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With the increasing demand for high speed and high precision machining ofmachine tools, the problem of which factors of feed system ultimately determinethe performance of machine tools is becoming more and more prominent. Atpresent, the feed system is designed mainly by limiting the load inertia ratio.This design method ignores the match between electromechanical system, motionprocess and control, and cannot guarantee the optimal performance of the feedsystem. And it is also difficult to intuitively explain the relationshipbetween the inertia ratio and the dynamic performance of the system. Based onthe analysis of the relationship between the structural parameters and thedynamic performance of the feed system, the viewpoint that the acceleration anddeceleration capacity ultimately determine the performance of the feed systemis put forward in this paper, and the theoretical root of the traditionaldesign based on the inertia ratio is given. The simulation and experiment showthat if the acceleration and deceleration capacity is too small, there will notbe enough acceleration ability to follow the movement instruction of thesystem, resulting in the system performance decline. However, if theacceleration and deceleration capacity is too large, the system stability willbe reduced, which can explain the traditional design principle of the machinetool that the inertia ratio should not be too large or too small. This studyprovides a clear theoretical basis for machine tool design.

Influence of Acceleration and Deceleration Capability on Machine Tool Feed System Performance