High-speed wire cutting machine tool

Abstract

The invention discloses a high-speed wire cutting machine tool which comprises a machine tool body, a wire cutting machine head and an anti-vibration wire frame, the wire cutting machine head is fixedly installed on the machine tool body, the anti-vibration wire frame comprises a guide plate, a movable guide plate and a walking wheel, the guide plate is provided with a fixed guide wheel, the movable guide plate is provided with an abutting wheel, the inner side of the abutting wheel is provided with a vibration sensor, and the vibration sensor is connected with the movable guide plate. The output end of the vibration sensor is electrically connected with the controller; the anti-vibration wire frame is further provided with a flexible adjusting assembly, and the flexible adjusting assembly comprises a linear guide bar, a driving rod and a pressing cap sliding seat. Through the elastic supporting and sliding adjusting functions of the anti-vibration wire frame and the feedback adjusting and magnetic flexible locking functions of the flexible adjusting assembly, automatic adjustment and vibration energy dissipation reduction of the tension of the electrode wire are achieved, vibration of the electrode wire in the wire moving process is effectively reduced, constant tension control and cutting precision of wire moving are ensured, and the wire moving quality is improved. And the operation stability and the cutting quality of the machine tool are improved.

Description

Technical Field

[0001] The invention relates to the technical field of wire cutting, in particular to a high-speed wire cutting machine tool. Background Art

[0002] High-speed wire cutting machine is a kind of precision cutting equipment widely used in the field of industrial processing. It mainly relies on the high-speed wire feeding of electrode wire to realize the electric spark cutting of materials. However, the traditional high-speed wire cutting machine has many shortcomings in structural design and tension control, which affects the cutting accuracy and stability.

[0003] In the existing traditional technical solutions, the wire rack usually adopts a tuning fork structure, which has poor rigidity and low natural frequency. It is easy to vibrate during high-speed wire feeding, causing irregular shaking and deformation of the electrode wire, which directly affects the accuracy of the cutting trajectory. At the same time, since the single-winding wire drum structure cannot effectively control the constant tension of the electrode wire, the electrode wire is prone to uneven tension when running at high speed, which further aggravates the vibration of the electrode wire and leads to a decrease in cutting quality. In addition, the traditional structure lacks effective vibration feedback monitoring and energy dissipation devices, and cannot suppress the vibration of the electrode wire in time, which makes the machine tool less stable during long-term operation, and seriously affects production efficiency and processing accuracy.

[0004] Therefore, the traditional technical solution has the following defects: The tuning fork wire rack structure has insufficient rigidity, low natural frequency, and is easy to vibrate, causing the electrode wire to vibrate during the wire feeding process, affecting the cutting accuracy and the operating stability of the machine tool; The single wire drum structure cannot provide constant electrode wire tension and is difficult to suppress the vibration of the electrode wire, resulting in uneven tension during wire feeding and poor cutting quality. The lack of vibration sensor monitoring and feedback adjustment functions makes it impossible to achieve energy dissipation and damping adjustment of electrode wire vibration, resulting in a further decrease in the cutting accuracy and stability of the machine tool.

[0005] In view of the above defects, the present invention provides a high-speed wire cutting machine with anti-vibration adjustment function. Through the structural design of the anti-vibration wire frame, the magnetic drive of the flexible adjustment component and the feedback control of the vibration sensor, the problems of wire frame vibration, unstable tension and poor cutting quality existing in the traditional technology are effectively solved, and the stability of the machine operation and the cutting accuracy are improved. Summary of the invention

[0006] The purpose of the present invention is to provide a high-speed wire cutting machine with anti-vibration adjustment function to overcome the problems of poor wire frame stiffness, unstable tension control and poor vibration suppression effect in the prior art, to achieve constant tension control and vibration energy dissipation of the electrode wire, and to improve cutting accuracy and stability.

[0007] To achieve the above object, the present invention provides a high-speed wire cutting machine tool, comprising a machine tool body, a wire cutting machine head and an anti-vibration wire frame, wherein the wire cutting machine head is fixedly mounted on the machine tool body, and is characterized in that: Anti-vibration wire rack: includes a guide plate and a moving guide plate, the surface of the guide plate is provided with a slide groove; the moving guide plate can slide in the slide groove, and is elastically connected to the guide plate through an elastic telescopic rod to provide an elastic traction function; a running wheel is rotatably installed on the surface of the guide plate, abutting against both sides of the moving guide plate to guide the moving guide plate to slide linearly; a fixed guide wheel is provided on the surface of the guide plate, and a resisting wheel is provided on the moving guide plate, and a vibration sensor is provided on the inner side of the resisting wheel, and the output end of the vibration sensor is electrically connected to the controller.

[0008] Flexible adjustment component: includes a linear guide bar, a driving rod and a pressure cap slide; the linear guide bar is fixed on one side of the guide plate, the driving rod is fixed on the surface of the moving guide plate, the output end of the driving rod passes through the moving guide plate and the slide groove and is connected to the pressure cap slide; the surface of the linear guide bar is provided with evenly distributed excitation coils and damping plates, and the surface of the pressure cap slide is provided with permanent magnets and brake pads.

[0009] Feedback adjustment function: The vibration sensor monitors the vibration of the electrode wire in real time and transmits the vibration data to the controller. The controller feedback adjusts the working state of the drive rod, changes the contact pressure between the pressure cap slide and the linear guide bar, increases the motion damping of the moving guide plate, and realizes vibration energy dissipation.

[0010] Magnetic flexible locking function: When the permanent magnet block is located between adjacent excitation coils, the magnetic field repulsion of the excitation coils on both sides realizes flexible locking between the pressure cap slide and the linear guide bar, preventing wire instability caused by abnormal tension, and at the same time has a shock-absorbing effect.

[0011] Electromagnetic drive adjustment function: The excitation coil changes the direction and size of the magnetic field by energizing, drives the permanent magnet block to slide along the linear guide bar, automatically adjusts the position of the moving guide plate, and dynamically adjusts the tension of the electrode wire.

[0012] The beneficial effects achieved by the present invention are: 1. In the present invention, through the structural design of the anti-vibration wire frame, the elastic sliding of the movable guide plate on the guide plate and the traction effect of the elastic telescopic rod, the influence of vibration on the electrode wire is effectively reduced and the electrode wire tension is adaptively maintained through the elastic traction effect, thereby improving the stability of the machine tool operation and the cutting accuracy.

[0013] 2. In the present invention, the linear guide bar and driving rod in the flexible adjustment component are used to utilize the magnetic force between the excitation coil and the permanent magnet block to realize the electric adjustment of the electrode wire tension. At the same time, during wire cutting, the position of the moving guide plate is locked by the stable magnetic pole effect of the excitation coil, ensuring that constant tension is maintained during the wire cutting process, reducing the vibration of the electrode wire and improving the cutting quality.

[0014] 3. In the present invention, the vibration sensor monitors the vibration data of the electrode wire in real time, and the controller feedback adjusts the working state of the driving rod. By adjusting the contact pressure between the pressure cap slide and the linear guide bar, the motion damping of the moving guide plate is increased to achieve vibration energy dissipation, effectively suppress vibration, and improve cutting stability and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of an anti-vibration wire rack and a wire-feeding machine head according to an embodiment of the present invention; Figure 3 A schematic diagram of the structure of an anti-vibration wire frame according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the exploded structure of an anti-vibration wire frame according to an embodiment of the present invention; Figure 5 A schematic diagram of the decomposed structure of a flexible adjustment component according to an embodiment of the present invention; Figure 6 A schematic diagram of the surface structure of a linear guide bar according to an embodiment of the present invention; Figure 7 The figure is a schematic diagram of the structure of a pressure cap slide according to an embodiment of the present invention.

[0016] Reference numerals: 100. Machine tool body; 110. Wire-cut machine head; 200, anti-vibration wire frame; 210, guide plate; 220, dynamic guide plate; 230, running wheel; 240, elastic telescopic rod; 211, fixed guide wheel; 212, slide groove; 221, stop wheel; 300, flexible adjustment component; 310, linear guide bar; 320, driving rod; 330, pressure cap slide; 311, excitation coil; 312, damping plate; 331, permanent magnet block; 332, brake pad. DETAILED DESCRIPTION

[0017] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0018] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0019] A high-speed wire cutting machine tool provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0020] Example 1: Overall structure like Figures 1 to 7 As shown, this embodiment provides a high-speed wire cutting machine tool, including: The machine tool body 100 , the wire-cutting machine head 110 , the anti-vibration wire frame 200 and the flexible adjustment component 300 .

[0021] The wire-cutting machine head 110 is fixedly mounted on the machine tool body 100 , and the anti-vibration wire frame 200 is fixedly mounted on the surface of the machine tool body 100 , located at the front end of the wire-cutting machine head 110 , and is used to guide the electrode wire to cut.

[0022] Example 2: Structure and working principle of anti-vibration wire rack like Figure 3 and Figure 4 As shown, the anti-vibration wire frame 200 includes: A sliding groove 212 is formed on the surface of the guide plate 210 . The sliding groove 212 is used to provide a sliding path for the movable guide plate 220 .

[0023] The movable guide plate 220 can slide in the slide groove 212 . One end of the movable guide plate 220 is elastically connected to the guide plate 210 via an elastic telescopic rod 240 . The elastic telescopic rod 240 provides elastic traction to achieve elastic movement of the movable guide plate 220 .

[0024] The running wheel 230 is rotatably mounted on the surface of the guide plate 210 , and the running wheel 230 abuts against two sides of the movable guide plate 220 to guide the movable guide plate 220 to slide stably in the slide groove 212 .

[0025] Fixed guide wheel 211 and stop wheel 221: The guide plate 210 is provided with a fixed guide wheel 211 on its surface for guiding the electrode wire. The movable guide plate 220 is provided with a stop wheel 221, and a vibration sensor is provided on the inner side of the stop wheel 221. The vibration sensor is used to monitor the vibration data of the electrode wire in real time and transmit the data to the controller.

[0026] Embodiment 3: Flexible adjustment component and its feedback adjustment function like Figure 5 and Figure 6 As shown, the flexibility adjustment component 300 includes: The linear guide bar 310 is fixedly installed on one side of the guide plate 210 , and a damping plate 312 and a plurality of evenly distributed excitation coils 311 are provided on the surface of the linear guide bar 310 .

[0027] The driving rod 320 is fixed to the surface of the movable guide plate 220 , and the output end of the driving rod 320 passes through the movable guide plate 220 and the slide groove 212 , and is connected to the pressure cap slide seat 330 .

[0028] The driving rod 320 is an electric telescopic rod, which adjusts the output pressure by powering on, and adjusts the contact pressure between the cap slide 330 and the linear guide bar 310. The cap slide 330 is provided with a permanent magnet block 331 and a brake pad 332. The permanent magnet block 331 and the excitation coil 311 generate magnetic drive, so that the cap slide 330 slides along the linear guide bar 310, changes the relative position of the moving guide plate 220, and automatically adjusts the tension of the electrode wire. When the permanent magnet block 331 is located between adjacent excitation coils 311, it is subjected to the repulsive force of the magnetic field, and realizes flexible locking to prevent the moving guide plate 220 from unnecessary movement.

[0029] Example 4: Working principle of feedback regulation of control system like Figure 3 and Figure 4 As shown, the vibration sensor collects the vibration data of the electrode wire in real time and transmits the data to the controller. Based on the feedback data, the controller adjusts the output pressure of the driving rod 320, changes the contact pressure between the pressure cap slide 330 and the linear guide bar 310, increases the motion damping of the moving guide plate 220, and reduces the vibration energy. The magnetic force is generated by energizing the excitation coil 311 to drive the permanent magnet block 331 to slide along the linear guide bar 310, automatically adjust the position of the moving guide plate 220, and dynamically control the tension of the electrode wire.

[0030] Example 5: Workflow like Figures 1 to 7 As shown, the workflow of the present invention is as follows: Start the machine tool: the machine tool body 100 and the wire-feeding machine head 110 are started, and the electrode wire begins to feed under the guidance of the feeding wheel 230 , the fixed guide wheel 211 and the stop wheel 221 .

[0031] Initial adjustment of the anti-vibration wire rack: The anti-vibration wire rack 200 provides initial elastic traction through the elastic telescopic rod 240 to ensure uniform tension of the electrode wire.

[0032] Real-time vibration monitoring: The vibration sensor monitors the vibration of the electrode wire and transmits the data to the controller.

[0033] Feedback adjustment: The controller adjusts the output pressure of the driving rod 320 according to the vibration data feedback, increases the contact pressure between the pressure cap slide 330 and the linear guide bar 310, and reduces the vibration of the moving guide plate 220.

[0034] Magnetic force adjustment and locking: The excitation coil 311 is energized to generate magnetic force, driving the permanent magnet block 331 to move along the linear guide bar 310, thereby adjusting the position of the moving guide plate 220 and automatically controlling the tension of the electrode wire. When the permanent magnet block 331 is located between adjacent excitation coils 311, it is flexibly locked by the repulsive force of the magnetic field to maintain the stability of the moving guide plate 220.

[0035] Dynamic cutting process: During the wire feeding process, the anti-vibration wire holder 200 and the flexible adjustment component 300 work together to dynamically adjust the tension and vibration of the electrode wire in real time to ensure cutting accuracy and stability.

[0036] The present invention realizes constant tension control and vibration suppression of the electrode wire through the elastic support of the anti-vibration wire frame, feedback adjustment of the flexible adjustment component and magnetic flexible locking, and effectively improves the cutting accuracy and operation stability of the high-speed wire cutting machine.

[0037] The working principle and use process of the present invention: The present invention effectively realizes constant tension control and vibration suppression during the electrode wire feeding process through the synergistic effect of the anti-vibration wire frame 200, the flexible adjustment component 300 and the control system, thereby improving the cutting accuracy and stability. The working principle is as follows: Elastic support of the anti-vibration wire rack: The guide plate 210 serves as a fixed support of the anti-vibration wire rack, and the movable guide plate 220 forms a sliding connection with the guide plate 210 through the slide groove 212, and realizes elastic movement under the elastic traction of the elastic telescopic rod 240. The movable guide plate 220 is provided with a stop wheel 221, which, together with the fixed guide wheel 211, provides the function of guiding the electrode wire and adjusting the tension during the wire feeding process.

[0038] Feedback adjustment function of the flexible adjustment component: the linear guide bar 310 forms a magnetic action area through a number of excitation coils 311, and a magnetic drive is generated between the permanent magnet block 331 on the pressure cap slide 330 and the excitation coil 311 to control the pressure cap slide 330 to slide along the linear guide bar 310, thereby adjusting the relative position of the moving guide plate 220.

[0039] The controller receives the vibration data collected by the vibration sensor in real time, and adjusts the output pressure of the driving rod 320 through feedback, so that the contact pressure between the pressure cap slide 330 and the linear guide bar 310 changes, thereby changing the motion damping of the moving guide plate 220 to achieve the purpose of vibration energy dissipation.

[0040] Magnetic flexible locking function: When the permanent magnet block 331 is located between adjacent excitation coils 311, the repulsive force of the magnetic field of the excitation coils 311 on both sides realizes flexible locking between the pressure cap slide 330 and the linear guide bar 310, preventing wire instability caused by abnormal tension, and at the same time having a shock-absorbing effect.

[0041] Electromagnetic drive and adaptive adjustment function: The excitation coil 311 realizes dynamic changes in the direction and magnitude of the magnetic force through alternating current, drives the permanent magnet block 331 to move along the linear guide bar 310, thereby driving the position change of the moving guide plate 220 to realize automatic adjustment of the electrode wire tension.

[0042] Workflow The workflow of the present invention is as follows: The machine tool body 100 and the wire-feeding machine head 110 are started, and the electrode wire begins to travel under the guidance of the traveling wheel 230 , the fixed guide wheel 211 and the stop wheel 221 .

[0043] The anti-vibration wire rack 200 provides elastic traction force to the movable guide plate 220 through the elastic telescopic rod 240 to ensure that the electrode wire obtains initial tension and maintain the stable position of the movable guide plate 220.

[0044] The vibration sensor monitors the vibration of the wheel 221 during the wire feeding process in real time and transmits the vibration data to the controller.

[0045] Based on the vibration data, the controller feedback controls the flexible adjustment component 300, and by adjusting the pressure output by the driving rod 320, changes the contact pressure between the pressure cap slide 330 and the linear guide bar 310, increases the motion damping of the moving guide plate 220, reduces the vibration energy, and realizes vibration suppression.

[0046] In the tension adjustment work of adjusting the electrode wire: the excitation coil 311 forms a magnetic force when powered on, and drives the permanent magnet block 331 to move along the linear guide bar 310 by dynamically adjusting the direction and magnitude of the magnetic force, thereby realizing the sliding control of the pressure cap slide 330, changing the position of the moving guide plate 220, and automatically adjusting the tension of the electrode wire.

[0047] During stable wire-feeding operation: when the permanent magnet block 331 is located between adjacent excitation coils 311 and the magnetic poles of adjacent excitation coils 311 are in the same direction, the pressure cap slide 330 is flexibly locked by the repulsive force of the magnetic field to prevent the movable guide plate 220 from making unnecessary movement, thereby further maintaining the tension stability of the electrode wire and ensuring the wire-feeding accuracy.

[0048] During the entire wire feeding process, the anti-vibration wire rack 200 and the flexible adjustment component 300 dynamically adjust the tension and vibration of the electrode wire through real-time monitoring and feedback control, ensuring a high-precision and high-stability cutting process and ultimately completing the cutting operation.

[0049] The present invention realizes automatic adjustment of electrode wire tension and reduction of vibration energy dissipation through elastic support and sliding adjustment of the anti-vibration wire frame, feedback adjustment of the flexible adjustment component and magnetic drive, ensures the stability of the wire feeding process, and significantly improves cutting accuracy and work efficiency.

[0050] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the 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 claims and their equivalents.

Claims

1. A high-speed wire cutting machine tool, characterized in that: The invention comprises a machine tool body (100), a wire-cutting machine head (110) and an anti-vibration wire frame (200), wherein the wire-cutting machine head (110) is fixedly mounted on the machine tool body (100), and is characterized in that: The anti-vibration wire frame (200) is fixedly mounted on the surface of the machine tool body (100), and the anti-vibration wire frame (200) comprises: A guide plate (210), wherein a slide groove (212) is provided on a surface of the guide plate (210); A movable guide plate (220), the movable guide plate (220) being slidable in the slide groove (212), one end of the movable guide plate (220) being elastically connected to the guide plate (210) via an elastic telescopic rod (240); A running wheel (230) is rotatably mounted on the surface of the guide plate (210) and abuts against two sides of the movable guide plate (220) to guide the movable guide plate (220) to slide linearly; The surface of the guide plate (210) is provided with a fixed guide wheel (211) for guiding the wire running, the movable guide plate (220) is provided with a stop wheel (221), the inner side of the stop wheel (221) is provided with a vibration sensor, and the output end of the vibration sensor is electrically connected to the controller; A flexible adjustment component (300) comprises a linear guide bar (310), a driving rod (320) and a cap pressing slide seat (330) fixed to the output end of the driving rod (320), wherein the linear guide bar (310) is fixed to one side of the guide plate (210), the driving rod (320) is fixed to the surface of the movable guide plate (220), and the output end of the driving rod (320) passes through the movable guide plate (220) and the slide groove (212) and is connected to the cap pressing slide seat (330); The surface of the linear guide bar (310) is provided with a damping plate (312) and a plurality of excitation coils (311) are evenly distributed, and the surface of the pressure cap slide seat (330) is provided with a permanent magnet block (331) and a brake pad (332).

2. The high-speed wire cutting machine tool according to claim 1, characterized in that: The gap between adjacent excitation coils (311) is equal to the width of the permanent magnet block (331) of the pressure cap slide seat (330) and the width between adjacent permanent magnet blocks (331).

3. The high-speed wire cutting machine tool according to claim 1, characterized in that: The vibration sensor adjusts the working state of the driving rod (320) through feedback from the controller to adjust the pressure between the pressure cap slide seat (330) and the linear guide bar (310), thereby changing the motion damping of the moving guide plate (220).

4. The high-speed wire cutting machine tool according to claim 1, characterized in that: The linear guide bars (310) and the driving rods (320) are provided in two groups and are arranged symmetrically with respect to the slide slot (212).

5. The high-speed wire cutting machine tool according to claim 1, characterized in that: The elastic telescopic rod (240) is used to realize the elastic traction movement of the movable guide plate (220) on the surface of the guide plate (210).

6. The high-speed wire cutting machine tool according to claim 1, characterized in that: The driving rod (320) in the flexible adjustment component (300) is an electric telescopic rod and is arranged perpendicular to the surface direction of the excitation coil (311). The abutment pressure between the pressure cap slide seat (330) and the surface of the linear guide bar (310) is adjusted by energizing.

7. The high-speed wire cutting machine tool according to claim 6, characterized in that: The output end of the vibration sensor is electrically connected to the controller, and the controller is used to collect vibration data of the wheel (221) in real time and adjust the working state of the driving rod (320) based on feedback.

8. The high-speed wire cutting machine tool according to claim 1, characterized in that: The pressing cap slide (330) cooperates with the linear guide bar (310), and when the permanent magnet block (331) is located between adjacent excitation coils (311), the pressing cap slide (330) and the linear guide bar (310) are flexibly locked under the repulsive force of the magnetic field of the excitation coils (311) on both sides.

9. The high-speed wire cutting machine tool according to claim 8, characterized in that: The excitation coil (311) realizes magnetic force variation by alternating the direction of current, and the plurality of excitation coils (311) are arranged in a straight line to push the movement of the permanent magnet block (331), thereby realizing a relative position change between the linear guide bar (310) and the pressure cap slide seat (330), so as to drive the movement of the movable guide plate (220).

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