The Researches On The Mechanism Of The Machine Tool Guide Crawl And Simulation Optimization

Equipment manufacturing industry is the basis for the development of thenational economy, the level and quality of technical equipment which theequipment manufacturing industry to provide, is a direct impact on the level ofproduction in the various departments of the national economy and theeconomic benefits. In recent years, with the rapid development of the equipmentmanufacturing industry, the precision and ultra-precision machining technologybecomes an important development direction of modern processing industrygradually, precision and ultra-precision machine tools is the most basicconditions of precision and ultra-precision manufacturing, it affects the forwardto the development of cutting-edge technology in the defense, aerospace,aviation directly. Precision and ultra-precision machine rail performance meritsrelated to the accuracy and surface roughness of the machined parts. Smoothrunning, flexible action, not appear stick-slip, is the basic requirements forprecision and ultra-precision machine tool guide. Machine tool guide stick-slipphenomenon would affect the quality of the machined parts seriously. Masterthe stick-slip of the machine, suppress and eliminate stick-slip problem is solvedin the field of precision machining fundamentally. So the subject of the researchhas important theoretical and practical significance.The papers analysis of the mechanism of stick-slip of the machinecrawling in-depth, and to simplify crawling movement of the machine toolguide state kinetic equations, numerical optimization, and suppression stick-slipthrough a discussion of the nature of the binary oscillator in-depth research.Firstly, analysis of the main factors affecting stick-slip, analysis of thefriction characteristics, build dynamic friction model, analysis machinestick-slip mechanism, use motion simulation software simulation machine tablemovement. The main parameters of movement through the debug simulation todemonstrate the impact stick-slip reasons, and establish the machine stick-slipmathematical model analysis compared with the establishment of sportssimulation model is correct or not, and verify that the stick-slip of the machine table and vibration phenomena simultaneously generated.Secondly, build a kinetic equation of binary friction oscillator model andthe motion equation of state, and converted to relative speed, by relativevelocity state the amount of discussion to establish the standard the stick-slipstate transformation for the proposed use of vibration suppression stick-slipestablished theory foreshadowing.Then build the mathematical modeling of binary friction oscillator,analyze the stability of the Coulomb friction model, and compensation based onenergy the vibration damping inhibition crawling method based on positivepressure the energy compensation inhibition crawling. And motion simulationtests to verify that these two methods can achieve the effect of suppressingcrawling compensation based on energy the vibration damping inhibition moreeffective the crawling method than the energy compensation based on positivepressure suppression crawling.