Thread Milling Axial Depth of Cut: Optimizing Tool Life in HRC62 Steel
Last month, we troubleshot a recurring failure on a 5-axis vertical machining center at a Tier-1 automotive mold shop in Michigan. The setup was milling M5 internal threads in vacuum heat-treated D2 tool steel at HRC62. By the eighth hole, the tool tips suffered catastrophic fracture. The shop engineer had lowered the cutting speed (Vc)
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