I know this question has been asked many times, and that every machine is different.
My question is, when I purchase an endmill. Most speeds/feeds are very high, even for small cnc’s and hobby cnc’s.
An example is for the v1e 1/8” 2F downcut I’m getting recommendations of 12mm/s, 10-16K rpm, plunge of 3-6mms. Now this is pretty much the safe zone for that as advised.
Now if I purchase the same equivalent endmill locally,
Their recommendations are 33mm/s, 24000rpm, plunge of 3.6mm/s for use on a SharpCNC.
Such a big difference in their feeds/speeds.
I’m guessing this is because either the lowrider speeds can’t travel this fast and rigidness, which is fine.
But how do I go about using these high parameters and making them work on my machine without actually trying it. Like is there a rule to start off with based on endmill parameters.
How does everyone work out their starting feeds/speeds when they first get an endmill and are given parameters for the endmill bit?
Like I’m at a stage (mind you I’m new to this game). That when I purchase endmills, i have the recommended feeds/speeds, but they seem way off the charts that my machine can handle, so I’m basically just guessing figures until it sounds right.
Everyone says I should only be using 10-16k rpm max. But yet other similar machines are using 24k rpm for same endmills.
So what I’m asking is, is there some formula or rules that we apply to make feeds/speeds work or be in the correct ball park.
Eg. 2Flutes should have half the rpm of a 1flute endmill.
Need advise sorry for the novel lol but I’m sure this will help a lot of newbies like myself
So im using a 1.5k spindle, so compared to other similar cnc’s the only thing I can see that’s holding me back is ridgedness(other cnc’s using aluminium profiles, compared to lowrider using pole/strut/3Dprinted parts) and the controller is limiting speeds… is this correct?
What are the max speeds for X,Y,Z axis for this machine (I forgot)?
I’m taking 6.25 mm DOC in 12mm plywood at 22mm/s with no problems at all. First thing is when you slow the RPMs down on the bit you can slow down the feed rate and get the same chip size. I run a 1.5kw spindle as well and it spends 90% of its life at 12,000 rpm. I can go deeper/faster with my machine but there isn’t a need to. I know at this speed/depth I’m making good chips and I don’t have to worry about skipping steps.
As you can see from my last picture post, it seems to have a problem with Android 8.1.0, it looks like it is going to load ok but on the final opening screen everything is compressed into the top of the display and is un-responsive.
sorry for the novel lol but I’m sure this will help a lot of newbies like myself
