2026 ET Webinar Series
April 1, 2026
1:00pm-2:00pm ET
The increasing demand for high-precision internal gears in automotive and industrial applications has driven the development of advanced hard finishing processes. This presentation introduces SkiveFinishing®, a novel method designed to achieve superior gear quality and surface finish for hardened internal gears. SkiveFinishing® is defined as hard finishing by gear skiving using a dressable-free CBN skiving cutter, combining the productivity of skiving with the precision of hard finishing. After providing an overview of conventional manufacturing techniques for internal gears, the process principle of SkiveFinishing® will be explained, highlighting its unique advantages in terms of efficiency, flexibility, and achievable quality. Initial machining results on the LK 280 and LK 500 gear skiving machines demonstrate gear quality within ISO 1328 Class 5 and surface roughness values of Ra < 0.4 µm, confirming the process’s capability for high-performance applications. A comparative analysis of SkiveFinishing® against hard skiving and CBN profile grinding will be presented, emphasizing differences in process efficiency and achievable tolerances. The session concludes with a summary and outlook on future developments and potential applications of SkiveFinishing® in gear manufacturing.
Speakers
Dr.-Ing. Andreas Mehr
Head of Technology Development at Liebherr-Verzahntechnik GmbH
Dr.-Ing. Andreas Mehr is Head of Technology Development at Liebherr-Verzahntechnik GmbH in Kempten, Germany. He began his academic and professional journey at Universität Karlsruhe (TH), Germany, where he earned his degrees in Mechanical Engineering (1992–1999). Following this, he spent five years as a research scientist in the Manufacturing and Materials Technology group at the wbk Institute of Production Science, Universität Karlsruhe (TH). His doctoral research focused on “Hard precision machining of gears with crystalline diamond-coated tools by gear shaping.”
Since joining Liebherr in March 2004, Dr. Mehr has held key roles in advancing gear manufacturing technologies. In addition to leading technology development, he serves as Liebherr’s subject matter expert for gear shaping and gear grinding, supporting customers in optimizing gear applications.
Dr. Mehr is a frequent contributor to the global gear technology community. He has presented numerous times at the AGMA Fall Technical Meeting and at leading international conferences, sharing insights on cutting-edge developments in gear machining, process optimization, and tool technology. His work continues to influence best practices and drive progress in the field of gear manufacturing.