Vertical Machining Centers
Take a look at the advantages of affordable flexibility now being offered in the newest vertical machining centers.
Posted: June 4, 2015
A separate ATC door makes tool changing seamless without interrupting the machining process. The table moves only in Y, while the spindle moves in X and Z, therefore enabling a smaller machine footprint, rapid feed rates, precise cutting and flawless surface finishes. Coupled with a user-friendly design and energy-saving technology, the GENOS M560-V truly delivers affordable excellence. Thermo-Friendly Concept is standard on this machine. Pretension ball screws and bi-directional spindle cooling allow for better control of the machining process. Optional Collision Avoidance and Machining Navi Intelligent Technologies are available. Equipped with the THINC®-OSP P300M control, when connected to the Internet the machine can easily connect to the Okuma App Store, www.myokuma.com, where users will find a variety of productivity enhancing machine tool apps.
Key Specifications of the GENOS M560-V vertical machining center:
Max Machining Volume mm (in) 1,050 x 560 x 460 (41.34 x 22.05 x 18.11)
Table Size mm (in) 560 x 1,300 (22.05 x 51.18)
Max. Load Capacity kg (lb) 900 (1,980)
Spindle Speed min⁻¹ 15,000
Spindle Motor Power kW (hp) 22/18.5 (30/ 25)
Rapid Traverse m/min (ipm) X-Y 40, Z: 32 (X-Y: 1,575, Z: 1,262)
Magazine Capacity 32 Tools
Okuma’s new MU-8000V vertical machining center is excellent for 5-axis multi-sided machining. Standard ball-screw cooling and a highly rigid left-right, mobile trunnion table support high precision and power. The low center of gravity in workpiece movement gives this machine the ability to machine difficult materials and a wide range of workpieces. This workhorse is available with a standard No. 40 or 50 spindle, providing a configuration for nearly any 5-axis job. An in-machine coil chip conveyor allows for safe, reliable chip discharge. Close proximity of the spindle and control panel in addition to easy access to the workpiece give this machine superior operator functionality.
Maximum productivity is achieved with a wide array of automation options. The unique design places the pallet changes at the back of the machine, allowing easy connection to a PALLETACE flexible manufacturing system, pallet pool, large capacity ATC and robots to deliver high productivity in addition to high accuracy. The MU-8000V can be equipped with the exclusive Super-NURBS function, enabling high feed rates and ultra-fine finishes. Optional Machining Navi monitors cutting conditions and displays optimal spindle speed to eliminate chatter. 5-Axis Auto Tuning achieves higher accuracies by automatically measuring and correcting machine misalignments in minutes. Thermo-Friendly Concept and Collision Avoidance System are standard Intelligent Technologies to ensure this 5-axis machining center performs consistently from the first part to the last, regardless of warm up time or ambient temperatures and the machine is protected from potentially harmful crashes.
Key features of the MU-8000V:
Axis Travels X/Y/Z mm (in) 1,450/ 1,050/ 600 (57/ 41.3/ 23.6)
C-Axis degrees 360 infinite
Rapid Traverse m/min (ipm) X, Y, Z: 50 (1,969)
Rapid A/C rpm 30/90
Maximum Load kg (lb) 700 (1,540)
The new MU-6300V vertical machining center is excellent for 5-axis multi-sided machining and well suited for the aerospace and die/mold industries. This versatile machine is available with a wide array of spindle options, providing a configuration for nearly any 5-axis job. The unique design places the pallet changes at the back of the machine, allowing easy connection to a PALLETACE flexible manufacturing system or pallet pool, delivering high productivity in addition to high accuracy. The MU-6300V has a highly rigid and accurate double column structure and low center of gravity in workpiece movement (trunnion table) that enables both heavy-duty cutting and high-speed finishing. It can be equipped with the exclusive Super-NURBS function for high feed rates and ultra-fine finishes that reduces the need for hand polishing molds and increases productivity. Built using the Thermo-Friendly Concept, this 5-axis machining center performs consistently from the first part to the last, regardless of warm up time or ambient temperatures.
Key features of the MU-6300V:
Axis Travels X/Y/Z mm (in) 1,450/ 1,050/ 600 (57/ 41.3/ 23.6)
C-Axis degrees 360 infinite
Rapid Traverse m/min (ipm) X, Y, Z: 50 (1,968)
Rapid A/C rpm 30/ 90
Maximum Load kg (lb) 600 (1,320)
The new MILLAC 852V II vertical machining center represents the pinnacle of large machining centers with high rigidity, heavy cutting ability and high operability. Its strong base column construction has optimally-placed ribs to counter chatter and twisting during heavy-duty cutting. Traditional box ways are used for all axes to provide high accuracy and rigidity over the long term. With the use of variable speed gear head and large-diameter spindle bearings, this vertical machining center can perform heavy-duty cutting and high speed machining with high torque from low to high speeds. The X, Y, Z travels and large table designed to withstand heavy loads are well suited for machining large, heavy work pieces.
Key features of the MILLAC 852V II:
Max. Load Capacity kg (lb) 3,800 (8,360)
Axis Travels (X/Y/Z) mm (in) 3,050/ 850/ 750 (120.79/ 33.46/ 29.53)
Rapid Traverse m/min (ipm) X/Y: 12 (472), Z: 16 (630)
Spindle Speed min-1 6,000 Cat 50 Big Plus
Max. Spindle Torque Nm (ft-lb) 481/ 390 (355/ 288) 30 min/cont.
Okuma America Corporation, 11900 Westhall Drive, Charlotte, NC 28278, 704-588-7000, Fax: 704-588-6503, www.okuma.com.
VERSATILE AUTOMATION FOR HIGH VOLUME COMPLEXITY
Absolute Machine Tools, Inc. (Lorain, OH) announces the brand new FV Series vertical machining centers by Tongtai (formerly the OEM for Hitachi-Seiki, Japan). These versatile and flexible machines are built in both single-spindle and twin-spindle head designs for mass production lines of complicated workpieces in automotive, appliance, electronics, and energy industries. Machines in this series are also suitable for automatic production with the integration of a robot on either a floor-type motion axis rail system or overhead gantry. The fixed twin-spindle type is able to process two individual machining tasks simultaneously. With the addition of an A-axis trunnion table, the FV series instantly becomes a horizontal machining center, offering two machines in one, reducing floor space and additional machinery costs.
The automatic pallet changer (APC), standard on all machines, can change pallets as fast as 4 seconds. The APC is built with triple-point clamping and supporting, providing superior pallet stability and high quality part surface finishes. The gear is a planetary type that is preferred over a worm-gear type APC because it allows for better position accuracy, zero backlash, long-term durability, and noticeable reduction in overall shop noise. The APC is driven by servo motors rather than by the traditional hydraulic-driven method to save energy and maintenance costs. Optional built-in tilt rotary tables or built-in tilt fixtures turn this machine into a 5-sided or 5-axis machining center. The C-axis rotary table option has a table size of 350 mm for single-spindle or 220 mm for twin-spindle models, both with a 360 deg stroke. The A-axis trunnion rotary table design has a stroke of -30 deg to 180 deg for both single and twin models.
The automatic tool changer has a built-in tool carousel. According to the tool’s position, the FV series is able to determine whether to move the spindle or the tool magazine to shorten tool change time. Tool capacity is 24 for single-spindle or 48 for twin-type with an 84-tool magazine as an option. Tool to tool change time, whether retrieved by the spindle or the magazine, is a speedy 1.2 seconds. A coolant-thru spindle system is optional as are various chip conveyors to accommodate different materials and chip sizes.
The Tongtai Intelligent Manufacturing System (TIMS) is among the newest technologies available in the machine tool industry. Developed by Tongtai and partnering with FANUC, this system includes four basic management functions for any size manufacturing company to improve productivity and accuracy, facilitate part production, and provide machine tool protection and maintenance assistance. The Production Management System monitors cutting loads, checks pallet change functions, records alarm messages, and assists in troubleshooting and maintenance support. The Intelligent Management System performs motor load monitoring, implements machining adaptive control for protecting tooling and ensuring cutting efficiency, and provides crash protection for real time detection of servo loads during feeding.
Tool Management records machining dates, times, and usage for tool life tracking and management, tool compensation, and tool overload protection. The fourth management function is Workpiece Management, which incorporates software using a built-in CCD camera to monitor the characteristics of a particular workpiece and will calculate and compensate program coordinates for maximizing machining precision. The key specifications include 1-G rapid traverse rates in X/Y/Z for both single and twin-spindle models of 75 m/min and 50/100 rpms in both A and C axes. Travels for the single-spindle type are 710/ 460/ 460 mm in X, Y, and Z, and for the twin-type model are 300/ 460/ 460 mm.
Absolute Machine Tools, Inc., 7420 Industrial Parkway Drive, Lorain, OH 44053, 800-852-7825, Fax: 440-960-6918, sales@absolutemachine.com, absolutemachine.com.
MACHINING COMPLEX CHUCKED PARTS
VMC MT series machines from EMAG LLC (Farmington Hills, MI) are ideal production systems for chucked parts with complex geometries. Whether they are used for prototype production or for fast changes in small production runs, the VMC MT series meets the demands of flexible production situations through ergonomic accessibility of the machining area and the bottom-mounted workpiece spindle. Offering several equipment options for the customer to choose from, the basic design of the VMC 300 MT, VMC 450 MT or VMC 600 MT remains the same. The machine base is made of Mineralit® plolymer concrete featuring particularly good damping properties. The turning/milling spindle is mounted on a compound slide with X- and Z-axes to produce excellent, fast machining results. The workpiece itself is clamped on one of the three bottom-mounted spindles available, 49 kW, 83 kW or 138 kW, each tailored to the machining job suiting the customer’s demands.
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Accessibility to the machining area allows workpieces to be easily loaded by hand, using a crane, or the machines can be connected to robots or gantry loaders using an NC-controlled loading hatch on the side. Universality is the main feature of the VMC MT series, which can be configured to suit almost any customer requirement. For example, not only is the whole range of turning, drilling and milling technologies available, but the turning/milling spindle is also available in two versions, with a rating of either 26.4 kW or 43 kW. However, the use of a tool magazine allows the most complex geometries to be achieved with a wide variety of parts, making the VMC MT machine a genuine wonder of productivity.