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本文对渐开线齿廓“直线修整”的修缘量、修缘高度和修缘曲线三个基本内容进行探讨。采用有限元法分析计算了不同齿数、模数和变位系数的直齿轮轮齿在不同同载荷作用下各啮合点的法向弯曲变形量,列出了各种关系曲线,并把各个参数对法向弯曲变形量的影响作了讨论,在考虑到齿面接触变形量后,提出直齿轮轮齿齿顶修缘量的确定方法和近似计算式。通过分析比较后,本文提出采用长修缘的方式决定修缘高度的建议。为了能在一般齿轮加工机床上进行修缘加工,本文提出采用压力角略大于原齿廓曲线压力角的另一条渐开线作为齿顶修缘曲线,并且计算了在不同修缘量和修缘高度下修缘渐开线原始齿廓的压力角,从而提供了适用于直齿轮、斜齿轮“直线修整”的计算方法。
In this paper, three basic contents of repairing margin, repairing height and repairing curve of involute profile “straight line dressing” are discussed. The finite element method was used to analyze and calculate the normal bending deformations of spur gear teeth under different loads with different tooth numbers, moduli and displacements. The relationship curves were listed, The influence of the normal bending deformation is discussed. After considering the contact deformation, the determination method and approximate calculation formula of the repairing edge of spur gear tooth tip are proposed. After analyzing and comparing, this paper puts forward the suggestion of using long repair margin to decide the repair height. In order to carry out the edge machining on the general gear machining machine, this paper proposes another involute curve whose pressure angle is slightly larger than the pressure curve of the original tooth profile as the addendum curve, The height of the involute under the original involute profile of the pressure angle, thus providing for the spur gear, helical gear “straight line trim” calculation method.