公开(公告)号：WO1990014192A1

公开(公告)日：1990-11-29

申请号：PCT/JP1990000603

申请日：1990-05-11

Applicant: FANUC LTD ,  KAKU, Masahiro ,  KONO, Shinichi ,  FUKUKURA, Masaaki

Inventor： FANUC LTD

IPC: B23G01/16

CPC classification number: B23G1/18 ,  G05B19/186 ,  G05B2219/45216 ,  Y10T29/5114 ,  Y10T408/165 ,  Y10T408/17

Abstract: This invention relates to a control device that can drive a compound lathe capable of tapping on the edge surface of a rotating work. This control device (100) is provided with first and second control circuits (110, 120) that control the rotation of first and second main shafts (10, 20) respectively loaded with a work (60) and a tapper (70). When tapping is to be started, after performing control of position loop according to the deviation (ε) between the position feedback signals (PCC1, PCC2) relating to each of both main shafts and controlling the rotations of both main shafts to the same speed, the second control circuit rotates the second main shaft faster than the first main shaft by a tapping speed according to the deviation (ε) between the sum of the tapping speed command (Vc) and the feedback signal (PCC1) from a high order control device (40) and the feedback signal (PCC2), as well as moves the second main shaft in the shaft direction at a speed determined according to the tapping speed and the tapping pitch, and performs the tapping on the edge surface of the rotating work. After the tapping is finished, the second main shaft is reversely rotated and moved backward to separate the tapper from the work.