CAJ | 학술논문

针对塑性成形的直齿锥齿轮齿形精度不高、修形考虑不足的问题，提出了一种基于数值计算的近净成形齿形精度控制方法，并详细描述了其工艺流程。以轿车差速器行星锥齿轮为对象进行应用研究，进行了直齿锥齿轮的数字化建模、接触分析、塑性成形工艺有限元仿真和回弹计算。结果显示，在齿高方向上，回弹最小在鼓形处，往齿顶和齿根方向回弹量逐渐增大，接近齿顶处达到最大回弹0·14 mm。对模具型腔进行了二次修正的精度控制，使齿形偏离理论修形齿面的值降到-0.025 mm以下。研究结果表明，采用该方法能够获得具有较高齿形精度的直齿锥齿轮产品。
침대소성성형적직치추치륜치형정도불고、수형고필불족적문제，제출료일충기우수치계산적근정성형치형정도공제방법，병상세묘술료기공예류정。이교차차속기행성추치륜위대상진행응용연구，진행료직치추치륜적수자화건모、접촉분석、소성성형공예유한원방진화회탄계산。결과현시，재치고방향상，회탄최소재고형처，왕치정화치근방향회탄량축점증대，접근치정처체도최대회탄0·14 mm。대모구형강진행료이차수정적정도공제，사치형편리이론수형치면적치강도-0.025 mm이하。연구결과표명，채용해방법능구획득구유교고치형정도적직치추치륜산품。
For the problem that tooth profile accuracy was not required high and modification was not full of consideration in straight bevel gear plastic forming process,a straight bevel gear tooth pro-file accuracy control method was proposed with near net forming based on the numerical calculation, then a detailed description of the process was carried out.The car differential planetary gear was stud-ied by digital modeling,contact analysis,forming process finite element simulation and springback law calculation.The results display that the minimum rebound appears at drum and gradually increase to the tooth point or tooth root in the height of tooth direction.Maximum springback is up to maxi-mum 0.14 mm,and minimum 0.02 mm closed to the tooth top.Twice modification was carried out to control accuracy of tooth profile and the maximum deviation value is up to -0.025 mm while the min-imum was close to zero.The results show that this method can use the near net shape process to ob-tain higher profile accuracy straight bevel gear products.