NC milling programming of plastic mould core based on UG
The structure of the mould core was analyzed first,and distinguished moulding surface,parting level,flow channel,ejector pin hole,inclined ejector hole,positioning convex.In order to design a reasonable cutting path,the ejector pin hole,inclined ejector hole and other holes that do not need to be cut by CNC milling machine were blocked.According to the core structure,the rough cutting path was written by cavity milling command,the residual cutting path was written by residual milling command,and the semi-finishing command was written by equi-height milling command.When writing roughing and semi-finishing cutting paths,various structures could be mixed together to program,but when writing finishing cutting paths,different finishing cutting paths should be written for different structures.For surfaces,parallel milling paths should be writ-ten,for bevel surface,equal height cutting tool path should be written,for the small round corner of the root,root cleaning tool path should be written,for the flow path,the forming tool to cut re-ciprocally according to the contour path was used.
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