CNC machining itself is to realize automation, liberate manpower, improve work efficiency, as well as improve the quality and accuracy of the workpiece, etc. So how to ensure the efficiency of CNC machining? I will answer the following questions for you.
In the premise of ensuring the smooth operation of the machine tool, can make the acceleration and deceleration process time is the shortest method is the best solution to improve the speed of CNC machining, but also the study of acceleration and deceleration is the most critical issue.
Generally speaking, there are two different acceleration and deceleration control schemes: before interpolation and after interpolation pre-processing acceleration and deceleration control we generally call the front acceleration and deceleration control, after the interpolator and before the servo controller to control the feed rate of the motion axis is generally known as after acceleration and deceleration. The algorithm of post-acceleration and deceleration control is relatively simple compared with that of pre-acceleration and deceleration, and it does not need to calculate the deceleration point, but the servo gain of different axes is not the same, which is easy to cause the impact of accuracy.
Thus, the current domestic CNC machining is generally used in the front acceleration and deceleration control technology, acceleration and deceleration control methods can be summarized as flexible acceleration and deceleration method and traditional acceleration and deceleration method, the traditional acceleration and deceleration method has trapezoidal acceleration and deceleration method and exponential acceleration and deceleration method and other methods; flexible acceleration and deceleration method has trigonometric function acceleration and deceleration method, S-curve acceleration and deceleration method and polynomial acceleration and deceleration method. The traditional trapezoidal and exponential acceleration and deceleration methods affect the smoothness of motion due to the sudden change of acceleration, while the flexible acceleration and deceleration methods are of great interest in the high-speed hardware processing due to the continuous acceleration.
