Abrasive coated bit
AssigneesCredo Technology Corporation, Robert Bosch GmbH
InventorJie Liu
Life of this patent
Estimating the term…
Abstract
A rotary tool accessory and method for shaping hard, brittle material is disclosed. In one embodiment a rotary tool accessory for cutting hard, brittle material, includes a shaft for coupling with a rotary tool, a work portion extending outwardly from the longitudinal axis of the shaft, the work portion including a cylindrical portion and a spherical portion, a nickel based bonding material affixed to the work portion, and a plurality of abrasive particles extending outwardly of the bonding material.
Claims15
A rotary tool accessory for cutting hard, brittle material, comprising:
- a shaft for coupling with a rotary tool;
- a work portion including a cylindrical portion and a spherical portion;
- a nickel based bonding material affixed to the work portion;
- and
- a plurality of abrasive particles extending outwardly of the bonding material.
A method of drilling a hole in a hard surface comprising:
- positioning a spherical work portion of an accessory on a target area of the hard surface;
- rotating the accessory with the rotary tool;
- pivoting the rotating accessory to initiate a bore into the hard surface at the target area;
- and
- swirling the tool with the bit in a conical shape to drill the hole.
A method of making cut-outs in a hard material comprising:
- reciprocating the accessory along the axis direction of the bit in the hard material and push the tool in the desired direction to make cut-outs of any shape and any size.
A rotary tool accessory for cutting hard, brittle material, comprising:
- a steel shaft for coupling with a rotary tool;
- a work portion including a first functional area and a second functional area;
- a nickel based bonding material affixed to the first functional area and the second functional area;
- a plurality of abrasive particles extruding outwardly of the bonding material on the first functional area and the second functional area.
Dependencies are inferred from the claim text.