Humanoid joint shell

As a full-industry chain service provider covering the entire process of robot mechanical design, manufacturing assembly of core components, we have developed a humanoid joint shell, which is a key protective structure of the robot joint system. It is mainly used to wrap the core moving parts such as hip joints, knee joints ankle joints, providing physical protection, structural support accuracy guarantee for the joint transmission system of humanoid robots, is an important component to ensure the long-term stable operation of the joint module.

Product features

High-strength materials, balancing protection weight reduction

Adopt aviation-grade aluminum alloy andcarbon fiber composite materialsone-piece molding process, after high-temperature high-pressure curing treatment, the shell body has a tensile strength of 600MPa, can withstand an instantaneous torque impact of 200N・m, can effectively resist external collisions, dust erosion liquid splashing. At the same time, the topological optimization design is used to remove redundant structures, the weight of a single knee shell is only 280g, which is 45% lighter than the traditional steel shell, greatly reducing the energy consumption of robot motion.

Precise machining, ensuring joint motion accuracy

The inner surface of the housing adopts five-axis linkage processing center  precision milling, combined with laser measurement calibration technology, key dimensions are controlled within ±0.01mm, ensuring that the clearance with the joint bearing gear group does exceed 0.03mm. The coaxiality error of the shaft hole at both ends of the housing is ≤0.005mm, which can reduce the eccentric vibration during joint rotation, improve the accuracy of the robot's gait control by more than 15%.

Modular adaptation, compatible with multiple types of joints

The shell interface is designed to comply with ISO/TS 15066 robot safety standards, can adapt to various types of关节 motors reducers with diameters of 30-80mm by replacing different specifications of inner linings. Sensor mounting slot positions are reserved, supporting the integrated installation of force feedback modules temperature monitoring probes, the joint protection requirements of robots with different load grades (20-100kg) can be met without modifying the main structure of the shell.

Corrosion-resistant design, suitable for complex environment

The surface is treated with hard anodizing to form a 15μm thick ceramic protective layer, which can withstand salt spray testing for up to 500 hours without rust. For special scenarios such as humid dusty environments, the shell joints are sealed with nitrile rubber seals to achieve a protection grade of IP66, ensuring structural stability at environmental temperatures between -30℃ 80℃.

Application scenarios

Home service robot

In a domestic setting, the service robot equipped with this joint housing can withstand daily collisions splashes of liquid, its rounded edges reduce the risk of collisions during human-robot interaction. The lightweight design allows the robot to move more flexibly when performing tasks such as window cleaning carrying, the low-noise heat dissipation structure of the housing keeps the joint operation sound pressure level below 45 decibels, avoiding interference with the home environment.

Industrial inspection robot

In an industrial environment, the dust water tightness of the housing can protect the joint the corrosion of machine tool coolant metal chips, the high temperature resistance allows it to continue working in environments above 50℃, such as welding shops. The wear-resistant coating on the surface of the housing can reduce friction wear with the edges of the equipment, extending the replacement cycle of the joint module to more than 8000 hours.

Medical rehabilitation robot

For the rehabilitation auxiliary scenario, the shell adopts a design without sharp corners is covered with a medical-grade silicone buffer layer to prevent scratches when the patient comes into contact with it. Its excellent sealing performance can prevent sweat generated during rehabilitation training seeping into the joint, the detachable disinfection structure can withstand 75% alcohol wipes ultraviolet disinfection, meeting the hygiene requirements of the medical environment.

Special operation robot

In extreme scenarios such as fire fighting disaster relief, the shell's impact resistance can protect the joints damage in collisions with rubble. The low-temperature resistance of -30℃ is suitable for polar exploration robots. The shell's reserved heat dissipation holes insulation layer design can maintain the internal temperature of the joints below 60℃ in high-temperature fire scenes, ensuring the normal operation of the transmission system.