Müller Antriebstechnik GmbH (Stuttgart, Germany)
Industry: High-precision gearboxes and transmission systems
Challenge: Production of extremely high-tolerance involute splines for robotic applications in hardened steel (42CrMo4) shafts. Their previous grinding process was precise but prohibitively slow and costly.
Online discovery: Their R&D supervisor saw our technical article on “Broaching hardened materials” on the leading German engineering portal (VDI Nachrichten).
Initial contact and virtual meeting: The conversation is highly technical, focusing on surface finish (Ra < 0.8 μm), tool life expectations, and the metallurgical impact of broaching on hardened steel. We offer material testing certifications for broach tools.
Field visit: The German engineer team visited our factory for a week. They audited our quality control process, witnessed machine testing, and provided their own hardened shafts for on-site, witnessed performance testing under their parameters.
Purchase Decision: They purchased a LC5120C vertical broaching machine for its unmatched precision, full process automation, and integrated process measurement system, providing 100% quality control data for each part.
Use and feedback: “Precision and repeatability meet the stringent requirements of the robotics industry.” Compared to grinding, CNC vertical broaching machines have increased our output by 300% while significantly reducing the cost per part. Automated data logging provides perfect traceability for our quality management system. Perfect engineering solution.
