COMBINATION TYPE GRINDING WHEEL Russian patent published in 2006 - IPC B24D5/06 

FIELD: tools for working metals.

SUBSTANCE: combination type grinding wheel includes metallic band with large-grain abrasive layer rigidly secured to body of wheel along helical line and metallic band with small-grain abrasive layer placed in T-shaped grooves of body along helical line and resting through hydroplastic member upon thermal-bimetallic belt connected with electric current source. Large-grain layer is continuous one, small-grain layer includes alternating abrasive portions and lubricating members in the form of grooves filled with grease and having dove tail cross section.

EFFECT: enhanced quality of ground parts.

5 dwg