In order to generate the digital gear tooth surfaces(DGTS)with high efficiency and high precision,a method for identification and compensation of machining errors is demonstrated in this paper.Machining errors are ana...In order to generate the digital gear tooth surfaces(DGTS)with high efficiency and high precision,a method for identification and compensation of machining errors is demonstrated in this paper.Machining errors are analyzed directly from the real tooth surfaces.The topography data of the part are off-line measured in the post-process.A comparison is made between two models:CAD model of DGTS and virtual model of the physical measured surface.And a matching rule is given to determine these two surfaces in an appropriate fashion.The developed error estimation model creates a point-to-point map of the real surface to the theoretical surface in the normal direction.A“pre-calibration error compensation”strategy is presented.Through processing the results of the first trail cutting,the total compensation error is predicted and an imaginary digital tooth surface is reconstructed. The machining errors in the final manufactured surfaces are minimized by generating this imaginary surface.An example of ma- chining 2-D DGTS verifies the developed method.The research is of important theoretical and practical value to manufacture the DGTS and other digital conjugate surfaces.展开更多
根据螺旋锥齿轮的切齿加工方法和齿轮啮合原理,运用矢量运算的方法建立了大轮成形法加工和小轮刀倾法加工的理论齿面方程并规划了齿面计算网格点区域。运用Visual Studio 2008编程环境,编写了理论齿面各离散点空间坐标及法矢的计算软件...根据螺旋锥齿轮的切齿加工方法和齿轮啮合原理,运用矢量运算的方法建立了大轮成形法加工和小轮刀倾法加工的理论齿面方程并规划了齿面计算网格点区域。运用Visual Studio 2008编程环境,编写了理论齿面各离散点空间坐标及法矢的计算软件,通过该软件可计算得到螺旋锥齿轮理论齿面各离散点在齿轮坐标系中的坐标值和单位法矢。将得到的理论齿面坐标点及法矢导入到三坐标测量机中进行测量获得各离散点的齿形误差,然后将获得该理论齿面坐标点及法矢的参数输入到CNC3906齿轮测量中心进行齿形误差测量,获得齿面上各离散点的齿形误差。将两组齿形误差测量数据进行对比分析,论证了所开发的计算软件的正确性,为螺旋锥齿轮齿面偏差的测量以及螺旋锥齿轮数字化闭环制造提供了正确的理论齿面数据。展开更多
文摘In order to generate the digital gear tooth surfaces(DGTS)with high efficiency and high precision,a method for identification and compensation of machining errors is demonstrated in this paper.Machining errors are analyzed directly from the real tooth surfaces.The topography data of the part are off-line measured in the post-process.A comparison is made between two models:CAD model of DGTS and virtual model of the physical measured surface.And a matching rule is given to determine these two surfaces in an appropriate fashion.The developed error estimation model creates a point-to-point map of the real surface to the theoretical surface in the normal direction.A“pre-calibration error compensation”strategy is presented.Through processing the results of the first trail cutting,the total compensation error is predicted and an imaginary digital tooth surface is reconstructed. The machining errors in the final manufactured surfaces are minimized by generating this imaginary surface.An example of ma- chining 2-D DGTS verifies the developed method.The research is of important theoretical and practical value to manufacture the DGTS and other digital conjugate surfaces.
文摘根据螺旋锥齿轮的切齿加工方法和齿轮啮合原理,运用矢量运算的方法建立了大轮成形法加工和小轮刀倾法加工的理论齿面方程并规划了齿面计算网格点区域。运用Visual Studio 2008编程环境,编写了理论齿面各离散点空间坐标及法矢的计算软件,通过该软件可计算得到螺旋锥齿轮理论齿面各离散点在齿轮坐标系中的坐标值和单位法矢。将得到的理论齿面坐标点及法矢导入到三坐标测量机中进行测量获得各离散点的齿形误差,然后将获得该理论齿面坐标点及法矢的参数输入到CNC3906齿轮测量中心进行齿形误差测量,获得齿面上各离散点的齿形误差。将两组齿形误差测量数据进行对比分析,论证了所开发的计算软件的正确性,为螺旋锥齿轮齿面偏差的测量以及螺旋锥齿轮数字化闭环制造提供了正确的理论齿面数据。