Gewefa will be focusing on its hydraulic toolholding capability at the AMB Exhibition in Stuttgart, Germany, while taking the opportunity to introduce its latest development: the Grindtec hydraulic chuck with zero radial adjustment capability.
Gewefa offers a range of standard and special purpose hydraulic toolholders, with the Grindtec hydro chuck introduction extending the range into applications for bespoke tool grinding machines.
A key feature is an adjustment mechanism that enables compensation of the run out at the tip of the (clamped) cutter to zero tolerance, eliminating run out errors between the tool tip and the spindle. This is achieved by adjusting three screws located in a ring fitted around the toolholder body. The cutter shank is therefore slightly ‘fine-tuned’ to achieve zero accuracy of its position at a distance 100mm from the ring.
Also featured will be the recently introduced Gewefa ‘HydroPin’ single point boring bar toolholder, which utilises the tool grip features of a hydraulic chuck with the added advantage of guaranteeing fixed orientation when positioning the bar.
Shell mill adaptors with a hydraulic spigot location will also be featured alongside Gewefa’s VDI hydraulic chuck range which feature a clamping tool holding system and are suited to both turning and boring applications offering the user a range of machining advantages.
The key to the clamping system’s success is its high level of stability with anti-vibration features inherent within the hydraulic clamping mechanism producing not only quieter cutting performance and improved finish but also enabling significant increases in speeds and feeds to shorten machining times.
Insert life is improved with 50% savings on inserts regularly reported, resulting not just in cost savings but in reduced machine downtime.
The Gewefa ‘Securlok’ toolholder will also be featured. This is a hydraulic chuck that, with the addition of a failsafe second mechanical side clamping mechanism, provides 100% tool shank and process security.
For general and heavy-duty milling operations in titanium, composites and ISO S rated materials often used in airframe manufacture, Securlok withstands radial and axial forces on the cutting tool – forces that are likely to create conditions with the potential for the cutter to slip or pull out. It also offers high concentricity levels – within 0.003mm TIR maximum – and anti-vibration dampening ensures longer cutter life. The unit is completely sealed to prevent swarf or coolant ingress.
Gewefa can be found at Hall 2, Stand B20 at AMB Exhibition from 13-17 September 2016.
Gewefa www.gewefa.co.uk
