displacement and potential damage to the tap or MQL adjusting screw. "The Heli-Coil helps protect the components, especially carbide taps, from movement after setting length and then tightening the collet nut,” said David Ridenour, OEM sales and tool holder product manager for Emuge. The new modular bodies are available in KSN1 ER20 and KSN3 ER32. In recent years, Emuge also has added the KSN5 and KSN6 Softsynchro tap holders, which it says are the largest in the industry. Ridenour said those have filled an increas- ingly important need for larger taps in the oil industry, power generation and wind turbine applications, as well as in the production of large diesel, locomotive and ship engines. The KSN5 series is for tap sizes M16 to M56 and ANSI sizes
to 1 ¾" (45 mm). The KSN6 series is for sizes M24 to M76, and will accommodate tap sizes 1 through 2 ½" (25.4–63.5 mm) with adaptors.
On the Smaller Side
Meanwhile, Rego-Fix (Indianapolis, IN) is taking its Swiss precision toolholding to new levels of small with its slimmest toolholder in its popular powRgrip press-fit system, the slim- nose powRgrip 6 toolholder, or PG6. Launched last year, the PG6 is especially well suited for the
aerospace, automotive, medical and watch industries. It has a minimal outside diameter of 0.4" (10 mm), as well as a clamping diameter ranging from 0.008 to 0.125" (0.2–3.175 mm). Because of its slim design, the PG6 provides less tool interference, easily machines tight pockets and delivers high levels of productivity. When paired with the expanded line of HSK 40 E holders, the PG6 enhances the capabilities of the company’s exist- ing powRgrip toolholding system, which offers better TIR, improved tool dampening, easy presetting, longer tool life and unparalleled clamping forces.
Along with PG 6, REGO-FIX has introduced secuRgrip to deal with the most demanding cutting applications. Most importantly, said Dave McHenry, Technical Product Engineer, Rego-Fix, “Everybody who uses a Weldon flat cutting tool can use the new secuRgrip holder. There’s no proprietary cutting tool necessary. We’re taking an old standard and we’re giving it new life.” The grip, McHenry said, is tighter and more se- cure than that achieved with methods such as heat shrink. So while shrink-fit toolholders achieve 3 microns of accuracy,
McHenry said, that grip often isn’t maintained. The secuRgrip and all other PG holders will not lose accuracy or clamping force and it comes with a five-year or 20,000-cycle warranty.
Rego-Fix achieves this grip with the secuRgrip holder by locking the cutting tool to the collet with threading. And as with all other PG holders, the connection of holder compo- nents is also naturally damping because the various compo- nents are made from different types of steel, which result in improved harmonics that eliminate self-exciting vibrations.
Rego-Fix now offers its slimmest toolholder in its popular powRgrip press-fit system, the slim-nose powRgrip 6 toolholder, or PG6.
Once that assembly is pressed in, a special cap nut covers over the collet, further locking the cutter in place. “There’s nowhere for anything to move, and the cutter itself will break first—that’s the only form of failure that’s pos- sible,” McHenry said. ME
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