U-shaped support for upper limb joints

The upper limb joint U-shaped bracket is the core load-bearing transmission component of the robot shoulder, elbow other key activity nodes, its structure design directly affects the flexibility of upper limb movements, load-bearing capacity operational stability. As a bridge connecting the robot's trunk the upper limb execution mechanism, this part provides stable support for the external rotation internal rotation of the robot shoulder joint the flexion, extension, rotation of the elbow joint, which is an important mechanical foundation for the robot to achieve fine operation heavy-load operation.

Product features

High-intensity lightweight material combination

The main frame adopts the overall forging process of TC4 titanium alloy, with a tensile strength of up to 900MPa a yield strength of ≥800MPa, which is 40% lighter than traditional stainless steel material; the inner sliding contact surface of the frame is inlaid with aviation-grade aluminum alloy wear-resistant bushing, the surface is treated with hard anodizing, with a hardness of more than HV300, a friction coefficient of ≤0.08, effectively reduces wear tear.

Micro-scale symmetrical precision control

Five-axis linkageProcessing centerone-time molding, the coaxiality error of the two side shaft holes ≤0.002mm, the symmetry deviation <0.005mm; the tolerance of the U-shaped opening angle is controlled within ±0.05°, ensuring the uniformity of the assembly clearance with the joint drive motor. After full-field inspection by a three-coordinate measuring machine, the key size accuracy is stable at IT5 grade, meeting the long-term stability requirements of high-frequency reciprocating motion.

Integrated functional design

Standard motor mounting flanges are reserved at both ends of the frame, compatible with the interface of 57-110 series servo motors; an inner groove is integrated as a cable management channel to avoid entanglement of cables during motion; stress relief holes are set at the bottom to maintain elastic deformation within 0.1mm when subjected to 1.5 times the rated load, ensuring both structural strength buffer protection.

Extreme environment adaptability

The surface is treated with multi-arc ion plating titanium, forming a wear-resistant corrosion-resistant layer of 5μm thickness, which is rust-free after 480 hours of salt spray test; within the low temperature of -40℃ to high temperature of 80℃, the dimensional stability error is less than 0.001mm/℃, it can be used for a long time in complex environments such as humid workshops outdoor operations.

Application scenarios

In the field of industrial collaborative robots, the robotic arm supported by the U-shaped bracket can achieve a repeat positioning accuracy of ±0.02mm, meeting the needs of fine operations such as electronic component assembly precision welding; in household service robots, the lightweight design reduces the energy consumption of upper limb movements by 30%, the silent operation characteristics ensure comfort in the home environment; in medical rehabilitation robot applications, its rounded edges low-allergenic surface treatment can avoid patient contact injuries, the 134℃ high-temperature sterilization resistance meets medical health standards; after the special operation robot is equipped with this part, it can complete 8 hours of continuous rescue material handling under a load of 50kg, the structural reliability in extreme environments provides a guarantee for disaster relief.