TOOL UNIT FOR ELECTRO-MECHANICAL SCREW SURFACE PROCESSING Russian patent published in 2010 - IPC B24B39/00 B21H3/12 

FIELD: mechanical engineering.

SUBSTANCE: device consists of case, of bearing assemblies arranged in case, of disk roller with hub and working profile on periphery designed to rotate in bearing assemblies, and of spring. The spring facilitates contraction of the disk roller to processed side surfaces of screw grooves of screw surfaces. The bearing assemblies are made in form of a sliding thrust bearing. The spring is made as a compression spring and is installed between the side wall of the case and end surface of one of the sliding thrust bearing. The hub of the disk roller is made spherical in form of a working semi-sphere; its centre is located in geometric centre of the disk roller. Working semi-spheres of the hub are conjugated with the sliding thrust bearing and form an adjusted spherical joint. The sliding thrust bearings are designed to travel along axis of the disk roller and to be fixed in the case for adjustment of the said spherical joint. A system of channels in the bearing assemblies lubricates the spherical joint.

EFFECT: raised efficiency and reliability of electro-mechanical processing.

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