Machine Introduction

The EB808N is the largest moving table-type ZNC EDM machine, featuring an X-axis travel of 700mm, Y-axis travel of 500mm, Z-axis travel of 300mm, an auxiliary axis travel of 380mm, and a worktable size of 1000mm x 600mm. The XYZ axis of this machine are equipped with precision-grade screws and a 0.5μm optical scale, ensuring machining accuracy and stability.
With its bed-type design, stable structure, and high-quality key components, along with its greater load capacity, the EB808N provides customers with a reliable and efficient machining solution. Whether it’s for large mold machining, industrial parts machining, or other large workpiece machining needs, the EB808N can meet the challenge. Its superior XYZ-axis system allows for high-precision machining, and the solid foundation provided by the bed-type structure makes the EB808N an ideal choice for various machining scenarios.
Below are the three relevant industries.

• Casing and Lid of the Hydraulic Pool's Filtration Pump: Feature structural reinforcement ribs, and the mold requires thin sheet machining. This type of large mold, which demands high precision, is ideal for machining with the EB808N. Its stable structure and large travel range ensure accuracy and efficiency in machining.
• Monitor Housing: Many large brand monitor back covers require EDM texturing. Although the molds for monitor housings are large, the machining difficulty is not high, making the EB808N an economical and practical choice.
• Tray Mold: The elevation and structural reinforcement ribs underneath tray molds are relatively narrow, requiring EDM processing. The EB808N's large worktable and bed-type design can easily handle these molds that require fine machining.

High-Rigidity Structure:

• The machine body structure utilizes CAE (Computer-Aided Engineering) to simulate structural analysis of each axis during actual operation. Therefore, we have adopted a high-rigidity T-shaped body structure to reduce load and thermal deformation issues, ensuring long-term precision of the machine.
• Made from Meehanite cast iron and stress-relieved through heat treatment, the structure features a high-rigidity, symmetrically balanced design, which helps reduce load and thermal deformation.

XY-Axis Travel Structure:

• The X and Y axis guideways are composed of a combination of V-shaped and flat structures, ensuring that the perpendicularity and parallelism remain unchanged over time. This structural design ensures that the EDM machine maintains excellent machining precision even during extended operation, with no changes in perpendicularity or parallelism, providing a stable foundation for machining tasks.
• The sliding contact surfaces of the X and Y axes are equipped with low-friction, wear-resistant plates (TURICE-B). These wear-resistant plates ensure precision and smooth operation under heavy loads. With a low coefficient of friction, they reduce frictional resistance while maintaining stable operation under heavy loads, ensuring machining accuracy and operational flexibility of the EDM machine. This design not only enhances operational comfort but also ensures machining precision and stability.

Z-Axis Structure and Precision Control:

• The Z-axis is equipped with a linear guide and high-precision ball screw, a structural design that ensures the stability and accuracy of Z-axis movement. The linear guide provides a smooth motion path, while the high-precision screw guarantees precise movement of the Z-axis, thereby ensuring the accuracy and stability of the machine while manufacturing. This structure, combined with a PWM servo system (equivalent to CNC grade), delivers maximum operational efficiency. The PWM (Pulse Width Modulation) servo system can precisely control the speed and position of the motor, providing more accurate motion control, which allows the EDM machine to achieve high efficiency during the machining process.
• The Z-axis also features an additional electric auxiliary stroke. This ensures that the Z-axis can perform precise vertical movements through the linear guide and high-precision screw and furthermore extend the Z-axis movement range and flexibility further through the electric auxiliary stroke. This electric auxiliary stroke can provide additional movement support when needed, helping the EDM machine adapt to different machining requirements, thus enhancing the versatility and flexibility of the machining process.

Controller Performance and Features

● Automatic Indexing: The system allows users to directly select the material and area to be machined. After inputting the machining depth and starting height, the system automatically searches for the optimal conditions and generates the machining program. Users can also edit and save this machining program, which can be reloaded for use in future operations without altering the original database content.
● High-Efficiency Discharge Module: The discharge circuit uses MOSFET transistors and is equipped with a fast discharge device (POWER SINK) to improve machining efficiency and reduce electrode wear. The machining circuit employs FPGA IC components, enabling faster monitoring of the discharge state (capable of single discharge waveform monitoring), which is more effective in preventing carbon buildup (ARC). It also provides users with the ability to set ARC voltage levels, ARC time, and ARC sensitivity to improve machining efficiency more effectively.
Additionally, it offers two-stage gap (GAP) and two-stage pause (OFF TIME) functions to assist users by automatically adjusting machining parameters to the two-stage function when any ARC condition occurs during machining, thus achieving better machining efficiency.
These design features and functions are all aimed at enhancing machining efficiency, reducing wear, and providing better operability and stability.
● Servo Control: The servo control system uses DSP digital processing, providing faster response times, with feedback loop control up to every 0.2 ms, which is faster than the typical response time of over 1 ms for general PC-based controllers. This characteristic enhances the stability of the spindle during machining, ensuring smoother machine operation.
The ZNC EDM machine also offers a multi-stage debris removal mode, which is useful for deep hole machining and thin plate machining, providing more flexible machining options. Furthermore, the servo protection function is a crucial feature that prevents electrode damage due to improper user operation, ensuring the safety and longevity of the electrode during the machining process.
These features make the ZNC EDM machine's servo control more flexible, stable, and safe, capable of handling various machining demands while ensuring high-quality machining results.
● Multiple Machining Parameters: The system can store up to 50 files, each containing 200 sets of machining parameter tables for saving machining conditions.

Gallery

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  Machining conditions and depth input are displayed on a single screen, allowing users to grasp the information immediately.

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  The AI automatic indexing function allows users to directly select the material and area to be machined. After inputting the machining depth and starting height, the system automatically searches for the optimal conditions.

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  The one-page multifunctional calibration includes edge finding, inner hole finding, outer circle finding, vertex finding, and circle center finding.

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  When the fire sensor detects flames, it sends an alarm signal and pauses the machine to prevent a fire from occurring.

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  When the worktable catches fire due to excessive oil temperature, the fire extinguisher is activated to extinguish the fire, providing a second layer of protection beyond the fire sensor.

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  The adjustable electrode head allows for quick electrode replacement and adjustments for parallelism and verticality.

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  The three-jaw chuck allows dielectric fluid to pass directly through the jaws and flow along the electrode into the mold, enhancing debris removal efficiency.

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  The vertical filter cartridge design makes it easy to replace the filter and prevents the filter from breaking during replacement, avoiding spills of oil and metal debris.