![]() There’s no need to do this until the hole reaches a threshold depth, but once we’re at that depth it helps a lot.Lastly, as long as we’re programming a custom cycle, we want to consider whether to use rapids or feedrate speeds for the peck and retraction from the hole. As the hole gets deeper, we benefit by reducing the feedrate and spindle rpm. Lastly, we want to be able to prevent the twist drill from retracting entirely clear of the hole so that chips are not washed back down the hole.Second is our feeds and speeds. But, as we get deep, longer and longer retractions are necessary as we need to not only break the chips but facilitate chip extraction. We are pleased to offer expert application engineering to make this happen.We start out with a little short retraction–just enough to break the chip. However, gun drills of such small diameters require that the specific operating parameters are followed to ensure success. The strength afforded by the absence of a braze joint at the tip with tubular construction gun drills provides better penetration rates and tool life. Medical instruments, automotive fuel systems, the glass industry, and many other applications can benefit by gundrilling very small holes with solid carbide flute drills. ![]() They are manufaturered from micrograin carbide and available in several PVD wear resistant coatings. Positive rake chip breakers and chip splitting geometries allow the use of feed rates 3 to 4 times greater than that of traditional gun drills. Quick availability due to stocked wear parts and most common boy sizes. Lengthens tool life due to full coating, edge treatment and indexable designs Shortens downtime resulting from quick exchange of worn partsĮasy to use, no sharpening, no length adjustment, easy inventory of wear parts. High effieciency by specifically developed cutting edge geometry for diea chip formation ![]() Versatility for use on lathe, machining centers and deep hole machines. ![]()
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