To get rid of vibrations in contouring, it is conventional to reduce the axial engagement.
• Low axial engagement reduces the risk of chatter (spontaneous vibrations)
,but generates an interrupted cut, which creates vibrations (so-called « forced »)
• Higher axial engagement increases the risk of chatter, but make the cut more continuous.
For each tool, there is an optimum axial engagement
that lead to perfectly continuous cut.
To reduce the vibrations, simply take an axial engagement equal to the axial pitch
of the tool. (or a multiple)