With its structural parts manufactured from high-quality Meehanite cast iron that has been both annealed and stress-relieved, the Kafo KFO-620-5AX machining centre has been optimised for five-axis working.
Features include a travelling-column structure, a working envelope of 620 x 520 x 460mm, heavy-duty roller-type linear guideways and stainless-steel waterproof covers for the axes.
The precision rotary/tilting table accommodates both 3+2 and simultaneous five-axis machining, with a B-axis tilt of -40 to +110deg and 360deg of continuous rotation for the C axis.
The direct-drive table (made by the Italian company LCM) eliminates the need for a worm and wheel, which could be damaged in the event of a collision.
Available in the UK from Rugby-based TDT Technology Ltd (
www.tdt-technology.co.uk), the KFO-620-5AX has a footprint of 4,045 x 3,278mm and is supplied as standard with a 12,000rev/min direct-drive spindle; there are options of a 15,000rev/min 40-taper spindle and a 20,000rev/min HSK 63 spindle.
A 24-station tool-changer is offered as standard, with options of 32 or 40 stations; the change time is 2sec tool to tool and 5sec chip to chip. The rapid-traverse rate for the linear axes is 36m/min, and the 650mm-diameter T-slot table accommodates loads up to 300kg.
Options include a Heidenhain tool-measuring system, 20-bar through-spindle coolant, optical scales for the linear axes and optical encoders for the B and C axes. A Heidenhain infra-red probe can be specified for automatic kinematic measurement and the calibration of five-axis positioning.