What Determines the Positioning Accuracy of Manipulator?

At present, the positioning accuracy of truss manipulator can reach 0.02mm, and the repeated positioning accuracy can reach 0.01 mm. Therefore, the accuracy and stability of truss manipulator are also very high, which can meet the requirements of loading and unloading of truss manipulator at present, so there is no need to worry about this. What factors will affect the accuracy of truss machinery? Let's take a look.

1. Structural rigidity of truss manipulator:
Low structural strength and rigidity in truss manipulator design will cause vibration, resulting in low positioning accuracy.

2. Moving weight, including the weight of the manipulator itself and the grabbed workpiece:
In the design of truss manipulator, the rigidity of the manipulator is generally determined according to the weight of the workpiece. When the weight of the grabbed workpiece is heavier, the inertia will be greater, so when the weight of the workpiece increases, the positioning accuracy will decrease.

3. 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 block and the running speed of the truss manipulator, and the servo motor positioning is greater than the block positioning; when adopting hydraulic and pneumatic control, the stability of servo control is greater than that of pneumatic and hydraulic control because of the fluctuation of pneumatic and hydraulic pressure due to the influence of air temperature.

Generally speaking, the positioning accuracy of truss manipulator is theoretical accuracy, and the actual application accuracy should be determined by the weight of the workpiece. Because of the different product weights, different positioning and driving methods will have an impact on the operation accuracy of truss manipulator. Therefore, when choosing truss manipulator, we should choose a manufacturer with mature experience, so that the rigidity of the designed manipulator can be guaranteed, thus ensuring the positioning accuracy of truss manipulator.