Patent Number: 6,167,325

Title: CNC data correction method

Abstract: Actual machining positions P1, P2, . . . corresponding to command positions S1, S2, S3 . . . of each block of NC data are obtained by trial machining. Positions that correspond symmetrically to the actual machining positions P1, P2, . . . with respect to the command positions S1, S2, S3 . . . of each block are obtained. Modified NC data are created with use of the symmetrical positions as modified command positions for each block. The modified NC data include correction values for modifying positional differences attributable to a delay in a servo system. Therefore, if machining is carried out in accordance with the modified NC data, the correction values and a follow-up delay attributable to the actual delay in the servo system cancel one another, so that a high-accuracy work shape can be obtained.

Inventors: Kamiguchi; Masao (Minamitsuru-gun, JP), Maekawa; Susumu (Oshino-mura, JP)

Assignee: Fanuc Ltd.

International Classification: G05B 19/41 (20060101); G05B 19/4103 (20060101); G05B 19/414 (20060101); G05B 19/4155 (20060101); G06F 019/00 (); G05B 019/42 ()

Expiration Date: 12/26/2017