A cutting device for cutting a profiled flexible material based on suspension vibration suppression

Abstract

This invention relates to a cutting device for irregularly shaped flexible materials based on suspension vibration suppression. It includes a frame, a stepping movement mechanism, a rotating blade mechanism, and a vibration damping device. The vibration damping device includes a vibration damping box fixed to the lower end of a connecting shaft, with a rectangular vibration damping cavity inside the box. The device also includes a blade holder, which comprises a rectangular block disposed within the vibration damping cavity and a U-shaped frame disposed below the rectangular block. The U-shaped frame is used to mount the blade and a blade drive mechanism for driving the blade rotation. The upper surface of the rectangular block is connected to the top wall of the vibration damping cavity via a top compression spring. An upper permanent magnet is disposed on the lower surface of the rectangular block, and a lower permanent magnet, corresponding to the upper permanent magnet, is disposed on the bottom wall of the vibration damping cavity. The upper and lower permanent magnets have opposite polarities on opposite sides to provide a repulsive force. Side compression springs are disposed between the side wall of the vibration damping cavity and the corresponding side of the rectangular block. This device offers advantages such as vibration reduction, improved cutting accuracy and efficiency, and more stable processing operations.

Description

Technical Field

[0001] This invention relates to a cutting device for irregularly shaped flexible materials based on suspension vibration suppression. Background Technology

[0002] Irregularly shaped flexible materials refer to flexible materials with uneven thickness, toughness, and hardness throughout. In efficient cutting operations, current cutting methods, due to their relatively heavy transmission mechanisms, cause the blade to experience significant acceleration during each acceleration and deceleration. This manifests as slight blade vibration in the cutting result. Even with relatively rigid equipment, the large inertia of the transmission system can cause slight vibration at the blade tip, which must be avoided at all costs for precision and efficient cutting.

[0003] On the other hand, materials with different toughness and hardness exert different forces on the cutting tool during the cutting process. In particular, when cutting uneven materials, the cutting tool will be subjected to non-periodic random impacts, which will greatly affect the cutting quality of efficient cutting operations.

[0004] Therefore, this patent proposes a cutting device for irregularly shaped flexible materials based on suspension vibration suppression, specifically for efficient cutting operations. A controllable tool suspension system suppresses tool vibration during high-speed operations, achieving efficient cutting. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting device for irregularly shaped flexible materials based on suspension vibration suppression, in order to solve the technical problems of low cutting accuracy and low cutting efficiency caused by the blade being easily subjected to non-periodic random impacts and the large inertia of the transmission system during movement causing slight vibration of the blade.

[0006] The technical solution of the present invention is as follows:

[0007] The irregular flexible material cutting device based on suspension vibration suppression includes:

[0008] frame;

[0009] A stepping movement mechanism, mounted on a frame, includes an output end that can move along three mutually perpendicular directions: X, Y, and Z.

[0010] The rotary cutter mechanism, suspended on the output end, includes a bracket and a connecting shaft rotatably mounted on the bracket. The axis of the connecting shaft is vertically set, and a rotary cutter drive mechanism that drives the connecting shaft to rotate around its axis is also mounted on the bracket.

[0011] The vibration damping device includes a vibration damping box fixed to the lower end of the connecting shaft. The vibration damping box has a rectangular vibration damping cavity. The vibration damping device also includes a tool holder, which includes a rectangular block disposed in the vibration damping cavity and a U-shaped frame disposed at the lower part of the rectangular block. The U-shaped frame is used to install the blade and a tool drive mechanism for driving the blade to rotate. The upper surface of the rectangular block is connected to the top wall of the vibration damping cavity by a top compression spring. An upper permanent magnet is disposed on the lower surface of the rectangular block, and a lower permanent magnet is disposed on the bottom wall of the vibration damping cavity corresponding to the upper permanent magnet. The upper and lower permanent magnets have opposite polarities on opposite sides to provide a repulsive force to each other. A side compression spring is disposed between the side wall of the vibration damping cavity and the corresponding side of the rectangular block.

[0012] Furthermore, the rotary cutter drive mechanism includes a drive motor, a driving synchronous pulley, a synchronous belt, and a driven synchronous pulley connected in sequence, with the driven synchronous pulley fixed on the connecting shaft.

[0013] Furthermore, the stepping mechanism includes a synchronous belt drive mechanism that can move along the X direction and a lead screw drive mechanism that can move along the Y and Z directions respectively.

[0014] Furthermore, the shock absorber box includes upper, lower, left, right, front, and rear panels, and at least one of the left, right, front, and rear panels is detachably connected to the other panels.

[0015] Furthermore, the lower plate is provided with perforations for the U-shaped frame to pass through.

[0016] Furthermore, an electromagnetic lock is installed at the lower part of the shock absorber box, and an electromagnet is installed inside the electromagnetic lock. The electromagnet is positioned close to the U-shaped frame to lock the shock absorber box relative to the tool holder when shock absorption is not required. The electromagnetic lock can lock the normally movable shock absorber box and tool holder relative to each other when the shock absorption device is not needed, thereby disabling the shock absorption device.

[0017] The beneficial effects of this invention are as follows: In use, the irregularly shaped flexible material cutting device based on suspension vibration suppression has the blade mounted on a U-shaped frame of a shock-absorbing device. The shock-absorbing device is fixed to the connecting shaft of a rotating blade mechanism, which is fixed to the output end of a stepping motion mechanism, which is mounted on a frame. After starting the stepping motion mechanism, the blade can move freely along the X, Y, and Z directions according to a set program. The rotating blade mechanism can change the cutting direction. When the stepping motion mechanism moves the blade, a large acceleration is generated during acceleration and deceleration. Alternatively, when cutting irregularly shaped flexible materials with different toughness, strength, thickness, and hardness, causing the blade to experience non-periodic random impacts, the shock-absorbing device automatically functions. Springs with determined damping coefficients eliminate vibrations in the X, Y, and Z directions, and permanent magnets and springs eliminate dynamic impacts in the Z direction. Since the cutting tool itself operates in the low-frequency range, the high-frequency vibrations it experiences are mostly noise. By setting an appropriate transfer function through a spring suspension system, vibration noise is suppressed, achieving low-pass filtering of the mechanism and ensuring tool stability during high-speed operation. Furthermore, it isolates the high-inertia motion mechanism from the low-inertia tool end, facilitating highly stable machining. In the Z-direction, a vibration-damping spring combined with a suspension magnet achieves a contactless connection, similarly filtering out high-frequency noise in the Z-direction and ensuring machining stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the irregular flexible material cutting device based on suspension vibration suppression according to the present invention.

[0019] Figure 2 A three-dimensional structural diagram of the rotary cutter mechanism and vibration damping device;

[0020] Figure 3 for Figure 2 The main view;

[0021] Figure 4 for Figure 2 The right view;

[0022] Figure 5 for Figure 3 Sectional view at point AA;

[0023] Figure 6 for Figure 4 Sectional view at point BB;

[0024] In the diagram: 1-Frame, 2-Stepping mechanism, 21-X-axis synchronous belt drive mechanism, 22-Y-axis lead screw drive mechanism, 23-Z-axis lead screw drive mechanism, 231-Output slider (i.e., output end); 3-Rotating blade mechanism, 31-Bracket, 32-Connecting shaft, 33-Drive motor, 34-Active synchronous pulley, 35-Synchronous belt, 36-Driven synchronous pulley, 4-Shock absorption device, 41-Shock absorption box, 410-Removable enclosure, 42-Blade holder, 421-Rectangular block, 422-U-shaped frame, 43-Top compression spring, 44-Upper permanent magnet, 45-Lower permanent magnet, 46-Side compression spring, 5-Blade, 7-Irregularly shaped flexible material to be cut, 8-Flexible cutting panel, 9-Electromagnetic lock, 10-Drive plate, 20-Fixed end cap, 30-Rotation drive electromagnet, 40-Moving magnet, 50-Blade shaft. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0029] One embodiment of the present invention is a flexible material cutting device for irregular shapes based on suspension vibration suppression: as follows Figure 1 As shown, in order to eliminate the problem of blade vibration during the cutting process, a flexible material cutting device based on suspension vibration suppression is proposed, which includes a frame 1, a stepping movement mechanism 2, a blade rotating mechanism 3, a shock absorption device 4, a controller, a blade 5, and a blade driving mechanism. The cutting tool is isolated from the machine body movement, and the vibration in the X, Y, and Z directions is eliminated by springs with determined damping coefficients, and the dynamic impact in the Z direction is eliminated by magnetic suspension.

[0030] Frame 1 is a welded steel frame, and the overall shape is rectangular.

[0031] The stepping movement mechanism 2 is mounted on the frame 1 and includes an X-direction synchronous belt drive mechanism 21 that can move along the X direction, and a Y-direction lead screw drive mechanism 22 and a Z-direction lead screw drive mechanism 23 that can move along the Y and Z directions, respectively. The Z-direction lead screw drive mechanism 23 includes an output end, namely an output slider 231, that can move along the three mutually perpendicular X, Y, and Z directions. That is, the Y-direction lead screw drive mechanism 22, which realizes Y-direction movement, is laid above the X-direction synchronous belt drive mechanism 21 on the rectangular frame structure frame 1, and the Z-direction lead screw drive mechanism 23, which realizes Z-direction movement, is mounted on the Y-direction lead screw drive mechanism 22.

[0032] The rotary cutter mechanism 3 is suspended on the output slider 231 and includes a bracket 31 and a connecting shaft 32 rotatably mounted on the bracket 31. The axis of the connecting shaft 32 is vertically arranged. A rotary cutter drive mechanism that drives the connecting shaft 32 to rotate around its axis is also mounted on the bracket 31. The rotary cutter drive mechanism includes a drive motor 33, a driving synchronous pulley 34, a synchronous belt, and a driven synchronous pulley 36 connected in sequence. The driven synchronous pulley 36 is fixed on the connecting shaft 32. One end of the long-arm-shaped bracket 31 is fixed on the Z-axis lead screw transmission mechanism 23, and the drive motor 33 is fixed in the fixing hole near the fixed end. The motor shaft of the drive motor 33 is fixedly connected to the driving synchronous pulley 34 and connected to the driven synchronous pulley 36 fixed to the outer end of the bracket 31 through the synchronous belt to transmit power.

[0033] The damping device 4 includes a damping box 41 fixed to the lower end of the connecting shaft 32. The damping box 41 has a rectangular damping cavity. The damping device 4 also includes a tool holder 42. The tool holder 42 includes a rectangular block 421 disposed in the damping cavity and a U-shaped frame 422 disposed at the lower part of the rectangular block 421. The U-shaped frame 422 is used to install the blade 5 and the tool drive mechanism for driving the blade 5 to rotate. The upper surface of the rectangular block 421 is connected to the top wall of the damping cavity by a top compression spring 43. An upper permanent magnet 44 is disposed on the lower surface of the rectangular block 421. A lower permanent magnet 45 is disposed on the bottom wall of the damping cavity corresponding to the upper permanent magnet 44. The polarities of the upper and lower permanent magnets 45 are opposite on opposite sides to provide a repulsive force to each other. A side compression spring 46 is disposed between the side wall of the damping cavity and the corresponding side of the rectangular block 421. The shock absorber box 41 includes upper, lower, left, right, front, and rear panels, and at least one of the left, right, front, and rear panels is detachably connected to the other panels.

[0034] The irregularly shaped flexible material 7 to be cut is placed on the rectangular flexible cutting panel 8, and the flexible cutting panel 8 is placed on the fixed body of the X-direction synchronous belt drive mechanism 21.

[0035] The driven synchronous pulley 36 is fixedly connected to the connecting shaft 32 and coaxially connected to the through hole at the far end of the bracket 31. The lower end face of the connecting shaft 32 is fixed to the upper center of the rectangular shock absorber box 41. The shock absorber box 41 has a T-shaped groove inside, which is the shock absorber cavity. The inside is connected to the T-shaped tool holder 42 through the damping springs (i.e., the top compression spring 43 and the side compression spring 46) on the upper and four sides. The two outer sides of the lower surface of the rectangular block 421 are symmetrically fixed with suspension control magnets (i.e., the upper permanent magnet 44), and at the corresponding position, the lower inner side of the shock absorber box 41 is fixedly installed with a suspension control magnet (i.e., the lower permanent magnet 45) of opposite polarity. It works with the damping spring fixed above to achieve suspension positioning in the Z direction. The damping springs symmetrically arranged in the X direction achieve suspension positioning in the X direction. Similarly, the damping springs symmetrically arranged in the Y direction achieve suspension positioning in the Y direction.

[0036] The lower extended side plates (i.e., U-shaped frame 422) of the T-shaped tool holder 42 are symmetrically distributed, with coaxial through holes in the Y direction. An outer magnetic ring of the tool shaft 50 is fixed within these holes. An inner magnetic ring for the tool is fixedly installed at the center of the outer magnetic rings on both sides of the tool shaft 50, with the inner magnetic ring having the opposite polarity to the outer magnetic ring. The inner magnetic ring is fixed to the tool shaft 50, and the cutting tool 5 is fixed at the center of the tool shaft 50. Therefore, the cutting tool 5 is fixedly connected to the inner magnetic ring via the tool shaft 50, achieving radial non-contact positioning through the outer magnetic ring, and exhibiting non-linear load in the Z direction. That is, the greater the impact on the tool, the stronger the dynamic load-bearing capacity of the cutting tool 5 on the tool holder 42, and the greater the movement resistance, ensuring impact resistance in the Z direction. Fixed end caps 20 are symmetrically fixed on both outer sides of the fixed through holes at the lower end of the tool holder 42 in the axial direction of the tool shaft 50, achieving axial positioning of the tool shaft 50.

[0037] The cylindrical tool shaft 50 has hexagonal ends, and six moving magnets 40 are fixedly arranged in a circular array on each side. These magnets correspond one-to-one with the rotating drive electromagnets 30 fixedly installed on the hexagonal surfaces of the corresponding hexagonal slots in the drive plate 10. When an alternating current is applied, the rotating drive electromagnets 30 fixed on the drive plate 10 drive the tool shaft to achieve non-contact rotational motion, with a certain redundancy for the center deviation of the motion axis, ensuring effective drive even under large impacts, large deformations, and axis deviation. The drive plate 10 is fixedly connected to the T-shaped tool holder 42.

[0038] Two rectangular plate-shaped electromagnetic locks 9 are fixedly installed on both sides of the lower surface of the shock absorber box 41 in the Y direction. Electromagnets are symmetrically installed on their inner sides, with a certain gap between them and the drive plate 10. When the suspension system is not required, the electromagnetic locks 9 can be driven to maintain their attraction and fixation to the drive plate 10, while the drive plate 10 is fixedly connected to the tool holder 42. This achieves fixed positioning between the shock absorber box 41 and the tool holder 42, rendering the suspension ineffective. The lower plate has a through hole for the U-shaped frame 422 to pass through. The tool driving mechanism includes a rotation drive electromagnet 30 and a mover magnet 40.

[0039] In the present invention, a flexible material cutting device based on suspension vibration suppression is used in which the blade 5 is mounted on the U-shaped frame 422 of the shock-absorbing device 4. The shock-absorbing device 4 is fixed on the connecting shaft 32 of the rotating blade mechanism 3, which is fixed on the output end of the stepping movement mechanism 2, which is mounted on the frame 1. After the stepping movement mechanism 2 is started, it can drive the blade 5 to move freely in the X, Y, and Z directions according to the set program. The rotating blade mechanism 3 can drive the blade 5 to change the cutting direction. When the stepping movement mechanism 2 drives the blade 5 to move, a large motion acceleration is generated during the acceleration and deceleration process. Or, when cutting flexible materials of different toughness, strength, thickness, and hardness, causing the blade to be subjected to non-periodic random impacts, the shock-absorbing device 4 can automatically play its role. It eliminates the jitter in the X, Y, and Z directions by using springs with determined damping coefficients, and eliminates the dynamic impact in the Z direction by using permanent magnets and springs. Since the cutting tool itself operates in the low-frequency range, the high-frequency vibrations it experiences are mostly noise. By setting an appropriate transfer function through a spring suspension system, vibration noise is suppressed, achieving low-pass filtering of the mechanism and ensuring tool stability during high-speed operation. Furthermore, it isolates the high-inertia motion mechanism from the low-inertia tool end, facilitating highly stable machining. In the Z-direction, a vibration-damping spring combined with a suspension magnet achieves a contactless connection, similarly filtering out high-frequency noise in the Z-direction and ensuring machining stability.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A cutting device for irregularly shaped flexible materials based on suspension vibration suppression, characterized in that, include: frame; A stepping movement mechanism, mounted on a frame, includes an output end that can move along three mutually perpendicular directions: X, Y, and Z. The rotary cutter mechanism, suspended on the output end, includes a bracket and a connecting shaft rotatably mounted on the bracket. The axis of the connecting shaft is vertically set, and a rotary cutter drive mechanism that drives the connecting shaft to rotate around its axis is also mounted on the bracket. The vibration damping device includes a vibration damping box fixed to the lower end of the connecting shaft. The vibration damping box has a rectangular vibration damping cavity. The vibration damping device also includes a tool holder, which includes a rectangular block disposed in the vibration damping cavity and a U-shaped frame disposed at the lower part of the rectangular block. The U-shaped frame is used to install the blade and a tool drive mechanism for driving the blade to rotate. The upper surface of the rectangular block is connected to the top wall of the vibration damping cavity by a top compression spring. An upper permanent magnet is disposed on the lower surface of the rectangular block, and a lower permanent magnet is disposed on the bottom wall of the vibration damping cavity corresponding to the upper permanent magnet. The upper and lower permanent magnets have the same polarity on opposite sides to provide a repulsive force to each other. A side compression spring is disposed between the side wall of the vibration damping cavity and the corresponding side of the rectangular block.

2. The irregular flexible material cutting device based on suspension vibration suppression according to claim 1, characterized in that, The rotary cutter drive mechanism includes a drive motor, a driving synchronous pulley, a synchronous belt, and a driven synchronous pulley connected in sequence. The driven synchronous pulley is fixed on the connecting shaft.

3. The irregular flexible material cutting device based on suspension vibration suppression according to claim 1, characterized in that, The stepping mechanism includes a synchronous belt drive mechanism that can move along the X direction and a lead screw drive mechanism that can move along the Y and Z directions respectively.

4. The irregular flexible material cutting device based on suspension vibration suppression according to claim 1, characterized in that, The shock absorber box includes upper, lower, left, right, front, and rear panels, and at least one of the left, right, front, and rear panels is detachably connected to the other panels.

5. The irregular flexible material cutting device based on suspension vibration suppression according to claim 4, characterized in that, The lower panel has perforations for the U-shaped frame to pass through.

6. The irregular flexible material cutting device based on suspension vibration suppression according to claim 1, characterized in that, An electromagnetic lock is installed at the bottom of the shock absorber box, and an electromagnet is installed inside the electromagnetic lock. The electromagnet is located close to the U-shaped frame to lock the shock absorber box relative to the tool holder when shock absorption is not required.

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