【摘要】 为解决目前粉末冶金齿轮模具制造精度不高的问题,采用盘形砂轮CNC内齿成形磨齿技术以提高模具精度。提出了截线式数值模拟包络计算模型,将已知齿形按相对位置关系转换到计算平面后用数值模拟包络法进行砂轮廓形计算。编制了砂轮廓形计算处理及误差分析软件,并利用该软件进行了计算验证和误差分析。对齿数z=44,法面模数mn=1.5 mm,压力角α=20°,分度圆螺旋角β=30°的螺旋齿轮模具计算实例表明,计算误差可控制在0.000 1 mm以内,达到高精度齿轮模具制造的要求。更多还原

【Abstract】 In order to increase the precision of the mold for powder metallurgy gears, use the CNC form grinding technique with a plate-shaped grinding wheel to produce the mold. A line-cutting model for calculation is put forward for the profile calculating. After transferring the known profile to the plane for calculation, use a numerical simulation method to calculate the profile of the grinding wheel. A profile calculating, profile editing and error analyzing software is also programmed. The calculating and error analyzing example of a mold that z is 44, mn is 1.5 mm, α is 20° and β is 30° using this software shows that the calculating error can be under 0.000 1 mm and the method is precise enough to meet the requirements of high quality gear molds.更多还原