On Fri, 21 Jun 2019 08:55:14 -0700, "Bob La Londe"
wrote:



wrote in message
...

I am trying to help a guy who is opening a machine shop. Which is kind of
comical since I have no experience in commercial machining.

He has a job machining peek plastic. And has a problem with long strings of
the plastic jamming the chip conveyor. Now I am a novice but do know
enough when confronted with a problem the first thing to do is find out what
others have done. So how do you deal with strings of plastic?

When manual machining plastics I just pause feeding te avoid having one
long chip. But maybe there is a better way. This is being done on a cnc
turning center.

Dan

************

Never having used a real turning center my feedback may be moot, but what I
have done on the manual lathe is make sure my cutter is very sharp, cranked
up the RPM and placed a garbage can where the arc of the chip shooting out
into space is piling up.

My biggest issue with plastic on the lathe otherwise was it getting into my
chuck and gumming it up. Had to take it all apart. Not just pull the jaws.

Ayup. One of the best ways.

Also investigate a razor blade to be used as a chip "breaker"
(cutter). If you can cut the curls before they wrap around the
machine and suck you into the rapidly spinning jaws..you are money
ahead. Ive seen die grinders used in a fixture to chop plastic chips
into pieces as they are coming off the work. Instead of a stone..they
were using a series of blades in a custom holder operated by the die
grinder.
Ill see if I have any pictures.

__

"Poor widdle Wudy...mentally ill, lies constantly, doesnt know who he is, or even what gender "he" is.

No more pathetic creature has ever walked the earth. But...he is locked into a mental hospital for the safety of the public.

Which is a very good thing."

Asun rauhassa, valmistaudun sotaan.


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus