Heller Maschinenfabrik 5-axis mill-turn centre features HSK 63 spindle
Germany – Heller’s CP 4000, a twin-pallet change, horizontal-spindle, 5-axis mill-turn centre debuted in April at Mach 2016. The 800 mm x 800 mm x 1.045 mm centre is equipped with a new rigid PCU (power cutting universal) HSK 63 spindle.
According to Heller, the CP 4000 with its universal C-axis spindle head can machine components at angles between 15° and -195°. Designed for a wide range of applications, the nominally horizontal-spindle centre features precise control over speed and acceleration to achieve workpiece precision and a good surface finish.
The B-axis rotary table provides Z-axis motion, allowing for precise, fast movements in all linear axes, which accelerate at 6 m/s2 to a traverse of 65 m/min, Heller says. Linear scales are fitted to the Siemens Sinumerik 840D sl control, ensuring accurate positional feedback. An alternative control offered is the Fanuc 31iB.
The company claims that the CP 4000 enables productive metal removal rates. Also, the mill-turn build concept is designed around executing horizontal, vertical and tilted turning operations using the 1,000 rpm B-axis table with direct torque drive and a fifth CNC axis is provided by positioning the C-axis swivelling spindle head.
To identify imbalances on the workpiece or rotary table during turning, Heller has developed a function that feeds back internal drive signals to enable precise centric clamping.