Selected articles from November/December 1998 issue published on TheFabricator.com:
Press- and servo-driven roll feeds and gripper feeds are almost as common to the stamping industry as sheet metal and dies. Knowing how to use them effectively may not be so common.
Gripper or roll-type feeds operate on the principle of feeding force, which is a product of the coefficient of friction between the grippers or feed rolls and the material being fed. Reviewing each force as a factor of the feeding equipment or feeding conditions helps in evaluating the feeding process.
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