Turning – Severing or cut-off – Interrelated means for tool infeed and circumrotation
Patent
1973-10-09
1976-02-03
Hinson, Harrison L.
Turning
Severing or cut-off
Interrelated means for tool infeed and circumrotation
82 14D, 82 38R, 90 135, B23B 2100, B23B 328, B23C 116
Patent
active
039357660
ABSTRACT:
A cylindrical tube having eccentric inner and outer cylindrical surfaces is rotated in a lathe about the axis of its outer cylindrical surface. The thickness of the tube at a relatively small spot is measured by an ultrasonic thickness gauge whose sensing portion is moved relatively slowly along the length of the tube as it rotates to cover substantially the entire surface of the tube along a helical measurement path. A tool bit is mounted adjacent to the sensing portion of the ultrasonic thickness gauge for machining the tube as it rotates. The tool bit is moved toward and away from the center of the tube by a feed screw which is driven by a servo motor. The servo motor is controlled in accordance with the output of the thickness gauge to control the depth of the cut made by the tool bit in direct proportion to the measured thickness of the tube wall adjacent to the tool bit, thereby reducing the eccentricity of the tube. An anti-gouge circuit automatically reduces the movement of the tool bit toward the tube when the measured thickness of the tube wall rises above a predetermined maximum thickness value.
REFERENCES:
patent: 2681595 (1954-06-01), LeCompte
patent: 2927258 (1960-03-01), Lippel
patent: 3269233 (1966-08-01), Lothmann
patent: 3280674 (1966-10-01), Sirola
patent: 3483795 (1969-12-01), Wranowsky
patent: 3561301 (1971-02-01), Sharp et al.
patent: 3623216 (1971-11-01), Aihara et al.
patent: 3704641 (1972-12-01), Rhoades
patent: 3834256 (1974-09-01), Abbatiello et al.
Fuller Henry C.
Hinson Harrison L.
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