GPS-30B CNC Cylindrical Grinder Provides Sufficient Rigidity and Load Capacity

Originally titled 'CNC Cylindrical Grinder Provides Sufficient Rigidity and Load Capacity'

Shigiya USA Ltd.’s GPS-30B CNC cylindrical grinder is built with a range of rigid features to allow for heavy and precise grinding.

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Shigiya USA Ltd.’s GPS-30B CNC cylindrical grinder is built with a range of rigid features to allow for heavy and precise grinding, the company says. The company developed its own bearing grinder to grind the GPS-30B’s non-concentric hydrodynamic bearings and ensure their rigidity and precision.

The grinder’s wheelhead and table head sliding surfaces have wide V and flat slide ways that provide sufficient rigidity and load capacity. The high dampening performance and equalization of the lubrication oil provided by the oil film’s squeezing effect help the grinder maintain precision and smooth operation for decades, the company says. To prevent thermal displacement because of an increase in lubrication temperature, the wheel spindle oil is stored in an isolated tank. Because the wheel dressing device is mounted onto the lower table of the GPS-30B, there is no need to change dressing coordinates. A non-swivel wheelhead with a highly rigid main body and large-diameter wheel spindle is available as an option.

Shigiya’s interactive conversational programming system requires virtually no programming knowledge to operate. The system automatically sets up optimum grinding patterns and conditions after an operator enters numeric figures for three items. The system accommodates a variety of grinding and dressing patterns to facilitate high-precision cylindrical grinding. Data for as many as 47 workpieces can be stored with maximum steps. Tolerance input is possible at the submicron level. A variety of alarm functions are included to prevent human error.

The GPS-30B can change speed on the AC servomotor within a range of 15 - 600 rpm. Optimal rotational speed can be automatically determined by the interactive automatic programming system. To achieve high precision heavy grinding, the manual tailstock is mounted with a large diameter spindle that has been precisely processed. The GPS-30 features a 300-mm diameter swing over table, maximum grinding diameter of 300 mm and 500 - 2,000-mm distance between centers. Models with as much as 750-mm center distance come equipped with a compact workhead and tailstock units.