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Calculation of cutting speed, spindle speed and feed rate


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- When the maximum speed of the machine tool spindle is less than the recommended milling condition value...  
  
When the maximum speed of the machine tool spindle is less than the recommended milling condition value, the condition can be adjusted by the following methods.    

Maximum spindle speed Recommended milling spindle speed Rate
Speed Condition
n min-1 ÷ n1 min-1 =
α
Feed for recommended milling conditions Rate True feed
Vf1 mm/min x
α = Vf mm/min


If the spindle speed is n min-1, the feed speed is VF mm / min.

    
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