组合机床与自动化加工技术
組閤機床與自動化加工技術
조합궤상여자동화가공기술
MODULAR MACHINE TOOL & AUTOMATIC MANUFACTURING TECHNIQUE
2014年
12期
10-13,18
,共5页
何一冉%丛明%毕京宇%赛宗胜
何一冉%叢明%畢京宇%賽宗勝
하일염%총명%필경우%새종성
ADC12铝硅合金%高速铣削%稳定域叶瓣图%表面质量%仿真分析
ADC12鋁硅閤金%高速鐉削%穩定域葉瓣圖%錶麵質量%倣真分析
ADC12려규합금%고속선삭%은정역협판도%표면질량%방진분석
ADC12 aluminum alloy%high speed milling%stability lobes diagram%surface quality%simula-tion analysis
建立了高速铣削系统动力学模型以及基于动态铣削厚度的多齿动态铣削力模型，并由此推导出轴向临界切深的理论公式；通过基于力锤激振的模态分析实验，测得机床-刀具系统的模态参数；进行ADC12铝硅合金高速铣削实验，测得铣削力以及表面粗糙度数值，求得其切削力系数；结合以上实验，利用MATLAB软件绘制出稳定性叶瓣图，并通过检测加工工件表面质量验证了其准确性；改变模态参数数值，研究分析了机床-刀具系统的固有频率、阻尼比以及刚度对铣削稳定性的影响。研究表明该方法对于提高加工效率以及改进机床性能具有一定的实际意义。
建立瞭高速鐉削繫統動力學模型以及基于動態鐉削厚度的多齒動態鐉削力模型，併由此推導齣軸嚮臨界切深的理論公式；通過基于力錘激振的模態分析實驗，測得機床-刀具繫統的模態參數；進行ADC12鋁硅閤金高速鐉削實驗，測得鐉削力以及錶麵粗糙度數值，求得其切削力繫數；結閤以上實驗，利用MATLAB軟件繪製齣穩定性葉瓣圖，併通過檢測加工工件錶麵質量驗證瞭其準確性；改變模態參數數值，研究分析瞭機床-刀具繫統的固有頻率、阻尼比以及剛度對鐉削穩定性的影響。研究錶明該方法對于提高加工效率以及改進機床性能具有一定的實際意義。
건립료고속선삭계통동역학모형이급기우동태선삭후도적다치동태선삭력모형，병유차추도출축향림계절심적이론공식；통과기우력추격진적모태분석실험，측득궤상-도구계통적모태삼수；진행ADC12려규합금고속선삭실험，측득선삭력이급표면조조도수치，구득기절삭력계수；결합이상실험，이용MATLAB연건회제출은정성협판도，병통과검측가공공건표면질량험증료기준학성；개변모태삼수수치，연구분석료궤상-도구계통적고유빈솔、조니비이급강도대선삭은정성적영향。연구표명해방법대우제고가공효솔이급개진궤상성능구유일정적실제의의。
High speed milling system dynamics model and dynamic milling force model based on dynamic milling thickness were established, and thus deduced the theoretical formula of axial critical cutting depth, The modal parameters of machine-tool system were obtained through the hammer excitation experiment ;Milling force and surface roughness were gained by high speed milling experiment on ADC12 aluminum al-loy, and thus calculated the coefficient of cutting force;Combining the above experiments, drew the stabili-ty lobes diagram by MATLAB , and its accuracy was verified by testing machining surface quality. Chan-ging modal parameter value, studied the influence of natural frequency, damping ratio and stiffness on the machine-tool system stability. Studies showed that this method has a certain practical significance for impro-ving machining efficiency and performance of machine tool.
