Miyano fixed-head lathe benefits from Citizen control technology

The machine, which has two spindles and a single 12-station turret, has a similar productivity capability as a twin-spindle, twin-turret machine configuration. The 42 mm bar capacity BNX-42SY follows the Citizen high productivity capability of overlapping X and Z-axis functions, with simultaneous machining of components in both the main 11 kW, 6,000 rpm spindle and 5.5 kW, 5,000 rpm second spindle. The turret has 12 independent driven tool positions and +40 mm of Y-axis cross feed that improves the level of setting flexibility and machining capability. The Citizen influence on the machine control is strong in the Miyano, with very clear screen display, customised to the BNX-42SY through display illustrations, photographs and operational modes on the menu. T-code commands now simultaneously execute multiple actions. Special G-codes are available for 10 machining sections, such as simultaneous machining, pick-off and axis superimposition control , which, from a single command, simultaneously moves the axis to the start position, sets the work co-ordinates and change mode. A significant advantage for reducing set-up times is achievable by inputting workpiece diameter, chuck and tool dimensions in advance, which enables the turret to automatically move to a safe index position by the shortest path. A further example is the selection of a feature such as 'cut-off operation'. The pressing of a button initiates a series of operations involving tool positioning, the cut-off cycle and tool retract. The machine is compact, requiring just 2.7 by 1.5 m of floor space, and is available with a host of options, including high pressure coolant and a through parts carrier for longer components.