Whether the punch feeder can work accurately is actually a three-dimensional space positioning problem, which is a combination of several line quantity and angular quantity positioning. In many simpler cases, the single magnitude of the punch feeder may be dominant. The factors that affect the positioning error of a single line or angular amount are as follows: positioning method, positioning speed, accuracy, stiffness, weight of moving parts.
(1) Positioning method
Different positioning methods have different influencing factors. When the mechanical stop is positioned, the positioning accuracy is related to the stiffness of the block and the speed at which the block is abutted.
(2) Positioning speed
The positioning speed has a great influence on the positioning accuracy. This is because the energy of the moving parts that must be dissipated differs when the positioning speed is different. Generally, in order to reduce the positioning error, the positioning speed should be reasonably controlled, such as improving the cushioning performance and the buffering efficiency of the buffer device, and controlling the driving system to slow down the moving parts in time.
(3) Accuracy
The manufacturing accuracy of the punch feeder and the accuracy of the installation speed have a direct impact on the positioning accuracy.
(4) Stiffness
When the structural rigidity and contact rigidity of the punch feeder itself are low, the positioning accuracy is generally low due to the easy vibration.
(5) The weight of the moving parts
This includes the weight of the feeder's own robot and the weight of the object being picked. The change in the weight of the moving parts has a great influence on the positioning accuracy. Generally, when the weight of the moving member is increased, the positioning accuracy is lowered. Therefore, it is not only necessary to reduce the weight of the moving parts themselves, but also to consider the influence of the change in the weight during work.
Follow the above five principles of use, so that the punch feeder machine can work accurately and at high speed.
