公开(公告)号：US3453549A

公开(公告)日：1969-07-01

申请号：US3453549D

申请日：1966-06-24

Applicant: STEWART WARNER CORP

Inventor： PAYNE ROBERT A ,  MOLEN JOHN F VAN DER

IPC: G05B19/23 ,  H03K17/00 ,  H03K17/26 ,  H03K17/28

CPC classification number: G05B19/238 ,  G05B2219/34184

公开(公告)号：US3665280A

公开(公告)日：1972-05-23

申请号：US3665280D

申请日：1969-08-22

Applicant: STEWART WARNER CORP

Inventor： PAYNE ROBERT A ,  MOLEN JOHN F VAN DER

IPC: G05B19/23 ,  G05B19/24

CPC classification number: G05B19/23 ,  G05B2219/34186 ,  G05B2219/35436 ,  G05B2219/35537 ,  G05B2219/36152 ,  G05B2219/36366 ,  G05B2219/36579 ,  G05B2219/37175 ,  G05B2219/43183 ,  G05B2219/50019 ,  G05B2219/50334 ,  Y10T409/300896

Abstract: A numerical control system for machine tools or the like such as milling machines is disclosed which directs movement by absolute measurement from a reference zero. Programmed data relating to a desired absolute position of the reference zero is entered into a command register, the contents of which is compared bit by bit with data relating to the absolute actual position of the machine tool entered into a position register. The programmed dimension data relates to the actual size of the desired workpiece as provisions are made for entering data relating to tool size offset by means other than the program. A complete system is disclosed including the logic which synchronizes the input of the machine tool actual position with the command position data entered into the system from the programmer as well as the means for controlling the feed speed of the machine tool responsive to programmed data.