Cnc turning machine

摘要: A turning machine is characterized by a new and improved control mechanism for positioning the tool on head. CNC issues command signals selectively These are developed from an encoder which provides instantaneous position of rotating part being turned program in containing information about part. closed loop system receives these converts same into current linear motor prime mover controlling The operates carriage head cutting mounts opposite connection to carriage. hollow bar guided sets rollers cooperatively arranged provide yieldably forceful constraint bar. rolling action low friction, inertia construction enabling rapid response commands. also contains various sensors providing velocity feedback use control. circuit components organized fast faithful signals. has ability accurately turn complex parts where rapidly updated, often tens kilohertz frequency range. Different can be merely changing program. questions raised reexamination request No. 90/001,657, filed Dec. 1, 1988, have been considered results thereof reflected this reissue patent constitutes certificate required 35 U.S.C. 307 as provided 37 CFR 1.570(e).