FINISHING METHOD BY MEANS OF ELASTIC TOOL Russian patent published in 2007 - IPC B24B39/02 

FIELD: manufacturing processes in machine engineering, namely mechanical working of openings of sleeves and engine cylinders.

SUBSTANCE: method comprises steps of imparting to tool rotation, reciprocation motion along axis of blank and radial feed; using tool having body with central opening where rod and working deforming and antifriction members are arranged. Deforming members are in the form of deforming turns of helical cylindrical spring. Working antifriction members are in the form of turns with antifriction coating of helical cylindrical spring. Said two helical cylindrical springs are made of elastic metallic wire and they are mounted according to condition of alternation in lengthwise direction of tool of deforming turns and turns with antifriction coating. Ends of helical cylindrical springs are secured to body. Radial feed of tool is realized due to reciprocation and rotation movements of rod relative to lengthwise axis of body with use of helical groove formed in rod and designed for receiving pin secured to body.

EFFECT: improved quality and enhanced efficiency of working.

7 dwg, 1 ex