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gearcut
05-25-2005, 12:52 AM
hi i have a harbor freight micro mill model47158
dose any one know the type size of the lead screw and lifting screw?
for the y and z axis i also have dails each hash mark=.001 inch is there a way
to calculate the number of steps per unit to get 1 inch of travel in the x or y
axis thanks for any help

anoel
05-25-2005, 10:27 AM
You might want to check out this Yahoo Group... It specifically dicusses conversion of this mill to CNC. (I have one too and this group was very helpfull, everything is pretty much on topic.)

http://groups.yahoo.com/group/hf47158toCNC

gaveljt
02-18-2010, 03:24 PM
You can calculate exact no of steps for a specific distance by using the utility in MACH3. it will also depend whether you are running quarter step, eight step or other resolution. I have MicroMill with all three axis cnc, and they are not the same number for z as the x and y, You will also have to
run them at different speeds, the z being at about 12 IPM and x and y at
something in neighborhood of 18-24 IPM depending on your conversion setup.
I am using an extended table, but the steps for the screws should be the same, if You do not have Mach3, you can still download it in demo mode and run the same part of the program to calculate steps. Email me direct if I can be of any further help/. Jthacher@fairfaxcounty.gov
JT