The recent advancement of compacting and turbocharging technologies for automotive engines due to the improvement of fuel efficiency as well as the expansion of the aerospace market have increased the demand for the drilling of components made from exotic alloys such as stainless steel, titanium alloys and heat-resistant alloys.
In drilling such materials, tool life tends to be shortened due to the cutting edges being exposed to high temperatures, increased wear on the cutting edges and the adhesion of work materials on the cutting edges.
To overcome these issues, Sumitomo Electric has developed the MULTIDRILL MDM series. The series features the Company’s proprietary Bean Jet Cooling technology that effectively cools the cutting edges based on fluid analysis. In addition, low drilling resistance and excellent chip evacuation have been achieved by optimizing the drill design and utilizing a newly developed coating. These efforts minimize the work hardening of the inner wall surface of the drilled stainless steel, contributing to long tool life and low machining costs as compared to conventional products.
Sumitomo Electric’s unique bean-shaped oil hole features a larger cross-section than conventional circular holes and it delivers approximately twice the volume of cutting fluid.
