Experimental device for comprehensively testing dynamic characteristics of linear feeding system

Abstract

The invention discloses an experimental device for comprehensively testing dynamic characteristics of a linear feeding system and belongs to the technical field of machinery manufacturing. The device comprises a single-degree-of-freedom servo feeding mechanism, a longitudinal loading mechanism, a gantry frame, a transverse loading mechanism, a vertical loading mechanism, a friction loading mechanism and an inertia matching mechanism, wherein the single-degree-of-freedom servo feeding mechanism controls the position of a worktable; the longitudinal loading mechanism controls amplitude and direction of longitudinal loading force; the transverse loading mechanism controls amplitude of transverse loading force; the vertical loading mechanism controls amplitude of vertical loading force; the friction loading mechanism controls application of a friction load; and inertia matching mechanism can research inertia matching characteristics. The device is reasonable and compact in structure, convenient to maintain and wide in application range, can simulate a longitudinal load, a transverse load, a vertical load, torque and a composite load at any position of the worktable and accurately controls the loading force.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, in particular to an experimental device for comprehensive testing of dynamic characteristics of a linear feed system. Background technique [0002] Machine tools are the main machine tools in modern manufacturing technology, which to a certain extent determine the level of a country's manufacturing industry. As the high-tech field continues to develop in the direction of high speed, high efficiency, precision, lightweight and automation, the performance requirements for machine tools are getting higher and higher. In order to meet the needs of high-tech development, modern machine tools are moving towards high speed, high power and high precision. , high reliability direction. [0003] As one of the important components of the machine tool, the feed system's dynamic performance directly affects the machining accuracy and response speed of the machine tool. As the most common fe...

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Problems solved by technology

[0004] External load, friction, and inertia matching are all key factors affecting the dynamic characteristics of the feed system. Compared with friction and inertia matching characteristics, it is difficult to study the influence of external loads on the dynamic characteristics of the feed system. This is mainly due to the During the working process of the system, there are many forms of external loads, such as longitudinal loads, lateral loads, vertical loads, torques and their composite forms. At the same time, the worktable is constantly moving, which makes the application of loads more difficult.

At present, there is no experimental platform that can comprehensively study how these factors affect the dynamic characteristics of the feed system. The key difficulty lies in how to accurately simulate the external load and realize the research of the above-mentioned influencing factors on the same experimental platform at the same time.

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