Machine for finishing ferrite magnetic pot cores

Claim 1

A machine for finishing magnetic half-pots which have, on the open side, side edges for assembling half-pots together and a center part designed to be machined to create a preset air gap for the pot core assembly, comprising: a reference plane supporting the side edges of the half-pots, at least one grinding wheel projecting through said reference plane in between said side edges, feed means for feeding said half-pots along said reference plane to said grinding wheel, and pressure means for pressing the side edges of said half-pots onto the reference plane while said center parts is engaged by each said grinding wheel, said pressure means comprising a flexible elastomeric support wheel opposite each said grinding wheel engaging directly each half-pot to form a yieldable back support for grinding, providing the support force by self-deformation while retaining said side edges of said half-pots in contact with said reference plane and thereby providing precision as to the amounts removed from said center part by grinding, said feed means comprising feed elements with openings matched to the shape of the half-pots and lamellar in form, and means for moving said elements freely between said support wheel and said grinding wheel, said means for moving said feed elements comprising a single endless drive chain extending parallel to the direction of travel and in a plane parallel to the reference plane and having extended pins comprising the sole elements on which said feed elements are removably mounted, so as to enable quick replacement of each said feed element, said chain having successive links articulated to each other about axes perpendicular to said reference plane said lamellar feed elements moving along said reference plane, laterally with respect to their respective links and each feed element having a slot and an opening receiving respectively two successive said extended pins.