5-Axis Machining
5-axis machining refers to CNC machining operations where the cutting tool can move along three linear axes (X, Y, Z) and simultaneously rotate around two rotary axes (typically A and B, or A and C). 5-axis capability allows machining of complex, undercut, and contoured geometries in a single setup that would otherwise require multiple setups or specialized fixturing on 3-axis machines. Applications include aerospace structural components, turbine blades and blisks, impellers, complex molds, and medical implants.
Why it matters
5-axis machining capability — both in the machine and in the CAM software — is the primary selection criterion for shops serving aerospace, defense, energy, and high-precision medical markets. CAM software for 5-axis work requires specialized multi-axis toolpath strategies, advanced collision avoidance, and machine simulation that accounts for the rotary kinematics of the specific machine. Not all CAM platforms are equally capable at 5-axis; hyperMILL, NX CAM, and PowerMill are consistently the strongest in this category.
External References
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Cite this definition
Finocchiaro, Michael. “5-Axis Machining.” DemystifyingPLM PLM Glossary, 2026, https://www.demystifyingplm.com/glossary/5-axis-machining