Five-axis machine centres offer automation options

Called U-Advanced Series, the machines offer larger magazines up to 122 pockets for SK40/BT40 or HSK63 taper tools, higher speed spindles with maxima of 12,000, 15,000 or 20,000rpm, longer axis travels, higher coolant pressure to 70bar, improved chip flow and a swarf conveyor as standard.

CNC options are the most modern versions of Siemens (840D sl 4.x) and Heidenhain (TNC620/TNC640) controls, both with 15” screen. For operator convenience, the height and angle of the control can be adjusted. Digital drives from the same two manufacturers ensure high precision machining, with linear scales fitted for accurate feedback of axis position.

Despite the longer strokes, now 630x530x465mm for the U-630 and 1,530x530x465mm for the U-1530, the footprints of the machines have been reduced to enable installation in smaller workshops. Furthermore, the overall height is lower, facilitating access to factories.

U3 machine variants are 3-axis VMCs with a fixed table. Built into the base of U4 models is a larger, more dynamic, rigid rotary table that pivots around a horizontal axis to allow workpieces to be clamped on both faces.

For full 5-axis machining, U5 versions have an integrated rotary-tilt table that can optionally be equipped with a counterbalancing system to eliminate the influence of workpiece weight. Direct-drive rotary tables are available.

Low-cost automation is offered in the form of a 5 or 9-pallet pool with automatic pallet exchange. Positioned to the right of the machine, the configuration is said to be particularly well suited to mould making. Alternative automation arrangements accommodate up to 50 pallets.