Video: Trochoidal Milling

Videos From: Modern Machine Shop

Posted on: 8/22/2008

This approach to rough milling replaces straight lines with “curlicue” moves of constant radius.

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This is an approach to rough milling in which straight lines are replaced by “curlicue” circular moves of constant radius. Potential benefits include:

  • Faster metal removal. Making the constant circular curve the only direction change allows a high feed rate to be consistently maintained.
  • Longer tool life. The cutting edge is in contact with the material through only about 5% of the cutter’s revolution vs. up to 50% for more conventional cutting. Cooling of the tool is improved.
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