Thread machining control method and apparatus therefor

Details Thread machining control method and apparatus therefor Thread machining control method and apparatus therefor

2005-01-25

2005-01-25

Picard, Leo (Department: 2125)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C700S193000, C318S571000

Reexamination Certificate

active

06847857

ABSTRACT:
It is strongly demanded that a stable thread machining process be attained by carrying out a thread machining operation while varying the rotational frequency of a spindle, and thereby restraining the occurrence of cutting chatter. According to the present invention, in which a thread machining process is carried out on the basis of a rotation of the spindle and a movement of a feed axis, the above-mentioned demand is met by executing the steps of determining a relative phase error of the spindle positions and feed axis during a thread machining operation, and determining a movement quantity of the feed axis on the basis of a pseudo spindle position set by error-compensating the quantity of the relative phase error with respect to the spindle position.

REFERENCES:
patent: 4873793 (1989-10-01), Asano et al.
patent: 4902951 (1990-02-01), Ohta et al.
patent: 5910199 (1999-06-01), Busick et al.
patent: 6111382 (2000-08-01), Tsutsui
patent: 6147468 (2000-11-01), Hamamura et al.
patent: 49-105277 (1974-10-01), None
patent: 2000-126991 (2000-05-01), None

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