cnc machining factory CNC machining is developing in the direction of high efficiency and efficiency. This includes CNC machining speed control. In order to achieve maximum efficiency in the working stroke, the moving parts must accelerate to a high speed stroke in a short period of time and stop immediately in the middle of the high speed stroke. Therefore, it is necessary to control the machining speed of CNC machining center.
Based on the open control idea, an automatic acceleration and deceleration control method for CNC machine tools based on arbitrary curves is proposed. The automatic acceleration and deceleration control technology is developed from the traditional fixed mode to a new flexible mode, which explores a new way to effectively improve the dynamic performance of CNC machine tools.
1. Flexible acceleration and deceleration control device.
CNC machining, generally by the system program directly to achieve a specific speed automatic control function. In this way, the acceleration and deceleration characteristics of the system can be changed, and the CNC program can also be modified by acceleration and deceleration control, so that ordinary users cannot make the CNC machine tool have the best acceleration and deceleration performance according to their own wishes. For this reason, we propose a flexible acceleration and deceleration control method based on the database principle, which divides acceleration and deceleration control into acceleration and deceleration description and execution, and separates them from the system program. The software is designed with a universal control channel independent of the acceleration and deceleration database, and is able to perform acceleration and deceleration calculation and trajectory control independently.
2. Automatic acceleration control system for flexible CNC machining.
Acceleration curves, analysis curves and non-analysis curves are created and stored as a table of values as templates in the acceleration and deceleration curve library.
3. Automatic deceleration control system for flexible CNC machining.
Acceleration control is stored as a numerical table in a library of acceleration and deceleration curves. Proper automatic acceleration and deceleration control is essential to ensure the dynamic performance of the CNC machine. Traditional automatic acceleration and deceleration control based on fixed curves is difficult to ensure that the acceleration and deceleration process is coordinated with the machine performance and to optimize the dynamic characteristics of the machine motion due to the lack of flexibility.
