With 30 percent enhanced precision, performance and efficiency DMG MORI has set new standards with the fourth duoBLOCK® generation.
The extensive cooling measures, together with the top rigidity of the fourth generation of the duoBLOCK® concept, are the basis for the very highest demands on precision and machining performance. Cooled guideways and drives plus the optional spindle growth sensor ensure minimum thermal-related displacement of just 12 μm. Numerous features of the basic structure also promote the high long-term accuracy of the DMU 160 P 4th generation duoBLOCK®. These include large linear guideways in all axes and standard double wipers as well as the re-designed ball screw principle in the X- and Y-axes. In addition, the geometry of the Y-axis has been improved by means of an optimized fixator position. Fixation of the standard Magnescale measuring system in the Y-axis on a carbon plate has optimized the measuring accuracy Cont. on page 16 thus resulting in a more exact positioning accuracy of the table.
As the largest model in the series the DMU 160 P duoBLOCK® 4th generation has also been given a larger work area. This now measures 1,600 x 1,600 x 1,100mm. Table dimensions are Ø 1,600 x 1,250mm and the maximum workpiece weight has been increased to 4,500kg. Productive and dynamic 5-axis machining is effected with rapid traverses of up to 60m/min in all axes. The acceleration rates in the X, Y and Z-direction are 6 m/s², 4 m/s² and 7 m/s², respectively.
The modular concept of the DMU 160 P duoBLOCK® 4th generation offers an ideal solution for every application – starting with the innovative wheel magazine, which in its largest expansion stage can accommodate 453 tools (SK40/HSK63) and on to include the most extensive range of spindles to be found anywhere on the market. The offer here ranges from the powerMASTER® motor spindle with up to 1,000 Nm to the gear spindles with max. 1,800 Nm and on to include the speedMASTER® spindles with their impressive speeds of up to 30,000 rpm. The standard version of the DMU 160 P duoBLOCK® 4th generation comes equipped with a motor spindle that achieves a speed on 15,000 rpm and a torque of 200 Nm.
The 4th generation DMU 160 P duoBLOCK® appears completely revised in the joint design from DMG MORI, which embodies quality and value retention and offers functional added value in work ergonomics thanks to optimized accessibility. CELOS® is used for its control. This uniform appbased user interface with its unique multitouch screen is as simple to operate as a smartphone. As a result, users benefit from a 30 percent saving in setup time and 50 percent less effort for calculating technical values and searching for important information.
For more information, contact Retecon – Tel: (011) 976 8600.
The negative trade-offs produced by the use of titanium are the many problems uncounted for when machining this difficult-to-cut material. When used in metalworking industries, the word titanium normally relates not only to pure titanium but also to titanium alloys. In accordance with metallurgical properties, depended on the present elements, there are several groups of titanium: commercially pure titanium (unalloyed), α-, β-, α-β- and other alloys. It is sometimes stated that titanium machinability is similar to that of austenitic stainless steel. This proposition is more or less true if it relates to commercially pure titanium, although it is totally wrong with respect to treated α-β- and especially β-titanium alloys.
Cutting tool producers continue to place a greater emphasis on developing progressive tools for the efficient machining of titanium. Manufacturing titanium parts is a process with significant buy-tofly ratio, when a large amount of metal needs to be removed. The eventual weight of a finished titanium part may be only 10%, or less of the original weight of a workpiece. Frequently, these parts will have cavities, pockets and ribs that dictate milling as the main method for manufacturing. As a consequence, every new tool that is intended for the milling of titanium creates intense interest amongst the global technical community. Therefore, the latest products from ISCAR, an acknowledged innovator in the field, always attract the attention of the world’s manufacturers involved in machining titanium.
ISCAR recently introduced the Ti-TURBO family of solid carbide endmills in a diameter range of 6 to 20mm. The new family was designed for finishing operations and also for high-speed machining (HSM) of mainly slots, with the use of the trochoidal technique. Trochoidal milling features a small width and significant depth of cut, combined with a tool path dictated by a trochoid curve. Under such conditions the tool slices metal up at a high rate. An engagement angle here is small and produced chips are very thin. This results in dramatically decreasing the thermal load on the tool. Ti-TURBO endmills, of unique patent design, have 7 or 9 variable flutes with variable angular pitch (similar to the beneficial CHATTERFREE solid carbide tools) that ensures powerful resistance to vibration. That is why the new family is regarded to as a true turbo booster in the area of titanium milling.
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An optional lateral automatic scrap conveyor allows the removal of scrap pieces from the working area without the need to interrupt the cutting process. The sideways operation of the short conveyors allow for easy maintenance and trouble-free running.
The integrated capacitive distance sensor is capable of having the head follow height differences in the sheet even at the extreme high cutting speeds that can be achieved with the fiber laser technology, while state-of-the-art linear motors promote accuracy and increase productivity.
