论文部分内容阅读
为了保证齿轮达到一定程度的传动精度,必须限制轮齿的残余变形量,即轮齿允许的残余交形量取决于传动精度和齿轮的使用条件。通过一系列试验,发现轮齿齿根的静弯曲极限应力值σ_(F11ms)与齿轮残余变形量δ和模数m两者之间的比值(δ/m)有这样的关系:σ_(F11ms)=σ_1(δ/m)~k。其中σ_1是每单位模数产生1μm残余变形量时的齿根应力,σ_1值取决于材料的机械性能。K为指数,其值取决于材料的种类和热处理工艺。本文给出球铁齿轮的σ_1和K值。
In order to ensure that the gear reaches a certain degree of transmission precision, the residual deformation of the gear teeth must be limited. That is, the residual gear shape allowed by the gear teeth depends on the transmission precision and gear conditions. Through a series of experiments, it is found that the relationship between the ultimate bending stress σ_ (F11ms) and the ratio (δ / m) of gear residual deformation δ and modulus m has the following relationship: σ_ (F11ms) = σ_1 (δ / m) ~k. Where σ_1 is the root stress at which a residual deformation of 1 μm per module is generated, the value of σ_1 depends on the mechanical properties of the material. K is an index, the value depends on the type of material and heat treatment process. In this paper, the σ_1 and K values of the iron gear are given.