RG8 Automatic Grinder
RG5A Manual Grinder
PG3 Planetary Grinder
PG3B Planetary Grinder
Grinding Machine Fixtures

Other Coborn Products
DB1 Digital Balancing Machine
BM2 Edge Honing Machine
Analog Balancing Machine
Laser Dicing Machine
Lapping Benches
Gem Polishing Benches

Coborn Engineering website

Polycrystalline diamond (PCD) cutting tools are used extensively throughout metalworking and woodworking because of their long lives and precision capabilities. Now the Coborn LD2 makes dicing this extremely hard material even faster and easier, with greater yields.

Standard EDM equipment cuts at a rate of 1-5 mm/min, as opposed to >100 mm/min. with the Coborn LD2. Thus, a 74 mm PCD disc can be reduced to 5 x 6 mm rectangles in less than twenty minutes, rather than 18 24 hours with an EDM machine. Since cuts can start anywhere on the disc, there's less waste. The laser punches directly through the PCD so there's no need to draw the lead-in and lead-out paths as with EDM. And laser cutting reforms the carbide substrate to hold all of the pieces in place… a gentle pressure breaks the welds as with pieces in a chocolate bar. Yield is further improved by the narrow laser path of 0.07 - 0.08 mm, vs. up to 0.3 mm with EDM. Thus, up to 15% more useable pieces can be produced than with EDM. And the only consumable is nitrogen gas... not bulky de-ionized water plants or wire or wire breakage.

The Coborn LD2 system consists of five main units- the cutting enclosure, control system, laser generator, extract and water chiller. The ergonomically designed cutting enclosure is fabricated from stainless steel with sliding door and fume extraction. Laser optics are mounted in a fixed position, while the X, Y & Z axes move th work table. Collets hold discs up to 95 mm diameter and 5 mm thick. Position control is to 10 microns. Profiles from any CAD program that will export DXF are downloaded to the control system. A 12" LCD touch screen provides operator interface.