CAJ | 학술논문

微细铣削加工是使用微型立铣刀在高主轴转速下制造微型元件的加工方式，分析切削力和加工稳定性对表征微细铣削加工过程起着重要的作用。提出一种数值分析的方法来研究螺旋齿球头立铣刀在可变径向切削深度下的微细铣削加工过程。首先建立了球头铣刀微细铣削的模型，并推导了切削力的计算公式；采用时域仿真的方法详细计算了螺旋齿球头立铣刀和平头立铣刀铣削加工的切削力，并对比了二者切削力仿真的结果；通过时域和频域研究相结合的方式详细分析了小径向切深下球头铣刀微细铣削的稳定性。最后，分析得到了Hopf-flip分岔，并深入对比和分析了不同加工条件下铣削加工的稳定性状况。
미세선삭가공시사용미형립선도재고주축전속하제조미형원건적가공방식，분석절삭력화가공은정성대표정미세선삭가공과정기착중요적작용。제출일충수치분석적방법래연구라선치구두립선도재가변경향절삭심도하적미세선삭가공과정。수선건립료구두선도미세선삭적모형，병추도료절삭력적계산공식；채용시역방진적방법상세계산료라선치구두립선도화평두립선도선삭가공적절삭력，병대비료이자절삭력방진적결과；통과시역화빈역연구상결합적방식상세분석료소경향절심하구두선도미세선삭적은정성。최후，분석득도료Hopf-flip분차，병심입대비화분석료불동가공조건하선삭가공적은정성상황。
Micro mil ing can fabricate miniaturized components using micro end mil at high rota-tional speeds.The analysis of cutting force and stability in micro mil ing plays an important role in characterizing the cutting process.A numerical analysis method is presented to investigate the helical bal micro mil ing process with variable radial immersion.The schematic model of bal mi-cro mil ing is constructed and the cutting force calculation formula is derived.And then,a detailed time domain simulation for micro mil ing forces between helical bal and square end mil s is carried out,and the results are compared.In addition,the stability lobe of bal micro mil ing with low ra-dial immersion is researched in detail through time domain and frequency domain methods.Final-ly,the Hopf and flip bifurcations are explored and the simulation results between variable stability cases are deeply compared and analyzed.