High-Volume Grinding Machine delivers consistent quality.

Press Release Summary:

With its one-table design, LGG 180 combines short grinding times with consistent, large-scale production. Every machined part is manufactured under same conditions for optimal reproducibility. Allowing rotation speeds to 10,000 rpm, grinding head has spindle power of 35 kW for accelerated cutting and feed rates. Undulations can be applied specifically to gear wheel flanks for noise optimization purposes, and ability to produce sub-micron range waviness increases optimization options.

Original Press Release:

New Grinding Machine LGG 180 Delivers Consistent High-Volume Production Quality

Liebherr’s new LGG 180 machine for profile and generating grinding combines short grinding times with consistent high large-scale production quality, thanks to a one-table design.

The advantage to the one-table solution is higher quality throughout the entire production. Every machined part is manufactured under the same conditions for the highest reproducibility, said Dr.-Ing. Andreas Mehr, Grinding and Shaping Technology Development and Consultancy at Liebherr-Verzahntechnik GmbH.

“A key argument in favor of the one-table solution is the statistical capability and reliability in continuously producing controlled µ-range finish quality,” Mehr emphasizes.

The new grinding head allows for rotation speeds up to 10,000 rpm and has spindle power of 35 kW. Given this performance data, the head enables high cutting speeds and high feed rates. The new grinding machine can exploit the considerable potential of the innovative abrasive Cubitron II.

The machine will enable undulations to be applied specifically to gear wheel flanks for noise optimization purposes for the first time. The ability to produce sub-µ range waviness cost-effectively gives designers a whole new range of optimisation options.

Production advantages.

The LGG machine delivers fast processing combined with the set-up advantages of a one-table solution. In addition, the machines for both 180 mm and 280 mm gears have the same compact external dimensions, facilitating installation within production lines.

“Vehicle manufacturers can thus 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.

In order to minimize any thermal impacts, the machine bed is of a thermally stable material. The core of the machine is the newly developed grinding head. Conventional solutions have been chosen here in several areas in order to be prepared for yet higher quality requirements.

About Liebherr-Verzahntechnik GmbH

The Liebherr Group has been designing and manufacturing gear-cutting machines for nearly sixty years. Since 1962, these activities have been centred at Liebherr-Verzahntechnik GmbH in Kempten, Germany. Today, Liebherr is one of the leading manufacturers of CNC gear-cutting machines and automation systems. The company manufactures gear hobbing machines, gear-shaping machines, generating and profile grinding machines and gear-cutting tools. In the field of automation systems, in cooperation with well-known machine manufacturers, Liebherr supplies machining lines, automated machining centres, and system integration of machine tools with gantries, robot integration and pallet-handling systems.

Liebherr-Verzahntechnik GmbH is the divisional control company of the Liebherr Group’s machine tools and automation systems division. This division employs about 1,300 people all over the world and has manufacturing facilities in Kempten (Germany), Ettlingen (Germany), Collegno (Italy), Saline (Michigan, USA) and Bangalore (India) along with a worldwide marketing and service organization.

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