Sunnen's DirectDex Deep-Hole Drilling System for Heat-Resistant Superalloys
Sunnen Products Co.’s DirectDex series of drill heads, inserts and pads are said to be directly interchangeable with Sandvik deep-hole drilling tools. The line includes BTA/STS (single-tube system) and DTS/ejector (double-tube system) style deep-hole drilling tools designed to lower the cost per bore with consistent performance.
CVD- and PVD-coated inserts are available in two grades that provide wear resistance and toughness. The CVD-coated inserts are optimal for machining heat-resistant superalloys and also work well with ISO P, K, H and N materials, the company says. The PVD-coated inserts are specifically designed for ISO P, K, H, and N materials, and also provide resistance against built-up edges.
“We are excited to be able to fill the recently created void in the market for Sandvik-style tooling,” says Chris Miltenberger, president and COO. “This is congruent with our strategy to be the one source solution for systems and tooling related to bore machining, whether the process used is deep-hole drilling, skiving/roller burnishing, lapping or honing.”
Vibration is at the heart of a variety of common problems in machining holes. Mathematical analysis is helping to bring about a better understanding of hole-making processes...including how these vibrations behave, and what steps to take to bring them under control.
The more common twist drill point geometries often are not the best for the job at hand. By choosing the best point for the material being drilled, it is possible to achieve better tool life, hole geometry, precision, and productivity.
Most turning centers are equipped with some helpful canned cycles. Fanuc, for example, has three simple, one-pass canned cycles (G90 for turning and boring; G92 for threading; and G94 for facing).