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KB43: The odd roll principle.

Category: Straightening Process | Updated: 6/4/2007 3:11:02 PM | Owner: The Professor | Read: 2456 (Last: 7/31/2014 12:05:05 PM)

Resolution

Most coil stock straighteners are equipped with an odd number of rolls, with the extra roll generally in the lower bank. This is because material is generally uncoiled from the top of the coil, placing the coil curvature with the “belly up” so that the straightening rolls want to be always pushing upward. An advantage of this arrangement is that a slight upward curvature can be induced into the straightened material through careful adjustment. Such a curvature helps slide the material more readily through the die.

Related articles
KB40  How many rolls?
KB41  What roll diameters?
KB42  Backed up rolls?
KB44  From bottom of coil.
KB45  The “overshot” roll
KB46  Ability to straighten
KB47  Recording roll settings
KB48  Using dial indicators
KB49  Correcting loop distortion
KB50  Two-plane straightening
KB51  Dual-head straightening
KB52  Angular head straightener

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