Apparatus for rotating a generally cylindrical heavy workpiece f

Details Apparatus for rotating a generally cylindrical heavy workpiece f Apparatus for rotating a generally cylindrical heavy workpiece f

1984-02-06

1985-09-10

Envall, Jr., Roy N.

Electric heating

Metal heating

Work holders

82 38R, 219 60R, 219 7614, B23K 9225

Patent

active

045408726

ABSTRACT:
A large generally cylindrical workpiece is supported for rotation and driven by a set of axially spaced floor supported units each including a pair of parallel spaced cradle rolls. The cradle rolls of each unit are supported by a surrounding frame, and a pair of trunnions support each frame and cradle rolls for tilting movement on a transverse axis. Each unit also has a set of power operated screw jacks which precisely position the cradle rolls at a selected elevation, and the cradle rolls of one unit have resilient outer surfaces and are driven by an endless chain drive system. The cradle rolls of another unit are positioned within a cooling liquid to prevent overheating of the rolls by a heated workpiece, and each unit carries air inflatible flotation cells to facilitate moving the unit. A horizontal track extends parallel to the cradle rolls and supports a carriage having a portion projecting cantileveredly above the workpiece. The carriage portion supports a workpiece treating unit or head and automatically adjusts vertically for changes in workpiece diameter. A tailstock unit includes a vertically adjustable horizontal spindle supporting a center tool engaging the end of the workpiece, and a signal generator senses the speed of rotation of the spindle for precisely controlling the movement of the carriage.

REFERENCES:
patent: 2175607 (1939-10-01), Kinkead
patent: 3918697 (1975-11-01), Gregory
patent: 4052039 (1977-10-01), Koyano et al.

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