Climb vs. Conventional Cutting: Which is Superior?

Machinist discusses the differences between Climb and Conventional Cutting on CNC Mills

#engineering #cncmachine #machining

[adama]

I guess I should state that climb milling is for very rigid setups and will not work well on stuff obtainable by hobbyists.

[MKul-fu]

I was a machinist for 42 years. Rough conventional, finish climbing. We also didn't have ball screws. Big difference!

[tktspeed]

climb for cnc, conventional for manual because of backlash. I found that I tend to get better finish with conventional milling with manual mills.

[phuckyocouch]

My boss says fuck the work piece save time.

[FranklyNorman]

My tool definitely doesn't last as long when it's getting a lot of rubbing. It's ok though, because I finish deep.

[NTHlNG--C-HR]

I’m in the Stone industry so the way I do this is I climb cut with all the segmented bits that are cutting material and then the bits that come after that are grinding or polishing the edge I do those conventional cut. Water coolant is being supplied.

[richardzepeda]

I seriously have no idea why the algorithm put this video in front of me.
Then I heard the sage words, "when your tool is rubbing, your tool isn't going to last as long." 😂

[JAT]

If you have ever used a handheld router, you can tell the difference really easy. You gotta be real careful when climbing cutting as it will rip the router right out of your hands

[Dbone]

The only thing I have to add is in manual milling without power feed. During these conditions climb milling isn't recommended as the cutter can pull the table into the cutter too fast, causing your cutter to grab and break.

[loganlawlyes]

Climb is good but if there is backlash in the system the cut might jump or "climb" past your target. Conventional cutting has thoes drawbacks but you don't have to worry about backlash. Both are used it's all about what you have to do

[hikolanikola]

Depends on what you are cutting...
For example we used to mill parts that were previously cut in shape by plasma, and the hardened material and scale used to destroy endmils in conventional milling, but climd cut did a much better job because it did not run in to hardened material and scale, instead it went in to pure steel.

[CNCMatrix]

They both have their place, even on modern CNC's. I still use conventional to this day. I've found that indexable end mills last a lot longer conventional milling in forgings with a lot of nasty scaling and with long solid carbide end mills on extremely light finish cuts on parts that require a tight tolerance on both size and straightness/parallelism in tougher material like hardend steel/tool steels.

[Gottenhimfella]

Heat does not cause work hardening.
Rubbing causes plastic deformation aka work hardening, which in turn causes heat.

[josephmorse]

All setups should be rigid. I only use conventional milling on manual machines. Too much slippage with acme threads. It's worth mentioning that helical end mills are specifically designed for climb milling.

[LAZARUSLNG]

Depends what you’re cutting. The reason they both have names, is that they’re both legit, and are just appropriate for different jobs.

[Steve-xrew]

Climb milling is not good if your machine is not rigid and has conventional screws with clearance. Ball screws are much better, no clearance. Exact movement.

[chansonducygne]

odd no mention of the force vector being aligned with the cut in conventional, vs perpendicular in climb (ok for finishing but not roughing)

[bpd]

On a CNC, I nearly always use climb milling. On a manual, conventional except for finish passes. As climb pulls the tool into the part, conventional you push the tool into the part and so you have easier control.

[TwojTata]

I cut mostly pvc foam at my work (for custom inserts) and climb totally messes it up. Only conventional for us. I wonder why it's so different with the foam. The difference is huge. Climb just rips it and conventional pass smoothes it

[MoistTowelettes-rgil]

I used conventional milling on a titanium part as there was a piece of foil that would cause the cutter to ride up on it and destroy it climb milling. My programmer used conventional so that the foil gets kicked out In front instead of riding under the cutter