Schläfli Engineering AG was founded on March 28, 1990. Its core business is honing, whether it is design and construction of machines or developing processes that maximize the quality of small holes in terms of circularity, diameter, cylindricity and surface finish. These machines are perfectly adapted to the machining of matrices, nozzles, bushings, bearings, ferules, etc.
From left to right: Klaus Zaugg / Urs Rätz / Marlene Spätig / Therese Schläfli / Hans-Rudolf Schläfli / Walter Aeschlimann.
Wire-honing can be practiced on a wide range of materials of varying hardness, which extends from NiTi alloys to PCD (polycrystalline diamond) through hardened steel. The company offers solutions that allow machining inside diameters from 0.040 to 2,000 mm and outside diameters 0.500 to 8,000 mm. During all these years, Schläfli team succeeded in raising the original technology of the company in a good position on world market. The company makes available its many years of experience to its customers to develop in partnership the optimum machining process. It is based on this solid expertise that the company developed a brand new thread grinding machine for small bores.
Schläfli Engineering completes its products range by the Acuwire-S wire honing machine, a latest generation equipment for drilling of small bores. This model replaces the old FH-250 and FH-600 machines. The new acuwire S covers the range of these two machines, bringing together two machines in one machining! Wire-honing optimizes existing holes but it does not drill the holes. Today, this process (wire-honing / honing) allows to machine with a high accuracy series of holes that has been previously achieved by sintering, EDM wire, laser, ultrasound, etc., whose quality is insufficient. Grinding by wire allows a multitude of materials such as PCD, sapphire, ruby, technical ceramics, tungsten carbide, steel or medical alloys with a precision that can reach thousandth of a mm. Guaranteed by the process, the parameters are as follows:
- diameter
- circularity
- cylindricity
- concentricity
- and naturally surface finish. Tolerances of wire-honing Achievable tolerances depend mainly on the material to be machined and the compromise we want to achieve between productivity and quality. In principle, we can give the following tolerances values:
- Diameter 1 micron
- Circularity 0.5 micron
- Cylindricity 0.5 micron
- Concentricity 1 micron
- Surface finish 0.012 RA
Schläfli Engineering AG Bahnhofstrasse 22 CH-3294 Büren a/A www.schlafli.com
