Rolling annular workpieces
AssigneeFormflo Limited
InventorRonald Carl Andriessen
Life of this patent
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Abstract
An annular workpiece 6 is rolled between two oppositely disposed forming rolls 2, 4, and two oppositely disposed growth rolls 22 and 24 acting at right angles to the line of action of the forming rolls. The forming rolls 2, 4, are brought together to roll form the workpiece 6 to a wall thickness dependent upon its weight, and the advance of the growth control rolls 22, 24 is controlled to a position which is also dependent upon the weight of the workpiece 6.
Claims7
A method of roll forming an annular workpiece in a rolling machine comprising two oppositely disposed forming rolls, at least one of which is movable towards and away from the other, and two oppositely disposed sets of growth control rolls having a line of action at right angles to the line of action of the forming rolls, which method comprises advancing at least one forming roll to roll form the workpiece to a wall thickness which is dependent on the weight of the workpiece, and controlling the advance of the growth control rolls to a position which is also dependent on the weight of the workpiece.
A rolling machine for annular workpieces comprising two oppositely disposed forming rolls, at least one of which is movable towards and away from the other, and two oppositely disposed sets of growth control rolls having a line of action at right angles to the line of action of the forming rolls;
- a mandrel for mounting a workpiece;
- means for weighing a workpiece to be rolled;
- and means for controlling the advance both of the forming rolls and of the growth control rolls, which means is set in relation to signals from the weighing means.
Dependencies are inferred from the claim text.