Grinding Machines tackle complex tool and part designs.

Press Release Summary:

In addition to main 5 CNC axes, Rotoline CNC Machines are equipped with CNC steady rest and CNC tailstock support. Steady rest travel is 600 mm, independently adjustable from infeed Z-axis. Tailstock center travel is 660 mm with 450 mm between centers. Z-, W1- and W2-axis travel is either independent or synchronous. Grinding wheel diameter is 150 mm, and 9 kW ac variable speed motor offers steplessly adjustable speed control up to 10,000 rpm.

Original Press Release:

7-Axis Ewag Rotoline Tackles Complex Tool & Part Designs

MIAMISBURG, OH - United Grinding Technologies, Inc. (UGT) announces the introduction of a new addition to its Ewag line of high-precision tool grinding and regrinding machines for very complex shapes, the 7-axis CNC Rotoline.

According to Dave Barber, Marketing Manager, the Rotoline is uniquely suited to today's demand for ultra-precise grinding of highly complex tools, screws, inserts and other parts with applications in the medical, dental and electronic industries. "There are a number of multi-axis machines on the market for grinding and regrinding standard rotating drills and endmills," Barber says. "However, the trend toward producing parts of increasing complexity - bone screws, reamers, hip and joint replacement parts, and the equally complex tools needed to produce them - require a grinder with the precision, flexibility and rigidity to address a higher level of complexity. The Rotoline is the right choice for the production of ultra-fine finishes on tough materials, or micron-precise contours and profiles on small, delicate and very complex tools and parts."

In addition to the main fives CNC axes, the Rotoline is equipped with a CNC steady rest (Wl) and CNC tailstock support (W2). The steady rest features a mechanical centering device that can either remain stationary or revolve synchronously, depending on the grinding operation, and permits the concentric adjustment of the guide support. Steady rest travel is 600 mm, independently adjustable from the infeed Z-axis. The steady rest is easily swiveled during grinding via input at the machine control and can be equipped with either a guide bushing, a half cup or prism support.

Tailstock center travel is 660 mm with 450 mm between centers. Center height is 150 mm. Spring-loaded tailstock center, mounted on a longitudinal slide, is automatically positioned by the CNC control, permitting the tailstock to be moved away immediately before face or point grinding.

Z-, W1- and W2-axis travel is either independent or synchronous. Swiveling B-axis (range of ± 200°) offers unlimited positioning of the grinding wheels, presenting the best solution for grinding tools with differing spiral leads (left or right hand twist; left or right hand cutting) on the same tool.

General features
The 7-axis Rotoline features a direct drive rotary C-axis and swivel B-axis; a quick-clamping unit for ISO 50 tool holders and collet chucks; a double-ended grinding spindle with up to three grinding wheels at each end; and a tool grinding spindle for spiral and cylindrical grinding. Grinding wheel diameter is 150 mm, and a 9 kW AC variable speed motor with steplessly adjustable speed control up to 10,000 RPM.

The NUM 1050 is a highly flexible, robust and user-friendly CNC control. Setup and changeover are fast and uncomplicated due to user-friendly Windows(TM)-based software (Numroto) permitting conversational or real-time programming of standard or special tools. Integrated data management system allows storage of all grinding features, parameters, cycles and routines and allows simultaneous programming of different batches with different geometries. Remote diagnostics, process control and trouble-shooting via standard telephone line and machine modem link are easily facilitated

A standard 2-D simulation program displays the grinding wheel during the grinding process in relation to the calculated grinding path. This powerful tool (available in optional 3-D) permits process analysis and verification prior to actual grinding, assuring that the simulated process matches the desired finish ground result.

Founded in 1946 in Etziken, Switzerland, Ewag AG has become one of the world's leading manufacturers of high-precision tool grinding machines and production tool grinding centers for the production of rotary tools and indexable inserts made of tungsten carbide, PCD and PCBN. Ewag machines are renowned for their extraordinary precision, state of the art grinding technology and exceptional durability. Ewag grinding machines are supported by an expert team of grinding specialists and technicians drawing on hundreds of machine installations in more than 50 countries, as well as a worldwide support and service network.

United Grinding Technologies, Inc., the North American arm of the Korber-Schleifring Group and supplier of such venerable nameplates as Blohm, Ewag, Jung, Magerle, Schaudt Mikrosa BWF and Studer, is a global leader in grinding technology and has built a reputation for industry-leading innovation and unparalleled service and support.
For more information, contact United Grinding Technologies, Inc.; 510 Earl Blvd., Miamisburg, OH, 45342. Tel: 937/847-1222. Fax: 937/859-1115.

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