Precision mold manufacturing - electrical processing
Precision mold manufacturing without discharge processing, high value-added mold edm machining process each link all has close relationship with the machining accuracy, grasp every detail in the process of, according to a set of precision machining of professional technology, to achieve the high precision requirement greatly the development of mold industry in recent years, more and more is also high to the requirement of precision molds.High value added molds such as micro connectors, IC plastic sealing molds, LED molds have become very popular in the market mold varieties.Although the technology of high speed milling for fine machining of molds is improving constantly, the fine part of high value-added moulds by electrical discharge machining always occupies the main position in machining.
The core of precision edm is size accuracy, profile accuracy and surface quality.
The processing size should be strictly joined, and should reach + + 2-3 + m.
The copying precision requires sharp edges and angles, and the R value of the corner at the bottom should be as small as possible (generally, the R value should be less than 0.02mm).
The depth error from the edge to the center is within 2 PI.
If the surface quality requires a uniform surface roughness, Ra should be less than 0.4sliding m (VDI12), or the surface should be machined with mirror surface.
The edge of discharge inlet and opening Angle is complete, and the blasting edge value under microscopic examination shall not be greater than 0.015mm.
There are many factors affecting edm precision.In the mechanism of edm, there are discharge gaps in the discharge process, unavoidable electrode loss, and poor chip removal efficiency in finish machining, which are the difficulties in precision edm precision control.
In actual machining, machining accuracy is affected by multiple links.Only by mastering the essence of machining technology, strictly controlling all links in machining and constantly accumulating processing experience can high success rate be guaranteed.