hi, i am totally new to this and i am trying to help a friend who is programming a cnc lathe. the machine is a puma and the control is a fanuc although not sure which series.

our problem is the machine runs the first part of the G71 roughing cycle fine with good swarf control, but the G71 cycle has a final finish profile and the depth of cut is too small to control the swarf and it wraps around the tool.

we are running at big depths of cut and high feed with roughing inserts to remove stock, and an insert with finishing geometry isnt strong enough to cope

can we increase the depth of cut for the final profile, or better still remove it completely as there is a finishing tool with finish profile chip breaker that goes in afterwards anyway

we were hoping to run the machine unmanned but the swarf gets in the way

can anyone help please

apologies for any mistakes as i am totally new to this forum and programming.

thanks very much