A story of people and innovations
The geographical proximity of FANUC Switzerland, based in Biel, proved highly advantageous for establishing close collaboration. "Our goal of penetrating international markets, in particular with the creation of our American subsidiary in 1994, also drove us to seek the services of a supplier with a global reach, like FANUC," adds Damien Wunderlin, Rollomatic Marketing and Sales Director. FANUC Switzerland has become more than a partner, it is at the heart and centre of Rollomatic machines. "Since I joined FANUC Switzerland in 1998, I have spent a great deal of my time with the Rollomatic design office," says Claude Amsler, who is responsible for the technical interface between FANUC Switzerland and Rollomatic. Built in 2002 by Rollomatic, the proximity of the Le Landeron production site, just twenty minutes from Biel, is very convenient for him. With this 12,000 m2 Lean Manufacturing production facility which employs 350 people from four continents and builds between 500 and 650 machines a year, today Rollomatic is THE global reference for high-precision sharpening and grinding. The Rollomatic GrindSmart® machines come complete with the VirtualGrind®Proprogramming software, the ShapeSmart® machine designed for cylindrical grinding is run by the ShapeSmart®Pro software and, for its part, the LaserSmart®Pro is supplied with the LaserSmart® models for laser machining. All these software programs are developed by Rollomatic. They are integrated into most of the FANUC 30i-B and 32i-B CNC systems equipping its ranges.
The pinnacle of precision…
Designed for small and large scale production runs of tools with diameters of between 1 mm and 32 mm, the GrindSmart®830XW pairs the ultimate in axis motorisation technologies with displacement guidance and automated tool and wheel loading technologies. With a reduced footprint (2,500 x 2,335 mm), its cast iron frame incorporates 6-axis kinematics on linear motors for the X, Y and Z axes and on torque motors for the rotary axes (A, B and C), all supplied by FANUC. Controlled by optical encoders with a resolution to within one millionth of a degree, the A and B axes feature a 240° stroke, allowing the automatic production of right- and left-handed helices. And the C axis can rotate at up to 1,000 rpm with the same control resolution. Managed by the FANUC 30i-B CNC system, an integrated measurement sensor enables the detection of any run-out on a tool. A Rollomatic VirtualGrind®Pro software module then automatically compensates for this by correlating the axis movements on the real tool axis. Although much more expensive to install, hydrostatic guidance of the linear axes under oil pressure has been adopted for its dual guarantee in terms of precision and dynamics. First and foremost, the hydrostatic system compensates for any axis tilt, however tiny it might be. In addition, the cooled lubrication oil used for this guidance, guarantees the near-perfect thermal stability of all movements. Controlled by an absolute rule with a resolution of 0.01 µm, the FANUC linear motors ensure extremely precise movements. Finally, the technological principle of the linear motors enables them to respond to commands from the FANUC CNC instantaneously, eliminating any mechanical inertia.