As the core component for robots to perform tasks, the robotic arm needs to combine high precision and high strength. Its outer shell is mostly made of lightweight materials such as aluminum alloy. Through CNC processing, the dimensional accuracy can be precisely controlled and the surface quality can be improved, laying the foundation for the accurate installation of internal components. In addition, key components inside the robotic arm, such as connecting rods and shafts, also rely on CNC processing to ensure accurate motion transmission and positioning. The base of the robot, as the foundation for supporting the whole, must have sufficient stability and rigidity. With the help of CNC processing, the base can be precisely milled and drilled to ensure the high precision of the installation holes and positioning surfaces, enabling the robot to be stably installed on the work platform.

CNC machining, by employing processes like hobbing and gear shaping, can produce gears meeting various specifications and accuracy levels, fully satisfying the diverse transmission requirements of robots. In the machining of lead screw - nut pairs, it can precisely control the pitch accuracy and surface finish of the lead screws, as well as the fit accuracy of the nuts. For shaft - type parts, CNC machining can ensure that the diameter accuracy, cylindricity, and surface roughness of the shafts meet the standards, guaranteeing the fit accuracy and transmission efficiency between the shafts and other components.

The dimensional accuracy requirements for robot joint components are extremely high. For example, the diameter tolerance of the joint shaft needs to be controlled within ±0.005mm, and the position accuracy error of the joint hole should be controlled within ±0.01mm. With the help of precise computer programming and control systems, CNC machining can accurately regulate the tool's movement trajectory and cutting volume, ensuring the dimensional accuracy of all parts of the joint components, guaranteeing the fit accuracy between components, and enabling the robot to achieve precise movement.