There are now newly developed variants of the hydraulic Hydro-Pin tool holder to accommodate a wide selection of boring-bar shanks, many with their own location configurations. Benefits common to all include reduced setting times - by as much as 75% - and an up to 50% increase in cutter life due to the more secure, vibration-free grip.
In all formats, a paramount ambition of the design is the need to eliminate runout, with a guaranteed centre height at the insert tip being essential for successful precision machining. There is also guaranteed repeatability when changing like-for-like bars, and a simple, fool-proof fitting process. Being a hydraulic chuck, Hydro-Pin removes the need for reduction sleeves when securing the bar, facilitating anti-vibration damping and reducing opportunities for inaccuracy and bar deflection during the boring process.
The most common location format in proprietary systems features a ground angle on the back end (of the bar) locating against a stop pin at the base of the tool holder. This configuration ensures central positioning and orientation, with the bar then locked into the hydraulic chuck.Gewefa also supplies more bespoke variants, such as those required for the Coromant Easi-Fix boring-bar shank, which features a spring plunger mounted in the tool-holder body.
Gewefa offers the Hydro-Pin hydraulic chuck for Arno, System Dieterle, DTS/Hobe/MAS/Sumitomo/Sandvik/Simtek and Vargus screw orientation options, along with all other systems.
Partner company EWS, a specialist in driven tools, will be introducing an intelligent tool monitoring technique called CyberCon4, which oversees a range of processes within the tool in order to optimise its performance.
Elsewhere on the stand, German machine-tool accessory specialist OTT-Jakob will be featuring its latest all-in-one rotary union with monitoring function. The 2KA-ME union combines proven twin-channel technology for the hydraulic release, with integrated media transfer featuring the latest clamping condition sensor technology. Also featured from OTT-Jakob will be the Power Check spindle monitoring system.
Swiss speeder and angle-head specialist Pibomulti has a further addition to its Rainbow range of angle heads, namely a head able to clamp tool shanks up to 12 mm in diameter via a Gewefa hydraulic clamping system.
Heat-shrink clamping machine expert Rineck will be featuring tool holders and cutters from its range, while collet specialist Nann will show two of its latest developments: the MSK manually operated collet chuck; and a spindle unit range for use with draw-back collets, dead-length collets and expanding collets.
Finally, the newest partner, Fahrion, will be featuring products from its Precision Centro P Premium range of collet chucks.
