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介绍了采用碟形砂轮磨削面齿轮的原理及过程,研究了齿廓包络和齿宽包络两种包络方式产生包络残差的机理.分别建立了两种加工方式下包络残差的计算模型和方法,并研究了所产生包络残差的特点.通过数值算例分析了包络过程中刀具周向进给角度、齿宽方向进给量以及碟形砂轮外径对齿面包络残差的影响规律.计算结果表明:齿宽包络比齿廓包络具有更高的效率.进行了以齿廓包络方式的面齿轮磨齿加工实验,当刀具周向进给角度分别取为2°,1°,0.5°及0.2°时,齿面表面粗糙度逐渐明显提高,齿面磨削加工印痕的数目和方向与包络仿真计算结果一致.初步证明根据包络残差计算结果选取合适的进给量参数,可以保证面齿轮磨齿加工的表面粗糙度水平并能提高加工效率.
This paper introduces the principle and process of surface grinding with disc grinding wheel, and studies the mechanism of the envelope residuals generated by two envelope modes: tooth profile envelope and tooth width envelope, and establishes the envelope residual Difference calculation model and method, and study the characteristics of the generated envelope residuals.A numerical example is given to analyze the effects of the cutting tool circumferential feed angle, the tooth width direction feed and the outer diameter of the disc grinding wheel on the tooth bread The results show that the tooth width envelope has higher efficiency than the tooth profile envelope.Experimental results show that when the tool circumferential feed angle is 2 °, 1 °, 0.5 ° and 0.2 °, the surface roughness of the tooth surface gradually increased, and the number and direction of the indentations on the tooth surface grinding process were consistent with those of the envelope simulation.A preliminary proof was made based on the results of the envelope residual calculation Appropriate feed parameters, surface gear can ensure the degree of surface roughness and improve processing efficiency.