SUMMARY

·         Thrilling promises to revolutionize threaded-hole production by combining short-hole drilling with thread milling in a single high-speed process using a single spindle and a single cutting tool.

·         Thrilling, a high-speed blind-threaded-hole-generating process, can be used on any CNC machining center with helical interpolation.

·         Rotating at high speed, a combination tool with a drill point and threaded body drills, chamfers, and threads a hole.

·         Combination tools improve machining center productivity. On a conventional machining center, it may take two seconds to produce a threaded hole; with a high-speed spindle, perhaps half a second.

·         The single tool combines the drill, reamer, and tap functions and, if the Thriller length is made for the hole-depth required, the countersink can also be eliminated.

·         Not only are multiple operations eliminated, but all the in-between tool-change times, which add no value and can be longer than the cutting-cycle times, are also eliminated.

·         Threaded-hole depths are limited to about three hole diameters.

·         Thread quality with the Thriller is better than that produced by other means, except thread grinding.

·         The cumulative pitch error of one M8 x 1.25 Thrilled thread examined on a CMM was 0.001 mm, or less than 0.08%.

·         Thread flanks show a constant straightness and the entire thread form fell within a 6H Class tolerance band, which corresponds to a Class 2B English thread. This quality has been achieved on up to 10,000 holes with the same tool.

·         The same Thriller tool can be programmed to produce different classes of thread because thread class is essentially a function of fit or percentage of thread.

For more information on THRILLER COMBINATION TOOL see the Website: www.turchan.com

Copyright 2004, Industrial Press, Inc., New York, NY