parting ali help

[hpe]

i have a cyclone with a toe80 toolchanger .its all working mach 3.
i have a 3mm hss parting tool (ill buy different if advised)

i am struggling to part 25mm aluminium with it .

its snatching grabbing sounds terrible vibrates .
i can see the tool lifting a bit.

if something is loose or worn i will fix it,
But i need a base to start with
with this machine and tool what rpm and feed per rev do owners of this machine use for parting 25mm aluminium

cheers

[Martin]

Aluminium is difficult to part off without coolant.

We use Free Chipping Aluminium grade 2011 T3 without coolant.

With the following Feeds/Speeds.


Feed Rate/Min = 120
Feed Rate/rev = 0.07
Spindle Speed (RPM) = 1800
Spindle Speed (CSS) = 135

[hpe]

thanks

So with these settings i should be in the ball park?
Regarding the parting tool lifting , does this suggest faulty turret with too much play or to be expected if settings are way out ?
thanks

[SimonRafferty]

I would say it lifting implies the turret is not properly locked.

I would go through your tool change logic again.

You can buy alternative parting tips which work well on most Alumimium. They have a sort of M shaped profile rather than a flat tip. I'll find the part number when I'm at the shop next.