relatively high speed of course
this piece was cut out of a 1/2" thick 6061-T6511 plate.
this is the biggest (X/Y) aluminum part I have ever made on the sherline and required me to adjust the gibs and backlash before hand so I could use as much travel as possible. i finished the surface of the fixture plate beforehand, and it measured 6.05" by 3.65"! i think there might even be a bit more travel than that!
i ran this at 18ipm, 0.1" depth, full speed using the 10k rpm pulley. plunging at 1ipm.
the end mill for roughing was a 3 flute stub length 1/4" diameter roughing endmill from a canadian ebay seller for about $20 shipped
the finish endmill was a standard 2 flute carbide square end mill, and also ran at 18ipm, but at 0.020" radial engagement and a spiral down
the toolpath took 23 minutes including 1 manual tool change and rezero. this includes roughing and finishing the inner bore profile and outer profile, and the two larger holes. the two smallest holes i just did on the drill press (just didnt feel like making another manual tool change since i'd have to use 1 3/16" for them)
and this isnt even as fast as you could go! i could have upped it to 0.125" but it was hot and im not sure if the motor would overheat or not and i wanted this part done..
the motor got up to about 130F surface temperature inside the enclosure with no airflow..i should really turn the fan it has on but i couldnt find the wall wart for it
im very happy with how this part turned out!
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this piece was cut out of a 1/2" thick 6061-T6511 plate.
this is the biggest (X/Y) aluminum part I have ever made on the sherline and required me to adjust the gibs and backlash before hand so I could use as much travel as possible. i finished the surface of the fixture plate beforehand, and it measured 6.05" by 3.65"! i think there might even be a bit more travel than that!
i ran this at 18ipm, 0.1" depth, full speed using the 10k rpm pulley. plunging at 1ipm.
the end mill for roughing was a 3 flute stub length 1/4" diameter roughing endmill from a canadian ebay seller for about $20 shipped
the finish endmill was a standard 2 flute carbide square end mill, and also ran at 18ipm, but at 0.020" radial engagement and a spiral down
the toolpath took 23 minutes including 1 manual tool change and rezero. this includes roughing and finishing the inner bore profile and outer profile, and the two larger holes. the two smallest holes i just did on the drill press (just didnt feel like making another manual tool change since i'd have to use 1 3/16" for them)
and this isnt even as fast as you could go! i could have upped it to 0.125" but it was hot and im not sure if the motor would overheat or not and i wanted this part done..
the motor got up to about 130F surface temperature inside the enclosure with no airflow..i should really turn the fan it has on but i couldnt find the wall wart for it
im very happy with how this part turned out!
