Dual-Spindle Tool Grinder Meets Production Requirements at Lower Price Point
Eastec 2019: With the VGrind 360E, Vollmer is expanding its portfolio for machining carbide tools such as cutters, drills or reamers ranging to 100 mm in diameter.
With the VGrind 360E, Vollmer is expanding its portfolio for machining carbide tools such as cutters, drills or reamers ranging to 100 mm in diameter. The machine is equipped with two vertically configured grinding spindles for added throughput.
Short linear-axis travel distances and swivel ranges increase efficiency and precision in five-axis production. The two grinding spindles are situated one above the other, with a grinding wheel set positioned in the C-axis pivot point, provide precise grinding results. Both spindles can be fitted with various tools. The polymer concrete wall concept further aids precision with its high rigidity and damping properties.
The company explains that the VGrind 360E’s particular features enable it to process tools in the same time and with the same quality as the VGrind 360, but at a lower price point.
It sounds like a contradiction in terms-between centers and centerless grinding on one machine. But for some categories of workpieces, it's a viable production process that can yield machining time reductions of 45 percent over separate grinding operations.
Optimizing a camshaft lobe grinding cycle has traditionally been based less on science and more on educated guesswork and numerous test grinds. Now, computer thermal modeling software can predict areas where lobe burning is likely to occur, in order to determine the fastest possible work speed that won't thermally damage lobes and greatly reduce the number of requisite test grinds.
Wire EDM units that swivel a horizontally guided electrode wire in a CNC-controlled E axis give this shop the workpiece clearance and flexibility to produce complex, high-precision PCD-tipped cutting tools.