What Are the Functions of the Joint Modules in a Six-Axis Robot?

Oct 11, 2026 Leave a message

Daniel Tan
Daniel Tan
Head of product marketing, Daniel is responsible for positioning Hansheng's products in the global market. His work includes developing marketing strategies and communicating our value proposition to customers worldwide.

 

A six-axis robot has six joint modules, each responsible for a specific motion function.

Axis 1: This joint connects the base and mainly supports the weight of the upper structure while enabling left and right rotation of the base. The rotation is driven by a motor and reducer. Each axis represents one independent motion mode.

Axis 2: This joint controls the forward and backward swing of the robot's main arm and also drives the vertical movement of the main arm body.

Axis 3: Axis 3 also controls forward and backward swing of the robot arm, but its swing range is smaller than that of Axis 2.

Axis 4: Axis 4 controls the upper cylindrical section of the robot arm and allows free rotation. Its motion range is similar to a human forearm, but it is not a full 360° rotation because internal wiring limits the movement.

Axis 5: Axis 5 controls fine-tuned upward and downward flipping motion. It is usually the joint that allows a picked product to be turned over after gripping.

Axis 6: Axis 6 is the rotating part at the end flange. It can rotate 360°.

 

For non-standard joint module housings, adapter flanges, or replacement mechanical parts used in these six-axis robot joints, Hansheng Automation provides custom machining services based on customer drawings, supporting prototype development and small-batch production.

Robotics