At present, the positioning accuracy of the truss manipulator can reach 0.02mm, and the repeated positioning accuracy can reach 0.01mm. Therefore, the precision and stability of the truss manipulator is also very high, which can meet the current loading and unloading requirements of the truss manipulator, so there is no need to worry about this. What are the factors that affect the accuracy of truss machinery? let's see.
1. The structural rigidity of the truss manipulator: the design of the truss manipulator
Low structural strength and rigidity will cause vibration, resulting in low positioning accuracy. 2. Moving weight, including the weight of the manipulator itself and the grasping workpiece: In the design of the truss manipulator, the stiffness of the manipulator is generally determined according to the weight of the workpiece. When the weight of the grasped workpiece is heavier, the inertia will be greater, so when the weight of the workpiece increases, the positioning accuracy will decrease.
3. The influence of control and positioning methods on accuracy:
When the positioning method adopts block positioning, the positioning accuracy will be related to the strength of the stop and the operating speed of the truss manipulator. The positioning of the servo motor is greater than the positioning of the stop; when hydraulic and pneumatic control is used, the air pressure and hydraulic pressure fluctuate due to the influence of air temperature. The stability of servo control is greater than that of pneumatic and hydraulic control.
Generally speaking, the positioning accuracy of the truss manipulator is the theoretical accuracy, and the actual application accuracy should be determined by the weight of the workpiece. Due to different product weights, different positioning and driving methods will affect the operating accuracy of the truss manipulator. Therefore, when choosing a truss manipulator, you should choose a manufacturer with mature experience, so as to ensure the rigidity of the designed manipulator and thus ensure the positioning accuracy of the truss manipulator.