Metav 2016 – New machine tools Compact Machines for a Broad Range of Uses

Author / Editor: Bernhard Reichenbach / Rüdiger Kroh

Machine tool manufacturers are represented at the Metav 2016 in Düsseldorf with interesting ready-to-use solutions. Among their plus points are faster throughput times, lower piece costs and higher workpiece quality.

Gear cutting solution on the M35 Millturn turning/drilling/milling centre: the Invomilling milling tool by Sandvik Coromant enables milling of straight and angled external gears.
Gear cutting solution on the M35 Millturn turning/drilling/milling centre: the Invomilling milling tool by Sandvik Coromant enables milling of straight and angled external gears.
(Photo: WFL)

They are not only especially flexible, productive, user-friendly and space-saving, but also set up for high production quality – the new machine tools presented at the Metav 2016 in Düsseldorf. The positive characteristics of the machines are said to be equally obvious, whether in processing simple or complex, small or large workpieces in easy or difficult working materials.

Great versatility, for example, is shown by an exhibit with which Index intends to replace their cam-controlled automatic multi-spindle turning machines for bar diameters up to 22 mm: the Index MS16 Plus extension variant from the Multiline range. This modular CNC six-spindle machine is to replace the cam multi-spindle devices which are still much used, but complicated to set up and still dominating the market today in processing parts of low and medium complexity.

Gallery

According to the maker, the advantage of the MS16 Plus is that it combines the speed of a cam machine with the flexibility of CNC technology and, thanks to its compact dimensions (1300 mm wide), is also satisfied with the small base area of the previous multi-spindle machines. In addition, it offers high operator comfort during setting up as well as enhanced production options compared to cam machines. It can use all processes which are possible on turning centres, automatic or not, including turning, boring, milling, cutting, deep-hole boring or shaping. With driven tools and additional units, all of which can be set up on all carriages as well as on the C axes of the working spindles, further production possibilities, such as eccentric drilling or thread cutting without compensation chuck, angular and transverse drilling, contour grinding/gear hobbing and polygonal turning, are possible, we are told.

Efficient power packet for large parts

Hommel Unverzagt presents the new NTRX-300 turning/milling centre by the Japanese manufacturer Nakamura-Tome. This is said to remove all obstacles to producing complex parts economically and on time in fields such as drive technology, optics or general machine construction. According to the supplier, the user profits from reduced piece costs, raised workpiece quality and faster order completion times. Because of its strong construction and a distance of 1350 mm between the spindle noses, the NTRX-300 is said to be especially suitable for complete processing of large parts with a maximum turning diameter of 640 mm and a maximum turning length of 1150 mm. At the same time, this 17 t machine, occupying a space of 4400 mm × 2670 mm, is very compact. For the efficient processing of even hard-to-machine parts, two spindles with a maximum rotating speed of 3500 min-1 are available.

Haas is represented in Düsseldorf by the DM-1 vertical high-speed drilling/milling centre. The SK40 spindle with in-line direct drive turns at 15,000 min-1 and enables synchronised high-speed tapping with reverse speeds up to four times higher, the firm emphasises. The direct coupling of the spindle with the drive motor furthermore reduces heat dissipation, improves power transmission and leads to very good surface quality, we are told. The 11.2 kW vector drive delivers a maximum processing torque of 62 Nm for milling and boring. This processing centre with an X/Y/Z working area of 508 mm/406 mm/394 mm offers feed rates up to 30.5 m/min for milling. High-speed feeds of 61 m/min in combination with high acceleration values are set to shorten the processing cycles and raise throughput. The side-mounted tool changer, with 18 + 1 magazine places, provides fast tool changing, which reduces downtimes.

Four different gear cutting processes

A première in the field of versatile standard processing centres is celebrated at the Hüller Hille GmbH, a member of the FFG Europe Group: the NBH P 80 is the first model of a range planned as a joint development within the group. With a robust construction, high-quality components and practice-related configurational possibilities, users should now be able to profit in the standard field, too, from the strengths of the machine, as FFG explains. The generous working space (X/Y/Z: 800 mm/800 mm/900 mm) with extended Z axis is also said to provide sufficient space for large parts and jigs, even when working with long tools. This machine, with a floor footprint of 16.5 m2, high-speed feeds of up to 60 m/min and an acceleration of 7 m/s2, is said to satisfy even demanding requirements regarding dynamics. A selection of spindles, precise and dynamic rotary tables and also control units provide flexibility.

Gear cutting technology is among the fair highlights at WFL Millturn Technologies. The M35 Millturn turning/drilling/milling centre carries out, we are told, four different gear cutting processes. This apparently opens up new possibilities for the user to employ the machine even more efficiently. Various modules, adapted to the application area in question, are available: for hobbing, shaping or gear milling.

Gallery

Networked production

Another topic with WFL is the project Industry 4.0, in which the various production systems, resources, raw and finished goods, as well as purchasing and distribution, are all networked with each other and can communicate. Besides programming the workpieces, simulation production and also fast service are part of this topic, as the Austrian firm emphasises. If needed, the Millturn machines can transfer operating, tool and process data to a higher-level software system for implementation. If desired, this data can be transferred via bus or network systems using simple codes. The evaluation and linking of the data is said to make production even more efficient.

At the Metav, F. Zimmermann provides information on the FZ33 compact extended portal milling machine, whose Y axis now traverses 4000 mm, the Z axis up to 1500 mm. The system was conceived for processing small and medium-sized components for the auto and aerospace industries, for tool and mould construction, and for numerous special applications, the maker says. Thanks to its high power and strength, fast and economical five-axis processing of components in steel, cast iron, aluminium and composite materials is possible. For these machines, different milling heads are available, for example the VH30, optionally supplied with a more powerful spindle. As a result, users can draw on 70 kW and a torque of 167 Nm. The package includes the HSK-A100 tool holder. MM

* Dr. Bernhard Reichenbach is a freelance specialist journalist in 69207 Sandhausen, Tel. (0 62 24) 5 37 03, breichenbach@gmx.de

(ID:43781918)