Roll Forming Machine style Technology Introduction

GENERAL ideas of cold roll former line processing:

Roll-forming may be a method within which the form of a metal panel is developed by bit by bit bending the metal through a series of roll stands, or passes. every stand should generate the acceptable quantity of deformation that it had been designed. In general, the extent o deformation at every stand isn't constant thanks to changes for springback and also the preservation of dimension. Since the tooling is intended to manage the skin dimensions o a panel, roll formers area unit sometimes designed to overwork the metal in specific stands. issues within the forming system or tooling style could exist if materials got to be overworked within the stands/tooling apart from those designed for overwork. Therefore, once roll-forming issues occur, it's vital to look at every stage of the method and not simply the stand at that the matter at first seems.

The goal of a sleek 'roll-forming' operation is achieved once there's uniform meta deformation throughout the road. Roll formers area unit designed to be fairly quiet throughout the operation. they're not designed to run with material "popping" and wrinkling throughout the operation. If this happens, the operation has to be investigated.

Two basic forms of roll-forming systems area unit utilized: a precut line and a postcut line. A precut line shears the incoming material to a selected length before roll-forming. throughout post cut line operation, the roll shaped panel runs endlessly and is sheared to the specified length once roll-forming. Figure one on page fifteen illustrates associate degree example of each forms of systems.

MATERIAL

One of the principal parameters that outline the success of a roll-forming operation is that the nature of the fabric. so as to style the optimum method, the tooling designer ought to be provided material info to be used before the tooling coming up with. This includes material mechanical property ranges, gauge tolerances and form tolerances. additionally, totally different gold-bearing coatings, organic coatings or paint can end in variations in performance even with identical set of tooling thanks to their totally different resistance characteristics.

The designer needs a transparent understanding of the gauge tolerance to be provided. Ideally, a a lot of strong operative window is achieved if the complete vary of tolerance is provided to the tooling designer. The tooling styleer can typically design the tooling to the thickest gauge. Ordering the tooling to a full ASTM tolerance whereas receiving materials with a 0.5 or one-quarter customary tolerance can manufacture a roll former with a less strong operative window than either the designer or the panel manufacturer supposed