Wednesday, 27 April 2011

Precision Diamond Tool R&D

At DiamTech, we believe that in the precision diamond tooling industry, the key to advancement is through research and development. In a field that is already working with sub micron and nanometre tolerances, where form tolerance improvement of 1/10th of a micron represents a “mile stone” it can sometimes feel like true advancements are unachievable.
How do you predict the unpredictable? How do you bring consistency in a process that seems highly inconsistent? Research is the answer. A diamond’s crystal structure may be unpredictable but with experience, we have come to realize that by using a consistent manufacturing protocol and analysing the end results, modifications can be brought to the manufacturing process to obtain highly consistent and repetitive results.
We believe there is always a better way to do things. Observation of aspects such as tool wear pattern, crystal structure properties, form deviation analysis and thermic affects can provide clues that can result true innovations, helping to create tools that perform better and longer.
With the constantly rising demand for SCD tooling, most manufacturers are too busy with production or lack the man power to accord sufficient importance to R&D. Many theories can be assumed, but until they are proven with consistent results they will always remain “experimental”
This is where DiamTech can help, with our already broad knowledge of the SCD tool manufacturing process, we can assist or undertake almost any diamond tool relevant research project you may have in mind. We can even suggest fact based theories which we believe could potentially be the next “mile stone” of our industry!

http://www.diamtech.ca/#!research

Monday, 4 April 2011

Form Correction Compensation Software for Controlled Waviness SCD Tool Making

With SCD tool grinding machines with nano precision capability, one must question the value of available form compensation software offered on some of these machines. Is it really worth the investment?

Based on the years of diamond tool wear analysis, I can't help concluding that the hard and soft directions in the diamond's crystal structure plays a large role when it comes to wear patterns that form during the cutting process. A more consistent hardness through the sweep of the radius will produce a more consistent wear as opposed to a fluctuating hardness value across the sweep will produce a more uneven wear pattern that translates to reduced surface quality of the parts being machined.

Yes the form ccompensation software can help you produce controlled waviness tools with extremely low waviness by compensating for the difference in hardness value of the hard and soft directions, but how many cuts will your customer get with this tool before the wear pattern affects the surface finish?

I believe that it would be a much better investment to commit to research that would expose crystal orientations that would  represent a more consistent transition between the plane within the diamonds to promote the production of high precision diamond tools that would not only cut more consistently for the manufacturers, but also retain its precision form longer to result in better performance and longer tool life.  

http://www.diamtech.ca/