A wire cutting machine tool with an intelligent tension adjustment system

Abstract

This utility model relates to the field of wire cutting technology, specifically a wire cutting machine tool with an intelligent tension adjustment system. The machine tool includes a machine tool with a clamping module. Inside the machine tool is a wire feeding assembly with a cutting wire on it. A first guide assembly is provided on the cutting wire, and a braking assembly is located on one side of the first guide assembly. Guide nozzles are symmetrically arranged on the cutting wire, and a guide wheel is provided on the cutting wire. A second guide assembly is located on one side of the guide wheel, and a wire winding assembly is located on one side of the second guide assembly. An adjustment assembly is located on one side of the wire winding assembly, and a take-up assembly is located on one side of the adjustment assembly. By utilizing the structure of the guide assembly, braking assembly, guide nozzles, guide wheel, wire winding assembly, adjustment assembly, and take-up assembly, the problem of traditional wire cutting machine tools relying on mechanical springs or counterweights for wire tension control, resulting in sluggish response and insufficient accuracy, is solved.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting technology, specifically to a wire cutting machine tool equipped with an intelligent tension adjustment system. Background Technology

[0002] Wire EDM, or electrical discharge machining for short, is a type of machining that evolved from electrical discharge drilling and forming processes. It has not only expanded the applications of electrical discharge machining but has also replaced electrical discharge drilling and forming processes in some aspects. Today, wire EDM machines account for the majority of electrical discharge machining machines.

[0003] Traditional wire EDM machines rely heavily on mechanical springs or counterweights for wire tension control, resulting in slow response and insufficient precision.

[0004] Therefore, it is particularly important to design a wire EDM machine tool with an intelligent tension adjustment system to overcome the above-mentioned technical defects and improve its overall practicality. Utility Model Content

[0005] The purpose of this invention is to provide a wire cutting machine tool with an intelligent tension adjustment system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wire cutting machine tool with an intelligent tension adjustment system includes a machine tool, a clamping module on the machine tool, a wire feeding assembly inside the machine tool, a cutting wire on the wire feeding assembly, a first guide assembly on the cutting wire, a braking assembly on one side of the first guide assembly, guide nozzles symmetrically arranged on the cutting wire, a guide wheel on the cutting wire, a second guide assembly on one side of the guide wheel, a wire winding assembly on one side of the second guide assembly, an adjustment assembly on one side of the wire winding assembly, and a take-up assembly on one side of the adjustment assembly.

[0008] The adjustment assembly includes an adjustment groove, inside which is a lead screw, one end of which is equipped with a motor, and outside which is a lead screw nut. The lead screw nut is connected to a fixing block, and the fixing block is connected to a tension adjustment wheel. A piezoelectric ceramic tension sensor is embedded in the surface of the tension adjustment wheel.

[0009] As a preferred embodiment of this utility model, the wire feeding assembly includes a wire feeding drive motor and a first roller, and the winding assembly includes a winding drive motor and a second roller. The first roller and the second roller are provided with threaded grooves, and bolts are provided inside the threaded grooves. The two ends of the cutting wire are respectively wound with bolts, and the threads and threaded grooves are compatible.

[0010] As a preferred embodiment of the present invention, the first guide component and the second guide component each include silicon nitride ceramic limiting wheels arranged symmetrically on the upper and lower sides, and the surface of the silicon nitride ceramic limiting wheels is coated with a diamond-like coating.

[0011] As a preferred embodiment of this utility model, the cutting wire passes through the guide nozzle, and the braking assembly includes a magnetic powder brake, a coupling, heat sink fins, a temperature sensor, a tension sensor, and a cooling fan.

[0012] As a preferred embodiment of this utility model, the guide wheel and the winding assembly respectively include a roller and a connecting shaft. The connecting shaft is connected to the machine tool through a bearing seat, and the roller is symmetrically provided with limiting plates.

[0013] As a preferred embodiment of this utility model, the machine tool integrates a controller, which is connected to the tension sensor, the wire feeding drive motor, the piezoelectric ceramic tension sensor, the motor, and the magnetic powder brake via a CAN bus, and has a built-in fuzzy PID algorithm.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, a wire EDM machine tool with an intelligent tension adjustment system is provided. Utilizing a structure comprising a guide assembly, a braking assembly, a guide nozzle, a guide wheel, a wire winding assembly, an adjustment assembly, and a take-up assembly, the cutting wire is released by the wire unloading assembly, guided by a silicon nitride ceramic limit wheel, and then a magnetic powder brake applies braking force. A piezoelectric ceramic tension sensor provides real-time tension feedback to the controller. The CAN bus, combined with a fuzzy PID algorithm, drives the lead screw to adjust the position of the tension wheel and coordinates with the torque of the magnetic powder brake to maintain tension fluctuations ≤±1%. A temperature sensor monitors the brake's temperature rise; exceeding the limit triggers the cooling fan. The wire winding assembly's limit plate constrains the wire feeding trajectory, and the take-up assembly synchronously recovers waste wire. This solves the problem that traditional wire EDM machines rely heavily on mechanical springs or counterweights for wire tension control, resulting in delayed response and insufficient accuracy. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the overall plan of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a structural schematic diagram of some components of this utility model.

[0019] In the diagram: 1. Machine tool; 101. Clamping module; 2. Wire feeding assembly; 3. Cutting wire; 4. First guide assembly; 5. Braking assembly; 6. Guide nozzle; 7. Wire guide wheel; 8. Second guide assembly; 9. Wire winding assembly; 10. Adjustment assembly; 11. Rewinding assembly; 1011. Adjustment groove; 1012. Lead screw; 1013. Motor; 1014. Lead screw nut; 1015. Fixing block; 1016. Tension adjusting wheel; 1017. Piezoelectric ceramic tension sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0025] A wire cutting machine tool with an intelligent tension adjustment system includes a machine tool 1, a clamping module 101 on the machine tool 1, a wire feeding assembly 2 inside the machine tool 1, a cutting wire 3 on the wire feeding assembly 2, a first guide assembly 4 on the cutting wire 3, a braking assembly 5 on one side of the first guide assembly 4, guide nozzles 6 symmetrically arranged on the cutting wire 3, a guide wheel 7 on the cutting wire 3, a second guide assembly 8 on one side of the guide wheel 7, a wire winding assembly 9 on one side of the second guide assembly 8, an adjustment assembly 10 on one side of the wire winding assembly 9, and a take-up assembly 11 on one side of the adjustment assembly 10. The adjustment assembly 10 includes an adjustment groove 1011, a lead screw 1012 inside the adjustment groove 1011, a motor 1013 at one end of the lead screw 1012, and a lead screw nut 1014 outside the lead screw 1012. The mother 1014 is connected to the fixing block 1015, the fixing block 1015 is connected to the tension adjusting wheel 1016, the surface of the tension adjusting wheel 1016 is embedded with a piezoelectric ceramic tension sensor 1017, the cutting wire 3 is released by the first roller of the wire feeding assembly 2, the cutting wire 3 passes through the upper and lower silicon nitride ceramic limit wheels and moves in a directional manner, after the magnetic powder brake 5 applies the initial braking force, the piezoelectric ceramic tension sensor 1017 monitors the tension in real time, the controller 12 receives data through the CAN bus, and uses the fuzzy PID algorithm to dynamically adjust the drive screw 1012 to move the tension adjusting wheel 1016, and synchronously adjust the torque of the magnetic powder brake 5 to maintain the tension fluctuation ≤±1%. During the cutting process, the temperature sensor monitors the temperature rise of the magnetic powder brake, and the cooling fan is started to dissipate heat when the limit is exceeded. The limit plate of the wire winding assembly 9 constrains the arrangement of the cutting wire, and the winding assembly 11 recovers the waste wire.

[0026] The wire feeding assembly 2 includes a wire feeding drive motor and a first roller; the winding assembly 11 includes a winding drive motor and a second roller. The first and second rollers have threaded grooves, and bolts are installed inside the threaded grooves. Bolts are wound around both ends of the cutting wire 3, with the threads and threaded grooves being compatible. This design of the threaded grooves and bolts in the wire feeding and winding assemblies simplifies the wire installation and disassembly process, improves wire replacement efficiency, and enhances the reliability of wire fixing through thread locking, preventing slippage. The first guide assembly 4 and the second guide assembly 8 each include symmetrically arranged silicon nitride ceramic limit wheels. The surface of the silicon nitride ceramic limit wheels is coated with a diamond-like carbon coating. The high wear resistance of the silicon nitride ceramic limit wheels and the low friction characteristics of the diamond-like carbon coating reduce wear during the wire guiding process, ensure guiding accuracy, and extend the service life of the guide assembly. The cutting wire 3 passes through the guide nozzle 6. The braking assembly 5 includes a magnetic powder brake, a coupling, and heat sink fins. Temperature sensors, tension sensors, and cooling fans are integrated into the braking assembly, which combines a magnetic powder brake with multiple sensors to achieve real-time tension feedback control. Heat sinks and a cooling fan ensure brake temperature control, preventing overheating failure and improving system reliability. The wire guide wheel 7 and the wire winding assembly 9 each include a roller and a connecting shaft. The connecting shaft is connected to the machine tool 1 via a bearing seat. Symmetrical limit plates are provided on the rollers. The bearing seat connection structure between the wire guide wheel and the wire winding assembly reduces rotational resistance. The limit plates prevent wire deviation, ensuring aligned cutting paths and improving processing consistency. The machine tool 1 integrates a controller, which connects to the tension sensor, wire feeding drive motor, piezoelectric ceramic tension sensor 1017, motor 1013, and magnetic powder brake via a CAN bus. It incorporates a fuzzy PID algorithm. The integrated controller coordinates with multiple components via the CAN bus. The fuzzy PID algorithm integrates dynamic response and steady-state accuracy to achieve adaptive tension adjustment, coping with complex working condition fluctuations.

[0027] The working process of this utility model is as follows: When using this type of wire cutting machine tool with an intelligent tension adjustment system, the cutting wire 3 is first released by the first roller of the wire feeding assembly 2. The cutting wire 3 passes through the upper and lower silicon nitride ceramic limit wheels and moves in a directional manner. After the magnetic powder brake 5 applies the initial braking force, the piezoelectric ceramic tension sensor 1017 monitors the tension in real time. The controller 12 receives data through the CAN bus and uses the fuzzy PID algorithm to dynamically adjust the drive screw 1012 to move the tension adjustment wheel 1016, and synchronously adjusts the torque of the magnetic powder brake 5 to maintain the tension fluctuation ≤±1%. During the cutting process, the temperature sensor monitors the temperature rise of the magnetic powder brake. When the temperature exceeds the limit, the cooling fan is activated to dissipate heat. The limit plate of the wire winding assembly 9 constrains the arrangement of the cutting wire, and the winding assembly 11 recovers the waste wire.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linear cutting machine with intelligent tension adjustment system, comprising a machine tool (1), characterized in that: The machine tool (1) is provided with a clamping module (101), and the inside of the machine tool (1) is provided with a wire feeding assembly (2). The wire feeding assembly (2) is provided with a cutting wire (3). The cutting wire (3) is provided with a first guide assembly (4). A braking assembly (5) is provided on one side of the first guide assembly (4). The cutting wire (3) is symmetrically provided with guide nozzles (6). The cutting wire (3) is provided with a guide wheel (7). A second guide assembly (8) is provided on one side of the guide wheel (7). A wire winding assembly (9) is provided on one side of the second guide assembly (8). An adjustment assembly (10) is provided on one side of the wire winding assembly (9). A take-up assembly (11) is provided on one side of the adjustment assembly (10). The adjustment assembly (10) includes an adjustment groove (1011), inside which is provided a lead screw (1012), one end of which is provided a motor (1013), and outside of which is provided a lead screw nut (1014), which is connected to a fixing block (1015), which is connected to a tension adjustment wheel (1016), and a piezoelectric ceramic tension sensor (1017) is embedded on the surface of the tension adjustment wheel (1016).

2. The linear cutting machine with intelligent tension adjustment system according to claim 1, characterized in that: The wire feeding assembly (2) includes a wire feeding drive motor and a first roller. The winding assembly (11) includes a winding drive motor and a second roller. The first roller and the second roller are provided with threaded slots, and bolts are provided inside the threaded slots. The two ends of the cutting wire (3) are respectively wound with bolts, and the threads and threaded slots are compatible.

3. The linear cutting machine with intelligent tension adjustment system as claimed in claim 1 wherein: The first guide component (4) and the second guide component (8) respectively include silicon nitride ceramic limiting wheels arranged symmetrically on the upper and lower sides, and the surface of the silicon nitride ceramic limiting wheels is coated with a diamond-like coating.

4. The linear cutting machine with intelligent tension adjustment system according to claim 1, characterized in that: The cutting wire (3) passes through the guide nozzle (6), and the braking assembly (5) includes a magnetic powder brake, a coupling, heat sink fins, a temperature sensor, a tension sensor, and a cooling fan.

5. The linear cutting machine with intelligent tension adjustment system as claimed in claim 1 wherein: The guide wheel (7) and the winding assembly (9) respectively include a roller and a connecting shaft. The connecting shaft is connected to the machine tool (1) through a bearing seat. The roller is symmetrically provided with a limiting plate.

6. The linear cutting machine with intelligent tension adjustment system according to any one of claims 2 or 4, characterized in that: The machine tool (1) integrates a controller, which is connected to a tension sensor, a wire feeding drive motor, a piezoelectric ceramic tension sensor (1017), a motor (1013), and a magnetic powder brake via a CAN bus. It also incorporates a fuzzy PID algorithm.

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