Traub Drehmaschinen GmbH & Co. KG is introducing two new versions of a sliding headstock automatic lathe. During the development process the focus was on innovative technology and comprehensive machining options as well as a variant with a very attractive price/performance ratio. The TNL18P variant delivers maximum productivity. It is optimally tailored to the production requirements of the customer, both in terms of the mechanical system and control technology. The enhanced TNL18 variant is equipped with a few more features than the P variant.
Simple changeover of the guide bush With a few manipulations, the lathe can be used with and without a guide bush for long or short parts. The extremely long Z-travel distance of the headstock ensures the proper positioning of the main spindle, either for turning with a guide bush or without. In the standard design, the powerful main spindle is equipped with a C-axis and provided with either a direct drive with high dynamic response or a belt drive (TNL18P). It delivers high torques in order to achieve large cutting volumes.
For complete and complex machining operations Simultaneous machining with multiple tools ensures high productivity levels by both machines. In this process, up to three tools are used simultaneously on two spindles. The TNL18P production machine differs from the TNL18 variant in that the Y-axis motion of the upper turret is mapped by interpolation of the X/C/H axes. This allows milling contours to be created by entering values in the standard Cartesian X/Y/Z coordinate system. Reliable off-center, axially parallel drilling is thus also possible using this method. A powerful, swiveling sub-spindle is fitted onto an X/Y/Z cross-slide, which simultaneously also carries the bottom tool turret. This slide is characterized by large axis travel distances. The travel for three-axis reverse side machining, even for geometrically complex workpieces, can be freely configured.
Ingenious reverse side machining Both the TNL18 and the TNL18P feature the extremely solid backworking attachment that is typical on Traub machines. It accommodates 7 tool holders of which three can be driven. In total 4 stations are provided with an internal coolant supply. Each station can be controlled individually so that cutting oil is supplied selectively. The large travel distances of the sub-spindles enable stations to be occupied by more than one tool (e.g., dual drill holder). A new innovation is the refined drive scheme for the utilized tool holder, which delivers either high speeds or a high torque. The integrated workpiece removal allows the workpiece to be rinsed out or, optionally, picked up and deposited for positioning purposes.
Improved tool receptacles Both variants make use of the new Traub compact shaft system: an improved system for high-precision mounting of tool holders in the turret. The tool holders are seated deeper in the turret, which results in less leverage effect and, thus, higher stiffness. For driven tool holders, the large shaft diameter enables insertion of roller bearings with large diameters. A quick-change system enables high-precision, smooth exchange of tools without removing the tool holder. The compact shaft system increases the tool life demonstrably and also contributes to improved surface quality.
The new TNL 18 will be shown at Siams on the Springmann Booth.
Traub Drehmaschinen GmbH & Co. KG www.index-werke.de
Springmann SA Route des Falaises 110 - Case postale - CH-2008 Neuchatel Tel. +41 32 729 11 22 - Fax + 41 32 725 01 01 www.springmann.com - [email protected]
