Cost-effective cylindrical grinding machine

Edited by the Engineeringtalk editorial team Nov 30, 2001

Manufactured in the Czech Republic by Cetos, the new BUA 25A universal cylindrical grinding machine with teach-in CNC system is claimed to offer an unrivalled price-to-performance specification

Manufactured in the Czech Republic by Cetos, the new BUA 25A universal cylindrical grinding machine with teach-in CNC system now available from Ward CNC of Sheffield boasts an unrivalled price-to-performance specification that will appeal to both toolrooms and companies involved in either one-off or volume production.

With a swing diameter of 500 mm and a distance between centres of 1,500 mm, the Cetos BUA 25A can accommodate workpieces of 500 Kgs.

Workhead swivel and speeds are 90 degrees and 18 to 560 revs/min, and wheelhead swivel is quoted as + 40 degrees to -15 degrees.

Able to utilise 500 mm diameter grinding wheels, wheel speed is 1,695/1,960 revs/min and peripheral wheel speed is 45 m/sec.

Table feed rate is 0.05 m/min to 5 m/min.

The K51 teach-in CNC is a high-performance control system that allows grinding to be performed under manual control or automatically, while also accommodating longitudinal grinding with auto infeed at table reversal points, wheel dressing and intermediate wheel dressing.

In manual mode, wheelhead infeed length and rate control is via a control knob, which can be used to increase the step ten-fold.

For manual longitudinal grinding, automatic infeed can be adjusted at the reversal points.

In volume mode, programs can be created automatically during the grinding of the first workpiece by teach-in methods, with no special programming knowledge being required.

Programming can also be by direct entry of cycle parameters.

As standard, up to 10 teach-in programs can be stored (ie five plunge-cut and five longitudinal grinding programs) and program changes can be easily accommodated for further work since each change is automatically remembered.

The BUA 25A is one of a number of Cetos grinders available from Ward CNC.

These also include other universal CNC cylindrical grinders as well as internal/external, single/two-wheelhead cylindrical plunge and crankshaft-type machines.