METHOD FOR STRAIGHTENING DISC SAWS Russian patent published in 2004 - IPC

FIELD: rolled stock production, namely machines and processes for straightening disc saws of sheet materials. SUBSTANCE: method comprises steps of feeding disc to working zone by means of carriage; driving rollers to rotation; reducing by means of driven and non-driven rollers straightened disc when the last is guided between rollers and when it is removed out space between rollers; introducing disc between rollers until opening for placing disc at speed consisting 35 - 40% of maximum speed of carriage; displacing disc out of space between rollers before rollers achieve disc periphery at speeds varied depending upon type of disc surface non-planeness; dividing path of disc straightening by three similar portions; setting speed values at boundaries of said divided portions of disc path depending upon maximum speed of carriage, namely: when disc surface non-planeness is so called "tray" type non-planeness, removing disc out of rollers at one speed value and at "screw" or "propeller" type non-planeness of disc removing disc out of rollers at other speed values; providing linear change of said speed values depending upon covered distance; using straightening rollers each of them is in the form of three separate cylindrical holders freely rotating one relative to another, mounted in common axis and spaced one from another by interval 10 - 15 mm; placing driven and non-driven rollers one relative to another with pitch consisting 0.9 - 1.2 roller diameter; in order to lower compression stress, applying grease onto disc surface; straightening disc by several cycles for providing curvature no more than 1 mm for 1 running meter. EFFECT: enhanced quality of straightened discs. 3 dwg, 2 dwg, 1 ex