Pre‑Tightening and Anti‑Slip Solution for Humanoid Robot Joints — Diamond Friction shims with Diamond‑Claw Structure
The joint modules of humanoid robots operate under long‑term reciprocating swing and alternating load conditions. Micro‑slip tends to readily occur at the connecting interface between the reducer and housing flange. Sustained fretting wear causes gradual decay of pre‑tightening force, which directly impairs joint positioning accuracy, triggers operational jitter and shortens the overall service life of the equipment.
DAOLER Diamond Friction Gasket
Limitations of Conventional Solutions
Conventional flat gaskets and ordinary anti‑slip washers rely mainly on surface textures to enhance friction. Nevertheless, they exhibit inadequate wear resistance under cyclic alternating loads and cannot satisfy the requirements for long‑term stable operation of humanoid robots.
Innovative Solution: Diamond Friction Gasket Technology
The DAOLER® Diamond Friction Gasket adopts an electroless‑plating process embedded with composite diamond particles, combined with the self‑developed Diamond Claw® friction‑enhancing structure. Multi‑point meshing contact interfaces are formed upon bolt tightening. This unique structural design effectively raises the interface friction coefficient and restrains fretting slip of flanges.
The Diamond Claw® structure is an exclusive technical configuration of Daojing Technology (Shandong) Co., Ltd., protected by intellectual property rights. Unlike single‑layer plating anti‑slip solutions available on the market, this structure delivers both high friction coefficient and anti‑scratch performance, compatible with various mating substrates such as aluminum alloy and steel.
DAOLER Diamond Friction Gasket
Core Product Advantages
- Stably elevated friction coefficient: Effectively suppresses flange fretting slip and maintains stable pre‑tightening force
- Excellent resistance to alternating loads: Specially adapted to working conditions of continuously swinging robot joints
- Protection for precision mating surfaces: Controlled diamond plating prevents damage to precision surfaces of reducers
- Flexible customization: Annular and special‑shaped specifications are available for customization to fit mounting dimensions of diverse joint modules
DAOLER Diamond Friction Gasket
Application Scenarios and Verification
This solution has been widely adopted in key positions of collaborative robotic arms as well as waist, shoulder and knee joints of humanoid robots. Multiple module manufacturers have replaced imported anti‑slip components with this solution, which has demonstrated outstanding performance in practical deployments.
During model selection, users may select the corresponding type of diamond friction gasket according to parameters including contact surface pressure, operating temperature and pre‑tightening torque to achieve optimal application performance.
