Universal Grinding Machine Performs Straight, Angular Work
IMTS 2018: Toyoda’s GL4i-Switch universal grinding machine features an adjustable wheelhead for straight and angular applications.
Toyoda’s GL4i-Switch universal grinding machine features an adjustable wheelhead for straight and angular applications and the capability to complete OD and angle-head work. These features enhance repeatability and reduce cycle times by enabling the machine to run multiple operations in a single setup, requiring fewer offsets or adjustments to the part. The machine’s workhead swivels in increments of 0, 30 and 45 degrees for flexible grinding, including smaller-diameter journals.
Designed for high-production manufacturing, the machine features the company’s stat bearing and floating plate technology for accuracy and positioning. A reinforced cast iron bed improves coolant flow and reduces thermal displacement.
The machine uses the company’s Toyopuc-Touch conversational control, which gives the operator intuitive data entry capabilities with visualization of equipment status for smart manufacturing.
For large-part grinding applications, the machine comes with a distance between centers ranging from 500 mm (19.7") to 2,000 mm (78.7"), a swing ranging to 400 mm (15.7") and increased part capacity ranging to 300 kg (661 lbs).
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.
In vertical grinding, the workpiece is held upright in a rotary chuck with the grinding spindle overhead. This configuration can improve roundness, facilitate single-setup processing and prolong the life of the machine. Loading and unloading may gets easier, too. Workpieces with relatively large diameters and short lengths benefit the most from vertical grinding.
Because of the high material removal rate creep-feed grinding can deliver in challenging materials, grinding might not be just the last step in the process—it might be the process.