Grinding Machines Increase Workpiece Space, Enhance Rigidity
IMTS 2018: United Grinding is displaying the Walter Helitronic Power 400 and Helitronic Power Diamond 400 grinding machines, both said to offer 35 percent more workpiece space.
United Grinding is displaying the Walter Helitronic Power 400 and Helitronic Power Diamond 400 grinding machines, both said to offer 35 percent more workpiece space and the capability of grinding tools ranging to 380 mm (14.96") in length. They also feature remodeled machine beds with enhanced rigidity for greater vibration damping, improved part surface finishes and greater precision. A worm drive for the C axis, an optional torque motor, and pneumatically-driven steady rests and tailstocks are said to improve grinding and eroding operations by reducing leaks and improving heat management for greater cleanliness.
Unlike previous models, these machines accommodate gantry-style loaders for up to 500 tools or robot loaders for up to 7,500 tools. The Diamond 400 features the company’s Fine Pulse technology, and both machines are equipped with the company’s Helitronic Tool Studio grinding and eroding software.
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.
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.
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.