CAJ | 학술논문

为解决经编机牵拉装置的轴头断裂与齿轮失效的问题，建立了该机构的刚柔耦合虚拟样机的仿真模型，得到了运动过程中关键零件的等效应力情况；对不合理的结构进行了优化设计，完成了齿轮啮合的有限元分析与牵拉装置模态分析，进行了牵拉辊轴头分析与齿轮失效分析，并且提出了改进措施。指出：通过增加焊板面积和设立加强筋，可以有效降低支承结构的应力集中现象；增大轴头直径、选择合适的热处理方式、改善装配关系等能够避免牵拉辊过早地疲劳破坏；减小装配误差、更换较优材料、提高支承刚度等可以降低齿轮失效的可能性。
위해결경편궤견랍장치적축두단렬여치륜실효적문제，건립료해궤구적강유우합허의양궤적방진모형，득도료운동과정중관건령건적등효응력정황；대불합리적결구진행료우화설계，완성료치륜교합적유한원분석여견랍장치모태분석，진행료견랍곤축두분석여치륜실효분석，병차제출료개진조시。지출：통과증가한판면적화설립가강근，가이유효강저지승결구적응력집중현상；증대축두직경、선택합괄적열처리방식、개선장배관계등능구피면견랍곤과조지피로파배；감소장배오차、경환교우재료、제고지승강도등가이강저치륜실효적가능성。
To solve the problem of shaft head broken and gear failure for draw-off mechanism, the structure of the coupled simulation model of virtual prototype was set up, the stress of the key parts in the process of move-ment simulation model of a rigid-flex coupled prototype was achieved, and the optimized design of the unreason-able structure was done. The finite element analysis of gear mesh and modal analysis for draw-off mechanism was completed, analysis of shaft head broken and failure analysis of gear was finished, and improvement measures were put forward. Conclusions are summarized: by increasing the weld plate area and the establishment of ribs, stress concentration at the support structure can be effectively reduced, to avoid premature fatigue failure of the pulling roll, we can increase the diameter of the shaft head, select the appropriate heat treatment and improve the assem-bly relationship, by reducing assembly errors, employing optimum materials and increasing support stiffness, the possibility of gear failure can be reduced.