Small modules in particular, which fit into multi-spindle machines, could previously only be produced with one cooling channel. The narrow width made it technically and economically impossible to drill or erode a second cooling channel. Arno Werkzeuge has now succeeded in producing a new parting-off module with a second cooling channel using the additive manufacturing process. The tool manufacturer is already offering the module in series production from stock at AMB 2018. Until now, it has not been possible to produce cut-off modules economically in series using 3D printing. The advantage of this new cut-off module is optimized cooling and the resulting increase in tool life.

Long turning tools for quick change

Cooling was not the only issue with the sliding headstock lathes. Time and again, customers came to Arno Werkzeuge and complained about the complicated tool changes in the small interior of a sliding headstock lathe. The mostly oil-smeared tools tended to fall off when changing, and too many screws had to be tightened. With the innovative -AFC sliding headstock turning system, only the head of the holder is changed, including the new cutting insert. Stability and easy handling were the main objectives here. The tool manufacturer is also presenting a new slide for sliding headstock turning systems: As coolant hoses in particular have to be screwed onto the new tools in a time-consuming process, they are a costly burden. The new slide from Arno Werkzeuge is designed in such a way that the cooling is not affected even when changing tools. The efficient -AFC solution sets new standards in the field of sliding headstock lathes.

Mini cutting insert with internal cooling

While the previous Arno-Mini system cooled the cutting edge through the cooling channel in the holder, the new cutting insert (image) enables even more direct and effective cooling. The coolant jet runs directly through the cutting insert. The tool manufacturer has developed two different variants to solve the challenge of chip jamming, especially in blind holes. The design of the cooling channel is located at different points in order to focus on chip transport or cutting edge cooling, depending on the application. For internal machining of small bores, this means that the chip is also flushed out deep in the bore and overheating of the cutting edge is almost impossible.

AMB, Hall 3, Stand D31