German Machine Tools of America (GMTA) offers a full line of Rasoma machining centers, including vertical turning centers, 4-axis shaft turning centers, end machining centers, double-spindle and various special-purpose machining centers with full automation is offered. Rasoma is a large machine tool builder, founded in 1919 and based in Döbeln, Germany, who provides contract manufacturing to some of the best known brands in the global auto industry, as well as its own brands.
Gear machines for milling, hobbing and shaping are available in a variety of configurations and the GMTA application engineering team can assist interested parties to determine the best solution.
Rasoma machining centers offer high rigidity, due to separate X and Z slides plus the machine head is designed as a monoblock with polymer concrete fill. Thermal stability is enhanced by cooled motor spindles and the rapid traverse on these centers ranges up to 60m/min. at high acceleration, with feed and removal speeds to 120 m/min., less than 6 seconds from part to part and turret indexing typically under 1 second.
Full option packages include robotic handling and part articulation, integrated metrology onboard, working inside or outside the work envelope, full tool measurement and monitoring systems and driven tool packages, all controlled by a single Siemens CNC.
GMTA President Walter Friedrich comments: “This alignment dovetails perfectly with our other lines of gearmaking, laser and finishing machines and systems. It will enhance our value proposition considerably in our current market of primary automotive and will also open other market opportunities for our company. We have made substantial investments in new personnel and floor space, both here in the U.S. and at our Mexican facility, to support these new additions to our portfolio of quality German machine tools.”
Related Glossary Terms
Cone-shaped pins that support a workpiece by one or two ends during machining. The centers fit into holes drilled in the workpiece ends. Centers that turn with the workpiece are called “live” centers; those that do not are called “dead” centers.
- 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.
Rate of change of position of the tool as a whole, relative to the workpiece while cutting.
- gang cutting ( milling)
gang cutting ( milling)
Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.
Science of measurement; the principles on which precision machining, quality control and inspection are based. See precision machining, measurement.
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.
Using a shaper primarily to produce flat surfaces in horizontal, vertical or angular planes. It can also include the machining of curved surfaces, helixes, serrations and special work involving odd and irregular shapes. Often used for prototype or short-run manufacturing to eliminate the need for expensive special tooling or processes.
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.
- work envelope
Cube, sphere, cylinder or other physical space within which the cutting tool is capable of reaching.