Elastic deformation optimization gear shaving cutter design method

Abstract

The invention relates to an elastic deformation optimization gear shaving cutter design method. The gear shaving concave phenomenon generated in existing gear shaving machining is restrained or relieved. The method comprises the following steps: 1) setting an initial meshing angle parameter a_nh0, and calculating an initial parameter of the gear shaving cutter through the a_nh0; 2) calculating theelastic deformation [delta]<0t> corresponding to each stress point at any moment of the gear part of the gear shaving cutter through the initial parameters of the gear shaving cutter in the step 1),and calculating the elastic deformation [delta]<1t> of each stress point at the corresponding moment on a gear meshed with the gear part; calculating the comprehensive elastic deformation [delta]<t> corresponding to each stress point; 3) drawing an elastic deformation dynamic distribution diagram between the comprehensive elastic deformation [delta]<t> and the pressure angle of the corresponding stress point, and calculating a comprehensive elastic deformation range R<delta>; and (4) adjusting the meshing angle parameter a_nh0, repeating the step (2) to the step (3), taking the a_nh0 when theR<delta> is smaller than or closest to 10 microns as a final design meshing angle parameter, and completing the design of other parameters of the gear shaving cutter according to the final design a_nh0 value.

Description

technical field [0001] The invention relates to a gear shaving cutter, in particular to a method for designing a gear shaving cutter optimized for elastic deformation. Background technique [0002] In the past, in the design of shaving parameters, the most important thing is to determine the engagement angle a_nh0 of the shaving cutter. Usually, a suitable engagement angle a_nh0 can reduce or suppress the formation of the shaving concave. However, the gear shaving cutters designed by these two methods still sometimes enter a better meshing state in the second half of the life cycle. The reason for this phenomenon is that the small meshing angle or the balanced shaving The meshing of the teeth reduces the stiffness of the shaving cutter. During the processing of the shaving cutter, more bending deformation occurs, resulting in the middle area of ​​the tooth surface with a higher comprehensive stiffness, which has the smallest cutter and the largest processing volume, resultin...

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Problems solved by technology

[0002] In the past, in the design of shaving parameters, the most important thing is to determine the engagement angle a_nh0 of the shaving cutter. Usually, a suitable engagement angle a_nh0 can reduce or inhibit the formation of the shaving concave. However, the gear shaving cutters designed by these two methods still sometimes enter a better meshing state in the second half of the life cycle. The reason for this phenomenon is that the small meshing angle or the balanced shaving The meshing of the teeth reduces the stiffness of the shaving cutter. During the processing of the shaving cutter, more bending deformation occurs, resulting in the middle area of ​​the tooth surface with a higher comprehensive rigidity, which has the smallest cutter and the largest processing volume, resulting in the shaving concave.

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