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Newsletter "SEI NEWS" 2014

Home > Company Information > SEI WORLD > Back number > Vol.439

[Newsletter "SEI WORLD" Vol.439]

Strong Multi-Drill HX

Sumitomo Electric sells cutting tools used for cutting, grinding, and drilling metal, thus contributing to improvements in productivity and reduction in machining costs. Today, the development and production of these cutting tools has been conducted by one of its subsidiaries, Sumitomo Electric Hardmetal Corporation.

■Product data

Release date February 2014

Where is Strong Multi-Drill HX used?

We manufacture and sell drill bits used for the production of various parts for automobiles, aircraft, and electronic equipment. The diameter of our drill bits varies from the largest at 68 mm to 0.1 mm or less for electronic parts.

  Strong Multi-Drill HX is mainly used for drilling large-sized parts made of cast iron*, such as engines for automobiles and construction equipment as well as machine tools.


What are the features of Strong Multi-Drill HX?

This drill bit can perform drilling 1.5 to 2 times more efficiently than conventional drill bits.

The newly-designed thinning at the drill head reduces the workload during machining. Also, the improved rigidity and chip flow contribute to increased productivity in the workplace.


* Cast iron:
An iron product formed by pouring molten iron into a mold to solidify, also known as casting.

■Interview with engineers in charge

Yoshiji Sato, Sumitomo Electric Hardmetal Corp. / Kazumasa Kurizuka, Sumitomo Electric Hardmetal Corp.

What are the difficulties in developing Strong Multi-Drill HX?

Increasing productivity in drilling work puts a high load on the equipment and often interrupts operations. On the other hand, sharpening the edge to reduce the load on the equipment puts more stress on the drill bit and breaks it. After repeated trial and error, we developed a unique edge design, RX thinning, by curving a thinning section that is usually straight in conventional designs. The new design enabled us to develop a strong drill bit, as the product name suggests, which was highly durable even with increased productivity.

What features of this product are well regarded by customers?

Production of large components, such as engines for trucks and construction machinery, requires the drilling of many holes for fixing bolts. Strong Multi-Drill HX can work twice as efficiently as conventional drill bits and still extends tool life. Strong Multi-Drill HX increases productivity while reducing production costs, which is the feature our customers find most attractive.

2014 Index
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