大平面砂轮磨削面锥形误差对齿轮螺旋线偏差的影响

螺旋线总偏差是齿轮等级评定中的必检项目之一。出于研制基准级标准齿轮的需要，以Y7125磨齿机为例分析了大平面砂轮磨削面锥形误差对齿轮螺旋线偏差的影响，并推导出了影响系数的数学表达式。研究结果表明砂轮与齿面有效接触宽度对齿轮螺旋线形状偏差的影响不大，而随着被磨齿轮齿宽的加大，对齿轮螺旋线形状偏差的影响系数会显著增大；砂轮磨削面锥形误差使被磨齿轮螺旋线偏差曲线呈弧形，且弧度从齿根到齿顶逐渐增大。最后通过磨齿实验与偏差测量论证了这一结论。

Improvement of gear helix accuracy by controlling cone-shaped error of grinding face of flat faced wheel

In order to develop ultra precision master gears, this paper takes the Y7125 grinder as an example to analyze the effect of the cone-shaped error of grinding face on the helix deviations. It establishes a geometric model and derives the numeric expression of the effect. The theoretical results show that the minimum effective bearing width has a little effect on the form deviation of gear helix. However, as the increase of gear width, the effect of the cone-shaped error on the form deviation of gear helix wi...