Vollmer’s VGrind 360E Overcomes Bearing Problems with Vertical Spindle Alignment
Westec 2019: Vollmer’s VGrind 360E has two vertically configured grinding spindles.
Vollmer’s VGrind 360E five-axis CNC grinding machine has two vertically configured grinding spindles. It is designed with short linear-axis travel distances and swivel ranges for increased efficiency and precision in production. The two grinding spindles are situated one above the other, with a grinding wheel set positioned in the X-axis pivot point. The VGrind’s polymer concrete walls increase rigidity.
The VGrind’s vertical spindle arrangement is said to solve problems related to fixed and floating bearings. Both grinding spindles can be fitted with various tools. Its motor and spindle cooling concept is said to provide higher thermal stability and lasting power and precision.
Roughing and finishing on a single machine, using a single setup, has appeal for most shops. The advantages in time savings and accuracy are obvious. Eliminating the transport of workpieces between machines, as well as the setup for those secondary operations, is a boon for throughput. Critical features that need to maintain dimensional relationships can be much more reliably produced if machined complete in one clamping.
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.
The double-disc grinding process is consolidating its position in automotive applications but is moving into other industries. Double-disc grinders are now easier to operate, and they have added capabilities for control flexibility, precision process control, faster changeovers, and grinding of nontraditional materials.