FIELD: mining.
SUBSTANCE: drilling bit rolling cutter includes housing with rims reinforced with hard-alloy inserts. Rolling cutter is provided with a sleeve rigidly fixed on a rim which one end is designed with slots for hard-alloy inserts with congruent contact surfaces. Hard-alloy inserts are made on the top side with supporting surface interacting with walls of sleeve grooves.
EFFECT: simplifying technology of attachment of hard-alloy teeth to rims of rolling cut.
3 cl, 7 dwg
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Authors
Dates
2012-09-27—Published
2011-04-29—Filed