Alain,
It looks like you are doing 'constant load' threading.
The constant load cycle reduces the depth of cut as the thread gets deeper, so I guess 0.005 is not a good place to start unless you can specify a minimum depth of cut. Looking at the Haas Lathe manual, it appears that there is a way to do this.
There is also a way to change the infeed angle as CNCBoss has suggested.
Based on your photos, I would definitely want to have that live center go deeper into the part - i.e. a bigger center hole.
It looks like you are using a 'top-notch' style insert, so there should not be any helix angle issues the way there are for 'lay-down' inserts.
I wish I knew the details on the Hass threading cycles better, but I don't. Sorry. |