- Feeds ans Rates on CNC with DSP controller
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Feeds ans Rates on CNC with DSP controller
hallo guys ,
i am new in cnc world about 1 month
i have cnc machine with dsp controller , trying cutting albond , acrylic and pvc..
i have problems with acrylic (mostly 3mm thickness ) cutting . F.E. i have 4mm 1 flute end mill , i set 12500 rpm and 765 feed rate in vectric aspire , everything works fine with almond and pvc .
but when i start cutting acrylic problems starts , if give to low workspeed from DSP controller it becomes gummy if high it brokes if something middle it jumping )))
can anyone help me how solve this problem . i cant find anywhere what work speeds i should write in dsp
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Re: Feeds ans Rates on CNC with DSP controller
For acrylic:
First: Use a cutter designed for it (single flute steep spiral) and run a single DoC at 20000-24000 RPM and about 1200 to 1500 mm/minute. Set the cut and RPM speeds in your G-Code and use the DSP speed reductions to find a good balance (between 60 to 90% works well for me).
Second: Try a single flute router bit (not end-mill) at about 12000-16000 RPM at about 900 to 1200 mm/min. Taking two passes at about 90% DoC then the final 10% helps clear the mess.
In both cases a compressed air stream into the cut makes a huge difference to cut and clean-up quality.
To help avoid the jumping up, try a down-cut cutter but you will really need the air blast to help clear the chips. Alternately, use a vacuum or some other hold-down method such as double-sided tape.
Other folks probably have some better ideas :-)
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Member
Re: Feeds ans Rates on CNC with DSP controller
thank you for ur time its very helpful for me
- Feeds ans Rates on CNC with DSP controller
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