chipboard cutting with 35k-45k spindles

[mintoska]

Is you're machine capable of cutting at 40m-50m/min? And holding parts down at those speeds? If not, the higher RPM will be of no benefit.

An 18,000 rpm spindle can easily cut at 30m/min with a 3 flute compression bit.

1. Yes. Yaskawa servos 65m/min
2. Yes. 18,5kw vacuum
3. really? We have tested lot of bits. Max speed we have with 3flutes reached was 22m/min by non-laminated 18mm MDF board cutting ( Kyocera 12x22x75 S12x40 Z3 R ).

[Ger21]

When you say "laminated chipboard", what is the laminate? Is it a plastic laminate, or a melamine paper laminate?

Plastic laminate is very abrasive. If you are cutting a lot of plastic laminate, you should probably be using diamond bits. Cheap diamond bits are under $200 US, but should last for 400 sheets or more.

If you are cutting melamine sheets, good quality carbide bits are about $90-$130, and are good for about 100-125 sheets.
But you can get them sharpened about 3 times, for about $25 each. This works out to about $0.25 per sheet over the life of the tool.

If your bits are getting dull quickly, there's a good chance that you just aren't cutting fast enough. Doubling the feedrate will typically double your tool life, if RPM remains the same.

Try something like these:
https://www.onsrud.com/Series/60-100MW.asp
https://www.onsrud.com/Series/60-100MC.asp