Hello,
I'm running a Mitsubishi FA20S. My issue is being able to hold a .0005" tolerance in the concentricity of the part.
My material is very stable (DC-53 with 3 draws). I'm cutting a gear style part out of a 3.000" thick block. I'm having problems holding the concentricity between the O.D. and I.D.
In addition to the part there are 10 smaller I.D. holes being cut out of the ring between the ID and OD. My process is to rough cut everything first starting with ID cuts threw the OD cuts, then skim cut everything the same way.
My inspection shows that I fall out of tolerance for concentricity in the direction of the inner ID holes in the ring. The ID and OD cut sizes are correct, just concentricity is out.
Some suggestions have been to offset my Geometry in the direction of the problem. Feel I shouldn't have to do that, do to, sometimes running different thicknesses and the amount of out-of-tolerance changes.
Just had "X" Ball screw repaired(not new, serviced by ball screw company)("Y" no problems) and a full Preventive Maintenance completed.
Looking for advice; Machine ware - Mechanical check or replace - Software - Parameters - ???
Bruce
I'm running a Mitsubishi FA20S. My issue is being able to hold a .0005" tolerance in the concentricity of the part.
My material is very stable (DC-53 with 3 draws). I'm cutting a gear style part out of a 3.000" thick block. I'm having problems holding the concentricity between the O.D. and I.D.
In addition to the part there are 10 smaller I.D. holes being cut out of the ring between the ID and OD. My process is to rough cut everything first starting with ID cuts threw the OD cuts, then skim cut everything the same way.
My inspection shows that I fall out of tolerance for concentricity in the direction of the inner ID holes in the ring. The ID and OD cut sizes are correct, just concentricity is out.
Some suggestions have been to offset my Geometry in the direction of the problem. Feel I shouldn't have to do that, do to, sometimes running different thicknesses and the amount of out-of-tolerance changes.
Just had "X" Ball screw repaired(not new, serviced by ball screw company)("Y" no problems) and a full Preventive Maintenance completed.
Looking for advice; Machine ware - Mechanical check or replace - Software - Parameters - ???
Bruce