Grinding member for buttons on rock drill bit

Details Grinding member for buttons on rock drill bit Grinding member for buttons on rock drill bit

2008-03-19

2010-10-12

Rachuba, Maurina (Department: 3727)

Abrading

Machine

Rotary tool

C451S342000, C451S357000

Reexamination Certificate

active

07811155

ABSTRACT:
The present invention provides a grinding member or connection to a drive connection member to form a grinding cup for grinding the hard metal inserts or working tips of drill bits (percussive or rotary), tunnel boring machine cutters (TBM) and raised bore machine cutters (RBM) to restore them to substantially their original profile, said grinding member having: a. a grinding section having top and bottom surfaces, a centrally disposed convex recess formed in the bottom surface of said grinding section having the desired profile to be ground; b. a support section adjacent the top surface of said grinding section; c. means to connect the grinding member to the drive connection member wherein the grinding member can be disconnected from the drive connection member when it becomes worn.

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