CNC Grinding and Wire-Cut EDM are both machining methods for mold components, especially for stamping die components. Of course, 5-axis/3-axis CNC machining also can be used for making the tool and die components.
But compare with the quality of different machining methods, EDM (including wire EDM and sink EMD) is better than CNC machining; CNC Grinding is better than EDM.
To be specific, in the precision tolerances, Grinding is doing better than EMD, and EMD is doing better than CNC machining.
In the Surface roughness and surface evenness, Grinding is also doing better than EMD, and EMD is also doing better than CNC machining in some places.
According to the speeds, CNC machining is a fast way for machining, EDM needs a longer time than CNC, and Grinding needs a longer time than EDM. But fast doesn’t mean the quality. In some respects, Slower Grinding is better than EDM and CNC.
Maybe Grinding is the best mechanical machining method for ultra-precision components in steel, HSS, or Carbide.
And there are various kinds of CNC grinding, surface grinding, profile grinding, cylindrical grinding, centerless grinding, internal and external circular grinding, etc.
The best quality of grinding is high precision and excellent surface roughness. grinding can get better tolerance as we know. Grinding also can get very good mirror effect surface roughness. This is some of stamping tools and mold end-user needed.
Grinding is also very suitable for the machining of carbide punches and carbide die inserts for stamping tools. As these stamping die components are mostly are straight and Flat shape that are very suitable to use Grinding machining. such as profile grinding, surface grinding, and jig grinding, etc.
We just need to know that CNC grinding is the basic and best machining method, and grinding parts quality is better than EDM and CNC machining(milling and turning).
Welcome to contact us at +86-15338374626 sales@langdi-precision.com for more details.