Wire cut EDM machine refers to a machining process that uses a tool to discharge electrical discharges into a metal workpiece thousands of times. Wire cut EDM is a non-traditional process, although not a new process. It can be used for parts that are resistant to conventional machining processes only if the machined part is conductive. Due to its high versatility, it can be used to cut hard metals
Benefits of Wire Cut EDM Machine
Precision: Wire cut EDM machines can achieve high levels of precision and accuracy in the final product. This is because the wire used in the process is very thin, allowing for tight tolerances and fine details.
Versatility: Wire cut EDM machines can cut various materials, including hardened steels, titanium, and tungsten carbide. It can also cut complex shapes, angles, and contours that would be difficult or impossible to achieve with traditional cutting methods.
No tool wear: Unlike traditional cutting methods that use a physical tool to remove the material, wire cut EDM machines has no physical contact with the workpiece. This means there is no tool wear, and the wire electrode remains consistent throughout the cutting process, resulting in consistent part quality.
Minimal material waste: Wire cut EDM machines uses a very narrow cutting path, which results in minimal material waste. Additionally, the process can be programmed to cut close to the workpiece, reducing material waste.
Speed: Wire cut EDM machines can quickly cut through materials, especially compared to traditional machining methods. This allows for faster production times and shorter lead times for projects.
Reduced burrs: Wire cut EDM machines produces minimal burrs, which are small, raised edges or rough areas on the part’s surface. This can reduce post-processing time and improve the overall quality of the final product.
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Construction Area
The company currently has a modern factory of more than 20 acres in the high-tech zone of Suzhou City, Jiangsu Province, with a construction area of more than 20,000 square meters, more than 80 employees, and engineers account for 30%.
Our service
24-hour service. The after-sales service in different countries is mainly provided by agents from different countries. If customers need to repair themselves, we can provide relevant spare parts.
Our Certificate
The company has passed the "ISO9001" quality management system certification, won the national "high-tech enterprise", "provincial private technology enterprise", and is the director unit of "China Machine Tool Industry Association Special Processing Machine Tool Branch".
Years Of Experience
Engaged in electric machining research and development services for over 20 years. Fully CNC mirror EDM was successfully developed and put into production. Introduce modern enterprise management mode (enhance soft power).
Materials Wire Cut EDM Machine Can Cut
Aluminum
Aluminum has excellent thermal and electrical conductivity properties. However, aluminum is naturally soft and can be challenging to cut with the process as it may result in a gummy build-up after machining.
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Titanium
Wire cut EDM machine is perfect for titanium because the process can withstand the stickiness of this alloy and break up lengthy chips. However, you need deionized water as the dielectric medium to help control heat generation during machining.
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Steel
Steel is a very strong metal. As a result, many manufacturers favor using a wire cut EDM machine over a CNC machine. However, the material generates a lot of heat, so one needs to take the necessary precautions.
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Brass
Brass is easy to cut using the machine because it has high tensile strength. However, the cutting speed should be slow because it is a soft metal.
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Graphite
It may be difficult to cut graphite using conventional cutting tools. But the wire cut EDM machine process is appropriate because the wire is sharp, preventing particle pull-out.
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What is the Difference Between EDM Machine and Wire Cut EDM Machine
Conventional EDM machine use a tool to transfer current from the cathode of the tool along the sheet metal to the anode, and the current reacts to melt or vaporize the metal. Because the dielectric fluid is used, almost no material debris is generated and washed away from the work piece. Instead of cutting the material, the EDM machine process melts or vaporizes it, producing precise lines and producing less debris, without spending too much work space.
On the other hand, wire cut EDM machine is tensioning the thin wire, the subsequent discharge of a live current that acts as a cathode and is guided along the desired cutting path or slit. The dielectric fluid immerses the wire and work piece in water, filtering and guiding the spark. Fine lines allow for more precise cuts, and the slitting technology can be up to three inches wide and accurately positioned at +/-0.0002 inches. The high precision of the wire-cut EDM machine allows for complex three-dimensional cutting processes and the manufacture of highly accurate punch dies.
How to Use a Wire Cut EDM Machine
Preparing the Workpiece: First, the material to be cut is securely mounted on the worktable and properly aligned. This step is crucial for accuracy. We typically use materials like metals and alloys that are electrically conductive.
Programming the CNC Machine: The desired shape or design is programmed into the CNC control unit. This step involves detailed planning, ensuring that the wire path is optimized for precision. The programming is often done using CAD (Computer-Aided Design) software, which translates complex designs into executable paths for the wire.
Initiating the Cutting Process: The machine then starts the cutting process. The wire electrode, charged with electricity, is slowly fed through the workpiece. This wire is precisely controlled by the CNC system, which dictates its movement along the programmed path.
Creating Electrical Discharges: Electrical discharges (sparks) occur between the wire and the metal as the wire approaches the workpiece. These sparks generate intense heat, which melts and vaporizes the metal along the wire’s path. The process is delicately balanced – the wire never touches the workpiece, maintaining a small spark gap.
Controlling the Dielectric Fluid
The entire cutting area is submerged in or flushed with dielectric fluid. This fluid serves multiple purposes: it cools the area, flushes away the eroded metal particles, and helps control the electrical discharges for precision cutting.
Managing the Wire
As the wire moves and cuts the material, it continuously unspools from a feeding mechanism and is taken up on the other side. This ensures that the wire-cutting material is always fresh and not worn down by previous discharges.
Monitoring and Adjusting
Throughout the process, the machine continuously monitors and adjusts variables like wire tension, speed, electrical parameters, and fluid flow. This constant adjustment is critical to achieving the high precision and quality of the cut.
Finalizing the Cut
Once the cutting is complete, the workpiece is removed, and any necessary post-processing is done, such as cleaning or additional machining.
Application of Wire Cut EDM Machine
Aerospace
The preferred machining method for manufacturers of aerospace parts, wire EDM CNC cutting yields parts with tight tolerances. This procedure is specifically used for parts that cannot tolerate the high temperature and stress associated with traditional cutting tools, in conjunction with the waterjet cutting procedure.
Medical
Wire cut EDM machines are used in optometry and dentistry, among other medical fields, producing complex parts with high accuracy. Also, medical equipment is commonly made from metals compatible with wire EDM services and CNC milling.
Automotive Industry
The parts in the automotive industry come in complex shapes and sizes and are mostly hard. As a result, the industry favors using wire cut EDM machines because the process does not rely on mechanical forces, and the wire electrode does not need to be stronger than the workpiece. The process applies to making holes and cavities to customize automotive car parts like bumpers, dashboards, car doors, and many more.
Electronics
With the wire cut EDM machines, microelectrodes used in microelectronics for circuitry and sensors can be produced with efficiency. These microelectrodes frequently need very tight tolerances to perform properly in electronic equipment. It is a great option because it can produce these components with micron-level accuracy. It is also useful in creating connector pins and lead frames for integrated circuit (IC) packaging due to its high level of precision.
Components of Wire Cut EDM Machine
Wire Electrode: The star of the show, the wire electrode, is typically made of brass or coated copper. It’s fragile, often ranging from 0.004 to 0.012 inches in diameter. This wire is continuously fed from a spool through the workpiece, ensuring a constant, fresh-cutting surface.
Dielectric Fluid System: This system circulates deionized water or a similar dielectric fluid around the cutting area. The fluid serves a triple role: it cools the heated zone, flushes away metal particles, and acts as an electrical insulator until the spark occurs. Managing the dielectric fluid is critical for efficient and precise cutting.
CNC Control Unit: Modern wire cut EDM machines are equipped with sophisticated CNC systems. These computers precisely control the wire’s path, allowing for complex cuts and shapes. The CNC unit is the brain of the operation, translating digital designs into physical parts.
Power Supply: The power supply unit regulates the electrical discharges between the wire and the workpiece. It precisely controls the voltage, current, and duration of the sparks, which are critical for achieving the desired cutting effect.
Worktable and Clamping System
The worktable is where the magic happens. It must be stable and precisely aligned with the machine’s cutting path. The clamping system holds the workpiece in place, ensuring no movement during cutting.
Wire Transport System
This system handles the movement and tension of the wire electrode. It’s a delicate balance to maintain the proper tension, too much and the wire might break, too little and the cuts won’t be precise.
Water Reservoir and Filtration System
Given the importance of the dielectric fluid, a robust reservoir and filtration system are essential. It ensures the fluid is clean and at the right temperature, maintaining optimal cutting conditions.
Automatic Wire Threading (AWT) System
Some advanced machines have an AWT system, which automatically threads the wire through the start hole in the workpiece. This feature is a time-saver and reduces manual labor.
How to Improve the Cutting Speed of the Wire Cut EDM Machine?
Use High-Quality Wires
Using high-quality and well-maintained wire electrodes with the appropriate diameter and material composition can improve cutting performance. Nornally, the speed of 0.25mm Zinc coated wire is higher than the 0.20mm brass wire.
Optimize Power Settings
Adjust the power settings (Pon, Poff, current, and voltage) to find the optimal balance between material removal rate and electrode wear.
Choose the Right Dielectric Fluid
Select a dielectric fluid(EDM Resin ) that provides good flushing and cooling properties. High-quality dielectric fluids can improve cutting speed and accuracy.
Maintain Stable Flushing
Ensure a consistent and stable flow of dielectric fluid around the workpiece to effectively remove debris and control sparking.
Proper Wire Tension and Alignment
Ensure that the wire is correctly tensioned and aligned. Improper tension or alignment can lead to poor cutting performance.
Optimize Tool Path Programming
Use efficient tool path programming to minimize unnecessary movements and optimize cutting paths for higher speed.
Monitor and Adjust Machining Conditions
Continuously monitor the cutting process and make adjustments as needed to maintain optimal conditions.
Maintain Machine Accuracy
Regularly calibrate and maintain the machine to ensure that it operates at peak performance. Any mechanical issues can negatively impact cutting speed.
Choose Optimal Cutting Parameters
Experiment with different cutting parameters (such as voltage, current, and pulse duration) to find the combination that offers the best balance of speed and accuracy.
How to Maintain Wire Cut EDM Machine
Cleaning and lubrication
The cleaning and lubrication of the wire cut EDM machine is the basis of maintenance and maintenance. During use, a large amount of metal shavings and oil will be generated, which will affect the normal operation of the equipment. Therefore, the equipment must be cleaned after each use, including cleaning the workbench, guide rails, sliders, electrode heads, and other components. When cleaning, be careful not to use detergents containing acid and alkali components, so as not to cause damage to the equipment.
Check the electrode tip and filter
The electrode tip of the wire cut EDM machine is one of the most vulnerable parts in the cutting process. Therefore, regularly check the wear of the electrode tip, and replace the severely worn electrode tip in time to ensure the cutting quality. At the same time, the filter screen also needs to be cleaned and replaced regularly to ensure the normal operation of the equipment.
Check the electrolyte
The electrolyte of the wire cut EDM machine is one of the essential parts of the cutting process. The quality and concentration of the electrolyte directly affect the cutting quality and equipment life. Therefore, regularly check the quality and concentration of the electrolyte, and replace the aging electrolyte in time to ensure the cutting quality and equipment life.
Check the power supply and wiring
The power supply and wiring of the wire cut EDM machine are the guarantees for the normal operation of the equipment. Therefore, regularly check the connection of the power supply and line to ensure the normal operation of the power supply and line. At the same time, pay attention to the grounding of the equipment to ensure the safe operation of the equipment.
FAQ
As one of the leading wire cut EDM machine manufacturers in China, we warmly welcome you to buy discount wire cut EDM machine from our factory. All customized machines are with high quality and low price.
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