Humanoid robots represent a core track of high-end intelligent equipment. The motion accuracy, durability, stability and safety reliability of the whole machine largely depend on a large number of fasteners. Screws, bolts, pin shafts, gaskets and other fasteners are installed in key positions such as joints, torsos and drive modules, bearing reciprocating torsion and impact loads for a long time. Cutting oil, polishing paste, metal micro-chips and dust impurities remaining on fastener surfaces, thread roots and blind holes are hidden risks that lead to jamming, abnormal noise, torque fluctuation, fretting corrosion and fatigue fracture. Conventional cleaning methods can hardly reach deep into thread gaps. Substandard cleanliness directly restricts the assembly yield and service life of humanoid robots.

Focusing on the cleaning scenario of precision fasteners for humanoid robots, Buck has developed a dedicated cleaning process system suitable for small parts with high cleanliness requirements. Adopting vacuum-ultrasonic composite cleaning technology together with eco-friendly hydrocarbon and modified alcohol cleaning solvents, it addresses the pain points in precision fastener cleaning. Unlike ordinary ultrasonic cleaning, which suffers from bubble shielding, uneven cleaning and secondary contamination, the vacuum environment enables rapid removal of micron-sized particles and stubborn oil contaminants deep inside threads. Ultrasonic energy penetrates evenly into thread crevices and tiny blind holes while protecting the substrate, without damaging thread precision or surface coatings, meeting the strict cleanliness control standards for robot fasteners.

In terms of process flow, Buck integrates cleaning, rinsing and vacuum drying into a closed-loop one-stop process. Workpieces are fed and discharged in batches in order. No residual water stains, white spots or debris remain after cleaning, with stable and traceable cleanliness indicators to adapt to continuous mass production. For fasteners of different materials, including alloy steel, stainless steel, titanium alloy, color zinc plating, Dacromet and other surface-treated parts, the solvent formula, ultrasonic power and vacuum parameters can be flexibly adjusted to balance cleaning performance and anti-corrosion protection. It prevents coating discoloration and hydrogen embrittlement caused by cleaning processes, complying with the process specifications of high-end robot components.

Humanoid robots impose extremely high requirements on component consistency. Cleanliness fluctuation of a single fastener will amplify motion errors of joints. Buck’s complete cleaning solution is equipped with on-line cleanliness inspection and residue sampling mechanisms. Cleaning data can be recorded and stored for customers’ quality control, satisfying the mass production supply chain standards of leading robot enterprises. From sample verification and small-batch trial production to production line implementation, Buck provides one-stop services including equipment selection, process commissioning and cleanliness validation.

Precision manufacturing lies in subtle cleanliness. Leveraging vacuum-ultrasonic composite cleaning technology, Buck overcomes the cleaning challenge of micro gaps in the threads of humanoid robot fasteners. It consistently supplies fasteners with high cleanliness, laying a solid foundation for accurate transmission and long-term stable operation of robot joints, and supporting the high-quality mass production of the humanoid robot industry.