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16-07-2017 #1
Hi guys,
After completing many mods and altering feeds and speeds on my machine to get more reliability.... my first attempt at cutting Carbon fiber has resulted in Y axis stall detect errors.
I just wanted somebody to double check my calculations to make sure my feeds and speeds are in the ballpark
I used the Aman tool 48054B in 1/4 inch size for the purpose of slot clearing, and later 3d Profiling relatively flat profiles.
I counted the number of cutting edges, and input 9 flutes for the calculation, running my watercooled router at full speed ( 24,000 rpm ), to try and get the motors running fast enough for stall detect to operate.
Feed rate was set around 2400 mm/min, and depth of cut for the slot 2mm. There were no Z or X axis movement when the stall occurred, the motors were just in the middle of pushing the bit up the piece.
The manufacturer speeds advertised are
1,600 - 3,200 SFM, and chipload .0024 - .004".... IPR converted to metric chipload & rpmbelow
.0635mm to .1016mm per revolution. At 24,000 rpm. 24,000 x .0635=1524.... or 24,000 x .1016 = 2439 mm/min
Dam, just noticed the operating RPM says 18,000. 18,000x.1016 = 1828, well that explains that then ! FFS
Anyone recommend any other bits for carbon roughing?
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