the edge folding cutter on multiple degrees of freedom is achieved through the multi-axis driving mechanism, the edge folding cutter can flexibly conduct angle conversion and position movement, the application range of the device is greatly widened, the production efficiency of the device is greatly improved, and the requirement for avoiding adjustment can be rapidly responded in the machining process; and the machining precision and efficiency are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control folding machines, in particular to a dynamic numerical control folding machine. Background Art

[0002] CNC folding machines are high-precision devices widely used in sheet metal processing, performing various forming operations such as bending and flanging. As the manufacturing industry's demand for processing efficiency, precision, and automation increases, optimizing equipment performance has become an industry priority. However, existing technologies still face limitations in structural design and control systems.

[0003] Traditional folding machines use an integrated heavy-duty tool holder, which results in large inertia and limited folding speed; the adjustment of plate thickness relies on complex mechanisms and is difficult to adapt to high-speed continuous processing; during the bending process, the force is concentrated on the tool tip area, which can easily cause angle deviation due to insufficient tool holder rigidity or pressure fluctuations. At the same time, high-speed movement intensifies vibration, further reducing accuracy.

[0004] The purpose of the present invention is to solve the problem that the folding knife of the traditional CNC folding machine cannot move and cannot freely adjust its position, resulting in delayed avoidance adjustment and insufficient processing flexibility. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems of delayed avoidance adjustment and insufficient processing flexibility of traditional CNC folding machines. The present invention adopts the following technical solutions:

[0006] A dynamic CNC folding machine includes a folding machine body, the folding machine body includes a folding knife for performing folding operations, at least one end of the folding knife is installed with a multi-axis drive mechanism, and the multi-axis drive mechanism is used to drive the folding knife to move freely in multiple dimensions.

[0007] As described above, a dynamic CNC folding machine, the multi-axis drive mechanism includes a folding shaft driver, a Z-axis driver, and an X-axis driver. The folding shaft driver is connected to the folding knife for transmission, and the folding shaft driver is used to control the folding knife to perform forward and reverse folding movements; the Z-axis driver is connected to the folding knife for transmission, and the Z-axis driver is used to drive the folding knife to perform lifting and lowering displacement along the vertical Z-axis direction; the X-axis driver is connected to the folding knife for transmission, and the X-axis driver is used to drive the folding knife to perform linear displacement along the horizontal X-axis direction.

[0008] As described above, in a dynamic CNC folding machine, the multi-axis drive mechanism includes a first slide, a sliding mechanism is installed on the side of the first slide facing the folding machine body, the first slide is slidably connected to the folding machine body through the sliding mechanism, the Z-axis drive is fixedly connected to the folding machine body, and one end of the Z-axis drive is fixedly connected to the first slide.

[0009] A kind of moving-core type numerically controlled hemming machine as described above, the sliding mechanism includes a slider, the slider is slidably connected to a first guide rail, the sliding interface of the slider is dynamically engaged with the guiding profile of the first guide rail, and the first guide rail is fixedly connected to the hemming machine body.

[0010] A kind of moving-core type numerically controlled hemming machine as described above, a groove is formed in the first sliding plate, a second sliding plate is slidably connected in the groove so that the second sliding plate performs controllable displacement along the X-axis direction in the groove, the X-axis driver is fixedly connected to the first sliding plate, and one end of the X-axis driver is fixedly connected to the second sliding plate.

[0011] A kind of moving-core type numerically controlled hemming machine as described above, a through groove is formed on at least one side of the hemming machine body, the through groove is a through avoidance groove, the hemming shaft driver is fixedly connected to the second sliding plate, the hemming shaft driver includes a rotation driving part for driving the hemming knife to fold, and the through groove is used to provide a moving space for the rotation driving part.

[0012] A kind of moving-core type numerically controlled hemming machine as described above, a rotary bearing is arranged on the rotation driving part, the inner ring of the rotary bearing is coaxially assembled on the outer periphery of the rotation driving part, the outer ring of the rotary bearing is sleeved in the second sliding plate, and the outer ring of the rotary bearing forms a static fit connection with the second sliding plate. 2]

[0013] A kind of moving-core type numerically controlled hemming machine as described above, a hemming shaft is installed on the rotation driving part of the hemming shaft driver, the hemming shaft is used to carry the hemming knife, an eccentric part deviating from the rotation center axis is arranged on the hemming shaft, and the hemming knife is installed on the eccentric part.

[0014] A kind of moving-core type numerically controlled hemming machine as described above, a PLC or a numerical control system is installed on the hemming machine body, both the PLC or the numerical control system are provided with control signal output ends, the control signal output ends are respectively communicatively connected to the driving control ends of the Z-axis driver, the X-axis driver and the hemming shaft driver, and the PLC or the numerical control system is used to control the movements of the Z-axis driver, the X-axis driver and the hemming shaft driver.

[0015] A kind of moving-core type numerically controlled hemming machine as described above, the height of the groove is equal to the height of the second sliding plate, the extending length of the groove along the X-axis direction is greater than the axial projection length of the second sliding plate, and the second sliding plate can slide left and right in the groove.

[0016] Implementing the embodiments of the present invention has the following beneficial effects:

[0017] 1. In the present invention, the hemming knife is controlled in multiple degrees of freedom through a multi-axis drive mechanism. This not only enables the hemming knife to flexibly perform angle transformation and position movement, greatly expanding the application range and production efficiency of the equipment, but also enables it to quickly respond to the need for avoidance and adjustment during the processing process, effectively improving the processing accuracy and efficiency.

[0018] In summary, the present invention solves the problems of lag in avoidance and adjustment and insufficient processing flexibility of traditional numerical control hemming machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of a moving-core type numerical control hemming machine of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of a moving-core type numerical control hemming machine from another angle of the present invention.

[0022] Figure 3 It is Figure 1 An enlarged schematic diagram of part A.

[0023] Figure 4 It is Figure 2 An enlarged schematic diagram of part B.

[0024] Figure 5 It is a schematic diagram of Embodiment 2.

[0025] Figure 6 It is an installation relationship diagram of the third slide plate and the support seat in Embodiment 2.

[0026] ]>As shown in the figure:

[0027] 1. Hemming machine body; 11. Hemming knife; 12. Through groove; 13. Support seat; 2. Multi-axis drive mechanism; 21. First slide plate; 22. First guide rail; 23. Slide block; 24. Second slide plate; 25. Groove body; 26. Z-axis driver; 27. X-axis driver; 28. Hemming axis driver; 29. Rotating bearing; 210. Hemming axis; 3. Third slide plate; 4. Fourth slide plate; 5. Second guide rail; 6. Slide seat; 7. Third slide plate driver; 8. Third slide plate driver. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0029] As Figures 1 to 4 shown, the present invention provides a moving-core type numerical control hemming machine, which includes a hemming machine body 1. The hemming machine body 1 includes a hemming knife 11, and at least one end of the hemming knife 11 is provided with a multi-axis driving mechanism 2, and the multi-axis driving mechanism 2 is used to drive the hemming knife 11 to move freely in multiple dimensions. Specifically, first, according to the instructions, the multi-axis driving mechanism 2 can timely adjust the position and posture of the hemming knife in multiple dimensions to meet different processing requirements. Thus, not only can the hemming knife flexibly perform angle transformation and position movement, greatly improving the applicable range and production efficiency of the equipment, but also it can quickly respond to the requirements of avoidance adjustment during the processing, thereby improving the processing accuracy and efficiency. Secondly, by introducing the multi-axis driving mechanism 2, the hemming knife 11 is equipped with the "moving-core" function, that is, it can freely adjust its position and posture during the processing, thus significantly improving the flexibility and automation level of the equipment. Compared with the traditional numerical control hemming machine, this device not only solves the problem that the hemming knife 11 cannot move and cannot be flexibly adjusted, but also effectively improves the processing error and low efficiency caused by the lag of avoidance adjustment.

[0030] Furthermore, as a preferred embodiment of the present invention but not a limitation, the multi-axis drive mechanism 2 includes a folding shaft driver 28, a Z-axis driver 26, and an X-axis driver 27. The folding shaft driver 28 is connected to the folding knife 11 for transmission, and the folding shaft driver 28 is used to control the folding knife 11 to perform forward and reverse folding movements; the Z-axis driver 26 is connected to the folding knife 11 for transmission, and the Z-axis driver 26 is used to drive the folding knife 11 to move up and down along the vertical Z-axis direction; the X-axis driver 27 is connected to the folding knife 11 for transmission, and the X-axis driver 27 is used to drive the folding knife 11 to perform linear displacement along the horizontal X-axis direction. The folding machine body 1 is equipped with a PLC or a numerical control system, and the PLC or the numerical control system is provided with a control signal output terminal, and the control signal output terminal is respectively communicated with the drive control terminals of the Z-axis driver 26, the X-axis driver 27 and the folding shaft driver 28, and the PLC or the numerical control system is used to control the movement of the Z-axis driver 26, the X-axis driver 27 and the folding shaft driver 28. During operation, the PLC or the numerical control system first automatically adjusts the positions of the Z-axis driver 26 and the X-axis driver 27 according to the thickness of the plate and the processing requirements, so that the folding knife 11 accurately reaches the predetermined processing point. Subsequently, in the bending stage, the folding shaft driver 28 accurately controls the angle change of the folding knife 11 according to the program instructions to complete the forward or reverse bending operation. Through the above-mentioned three-axis coordinated control, the flexible movement of the folding knife in different dimensions is achieved, thereby meeting the needs of diversified processing tasks. Because this design has the functions of Z-axis lifting, X-axis displacement and folding axis angle adjustment, the folding knife 11 can freely adjust its position and posture in multiple dimensions, solving the problem of the folding knife in traditional CNC folding machines being unable to move and avoid in real time. At the same time, the application of PLC or CNC system enables the entire processing process to be automated and controlled, and the initial position can be quickly adjusted according to different plate thicknesses without manual intervention, greatly shortening the production preparation time. In addition, the folding axis driver 28 supports forward and reverse folding operations without the need to change molds or manually adjust the equipment, which greatly improves the equipment's utilization efficiency and processing adaptability.

[0031] Furthermore, as a preferred embodiment of the present invention rather than a limitation, the multi-axis drive mechanism 2 includes a first slide plate 21. A sliding mechanism is installed on one side of the first slide plate 21 facing the hemming machine body 1. The first slide plate 21 is slidably connected to the hemming machine body 1 through the sliding mechanism. The Z-axis driver 26 is fixedly connected to the hemming machine body 1, and one end of the Z-axis driver 26 is fixedly connected to the first slide plate 21. Specifically, when the Z-axis driver 26 receives a control signal from the PLC or numerical control system, a corresponding linear displacement is generated at its output end, driving the first slide plate 21 to slide up and down along the Z-axis direction. During the movement of the first slide plate 21, it maintains a stable guiding cooperation with the hemming machine body 1 by means of the sliding mechanism, ensuring the precise positioning and flexible adjustment ability of the hemming knife 11 in the vertical direction. This design improves the movement accuracy and stability of the hemming knife 11 in the vertical direction (i.e., the Z-axis direction). Since the first slide plate 21 is slidably connected to the hemming machine body 1 through the sliding mechanism and directly driven by the Z-axis driver 26, the hemming knife 11 can achieve rapid and precise height adjustment according to the change in the thickness of the sheet metal, and complete the adaptive positioning without manual intervention. This design not only improves the automation level and processing efficiency of the equipment, but also effectively avoids the hemming quality defects caused by height errors.

[0032] Optionally, in some embodiments, the sliding mechanism includes a slider 23. The slider 23 is slidably connected to a first guide rail 22. The sliding interface of the slider 23 is dynamically engaged with the guiding profile of the first guide rail 22. The first guide rail 22 is fixedly connected to the hemming machine body 1. When the Z-axis driver 26 is activated, it pushes or pulls the first slide plate 21, causing it to slide up and down along the first guide rail 22 through the slider 23, thereby achieving precise control of the height position of the hemming knife 11. This sliding fit structure ensures the stability and guiding property of the first slide plate 21 during movement, making the displacement in the Z-axis direction more precise and controllable.

[0033] Optionally, in some embodiments, the sliding mechanism is a ball screw. The high precision and low friction characteristics of the ball screw ensure higher positioning accuracy when the hemming knife 11 moves up and down, effectively reducing the angular deviation caused by mechanical clearance or vibration, and improving the consistency and stability of the bending quality.

[0034] Further, as a preferred embodiment of the present invention rather than a limitation, the first slide plate 21 is provided with a groove 25, and a second slide plate 24 is slidably connected in the groove 25 so that the second slide plate 24 performs a controllable displacement along the X-axis direction in the groove 25. The X-axis driver 27 is fixedly connected to the first slide plate 21, and one end of the X-axis driver 27 is fixedly connected to the second slide plate 24. When the X-axis driver 27 works, it pushes the second slide plate 24 to move precisely in the horizontal X-axis direction along the groove 25. This design enables the hemming knife 11 to not only move up and down through the Z-axis driver 26, but also translate left and right through the cooperation of the X-axis driver 27 and the second slide plate 24, thereby flexibly adjusting the horizontal position of the hemming knife 11. The design of multi-axis linkage significantly improves the adaptability of the equipment to different processing requirements.

[0035] Further, as a preferred embodiment of the present invention rather than a limitation, the height of the groove 25 is equal to the height of the second slide plate 24, the extension length of the groove 25 along the X-axis direction is greater than the axial projection length of the second slide plate 24, and the second slide plate 24 can slide left and right in the groove 25. This design ensures that the second slide plate 24 can slide smoothly in the groove 25 in the horizontal direction, while avoiding movement jamming or instability caused by too large or too small gaps. When the X-axis driver 27 is started, it pushes the second slide plate 24 to move precisely left and right along the groove 25, thereby driving the hemming knife 11 to adjust the horizontal position. Since the length of the groove 25 is greater than the height of the second slide plate 24, this provides sufficient sliding stroke for the second slide plate 24, enabling it to flexibly adapt to different processing requirements.

[0036] Further, as a preferred embodiment of the present invention rather than a limitation, at least one side of the hemming machine body 1 is provided with a through groove 12, the through groove 12 is a through avoidance groove, the hemming shaft driver 28 is fixedly connected to the second slide plate 2, and the hemming shaft driver 28 includes a rotation drive part for driving the hemming knife 11 to fold. The through groove 12 is used to provide an activity space for the rotation drive part. During the processing, first, through the coordinated work of the X-axis driver 27 and the Z-axis driver 26, the second slide plate 24 and the hemming knife 11 installed thereon are precisely moved to a predetermined position. Once the positioning is completed, the hemming shaft driver 28 is started, and its rotation drive part drives the hemming knife 11 to perform a folding action at the required angle through the activity space provided by the through groove 12. This structure ensures that the hemming knife 11 can move freely in three-dimensional space, thereby being able to flexibly cope with various complex processing requirements. This design significantly enhances the functionality and adaptability of the equipment. By providing the through groove 12 and combining the rotation drive part of the hemming shaft driver 28, not only the limitations of traditional numerical control hemming machines in angle adjustment are solved, but also the hemming knife 11 can move flexibly in three-dimensional space.

[0037] Further, as a preferred embodiment of the present invention rather than a limitation, the rotary drive part is provided with a rotary bearing 29. The inner ring of the rotary bearing 29 is coaxially assembled on the outer periphery of the rotary drive part, and the outer ring of the rotary bearing 29 is sleeved in the second slide plate 24. The outer ring of the rotary bearing 29 forms a static fit connection with the second slide plate 24. Specifically, the inner ring of the rotary bearing 29 is tightly sleeved outside the rotor of the hemming shaft driver 28 and rotates synchronously with the rotor; its outer ring is fixedly installed inside the second slide plate 24 and remains stationary. When the hemming shaft driver 28 is started, its rotor drives the inner ring of the rotary bearing 29 to rotate together, thereby smoothly transmitting power to the hemming knife 11 to achieve low-friction and high-precision rotary motion.

[0038] Further, as a preferred embodiment of the present invention rather than a limitation, the rotary drive part of the hemming shaft driver 28 is installed with a hemming shaft 210. The hemming shaft 210 is used to carry the hemming knife 11. The hemming shaft 210 is provided with an eccentric part deviating from its rotation center axis, and the hemming knife 11 is installed on the eccentric part. When the hemming shaft driver 28 is started, its rotor drives the hemming shaft 210 to rotate through the rotary bearing 29. Due to the existence of the eccentric part, the hemming knife 11 does not rotate around its own geometric center during the movement, but rotates around an offset trajectory. This structure enables the hemming knife 11 to achieve a more complex movement path and more precise angle control when performing the bending action, and enables the hemming knife 11 to have a larger angle adjustment range and higher flexibility during the rotation process, so as to meet the processing requirements of plates with different shapes and thicknesses.

[0039] Further, as a preferred embodiment of the present invention rather than a limitation, the Z-axis driver 26, the X-axis driver 27, and the hemming shaft driver 28 are all hydraulic cylinders. The hydraulic cylinder provides strong thrust and high-precision position control, ensuring the precise positioning and smooth operation of the hemming knife 11 when performing height adjustment, horizontal movement, and angle folding.

[0040] Optionally, in some embodiments, the Z-axis driver 26, the X-axis driver 27, and the hemming shaft driver 28 are all servo motors. Using servo motors can achieve precise adjustment of the hemming knife 11 in terms of height (Z-axis), horizontal position (X-axis), and angle folding (hemming shaft).

[0041] Such as Figure 5 、 Figure 6As shown, optionally, in some embodiments, a support base 13 is provided on the side wall of the hemming machine body 1. A third sliding plate 3 is slidably connected to the support base 13. A fourth sliding plate 4 is slidably connected to one side of the third sliding plate 3. A hemming shaft driver 28 is installed on the fourth sliding plate 4. The hemming shaft driver 28 drives the hemming knife 11 to perform a hemming operation. The support base 13 is installed with a third sliding plate driver 7 for driving the third sliding plate 3 to move. The third sliding plate 3 is installed with a third sliding plate driver 8 for driving the fourth sliding plate 4 to move. Both the third sliding plate driver 7 and the third sliding plate driver 8 are hydraulic cylinders. The support base 13 is installed with a second guide rail 5. The third sliding plate 3 is installed with a first sliding seat 6. The first sliding seat 6 is slidably connected to the second guide rail 5. A third guide rail is installed on one side of the third sliding plate 3. The fourth sliding plate 4 is installed with a second sliding seat matching the third guide rail. The third guide rail is slidably connected to the second sliding seat.

[0042] Embodiment 1:

[0043] The present invention proposes a dynamic CNC folding machine, comprising a folding machine body 1, the folding machine body 1 including a folding blade 11, and a multi-axis drive mechanism 2 mounted on at least one end of the folding blade 11. The multi-axis drive mechanism 2 is used to drive the folding blade 11 to move freely in multiple dimensions. Specifically, first, the multi-axis drive mechanism 2 can adjust the position and posture of the folding blade in a timely manner in multiple dimensions according to instructions to adapt to different processing requirements. This not only allows the folding blade to flexibly change angles and move positions, greatly improving the applicability and production efficiency of the equipment, but also enables it to quickly respond to avoidance adjustment requirements during the processing, thereby improving processing accuracy and efficiency. Secondly, by introducing the multi-axis drive mechanism 2, the folding blade 11 is given a "dynamic" function, that is, it can freely adjust its position and posture during the processing, thereby significantly improving the flexibility and automation level of the equipment. Compared with traditional CNC folding machines, this device not only solves the problem of the folding blade 11 being unable to move and flexibly adjust, but also effectively improves the processing errors and low efficiency caused by the lag in avoidance adjustment. The multi-axis drive mechanism 2 includes a folding shaft driver 28, a Z-axis driver 26, and an X-axis driver 27. The folding shaft driver 28 is connected to the folding knife 11 for controlling the folding knife 11 to perform forward and reverse folding movements. The Z-axis driver 26 is connected to the folding knife 11 for driving the folding knife 11 to move up and down along the vertical Z-axis direction. The X-axis driver 27 is connected to the folding knife 11 for driving the folding knife 11 to perform linear displacement along the horizontal X-axis direction. The folding machine body 1 is equipped with a PLC or CNC system. The PLC or CNC system is provided with a control signal output terminal, which is respectively connected to the drive control terminals of the Z-axis driver 26, the X-axis driver 27, and the folding shaft driver 28. The PLC or CNC system is used to control the movement of the Z-axis driver 26, the X-axis driver 27, and the folding shaft driver 28. During operation, the PLC or CNC system first automatically adjusts the positions of the Z-axis driver 26 and the X-axis driver 27 according to the thickness of the plate and the processing requirements, so that the folding knife 11 accurately reaches the predetermined processing point. Subsequently, in the bending stage, the folding shaft driver 28 accurately controls the angle change of the folding knife 11 according to the program instructions to complete the forward or reverse bending operation. Through the above-mentioned three-axis coordinated control, the flexible movement of the folding knife in different dimensions is achieved, thereby meeting the needs of diversified processing tasks. Since this design has the functions of Z-axis lifting, X-axis displacement and folding shaft angle adjustment, the folding knife 11 can freely adjust its position and posture in multiple dimensions, solving the problem that the folding knife in the traditional CNC folding machine cannot move and cannot avoid in real time. At the same time, the application of PLC or CNC system enables the entire processing process to be automatically controlled, and the initial position can be quickly adjusted according to different plate thicknesses without manual intervention, which greatly shortens the production preparation time.In addition, the hemming shaft driver 28 supports both forward and reverse hemming operations without the need to replace the die or manually adjust the equipment, significantly improving the equipment's usage efficiency and processing adaptability. The Z-axis driver 26, X-axis driver 27, and hemming shaft driver 28 are all hydraulic cylinders. The hydraulic cylinders provide strong thrust and high-precision position control, ensuring the precise positioning and smooth operation of the hemming knife 11 during height adjustment, horizontal movement, and angular folding.

[0044] The multi-axis drive mechanism 2 includes a first slide plate 21. A sliding mechanism is installed on one side of the first slide plate 21 facing the hemming machine body 1. The first slide plate 21 is slidably connected to the hemming machine body 1 through the sliding mechanism. The Z-axis driver 26 is fixedly connected to the hemming machine body 1, and one end of the Z-axis driver 26 is fixedly connected to the first slide plate 21. Specifically, when the Z-axis driver 26 receives a control signal from the PLC or numerical control system, a corresponding linear displacement is generated at its output end, driving the first slide plate 21 to slide up and down along the Z-axis direction. During the movement of the first slide plate 21, it maintains a stable guiding cooperation with the hemming machine body 1 by relying on the sliding mechanism, ensuring the precise positioning and flexible adjustment ability of the hemming knife 11 in the vertical direction. This design improves the movement accuracy and stability of the hemming knife 11 in the vertical direction (i.e., the Z-axis direction). Since the first slide plate 21 is slidably connected to the hemming machine body 1 through the sliding mechanism and is directly driven by the Z-axis driver 26, the hemming knife 11 can achieve rapid and precise height adjustment according to the change in the thickness of the sheet metal, and complete adaptive positioning without manual intervention. This design not only improves the automation level and processing efficiency of the equipment but also effectively avoids hemming quality defects caused by height errors. The sliding mechanism includes a slider 23. The slider 23 is slidably connected to a first guide rail 22. The sliding interface of the slider 23 is dynamically engaged with the guiding profile of the first guide rail 22. The first guide rail 22 is fixedly connected to the hemming machine body 1. When the Z-axis driver 26 is activated, it pushes or pulls the first slide plate 21, causing it to slide up and down along the first guide rail 22 through the slider 23, thereby achieving precise control of the height position of the hemming knife 11. This sliding fit structure ensures the stability and guiding property of the first slide plate 21 during movement, making the displacement in the Z-axis direction more precise and controllable.

[0045] The first slide plate 21 is provided with a groove 25. A second slide plate 24 is slidably connected in the groove 25, enabling the second slide plate 24 to perform a controllable displacement along the X-axis direction within the groove 25. The X-axis driver 27 is fixedly connected to the first slide plate 21, and one end of the X-axis driver 27 is fixedly connected to the second slide plate 24. When the X-axis driver 27 operates, it pushes the second slide plate 24 to perform an accurate movement along the X-axis in the horizontal direction within the groove 25. This design enables the hemming knife 11 not only to move up and down through the Z-axis driver 26 but also to translate left and right through the cooperation of the X-axis driver 27 and the second slide plate 24, thereby flexibly adjusting the horizontal position of the hemming knife 11. The design of multi-axis linkage significantly improves the adaptability of the equipment to different processing requirements. The height of the groove 25 is equal to the height of the second slide plate 24, and the extension length of the groove 25 along the X-axis direction is greater than the axial projection length of the second slide plate 24, allowing the second slide plate 24 to slide left and right within the groove 25. This design ensures that the second slide plate 24 can slide smoothly in the horizontal direction within the groove 25, while avoiding movement jamming or instability caused by excessive or insufficient gaps. When the X-axis driver 27 is activated, it pushes the second slide plate 24 to perform an accurate left-right movement along the groove 25, thereby driving the hemming knife 11 to adjust its horizontal position. Since the length of the groove 25 is greater than the height of the second slide plate 24, this provides sufficient sliding stroke for the second slide plate 24, enabling it to flexibly adapt to different processing requirements.

[0046] At least one side of the hemming machine body 1 is provided with a through groove 12. The through groove 12 is a through-type avoidance groove. The hemming shaft driver 28 is fixedly connected to the second slide plate 2. The hemming shaft driver 28 includes a rotational drive portion for driving the hemming knife 11 to fold. The through groove 12 is used to provide a movement space for the rotational drive portion. During the processing, first, through the coordinated operation of the X-axis driver 27 and the Z-axis driver 26, the second slide plate 24 and the hemming knife 11 mounted thereon are accurately moved to a predetermined position. Once the positioning is completed, the hemming shaft driver 28 is activated, and its rotational drive portion drives the hemming knife 11 to perform a folding action at the required angle through the movement space provided by the through groove 12. This structure ensures that the hemming knife 11 can move freely in three-dimensional space, thus being able to flexibly respond to various complex processing requirements. This design significantly enhances the functionality and adaptability of the equipment. By providing the through groove 12 and combining it with the rotational drive portion of the hemming shaft driver 28, not only the limitations of traditional CNC hemming machines in angle adjustment are solved, but also the hemming knife 11 can move flexibly in three-dimensional space.

[0047] The rotation drive part is provided with a rotary bearing 29. The inner ring of the rotary bearing 29 is coaxially assembled on the outer periphery of the rotation drive part, and the outer ring of the rotary bearing 29 is sleeved in the second slide plate 24. A static fit connection is formed between the outer ring of the rotary bearing 29 and the second slide plate 24. Specifically, the inner ring of the rotary bearing 29 is tightly sleeved outside the rotor of the hemming shaft driver 28 and rotates synchronously with the rotor; its outer ring is fixedly installed inside the second slide plate 24 and remains stationary. When the hemming shaft driver 28 is started, its rotor drives the inner ring of the rotary bearing 29 to rotate together, thereby smoothly transmitting power to the hemming knife 11 and realizing low-friction and high-precision rotational motion. The rotation drive part of the hemming shaft driver 28 is installed with a hemming shaft 210. The hemming shaft 210 is used to carry the hemming knife 11. The hemming shaft 210 is provided with an eccentric part deviating from its rotation center axis, and the hemming knife 11 is installed on the eccentric part. When the hemming shaft driver 28 is started, its rotor drives the hemming shaft 210 to rotate through the rotary bearing 29. Due to the existence of the eccentric part, the hemming knife 11 does not rotate around its own geometric center during the movement, but rotates around an offset track. This structure enables the hemming knife 11 to achieve a more complex movement path and more precise angle control when performing the bending action, gives the hemming knife 11 a larger angle adjustment range and higher flexibility during the rotation process, so as to meet the processing requirements of plates with different shapes and thicknesses.

[0048] Embodiment 2:

[0049] A support base 13 is provided on the side wall of the hemming machine body 1. A third slide plate 3 is slidably connected to the support base 13. A fourth slide plate 4 is slidably connected to one side of the third slide plate 3. A hemming shaft driver 28 is installed on the fourth slide plate 4. The hemming shaft driver 28 drives the hemming knife 11 to perform a hemming operation. The support base 13 is installed with a third slide plate driver 7 for driving the third slide plate 3 to move. The third slide plate 3 is installed with a fourth slide plate driver 8 for driving the fourth slide plate 4 to move. Both the third slide plate driver 7 and the fourth slide plate driver 8 are hydraulic cylinders. The support base 13 is installed with a second guide rail 5. The third slide plate 3 is installed with a first sliding seat 6. The first sliding seat 6 is slidably connected to the second guide rail 5. A third guide rail is installed on one side of the third slide plate 3. The fourth slide plate 4 is installed with a second sliding seat matching the third guide rail. The third guide rail is slidably connected to the second sliding seat. During operation, the third slide plate driver 7 (hydraulic cylinder) first drives the third slide plate 3 to slide along the second guide rail 5 on the support base 13, and precise positioning in the horizontal direction is achieved through the first sliding seat 6. Subsequently, the fourth slide plate driver 8 (hydraulic cylinder) drives the fourth slide plate 4 to slide along the third guide rail on the side of the third slide plate 3, and displacement adjustment in another horizontal direction is achieved through the second sliding seat. At the same time, the hemming shaft driver 28 installed on the fourth slide plate 4 drives the hemming knife 11 to perform an angular flip, completing the hemming operation on the sheet material. During the whole process, each sliding component moves smoothly and is precisely positioned under the guidance of the guide rail and the sliding seat. The hydraulic cylinder provides a powerful and stable driving force, ensuring that the equipment can quickly and accurately adjust the position of the hemming knife and complete high-quality bending operations.

[0050] The above solution improves the spatial flexibility and hemming accuracy of the equipment, realizes the precise positioning of the hemming knife 11 in multiple degrees of freedom, and enhances the adaptability to complex workpieces. It effectively solves the problems of lagging avoidance, rigid structure, and poor processing flexibility of traditional numerical control hemming machines.

[0051] Specifically, the working principle of the present invention is as follows:

[0052] The dynamic single-knife positive and negative numerical control hemming machine realizes the free movement control of the hemming knife 11 in multiple dimensions by installing a multi-axis drive mechanism 2 at at least one end of the hemming knife 11. The multi-axis drive mechanism 2 includes three main components: a Z-axis driver 26, an X-axis driver 27, and a hemming axis driver 28, which are respectively responsible for driving the hemming knife 11 to move in the vertical direction (Z-axis), horizontal direction (X-axis), and perform forward and reverse folding operations. A PLC or numerical control system is provided on the hemming machine body 1, which is provided with a control signal output end and is respectively communicatively connected to the drive control ends of the above-mentioned drivers, and can automatically adjust the actions of each axis according to the processing parameters. During the specific working process, first, the numerical control system controls the Z-axis driver 26 and the X-axis driver 27 to accurately position the hemming knife 11 to the target position according to the thickness of the sheet and the processing path requirements; then, the hemming axis driver 28 is started to control the hemming knife 11 to perform precise angle transformation to achieve high-quality bending operations. The design of multi-axis linkage enables the hemming knife 11 to have flexible movement capabilities in three-dimensional space, significantly improving the processing adaptability and automation level of the equipment.

[0053] When the Z-axis driver 26 receives a control instruction, its hydraulic cylinder pushes the first slide plate 21 to slide up and down along the first guide rail 22, thereby driving the hemming knife 11 to complete height adjustment. This structure not only improves the guiding stability in the Z-axis direction but also enhances the adaptive ability of the equipment to different sheet thicknesses. When the X-axis driver 27 operates, its hydraulic cylinder pushes the second slide plate 24 to slide along the groove body 25, enabling the hemming knife 11 to achieve precise horizontal positioning. The length of the groove body 25 is greater than the width of the second slide plate 24, ensuring the sufficiency of the sliding stroke and avoiding jamming or shaking caused by clearance problems. This Z-axis and X-axis linkage structure effectively improves the spatial positioning accuracy and avoidance response speed of the hemming knife 11, providing guarantee for high-precision processing under complex working conditions.

[0054] The hemming shaft driver 28, as the core component for angle adjustment, is installed on the second slide plate 24. Its rotary drive part rotates through the moving space provided by the through slot 12 to avoid interference with other structures. A rotary bearing 29 is arranged inside the rotary drive part. The inner ring of the rotary bearing 29 is tightly sleeved on the outer periphery of the rotor of the hemming shaft driver 28 and rotates synchronously with the rotor, while the outer ring of the rotary bearing 29 forms a static fit connection with the second slide plate 24 and remains stationary. This assembly method ensures low friction and smoothness during rotation, improving the overall transmission efficiency and service life. The hemming shaft driver 28 further drives the hemming shaft 210 to rotate. The hemming shaft 210 carries the hemming knife 11, and an eccentric part deviating from the rotation center axis is provided on it. The hemming knife 11 is installed on this eccentric part. When the hemming shaft driver 28 is started, its rotor drives the hemming shaft 210 to rotate through the rotary bearing 29. Due to the existence of the eccentric part, the hemming knife 11 does not rotate around its own geometric center during movement, but rotates along a non-centered trajectory. This design enables the hemming knife 11 to achieve a larger range of angle changes and more complex bending paths under the same rotary drive, meeting the processing requirements of plates with various shapes and thicknesses.

[0055] In summary, the present invention solves the problems of lagging avoidance adjustment and insufficient processing flexibility in traditional numerical control hemming machines.

[0056] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information. In addition, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0057] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations are also regarded as the protection scope of the present invention.

Claims

1. A moving-heart type numerical control hemming machine, comprising a hemming machine body (1), wherein the hemming machine body (1) includes a hemming knife (11) for performing hemming operations, and is characterized in that, At least one end of the hemming knife (11) is provided with a multi-axis drive mechanism (2), and the multi-axis drive mechanism (2) is used to drive the hemming knife (11) to move with degrees of freedom in multiple dimensions.

2. A heart-moving numerical control hemming machine according to claim 1, wherein the multi-axis drive mechanism (2) comprises a hemming shaft driver (28), a Z-axis driver (26), and an X-axis driver (27). The hemming shaft driver (28) is in transmission connection with the hemming knife (11), and the hemming shaft driver (28) is used to control the hemming knife (11) to perform forward and reverse folding movements; the Z-axis driver (26) is in transmission connection with the hemming knife (11), and the Z-axis driver (26) is used to drive the hemming knife (11) to perform lifting displacement along the vertical Z-axis direction; the X-axis driver (27) is in transmission connection with the hemming knife (11), and the X-axis driver (27) is used to drive the hemming knife (11) to perform linear displacement along the horizontal X-axis direction.

3. The moving-core type numerical control flanging machine according to claim 2, wherein, The multi-axis drive mechanism (2) comprises a first sliding plate (21). A sliding mechanism is installed on one side of the first sliding plate (21) facing the hemming machine body (1). The first sliding plate (21) is slidably connected to the hemming machine body (1) through the sliding mechanism. The Z-axis driver (26) is fixedly connected to the hemming machine body (1), and one end of the Z-axis driver (26) is fixedly connected to the first sliding plate (21).

4. The heart-moving type numerical control hemming machine according to claim 3, characterized in that, The sliding mechanism comprises a slider (23). The slider (23) is slidably connected to a first guide rail (22). The sliding interface of the slider (23) is dynamically engaged with the guiding profile of the first guide rail (22). The first guide rail (22) is fixedly connected to the hemming machine body (1).

5. The kind of moving-core numerical control hemming machine according to claim 3, characterized in that, A groove body (25) is formed in the first sliding plate (21). A second sliding plate (24) is slidably connected in the groove body (25) to enable the second sliding plate (24) to perform controllable displacement along the X-axis direction in the groove body (25). The X-axis driver (27) is fixedly connected to the first sliding plate (21), and one end of the X-axis driver (27) is fixedly connected to the second sliding plate (24).

6. The heart-moving type numerical control flanging machine according to claim 5, characterized in that, At least one side of the hemming machine body (1) is provided with a through groove (12). The through groove (12) is a through-type avoidance groove. The hemming shaft driver (28) is fixedly connected to the second sliding plate (2). The hemming shaft driver (28) comprises a rotary drive part for driving the hemming knife (11) to fold. The through groove (12) is used to provide a moving space for the rotary drive part.

7. The swinging type numerical control flanging machine according to claim 6, wherein, The rotary drive part is provided with a rotary bearing (29). The inner ring of the rotary bearing (29) is coaxially assembled on the outer periphery of the rotary drive part. The outer ring of the rotary bearing (29) is sleeved in the second sliding plate (24), and the outer ring of the rotary bearing (29) forms a static fit connection with the second sliding plate (24).

8. The kind of moving-core numerical control flanging machine according to claim 2, characterized in that, The rotating drive part of the hemming shaft driver (28) is provided with a hemming shaft (210) for carrying a hemming knife (11). The hemming shaft (210) is provided with an eccentric part deviating from its rotation center axis, and the hemming knife (11) is mounted on the eccentric part.

9. The heart-moving type numerical control hemming machine according to claim 2, characterized in that, The hemming machine body (1) is provided with a PLC or a numerical control system, both of which are provided with control signal output terminals. The control signal output terminals are respectively communicatively connected to the drive control terminals of the Z-axis driver (26), the X-axis driver (27) and the hemming shaft driver (28). The PLC or the numerical control system is used to control the movements of the Z-axis driver (26), the X-axis driver (27) and the hemming shaft driver (28).

10. A kind of moving heart type numerical control hemming machine according to claim 5, characterized in that, The height of the groove body (25) is equal to the height of the second slide plate (24). The extension length of the groove body (25) in the X-axis direction is greater than the axial projection length of the second slide plate (24). The second slide plate (24) can slide left and right in the groove body (25).

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