Precision replenishable grinding tool and manufacturing process

Patent · Wed Dec 31 23:00:00 EST 1997

OSTI ID:871603

Makowiecki, Daniel M ^[1]; Kerns, John A ^[1]; Blaedel, Kenneth L ^[1]; Colella, Nicholas J ^[1]; Davis, Pete J ^[2]; Juntz, Robert S ^[3]

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1. Livermore, CA
2. Pleasanton, CA
3. Hayward, CA

A reusable grinding tool consisting of a replaceable single layer of abrasive particles intimately bonded to a precisely configured tool substrate, and a process for manufacturing the grinding tool. The tool substrate may be ceramic or metal and the abrasive particles are preferably diamond, but may be cubic boron nitride. The manufacturing process involves: coating a configured tool substrate with layers of metals, such as titanium, copper and titanium, by physical vapor deposition (PVD); applying the abrasive particles to the coated surface by a slurry technique; and brazing the abrasive particles to the tool substrate by alloying the metal layers. The precision control of the composition and thickness of the metal layers enables the bonding of a single layer or several layers of micron size abrasive particles to the tool surface. By the incorporation of an easily dissolved metal layer in the composition such allows the removal and replacement of the abrasive particles, thereby providing a process for replenishing a precisely machined grinding tool with fine abrasive particles, thus greatly reducing costs as compared to replacing expensive grinding tools.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5762660
• OSTI ID: 871603
• Country of Publication: United States
• Language: English

Related Subjects

/51/
abrasive
abrasive particles
allows
alloying
applying
bonded
bonding
boron
boron nitride
brazing
ceramic
coated
coated surface
coating
compared
composition
configured
consisting
control
copper
costs
cubic
cubic boron
deposition
diamond
dissolved
dissolved metal
easily
enables
expensive
fine
greatly
greatly reducing
grinding
grinding tool
grinding tools
incorporation
intimately
involves
layer
layers
machined
manufacturing
manufacturing process
metal
metal layer
metal layers
metals
micron
micron size
nitride
particles
physical
physical vapor
precisely
precisely configured
precision
precision control
preferably
process
process involves
providing
pvd
reducing
reducing cost
removal
replaceable
replacement
replacing
replenishable
replenishing
reusable
single
single layer
size
slurry
substrate
surface
technique
thickness
titanium
tool
tool substrate
tools
vapor
vapor deposition