THIELENHAUS TECHNOLOGIES GmbH collaborated with machine-tool manufacturer Nissei to develop a coste-effective, compact double-disc grinding machine. The most frequently machined flat workpieces include piston rings, bearing rings, pump blades and impellers, valve plates, connecting rods, clutch discs and brake discs for cars, motorbikes, and bicycles. Other parts include precision discs, punched, fine-blanked and sintered parts of all sorts. The parts are usually made from steel, cast iron, carbide, special alloys or ceramic.
The new machine is designed to be purely functional, practical features. The focus is on a high degree of rigidity: closed-box frames instead of a C-frame, single-piece forged main spindles with integral GW mounting flange, clever positioning of spindle tilting mechanism, and a double-walled cast-iron frame design for temperature resistance and stability. Other highlights include the quill-slide feed system in conjunction with a worm gear, the associated patented pneumatic compensation for backlash compensation, and super-precision bearings in the ABEC-7 class. Effective standards, such as an automatic tool-wear compensation system for the lower grinding disc by means of in-process measurement, are also integrated, of course.
User-friendliness is another important aspect: a swing-out housing for the rotary carrier, unique in the industry, allows the operator to change the grinding discs easily through the large front opening just a few seconds after the spindles have come to a stop. With a portable wheel-changing aid this can be done in minutes. Depending on the tolerances to be achieved, workpieces can be machined using a rotary carrier throughfeed or carrier oscillation with infeed process. For the tightest component tolerances, the workpieces can also be planetary-driven between plunge-feed grinding discs. Learn more at www.thielenhaus.us