Method and apparatus for influencing the motion of a movable mem

Details Method and apparatus for influencing the motion of a movable mem Method and apparatus for influencing the motion of a movable mem

1989-05-09

1990-07-10

Schmidt, Frederick R.

Turning

Process of turning

82105, 82117, B23B 300

Patent

active

049399624

ABSTRACT:
In connection with machine tools it is frequently necessary to directly couple the motion sequence of a tool carrier and thus of the tool carried by the tool carrier, to the r.p.m. of a work piece, in order to perform certain motion sequences for each revolution of the work piece. In connection with machine tools in which the r.p.m. of the work piece depends on the work piece diameter, for example, in underfloor wheel set turning machines or turning machines, the r.p.m. is not known. Additionally, the unknown r.p.m. changes during the work piece machining. In order to achieve a synchronization in spite of the changing unknown r.p.m., the time necessary for performing one revolution of the work piece is measured and the time measurement is converted into a control signal for influencing the motion of the movable member such as the tool carrier in such a way that the motion of the tool carrier is influenced as a function of the measured time duration. The time measurement is repeated for each revolution of a substantial proportion of the total time needed for the machining of a work piece.

REFERENCES:
patent: 4399724 (1983-08-01), Dombrowski
patent: 4569115 (1986-02-01), Unno et al.
patent: 4583433 (1986-04-01), Nozawa et al.
patent: 4667546 (1987-05-01), Dombrowski et al.
patent: 4693146 (1987-09-01), Dombrowski et al.
patent: 4821460 (1989-04-01), Wegmann

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