As well as showcasing two new-to-the-UK Walter Helitronic tool grinders – the Helitronic Mini Plus and the Helitronic G 200 – Walter Ewag UK’s open house (Warwick, June 27-29) will host daily series of workshops/demonstrations of some of Walter’s money-saving and user-friendly technologies for fast and effective tool production and regrinding, as well as inspection.

The three-day event will highlight: rewards of integrated measuring; benefits of non-contact laser contour checking; remote service; and how Helitronic Tool Studio software can simplify and speed up grinding/erosion times.

Walter heralded a step change in the fully automatic measurement and digitisation of tools when it launched the Walter 3D laser sensor, which enables the Walter Helicheck Pro and Plus tool measurement machines to scan with four times the resolution than previously possible and to process that data four times faster.

Suitable for inspecting high-performance tools where cutting edge geometry, pitch and spiral pitch vary widely, the 3D sensor can replace two separate machines traditionally used for measuring such tools – perhaps a combination of conventional and laser checking. Easily and quickly programmed using wizard routines, with resulting short set-up times, the 3D sensor effectively ‘visualises’ the workpiece as a point cloud (in differing formats) and enables various measurements to be undertaken on the 3D image.

When the resulting image is ‘placed’ on the tool’s three-dimensional design drawings, or a master part, any deviations are clearly visible (via the integrated 3D Viewer) as 3D comparisons of point cloud and target model, including surface reconstruction.
The result is that tool measurement has never been more accurate or faster, reports the company.
To register call Phil Morris on 01926 485047, 07714 826832

With the introduction of the Euro 7 emission standard, the particulate matter values for all new motor vehicles are set for drastic reductions, regardless of the type of drive. This means that the focus is also increasingly on brake systems. The solution is brake discs with low-wear hard coatings, because less wear means less particulate matter. Against this background, Nagel Maschinen- und Werkzeugfabrik GmbH in Nürtingen is expanding its portfolio to include systems for brake disc coating.

The core module for applying hard coatings to brake discs – usually cast brake discs – is a laser cell, which operates according to the high-speed LMD process, and a double-sided surface grinding machine for finishing. The laser coating machine from Nagel allows workpiece changeover times of less than 2 seconds, meaning that the powder flow, which is fundamentally sensitive to pressure fluctuations and acceleration, does not require interruption. The company measured powder efficiencies of over 94% in the coating process.

Nagel uses a double-sided surface grinding machine with high rigidity, ensuring highly precise and reproducible machining. The machine processes brake discs with an outer diameter of up to 450 mm. Depending on the coating system and customer requirements, Nagel Group says it has the right solution. For example, it is possible to grind a typical mid-range brake disc on both sides in approximately 50 seconds. Where required, a specially developed non-contact air measurement system monitors the machining process in operation.

In addition to process development for a wide range of hard material coatings, including grinding, Nagel will soon also be offering options for the production of coated brake discs for homologation at its Nürtingen plant.
For further information www.nagel.com