Werner & Pfleiderer Gmbh

Siegfried Kuklinski

Gerhard Gnadig

Willi Flottmann

A process and apparatus for aligning the cutting surfaces of cutting blades of a granulating device, in which an abrasive plate is detachably connected to the granulating hood of the granulating device after disconnection of the hood from a die plate. The abrasive plate remains fixed and the cutting surfaces of the cutting blades are ground by rotating the cutting head so that the cutting surfaces will be aligned axially on the axis of rotation of the drive shaft of the cutting head and located in a common plane perpendicular to the axis of rotation. The grinding operation for alignment can be carried out in situ on the granulating device, or the granulating hood and cutting head can be removed from the granulating device and the grinding and alignment can be effected in a separate support.

Apparatus for aligning the cutting surfaces of cutting blades of a

A wear-protected workpiece of metal, particularly a perforated granulation plate for plastic extruders, comprising shaped members of wear-resistant material inserted in recesses in the work surface of the workpiece, the spaces between the walls of the recesses and the shaped pieces being filled with a binder. In order to minimize the expenses of manufacture and repair of the wear-protected workpiece and make it possible to use non-metallic wear-resistant material for the insert member, the recesses and the shaped members have walls which widen at least in two opposed regions, the largest dimension of the widened wall of the shaped member being equal to or smaller than the dimension of the opening of the corresponding recess so that the insert member is freely inserted into the recess and forms a space therewith in which a binder can be filled to form a locking means for the insert member in the workpiece.

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Stuttgart, Germany

Siegfried Kuklinski