b'feature built in to them. Technology Advances be very hard to break, he said, so With the guide bushing out, SwissThe appeal of Swiss machiningbig Swiss OEMs now offer some users are back to lathe-type turningalso has increased due to develop- kind of chip breaking technology. of parts with maximum length-to- ments in chip control. Garber saidStar CNC Machine Tools version is diameter ratios of 3-1. Swiss machines do a good job withsoftware called HFT, which stands Now youre chucking with a col- difficult materials, such as Nitral- for high-frequency turning. It decel-let on the main spindle, Garberloys, high-nickel alloys and someerates the feeding process a little said, but you can actually hold verynewer types of stainless steel. But tight tolerances that way. chips made of these materials cancontinued on Page 28The reason, he explained, is that there is a bit of slop, or clear-ance, between a guide bushing and a workpiece but none between a chuck and a workpiece, so a part is held tight.Without a guide bushing, one of our customers is holding 0.0003" (0.0076 mm) roundness, cylindric-ity and diameter tolerance running around the clock, Garber said. MILLINGJUST BECAMEDYNAMIC! Trochoidal slottingand pocketing capability. Heavy duty core witha specialized flutedesign. Wide range of cornerradii available. Chip Breaker optionsavailable.Visit https:/ttps://www.kyocera-sgstool.com/products/h-coducts/h-carb-series-77arb-series-77to learn more!e!morAbsolute Machine Toolsctemag.com/cteguide.com25Swiss.indd 25 8/17/20 12:19 PM'