If you want to produce high-precision profile inserts, your tapered diamond grinding wheels need to be dressed on a regular basis. Haas opts for the profile accuracy
of the XING dressing technique inside
the machine.
Based in Trossingen, Swabia, Haas Schleifmaschinen GmbH has many customers who manufacture profile inserts, all of whom value maximum dimensional accuracy and surface quality. The Multigrind® CU and Multigrind® CA are the grinding machines most frequently used. The grinding tool of choice when it comes to machining profile inserts is often the tapered or V-shaped diamond grinding wheel, which has to be dressed — i.e. brought into the correct geometric form — on a regular basis to ensure exceptional grinding results.
But the extremely precise tapered diamond grinding wheels often feature an edge radius of just a few hundredths of a millimeter and are correspondingly sensitive, which is why Haas opts for the XING dressing technique. The dresser wheel axis isn’t positioned parallel to the grinding wheel axis, as it is with other techniques, but rather at a 90° angle, meaning the silicon carbide or corundum wheel often associated with other diamond grinding wheels can be used for dressing. Thanks to the NC-controlled process, the radius of the grinding wheel can be generated with the circumference of the dresser wheel, thus maintaining a consistent contact surface and pressure between dresser wheel and grinding wheel. The benefits of XING dressing include a lower pressure load and higher profile accuracy for the grinding wheel.
As with other dressing techniques at Haas, XING dressing is also carried out inside the grinding machine, so there’s no need to unclamp and re-chuck the grinding wheel. That has a positive effect on dimensional accuracy, while the grinding wheel boasts better radial and axial runout, making it possible to generate better surfaces. Due to the very good results with XING dressing, this technique will be expanded for use in additional applications at Haas.
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