Hi everyone ,
I would like to ask a help.
I run cnc lathe deawoo 400 ,i have problem tapper on backside .let me explain first.
**after heat treat they run first side ok. OD : 9.00 inches lenght 0.5 inch, ID 4.5 inches bore ID length 0.15 inch
i check flatness under 0.002 ,tapper go to center the part -.002 .(they are still in print)
** Before i run next operation lathe I measure
OD 9.00 inches Over all Length 0.5 inch
Counterbore Diameter 8.770 inch Depth 0.35 inch
ID 4.5 inch Length 0.15 inch
**This operation I chuck on OD 9.00 inch
**I Cut counterbore Diameter 8.8 depth 0.400 inch
after run through program .I check flatness is fine but the problem is on backside seat on the jaw (more tapper from -.002 to up -.009).
any body help me .Thanks
I check chuck pressure minimum
I indicate jaw is flat