Release date : 2021/8/17 16:33:28 Click volume: 292
CNC machining speed is becoming more and more efficient, but while increasing the machining speed, we must also do a good job of control to ensure the smooth progress of the workpiece processing. What should we start from?
1. Flexible acceleration and deceleration control
In CNC machining, the specific automatic speed control function is usually directly realized by the system program. In this way, it is necessary to change the system's acceleration and deceleration characteristics or add and subtract control to modify the CNC program, so ordinary users cannot make CNC machine tools have the best acceleration and deceleration performance according to their own wishes. Therefore, the flexible acceleration and deceleration control method we proposed adopts the principle of the database, and divides the acceleration and deceleration control into two parts: acceleration and deceleration description and implementation, and separates the acceleration and deceleration description from the system program. In the numerical control system software, a general control channel that has nothing to do with the content of the acceleration and deceleration database is designed, and the acceleration and deceleration calculation and trajectory control are independently completed by it.
2. Flexible automatic acceleration control
Set the acceleration curve, analytical curve and non-analytic curve, and store them in the acceleration and deceleration curve library in the form of a number table as a model.
3. Flexible automatic deceleration control
For acceleration control, it is stored in the acceleration and deceleration curve library in the form of a number table as a model. Reasonable automatic acceleration and deceleration control is an important link to ensure the dynamic performance of CNC machine tools. The traditional automatic acceleration and deceleration control based on a fixed curve lacks flexibility, so it is difficult to ensure that the acceleration and deceleration process matches the performance of the machine tool, and it is difficult to achieve the best dynamic characteristics of the machine tool movement.
As we all know, CNC machining center is a kind of CNC machining equipment with good performance in terms of workpiece processing accuracy, processing efficiency, processing capacity of complex workpieces, and degree of automatic processing. Therefore, in order to improve workpiece processing efficiency, it is necessary to control the speed. An important aspect.