dachopper
16-07-2017, 12:34 PM
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?
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?