System and method for recognizing rolling guide rail joint surface dynamic characteristic parameters

Abstract

The invention discloses a system for recognizing rolling guide rail joint surface dynamic characteristic parameters and a control method. The system has a double-guide rail connecting plate symmetric structure; a normal compression device and a tangential compression device are prevented from rigid contact, so that the recognition of normal and tangential dynamic parameters in different pre-compression states is realized; a base consists of an experimental bench and a replaceable adjusting block corresponding to a corresponding rolling guide rail set; the experimental bench is provided with an O-shaped groove or symmetric notch structure; the replaceable adjusting blocks with different specifications are connected with the experimental bench at the same mounting position; each group of replaceable adjusting blocks are symmetrically arranged on the experimental bench, and one side of each of the replaceable adjusting blocks is pressed against a notch machining side face on the experimental bench to ensure parallelism of the replaceable adjusting blocks and position the replaceable adjusting blocks; a multi-guide rail, multi-connecting plate and single degree-of-freedom system design is realized on one experimental bench in different pre-compression states, so that the normal and tangential joint surface parameters are recognized; and the influence on an experimental device is eliminated. The reliable control method and a data processing system ensure that the experimental system is more perfect.

Description

technical field [0001] The invention relates to a test identification system for obtaining basic characteristic parameters of a general joint surface, and relates to the identification of joint surface characteristic parameters of rolling guide rails of different specifications and models under different preload states. Background technique [0002] CNC machine tools are highly demanding precision, efficient, flexible, and automated processing equipment. The mechanical structure is very complex, and its design technology involves many disciplines. It is difficult for the stiffness model to accurately reflect the actual situation. The influence of characteristics is very obvious. The dynamic characteristics of the joint surfaces that make up machine tool parts are nonlinear, multi-factor related, and dependent on mechanical systems. It is difficult to accurately determine parameters such as stiffness and damping. According to statistics, more than 60% of the vibration problem...

AI Technical Summary

Problems solved by technology

Moreover, the joint surface of the rolling guide pair with point contact has poor rigidity compared with the sliding guide rail and other joint surfaces, which has become a weak link of the CNC machine tool. Therefore, the research on the joint surface of the rolling guide rail has become a key factor for the CNC machine tool.

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