How to improve the dispensing stability of 3D desktop dispensing machine under complex three-dimensional paths?
Publish Time: 2024-11-11
In modern manufacturing, the dispensing stability of 3D desktop dispensing machine under complex three-dimensional paths is crucial. Here are some effective ways to improve its stability.
Optimize mechanical structure design
First, the accuracy and rigidity of the mechanical structure are key. Improving the motion accuracy of each axis of the dispensing machine and using high-precision guide rails, screws and other transmission components can reduce the accumulation of errors during three-dimensional motion. For example, using a ball screw can effectively reduce the transmission gap, making the dispensing head more accurate when moving on a complex path. At the same time, enhance the overall rigidity of the equipment to avoid dispensing position deviation due to structural deformation. For complex three-dimensional paths, especially in the case of rapid turning or frequent start-stop, a rigid structure can better resist inertial force and vibration. This can be achieved by optimizing the frame structure and using high-strength materials.
Accurate motion control algorithm
Advanced motion control algorithms are indispensable for dispensing stability. When dealing with complex three-dimensional paths, algorithms that can compensate for errors in real time are required. For example, the algorithm based on model predictive control can predict the motion trajectory of the dispensing head and possible deviations in advance, so as to adjust the motion parameters of each axis in time. In addition, the optimization of the interpolation algorithm is also very important. In the three-dimensional path, through more sophisticated interpolation calculations, the movement of the dispensing head is smoother, and the speed mutation and jitter at the turning point of the path are reduced. This can effectively prevent the problem of uneven dispensing or deviation from the predetermined position caused by sudden acceleration or deceleration.
Improve the dispensing system
The performance of the dispensing system itself directly affects the stability of dispensing. For glues of different viscosities, it is necessary to ensure the precise control of the dispensing pressure. A dispensing system with high-precision pressure feedback can be used to monitor and adjust the output pressure of the glue in real time to ensure the consistency of the glue output under complex three-dimensional paths. At the same time, optimize the design of the dispensing head and select the appropriate type and size of the dispensing needle. For example, in some fine three-dimensional dispensing tasks, the use of a conical needle can more accurately control the landing point and flow of the glue, and reduce the uneven size of the glue droplets or drawing caused by unreasonable needle design.
Real-time monitoring and feedback system
Installing a real-time monitoring system, such as a visual monitoring system, can monitor the position, size and shape of the glue dots in real time during the dispensing process. Once a deviation is found, the dispensing parameters or motion trajectory can be adjusted in time through the feedback system. For example, when the visual system detects that the glue dots deviate from the predetermined position, it can automatically trigger the control system to make compensation corrections to ensure that each glue dot can accurately fall on the target position under a complex three-dimensional path, thereby improving the overall stability of the dispensing.
Through the above comprehensive optimization of mechanical structure, motion control algorithm, dispensing system and monitoring feedback system, the dispensing stability of the 3D desktop dispensing machine under a complex three-dimensional path can be significantly improved to meet the needs of high-precision manufacturing.
