Hello All,
In the early stages of converting a 13 x 24 inch manual Chinese
lathe to run with Linux CNC.
I have 2 questions regarding replacing the Z axis lead screw with a 3205
ball screw:
What I am thinking is mounting the fixed end in a pillow block at the
head stock end of the lathe and the floating end in a second pillow
block at the tail stock end of the bed. The question I have is there any
reason I shouldn't drive the ball screw from the floating end? My logic
for driving at the floating (tali stock) end is 1 I have more room for
belt reduction at this end and 2 with the fixed end of the ball screw
at the head stock end is that the ball screw will be in tension when it
is pulling the carriage toward the head stock during cutting and less
likely to flex or bend.
The second question I have is what would be a realistic cutting speed
range for the ball screw in RPM? The servo motor I am using has a top
speed of 3000rpm and I am trying to figure out reduction ratio that is
realistic.
Thanks in advance for any help or suggestions.
Linden
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