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CNC machining to achieve high speed, high precision and high efficiency

CNC machining to achieve high speed, high precision and high efficiency


  The goal of CNC machining is to achieve high speed, high precision and high efficiency CNC machine tools. How to ensure the optimal acceleration / deceleration control law aiming at the shortest transition process time under the premise of smooth machine tool movement, so that the machine tool has the acceleration and deceleration characteristics that meet the requirements of high speed machining, which is the key problem of acceleration and deceleration research. Acceleration / deceleration control program is usually before the acceleration and deceleration control and after the acceleration and deceleration control 2: before the acceleration and deceleration control is generally before interpolation, interpolation pretreatment, acceleration and deceleration control of the object is the command feed speed; after acceleration and deceleration control After the interpolator, before the servo controller, control the feed axis of the feed speed and so on. After the acceleration and deceleration control without calculating the deceleration point, the algorithm is relatively simple, but if the servo gain of each movement axis is different, it is easy to cause the larger track contour error, which affects the motion precision.
  Therefore, the current application of the main acceleration and deceleration control technology. Acceleration and deceleration control method can be summarized as the traditional acceleration and deceleration method and the flexible acceleration and deceleration method: the traditional acceleration and deceleration method with trapezoidal acceleration and deceleration method and exponential acceleration and deceleration method and so on; flexible acceleration and deceleration method has a trigonometric function acceleration and deceleration method, S curve acceleration and deceleration method And polynomial acceleration and deceleration method. Conventional trapezoidal and exponential acceleration and deceleration due to the presence of acceleration changes affect the smoothness of motion, flexible acceleration and deceleration due to continuous acceleration, high-speed machining in the much attention.

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