IMTS 2016: Liebherr Gear Technology, Inc. (N-6930)
LGG 280 Gear Grinding Machine
With a one-table design and a new-design grinding head, the new Liebherr LGG 280 gear grinding machine greatly reduces grinding times for twist-free profile and generating grinding of workpieces to 280 mm diameter.
Presented for the first time in North America at IMTS, the machine is the second in the LGG series and is designed to deliver consistently high large-scale production quality in automotive applications, including conical gearing. With it, manufacturers can produce smaller gears with greater load-carrying capability. (See the full presentation of the machine at the website below).
According to a Liebherr spokesman, "With this series of space-saving machines, vehicle manufacturers can develop a complete production line, in which all gearing components for a passenger vehicle transmission can be ground: planetary and sun gears, bore-type gears, as well as drive and pinion shafts with lengths up to 500 mm."
The advantage to the one-table solution is higher quality throughout the entire production. There is one clamping fixture, one geometry. Every machined part is manufactured under the same conditions for high reproducibility. The one-table approach provides the statistical capability and reliability in continuously producing controlled µ-range finish quality for gear noise optimization.
The new grinding head allows for rotation speeds up to 10,000 rpm and has spindle power of 35 kW. With this performance data, the head enables high cutting speeds and high feed rates.
