b'Give Threading a WhirlThe NewDrill designed to thread into bone.-n-TapThread whirling is important to manufacturers of im-plant screws, for which orders can range from 1,500 to 5,000 pieces or more per production run. Bone screws are being designed with more complex thread forms, Based on yearsincluding deep threads, multiple leads and unique of experience, wethread pitches. Inserts are designed and manufactured specifically for individual threads.have found that before tapping, its best to have a hole. In fact trying to tap without a hole can be. problematic.Sandvik CoromantAlthough similar to thread milling, thread whirling has inserts mounted on the inside of a cutting ring, or cutter holder, rather than on the outside of a milling tool. The thread whirling ring rotates around a cylindrical component to cut a thread in one pass.We know it is not always convenient toThread whirling can be used to produce worm gears change back and forth from a drill chuck toand of course standard 60-degree UN threads, as well a tapping attachment. as metric standard threads, said Scott Laprade, appli-This was the inspiration for our newcations supervisor at Westfield, Massachusetts-based TapmaticDrill-n-Tap . Now you can centerGenevieve Swiss Industries Inc., which does business drill, drill and tap using the tapping headas GenSwiss.for all three steps! The company specializes in tooling and accessories for Swiss-style machining and has expertise with thread Of course we dont mind if you just wantwhirling given its exclusivity to Swiss machines.to use it for tapping. GenSwiss has partnered with Utilis AG of Mllheim, Switzerland, since 2006, and the companies have See the video at worked to further the technology used in this machin-www.tapmatic.com ing process. Laprade said Utilis and GenSwiss intro-duced to the Swiss-turn industry thread whirling sys-tems that use up to 12 thread cutting inserts. The ad-dition of tooling with more cutters enabled users of whirling attachments to increase productivity over the 802 Clearwater Loop, Post Falls, Idaho 83854 conventional three- and six-insert systems that were [email protected] available at the time.Another company, Sandvik Coromant Co. in Fair Lawn, New Jersey, provides CoroMill 325 thread whirl-40JULY 2021Threading.indd 40 6/17/21 11:30 AM'