The EDM drilling machine is a precision equipment that uses the principle of electric spark erosion to process conductive materials such as metals. It is widely used in aviation, aerospace, mold manufacturing, electronics, instrumentation, and other industries to process various difficult-to-process materials and holes of complex shapes. This article will introduce the application of EDM drilling machines as well as operating skills and precautions.
1. The basic principle of EDM drilling machines
Electric spark drilling uses a continuous or discontinuous pulse power supply to erode the material through the local high temperature generated by the pulse discharge between the electrode and the workpiece to achieve the processing of the workpiece. When the distance between the electrode and the workpiece is small to a certain value, the spark discharge is generated under the action of the pulse voltage, and the local instantaneous temperature can reach thousands of degrees Celsius, causing the local metal material on the surface of the workpiece to melt or even gasify, thereby etching a small hole on the workpiece. By controlling the relative position of the electrode and the workpiece, precise hole processing can be achieved.
2. Application scope of EDM drilling machines
Electric spark drilling machines have been widely used in many fields due to their non-contact processing characteristics. In the mold manufacturing industry, it is used to process hot and cold runner holes, ejector holes, sleeve holes, precision micro holes, etc.; in the aerospace field, it is used for micro-hole processing of components such as turbine blades and combustion chambers; in the electronics industry, it is used for processing micro-holes such as print heads and precision filters; in other industries, such as medical equipment and precision machinery, EDM drilling machines also play an important role.
3. Operation skills of EDM drilling machines
Electrode preparation: Select suitable electrode materials and sizes. Commonly used electrode materials include copper and brass. The electrode should be kept sharp so that it can smoothly penetrate the oxide layer on the surface of the workpiece.
Working fluid selection: According to the different processing materials, select suitable working fluids, such as deionized water, special EDM oil, etc., to provide good cooling and chip removal effects.
Parameter setting: Reasonably set electrical parameters (such as current, pulse width, pulse interval, etc.) and machine tool parameters (such as servo speed, rotation speed, etc.) to obtain the best processing effect.
Accurate positioning: Ensure that the initial position of the electrode and the workpiece is accurate to avoid processing deviations due to positioning errors.
Monitor the processing process: closely monitor the current changes and working fluid circulation during the processing, and adjust the parameters or handle abnormal situations in time.
4. Precautions for EDM drilling machines
Safety first: the operator should wear protective equipment, such as protective glasses, earplugs, etc., and ensure that the equipment is well grounded.
Prevent misoperation: before starting the equipment, check whether all switches and buttons are in the correct position to prevent damage caused by misoperation.
Avoid short circuits: during the processing, avoid direct contact between the electrode and the workpiece to prevent short circuits.
Regular maintenance: regularly maintain the EDM drilling machine, including cleaning, lubrication, replacement of worn parts, etc., to ensure the normal operation of the equipment.
Train qualified personnel: ensure that the operator has received professional training, is familiar with the equipment performance and operating procedures, and avoids accidents caused by improper operation.
As an efficient and precise processing equipment, EDM drilling machine plays an increasingly important role in modern manufacturing. By mastering its principles, application scope, operating skills, and precautions, it can greatly improve processing efficiency and quality and create more value for the enterprise. At the same time, with the continuous advancement of technology, the performance of EDM drilling machines will be more excellent, the scope of application will be wider, and it will make greater contributions to the development of the manufacturing industry.
As an EDM drilling machine supplier, BOFENG is committed to providing customers with high-quality products and excellent services. We not only focus on the quality and performance of our products but also strive to continuously innovate and improve to meet the changing needs of our customers.
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david@wxbofeng.com