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  1. Home
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  3. TungDrillTri, new indexable gundrills

TungDrillTri, new indexable gundrills

18 March, 2015
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By Niraj M Wanikar, Chief Editor, CNCTimes.com, 2015-03-18 10:52:33

Tungaloy introduces TungDrillTri, the new series of indexable gundrills. Deep hole drilling is one of the most difficult operations and tends to be a bottleneck for many manufacturers. In most cases, brazed gundrills and solid drills are used; however, there are some problems to be solved.

Brazed gundrills are difficult to improve its machining efficiency. Those tools are usually made of cemented carbide with no coating, and, thus, not applicable for high-speed cutting. To increase the feed rate is also very much limited as the operation is performed by a single cutting edge.

As for solid drills, although higher feed can be applied compared to gundrills, hole deflection and tool damages due to poor chip evacuation may occur. Plus, both brazed gundrills and solid drills put a huge burden on customers, such as the cost for regrinding and the management of spare tools.

TungDrillTri is the innovative indexable gundrills to solve these problems. The series provides the same circularity, straightness, and surface finish as brazed gundrills because of the optimized positioning of the insert and two guide pads. The insert has the chip splitters. By splitting the chips, the cutting force is reduced, allowing the feed to be increased more than gundrills. The chips created by TungDrillTri are smaller than those by gundrills and solid drills, resulting in more stable chip evacuation. In addition, the coated inserts and guide pads enable high-speed cutting, where the conventional brazed gundrills were not feasible.

TungDrillTri contributes to highly efficient operation while maintaining stability and provides easy tool management due to indexable insert system, which helps increase the productivity and reduce the cost in deep hole drilling.

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