Have a problem on my job, milling a flange that are cut in half, so i milling a arc, and drill som holes. and then they put that pieces togheter and its going
to be a nice round hole there. but it aint,.. in one side the measure is 414 , (CORRECT MEASUREMENT) and in other axis it is 412.7 (WRONG)
but the measurement is good between all holes.
i have drawed a quick pic how i mean..
It milling with a 63mm milling tool with i think 12 plates.. the job is 35mm height, i put in some lines from prog.
Re: Need help, milling flange thats not get round..
A couple things could be going on. One is back lash in the machine. The other cause may be the part spread open with all that material removed and heat from the plasma. What i would do is drill the holes first. Then screw through the holes to a fixture plate. Then cut the outside. If it is still off then check for back lash and make sure you are actually measuring to the center of the arc correctly.