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Milling Process of CNC Drilling EDM

CNC drilling EDM plays a significant role in modern manufacturing. Its efficient and precise machining capabilities make it an ideal choice for handling complex parts and difficult-to-machine materials. This article will provide a detailed introduction to the milling process of the CNC drilling EDM, including its machining methods, precision requirements, electrical parameters, and electrode dimensions.


Selection and Optimization of Machining Methods for CNC Drilling EDM


When using the CNC drilling EDM for milling, the choice of machining method is crucial. For machining profiles or deep grooves, generating arc segment programs can be chosen, as this method can improve machining efficiency and reduce electrode wear. When the machine is processing along a curved surface, selecting a linear machining method and including entry and exit programs can better compensate for electrode wear. Additionally, optimizing the design of the program not only helps improve machining quality but also reduces electrode consumption in actual production, thereby lowering overall costs.


Allowance and Precision Control in CNC Drilling EDM


In the milling process of the CNC drilling EDM, machining allowance is a key parameter. The value of the machining allowance should be greater than the discharge gap to ensure a high-quality surface in the finishing stage. In the finishing process, the machining allowance is not zero; the previous process needs to leave an appropriate allowance for the subsequent process. The precision of milling directly affects the quality of the final product. The higher the machining precision, the closer the chord line approximates the spatial curve, which means the complexity and length of the program will increase. In actual machining, roughing can choose lower precision to reduce the number of program segments, thus improving production efficiency.


Electrical Parameters and Electrode Size Compensation in CNC Drilling EDM


The selection of electrical parameters is also very important in the milling process of the CNC drilling EDM. The electrical parameters should refer to the machining allowance, especially in ultra-finishing, where choosing a positive polarity machining method can effectively flatten the convexities caused by discharge marks. Electrode wear compensation values are usually determined based on experience and are related to electrical parameters, electrode materials, and the usage of working fluid. For each machining operation, the actual measured value of the electrode diameter needs to be input, so that the calculation of the electrode wear compensation value only needs to focus on the Z-axis direction, thereby improving machining accuracy.


The milling process of CNC drilling EDM has multiple advantages, including high precision, high efficiency, and the ability to machine complex shapes. Understanding and optimizing machining methods, allowance control, electrical parameters, and electrode size compensation can significantly enhance machining quality and production efficiency. With continuous technological advancements, the CNC drilling EDM will play an important role in more fields, providing powerful support for the development of the manufacturing industry.

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