Liebherr Gear and Automation Technologies Inc.’s LGP 2000 machine platform enables profile grinding of workpieces up to 2,000 mm in diameter.
The series is aimed at manufacturers of large gears, particularly in the mechanical engineering, marine propulsion, construction machinery and wind power industries.
The machines feature a high-precision, hydrostatically mounted table with wear-free direct drive. Depending on the machine type, flat or roller linear guides are used, which enable high damping during gear cutting and maximum precision during grinding and gear testing on the machine. Two main stand variants with 1,500 and 2,000 mm of stroke enable efficient machining of even particularly long shafts with multiple gear teeth. The platform’s machines are designed to accommodate automation solutions like pallet changers and ringloaders.
The gear cutting machines offer an optional chamfering device with a conventional end mill that can be used directly on the cutter head. This allows for cost-effective machining even with small batch sizes. When milling internal gear teeth, an integrated chip removal system eliminates the need for a separate, costly channel in the factory floor. The gear cutting machines are suitable for both dry and wet machining.
Various grinding head configurations are available on the LGP for profile grinding of large gears. A specialized feature is the sequential use of two grinding wheels without a tool change. This enables different tool specifications to be used, which either shorten the grinding time or enable higher surface qualities to be achieved in production.
LGP allows both high-speed grinding and creep-feed grinding. Single- or double-sided topological profile grinding and internal grinding using an optional, swiveling internal grinding arm are possible due to the modern LHGearTec. In addition to a conventional double dresser, the LGP can also be equipped with a double dresser for simultaneous dressing of both grinding wheel flanks.
