CAJ | 학술논문

为提高展成电解加工整体叶轮叶片型面的加工精度和阴极运动设计的效率,以直纹面叶轮为例,研究了叶片扭角对展成电解加工的影响,提出对叶片型值点拟合曲线作法向偏置、以偏置曲线生成的特征点为依据进行展成运动轨迹设计、并根据工艺试验确定工具阴极运动参数的展成运动设计方法,从而消除叶片扭角对加工精度的不利影响.实例表明,采用该方法可以快速有效地进行整体叶轮叶片型面展成电解加工的阴极运动设计,并可提高加工精度.
위제고전성전해가공정체협륜협편형면적가공정도화음겁운동설계적효솔,이직문면협륜위례,연구료협편뉴각대전성전해가공적영향,제출대협편형치점의합곡선작법향편치、이편치곡선생성적특정점위의거진행전성운동궤적설계、병근거공예시험학정공구음겁운동삼수적전성운동설계방법,종이소제협편뉴각대가공정도적불리영향.실례표명,채용해방법가이쾌속유효지진행정체협륜협편형면전성전해가공적음겁운동설계,병가제고가공정도.
In order to improve the machining precision of vane surface of integral impeller and the efficiency of cathode movement planning during the electrochemical contour evolution machining, by taking a ruled-surface impeller for example, the effect of twist angle of vane surface on the machining is analyzed, and a movement planning method of contour evolution is proposed.In this method, normal offset curves are obtained from the fitting curve of vane data points, the feature points generated from the offset curves are used to design the movement trajectory of contour evolution, and the results of process experiments are employed to determine the cathode movement parameters.Thus, the negative effect of twist angle on the machining precision is effectively eliminated.It is shown that the proposed movement planning method makes rapid and efficient designs and improves the machining precision for the vane surface of integral impeller.