Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1987-07-23
1988-08-16
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72 99, B21D 304
Patent
active
047635045
ABSTRACT:
A cross-roll straightener adapted to straighten round metal stock, wire, rods, bars and tubes by rotatingly advancing the stock through a central curved pass such that it is flexed beyond the yield point in a substantially uniform and gradual manner. A three pair roll arrangement provides uniform guidance and flexure while avoiding marking or collapsing of the stock. Also provided is a method for maintaining the stock in the pass line of a cross-roll straightener having a female roll and a male roll of unequal diameters. In addition, positive guidance and considerably more capacity to straighten smaller stock sizes is obtained by providing adjustable outboard roll supports at each end of the basic six-roll straightener, thereby also reducing whipping of the stock.
REFERENCES:
patent: 2556120 (1951-06-01), Sutton
patent: 3780558 (1973-12-01), Lilienthal et al.
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