Source-gated milling arithmetic
Milling Net Cutting Power
Calculate metal-removal rate and theoretical net cutting power using an effective specific cutting force valid for the actual work material, chip thickness and tool geometry.
Theoretical planning values
The factor 60·106 converts N·mm/min to kW. Equivalently, division by 60,000 gives watts. The units must be stated; writing only “/60000” beside a value labelled kW is wrong by a factor of 1000.
Sandvik Coromant metric milling formulas gives Q=apaevf/1000 in cm³/min and Pc=aeapvfkc/(60·10⁶) in kW. Sandvik’s specific-cutting-force guidance explains that kc changes with chip thickness and tool rake; material-group kc1 is a reference, not a universal effective input.
No capacity guarantee: this theoretical net-power estimate omits transient peaks, acceleration, spindle/drive limits, torque-speed envelope, auxiliary loads, tool wear, runout, interrupted-cut dynamics, stability and controller/OEM derating. Verify the selected operation with tool-maker data and the machine manufacturer.
Nikolai Shelkovenko
Nikolai Shelkovenko is a vibration analysis engineer and the founder and CEO of Vibromera. For more than 15 years he has balanced rotating equipment in the field rather than on a test bench: mulchers, industrial fans, crushers, centrifuges, shafts and spindles. That work is what the Balanset instruments grew out of — they were designed as a tool a specialist can carry to the machine and use alone, on site, not as laboratory equipment. Vibromera was founded in 2017 and has been based in Porto, Portugal, since 2023. Development, assembly and support of the Balanset line all happen here. The flagship instrument is the Balanset-1A, a portable analyser for single- and two-plane balancing and for vibration diagnostics. Nikolai is personally involved in customer support, in working through difficult balancing cases and in the development of the software. He works with customers worldwide, in any language.
