Taper rolling machine
AssigneeBritish Steel Corporation
InventorsEdward J. Furness, Philip Wade
Life of this patent
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Abstract
The invention relates to a taper rolling machine which is designed such that the stock may follow a constant pass line throughout the whole of the taper rolling operation. In particular the taper rolling apparatus comprises a pair of idler rolls (7 and 8) and a carriage (2) for gripping the stock (12) and drawing it through the rolls in a multiplicity of passes whilst the roll gap is controlled to impart the taper, this roll gap being adjusted by movement of only one (8) of the idler rolls. The invention is manifested by the carriage (2) being pivotally mounted at 6 and resiliently supported at its forward end by pneumatic, hydraulic or mechanical spring means--this enables the carriage to move in such a fashion as to maintain the stock at a level by which a constant pass line is secured.
Claims10
Apparatus for taper rolling a length of stock comprising a roll head having a pair of idler rolls defining a roll gap therebetween;
- a carriage for gripping the stock and drawing it through the rolls in a multiplicity of passes whilst the roll gap is controlled to impart the taper;
- adjustment means to adjust the roll gap by effecting movement of only one of the idler rolls in a direction perpendicular to the movement of the stock;
- and, resilient mounting means attached to said carriage for resiliently mounting it for movement in a direction perpendicular to the movement of the stock so as to maintain a substantially constant pass line through the stock throughout the taper rolling thereof.
Apparatus for taper rolling a length of stock comprising a roll head having a pair of idler rolls defining a roll gap therebetween;
- a carriage for gripping the stock and drawing it through the rolls in a multiplicity of passes whilst the roll gap is controlled to impart the taper;
- control means imposed on only one of said idler rolls;
- means pivotally mounting said one of said idler rolls to move in an arcuate path perpendicular to the movement of the stock to adjust the said roll gap;
- and, resilient mounting means attached to said carriage for resiliently mounting it for movement in a direction perpendicular to the movement of the stock so as to maintain a substantially constant pass line through the stock throughout the taper rolling thereof.
A method of taper rolling a length of stock in an apparatus having a resiliently mounted carriage to which the stock is attached, a roll head having a pair of idler rolls defining a roll gap therebetween, and means to reciprocate the carriage such that the length of stock passes forward and backward between the pair of idler rolls, comprising the steps of:
- (a) raising the resilient mount on said carriage during a forward pass to raise the stock such that it freely extends between the rolls;
- (b) moving one of said idler rolls in a direction perpendicular to the movement of the stock to close the roll gap when the carriage reaches the limit of its forward travel;
- and,
- (c) moving the stock and carriage in a backward direction such that the idler rolls work the stock into a tapered form wherein the resilient mounting accommodates the force imposed on the stock to maintain a constant pass line.
Dependencies are inferred from the claim text.