[Bill]

I am getting ready to set-up a job that will be cut with a 1/32 4flute carbide endmill, total depth .05. I am running a HAAS MINI MILL. What is a good starting point for speed & feed, the material is in soft state.
Thanks, Bill Johansen

PS as you can tell I bounce from job to job, so had to break down the set-up for reamer testing!

[hardmill]

Whats top end on your spindle?
How good are you holders?
What type of toolpath are you using?
Cool that will get us started.

PEACE

[Bill]

5000 rpm
holders good shape, if i have will buy new
.tap file from bobcad v15 and hand programming

Thanks, Bill Johansen

[hardmill]

Max out your spnidle thats for sure, even @ 5000rpm
Thats only about 40sfm.
With a .0005 ipt your looking at 10ipm.
I'd go for .003-.005 step over or d.o.c.

Also in the future i'd steer clear of the 4 flute tools.
Look at robbjacks 2 flute (TiAln) coated tool they're
geared for just such applications.

PEACE

[Bill]

Hardmill thanks for the info, I was not even close my depth was .010, step over .010, rpm 2500 & feed 2.0 ipm. I will give it a try in the morning.
Thanks again, Bill Johansen

[hardmill]

What does the geom. look like that your cutting.
I'm assuming its pretty small.

PEACE

[Bill]

Hardmill the part is1/2 square by 1 long it is used for insertion of terminals, there are 3 irregular shaped islands. Also we have Solidworks & are loking at Camworks, the engineers have the say so for the software, they say need something that runs in Solidworks.
Thanks, Bill Johansen