Real-time trimming method of feeding speed

Abstract

The invention discloses a real-time trimming method of a feeding speed, and the method comprises a numerical control system, a switch device and a speed measuring device, wherein the numerical control system is respectively connected with the switch device and the speed measuring device, the method comprises the steps of: setting a new trimming value of the feeding speed of the current point, detecting the acceleration / deceleration / constant speed state of the feeding speed of the current point through the speed measuring device, comparing the new trimming value with the last trimming value, and planning the speed values of the parts behind the current point according to the detecting and comparing results in a preset method; and the method disclosed by the invention has the beneficial effects of providing a real-time trimming method of a feeding speed suitable for high speed processing to solve the problem of discontinuous feeding speed and feeding acceleration of a machine tool during the trimming process so as to trim the feeding speed in real time with a continuous acceleration during the actual processing duration.

Description

technical field [0001] The invention relates to the technical field of feed speed adjustment, in particular to a method for real-time adjustment of feed speed. Background technique [0002] As one of the indispensable functions of CNC machine tools, the feed speed adjustment function directly affects the surface roughness and precision of the processed parts, and is closely related to the life and production efficiency of the tool and machine tool. Therefore, the adjustment process is Become one of the key technologies in the process of acceleration and deceleration control. The modification process mainly involves the real-time replanning of the speed curve, which requires that the speed and acceleration after the trajectory are continuous functions of time, that is, for the processing of the feed speed modification, it is not only required to be able to quickly respond to the modification in real time, but also to ensure the speed Acceleration is continuous. [0003] In ...

AI Technical Summary

Problems solved by technology

[0003] In the existing numerical control system data, it is seldom mentioned that the adjustment process is mentioned. It is often seen that the adjustment of the override switch during processing causes the abnormal vibration of the machine tool. Machining accuracy of parts and service life of machine tools and tools

Although some guarantee continuous speed and acceleration, they do not meet the real-time performance of trimming response, and cannot meet the requirements for real-time trimming applications.

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