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The MAXXTURN 65 G2 has been completely redesigned. With its clever modular design, the machine offers a wide range of options for specific customer requirements. The high drive power of the main and counter spindles, combined with optimum torque characteristics, ensures economic efficiency in the machining of steel as well as in the high-speed machining of aluminium. 12 driven tools and a Y-axis ensure perfect results in complex milling and drilling operations. With numerous automation solutions and the EMCONNECT digital process assistant, the MAXXTURN 65 G2 is state-of-the-art and enables low-manpower production in operation.
Machine structure
The core of the machine is the 40° inclined bed. Designed as an extremely rigid and compact welded steel construction, it is the basis for a robust and precise lathe. Reinforcements provide additional rigidity in zones exposed to higher stress. As a further development of the MAXXTURN 65 G1, the machine impresses with its modern and innovative design. The optimised integration of the chip conveyor ensures compact dimensions. Instead of belt drives, spindle motors are used on the main and counter spindles, which ensures a particularly wide speed range of up to 5000 rpm and extremely good concentricity properties. Three main spindle sizes are available depending on customer requirements: Standard Ø 65mm / BigBore Ø 77mm / SuperBigBore Ø 95mm. A symmetrically designed headstock, together with temperature sensors at the bearing points and liquid cooling, ensure high thermal stability.
The C-axis is part of the basic machine equipment and allows the positioning of the spindle within a resolution of 0.001°. Due to the directly flanged encoder, the C-axis is ideally suited for contour-precise milling; a hydraulic holding brake (option) can be additionally activated. The Y-axis is also integrated in the basic machine structure and set at 90° to the X-axis. Extremely short projection lengths form the basis for solid turning and drilling operations as well as contour-free milling operations. Absolute measuring systems are installed in all linear axes - position dispersion as per VDI3441 in X/Y/Z: 0.0035/0.0035/0.004 µm as standard / 0.002/0.002/0.002 µm as an option, with glass scales and laser measurement.
Machine configurations
The MAXXTRURN 65 G2 has numerous modular options and is available in different versions:
• MT65 G2 M: incl. tool drive, C-axis and tailstock
• MT65 G2 MY: incl. tool drive, C-axis, Y-axis and tailstock
• MT65-G2 SM: incl. counter spindle, tool drive and C-axis
• MT65-G2 SMY: incl. counter spindle, tool drive, C-axis and Y-axis
On the MT65M-G2 with tailstock, the tailstock is mounted on the roller guide track and can be moved automatically over a length of 500 mm. A drag steady rest with Ø 8-101 mm is optionally available. This ensures even more flexible use of the machine, e.g. for shaft machining. On the MT65S-G2 with counter spindle, the counter spindle head is seated on its own roller guide track and can be moved automatically over a length of 580 mm. The spindle is driven by an integrated spindle motor (ISM) with liquid cooling. A stroke-monitored parts ejector, flooded with coolant, ensures safe removal of the finished parts. In addition, a 12-station VDI30 turret (optionally VDI 40) with single-motor technology is available. A servo motor powers the driven tools or the swivel movement - no lift-off and indexing with directional logic are the result. Each station can accommodate driven toolholders; alternatively, a 12-station BMT55 turret with direct drive, with up to 12000 rpm, or even a 16-station BMT45 turret can be integrated.
Control
The customer can choose between the SINUMERIK ONE or the FANUC 31i-B control system. The control panel on the MAXXTURN 65 G2 is height-adjustable on the right and can be swivelled, which ensures the best ergonomics. 22" multi-touch screens improve the view of individual control functions.
The optional digital process assistant EMCONNECT stands for connectivity and networking of the production environment and helps with the comprehensive integration of customer- and system-specific applications around the machine control and the production process. The user and his requirements are the focus of the operating procedures, work processes are to be made more efficient and the usual high reliability of the machines is to be maintained in all operating modes. EMCONNECT can be easily and quickly updated and configured, and the selection of available apps is constantly being expanded. For example, the Shopfloor Management app serves as an option for machine and production data acquisition, enabling comprehensive monitoring of all machines and organisation of processes in the production area. Apps for minimising downtimes are also available with EMCONNECT.
Automation
The EMCO SL1200, IRCO ILS-MUK 7012 or 10012, FMB TURBO 5-65 or 8-75 and TOP AUTOMAZIONI X-FILES bar feeders are available for efficient production. The EMCO gantry loader ensures fully automatic loading and unloading of the workpieces and seamless interaction between the machine tool and the loading device. If required, flexible ROBOT automation can also be offered.
Technical data
MAXXTURN 65 G2
Max. bar capacity [mm] Ø 65 (77 / 95)
Max. chuck size [mm]
Main spindle 250 (325)
Counter spindle 210
Max. speed [rpm]
Main spindle 5000 (4000 / 3500)
Counter spindle 7000
Driven tools VDI 30/40 5000 / 4500
Driven tools BMT 45/55 12000 / 12000
Max. drive power [kW]
Main spindle 29 (37)
Counter spindle 22
Driven tools VDI 30/40 6,7 / 6,7
Driven tools BMT 45/55 8 / 10
Max. travel X/Y/Z [mm] 260 / 80 (+/- 40) / 610
Rapid traverse speed X/Y/Z [m/min] 30 / 15 / 30
Number of tool holders 12 (16)
Number of driven stations 12 (16)
Related Glossary Terms
- chuck
chuck
Workholding device that affixes to a mill, lathe or drill-press spindle. It holds a tool or workpiece by one end, allowing it to be rotated. May also be fitted to the machine table to hold a workpiece. Two or more adjustable jaws actually hold the tool or part. May be actuated manually, pneumatically, hydraulically or electrically. See collet.
- coolant
coolant
Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.
- gang cutting ( milling)
gang cutting ( milling)
Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.
- lathe
lathe
Turning machine capable of sawing, milling, grinding, gear-cutting, drilling, reaming, boring, threading, facing, chamfering, grooving, knurling, spinning, parting, necking, taper-cutting, and cam- and eccentric-cutting, as well as step- and straight-turning. Comes in a variety of forms, ranging from manual to semiautomatic to fully automatic, with major types being engine lathes, turning and contouring lathes, turret lathes and numerical-control lathes. The engine lathe consists of a headstock and spindle, tailstock, bed, carriage (complete with apron) and cross slides. Features include gear- (speed) and feed-selector levers, toolpost, compound rest, lead screw and reversing lead screw, threading dial and rapid-traverse lever. Special lathe types include through-the-spindle, camshaft and crankshaft, brake drum and rotor, spinning and gun-barrel machines. Toolroom and bench lathes are used for precision work; the former for tool-and-die work and similar tasks, the latter for small workpieces (instruments, watches), normally without a power feed. Models are typically designated according to their “swing,” or the largest-diameter workpiece that can be rotated; bed length, or the distance between centers; and horsepower generated. See turning machine.
- milling
milling
Machining operation in which metal or other material is removed by applying power to a rotating cutter. In vertical milling, the cutting tool is mounted vertically on the spindle. In horizontal milling, the cutting tool is mounted horizontally, either directly on the spindle or on an arbor. Horizontal milling is further broken down into conventional milling, where the cutter rotates opposite the direction of feed, or “up” into the workpiece; and climb milling, where the cutter rotates in the direction of feed, or “down” into the workpiece. Milling operations include plane or surface milling, endmilling, facemilling, angle milling, form milling and profiling.
- modular design ( modular construction)
modular design ( modular construction)
Manufacturing of a product in subassemblies that permits fast and simple replacement of defective assemblies and tailoring of the product for different purposes. See interchangeable parts.
- rapid traverse
rapid traverse
Movement on a CNC mill or lathe that is from point to point at full speed but, usually, without linear interpolation.
- steady rest
steady rest
Supports long, thin or flexible work being turned on a lathe. Mounts on the bed’s ways and, unlike a follower rest, remains at the point where mounted. See follower rest.
- turning
turning
Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.
