In spite of having the smallest footprint in its market environment, the NTX 1000 2nd Generation has a large working area for high productive machining with B-axis and additional bottom turret.
As well as the compactness and large working areas that have been mentioned, the NTX 1000 2nd Generation has many other design highlights. These include the integration of unique original technologies such as DDM (direct drive in the B-axis) and BMT (high-end turret with integrated direct drive of the tools for unique milling performance). "The new development also has a comprehensive package of measures for preventing the temperature from influencing the accuracy of the machining", adds Harry Junger. The cooling of the ball-thread drive (including nuts) and the cutting and milling spindles of the B-axis and the BMT turret are particularly worth mentioning.
In order to be able to fulfil all customer requirements in a customised way, the NTX 1000 2nd Generation is also available on the basis of a comprehensive high-tech construction kit with different configuration levels. Here, the diversity of variants ranges from the chucker with turning-milling spindle to a version with additional tailstock/sleeve combination to the development stage with counter-spindle and additional bottom turret. In accordance with its series production characteristics, it is also possible to machine from the bar with the NTX 1000 2nd Generation, which has a bar capacity of 52 mm or 65 mm (optional). The portfolio also includes various automation options such as gantry loaders or component handling using robots.
Harry Junger sums it up in a nutshell: "In view of all of the options, the NTX 1000 2nd Generation is the optimum machining solution in the series production area for geometrically demanding workpieces with maximum precision." And this in turn makes this new development the undisputed "best in class" manufacturing tool in medical engineering, aerospace, the watchmaking industry and the electronics industry.
CTX beta 800 TC: Turn & Mill complete machining with the compactMASTER ultra-compact turning-milling spindle
DMG MORI has expanded the successful CTX TC series with the new CTX beta 800 TC. Its automatic tool changer provides maximum flexibility in classical turning operations involving workpieces up to Ø 500 x 800 mm. As far as Harry Junger is concerned, the highlight of the CTX beta 800 TC is the turning-milling spindle: "The Y stroke of 200 mm and the new compactMASTER ultra-compact turning-milling spindle open up a wide range of applications to users of the Turn & Mill complete machining to the extent of 5-axis simultaneous machining". The compact design of this spindle with integrated release cylinder for the tool clamp makes it possible to have torque of 120 Nm with an impressive length of just 350 mm. In comparison with a conventional spindle the increase in work area is 170 mm, with 20 percent more torque at the same time. The B-axis is also equipped with a direct drive, which makes highly dynamic machining possible with a swivel range of ±110° and rapid traverse speeds of 70 rpm.
For complex milling operations right through to 5-axis simultaneous machining, the new HSK-A63 (optionally Capto C6) compactMASTER turning-milling spindle has performance data of 12,000 rpm, 120 Nm and 22 kW. A 20,000 rpm high-speed version is also available as an option. Harry Junger states the following with regard to the different expansion options: “Our high-tech modular building block system allows customers to equip the machine individually in line with their particular range of components. Among other things, this includes different tool magazines with a capacity of up to 80 pockets rather than the 24 in the standard.
In the standard version the machine has a main spindle, designed as a liquid-cooled integral spindle motor (ISM76) with 380 Nm and 34 kW or optionally as ISM102 with 770 Nm and 38 kW, and an NC-controlled tailstock. The machine can also be equipped with a counter-spindle instead of the tailstock for 6-sided complete machining. The ISM52 PLUS with 6000 rpm and 170 Nm is provided for this purpose. Chucks up to 400 mm diameter can be used on the machine in conjunction with the ISM102 spindle motor. "Steady rests, that are available for workpiece diameters of up to 200 mm, are recommended for the machining of long workpieces" adds Harry Junker.
The sturdy travelling column design stems from the larger CTX beta 1250 TC and has long since demonstrated its quality. Maximum stability and accuracy are achieved by means of combining with the direct measuring systems in all axes of the travelling column. The machine concept also has impressive ergonomics: Whereas the CTX beta 800 TC has a large work area, its advantages with regard to accessibility and space requirement are also remarkable. The 350 mm distance from the front of the machine to the centre of the spindle is the ideal prerequisite for easy loading and unloading. The footprint is just 8.5 m² or 10.7 m² including chip conveyor.