Gallery, Projects and General > How to's

Climb milling

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bogstandard:
It seems that a few members don't fully understand climb milling.

Unless you are fully conversant with the dangers of climb milling, it can easily become a major safety issue, with bits of metal and tooling flying in all directions.

My advice is that if you don't need to do it, then don't, but if there is no other way, then only takes very small cuts and do it with a slow feed with the gibs tightened up.

As they say about a picture, I hope the one at the bottom explains it all.

John

John-Som:
I remember struggling to get a grasp of the difference between standard milling and climb milling. In my case I now relate it to shovelling coal (or snow if you live in Alaska). In other words you scoop it along the ground then lift rather than hacking in from the top - well the analogy works for me !

JohnS

Divided he ad:
I lost count of the shattered cutters I went through when i first got my mill'   :bugeye:  :doh: 


I was pointed in the right direction by Boggie and all has been pretty good since then.....  :dremel:



Hi Mr S :wave:

Coal!! Snow!!.... I'd rater not shovel either :lol:  .... But the analogy works for me  :thumbup:




Ralph.

usn ret:
I have a Tiawanese mill made in the early 70s' which has been converted to XY CNC with recirculating ball lead screws.  When I first got the mill to do a climbing cut was taking your life in your onw hands. With the recirculating ball lead screws climbing cuts give me an execellent  finish without jerky grabbing feeds. It loads the cutter differently than standard feed.  The recirc ball takes all looseness from feeding.  The one I have to watch is the rate of feed which is controllable using the power feed. It works ok for me. My  $$$.02  :thumbup:
Cliff

bogstandard:
You are quite right Cliff.

Climb milling does give much superior finishes, and in industrial machines, they have anti backlash nuts like you have, so that manual machines can take advantage of it. CNC machines usually have ball screws as standard.

I suppose with a bit of research, thought and work, most of our machines that we use could be fitted with them, at a price.


John

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