ABRASIVE CUTTING EDGE OF ABRASIVE TOOL AND METHOD OF ITS FORMING AND REPLACEMENT Russian patent published in 2013 - IPC B28D1/14 

FIELD: process engineering.

SUBSTANCE: set of inventions relates to devices to secure cutting edge to the tool and to method of drill bit cutting edge replacement. Device to secure several abrasive segments to abrasive tool comprises bearing element including first part with several abrasive segments and second part opposed to said first part and secured to rotary body. Note here that said second part comprises collar extending therefrom to facilitate alignment with rotary body and at least one cutout passing through said first and second parts. Method of replacement of drill bit cutting edge comprises the jobs that follow. Withdrawal of worn-out cutting edge of drill bit from cylindrical body of drill bit. Application of sound drill bit cutting edge including circular bearing element with first part with several abrasive segments secured thereto and second part opposed to first part with collar extending therefrom and at least one cutout passing through said first and second parts. Besides it comprises centring sound drill bit cutting edge second part collar relative to drill bit cylindrical body and connection of sound drill bit cutting edge to drill bit cylindrical body.

EFFECT: ease and fast attachment to abrasive tool.

14 cl, 13 dwg