Video: 3+2 Mold Machining at Eifel
A maker of injection molds for high-appearance-quality parts describes the machine tool, software and strategy this shop uses to apply 3+2 machining.
Rick Hecker, Gary Schulz and Michael Nye of Eifel Mold & Engineering in Fraser, Michigan describe the shop's use of 3+2 machining to mill injection molds. The shop uses PowerMill software from Delcam to program a five-axis machining center from Hermle. One of the shop's specialties is mold tooling related to automotive steering wheels, an example of which is shown in the video.
Accessible control features play an expanding role in mold machining.
Edge preparation involves removing material from a cutting tool in order to extend its life. That may sound counterintuitive, but a maker of glass molds says edge prep has dramatically reduced the amount it spends on tools.
Hard milling allows mold components to be machined in the hardened state, thus skipping several expensive and time-consuming processes such as electrical discharge machining and hand polishing.