The difference between fast CNC WEDM and medium speed CNC WEDM, and technical analysis

The development status of fast wire cutting and medium speed wire cutting processing technology

As the name suggests, fast wire processing is named because the electrode wire runs at high speed during the cutting process. The fast-moving wire processing machine tool is an original electrical processing machine tool in my country. After decades of continuous improvement and development, it has now become an important processing method in the manufacturing industry. It can meet the requirements of middle and low-end mold processing and other complex parts manufacturing, and occupies a considerable weight in the middle and low-end market.

The biggest advantage of fast-moving wire processing machine tools is that it has a good performance-to-price ratio. Because of its practicability and economy, it has a larger market in China. Traditional fast-moving wire processing uses a one-time cutting process, the processing efficiency is about 40 mm²/min, the surface roughness is about Ra3.0μm, the surface has more obvious lines, and the processing accuracy is about 0.02 mm.

In order to improve the processing quality, manufacturers of fast-moving wire processing machine tools improved the relevant parts of the machine tool by referring to the multiple cutting process, and the so-called "middle wire-moving machine tool" appeared. The numerical control precision of the machine tool, pulse power supply, wire feeding system, and process database have been greatly improved. Improve the processing accuracy and improve the surface quality.

The current technical indicators of the middle wire processing machine tool: the efficiency of one cut is 180mm²/min, the surface roughness after multiple cuts is Ra≤1.0μm, the average efficiency at this time is 50mm²/min, and the processed surface is glossy There is no obvious cutting stripes, the processing accuracy is 0.01 mm, and the electrode wire loss is less than 0.01 ㎜ /200,000 ㎜². These performance indicators seem to be quite good, but it should be noted that obtaining these indicators needs to ensure that all links are well. Once there are discrepancies, such as changes in the concentration of the working fluid and the loss of the electrode wire, the stability of the processing quality will be affected.