Okuma America Corp. has introduced its VTM-2000YB multitasking CNC turning center, which provides heavy-duty construction for large parts machining. According to the company, the extreme rigidity and powerful cutting capabilities of this machine make it ideal for machining large diameter workpieces, such as those in the aerospace industry. The vertical architecture offers the advantage of "natural" part handling and excellent chip fall, while taking up minimal floor space.
The VTM-2000YB takes the successful concept of the VTM-200YB and advances the design to increase rigidity, power, B-axis range, speed and accuracy. It utilizes Okuma's Thermo-Friendly Concept to enhance thermal stability, and has powerful turning and milling capabilities with 0.001 degree B and C axes. This CNC turning center has 1.6 meters of Y-axis travel, combines powerful turning and milling functions for large parts in the same machine and includes a 36 tool ATC for tool changing.
Key Specs of VTM-2000YB CNC Turning Center:
• Max Turning Diameter: 2,000mm (78.74")
• Spindle Nose Type: 380mm Flat Nose
• Lathe Spindle Speed: 4~200 rpm
• Milling Spindle Speed: 10,000 rpm
• Rapid Traverse: (X/Y/Z) 32/32/32 m/min. (1,260/1,260/1,260 ipm)
• Rapid Traverse (B/C) 19.5/20 rpm
Related Glossary Terms
- computer numerical control ( CNC)
computer numerical control ( CNC)
Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.
- flat ( screw flat)
flat ( screw flat)
Flat surface machined into the shank of a cutting tool for enhanced holding of the tool.
- gang cutting ( milling)
gang cutting ( milling)
Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.
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.
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.
- rapid traverse
Movement on a CNC mill or lathe that is from point to point at full speed but, usually, without linear interpolation.
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.