How to sharp the tools with PCD & PCBN inserts?

Tools with PCD&PCBN inserts are very reten-tive, but demand an occasional sharpen-ing. In comparison with conventional tool mate-rials, the sharpening of PCD&PCBN tool  s requires another approach in scope of grindingmethods and grindingwheels char-acteristics. The sharpening of polycrystalline tools is a very challenging task both for users and for wheel manufacturers.

To ensure the proper condition of PCD&PCBN sharpening process the following fac-torsare indispensable:

high precision grinding machine with stiff construction and vibration dampening system which can guarantee high preci-sion grinding, demanded during sharp-ening of PCD &  PCBN inserts; specially designed grinding wheels ap-propriate for high efficient and precision machining, which assures getting an ex-cellent blade edge quality.

What kind of  to use?

We have created a high effi-cient polycrystalline diamond wheels suit-able for sharpening tools with PCD&PCBN inserts.

Thanks to modern technology, these grind-ing wheels have met the application in extremely accurate and efficient sharpen-ing processes of PCD&PCBN tool s,which are progressively wide spread in advanced manufacturing techniques in many branches of industry.

Specification of vitrified bond :  

Model	D(mm)	T(mm)	H(mm)	W(mm)	X(mm)
	100	40	20, 32, 40	5, 10, 15	10
	125	40	32, 40	5, 10, 15	10
	150	40	32, 40	5, 10, 15	10
Grit: W3.5 W5 W10 W20 W28 W40 325/400

How to select a proper grinding wheel?

In order to obtain high quality of PCD & PCBN insert edges after sharpening; we elaborate 5 grain size from rough grinding to super finish grinding for custo

mer's needs.

As for other wheel parameters, such as grain concentration, wheel's hardness and structure are chosen individually for each user in dependence on machini ng type, used grinder and properties of sharpened tool.

Grain size selection of vitrified diamond grinding wheel:

Grain Size	Machining Type	Application
D35 ,D20	Rough	Regrinding a blade edge profiling and sharpening of much worn inserts.
D15	Universal	Standard grain size-can also getting a high sharpening efficiency and good quality machined surfaces .
D9	Finish	Finishing grinding – getting a very good quality of machined surfaces.
D6	Super finish	Super finish grinding – getting a brilliant quality of machined surfaces.
According to customers' requirement

How to set the machining parameters?

During PCD & PCBN inserts sharpening one should pay a particular attention to the proper selection ofmachiningparameters.
Diamond grinding wheel, even made with the most advanced technology, never be efficient if its working conditions or machin-ing parameters will be improper.