Our company has been given an RFQ for many parts called 'Orifice plates.' They are water-jet cut from 1/8" thick SS sheet. They require various bore sizes which must be +/- 0.001", and also need chamfers on the bore. Flatness, finish, and tolerances are all very important. I'm just looking for some ideas on how to make these cheaply. I'm thinking a turning center would require many different sets of soft pie jaws to prevent the material from bending in when machining the bore.
Just curious if anyone has any suggestions, or knows how other companys make these parts. (They are widely used in the natural gas field, and are made by many suppliers.)
PDF example (handle not required on our parts)
http://www.mac-weld.com/Orifice-Plat...fice-Plate.pdf
Thanks