Diamond Toolmaking
Coborn is wholly focused on providing engineered solutions for every aspect of the processing of diamonds and superhard materials
Toolmaking
Coborn’s machines are designed for processing the world’s two hardest and most extreme materials: diamond (or ‘cubic carbon’) and its structurally similar sister cubic boron nitride (cBN). Our machines can also easily grind and shape traditional hard tool materials, such as cemented carbide and ceramics.
Numerous forms and formats of diamond and cBN are now available and each has required the engineering of a specialist processing solution.
Toolmaking Products
Reciprocating Grinders
The Reciprocating Grinding series of machines are primarily designed for grinding Polycrystalline Diamond (PCD) and Polycrystalline Cubic Boron Nitride (PcBN). The machines range from manual entry level to fully autonomous systems for lights out production, with tooling and accessory options to cover all applications.
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Planetary Grinders
The Planetary Grinding series of machines are specifically designed for grinding single crystal diamond. The planetary motion of the wheel allows the grinding direction to be changed so the ‘soft’ direction of the diamond can be found. The choice of machine depends on the application and the level of accuracy required.
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Form Grinders
These machines have the ability to grind high-accuracy bespoke thread forms, often required for mould tool assembly work, and cut tapered polygons on the end of otherwise cylindrical geometric forms.
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Lapping Series
Our Lapping Series consists of Planetary Lapping machines which are designed to polish the top surface of PCD discs to a flat mirror finish and can also be used to polish CVD disks and PcBN.
The PL4i is equipped with 4 fixtures and a fifth fixture can be fitted as an optional extra, whereas the larger PL5i is equipped with 6 fixtures as standard.
Bench Series
Coborn’s Bench series includes Planetary Scaif benches which are generally used to polish facets on single crystal diamond tools. They may also be used in gem diamond polishing. The bench combines the high speed rotation of a scaif plate with a relatively slow, smooth, horizontal planetary motion. The planetary motion speed is variable between 0-50 cycles/minute.
Learn moreFind a solution, it's as easy as 1-2-3
Using our solutions configurator, we can help you find the right processing solution for your business; in only three easy steps.
1 CHOOSE YOUR MATERIAL
2 WHAT ARE YOU MAKING?
3 YOUR SOLUTIONS
TL1
PG6
Ultra-high precision, CNC grinding machine for single crystal diamond tool manufacture
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RG9AR
SK-KKAS
SK-KK
PS2BS
Planetary scaife bench for single for single/mono crystal diamond on steel bench.
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PS2BG
Planetary scaife bench for single for single/mono crystal diamond on granite bench.
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FG1A
FG1A - Form Grinding Machine for Single Crystal Diamond. Designed to meet the needs of the toolmaker supplying the jewellery and horological industries, the FG1A Form Grinder has a number of features which make it ideal for natural diamond form (Posalux) tooling. The FG1A comes mounted on a Strong tubular steel frame, the control panel and touch screen can be mounted for either right or left handed control and operation. Embedded PC for quick easy programming, can be connected to the internet for remote diagnostics and programming help.
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PL4/5i
RG9A
PG3B
The PG3B has air bearings for both the pivot and the water cooled wheel spindle. The machine is designed for making: • Low or controlled waviness, radius tools • Multiple facet tools, conical tools The pivot motion is automatic and controlled via a touchscreen. Pivot angle limits, dwell time at end of stroke and pivot speed can all be pre-set. If ‘hard’ spots exist on the diamond then temporary pivot limits can be selected whilst running. Tools are inspected via a VS5G vision system.