How To Control The Speed Of CNC Machining | CNCLATHING

According to the open control idea, we propose a method that can automatically accelerate and decelerate the motion of NC machine tool according to any curve. This method pushes the automatic acceleration and deceleration control from the traditional fixed mode to the new flexible mode, and explores a new way to effectively improve the dynamic performance of NC machine tools.

1. Flexible acceleration and deceleration control

In CNC machining, the specific automatic speed control function is generally realized directly by the system program. In this way, the acceleration and deceleration characteristics of the system should be changed or controlled to modify the NC program, so ordinary users cannot make the CNC machine tool have the best acceleration and deceleration performance according to their own wishes. Therefore, the flexible acceleration and deceleration control method proposed by US adopts the principle of database, divides the acceleration and deceleration control into 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 independent of the content of acceleration and deceleration database is designed to complete acceleration and deceleration calculation and trajectory control independently.

2. Flexible automatic acceleration control

Set the acceleration curve, analytical curve and non analytical curve, and store them as a template in the acceleration and deceleration curve Library in the form of a number table.

3. Flexible automatic deceleration control

Like the acceleration control, it is stored in the acceleration and deceleration curve library as a template in the form of a number table. Reasonable automatic acceleration and deceleration control is an important link to ensure the dynamic performance of CNC machine tools. Due to the lack of flexibility, the traditional automatic acceleration and deceleration control based on fixed curve is not easy to match the acceleration and deceleration process with the performance of machine tool.