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International Trade Fair for Die Casting: Technology, Processes, Products

18 - 20 January 2022 // Nuremberg, Germany

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Exhibitors & Products EUROGUSS 2020
Zoom Image LOGO_Application-oriented hydraulic chucks for greater cost-effectiveness

Application-oriented hydraulic chucks for greater cost-effectiveness

LOGO_Application-oriented hydraulic chucks for greater cost-effectiveness

Application-oriented hydraulic chucks for greater cost-effectiveness

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Until now, the brazed joint between the sleeve and tool body of hydraulic chucks has been a limiting factor, for example, in relation to chuck geometry, heat resistance, and torque transmission. Additive manufacturing makes it possible to manufacture chucks “from one mould”, creating a broader scope of application for hydraulic chuck technology.

This has sustainably pushed back the limits that previously existed for hydraulic chucks in relation to torque transmission, heat resistance, as well as process reliability. As a result, it is now possible to adapt the hydraulic chuck to the machining in such a way that a standard shank tool can be used. Therefore, the tool that is exposed to wear is used in the - more cost-effective – standard version. The chuck is designed specifically for the application, so that it is optimally adapted to the machining process, and all related requirements.

A milling operation using a solid carbide milling cutter and hydraulic chuck is a classic example of this. The defined dimensions of the standard chuck made it necessary to use an extra-long solid carbide milling cutter, in order to be able to reach and machine the contour to be milled. Using a special hydraulic chuck with a long, lean contour offers several benefits: The milling cutter in the short standard design is far less expensive; the short shank length allows milling with far higher cutting rates; and the surface quality is improved thanks to the reduction in vibration. Overall, the new design achieves a longer tool life.

Longer, leaner, more stable - at MAPAL, these are the key components of the current approach for adapting hydraulic chucks, the factors most emphasis is placed on. In addition, working alongside customers, a wide range of other unique challenges have been solved, in ways that would have been inconceivable just a few years ago.

Example 1

Integrated radial adjustment in the collar for use on high-productivity machines to ensure length adjustment that is precise, as well as simple and fast. A clear advantage over shrink chucks.

Example 2

High-precision inward and outward-acting hydraulic clamping system, for machining the plate spring seat and blind bore for the valve seat ring and valve guide of an aluminium cylinder head. Tools for either operation can be replaced separately from one another and from the tool body, according to the amount of wear they have sustained.

Example 3

Tool chuck with integrated coolant circuit – an internal air supply via the spindle – for friction stir welding. During friction stir welding with high process temperatures, the entire system remains stable.


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