Comparison of the most thermal power spark machini

Comparison between EDM and NC milling content abstract: EDM and NC milling have their own advantages. Their application in mold processing should be comprehensively considered from the aspects of product structure and operators. This paper provides the experience of a mold processing equipment production in the United States, which is also of reference significance to Chinese manufacturers

EDM processing enterprises have weak innovation ability, and the two processes of machining and NC milling have their own merits. Their application choice in mold processing should be comprehensively considered from the aspects of product structure and operators. This paper provides the experience of a mold processing equipment production in the United States, which is also of reference significance to Chinese manufacturers

in many mold manufacturers, the choice of random EDM and CNC milling is far less clear than in the past. Changing technology is changing convention

for example, milling can now be more widely used than before. The machining center with high feed speed, accurate and complex tool path makes it more cost-effective for mold manufacturers to apply fast and small amount of milling. In many applications involving hard metals, complex details and smooth surfaces, milling replaces EDM

but EDM technology has also become more perfect

Makino company in Ohio, USA, is a manufacturer that provides machining centers and EDM machines. They have their own unique views on the comparison between EDM and milling. Billy gro is the mold business manager of Dow Chemical and Dow Chemical Automotive Division in order to meet the market and customer needs of the automotive industry. He often tells customers which metal cutting process plays an important role in their production. He said there was no clear answer. However, there are still important principles to follow. Some descriptions listed below summarize some common rules. Grobe emphasizes that the comparison provided here is not aimed at EDM and commonly referred to as milling. Instead, this comparison is between EDM and so-called "high-performance" milling, which utilizes machine tools and control systems designed for complex, accurate, high-speed feed milling. He said that with such constraints in mind, every process here often plays a role

when to use edm

for internal sharp corners

grobe believes that unless edge milling is perfect, EDM will still be the dominant process for internal corners

for most complex shapes

especially when the milling cutter is difficult to reach the complex surface, EDM has its significance

where deep cutting is required

where the aspect ratio (tool length/diameter) is particularly high, it is more clear to avoid using milling

in unattended cutting

edm is a process that is easier to automate because it is more predictable than milling. In the process of loading electrodes and workpieces with robots, a complete EDM process containing electrode manufacturing can operate effectively all day and all night, with almost no personnel

for high-tech parts, generally, the programming time of machining electrodes is shorter than that of milling metal structures. In more complex processing applications, this difference becomes more obvious. Once it is assumed that there is only EDM, the working time required to make the machining center work may be so high that EDM is still a suitable choice

where EDM finishing is specified

edm can now provide better surface quality than before. The progress is not only to improve the surface finish of graphite electrodes, but also to produce narrow heat affected zone (HAZ)

when to use milling

you can use milling at any time you can

for textured surfaces

EDM adds an additional step in the process of texturing. EDM processed surface is different from the milled surface, which usually requires polishing before texture appears

when the workpiece is easily accessible

if the shape is open and the aspect ratio is small, milling is used

the combination of similar workpieces of series parts and multi slot tools provide opportunities to reduce the time spent in programming, including the time spent on the best method of milling metal structure

milling is available for parts that cannot have heat affected zone

where accuracy is required

milling makes it easier to control strict tolerances. In EDM, electrode machining, fixture replacement, and using multiple electrodes on the same part will produce accuracy superposition. At the same time, when better surface finish is obtained, the accuracy of EDM decreases

and milling is easier to control strict tolerances. In EDM, electrode machining, fixture replacement, and using multiple electrodes on the same part will cause the problem of accuracy superposition. At the same time, the accuracy of EDM decreases when it is close to a better surface finish. However, milling brings less deviation superposition problem and will not lose accuracy due to good surface finish

when there is a shortage of EDM operators

in many factories, the things that need to be considered in personnel will be better than those related to technology

grobe believes that in addition, there are more things to consider to get the profit strain curve of materials or packaging. Basically, is the machine open? In fact, the impact of programming is another important factor to consider when comparing EDM with milling, or any competitive process. No matter what kind of process, the accurate evaluation of its effectiveness will only come from considering the process comprehensively, not just looking at the machine tool. Only when all the steps before the machine is operated are evaluated to ensure that they are operating with the highest efficiency, the real measurement of the latecomer advantage rate of the potential effect of the machine will be produced