Multiplying power control method of non-real-time interpolation numerical control system

Abstract

The invention discloses a multiplying power control method of a non-real-time interpolation numerical control system. The multiplying power control method comprises the following steps: calculating an initial speed and an end speed of a current track section according to the speed of the current track section and the speed of two track sections before and after the current track section; dividing the time corresponding to the current track segment into a first time and a second time which are equal; calculating an intermediate speed according to the first time, the second time, the initial speed and the end speed; obtaining a reduced speed curve according to the intermediate speed, the starting speed and the ending speed; and obtaining a speed curve of each interpolation period corresponding to the current multiplying power according to the reduction speed curve and the non-real-time interpolation period. According to the technical scheme, the numerical control system optimizes the multiplying power control speed curve in a non-real-time mode, the load rate is calculated, and speed continuity during replanning is guaranteed.

Description

technical field [0001] The invention relates to the technical field of machine tool control, in particular to an override control method of a non-real-time interpolation numerical control system. Background technique [0002] At present, most of the trajectory segments to be processed by the non-real-time interpolation of the CNC system are small data segments, such as Figure 1 to Figure 3 As shown, it is very common to execute the magnification transformation under non-uniform speed state. Although the magnification is transformed smoothly according to the S-shape during the execution of the algorithm, the previous stage of the magnification change process has not been completed, and the acceleration of the magnification change process has not dropped to 0, and the new magnification Start to execute a new S-type magnification transformation, and the acceleration starts from 0, so that the acceleration will appear discontinuous, and the speed curve will shake frequently, res...

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Problems solved by technology

[0002] At present, most of the trajectory segments to be processed by the non-real-time interpolation of the CNC system are small data segments, such as Figure 1 to Figure 3 As shown, it is very common to execute the magnification transformation under non-uniform speed state. Although the magnification is transformed smoothly according to the S-shape during the execution of the algorithm, the previous stage of the magnification change process has not been completed, and the acceleration of the magnification change process has not dropped to 0, and the new magnification Start to execute a new S-type magnification transformation, and the acceleration starts from 0, so that the acceleration appears discontinuous, and the speed curve frequently shakes, resulting in discontinuous acceleration, which leads to the shaking of the machine tool

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