Robot load includes three important parameters: rated load, additional load, and effective load.
Rated load, also known as tool load, refers to the maximum load mounted on the robot flange in all positions, and is the sum of the gripper mass and the mass of the largest object that can be grasped. Rated load is affected by many factors such as center of gravity, total mass, motor and reducer power, arm length, speed, and acceleration.
Additional load, also known as arm load, refers to the load mass attached to each robotic arm, such as power supply system, valves, feeding system, material storage, etc., which is affected by factors such as trajectory, acceleration, cycle time, wear, and power of motors and reducers of each axis.
Payload, also known as load capacity, refers to the maximum load mass that a robot can handle while working. It is necessary to consider not only the load capacity of the robot's end effector, but also the additional load. If this load is exceeded, the robot will stop working or experience accuracy deviations. Currently, the maximum payload of industrial robots is about 4 tons.
