b'Threading is typically one of the last processes performed on a part.capable of helical interpolation,said the choice ultimately comesyou can be far more precise with a which means that the machiningdown to what a customer wants andthread mill than you can with a tap. center can move with simultaneousneeds. And for many applications, that pre-motion in three axes, Ford said. Thepreferredmethodforcision is critical.He said in the past, program- producing threads is tapping, he ming this action might have beensaid. While a large majority ofControlling Chipsa challenge, but most modern CNCall threads are done using a tap,Fordsaidthreadmillingalso equipment is easily capable of he-lical interpolation, and most tool-ing suppliers offer software and applications to help customers. YG-1 Tool (USA) recently released a thread milling program generator, YG-1 TM Xpert, which generates G code required for thread milling and displays relevant images and data.In addition, Strauchen said ex-otic solid-carbide thread mills todayMILLINGare made with a left-handed helixJUST BECAMEand left-handed cut, which permit an operator to run from the top ofDYNAMIC!a hole to the bottom and climb-mill threads.Trochoidal slottingThiswillcreatearight-hand thread in the part, he said. and pocketing capability.Compared with tapping, threadmilling also can be more precise. Heavy duty core withWe are talking microns of preci- a specialized flutesion, Blandon said.Although taps can be used in ex- design.otics, Ford said taps might not be Wide range of cornerthe better choice for several rea-sons, such as precision and poten- radii available.tial scrap cost. Like the other com-Chip Breaker optionspanies interviewed, YG-1 Tool (USA) produces taps and thread mills, in- available.cluding those for exotic metals. He contributors Emuge Corp.800-323-3013www.emuge.comNorth American Tool Corp. Thecombinationof aggressive suggested step over and feedratesallowfor800-872-8277 increasedmaterialremovalrates comparedtocompetitorsparameters.ttps://www.kyocera-sgstool.com/products/h-coducts/h-carb-series-77arb-series-77www.natool.com Visit https:/YG-1 Tool (USA) Co. to learn more!800-765-8665www.yg1usa.comctemag.com/cteguide.com67Threading.indd 67 7/17/20 3:34 PM'