When machining in lathes turning centres or multi-task machines calculating the correct values for. Feeds and speeds formula. Lfn021000200mmmin Substitute the answer above into the formula.
Production in kgs 8 hrs.
The preferred speed is determined by working backward from the desired cutting speed SFM or mmin which may be defined as the rate at the workpiece surface and. 1 SFM equals 000508 ms meter per second the SI unit of speed. Formula Cutting Speed V pDN1000 mmin Where DDiameter of Workpiece in meter or millimeter NSpindle Speed in rpm Spindle speed edit This section needs additional citations for verification. Cutting speed CS X 4 Diameter of cutter D This simplified version of the RPM formula is the most common formula used in machine shops.