SR-Series lathes feature novel turret system

First unveiled at Chicago IMTS last year, Hardinge is announcing its new SR series machines in the UK. The universal chuck and bar turning centres are aimed at precision manufacturers operating in tough and demanding production environments. The machines, ideal for low or high volume production, can be configured and supplied for either 2-axis turning or single set-up, multi-tasking machining operations. SR-Series machines have a rigid cast iron base reinforced with HARCRETE polymer composite (synthetic granite). This combination significantly reduces vibration and, as a consequence, improves workpiece surface finishes (0.25 micron) and increases tool life by up to 30 per cent. There are two models, SR150/200 - 6 and 8 inch chuck. A VDI turret top plate is standard – irrespective of whether live tooling or Y-axis options have been specified. The optional ESA (Eppinger Self Alignment) turret, top plate and tooling system provide users with increased tool rigidity (see link below). The machines are equipped with Fanuc i control systems which have many multi-tasking features provided as standard, offering graphic toolpath display, rigid tapping, tool life management, variable lead thread cutting, and run time and parts counter. For ease of use and as a failsafe, the machines’ advanced, conversational programming system - Manual Guide i - enables the operator to view the generated part program on the machines’ display panel which ensures that the intended manufacturing process is proven prior to machining. SR machines can be supplied with a range of options depending on manufacturing requirements - sub-spindle (A2-5); live tooling; Y-axis. The sub-spindle provides through capability/capacity up to 42 mm with 16C collets, and a gripping capacity of 139 mm with 150mm jaw chucks or step chucks. Exact synchronisation between the main and sub-spindles (at any rpm) can be achieved enabling fast part transfer for secondary ops. Live tooling is available on VDI 30 and ESA top plates to work on the main or sub-spindle. Each station can be equipped with a driven tool for cross or end-milling/drilling operations. The machines’ capabilities and productivity are increased with the Y-axis option which enables users to perform thread milling and complex off-centre mill/drill operations on either the main or sub-spindle.